Radar, and detection method and device

Abstract

Provided in the present application are a radar, and a detection method and device. The radar can be applied to intelligent driving. The radar comprises a cavity antenna, a circuit board and a chip, wherein the cavity antenna, the circuit board and the chip are assembled in a first direction, a first surface of the circuit board and a second surface of the cavity antenna are correspondingly assembled, and a second surface of the circuit board and the chip are correspondingly assembled. The circuit board comprises a cavity port and a detection point arranged on the first surface of the circuit board, the cavity antenna comprises a feed port and a boss arranged on the second surface of the cavity antenna, and the detection point and the boss have electrical conductivity. By means of the electrical connection state between the detection point and the boss, the position relationship between the cavity port and the feed port is determined. In this way, the position relationship between the cavity port of the circuit board and the feed port can be effectively detected, and in turn the interconnection state between the antenna and a transceiver is effectively detected.

Description

Radar, detection method and device Technical Field

[0001] The present application relates to the field of sensors, and more particularly, to a radar, a detection method, and a device. Background Art

[0002] Sensors are crucial components in the perception process of assisted and autonomous driving systems. As a key sensor among these, the proper functioning of automotive millimeter-wave radars significantly impacts these systems. Currently, real-time monitoring of the millimeter-wave radar's operating status is required, with the results reported to the assisted and autonomous driving systems in real time. This prevents abnormalities in these systems caused by millimeter-wave radar failures.

[0003] Among them, whether the interconnection status between the millimeter-wave radar antenna and the millimeter-wave radar transceiver is good will directly affect whether the millimeter-wave radar can normally complete the target detection task.

[0004] For a structure that interconnects an air cavity antenna and a radar transceiver chip through a printed circuit board air cavity, how to effectively detect the interconnection status between the antenna and the transceiver is an urgent problem to be solved.

[0005] Summary of the Invention

[0006] The present application provides a radar, a detection method, and a device. For a structure in which an air cavity antenna and a radar transceiver chip are interconnected through a printed circuit board air cavity, the method can effectively detect the positional relationship between the air cavity port and the feed port of the printed circuit board, thereby effectively detecting the interconnection status between the antenna and the transceiver.

[0007] In a first aspect, a radar is provided. The radar includes a cavity antenna, a circuit board, and a chip. The cavity antenna, circuit board, and chip are assembled in a first orientation, with the first side of the circuit board aligned with the second side of the cavity antenna, and the second side of the circuit board aligned with the chip. The circuit board includes a cavity port and a detection point disposed on the first side of the circuit board. The cavity antenna includes a feed port and a conductive boss disposed on the second side of the cavity antenna. The detection point and the boss are conductive. The electrical connection between the detection point and the boss is used to determine the positional relationship between the cavity port and the feed port.

[0008] In the above technical solution, the positional relationship between the cavity port and the feed port is determined by the electrical connection state between the detection point set on the circuit board and the boss set on the cavity antenna, thereby determining the interconnection state between the cavity port and the feed port. In this way, by setting the electrical connection state between the detection point and the boss and mapping it to the positional relationship between the ports, the interconnection state between the ports can be simply and effectively determined. The detection point set on the circuit board and the boss set on the cavity antenna have a simple structure and low complexity. Compared with the method of detecting the interconnection state between the antenna and the transceiver by adding a coupler, an auxiliary receiving channel and an auxiliary transmitting channel, the solution provided by the present application is simpler, more effective and low-cost.

[0009] In conjunction with the first aspect, in certain implementations of the first aspect, the electrical connection state between the detection point and the boss is specifically used to determine the overlap between the detection point and the boss. The overlap between the detection point and the boss is used to determine the positional relationship between the cavity port and the feed port.

[0010] In combination with the first aspect, in certain implementations of the first aspect, when the detection point and the boss are electrically connected, there is an overlap between the detection point and the boss; or, when the detection point and the boss are not electrically connected, there is no overlap between the detection point and the boss.

[0011] In combination with the first aspect, in certain implementations of the first aspect, when there is overlap between the detection point and the boss, the corresponding detection circuit between the detection point and the boss is turned on; or, when there is no overlap between the detection point and the boss, the corresponding detection circuit between the detection point and the boss is turned off.

[0012] In conjunction with the first aspect, in certain implementations of the first aspect, when there are multiple cavity ports, the detection point is located in the middle of the multiple cavity ports, and / or the detection point is located around the multiple cavity ports. When there are multiple feeding ports, the boss is located in the middle of the multiple feeding ports, and / or the boss is located around the multiple feeding ports.

[0013] In combination with the first aspect, in certain implementations of the first aspect, the electrical connection status between the detection point and the boss is specifically used to determine the overlap between the detection point and the boss, and to obtain the distance between multiple corresponding cavity ports and feeding ports in the first direction.

[0014] In this way, a simple structure can effectively detect the distance between the cavity port and the feeding port in the first direction, which is low-cost and effective.

[0015] In conjunction with the first aspect, in certain implementations of the first aspect, the detection point is located at a central position between the multiple cavity ports, and when the detection point and the corresponding boss are electrically connected, there is an overlap between the detection point and the boss, and the distance between the multiple corresponding cavity ports and the feeding port in the first direction is less than or equal to the height of the boss. Alternatively, when the detection point and the corresponding boss are not electrically connected, there is no overlap between the detection point and the boss, and the distance between the multiple corresponding cavity ports and the feeding port in the first direction is greater than the height of the boss.

[0016] In this way, the distance ranges between a plurality of corresponding cavity ports and feeding ports in the first direction can be determined through one boss and a detection point, and the detection is simple and low-cost.

[0017] In combination with the first aspect, in certain implementations of the first aspect, when there are multiple bosses, the first boss located in the middle of the multiple feeding ports has the highest height.

[0018] In combination with the first aspect, in certain implementations of the first aspect, the first detection point is located in the middle of the multiple cavity ports, the second detection point is located around the multiple cavity ports, and when the first detection point is electrically connected to the first boss and the second detection point is not electrically connected to the corresponding second boss, there is overlap between the first detection point and the first boss, and there is no overlap between the second detection point and the second boss, and the distance between the multiple corresponding cavity ports and the feeding port in the first direction is within a preset range, and the preset range is related to the height of the first boss. Alternatively, when the first detection point is electrically connected to the first boss and the second detection point is electrically connected to the corresponding second boss, there is overlap between the first detection point and the first boss, and there is overlap between the second detection point and the second boss, and the distance between the multiple corresponding cavity ports and the feeding port in the first direction is obtained based on the height of the first boss and the height of the second boss.

[0019] It should be understood that the preset range is greater than the height of the first boss minus the first value, and the preset range is less than the height of the first boss plus the second value. The first value and the second value may be equal or unequal, and the first value and the second value are not zero.

[0020] In this way, the distance ranges between the multiple corresponding cavity ports and the feeding ports in the first direction can be obtained through the multiple bosses and the corresponding detection points, and the detection is simple and low-cost.

[0021] In combination with the first aspect, in certain implementations of the first aspect, the electrical connection status between the detection point and the boss is specifically used to determine the overlap between the detection point and the boss, and to obtain the deviation distances of multiple corresponding cavity ports and feeding ports projected on the target plane, where the target plane is perpendicular to the first direction.

[0022] In this way, the electrical connection status between the detection point and the boss can be measured by the deviation distance of multiple corresponding cavity ports and feeding ports projected on the target plane. The detection dimension is increased, the detection method is simple and low-cost, and the interconnection status between the cavity port and the feeding port can be further judged.

[0023] In combination with the first aspect, in certain implementations of the first aspect, the detection point includes a first printed pattern and a second printed pattern, the second printed pattern surrounds the first printed pattern, and the distance between the second printed pattern and the first printed pattern is a first distance. When the first printed pattern is electrically connected to the boss and the second printed pattern is not electrically connected to the boss, there is an overlap between the first printed pattern and the boss and there is no overlap between the second printed pattern and the boss, and the deviation distance between the projections of the multiple corresponding cavity ports and the feed ports on the target plane is less than the first distance. Alternatively, when the first printed pattern is electrically connected to the boss and the second printed pattern is electrically connected to the boss, there is an overlap between the first printed pattern and the boss and there is no overlap between the second printed pattern and the boss, and the deviation distance between the projections of the multiple corresponding cavity ports and the feed ports on the target plane is greater than or equal to the first distance.

[0024] In combination with the first aspect, in certain implementations of the first aspect, the second printed pattern is a ring, the circle and the ring are concentrically arranged, and the difference between the inner diameter of the ring and the diameter of the circle is twice the first distance.

[0025] In combination with the first aspect, in certain implementations of the first aspect, the electrical connection status between the detection point and the boss is specifically used to determine the overlap between the detection point and the boss, and to obtain the deviation direction of multiple corresponding cavity ports and feeding ports projected on the target plane.

[0026] In this way, the electrical connection status between the detection point and the boss can be projected on the target plane in the deviation direction of multiple corresponding cavity ports and feeding ports. The detection dimension is increased, the detection method is simple and low-cost, and the interconnection status between the cavity port and the feeding port can be further judged.

[0027] In combination with the first aspect, in certain implementations of the first aspect, the detection point includes a first printed graphic and a second printed graphic, the second printed graphic surrounds the first printed graphic, and the second printed graphic includes multiple graphic segments; when the first printed graphic is electrically connected to the boss, the first part of the multiple graphic segments is electrically connected to the boss, and the second part of the multiple graphic segments is not electrically connected to the boss, the first printed graphic and the boss are overlapped, the first part of the multiple graphic segments and the boss are overlapped, and the second part of the multiple graphic segments and the boss are not overlapped, and the deviation directions of the multiple corresponding cavity ports and feeding ports projected on the target plane are located in directions corresponding to some of the multiple graphic segments.

[0028] In combination with the first aspect, in certain implementations of the first aspect, the first printed graphic is a circle, the multiple graphic segments are multiple arc segments, the multiple arc segments have the same corresponding radius, and are all concentrically arranged around the circle.

[0029] In a second aspect, a detection method is provided. The detection method is applied to a radar. The radar includes a cavity antenna, a circuit board, and a chip. The cavity antenna, circuit board, and chip are assembled in a first orientation, with the first side of the circuit board corresponding to the second side of the cavity antenna, and the second side of the circuit board corresponding to the chip. The circuit board includes a cavity port and a detection point disposed on the first side of the circuit board. The cavity antenna includes a feed port and a conductive boss disposed on the second side of the cavity antenna. The method includes obtaining an electrical connection status between the detection point and the boss. Based on the electrical connection status between the detection point and the boss, the positional relationship between the cavity port and the feed port is determined.

[0030] It should be understood that the beneficial effects brought about by the solution of the second aspect are similar to those of the first aspect and will not be elaborated here.

[0031] In conjunction with the second aspect, in certain implementations of the second aspect, determining the positional relationship between the cavity port and the feeding port based on the electrical connection state between the detection point and the boss includes: determining an overlap between the detection point and the boss based on the electrical connection state between the detection point and the boss; and determining the positional relationship between the cavity port and the feeding port based on the overlap between the detection point and the boss.

[0032] In conjunction with the second aspect, in certain implementations of the second aspect, determining the overlap between the detection point and the boss based on the electrical connection between the detection point and the boss includes: determining that there is overlap between the detection point and the boss when an electrical connection is detected between the detection point and the boss; or determining that there is no overlap between the detection point and the boss when no electrical connection is detected between the detection point and the boss.

[0033] In conjunction with the second aspect, in certain implementations of the second aspect, when there is an overlap between the detection point and the boss, the corresponding detection circuit between the detection point and the boss is connected. Alternatively, when there is no overlap between the detection point and the boss, the corresponding detection circuit between the detection point and the boss is disconnected.

[0034] In conjunction with the second aspect, in certain implementations of the second aspect, when there are multiple cavity ports, the detection point is located in the middle of the multiple cavity ports, and / or the detection point is located around the multiple cavity ports. When there are multiple feeding ports, the boss is located in the middle of the multiple feeding ports, and / or the boss is located around the multiple feeding ports.

[0035] In combination with the second aspect, in certain implementations of the second aspect, the positional relationship between the cavity port and the feeding port is judged based on the electrical connection status between the detection point and the boss, including: judging the overlap between the detection point and the boss based on the electrical connection status between the detection point and the boss, and obtaining the distance in the first direction between multiple corresponding cavity ports and feeding ports.

[0036] In combination with the second aspect, in certain implementations of the second aspect, the detection point is located in the middle of the plurality of cavity ports. Obtaining the distance between the plurality of corresponding cavity ports and the feeding port in the first direction includes: when it is detected that the detection point and the corresponding boss are electrically connected, determining that there is overlap between the detection point and the boss, obtaining the distance between the plurality of corresponding cavity ports and the feeding port in the first direction, and the distance in the first direction is less than or equal to the height of the boss. Alternatively, when it is detected that there is no electrical connection between the detection point and the corresponding boss, determining that there is no overlap between the detection point and the boss, obtaining the distance between the plurality of corresponding cavity ports and the feeding port in the first direction, and the distance in the first direction is greater than the height of the boss.

[0037] In combination with the second aspect, in certain implementations of the second aspect, when there are multiple bosses, the first boss located in the middle of the multiple feeding ports has the highest height.

[0038] In combination with the second aspect, in certain implementations of the second aspect, the first detection point is located in the middle of the plurality of cavity ports, and the second detection point is located around the plurality of cavity ports. Obtaining the distance between the plurality of corresponding cavity ports and the feeding port in the first direction includes: when it is detected that the first detection point is electrically connected to the first boss and the second detection point is not electrically connected to the corresponding second boss, determining that the first detection point and the first boss are overlapped and the second detection point and the second boss are not overlapped, obtaining the distance between the plurality of corresponding cavity ports and the feeding port in the first direction within a preset range, the preset range being related to the height of the first boss. Alternatively, when it is detected that the first detection point is electrically connected to the first boss and the second detection point is electrically connected to the corresponding second boss, determining that the first detection point and the first boss are overlapped and the second detection point and the second boss are overlapped; and obtaining the distance between the plurality of corresponding cavity ports and the feeding port in the first direction based on the height of the first boss and the height of the second boss.

[0039] In combination with the second aspect, in certain implementations of the second aspect, the positional relationship between the cavity port and the feeding port is judged based on the electrical connection status between the detection point and the boss, including: judging the overlap between the detection point and the boss based on the electrical connection status between the detection point and the boss, and obtaining the deviation distance of multiple corresponding cavity ports and feeding ports projected on the target plane, where the target plane is perpendicular to the first direction.

[0040] In combination with the second aspect, in certain implementations of the second aspect, the detection point includes a first printed pattern and a second printed pattern, the second printed pattern surrounds the first printed pattern, and the distance between the second printed pattern and the first printed pattern is a first distance. Obtaining the deviation distances of the projections of multiple corresponding cavity ports and feed ports on the target plane includes: when detecting that the first printed pattern is electrically connected to the boss and the second printed pattern is not electrically connected to the boss, determining that the first printed pattern and the boss are overlapped and the second printed pattern and the boss are not overlapped, obtaining the deviation distances of the projections of multiple corresponding cavity ports and feed ports on the target plane, and the deviation distance on the target plane is less than the first distance. Alternatively, when detecting that the first printed pattern and the boss are electrically connected and the second printed pattern and the boss are electrically connected, determining that the first printed pattern and the boss are overlapped and the second printed pattern and the boss are not overlapped, obtaining the deviation distances of the projections of multiple corresponding cavity ports and feed ports on the target plane, and the deviation distance on the target plane is greater than or equal to the first distance.

[0041] In combination with the second aspect, in certain implementations of the second aspect, the first printed graphic is a circle, the second printed graphic is a ring, the circle and the ring are concentrically arranged, and the difference between the inner diameter of the ring and the diameter of the circle is twice the first distance.

[0042] In combination with the second aspect, in certain implementations of the second aspect, the positional relationship between the cavity port and the feeding port is judged based on the electrical connection status between the detection point and the boss, including: judging the overlap between the detection point and the boss based on the electrical connection status between the detection point and the boss, and obtaining the deviation direction of multiple corresponding cavity ports and feeding ports projected on the target plane.

