Detection method and apparatus, and related product

Abstract

A detection apparatus (310), relating to the technical field of communications. The detection apparatus is applied to a first vehicle (101) and comprises a first processing unit (301) and at least two antennas. The detection apparatus (310) processes signals received by some or all of the at least two antennas by means of the first processing unit (301), instead of configuring a plurality of processing units to respectively process signals received by the at least two antennas. On the one hand, the antennas have a simple structure, are not prone to damage, and can improve the reliability of the detection apparatus (310); on the other hand, processing units can be reduced, and the cost of the detection apparatus (310) can be reduced. In addition, due to the small volume of the antennas, the mounting positions of the antennas in the first vehicle (101) can be conveniently selected, thereby facilitating the mounting of the detection apparatus (310) in the first vehicle (101). The detection apparatus (310) has the characteristics of high reliability, low cost, a small size, easy mounting, etc. The present application further relates to a detection method and a related product.

Description

A detection method, device and related product

[0001] The present application claims priority to the Chinese patent application No. 202411329472.1, filed on September 23, 2024, and entitled "A detection method, device and related product", the whole content of which is incorporated herein by reference. TECHNICAL FIELD

[0002] The present application relates to the field of communication technology, in particular to a detection method, device and related product. BACKGROUND

[0003] A digital key is a kind of intelligent key system that uses digital technology and wireless communication technology to digitize traditional physical keys to realize the unlocking, locking, starting and other operations of specific devices, vehicles, houses and the like. It mainly uses smart phones, smart watches and other smart devices as carriers, and interacts with target devices through Bluetooth, near field communication (NFC), ultra-wideband (UWB) and other wireless communication technologies. For example, a car digital key can allow the car owner to control the unlocking, locking, starting and other operations of the vehicle through the mobile phone and other devices, and a home digital key can allow the resident to open the door through the mobile phone.

[0004] However, the prerequisite for the digital key to realize specific functions is that the target can perceive the digital key through wireless communication technology. Therefore, how to simply and effectively perceive the digital key is a problem that needs to be solved at present. SUMMARY

[0005] The present application provides a detection method, device and related product. The detection device provided by the present application directly connects multiple antennas and a processor, thereby improving the reliability of the detection device and reducing the cost of the detection device.

[0006] In a first aspect, the present application provides a detection device applied to a first vehicle, comprising a first processing unit and at least two antennas. The at least two antennas are arranged on the body of the first vehicle, and the first processing unit is connected with the at least two antennas respectively. Each of the at least two antennas is used for receiving a signal and outputting an electric signal, and the first processing unit is used for determining the positional relationship between a target and the first vehicle based on the first electric signal output by part or all of the at least two antennas.

[0007] In the present application, the first processing unit is connected with at least two antennas respectively, and the at least two antennas are arranged on the vehicle body of the first vehicle, so that the first processor can obtain signals from part or all of the at least two antennas, and determine the positional relationship between the target and the first vehicle based on the first electric signal output by part or all of the at least two antennas. The at least two antennas in the detection device can be arranged at different positions of the first vehicle to receive signals from different directions of the first vehicle, ensuring that the detection device can obtain signals from different directions of the first vehicle in time and avoiding signal omission. The detection device does not arrange multiple processing units to process the signals received by the at least two antennas, but uses the first processing unit to process the signals received by part or all of the at least two antennas. On the one hand, since the antenna structure is simple and not easy to be damaged, the reliability of the detection device can be improved. On the other hand, a large number of processing units can be saved, and the cost of the detection device can be reduced as much as possible. In addition, since the antenna has a small volume, it is convenient to select the installation position of the antenna on the first vehicle, thereby facilitating the installation of the detection device on the first vehicle. In summary, the detection device provided by the present application has the characteristics of high reliability, low cost, small size and easy installation.

[0008] Optionally, the target is, for example, a device installed with a digital key, such as a smart phone, a smart watch, a car key card, or a car key buckle, etc.

[0009] Optionally, the positional relationship between the target and the first vehicle includes the distance and the direction between the target and the first vehicle.

[0010] In a possible implementation, the positions of the at least two antennas on the first vehicle are determined by the vehicle model of the first vehicle.