[0043] In conjunction with the second aspect, in certain implementations of the second aspect, the detection point includes a first printed pattern and a second printed pattern, the second printed pattern surrounding the first printed pattern, and the second printed pattern including multiple pattern segments. Obtaining deviation directions of the projections of the multiple corresponding cavity ports and feed ports on the target plane includes: upon detecting that the first printed pattern is electrically connected to the boss, a first portion of the multiple pattern segments is electrically connected to the boss, and a second portion of the multiple pattern segments is not electrically connected to the boss, determining that the first printed pattern and the boss are overlapped, that the first portion of the multiple pattern segments are overlapped, and that the second portion of the multiple pattern segments are not overlapped, and determining that the deviation directions of the projections of the multiple corresponding cavity ports and feed ports on the target plane are located in directions corresponding to the portions of the multiple pattern segments.

[0044] In combination with the second aspect, in certain implementations of the second aspect, the first printed graphic is a circle, the multiple graphic segments are multiple arc segments, the multiple arc segments have the same corresponding radius, and are all concentrically arranged around the circle.

[0045] In conjunction with the second aspect, in certain implementations of the second aspect, the method further includes: determining, based on a mapping relationship and a positional relationship between the cavity port and the feeding port, port electrical parameters corresponding to the positional relationship, the mapping relationship being used to indicate a relationship between the port electrical parameters and the positional relationship between the cavity port and the feeding port. Determining whether the cavity port and the feeding port are properly connected based on the port electrical parameters and preset electrical parameters.

[0046] In combination with the second aspect, in some implementations of the second aspect, the method further includes: sending status information, where the status information is used to indicate whether the connection status between the cavity port and the feeding port is good.

[0047] In combination with the second aspect, in some implementations of the second aspect, the method further includes: recording status information, where the status information is used to indicate whether the connection status between the cavity port and the feeding port is good.

[0048] In a third aspect, a detection device is provided for detecting the interconnection status of a radar cavity antenna and a chip. The radar includes a cavity antenna, a circuit board, and a chip. The cavity antenna, circuit board, and chip are assembled in a first direction, with the first side of the circuit board corresponding to the second side of the cavity antenna, and the second side of the circuit board corresponding to the chip. The circuit board includes a cavity port and a detection point disposed on the first side of the circuit board. The cavity antenna includes a feed port and a boss disposed on the second side of the cavity antenna. The detection point and the boss are conductive. The device includes a transceiver unit and a processing unit. The transceiver unit is configured to obtain the electrical connection status between the detection point and the boss. The processing unit is configured to determine the positional relationship between the cavity port and the feed port based on the electrical connection status between the detection point and the boss.

[0049] It should be understood that the beneficial effects brought about by the solution of the third aspect are similar to those of the first aspect and will not be elaborated here.

[0050] In conjunction with the third aspect, in certain implementations of the third aspect, the processing unit is specifically configured to determine, based on an electrical connection state between the detection point and the boss, a degree of overlap between the detection point and the boss, and to determine, based on the degree of overlap between the detection point and the boss, a positional relationship between the cavity port and the feeding port.

[0051] In conjunction with the third aspect, in certain implementations of the third aspect, the processing unit is specifically configured to, when detecting that the detection point and the boss are electrically connected, determine that there is an overlap between the detection point and the boss. Alternatively, when detecting that the detection point and the boss are not electrically connected, determine that there is no overlap between the detection point and the boss.

[0052] In conjunction with the third aspect, in certain implementations of the third aspect, when there is an overlap between the detection point and the boss, the corresponding detection circuit between the detection point and the boss is connected. Alternatively, when there is no overlap between the detection point and the boss, the corresponding detection circuit between the detection point and the boss is disconnected.

[0053] In conjunction with the third aspect, in certain implementations of the third aspect, when there are multiple cavity ports, the detection point is located in the middle of the multiple cavity ports, and / or the detection point is located around the multiple cavity ports. When there are multiple feeding ports, the boss is located in the middle of the multiple feeding ports, and / or the boss is located around the multiple feeding ports.

[0054] In combination with the third aspect, in certain implementations of the third aspect, the processing unit is specifically used to determine the overlap between the detection point and the boss based on the electrical connection status between the detection point and the boss, and obtain the distance between multiple corresponding cavity ports and feeding ports in the first direction.

[0055] In combination with the third aspect, in certain implementations of the third aspect, the detection point is located in the middle of the plurality of cavity ports. The processing unit is specifically configured to, when detecting that the detection point is electrically connected to the corresponding boss, determine that there is overlap between the detection point and the boss, obtain the distance between the plurality of corresponding cavity ports and the feeding port in the first direction, and the distance in the first direction is less than or equal to the height of the boss. Alternatively, when detecting that there is no electrical connection between the detection point and the corresponding boss, determine that there is no overlap between the detection point and the boss, obtain the distance between the plurality of corresponding cavity ports and the feeding port in the first direction, and the distance in the first direction is greater than the height of the boss.

[0056] In combination with the third aspect, in certain implementations of the third aspect, when there are multiple bosses, the first boss located in the middle of the multiple feeding ports has the highest height.

[0057] In combination with the third aspect, in certain implementations of the third aspect, the first detection point is located in the middle of the multiple cavity ports, and the second detection point is located around the multiple cavity ports. The processing unit is specifically used to, when it is detected that the first detection point is electrically connected to the first boss and the second detection point is not electrically connected to the corresponding second boss, determine that the first detection point and the first boss are overlapped, and the second detection point and the second boss are not overlapped, and obtain the distance between the multiple corresponding cavity ports and the feeding port in the first direction within a preset range, and the preset range is related to the height of the first boss. Alternatively, when it is detected that the first detection point is electrically connected to the first boss and the second detection point is electrically connected to the corresponding second boss, determine that the first detection point and the first boss are overlapped, and the second detection point and the second boss are overlapped; and obtain the distance between the multiple corresponding cavity ports and the feeding port in the first direction based on the height of the first boss and the height of the second boss.

[0058] In combination with the third aspect, in certain implementations of the third aspect, the processing unit is specifically used to determine the overlap between the detection point and the boss based on the electrical connection status between the detection point and the boss, and obtain the deviation distance of multiple corresponding cavity ports and feeding ports projected on the target plane, where the target plane is perpendicular to the first direction.

[0059] In combination with the third aspect, in certain implementations of the third aspect, the detection point includes a first printed graphic and a second printed graphic, the second printed graphic surrounds the first printed graphic, and the distance between the second printed graphic and the first printed graphic is a first distance. The processing unit is specifically configured to, when detecting that the first printed graphic is electrically connected to the boss and the second printed graphic is not electrically connected to the boss, determine that the first printed graphic and the boss are overlapped and the second printed graphic and the boss are not overlapped, obtain the deviation distances of the projections of the multiple corresponding cavity ports and the feeding ports on the target plane, and the deviation distances on the target plane are less than the first distance. Alternatively, when detecting that the first printed graphic is electrically connected to the boss and the second printed graphic is electrically connected to the boss, determine that the first printed graphic and the boss are overlapped and the second printed graphic and the boss are not overlapped, obtain the deviation distances of the projections of the multiple corresponding cavity ports and the feeding ports on the target plane, and the deviation distances on the target plane are greater than or equal to the first distance.

[0060] In combination with the third aspect, in certain implementations of the third aspect, the first printed graphic is a circle, the second printed graphic is a ring, the circle and the ring are concentrically arranged, and the difference between the inner diameter of the ring and the diameter of the circle is twice the first distance.

[0061] In combination with the third aspect, in certain implementations of the third aspect, the processing unit is specifically used to determine the overlap between the detection point and the boss based on the electrical connection status between the detection point and the boss, and obtain the deviation direction of multiple corresponding cavity ports and feeding ports projected on the target plane.

[0062] In conjunction with the third aspect, in certain implementations of the third aspect, the detection point includes a first printed pattern and a second printed pattern, the second printed pattern surrounding the first printed pattern, and the second printed pattern including multiple pattern segments. The processing unit is specifically configured to, upon detecting that the first printed pattern is electrically connected to the boss, a first portion of the multiple pattern segments is electrically connected to the boss, and a second portion of the multiple pattern segments is not electrically connected to the boss, determine that the first printed pattern and the boss are overlapped, that the first portion of the multiple pattern segments are overlapped, and that the second portion of the multiple pattern segments are not overlapped, and determine that the deviation directions of the projections of the multiple corresponding cavity ports and feeding ports on the target plane are located in directions corresponding to the portions of the multiple pattern segments.

[0063] In combination with the third aspect, in certain implementations of the third aspect, the first printed graphic is a circle, the multiple graphic segments are multiple arc segments, the multiple arc segments have the same corresponding radius, and are all concentrically arranged around the circle.

[0064] In conjunction with the third aspect, in certain implementations of the third aspect, the processing unit is further configured to determine, based on a mapping relationship and a positional relationship between the cavity port and the feeding port, port electrical parameters corresponding to the positional relationship, the mapping relationship being used to indicate a relationship between the port electrical parameters and the positional relationship between the cavity port and the feeding port. Based on the port electrical parameters and preset electrical parameters, it is determined whether the cavity port and the feeding port are properly connected.

[0065] In combination with the third aspect, in some implementations of the third aspect, the transceiver unit is further used to send status information, where the status information is used to indicate whether the connection status between the cavity port and the feeding port is good.

[0066] In combination with the third aspect, in some implementations of the third aspect, the processing unit is further used to record status information, where the status information is used to indicate whether the connection status between the cavity port and the feeding port is good.

[0067] In a fourth aspect, a detection device is provided, which includes: a memory for storing programs; a processor for executing computer program codes or instructions stored in the memory, and when the computer program codes or instructions stored in the memory are executed, the processor is used to execute the method provided in any one of the implementation modes of the above-mentioned second aspect.

[0068] In a fifth aspect, the present application provides a processor for executing the method provided by any one of the implementation modes of the second aspect above. In the process of executing these methods, the process of sending the above information and obtaining / receiving the above information in the above methods can be understood as the process of the processor outputting the above information, and the process of the processor receiving the input above information. When outputting the above information, the processor outputs the above information to the interface and transmits it through the interface. After being output by the processor, the above information may also need to undergo other processing before reaching the interface. Similarly, when the processor receives the input above information, the interface obtains / receives the above information and inputs it into the processor. Furthermore, after the interface receives the above information, the above information may need to undergo other processing before being input into the processor.

[0069] For the operations involved, such as transmission, sending, and acquisition / reception, unless otherwise specified, or if they do not conflict with their actual functions or internal logic in the relevant descriptions, they can be understood as output and reception, input and other operations, and can also be understood as transmission, sending and receiving operations performed by radio frequency circuits and antennas. This application does not limit this.

[0070] During implementation, the processor may be a processor specifically configured to execute the methods, or may be a processor that executes computer program code or instructions in a memory to execute the methods, such as a general-purpose processor. The memory may be a non-transitory memory, such as a read-only memory (ROM), which may be integrated with the processor on the same chip or may be disposed on separate chips. The embodiments of the present application do not limit the type of memory or the configuration of the memory and the processor.

[0071] In a sixth aspect, a computer-readable storage medium is provided, which stores program code or instructions for execution by a device, wherein the program code or instructions include a method for executing any one of the implementations of the second aspect.

[0072] In a seventh aspect, a computer program product comprising instructions is provided, which, when run on a computer, enables the computer to execute the method provided in any one of the implementations of the second aspect.

[0073] In an eighth aspect, a chip is provided, which includes a processor and a communication interface. The processor reads instructions stored in a memory through the communication interface and executes the method provided in any one of the implementation modes of the second aspect.

[0074] Optionally, as an implementation method, the chip may also include a memory, in which computer program code or instructions are stored, and the processor is used to execute the computer program code or instructions stored on the memory. When the computer program code or instructions are executed, the processor is used to execute the method provided in any one of the implementation methods of the above-mentioned second aspect.

[0075] In the ninth aspect, a mobile carrier is provided, which includes any possible radar in the first aspect, and the radar includes any possible device in the third aspect, or the mobile carrier includes any possible radar in the first aspect and any possible device in the third aspect.

[0076] In the present application, the mobile carrier in the present application may include road vehicles, water vehicles, air vehicles, industrial equipment, agricultural equipment, or entertainment equipment, etc. For example, the mobile carrier may be a vehicle, which is a vehicle in a broad sense, and may be a transportation vehicle (such as a commercial vehicle, a passenger car, a motorcycle, a flying car, a train, etc.), an industrial vehicle (such as a forklift, a trailer, a tractor, etc.), an engineering vehicle (such as an excavator, a bulldozer, a crane, etc.), agricultural equipment (such as a lawn mower, a harvester, etc.), amusement equipment, a toy vehicle, etc. The embodiments of the present application do not specifically limit the type of the mobile carrier.

[0077] In some possible implementations, the mobile carrier is a vehicle. BRIEF DESCRIPTION OF THE DRAWINGS

[0078] FIG1 is a schematic diagram of the working principle of a millimeter wave radar provided in an embodiment of the present application;

[0079] FIG2 is a schematic diagram of the interconnection between an antenna and a transceiver of a radar provided in an embodiment of the present application;

[0080] FIG3 is a schematic diagram of the interconnection between an antenna and a transceiver of another radar provided in an embodiment of the present application;

[0081] FIG4 is a schematic diagram of the relative positions of an air cavity antenna and a printed circuit board provided in an embodiment of the present application;

[0082] FIG5 is a partial schematic diagram of an air cavity antenna and a printed circuit board provided in an embodiment of the present application;

[0083] FIG6 is a schematic diagram showing the working principle of a detection method for a microstrip line interconnection method provided in an embodiment of the present application;

[0084] FIG7 is a schematic diagram showing the positional relationship between the feed port of the air cavity antenna and the air cavity port of the printed circuit board provided in an embodiment of the present application;

[0085] FIG8 is a schematic structural diagram of an air cavity antenna and a printed circuit board provided in an embodiment of the present application from a flat perspective;

[0086] FIG9 is a schematic diagram of the structure of an air cavity antenna and a printed circuit board provided in an embodiment of the present application from a side view;

[0087] FIG10 is a schematic diagram of an assembly of an air cavity antenna and a printed circuit board provided in an embodiment of the present application;

[0088] FIG11 is a schematic structural diagram of a voltage / current detection system provided in an embodiment of the present application;

[0089] FIG12 is a schematic structural diagram of another voltage / current detection system provided in an embodiment of the present application;

[0090] FIG13 is a schematic structural diagram of another voltage / current detection system provided in an embodiment of the present application;

[0091] FIG14 is a schematic diagram of the positional arrangement of a boss and a printed pattern provided in an embodiment of the present application;

[0092] FIG15 is a schematic diagram of a possible structure of a printed pattern provided in an embodiment of the present application;

[0093] FIG16 is a schematic flow chart of a detection method provided in an embodiment of the present application;

[0094] FIG17 is a schematic diagram of a detection principle provided in an embodiment of the present application;

[0095] FIG18 is a schematic diagram of a mapping relationship between the distance and loss between a feeding port and an air cavity port provided in an embodiment of the present application;

[0096] FIG19 is a schematic structural diagram of an air cavity antenna and a printed circuit board provided in an embodiment of the present application;

[0097] FIG20 is a schematic diagram of a current / voltage detection system corresponding to the structure shown in FIG19 provided in an embodiment of the present application;

[0098] FIG21 is a schematic structural diagram of another air cavity antenna and printed circuit board provided in an embodiment of the present application;

[0099] FIG22 is a schematic structural diagram of another air cavity antenna and printed circuit board provided in an embodiment of the present application;

[0100] FIG23 is a schematic diagram of a current / voltage detection system corresponding to the structure shown in FIG22 provided in an embodiment of the present application;

[0101] FIG24 is a schematic structural diagram of another air cavity antenna and printed circuit board provided in an embodiment of the present application;

[0102] FIG25 is a schematic diagram of a detection device provided in an embodiment of the present application;

[0103] FIG26 is a schematic structural diagram of a detection device provided in an embodiment of the present application;

[0104] Figure 27 is a schematic diagram of a chip system provided in an embodiment of the present application. DETAILED DESCRIPTION

[0105] The technical solution in this application will be described below with reference to the accompanying drawings.

[0106] To facilitate understanding of the embodiments of the present application, the following points are explained:

[0107] First, in this application, unless otherwise specified or there is a logical conflict, the terms and / or descriptions between different embodiments are consistent and can be referenced by each other. The technical features in different embodiments can be combined to form new embodiments based on their internal logical relationships.

[0108] Second, in this application, "at least one" means one or more, and "more" means two or more. "And / or" describes the association relationship of associated objects, indicating that three relationships may exist. For example, A and / or B can mean: A exists alone, A and B exist at the same time, and B exists alone, where A and B can be singular or plural. In the text description of this application, the character " / " generally indicates that the previous and next associated objects are in an "or" relationship. "At least one of the following" or similar expressions refers to any combination of these items, including any combination of single or plural items. For example, at least one of a, b and c can mean: a, or b, or c, or a and b, or a and c, or b and c, or a, b and c. Wherein a, b and c can be single or multiple, respectively.

[0109] Third, throughout this application, the terms "first," "second," and various numerical references (e.g., #1, #2, etc.) are used to distinguish between different aspects for ease of description and are not intended to limit the scope of the embodiments of this application. For example, they are used to distinguish between different aspects, rather than to describe a specific order or precedence. It should be understood that the terms described in this manner are interchangeable, where appropriate, to enable description of solutions beyond the embodiments of this application.

[0110] Fourth, in this application, expressions such as "when," "under the circumstances of," and "if" all imply that a corresponding action will be taken under certain objective circumstances. They do not limit the timeframe, do not require a judgment action to be taken when the action is taken, and do not imply any other limitations. Furthermore, the judgment action following these conditional conjunctions does not imply that the judgment action following the conditional conjunctions is the only condition for achieving the result; additional conditions may also be included to achieve the result.

[0111] Fifth, in this application, the terms "include" and "have" and any variations thereof are intended to cover non-exclusive inclusions. For example, a process, method, system, product or apparatus that includes a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units that are not explicitly listed or are inherent to these processes, methods, products or apparatuses.

[0112] Sixth, in this application, "used to indicate" can include being used for direct indication and being used for indirect indication. When describing that a certain indication information is used to indicate A, it can include that the indication information directly indicates A or indirectly indicates A, and it does not mean that the indication information must carry A.

[0113] The indication methods involved in the embodiments of this application should be understood to encompass various methods that enable the party to be indicated to obtain information to be indicated. The information to be indicated can be sent as a whole or divided into multiple sub-information and sent separately. The transmission period and / or timing of these sub-information can be the same or different. This application does not limit the specific transmission method.

[0114] Seventh, in this application, "storage" may refer to storage in one or more memories. The one or more memories may be provided separately or integrated into an encoder or decoder, a processor, or a communication device. The one or more memories may also be provided in part separately and in part integrated into a decoder, a processor, or a communication device. The memory may be any type of storage medium and is not limited in this application.

[0115] FIG1 is a schematic diagram of the working principle of a millimeter wave radar provided in an embodiment of the present application.

[0116] As shown in Figure 1, a millimeter-wave radar includes components such as an antenna, a receiver, a transmitter, a received signal processing unit, and a measurement signal generation unit. These functional units in a millimeter-wave radar can be deployed in a distributed or integrated manner. For example, the receiver and transmitter can be integrated into a single chip. Another example is the receiver, transmitter, received signal processing unit, and measurement signal generation unit can also be integrated into a single chip.

[0117] As shown in Figure 1, the measurement signal generation unit generates a measurement signal. The transmitter sends the measurement signal to the radar antenna, which converts the measurement signal into electromagnetic waves and radiates them. The electromagnetic waves reflect off an object, which the radar antenna receives and converts into a received signal. This signal is then output to the receiver. The received signal processing unit processes the received signal and outputs target information. For example, target information includes the object's distance, speed, and direction.

[0118] It should be understood that the receiver and transmitter can be deployed in a distributed or integrated manner. For the sake of simplicity, the receiver and transmitter are referred to as transceivers. The embodiments of the present application do not limit the deployment of the transceivers.

[0119] From the working principle of the millimeter-wave radar in Figure 1, it can be seen that whether the connection between the transceiver and the antenna is good will directly affect whether the millimeter-wave radar can work normally.

[0120] Currently, there are many ways to connect radar antennas and transceivers. Figure 2 is a schematic diagram of the interconnection between a radar antenna and a transceiver provided in an embodiment of the present application.

[0121] The interconnection method shown in Figure 2 is to interconnect the radar antenna and transceiver chip via a microstrip line. Figure 2(a) is a front view of this interconnection method, and Figure 2(b) is a side view of this interconnection method. As shown in Figure 2(a) or Figure 2(b), the radar antenna and transceiver chip are deployed on one side of a printed circuit board (PCB). The antenna in this interconnection method is a planar printed antenna, and the transceiver chip transmits millimeter-wave measurement signals and receives signals via microstrip lines. The printed circuit board can also be simply referred to as a printed circuit board, and is referred to as a printed circuit board below.

[0122] With the development of millimeter wave radar technology, a method of interconnecting the radar's air cavity antenna and transceiver chip through a printed circuit board air cavity has emerged. Figure 3 is a schematic diagram of another radar antenna and transceiver interconnection provided by an embodiment of the present application.

[0123] As shown in Figure 3, the printed circuit board includes a bottom surface and a top surface, referred to as PCB B-side and PCB T-side, respectively. As shown in Figure 3, the radar's transceiver chip is deployed in the air cavity of PCB B-side. For example, the radar's transceiver chip is soldered to the air cavity of PCB B-side. The radar's air cavity antenna may include a bottom surface and a top surface, referred to as antenna B-side and antenna T-side, respectively. As shown in Figure 3, the antenna B-side of the radar's air cavity antenna can be deployed on PCB T-side. The interconnection shown in Figure 3 enables the radar's receiver chip to be interconnected with the radar's antenna feed port through the PCB's air cavity.

[0124] It should be understood that the PCB B-side and PCB T-side are relative concepts, as are the antenna B-side and antenna T-side. The designations for the two sides of the air cavity antenna, and for the two sides of the PCB, may vary depending on the placement of the PCB and the air cavity antenna. The exemplary designations in the embodiments of this application are intended solely to clarify the deployment of the PCB, the radar's air cavity antenna, and the transceiver chip.

[0125] FIG4 is a schematic diagram of the relative positions of an air cavity antenna and a printed circuit board provided in an embodiment of the present application.

[0126] Figure 4 is a schematic diagram of symmetrically tiling the printed circuit board's T surface and the antenna's B surface. Figure 4 exemplarily illustrates six printed circuit board air cavity ports and six air cavity antenna feed ports. It should be understood that this embodiment of the present application does not limit the number of ports in the printed circuit board's air cavity or the number of feed ports in the air cavity antenna. This embodiment of the present application does not limit the size of the printed circuit board and the air cavity antenna; they can be the same or different, with the air cavity ports and feed ports arranged accordingly.

[0127] It should also be understood that the cavity corresponding to the air cavity port in the embodiment of the present application is an air cavity. The embodiment of the present application is explained using this as an example. The air cavity of the printed circuit board can also be a cavity filled with a medium. The embodiment of the present application does not limit the medium filling.

[0128] As shown in Figure 4 , the positions of the air cavity ports of the printed circuit board and the feed ports of the air cavity antenna are symmetrical. For example, the positional relationship between air cavity port #1 and feed port #1 in Figure 4 is shown.

[0129] Figure 5 is a partial schematic diagram of an air cavity antenna and printed circuit board provided in an embodiment of the present application. Figure 5 shows a partial cross-sectional view of the air cavity of the air cavity antenna and the air cavity of the printed circuit board. Ideally, these two air cavities are fully aligned. The interconnection between the air cavity antenna and the printed circuit board shown in Figures 3 through 5 allows radar signals to be transmitted within the air cavity.

[0130] As shown in Figure 1, the radar operating principle indicates that the connection between the radar antenna and transceiver chip is crucial for successful target detection. Therefore, it's necessary to test the connection between the radar antenna and transceiver chip. Different methods of testing these connections are applicable depending on the connection method.

[0131] Figure 6 is a schematic diagram showing the working principle of a method for detecting microstrip line interconnection provided by an embodiment of the present application. The working principle of the method for detecting the interconnection between the radar antenna and the transceiver chip via a microstrip line shown in Figure 3 is shown in Figure 6.

[0132] As shown in Figure 6, the radar transceiver chip's pins are interconnected with microstrip lines via soldering. The microstrip line is connected to ground via an inductor. The characteristic of an inductor is that it short-circuits DC signals and disconnects the radar's measurement or reception signals. Therefore, connecting the microstrip line to ground via an inductor does not affect the radar's transmission or reception of measurement signals, but it can short-circuit DC signals to ground. The radar transceiver chip includes a DC current source and a voltage detection unit. The inductor can be replaced with a microstrip band-stop filter.

[0133] As shown in Figure 6, the voltage at point A is detected to determine whether the radar transceiver chip pins and the microstrip line are properly connected. In the first case, when the voltage at point A is zero, the chip pins and the microstrip line are properly connected. In the second case, when the voltage at point A is non-zero, the chip pins and the microstrip line are poorly connected or the microstrip line is broken, while the microstrip line is directly connected to the antenna. The second case can also be interpreted as indicating a poor connection between the radar transceiver chip and the antenna, which will affect the radar's ability to detect target objects. This method can detect the connection between the radar transceiver chip and the antenna, thereby promptly detecting abnormal radar conditions.

[0134] Because the interconnection method in Figure 2 differs from that in Figures 3 through 5, DC signals cannot be transmitted between the air cavity of the air cavity antenna and the air cavity of the printed circuit board. Therefore, the detection method for the microstrip interconnection method shown in Figure 6 is not applicable to air cavity-based interconnections. A feasible solution to the detection method for the interconnection methods in Figures 3 through 5 is to add a coupler, auxiliary receiving channel, and auxiliary transmitting channel to detect abnormalities in the power at the antenna output port and the signal power received by the receiver, thereby determining whether the interconnection between the air cavity antenna and the transceiver chip is abnormal. This approach not only increases detection costs but also increases the complexity of the detection method.

[0135] When connecting antennas and transceiver chips through an air cavity, the ideal positional relationship is as shown in Figure 5, where the feed port of the air cavity antenna perfectly aligns with the air cavity port of the printed circuit board. However, in some cases, the positional relationship between these two ports is not ideal.

[0136] Figure 7 is a schematic diagram of the positional relationship between the feed port of the air cavity antenna and the air cavity port of the printed circuit board provided in an embodiment of the present application. As shown in Figure 7 (a), in three-dimensional space, the B surface of the feed port of the air cavity antenna and the T surface of the air cavity port of the printed circuit board are theoretically parallel to each other and arranged in an overlapping manner. However, there may be non-ideal conditions as shown in Figure 7 (b) or Figure 7 (c). Figure 7 (b) is a non-ideal state of the projection of the two ports on the xy plane. As shown in Figure 7 (b), the B surface of the feed port and the T surface of the air cavity port may have a deviation of a distance x in the x direction and a deviation of a distance y in the y direction. Figure 7 (c) is a non-ideal state of the projection of the two ports on the zy plane. As shown in Figure 7 (c), the B surface of the feed port and the T surface of the air cavity port may have a deviation of a distance z in the z direction.

[0137] The non-ideal state of the two-port coordination shown in Figures 7(b) and 7(c) can significantly affect the connection between the radar's air cavity antenna and the transceiver chip, and detecting this spatial deviation is difficult. Therefore, how to simply and effectively detect the interconnection status between the antenna and transceiver is an urgent problem to be solved.

[0138] To address the above issues, the present application proposes a radar and a detection method, which will be described in detail below with reference to Figures 8 to 27 .

[0139] A radar includes a cavity antenna, a circuit board, and a chip. The cavity antenna, the circuit board, and the chip are assembled in a first direction, with the first side of the circuit board and the second side of the cavity antenna assembled correspondingly, and the second side of the circuit board and the chip assembled correspondingly.

[0140] It should be understood that the cavity antenna can also be referred to as an air cavity antenna, the circuit board can also be referred to as a printed circuit board, and the chip can also be referred to as a transceiver chip. The first side of the circuit board can be understood as the T-side of the printed circuit board in the embodiment of this application, the second side of the cavity antenna can be understood as the B-side of the air cavity antenna in the embodiment of this application, and the second side of the circuit board can be understood as the B-side of the printed circuit board.

[0141] For example, the cavity antenna and the circuit board may be assembled by screwing, riveting, pressing, etc. The circuit board and the chip may be assembled by soldering the chip onto the circuit board.

[0142] Exemplarily, the radar is shown in FIG3 , where the printed circuit board T surface is assembled with the antenna B surface of the air cavity antenna, and the printed circuit board B surface is assembled with the transceiver chip of the radar.

[0143] The circuit board includes a cavity port and a detection point disposed on a first surface of the circuit board. The cavity antenna includes a feed port and a boss disposed on a second surface of the cavity antenna. The detection point and the boss are conductive. The electrical connection between the detection point and the boss is used to determine the positional relationship between the cavity port and the feed port.

[0144] It should be understood that the number of cavity ports included in the circuit board can be one or more, and the number of feeding ports included in the cavity antenna can be one or more, and the embodiments of the present application do not limit this. The number of cavity ports and the number of feeding ports are the same.

[0145] It should also be understood that the detection point can be a pattern for detection. The detection point can be a printed pattern printed on the circuit board. The specific shape of the detection point can be, for example, circular, square, or a combination of multiple patterns, which is not limited in this application. The detection point can also be called a printed pattern.

[0146] It should also be understood that the number of detection points can be one or more, and the number of bosses can be one or more. The embodiment of the present application does not limit the number of detection points and bosses, and the number of detection points and bosses is the same.

[0147] The following exemplary diagrams of the detection points on the circuit board and the deployment positions and exemplary patterns of the bosses of the cavity antenna are illustrated in Figures 8 to 15. The following uses the names of the air cavity antenna and the printed circuit board as examples, and the names of the printed patterns as examples for explanation.

[0148] Figure 8 is a schematic structural diagram of an air cavity antenna and a printed circuit board provided in an embodiment of the present application under a tiled perspective. It should be understood that the antenna B surface shown in Figure 8 is connected to the printed circuit board T surface. It should be understood that the printed circuit board T surface shown in Figure 8 (a) and the antenna B surface shown in Figure 8 (b) are symmetrical about the dotted line shown in the figure. That is, the air cavity antenna and the printed circuit board can be tiled symmetrically through the dotted line shown in the figure to obtain the printed T surface shown in Figure 8 (a) and the antenna B surface shown in Figure 8 (b). Figures 8 (a) and (b) are structural diagrams from a tiled perspective.

[0149] The air cavity antenna may include multiple feeding ports, and the printed circuit board may include multiple air cavity ports. Specifically, the antenna B surface includes multiple feeding ports, and the printed circuit board T surface includes multiple air cavity ports. The air cavity ports and the feeding ports are equal in number and correspond one to one in position. For example, there are 6 air cavity ports shown in (a) of Figure 8 and 6 feeding ports shown in (b) of Figure 8. It should be understood that the number of air cavity ports shown in (a) of Figure 8 and the number of feeding ports shown in (b) of Figure 8 are examples, and the embodiments of the present application do not limit this.

[0150] In addition, it should be understood that, in addition to the corresponding positions of the feed port and the air cavity port, the embodiments of the present application do not limit their specific positions on the antenna B surface and the printed circuit board T surface, respectively. Figures 8 (a) and (b) are only examples.

[0151] One or more bosses and one or more printed patterns are provided between the air cavity antenna and the printed circuit board.

[0152] In case 1, the air cavity antenna may further include one or more bosses, and the printed circuit board may further include one or more printed patterns.

[0153] In case 2, the air cavity antenna does not include any bosses, and the printed circuit board includes one or more bosses.

[0154] It should be understood that, in either case 1 or 2, the printed graphics on the printed circuit board can be located on the surface of the printed circuit board or sunken into the printed circuit board. Similarly, the air cavity antenna can be a flat surface or designed as a sunken surface at the corresponding position of the boss. This embodiment of the present application does not impose any restrictions on this.

[0155] It should also be understood that the embodiments of the present application do not limit the three-dimensional shape of the contact surface between the boss and the printed pattern. For example, if the contact surface between the boss and the printed pattern is flat, the corresponding printed pattern is also flat. In another example, the contact surface between the boss and the printed pattern can be a curved surface, and the printed pattern can be either a corresponding curved surface or a flat surface.

[0156] Hereinafter, the above-mentioned situation 1 will be taken as an example, and the printed pattern is located on the surface of the printing plate, and the contact surface between the boss and the printed pattern is a plane for exemplary description.

[0157] With respect to the first situation, specifically, the antenna surface B may further include one or more bosses, and the printed circuit board surface T may further include one or more printed graphics.

[0158] It should be understood that the boss and the printed pattern have good electrical conductivity. For example, the surface of the boss is made of metal, and the printed pattern can also be made of metal, specifically copper.

[0159] As a possible implementation manner, the bosses and the printed graphics are equal in number and correspond one to one in position.

[0160] As a possible implementation, when there are multiple cavity ports, the detection point is located in the middle of the multiple cavity ports, and / or the detection point is located around the multiple cavity ports. When there are multiple feeding ports, the boss is located in the middle of the multiple feeding ports, and / or the boss is located around the multiple feeding ports.

[0161] In other words, one or more bosses can be located in the middle of multiple feed ports, or one or more bosses can be located around multiple feed ports, or multiple bosses can be located in the middle and around multiple feed ports. One or more printed graphics can be located in the middle of multiple air cavity ports, or one or more printed graphics can be located around multiple air cavity ports, or multiple printed graphics can be located in the middle and around multiple air cavity ports.

[0162] As a possible implementation, when there are multiple bosses, the first boss located in the middle of the multiple feeding ports has the highest height.

[0163] In other words, the height of the boss located in the middle of the plurality of feeding ports is higher than or equal to the height of the boss located around the plurality of feeding ports.

[0164] In some implementations, the heights of the bosses around the plurality of feeding ports may be the same or different.

[0165] In some implementations, starting from a center point of the plurality of feeding ports, the height of the boss decreases as the boss moves away from the center point.

[0166] For example, the height of the boss at different distances from the center point is determined by step-by-step reduction. Alternatively, the height of the boss at different distances from the center point is determined by smooth straight line reduction or smooth curve reduction. It should be understood that the embodiment of the present application does not limit the method of determining the boss height.

[0167] It should be understood that a possible layout diagram of the relative positions of the bosses and the printed graphics will be described in detail in Figure 14. In addition, the embodiment of the present application does not limit the specific number of bosses and printed graphics.

[0168] In some implementations, the contact surface between the boss and the printed graphic can be any shape including a circle, an annulus, a solid polygon (e.g., a quadrilateral, a triangle), or a hollow polygon (e.g., a hollow quadrilateral, a hollow triangle), and the embodiments of the present application do not limit this.

[0169] In some implementations, the printed graphics may include at least one of the shapes of a circle, a ring, a sector-shaped ring segment, a square, a rectangle, etc., and the embodiments of the present application do not limit this.

[0170] It should be understood that the embodiments of the present application do not limit whether the contact surface between the boss and the printed graphic and the shape of the printed graphic are consistent. The two can be consistent or inconsistent.

[0171] It should be understood that the area of ​​the boss contact surface may be greater than, less than, or equal to the area of ​​the central figure of the printed figure, and the embodiments of the present application do not impose any limitation on this.

[0172] For example, the area of ​​the contact surface of the boss is greater than or equal to the area of ​​the central pattern of the printed pattern, so as to increase the probability of the boss and the printed pattern overlapping.

[0173] It should be understood that specific possible shapes of the printed image will be described in detail in FIG. 15 .

[0174] For example, FIG8(a) shows five printed patterns, and FIG8(b) shows five bosses. The five printed patterns in FIG8(a) include a printed pattern M located in the middle of the air cavity port, and printed patterns S1, S2, S3, and S4 located around the air cavity port. The five bosses in FIG8(b) include a boss M located in the middle of the feed port, and bosses 1, 2, 3, and 4 located around the feed port.

[0175] FIG9 is a schematic structural diagram of an air cavity antenna and a printed circuit board provided in an embodiment of the present application from a side view.

[0176] As shown in Figure 9, the multiple feed ports on the B side of the air cavity antenna correspond one-to-one with the multiple air cavity ports on the T side of the printed circuit board. Similarly, the multiple bosses on the B side of the antenna correspond one-to-one with the multiple printed patterns on the T side of the printed circuit board.

[0177] FIG10 is a schematic diagram of an assembly of an air cavity antenna and a printed circuit board provided in an embodiment of the present application.

[0178] The air cavity antenna and printed circuit board are assembled using various methods, including screwing, riveting, and crimping. The example shown in Figure 10 uses screwing. The ideal connection between the air cavity antenna and printed circuit board is parallel to each other, with balanced stress at the overlap. However, as shown in Figure 10, the antenna's B-side and T-side are often non-parallel. In this case, there is a relative distance between the feed port on the antenna's B-side and the air cavity port on the printed circuit board's T-side.

[0179] The relative distance between the feed port and the air cavity port can be a single value or a range, and is not limited in this embodiment of the present application. The relative distance can also be understood as the distance between the air cavity antenna and the printed circuit board in the z-direction. Alternatively, the relative distance can also be understood as the distance between the cavity port and the feed port in the first direction.

[0180] As a possible implementation manner, the electrical connection state between the detection point and the boss is specifically used to determine the overlap between the detection point and the boss, and obtain the distances between multiple corresponding cavity ports and feeding ports in the first direction.

[0181] In other words, the electrical connection state between the printed pattern and the boss is specifically used to determine the overlap between the printed pattern and the boss, and to obtain the distances between the multiple corresponding air cavity ports and the feeding ports in the z direction.

[0182] As a possible implementation, the detection point is located in the middle of the multiple cavity ports. When the detection point and the corresponding boss are electrically connected, there is an overlap between the detection point and the boss, and the distance between the multiple corresponding cavity ports and the feeding port in the first direction is less than or equal to the height of the boss. Alternatively, when the detection point and the corresponding boss are not electrically connected, there is no overlap between the detection point and the boss, and the distance between the multiple corresponding cavity ports and the feeding port in the first direction is greater than the height of the boss.

[0183] In this way, the distance ranges between a plurality of corresponding cavity ports and feeding ports in the z direction can be determined through a boss and a detection point, thereby further determining the positional relationship between the cavity port and the feeding port.

[0184] As a possible implementation, when there are multiple bosses, the first boss located in the middle of the multiple feeding ports has the highest height.

[0185] As a possible implementation, the first detection point is located in the middle of the multiple cavity ports, and the second detection point is located around the multiple cavity ports. When the first detection point is electrically connected to the first boss and the second detection point is not electrically connected to the corresponding second boss, there is an overlap between the first detection point and the first boss, and there is no overlap between the second detection point and the second boss. The distance between the multiple corresponding cavity ports and the feeding port in the first direction is within a preset range, and the preset range is related to the height of the first boss. Alternatively, when the first detection point is electrically connected to the first boss and the second detection point is electrically connected to the corresponding second boss, there is an overlap between the first detection point and the first boss, and there is an overlap between the second detection point and the second boss. The distance between the multiple corresponding cavity ports and the feeding port in the first direction is obtained based on the height of the first boss and the height of the second boss.

[0186] It should be understood that the preset range is greater than the height of the first boss minus the first value, and the preset range is less than the height of the first boss plus the second value. The first value and the second value may be equal or unequal, and the first value and the second value are not zero.

[0187] It should be understood that there may be many ways to determine the distances between the multiple corresponding cavity ports and the feeding ports in the first direction, and the present embodiment does not limit the specific determination method.

[0188] As shown in Figure 10, the boss M overlaps with the printed pattern M, and the boss 1 overlaps with the printed pattern S1. The distance h between the air cavity port #n of the printed circuit board and the feed port #n of the antenna is n Satisfies formula (1).

[0189] Among them, d n represents the distance between the air cavity port #n and the center point, as shown in Figure 8(a). Or, d n Indicates the distance between the feed port #n and the center point. H1 indicates the height of the boss 1, H m Indicates the height of the boss M.

[0190] It should be understood that if other bosses and other printed patterns M are overlapped, the relative distance between the air cavity port and the feeding port in the z direction can also be obtained in a manner similar to formula (1).

[0191] The electrical connection state between the boss and the printed pattern as shown in FIG10 can be determined by deploying a voltage / current detection system at the printed pattern.

[0192] As a possible implementation, the electrical connection state between the detection point and the boss is specifically used to determine the overlap between the detection point and the boss. The overlap between the detection point and the boss is used to determine the positional relationship between the cavity port and the feeding port.

[0193] In other words, the electrical connection between the printed pattern and the boss is used to determine the overlap between the printed pattern and the boss, and the overlap between the printed pattern and the boss is used to determine the positional relationship between the air cavity port and the feed port.

[0194] In some implementations, when the detection point and the boss are electrically connected, there is an overlap between the detection point and the boss. Alternatively, when the detection point and the boss are not electrically connected, there is no overlap between the detection point and the boss.

[0195] In other words, when the printed pattern and the boss are electrically connected, there is an overlap between the printed pattern and the boss. Alternatively, when the printed pattern and the boss are not electrically connected, there is no overlap between the printed pattern and the boss.

[0196] It should be understood that the specific situation of the electrical connection between the printed image and the boss will be described in detail in conjunction with different types of detection circuits in Figures 11 to 13.

[0197] In some implementations, when there is an overlap between the detection point and the boss, the corresponding detection circuit between the detection point and the boss is turned on. Alternatively, when there is no overlap between the detection point and the boss, the corresponding detection circuit between the detection point and the boss is turned off.

[0198] In other words, when there is overlap between the printed pattern and the boss, the corresponding detection circuit between the printed pattern and the boss is turned on. Alternatively, when there is no overlap between the printed pattern and the boss, the corresponding detection circuit between the printed pattern and the boss is turned off.

[0199] FIG11 is a schematic structural diagram of a voltage / current detection system provided in an embodiment of the present application.

[0200] As shown in FIG11(a), each printed pattern can correspond to a voltage / current detection system, which includes a reference voltage source or reference current source, a voltage or current detection unit, a voltage divider resistor, and a printed pattern interface. The specific connection method of the current / voltage detection system can be to connect the reference voltage source or reference current source to one end of resistor 1 in the voltage divider resistor, and the other end of resistor 1 is respectively connected to the voltage / current detection unit, the printed pattern, and one end of resistor 2 in the voltage divider resistor. The other end of resistor 2 is grounded. The ground end of resistor 2 can be specifically connected to the ground plane G on the T surface of the printed circuit board. It should be understood that the voltage / current detection system shown in FIG11(a) is a specific form of detection circuit.

[0201] As shown in Figure 11(b), printed patterns S1, S2, S3, S4, and M each have their own current / voltage detection circuits, as shown in Figure 11(a). The ground terminal of the voltage / current detection system is connected to the ground plane G on the T surface of the printed circuit board, and the antenna housing is well bonded to the printed circuit board's ground plane.

[0202] Among them, the printed pattern corresponding to the boss on the printed circuit board is made of copper foil on the surface of the printed circuit board through a printed circuit board processing technology.

[0203] In some implementations, if the voltage of the printed pattern connected to the detection unit is low or current flows through it, there is an overlap between the printed pattern corresponding to the detection unit and the boss.

[0204] In some implementations, if the voltage of the printed pattern connected to the detection unit is high or no current flows through it, there is no overlap between the printed pattern corresponding to the detection unit and the boss.

[0205] For example, as shown in FIG11( b ), if the voltage / current detection system detects that the voltage between printed pattern M and printed pattern S1 is low, or detects that current is flowing through printed pattern M and printed pattern S1, then it is determined that boss M and printed pattern M are overlapped, and boss 1 and printed pattern S1 are overlapped. If the voltage / current detection system detects that the voltage between printed pattern S2, printed pattern S3, or printed pattern S4 is high, or does not detect that current is flowing through printed pattern S2, printed pattern S3, or printed pattern S4, then it is determined that boss 2 and printed pattern S2 are not overlapped, boss 3 and printed pattern S3 are not overlapped, or boss 4 and printed pattern S4 are not overlapped.

[0206] The voltage / current detection system shown in Figure 11 requires that the printed circuit board and the air cavity antenna be well grounded to each other. Figure 12 is a schematic diagram of the structure of another voltage / current detection system provided in an embodiment of the present application.

[0207] It should be understood that the voltage / current detection system shown in Figure 12 does not require a good grounding between the printed circuit board and the antenna. As shown in Figure 12, printed pattern S1, printed pattern S2, printed pattern S3, printed pattern S4, and printed pattern S0 (also known as printed pattern M) on the T surface of the printed circuit board are respectively interconnected with the detection circuit shown in Figure 12. The micro control unit input and output (MCU_IOn) in Figure 12 is a general-purpose input / output (IO) interface of the digital signal processor, which can output high and low levels and detect high and low input levels. For example, MCU_IO0 is the general-purpose IO interface of the digital signal processor corresponding to printed pattern S0. Similarly, each printed pattern corresponds to a general-purpose MCU_IO.

[0208] Specifically, as shown in FIG12 , MCU_IOn is connected to one end of resistor 1 in the voltage divider resistor, the other end of resistor 1 is connected to the printed pattern Sn and one end of resistor 2 in the voltage divider resistor, and the other end of resistor 2 is grounded.

[0209] As a possible implementation, the detection levels corresponding to the multiple MCU_IOs are used to determine the overlap between the printed pattern and the boss.

[0210] Specifically, at any detection moment, only one of MCU_IO0 to MCU_IO4 serves as an output port, outputting a high level, and the remaining MCU_IOn are input ports, detecting the high and low input levels. After MCU_IO0 to MCU_IO4 complete the high-level output in turn, the detection levels corresponding to multiple MCU_IOs are used to determine the overlap between the printed pattern and the boss.

[0211] In some implementations, if the first MCU_IO port outputs a high level and the other MCU_IO ports input a low level, then the printed pattern corresponding to the first MCU_IO port and the boss are overlapped.

[0212] In some implementations, if the first MCU_IO port outputs a high level and the remaining MCU_IO ports input a high level, then the printed patterns and bosses corresponding to the remaining MCU_IO ports overlap.

[0213] For example, if the MCU_IO0 port outputs a high level and the inputs of the other MCU_IO ports are all low levels, it can be determined that the printed pattern S0 corresponding to MCU_IO0 is well connected to the boss 0 (that is, the aforementioned boss M). If the MCU_IO0 port outputs a high level and MCU_IO2 and MCU_IO3 detect high levels as input, it can be determined that the printed patterns S0, S2, and S3 are well connected to the bosses 0, 2, and 3, respectively.

[0214] Figure 13 is a schematic diagram of the structure of another voltage / current detection system provided in an embodiment of the present application. It should be understood that the voltage / current detection system shown in Figure 13 also does not require the printed circuit board and the antenna to be well grounded to each other.

[0215] As shown in Figure 13, printed pattern S1, printed pattern S2, printed pattern S3, printed pattern S4, and printed pattern S0 (also known as printed pattern M) on surface T of the printed circuit board are interconnected with the detection circuit shown in Figure 13. The detection circuit in Figure 13 determines the overlap between the printed pattern and the boss by measuring the voltage value using an analog-to-digital converter (ADC).

[0216] Specifically, the voltage source is connected to one end of resistor 1 in the voltage divider resistor, the other end of resistor 1 is connected to the printed pattern Sn, ADCn and one end of resistor 2 in the voltage divider resistor, and the other end of resistor 2 is grounded.

[0217] It should be understood that a printed pattern can include an ADC, and different printed patterns can correspond to different voltage divider resistor values. This allows different printed images to correspond to different voltage divider values. For example, printed pattern S1 corresponds to ADC1.

[0218] As a possible implementation, the measured value of the ADC corresponding to the printed pattern is used to determine the overlap between the printed pattern and the boss.

[0219] For example, assuming that the voltage in the voltage detection system corresponding to the printed pattern S0 is 1.8V, the resistance value of resistor 1 is 20kΩ, and the resistance value of resistor 2 is 5kΩ; assuming that the voltage in the voltage detection system corresponding to the printed pattern S1 is 1.8V, the resistance value of resistor 1 is 20kΩ, and the resistance value of resistor 2 is 20kΩ.

[0220] If ADC0 detects a voltage of 0.36V, printed pattern S0 is not in contact with the bump. If ADC1 detects a voltage of 0.9V, printed pattern S1 is not in contact with the bump. If both ADC0 and ADC1 detect an input voltage of approximately 0.51V, both printed patterns S0 and S1 are in contact with the antenna bump.

[0221] It should be understood that any of the current / voltage detection systems in Figures 11 to 13 can determine the overlap between the boss of the air cavity antenna and the printed pattern of the printed circuit board, and the overlap can specifically include determining whether the boss and the printed pattern overlap.

[0222] The following will describe in detail the possible position distribution of the bosses and the printed pattern in conjunction with FIG. 14 , and describe in detail the possible specific patterns of the printed pattern in conjunction with FIG. 15 .

[0223] Figure 14 is a schematic diagram illustrating the placement of bosses and printed patterns according to an embodiment of the present application. It should be understood that the positions and number of antenna feed ports on side B and the air cavity ports on the printed circuit board shown in (a), (b), (c), and (d) of Figure 14 are examples. It should be understood that the embodiments of the present application do not limit the possible placement of bosses and printed patterns; Figure 14 only illustrates some examples.

[0224] As shown in Figure 14(a), antenna surface B includes a boss M located in the middle of the feed port on antenna surface B, which can also be the middle of the entire antenna surface B. PCB surface T includes a printed pattern M located in the middle of the air cavity port on PCB surface T, which can also be the middle of the entire PCB surface T.

[0225] It should be understood that FIG14( a) only shows one printed pattern M and one boss M located at the center. For situations where there is only one boss on the antenna B side and only one printed pattern on the printed circuit board T side, the embodiments of the present application do not limit their specific corresponding positions; they can be located anywhere except the air cavity port on the printed circuit board T side and the feed port on the antenna B side.

[0226] In this way, the cooperation of a boss and a printed pattern can detect whether the printed circuit board and the air cavity antenna are connected.

[0227] As shown in Figure 14(b), the antenna surface B may include multiple bosses distributed around the feed port, such as boss 1, boss 2, boss 3, and boss 4. The printed circuit board surface T may also include multiple printed patterns S1, printed pattern S2, printed pattern S3, and printed pattern S4 distributed around the air cavity port.

[0228] It should be understood that the bosses around the feeding port can be evenly distributed or unevenly distributed, and the printed patterns around the air cavity port can be evenly distributed or unevenly distributed.

[0229] The evenly distributed bosses around the feeding port can be understood as the distance between each evenly distributed boss and boss M being the same. The evenly distributed printed patterns around the air cavity port can be understood as the distance between each evenly distributed printed pattern and printed pattern M being the same.

[0230] The non-uniform distribution of bosses around the feed port can be understood as meaning that the distances between some of the bosses around the feed port and the boss M are the same or different, or that the distances between all of the bosses around the feed port and the boss M are different. The non-uniform distribution of printed patterns around the air cavity port can be understood as meaning that the distances between some of the printed patterns around the air cavity port and the printed pattern M are the same or different, or that the distances between all of the printed patterns around the air cavity port and the printed pattern M are different.

[0231] In this way, when the printed pattern is distributed around the air cavity port and the boss is distributed around the feeding port, the detection result obtained by the detection unit is more reliable and the detection dimension is more complete.

[0232] As shown in Figure 14(c), antenna surface B may include a boss M located in the middle of the feed port on antenna surface B. Antenna surface B may also include multiple bosses evenly distributed around the feed port, such as boss 1, boss 2, boss 3, and boss 4. PCB surface T includes a printed pattern M located in the middle of the air cavity port on printed board surface T. PCB surface T may also include multiple printed patterns S1, S2, S3, and S4 evenly distributed around the air cavity port.

[0233] It should be understood that FIG14( c ) is only an example, and the embodiment of the present application does not limit the distance between the evenly distributed bosses and the bosses M. Similarly, the embodiment of the present application does not limit the distance between the evenly distributed printed patterns and the printed patterns M.

[0234] In this way, the evenly distributed and centrally located bosses and printed patterns can help effectively detect the deviation between the air cavity antenna and the printed circuit board in the z direction, making the detection dimension more complete.

[0235] As shown in Figure 14(d), antenna surface B may include a boss M located in the middle of the feed port of antenna surface B. Antenna surface B may also include multiple bosses unevenly distributed around the feed port, such as boss 1, boss 2, boss 3, and boss 4. PCB surface T includes a printed pattern M located in the middle of the air cavity port of printed board surface T. PCB surface T may also include multiple printed patterns S1, printed pattern S2, printed pattern S3, and printed pattern S4 unevenly distributed around the air cavity port.

[0236] FIG14(d) shows that the distances between boss 1 and boss 4 and boss M are the same, the distances between boss 2 and boss 3 and boss M are the same, and the distances between boss 1 and boss 2 and boss M are different. FIG14(d) shows that the distances between printed pattern S1 and printed pattern S4 and printed pattern M are the same, the distances between printed pattern S2 and printed pattern S3 and printed pattern M are the same, and the distances between printed pattern S1 and printed pattern S2 and printed pattern M are different.

[0237] In this way, by means of the non-uniformly distributed printed patterns on the air cavity ports and the non-uniformly distributed bosses on the feeding ports, as well as the printed patterns and bosses at the center position, the detection results can be more reliable and the detection dimensions can be more complete.

[0238] It should be understood that the overlap position of the printed graphics and the boss can be determined based on the assembly stress of the printed circuit board and the antenna and / or the specific structure of the two. Figure 14 only provides some exemplary overlap positions for the embodiments of the present application. The embodiments of the present application include but are not limited to the overlap positions shown in Figure 14.

[0239] The printed pattern on the T-side of a printed circuit board can have the following functions. Figure 15 is a schematic diagram of a possible structure of a printed pattern provided in an embodiment of the present application. It should be understood that Figure 15 is merely an example of a combination of one or more of a circle, annulus, or sector-shaped annulus segments as the base pattern. The printed pattern described below is not limited to the specific pattern shown in Figure 15.

[0240] As a possible implementation, the printed pattern on the T side of the printed circuit board and the boss on the B side of the antenna are used to detect whether the printed pattern and the boss are overlapped.

[0241] In some possible implementations, the printed graphic includes a single graphic, which may be in a shape such as a circle, a square, or a rectangle.

[0242] As a possible implementation method, the printed pattern on the T side of the printed circuit board and the boss on the B side of the antenna are used to detect whether the planes corresponding to the air cavity port and the feeding port are parallel and overlapped, or to detect whether there is a large range of deviation between the projection of the feeding port of the air cavity antenna and the air cavity port of the printed circuit board in the xy plane.

[0243] In some possible implementations, the printed graphics may include multiple identical graphics, each of which may be in the shape of a sector, a square, a rectangle, etc. It should be understood that the "same" here refers to the same shape, not the same area.

[0244] Taking a sector-shaped pattern as an example, as shown in Figure 15(a), the printed pattern on the T surface of the printed circuit board includes four sectors of equal area. As shown in Figure 15(b), the printed pattern on the T surface of the printed circuit board includes four sectors, two of which have the same area and two of which have different areas.

[0245] In this way, compared with a printed pattern with a single pattern, a printed pattern including multiple identical patterns can not only detect whether the air cavity antenna and the printed circuit board are overlapped, but also detect whether the two overlapping planes are parallel, or the two overlapping planes are parallel but there is a large range of deviation in the xy plane.

[0246] As a possible implementation method, the electrical connection status between the detection point and the boss is specifically used to determine the overlap between the detection point and the boss, and obtain the deviation distance of multiple corresponding cavity ports and feeding ports projected on the target plane, where the target plane is perpendicular to the first direction.

[0247] In other words, the electrical connection state between the printed pattern and the boss is specifically used to determine the overlap between the printed pattern and the boss, and to obtain the deviation distances of the projections of multiple corresponding cavity ports and feeding ports on the target plane.

[0248] In some implementations, the detection point includes a first printed pattern and a second printed pattern, the second printed pattern surrounds the first printed pattern, and the distance between the second printed pattern and the first printed pattern is a first distance.

[0249] Specifically, the inspection points on the T surface of the printed circuit board may include a pattern #1 and one or more annular patterns related to the pattern #1.

[0250] In certain implementations, when the first printed pattern and the boss are electrically connected and the second printed pattern and the boss are not electrically connected, there is overlap between the first printed pattern and the boss and there is no overlap between the second printed pattern and the boss, and the deviation distance of the projections of the multiple corresponding cavity ports and feeding ports on the target plane is less than the first distance.

[0251] In certain implementations, when the first printed pattern and the boss are electrically connected and the second printed pattern and the boss are electrically connected, there is overlap between the first printed pattern and the boss and there is no overlap between the second printed pattern and the boss, and the deviation distance of the projections of the multiple corresponding cavity ports and feeding ports on the target plane is greater than or equal to the first distance.

[0252] Specifically, the first printed pattern is a circle, the second printed pattern is a ring, the circle and the ring are concentrically arranged, and the difference between the inner diameter of the ring and the diameter of the circle is twice the first distance.

[0253] It should be understood that the following description is made by taking the target plane as the xy plane as an example.

[0254] For example, taking the shape #1 as a circle, the annular shape related to the shape #1 is a ring. As shown in FIG15(c), the printed shape on the T surface of the printed board includes a circle M A and one with the circular M A Concentric ring M with distance dr1 r1 Where the first distance is dr1. If the area and shape of the boss are the same as the circular M A If the two surfaces of the air cavity are the same, the overlap between the printed pattern and the boss shown in FIG15( c ) can be used to determine whether the deviation between the feeding port and the air cavity port on the xy plane is greater than or equal to dr1.

[0255] It should also be understood that the embodiment of the present application does not limit the number of the second printed graphics. For example, the second printed graphics are multiple annular graphics with the same shape, different areas, and a certain distance between them.

[0256] For example, as shown in FIG15(d), the printed pattern of the printed board T includes a circular M A , one with the circular M A Concentric ring M with distance dr1 r1 and a concentric ring M r1 Concentric ring M with distance dr2 r2 Where, the first distance is dr1 and the second distance is dr2. If the area and shape of the boss are the same as the circle M A Same, and assuming concentric rings M r1 The width of the air cavity port is r1, and the printed pattern shown in (c) of Figure 15 can determine the deviation range of the feeding port and the air cavity port on the xy plane, and the deviation range may include the range of [dr1, dr1+r1+dr2), or the range of [0, dr1), or the range of [dr1+r1+dr2, +∞).

[0257] For another example, the shape #1 can be a square, in which case the annular shape associated with the shape #1 can be a square annular shape. For another example, the shape #1 can be a rectangle, in which case the annular shape associated with the shape #1 can be a rectangular annular shape.

[0258] In this way, the deviation range of the feed port and the air cavity port on the xy plane can be determined. It should be understood that the embodiment of the present application does not limit the number of annular patterns. The greater the number of annular patterns, the more accurate the deviation range of the feed port and the air cavity port on the xy plane.

[0259] In certain implementations, the electrical connection state between the detection point and the boss is specifically used to determine the overlap between the detection point and the boss and obtain the deviation direction of the projections of multiple corresponding cavity ports and feeding ports on the target plane.

[0260] In other words, the electrical connection state between the printed pattern and the boss is specifically used to determine the overlap between the printed pattern and the boss, and to obtain the deviation directions of the projections of multiple corresponding cavity ports and feeding ports on the target plane.

[0261] In some implementations, the detection point includes a first printed pattern and a second printed pattern, the second printed pattern surrounds the first printed pattern, and the second printed pattern includes a plurality of pattern segments.

[0262] Specifically, the printed pattern on the T surface of the printed circuit board may include a pattern #2 and a plurality of annular pattern segments related to the pattern #2.

[0263] In some implementations, the plurality of annular graphic segments may be evenly distributed around the graphic #2. Alternatively, the plurality of annular graphic segments may be non-evenly distributed around the graphic #2.

[0264] In certain implementations, when the first printed graphic is electrically connected to the boss, the first portion of the multiple graphic segments is electrically connected to the boss, and the second portion of the multiple graphic segments is not electrically connected to the boss, there is overlap between the first printed graphic and the boss, there is overlap between the first portion of the multiple graphic segments and the boss, there is no overlap between the second portion of the multiple graphic segments and the boss, and the deviation directions of the multiple corresponding cavity ports and feeding ports projected on the target plane are located in directions corresponding to some of the multiple graphic segments.

[0265] In certain implementations, the first printed graphic is a circle, the multiple graphic segments are multiple arc segments, the multiple arc segments have the same radius, and are all concentrically arranged around the circle.

[0266] Taking the circular shape of pattern #2 as an example, the annular pattern segment related to pattern #2 is a circular ring segment. As shown in FIG15(e), the printed pattern on the T surface of the printed board includes a circular M A and four with the circular M A Concentric ring segment M with distance dr1 r1+x1 、M r1+y2 、M r1+x2 and M r1+y1 The arc of the gap between each concentric ring segment is The length of each concentric ring segment is θ in arc.

[0267] The concentric ring segments shown in (e) of FIG15 and θ can satisfy formula (2).

[0268] Where R is the radius of the boss, where the contact surface is the same area as circle #2. dr1 represents the contact area between each concentric ring segment and circle M. A r1 represents the width of each concentric ring segment. D represents the shape M A radius.

[0269] As shown in FIG15(f), the printed pattern on the T surface of the printed board includes a circular M A and eight with the circular M A Concentric ring segment M with distance dr1 r1+x1 、M r1+x2 、M r1+y3 、M r1+y4 、M r1+x3 、M r1+x4 、M r1+y1 and M r1+y2 The design of the concentric ring segments in FIG15(f) is similar to that in FIG15(e).

[0270] For another example, graphic #2 may be a square, and the annular graphic segments associated with graphic #2 may be multiple rectangles or squares distributed around graphic 2. Of course, other graphic designs are possible, and the present embodiment does not limit this.

[0271] In this implementation, in addition to determining the deviation range of the feed port and the air cavity port on the xy plane, the deviation direction can also be determined. It should be understood that the embodiments of the present application do not limit the number of annular pattern segments; the greater the number of annular pattern segments, the more accurate the deviation direction of the feed port and the air cavity port on the xy plane.

[0272] It should be understood that for the circular M in (c), (d), (e) and (f) of FIG. 15 A , replaced by multiple identical sectors, similar to (a) or (b) of Figure 15. This embodiment of the present application does not limit this.

[0273] Figure 16 is a flow chart illustrating a detection method provided in an embodiment of the present application. This detection method is applied to a radar system comprising a cavity antenna, a circuit board, and a chip. The cavity antenna, circuit board, and chip are assembled in a first orientation, with the first side of the circuit board aligned with the second side of the cavity antenna, and the second side of the circuit board aligned with the chip. The printed circuit board includes a cavity port and a detection point on the first side of the circuit board. The cavity antenna includes a feed port and a protrusion on the second side of the cavity antenna. The detection point and protrusion are conductive.

[0274] It should be understood that the structure of the radar to which the detection method is applied can be any one of the structures in Figures 8, 9, and 10, and the deployment method of the detection points and the bosses, and the possible shapes of the detection points can be any one of those shown in Figures 14 and 15.

[0275] S1601, obtaining the electrical connection status between the detection point and the boss.

[0276] It should be understood that the electrical connection status between the detection point and the boss can be obtained by the detection unit of any one of the detection circuits in Figures 11 to 13.

[0277] S1602 : Determine the positional relationship between the cavity port and the feeding port according to the electrical connection state between the detection point and the boss.

[0278] In some implementations, the overlap between the detection point and the boss is determined based on the electrical connection between the detection point and the boss, and the positional relationship between the cavity port and the feeding port is determined based on the overlap between the detection point and the boss.

[0279] Specifically, when it is detected that the detection point and the boss are electrically connected, it is determined that there is overlap between the detection point and the boss. Alternatively, when it is detected that there is no electrical connection between the detection point and the boss, it is determined that there is no overlap between the detection point and the boss.

[0280] When there is an overlap between the detection point and the boss, the corresponding detection circuit between the detection point and the boss is turned on. Alternatively, when there is no overlap between the detection point and the boss, the corresponding detection circuit between the detection point and the boss is turned off.

[0281] It should be understood that the detection circuit can be specifically described with reference to any one of FIG. 11 to FIG. 13 , and will not be described in detail here.

[0282] It should be understood that the positional relationship between the cavity port and the feeding port may include one or more of the following positional relationships: the distance between the feeding port and the cavity port in the z direction, the deviation range of the feeding port and the cavity port projected on the xy plane, and the deviation direction of the feeding port and the cavity port projected on the xy plane.

[0283] The offset distance between the feed port and the air cavity port in the z direction can be determined according to the height of the boss and the overlap between the boss and the printed pattern. Specific examples have been described in detail in the relevant description of FIG10 and will not be repeated here.

[0284] As a possible implementation method, the overlap between the detection point and the boss is determined according to the electrical connection state between the detection point and the boss, and the distances between multiple corresponding cavity ports and feeding ports in the first direction are obtained.

[0285] In certain implementations, the detection point is located in the middle of the plurality of cavity ports. When an electrical connection is detected between the detection point and the corresponding boss, it is determined that there is overlap between the detection point and the boss, and the distances between the plurality of corresponding cavity ports and the feeding port in a first direction are obtained, where the distances in the first direction are less than or equal to the height of the boss. Alternatively, when no electrical connection is detected between the detection point and the corresponding boss, it is determined that there is no overlap between the detection point and the boss, and the distances between the plurality of corresponding cavity ports and the feeding port in the first direction are obtained, where the distances in the first direction are greater than the height of the boss.

[0286] In certain implementations, when there are multiple bosses, the first boss located in the middle of the multiple feeding ports has the highest height.

[0287] In certain implementations, the first detection point is located in the middle of the plurality of cavity ports, and the second detection point is located around the plurality of cavity ports. When it is detected that the first detection point is electrically connected to the first boss, and the second detection point is not electrically connected to the corresponding second boss, it is determined that the first detection point and the first boss are overlapped, and the second detection point and the second boss are not overlapped. The distances in the first direction between the plurality of corresponding cavity ports and the feeding port are obtained, and the distances in the first direction are within a preset range, which is related to the height of the first boss.

[0288] In certain implementations, when it is detected that the first detection point is electrically connected to the first boss and the second detection point is electrically connected to the corresponding second boss, it is determined that the first detection point and the first boss are overlapped, and the second detection point and the second boss are overlapped. Based on the height of the first boss and the height of the second boss, the distances in the first direction between the plurality of corresponding cavity ports and the feeding ports are obtained.

[0289] Specifically, the distances between a plurality of corresponding cavity ports and feeding ports in the first direction can be obtained by referring to formula (1).

[0290] As a possible implementation method, the overlap between the detection point and the boss is judged according to the electrical connection status between the detection point and the boss, and the deviation distance of multiple corresponding cavity ports and feeding ports projected on the target plane is obtained, and the target plane is perpendicular to the first direction.

[0291] The deviation distance and deviation direction of the cavity port and the feeding port on the target plane will be described in detail in conjunction with FIG17 .

[0292] FIG17 is a schematic diagram of a detection principle provided by an embodiment of the present application. It should be understood that FIG17(a) is a detailed description of a method for determining the deviation distance on the target plane in combination with FIG15(c) and any one of the detection systems in FIG11 to FIG13. FIG17(b) is a detailed description of a method for determining the deviation direction on the target plane in combination with FIG15(e) and any one of the detection systems in FIG11 to FIG13. The following description takes the target plane as the xy plane as an example.

[0293] As a possible implementation method, the detection point includes a first printed graphic and a second printed graphic, the second printed graphic surrounds the first printed graphic, and the distance between the second printed graphic and the first printed graphic is a first distance. When detecting that the first printed graphic and the boss are electrically connected, and the second printed graphic and the boss are not electrically connected, it is determined that the first printed graphic and the boss are overlapped, and the second printed graphic and the boss are not overlapped, and the deviation distances of the multiple corresponding cavity ports and feeding ports projected on the target plane are obtained, and the deviation distances on the target plane are less than the first distance. When detecting that the first printed graphic and the boss are electrically connected, and the second printed graphic and the boss are electrically connected, it is determined that the first printed graphic and the boss are overlapped, and the second printed graphic and the boss are not overlapped, and the deviation distances of the multiple corresponding cavity ports and feeding ports projected on the target plane are obtained, and the deviation distances on the target plane are greater than or equal to the first distance

[0294] As shown in FIG. 17( a ), if the detection unit in the detection system detects the antenna boss and the pattern M A and Graphics M r1 At the same time, it is determined that the deviation between the feeding port and the air cavity port on the xy plane is greater than or equal to dr1. For example, assuming that the detection system is a voltage / current detection system as shown in FIG11, if the graph M A and Graphics M r1 The corresponding detection results indicate the graph M A and Graphics M r1 If the voltage is low or current flows, the boss and the pattern MA and the pattern M are determined. r1 At the same time overlap.

[0295] If the detection unit in the detection system detects the antenna protrusion and the pattern M A Lap, but and graphic M r1 If the feed port and the air cavity port are not overlapped, it is determined that the deviation between the feed port and the air cavity port on the xy plane is less than dr1. For example, assuming that the detection system is a voltage / current detection system as shown in FIG11, if the graph MA The corresponding detection result indicates that the voltage of the graph is low or current is flowing, and the graph M r1 The corresponding detection result indication graphic M r1 If the voltage is high or no current flows, it is determined that the boss is only connected to the graph M. A Overlap, and the boss does not overlap with the graphic M r1 It should be understood that FIG17( a ) only shows the case of simultaneous overlapping.

[0296] As a possible implementation method, the overlap between the detection point and the boss is determined according to the electrical connection state between the detection point and the boss, and the deviation direction of the projections of multiple corresponding cavity ports and feeding ports on the target plane is obtained.

[0297] In certain implementations, the detection point includes a first printed pattern and a second printed pattern, the second printed pattern surrounding the first printed pattern, and the second printed pattern including a plurality of pattern segments. Upon detecting that the first printed pattern is electrically connected to the boss, a first portion of the plurality of pattern segments is electrically connected to the boss, and a second portion of the plurality of pattern segments is not electrically connected to the boss, it is determined that the first printed pattern and the boss overlap, the first portion of the plurality of pattern segments overlaps the boss, and the second portion of the plurality of pattern segments does not overlap the boss, and the deviation directions of the projections of the plurality of corresponding cavity ports and feeding ports on the target plane are located in directions corresponding to the portions of the plurality of pattern segments.

[0298] As shown in FIG. 17( b ), if the detection unit in the detection system detects the antenna boss and the pattern M A 、Graphics M r1-x1 、Graphics M r1-y2 and M r1-x2 At the same time, it is determined that the deviation of the feeding port and the air cavity port in the positive direction of y on the xy plane is greater than or equal to dr1+r1. For example, assuming that the detection system is a voltage / current detection system as shown in Figure 11, if the graph M A 、Graphics M r1-x1 、Graphics M r1-y2 and M r1-x2 The corresponding detection results indicate the graph M A 、Graphics M r1-x1 、Graphics M r1-y2 and M r1-x2 If the voltage is low or current flows, the boss and the graph M are determined. A 、Graphics M r1-x1 、Graphics M r1-y2 and M r1-x2 At the same time overlap.

[0299] If the detection unit in the detection system detects the antenna protrusion and the pattern M A、Graphics M r1-x1 and Graphics M r1-y2 At the same time, it is determined that the deviation of the feeding port and the air cavity port in the positive direction of y and the negative direction of x on the xy plane is greater than or equal to dr1. For example, assuming that the detection system is a voltage / current detection system as shown in Figure 11, if the graph M A 、Graphics M r1-x1 and Graphics M r1-y2 The corresponding detection results indicate the graph M A 、Graphics M r1-x1 and Graphics M r1-y2 If the voltage is low or current flows, the boss and the graph M are determined. A 、Graphics M r1-x1 and Graphics M r1-y2 It should be understood that FIG17(a) only shows the situation where three graphics are overlapped.

[0300] It should be understood that the printed pattern can be any one of the printed patterns in FIG. 15 , and the embodiment of the present application does not limit this.

[0301] Optionally, in S1603 , the port electrical parameters corresponding to the positional relationship are determined according to the mapping relationship and the positional relationship between the cavity port and the feeding port, where the mapping relationship indicates the relationship between the port electrical parameters and the positional relationship between the cavity port and the feeding port.

[0302] It should be understood that the port electrical parameters include loss, delay, phase, isolation, etc. between the feeding port and the cavity port.

[0303] Specifically, according to the positional relationship between the feeding port and the air cavity port, the port electrical parameters corresponding to the positional relationship are determined from the mapping relationship, and the interconnection state of the feeding port and the air cavity port is determined according to the port electrical parameters and the preset electrical parameters.

[0304] The mapping relationship between the position deviation and the port can be represented by a function relationship diagram or a table, and the embodiment of the present application does not limit the specific form of the mapping relationship.

[0305] For example, FIG18 is a schematic diagram of a mapping relationship between the distance and loss between a feed port and an air cavity port provided in an embodiment of the present application. If the deviation distance between the feed port and the air cavity port is between d0 and d1, the port loss of the feed port and the air cavity port is less than 0.7 dB. As shown in FIG18 , since the value of the port loss shown in FIG18 is a negative value, the deviation distance between the ports and the loss between the ports are positively correlated, that is, the greater the deviation distance between the ports, the greater the loss between the ports.

[0306] Optionally, S1604 , determining whether the cavity port and the feeding port are well connected based on the port electrical parameters and preset electrical parameters.

[0307] In certain implementations, if the port electrical parameter is less than a preset electrical parameter, the interconnection between the feed port and the air cavity port is determined to be good; if the port electrical parameter is greater than the preset electrical parameter, the interconnection between the feed port and the air cavity port is determined to be poor. If the port electrical parameter is equal to the preset electrical parameter, the interconnection between the feed port and the air cavity port can be determined to be good, or poor. This embodiment of the present application is not limited to this.

[0308] Optionally, S1605 , status information is sent, where the status information is used to indicate whether the connection status between the cavity port and the feeding port is good.

[0309] Optionally, S1606 , status information is recorded, where the status information is used to indicate whether the connection status between the cavity port and the feeding port is good.

[0310] 19 and 20 , a connection structure between an air cavity antenna and a printed circuit board and a corresponding detection method will be described in detail below.

[0311] FIG19 is a schematic structural diagram of an air cavity antenna and a printed circuit board provided in an embodiment of the present application.

[0312] FIG19(a) shows the surface T of the printed circuit board, which may include printed graphics M, printed graphics S1, printed graphics S2, printed graphics S3, and printed graphics S4 (hereinafter referred to as "printed graphics S1 to printed graphics S4"). Among them, the printed graphics M may include printed graphics M A , printed pattern M1, printed pattern M2, printed pattern M3 and printed pattern M4 (hereinafter referred to as "printed pattern M1 to printed pattern M4"). The printed board may further include positioning holes P1 and positioning holes P2.

[0313] The enlarged partial schematic diagram corresponding to the printed pattern M is shown in FIG19(a). The specific method for determining the printed pattern M can be referred to the description in FIG15(e) and will not be repeated here. It should be understood that the printed pattern M can be any of the methods described in FIG15.

[0314] FIG19( b ) shows the antenna B surface, which specifically includes the boss T A , boss T1, boss T2, boss T3 and boss T4.

[0315] As a possible implementation method, boss T1, boss T2, boss T3 and boss T4 (hereinafter referred to as "boss T1 to boss T4") and printed graphics M1, printed graphics M2, printed graphics M3 and printed graphics M4 (hereinafter referred to as "printed graphics M1 to printed graphics M4") can be located at the assembly position of the air cavity antenna and the printed circuit board.

[0316] For example, as shown in Figure 19(c), bosses T1 through T4 can be screwed through and assembled with printed patterns S1 through S4, respectively. It should be understood that there are many ways to assemble the air cavity antenna and the printed circuit board, and Figure 19 is merely an example.

[0317] Among them, the bosses T1 to T4 are hollow circular cylinders, and the bosses T1 to T4 are hollow circular rings.

[0318] For example, the boss T A The projection graph on the xy plane can be compared with the printed graph M A Similarly, the projection patterns of bosses T1 to T4 on the xy plane are not smaller than the printed patterns S1 to S4. As shown in FIG19(c), M A With T A The positions of the printed patterns S1 to S4 correspond to the positions of the bosses T1 to T4 respectively.

[0319] For example, the boss T A The height of the boss TA can be greater than the height of the boss T1 to the boss T4, and the heights of the boss T1 to the boss T4 are the same. The height of the boss TA is H A , the height of boss T1 to boss T4 is H T . Printing Graphics M A The gap distance between the printed patterns M1 to M4 is dr1. The relative position relationship between the printed patterns M1 to M4 can be referred to formula (2).

[0320] The surface of the air cavity antenna is a good electrical conductor, and the assembly screws Z1 to Z4 assemble the antenna and the printed circuit board to the outer shell. A With printed graphics M A Good overlap, bosses T1 to boss T4 are likely to overlap with printed graphics S1 to printed graphics S4 respectively, the grounding screw Z5 is a conductive screw, connecting the outer surface of the antenna with the grounding surface of the printed circuit board, the antenna positioning pins (for example, the positioning pins X1 and X2 shown in (b) of Figure 19) and the printed circuit board positioning holes (for example, the positioning holes P1 and P2 shown in (a) of Figure 19)) can control the distance deviation range between the feeding port and the air cavity port in the xy direction.

[0321] Figure 20 is a schematic diagram of a current / voltage detection system corresponding to the structure shown in Figure 19 provided by an embodiment of the present application. It should be understood that the detection system of Figure 20 can specifically refer to the detection system shown in Figure 11.

[0322] As shown in FIG20 , the current / voltage detection system may be a multi-channel current / voltage detection system, and the ground terminal of the current / voltage detection system is connected to the printed circuit board grounding pattern G. Printed pattern M A , printed patterns M1 to printed patterns M4 and printed patterns S1 to printed patterns S4 are respectively connected to the current / voltage detection ports of the current / voltage detection system.

[0323] It should be understood that Figure 20 is only an example of a detection system; the detection system shown in Figures 12 or 13 could also be used. If the detection system shown in Figures 12 or 13 is used, a printed ground plane G is not required on the printed circuit board (that is, the printed circuit board and antenna are well grounded to each other), and the detection system is not connected to the printed circuit board ground plane G. This situation will be explained in detail in Figure 24 below.

[0324] The detection results of different current / power detection systems may include the following situations.

[0325] Case 1: If the current / voltage detection system determines that only the pattern M is printed A and boss T A For overlap, the possible situation is: in the ideal assembly, the printed circuit board T surface is completely parallel to the antenna B surface, and there is no deviation between the feed port and the air cavity port in the xy plane. In this case, the distance between the feed port and the air cavity port in the z direction is H A , the distance deviation on the xy plane is 0.

[0326] Case 2: If the current / voltage detection system determines that only the pattern M is printed A and boss T A Overlapping may occur in non-ideal assembly situations where the printed circuit board's T-surface is not parallel to the antenna's B-surface, and there is also a misalignment between the feed port and the air cavity port in the xy plane. In this case, the distance between the feed port and the air cavity port in the z direction is less than Hz, and the distance misalignment in the xy plane is less than dr1. The calculation formula for Hz refers to Formula (1).

[0327] Case 3: If the current / voltage detection system determines that the boss T A With printed graphics M AOverlapping, one or more of the bosses T1 to T4 overlap with one or more of the printed patterns S1 to S4. The possible situation is: in the case of non-ideal assembly, the printed board T surface is not parallel to the antenna B surface, and there is also a deviation between the feed port and the air cavity port in the xy plane. In this case, the distance between the feed port and the air cavity port in the z direction is within the range of H z1 and H z6 The distance deviation between them on the xy plane is less than dr1.

[0328] Case 4: If the current / voltage detection system determines that the boss T A With printed graphics M A Overlapping, and also overlapping with one or more of the printed patterns M1 to M4, the possible situation is: in the case of non-ideal assembly, the printed circuit board T surface is not parallel to the antenna B surface, and there is also a deviation between the feed port and the air cavity port in the xy plane. In this case, the distance between the antenna feed port and the printed circuit board air cavity port in the z direction is within the range of H z1 and H z6 The distance deviation on the xy plane is greater than or equal to dr1. A , the relative position of one or more of the printed patterns M1 to M4, and determine the direction area of ​​the offset in the x and y directions. A and printed pattern M4, the feed port and the air cavity port are offset in the x direction or close to the x direction. A , printed pattern M3 and printed pattern M4, there is an offset between the feeding port and the air cavity port in the 45° direction or the direction close to 45° in x and y.

[0329] Case 5: If the current / voltage detection system determines that the boss T A With printed graphics M A Overlap, one or more of the bosses T1 to T4 overlap with one or more of the printed patterns S1 to S4, and also overlap with one or more of the printed patterns M1 to M4. The possible situation is: in the case of non-ideal assembly, the printed board T surface is not parallel to the antenna B surface, and there is also a deviation between the feed port and the air cavity port in the xy plane. In this case, the distance between the feed port and the air cavity port in the z direction is within the range of H z1 and H z6 The distance deviation on the xy plane is greater than or equal to dr1. A, the relative position of one or more of the printed patterns M1 to M4, and the direction area of ​​the deviation in the x and y directions.

[0330] Case 6: If the current / voltage detection system determines that the boss T A With printed graphics M A If there is no overlap, the possible reasons are: non-ideal assembly, system abnormality, and the air cavity antenna and printed circuit board are not connected.

[0331] 21 , another connection structure between an air cavity antenna and a printed circuit board and a corresponding detection method will be described in detail below.

[0332] FIG21 is a schematic structural diagram of another air cavity antenna and printed circuit board provided in an embodiment of the present application.

[0333] FIG21 (a) shows the printed circuit board T surface, which may include printed graphics M, printed graphics S1 to printed graphics S4. Among them, the printed graphics M may include printed graphics M A , printed graphics M1 to printed graphics M4. The printed board may further include positioning holes P1 and positioning holes P2.

[0334] The enlarged schematic diagram of the printed pattern M is shown in FIG21(a). A The other half of the semicircle can be the ground plane G. It should be understood that the printed pattern M can be any of the methods described in the relevant description of Figure 15. In the relevant description of Figure 15, part of the printed pattern can also be used as the ground plane G.

[0335] In this way, the printed pattern design area of ​​the T-side of the printed circuit board can be saved, and accordingly, there is no need to design a separate grounding screw on the air cavity antenna side, which can save costs.

[0336] FIG21( b ) shows the antenna B surface, which specifically includes the boss T A and boss T1 to boss T4.

[0337] As a possible implementation, the bosses T1 to T4 and the printed patterns M1 to M4 may be decoupled from the assembly position of the air cavity antenna and the printed circuit board.

[0338] For example, as shown in Figure 21(c), bosses T1-T4 can be arranged corresponding to printed patterns S1-S4. The mounting holes for the air cavity antenna and printed circuit board can be arranged independently. It should be understood that there are many ways to assemble the air cavity antenna and printed circuit board, and the screw assembly shown in Figure 21 is merely an example.

[0339] It should be understood that the description of the positioning holes and positioning pins in (a), (b) and (c) of Figure 21 can refer to the relevant description of (a), (b) and (c) of Figure 19, and will not be repeated here.

[0340] It should be understood that the current / voltage detection system corresponding to the structure shown in FIG21 is similar to the current / voltage detection system corresponding to the structure shown in FIG19 . For a detailed description, please refer to the relevant part of FIG20 , which will not be repeated here.

[0341] It should also be understood that several situations of the detection method corresponding to the structure of Figure 21 are similar to those of Figure 19 and will not be repeated here.

[0342] 22 and 23 , another connection structure between an air cavity antenna and a printed circuit board and a corresponding detection method will be described in detail below.

[0343] FIG22 is a schematic structural diagram of another air cavity antenna and printed circuit board provided in an embodiment of the present application.

[0344] FIG22(a) shows the printed circuit board T surface, which may include a printed pattern M A , and printed graphics S1 to printed graphics S4. Among them, printed graphics M A , and the printed patterns S1 to S4 are located in the middle of the air cavity port.

[0345] Among them, the printed graphics M A , and the corresponding partial enlarged schematic diagrams of printed patterns S1 to S4 are shown in Figure 22(a). In other words, the printed pattern shown in Figure 22(a) is a simplification of the printed pattern shown in Figure 19(a). That is, the printed pattern is concentrated in the middle of the air cavity port.

[0346] FIG22( b ) shows the antenna B surface, which includes a boss T A And boss T1 to boss T4. Among them, the height of boss T1 to boss T4 can be lower than that of boss T A , and the heights of bosses T1 to T4 are equal. A And boss T1 to boss T4. It is in a stepped shape. Specifically, as shown in FIG22(c), boss T A The diameter is D A , height H A ; The diameter formed by boss T1 ~ boss T4 can be D T , height H T . H A Greater than H T .

[0347] Figure 23 is a schematic diagram of a current / voltage detection system corresponding to the structure shown in Figure 22 according to an embodiment of the present application. It should be understood that the detection system of Figure 23 can specifically refer to the detection system shown in Figure 11.

[0348] As shown in FIG23 , the current / voltage detection system may be a multi-channel current / voltage detection system, and the ground terminal of the current / voltage detection system is connected to the printed circuit board grounding pattern G. Printed pattern M A The printed patterns S1 to S4 are respectively connected to the current / voltage detection ports of the current / voltage detection system.

[0349] The detection results of different current / power detection systems may include the following situations.

[0350] Case 1: If the current / voltage detection system determines that only the pattern M is printed A and boss T A Overlapping, the possible situation is: in the ideal assembly, the printed circuit board T surface is completely parallel to the antenna B surface, and there is no deviation between the feed port and the air cavity port in the xy plane. In this case, the distance between the air cavity port and the feed port in the z direction is H A , the distance deviation of the projection on the xy plane is 0.

[0351] Case 2: If the current / voltage detection system determines that only the pattern M is printed A and boss T A Overlap, the possible situation is: in the case of non-ideal assembly, the PCB T surface is not parallel to the antenna B surface, and there is also a deviation between the antenna B surface and the PCB T surface in the xy plane. In this case, the distance between the air cavity port and the feed port in the z direction is less than H A , the distance deviation of the projection on the xy plane is less than dr1.

[0352] Case 3: If the current / voltage detection system determines that the boss T A With printed graphics M A Overlapping: One or more of the bosses T1 to T4 overlap with one or more of the printed patterns S1 to S4. This may occur in the following situations: Under non-ideal assembly conditions, the printed circuit board T surface is not parallel to the antenna B surface, and there is also a deviation between the feed port and the air cavity port in the xy plane. In this case, the distance between the air cavity port and the feed port in the z direction ranges between H1 and H6, and the distance deviation projected on the xy plane is less than dr1. Where H n The value of satisfies formula (3), n = 1, 2, 3, 4, 5, 6. It should be understood that the value range of n here is related to the number of ports.

[0353] Among them, d n Indicates the distance from the nth port to the center.

[0354] Case 4: If the current / voltage detection system determines that the boss T A With printed graphics M A If there is no overlap, the possible reasons are: non-ideal assembly, system abnormality, and the air cavity antenna and printed circuit board are not connected.

[0355] 24 , another connection structure between an air cavity antenna and a printed circuit board and a corresponding detection method will be described in detail below.

[0356] FIG24 is a schematic structural diagram of another air cavity antenna and printed circuit board provided in an embodiment of the present application.

[0357] Figure 24(a) shows the printed circuit board T surface, the overall structure of which is similar to that of Figure 19(a). The specific shape of the printed pattern S0 can be any of the shapes described in Figure 15. Figure 24(b) shows the antenna B surface, the overall structure of which is similar to that of Figure 19(b).

[0358] The main difference between Figure 19 and Figure 24 is that the printed circuit board T in Figure 24 (a) does not need to have a printed ground plane G. Accordingly, the antenna B in Figure 24 (b) does not need to have a reserved ground hole H. Furthermore, as shown in Figure 24 (c), the ground screw Z5 is not required.

[0359] It should be understood that the detection system of Figure 23 can specifically refer to the detection system shown in Figures 12 or 13. Printed pattern S0 and printed patterns S1 through S4 are each connected to MCU_Ion of the current / voltage detection system shown in Figure 12. Alternatively, printed pattern S0 and printed patterns S1 through S4 are each connected to ADCn of the current / voltage detection system shown in Figure 13.

[0360] It should be understood that the mating position of the printed pattern and boss shown in Figure 19 coincides with the screw installation position, while the mating position of the printed pattern and boss shown in Figure 21 is decoupled from the screw installation position. For different printed patterns, bosses, and whether or not a ground plane G is required, the embodiments of this application do not restrict whether the mating position and installation position are decoupled.

[0361] It should also be understood that the solution requiring a ground plane G can be implemented by the detection system shown in FIG. 11 , and the solution not requiring a ground plane can be implemented by the detection system shown in FIG. 12 or FIG. 13 .

[0362] The above describes the radar and the detection method in detail in conjunction with Figures 4 to 24. It can be understood that in order to achieve the above functions, it includes hardware structures and / or software modules corresponding to executing each function.

[0363] Those skilled in the art should be aware that, in combination with the units and algorithm steps of each example described in the embodiments disclosed herein, the present application can be implemented in the form of hardware or a combination of hardware and computer software. Whether a function is performed in the form of hardware or computer software driving hardware depends on the specific application and design constraints of the technical solution. Professional and technical personnel can use different methods to implement the described functions for specific applications, but such implementation should not be considered to be beyond the scope of this application.

[0364] The detection device provided in the embodiments of the present application is described in detail below with reference to Figures 25 to 27. It should be understood that the description of the device embodiment corresponds to the description of the method embodiment. Therefore, for matters not described in detail, reference can be made to the method embodiment above. For the sake of brevity, some contents are not repeated here.

[0365] Figure 25 is a schematic diagram of a detection device provided by an embodiment of the present application. The device may include a processing unit 2520, which is used to perform data processing. Optionally, the device may also include a transceiver unit 2510, which may implement corresponding communication functions. The transceiver unit 2510 may also be referred to as a communication interface or a communication unit or an interface unit. It should be understood that for the operations such as sending and receiving involved in this application, if there is no special explanation, or if it does not conflict with its actual function or internal logic in the relevant description, it can be more generally understood as operations such as output and input, rather than sending and receiving operations directly performed by the radio frequency circuit and antenna.

[0366] Optionally, the device may further include a storage unit, which may be used to store instructions and / or data. The processing unit 2520 may read the instructions and / or data in the storage unit so that the device implements the aforementioned method embodiment.

[0367] The device can be used to perform the actions in the above method embodiments, the transceiver unit 2510 is used to perform the acquisition-related operations in the above method embodiments, and the processing unit 2520 is used to perform the processing-related operations in the above method embodiments.

[0368] As a design, the device is used to perform the actions of the method embodiment shown in Figure 16 above. The execution subject can be a chip, chip system or processor that supports the detection device to implement the corresponding method, or it can be a logic module or software that can implement all or part of the functions of the detection device.

[0369] Specifically, the transceiver unit 2510 is used to obtain the electrical connection status between the detection point and the boss. The processing unit 2520 is used to determine the positional relationship between the cavity port and the feeding port based on the electrical connection status between the detection point and the boss.

[0370] For details not described in detail, please refer to the above method embodiment.

[0371] It should be understood that the specific process of each unit executing the above corresponding steps has been described in detail in the above method embodiment, and for the sake of brevity, it will not be repeated here.

[0372] The processing unit 2520 in the above embodiment can be implemented by at least one processor or processor-related circuit. The transceiver unit 2510 can be implemented by a transceiver or transceiver-related circuit. The storage unit can be implemented by at least one memory.

[0373] Figure 26 is a schematic structural diagram of a detection device provided in an embodiment of the present application.

[0374] As shown in FIG26 , an embodiment of the present application further provides a detection device. The device includes a processor 2610. Optionally, the device also includes a memory 2620. The processor 2610 is coupled to the memory 2620. The memory 2620 is configured to store computer programs, instructions, and / or data. The processor 2610 is configured to execute the computer programs, instructions, and / or data stored in the memory 2620, thereby executing the method described in the above method embodiment.

[0375] Optionally, the device includes one or more processors 2610.

[0376] Optionally, as shown in FIG26 , the device 2600 may further include a memory 2620 .

[0377] Optionally, the device may include one or more memories 2620.

[0378] Optionally, the memory 2620 may be integrated with the processor 2610 or provided separately.

[0379] Optionally, as shown in Figure 26, the device may further include a transceiver 2630, which is used to receive and / or send signals. For example, the processor 2610 is used to control the transceiver 2630 to receive and / or send signals.

[0380] As a solution, the device is used to implement the operations performed by the detection device in the above method embodiment.

[0381] For example, the processor 2610 is used to implement the processing-related operations performed by the detection device in the above method embodiment, and the transceiver 2630 is used to implement the sending and receiving-related operations performed by the detection device in the above method embodiment.

[0382] Figure 27 is a schematic diagram of a chip system provided by an embodiment of the present application, as shown in Figure 27. The chip system (or it can also be called a processing system) includes a logic circuit 2710 and an input / output interface (input / output interface) 2720. The logic circuit is used to couple with the input interface and transmit data parameters through the input / output interface to execute the method in the above method embodiment. The device installed with the chip system can implement the method and function of the embodiment of the present application. For example, the logic circuit 2710 can be a processing circuit in the chip system to realize the control of the device installed with the chip system, and can also be coupled to a storage unit to call the instructions in the storage unit so that the device can implement the method and function of the embodiment of the present application. The input / output interface 2720 can be an input and output circuit in the chip system to output the information processed by the chip system, or input the data or signaling information to be processed into the chip system for processing.

[0383] As a solution, the chip system is used to implement the operations performed by the detection device in the above method embodiment.

[0384] For example, the logic circuit 2710 is used to implement the processing-related operations in the above method embodiments, and the input / output interface 2720 is used to implement the acquisition-related operations in the above method embodiments.

[0385] An embodiment of the present application further provides a computer-readable storage medium storing computer instructions for implementing the method executed by the detection device in the above method embodiment.

[0386] For example, when the computer program is executed by a computer, the computer can implement the method performed by the detection device in the above method embodiment.

[0387] An embodiment of the present application further provides a computer program product comprising instructions, which, when executed by a computer, enables the computer to implement the method performed by the detection device in the above method embodiment.

[0388] An embodiment of the present application further provides a mobile carrier, which may include the above-mentioned radar, and the radar includes a detection device; or the mobile carrier includes the above-mentioned radar and the detection device.

[0389] Optionally, the mobile carrier may be a vehicle.

[0390] The explanation of the relevant contents and beneficial effects of any of the above-mentioned devices can be referred to the corresponding method embodiments provided above, which will not be repeated here.

[0391] It should be understood that the processor mentioned in the embodiments of the present application may be a central processing unit (CPU), or may be other general-purpose processors, digital signal processors (DSP), application-specific integrated circuits (ASIC), field programmable gate arrays (FPGA) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. The general-purpose processor may be a microprocessor or any conventional processor, etc.

[0392] It should also be understood that the memory mentioned in the embodiments of the present application may be a volatile memory and / or a non-volatile memory. Among them, the non-volatile memory may be a read-only memory (ROM), a programmable read-only memory (PROM), an erasable programmable read-only memory (EPROM), an electrically erasable programmable read-only memory (EEPROM), or a flash memory. The volatile memory may be a random access memory (RAM). For example, RAM can be used as an external cache. By way of example and not limitation, RAM may include the following forms: static random access memory (SRAM), dynamic random access memory (DRAM), synchronous dynamic random access memory (SDRAM), double data rate synchronous dynamic random access memory (DDR SDRAM), enhanced synchronous dynamic random access memory (ESDRAM), synchronous link dynamic random access memory (SLDRAM), and direct rambus RAM (DR RAM).

[0393] It should be noted that when the processor is a general-purpose processor, DSP, ASIC, FPGA or other programmable logic device, discrete gate or transistor logic device, discrete hardware component, the memory (storage module) can be integrated into the processor.

[0394] It should also be noted that the memory described herein is intended to include, but is not limited to, these and any other suitable types of memory.

[0395] Those skilled in the art will appreciate that the units and algorithm steps of each example described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are performed in hardware or software depends on the specific application and design constraints of the technical solution. Professional and technical personnel can use different methods to implement the described functions for each specific application, but such implementation should not be considered beyond the scope of this application.

[0396] Those skilled in the art will clearly understand that, for the convenience and brevity of description, the specific working processes of the systems, devices and units described above can refer to the corresponding processes in the aforementioned method embodiments and will not be repeated here.

[0397] In the several embodiments provided in this application, it should be understood that the disclosed systems, devices and methods can be implemented in other ways. For example, the device embodiments described above are merely schematic. For example, the division of the units is merely a logical function division. In actual implementation, there may be other division methods, such as multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be through some interfaces, indirect coupling or communication connection of devices or units, which can be electrical, mechanical or other forms.

[0398] The units described as separate components may or may not be physically separate, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed across multiple network units. Some or all of these units may be selected to achieve the purpose of this embodiment according to actual needs.

[0399] In addition, each functional unit in each embodiment of the present application may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.

[0400] If the functions are implemented in the form of software functional units and sold or used as independent products, they can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present application, or the part that contributes to the prior art, or the part of the technical solution, can be embodied in the form of a software product. The computer software product is stored in a storage medium and includes several instructions for enabling a computer device (which can be a personal computer, server, or network device, etc.) to execute all or part of the steps of the method described in each embodiment of the present application. The aforementioned storage medium includes various media that can store program codes, such as a USB flash drive, a mobile hard disk, a read-only memory ROM, a random access memory RAM, a magnetic disk, or an optical disk.

[0401] The above description is merely a specific embodiment of the present application, but the scope of protection of the present application is not limited thereto. Any changes or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in this application should be included in the scope of protection of this application. Therefore, the scope of protection of this application should be based on the scope of protection of the claims.

Claims

1. A radar, characterized in that: The radar includes a cavity antenna, a circuit board, and a chip. The cavity antenna, the circuit board, and the chip are assembled in a first direction. The first side of the circuit board is assembled correspondingly to the second side of the cavity antenna, and the second side of the circuit board is assembled correspondingly to the chip. The circuit board includes a cavity port and a detection point provided on a first surface of the circuit board, the cavity antenna includes a feeding port and a boss provided on a second surface of the cavity antenna, and the detection point and the boss are conductive; The electrical connection state between the detection point and the boss is used to determine the positional relationship between the cavity port and the feeding port.

2. The radar according to claim 1, characterized in that The electrical connection state between the detection point and the boss is specifically used to determine the overlap between the detection point and the boss; The overlap between the detection point and the boss is used to determine the positional relationship between the cavity port and the feeding port.

3. The radar according to claim 2, characterized in that When the detection point and the boss are electrically connected, there is an overlap between the detection point and the boss; or, When the detection point and the boss are not electrically connected, there is no overlap between the detection point and the boss.

4. The radar according to claim 3, characterized in that When there is an overlap between the detection point and the boss, the corresponding detection circuit between the detection point and the boss is turned on; or, When there is no overlap between the detection point and the boss, the corresponding detection circuit between the detection point and the boss is disconnected.

5. The radar according to any one of claims 1 to 4, characterized in that: When the number of the cavity ports is multiple, The detection point is located at a middle position of the plurality of cavity ports, and / or the detection point is located at a peripheral position of the plurality of cavity ports; When there are multiple feeding ports, The boss is located in the middle of the plurality of feeding ports, and / or the boss is located around the plurality of feeding ports.

6. The radar according to claim 5, characterized in that The electrical connection state between the detection point and the boss is specifically used to determine the overlap between the detection point and the boss, and to obtain the distances between a plurality of corresponding cavity ports and feeding ports in the first direction.

7. The radar according to claim 6, characterized in that The detection point is located in the middle of the plurality of cavity ports. When the detection point and the corresponding boss are electrically connected, there is an overlap between the detection point and the boss, and the distance between the multiple corresponding cavity ports and the feeding port in the first direction is less than or equal to the height of the boss; or When the detection point and the corresponding boss are not electrically connected, there is no overlap between the detection point and the boss, and the distance between the multiple corresponding cavity ports and feeding ports in the first direction is greater than the height of the boss.

8. The radar according to claim 6, characterized in that When there are multiple bosses, the first boss located in the middle of the multiple feeding ports has the highest height.

9. The radar according to claim 8, characterized in that The first detection point is located in the middle of the plurality of cavity ports, and the second detection point is located around the plurality of cavity ports. When the first detection point is electrically connected to the first boss, and the second detection point is not electrically connected to the corresponding second boss, the first detection point and the first boss are overlapped, and the second detection point and the second boss are not overlapped, and the distances between the plurality of corresponding cavity ports and the feeding port in the first direction are within a preset range, and the preset range is related to the height of the first boss; or, When the first detection point is electrically connected to the first boss, and the second detection point is electrically connected to the corresponding second boss, there is overlap between the first detection point and the first boss, and there is overlap between the second detection point and the second boss. Based on the height of the first boss and the height of the second boss, the distance between the multiple corresponding cavity ports and the feeding ports in the first direction is obtained.

10. The radar according to any one of claims 5 to 9, characterized in that The electrical connection status between the detection point and the boss is specifically used to determine the overlap between the detection point and the boss, and obtain the deviation distance of the multiple corresponding cavity ports and feeding ports projected on the target plane, where the target plane is perpendicular to the first direction.

11. The radar according to claim 10, characterized in that The detection point includes a first printed pattern and a second printed pattern, the second printed pattern surrounds the first printed pattern, and the distance between the second printed pattern and the first printed pattern is a first distance; When the first printed pattern is electrically connected to the boss and the second printed pattern is not electrically connected to the boss, the first printed pattern and the boss are overlapped and the second printed pattern and the boss are not overlapped, and the deviation distance between the projections of the plurality of corresponding cavity ports and feeding ports on the target plane is less than the first distance; or When the first printed pattern is electrically connected to the boss and the second printed pattern is electrically connected to the boss, there is overlap between the first printed pattern and the boss, and there is no overlap between the second printed pattern and the boss, and the deviation distance between the multiple corresponding cavity ports and feeding ports projected on the target plane is greater than or equal to the first distance.

12. The radar according to claim 11, characterized in that The first printed pattern is a circle, the second printed pattern is a ring, the circle and the ring are concentrically arranged, and the difference between the inner diameter of the ring and the diameter of the circle is twice the first distance.

13. The radar according to any one of claims 10 to 12, characterized in that: The electrical connection state between the detection point and the boss is specifically used to determine the overlap between the detection point and the boss, and to obtain the deviation direction of the projections of the multiple corresponding cavity ports and feeding ports on the target plane.

14. The radar according to claim 13, characterized in that The detection point includes a first printed pattern and a second printed pattern, wherein the second printed pattern surrounds the first printed pattern, and the second printed pattern includes a plurality of pattern segments; When the first printed graphic is electrically connected to the boss, the first part of the multiple graphic segments is electrically connected to the boss, and the second part of the multiple graphic segments is not electrically connected to the boss, the first printed graphic and the boss are overlapped, the first part of the multiple graphic segments and the boss are overlapped, the second part of the multiple graphic segments and the boss are not overlapped, and the deviation directions of the multiple corresponding cavity ports and feeding ports projected on the target plane are located in directions corresponding to some of the multiple graphic segments.

15. The radar according to claim 14, characterized in that The first printed graphic is a circle, the multiple graphic segments are multiple arc segments, the multiple arc segments have the same corresponding radius, and are all concentrically arranged around the circle.

16. A detection method, characterized in that: The detection method is applied to a radar, which includes a cavity antenna, a circuit board, and a chip. The cavity antenna, the circuit board, and the chip are assembled in a first direction, with the first surface of the circuit board corresponding to the second surface of the cavity antenna, and the second surface of the circuit board corresponding to the chip. The circuit board includes a cavity port and a detection point provided on a first surface of the circuit board, the cavity antenna includes a feeding port and a boss provided on a second surface of the cavity antenna, and the detection point and the boss are conductive; The method comprises: Acquiring an electrical connection state between the detection point and the boss; The positional relationship between the cavity port and the feeding port is determined according to the electrical connection state between the detection point and the boss.

17. The method according to claim 16, characterized in that The determining the positional relationship between the cavity port and the feeding port according to the electrical connection state between the detection point and the boss includes: determining a connection between the detection point and the boss according to an electrical connection state between the detection point and the boss; The positional relationship between the cavity port and the feeding port is determined according to the overlap between the detection point and the boss.

18. The method according to claim 17, characterized in that The determining of the overlap between the detection point and the boss according to the electrical connection state between the detection point and the boss includes: When it is detected that the detection point and the boss are electrically connected, determining that there is an overlap between the detection point and the boss; or, When it is detected that there is no electrical connection between the detection point and the boss, it is determined that there is no overlap between the detection point and the boss.

19. The method according to claim 18, characterized in that When there is an overlap between the detection point and the boss, the corresponding detection circuit between the detection point and the boss is turned on; or, When there is no overlap between the detection point and the boss, the corresponding detection circuit between the detection point and the boss is disconnected.

20. The method according to any one of claims 16 to 19, characterized in that When the number of the cavity ports is multiple, The detection point is located at a middle position of the plurality of cavity ports, and / or the detection point is located at a peripheral position of the plurality of cavity ports; When there are multiple feeding ports, The boss is located in the middle of the plurality of feeding ports, and / or the boss is located around the plurality of feeding ports.

21. The method according to claim 20, characterized in that The determining the positional relationship between the cavity port and the feeding port according to the electrical connection state between the detection point and the boss includes: According to the electrical connection state between the detection point and the boss, the overlap condition between the detection point and the boss is determined, and the distances between a plurality of corresponding cavity ports and feeding ports in the first direction are obtained.

22. The method according to claim 21, characterized in that The detection point is located in the middle of the plurality of cavity ports. The obtaining of distances between a plurality of corresponding cavity ports and feeding ports in the first direction includes: When it is detected that the detection point is electrically connected to the corresponding boss, determining that there is overlap between the detection point and the boss, obtaining the distance between the plurality of corresponding cavity ports and the feeding port in the first direction, the distance in the first direction being less than or equal to the height of the boss; or When it is detected that there is no electrical connection between the detection point and the corresponding boss, it is determined that there is no overlap between the detection point and the boss, and the distance between the multiple corresponding cavity ports and feeding ports in the first direction is obtained, and the distance in the first direction is greater than the height of the boss.

23. The method according to claim 22, characterized in that When there are multiple bosses, the first boss located in the middle of the multiple feeding ports has the highest height.

24. The method according to claim 23, wherein The first detection point is located in the middle of the plurality of cavity ports, and the second detection point is located around the plurality of cavity ports. The obtaining of distances between a plurality of corresponding cavity ports and feeding ports in the first direction includes: When it is detected that the first detection point is electrically connected to the first boss and the second detection point is not electrically connected to the corresponding second boss, it is determined that the first detection point and the first boss are overlapped and the second detection point and the second boss are not overlapped, and the distances between the multiple corresponding cavity ports and the feeding ports in the first direction are obtained, and the distances in the first direction are within a preset range, and the preset range is related to the height of the first boss; or When it is detected that the first detection point is electrically connected to the first boss, and the second detection point is electrically connected to the corresponding second boss, it is determined that the first detection point and the first boss are overlapped, and the second detection point and the second boss are overlapped; The distances between the plurality of corresponding cavity ports and feeding ports in the first direction are acquired according to the height of the first boss and the height of the second boss.

25. The method according to any one of claims 20 to 24, characterized in that The determining the positional relationship between the cavity port and the feeding port according to the electrical connection state between the detection point and the boss includes: According to the electrical connection status between the detection point and the boss, the overlap condition between the detection point and the boss is judged, and the deviation distance of the multiple corresponding cavity ports and feeding ports projected on the target plane is obtained, and the target plane is perpendicular to the first direction.

26. The method according to claim 25, characterized in that The detection point includes a first printed pattern and a second printed pattern, the second printed pattern surrounds the first printed pattern, and the distance between the second printed pattern and the first printed pattern is a first distance; The obtaining of deviation distances of projections of a plurality of corresponding cavity ports and feeding ports on a target plane includes: When detecting that the first printed pattern is electrically connected to the boss and the second printed pattern is not electrically connected to the boss, determining that the first printed pattern and the boss are overlapped and the second printed pattern and the boss are not overlapped, obtaining deviation distances of the projections of the plurality of corresponding cavity ports and feeding ports on the target plane, the deviation distance on the target plane being less than the first distance; or When it is detected that the first printed pattern is electrically connected to the boss and the second printed pattern is electrically connected to the boss, it is determined that the first printed pattern and the boss are overlapped and the second printed pattern and the boss are not overlapped, and the deviation distance of the multiple corresponding cavity ports and feeding ports projected on the target plane is obtained, and the deviation distance on the target plane is greater than or equal to the first distance.

27. The method according to claim 26, characterized in that The first printed pattern is a circle, the second printed pattern is a ring, the circle and the ring are concentrically arranged, and the difference between the inner diameter of the ring and the diameter of the circle is twice the first distance.

28. The method according to any one of claims 25 to 27, characterized in that The determining the positional relationship between the cavity port and the feeding port according to the electrical connection state between the detection point and the boss includes: According to the electrical connection state between the detection point and the boss, the overlap condition between the detection point and the boss is determined, and the deviation direction of the projection of the multiple corresponding cavity ports and feeding ports on the target plane is obtained.

29. The method according to claim 28, characterized in that The detection point includes a first printed pattern and a second printed pattern, wherein the second printed pattern surrounds the first printed pattern, and the second printed pattern includes a plurality of pattern segments; The obtaining of deviation directions of the projections of the plurality of corresponding cavity ports and feeding ports on the target plane includes: When it is detected that the first printed pattern is electrically connected to the boss, the first portion of the plurality of pattern segments is electrically connected to the boss, and the second portion of the plurality of pattern segments is not electrically connected to the boss, it is determined that the first printed pattern and the boss are overlapped, the first portion of the plurality of pattern segments is overlapped, and the second portion of the plurality of pattern segments is not overlapped. Determine that deviation directions of the projections of the plurality of corresponding cavity ports and feeding ports on the target plane are located in directions corresponding to portions of the plurality of graphic segments.

30. The method according to claim 29, wherein The first printed graphic is a circle, the multiple graphic segments are multiple arc segments, the multiple arc segments have the same corresponding radius, and are all concentrically arranged around the circle.

31. The method according to any one of claims 16 to 30, characterized in that The method further comprises: Determining, according to a mapping relationship and a positional relationship between the cavity port and the feeding port, a port electrical parameter corresponding to the positional relationship, wherein the mapping relationship is used to indicate a relationship between the port electrical parameter and the positional relationship between the cavity port and the feeding port; According to the port electrical parameters and the preset electrical parameters, it is determined whether the cavity port and the feeding port are well connected.

32. The method according to claim 31, characterized in that The method further comprises: Status information is sent, where the status information is used to indicate whether the connection status between the cavity port and the feeding port is good.

33. The method according to claim 31 or 32, characterized in that The method further comprises: Record status information, where the status information is used to indicate whether the connection status between the cavity port and the feeding port is good.

34. A detection device, characterized in that: Comprising means for performing the method as claimed in any one of claims 16 to 33.

35. A detection device, characterized in that: The apparatus comprises a processor coupled to a memory, the memory being used to store computer programs or instructions, and the processor being used to execute the computer programs or instructions in the memory, so that the apparatus performs the method according to any one of claims 16 to 33.

36. A computer-readable storage medium, characterized in that The computer-readable storage medium stores a computer program or instructions, which, when executed on a computer, causes the computer to perform the method according to any one of claims 16 to 33.

37. A chip, characterized in that: The chip is coupled to a memory and is configured to read and execute program instructions stored in the memory to implement the method according to any one of claims 16 to 33.

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