[0011] The vehicle model of the first vehicle exemplarily includes a sedan, a sport utility vehicle (SUV), a multi-purpose vehicle (MPV), a sports car, a pickup truck, or a new energy vehicle, etc. Further, the sedan can also be classified into a micro sedan, a small sedan, a compact sedan, a medium-sized sedan, a large sedan, etc., the SUV can also be classified into a small SUV, a compact SUV, a medium-sized SUV, a medium-large SUV, a large SUV, etc., the MPV can also be classified into a compact MPV, a medium-sized MPV, a large MPV, etc., the sports car can also be classified into an entry-level sports car, a medium-level sports car, a super sports car, an ultimate sports car, etc., the pickup truck can also be classified into a small pickup truck, a medium-sized pickup truck, a large pickup truck, etc. In addition, the vehicle can also be classified according to the length, width and height of the vehicle.

[0012] In the above embodiment, the positions of the at least two antennas on the first vehicle are determined by the vehicle model of the first vehicle, so that the at least two antennas can be reasonably distributed according to the vehicle model of the first vehicle, and the at least two antennas can accurately and effectively receive signals to determine the positional relationship between the target and the first vehicle.

[0013] In another possible implementation, the at least two antennas include two antennas, and the two antennas are arranged on side doors of the first vehicle.

[0014] In the above embodiment, the two antennas are arranged on the side doors of the first vehicle, for example, the two antennas are arranged on the left side door and the right side door of the first vehicle respectively. Arranging the two antennas on the side doors of the first vehicle facilitates the at least two antennas to receive signals from both sides of the vehicle, and ensures that the target approaching / away from the first vehicle from any side of the vehicle can timely obtain signals of the target, thereby determining the positional relationship between the target and the first vehicle.

[0015] Optionally, in the case that the at least two antennas include two antennas, the two antennas can also be arranged on side windows of the first vehicle, for example, the two antennas are arranged on the quarter windows of the first vehicle respectively. For some vehicle models without side windows, the two antennas can also be arranged on the B-pillar of the first vehicle.

[0016] In another possible implementation, the at least two antennas include four antennas, and the four antennas are arranged on the front windshield, the left front quarter window, the right front quarter window and the rear windshield of the first vehicle respectively.

[0017] In the above embodiment, the four antennas are arranged on the front windshield, the left front quarter window, the right front quarter window and the rear windshield of the first vehicle respectively, so that the detection device can receive signals from around the first vehicle through the four antennas respectively, and ensures that the target approaching / away from the first vehicle from any direction of the vehicle can timely obtain signals of the target, thereby determining the positional relationship between the target and the first vehicle. In addition, arranging the four antennas on the respective glass of the first vehicle also facilitates receiving signals from inside the vehicle, thereby determining whether the target is located inside the first vehicle.

[0018] In another possible implementation, the at least two antennas further include a first antenna, and the first antenna is arranged on a roof of the first vehicle.

[0019] In the above embodiment, the first antenna is arranged on the roof of the first vehicle, which facilitates receiving signals from inside the vehicle, thereby determining whether the target is located inside the first vehicle.

[0020] Optionally, if the first vehicle includes a sunroof, the first antenna can also be arranged on the sunroof of the first vehicle.

[0021] In another possible implementation, the at least two antennas include five antennas, and the five antennas are respectively arranged at the left side of the front bumper, the right side of the front bumper, the left side of the rear bumper, the right side of the rear bumper and the roof of the first vehicle.

[0022] In the above implementation, the five antennas are respectively arranged at the left side of the front bumper, the right side of the front bumper, the left side of the rear bumper, the right side of the rear bumper and the roof of the first vehicle, so that the detection device can receive signals from the surroundings of the first vehicle through the five antennas, and ensure that the target can be timely acquired when approaching / leaving the first vehicle from any direction of the target, thereby determining the positional relationship between the target and the first vehicle. The antenna arranged on the roof of the first vehicle is used to receive signals from inside the first vehicle to determine whether the target is located inside the first vehicle.

[0023] In another possible implementation, the detection device further includes a switching unit, and the switching unit is configured to connect the first processing unit and the at least two antennas, and control the signal transmission of one or more antennas of the at least two antennas to be turned on or turned off.

[0024] In the above implementation, the switching unit is configured to connect the first processing unit and the at least two antennas, and control the signal transmission of one or more antennas of the at least two antennas to be turned on or turned off. For example, when the signal of the antenna is in the turned-on state, the first processing unit can receive the signal from the antenna. For another example, when the signal of the antenna is in the turned-off state, the first processing unit cannot receive the signal from the antenna. Therefore, the switching unit can control one or more antennas of the at least two antennas to receive signals and transmit the received signals to the first processing unit, thereby determining the positional relationship between the target and the first vehicle.

[0025] Optionally, when the switching unit controls the signal transmission of the plurality of antennas of the at least two antennas to be in the turned-on state, the first electrical signal received by the first processing unit includes the electrical signals output by the plurality of antennas, and it can also be understood that the first electrical signal is obtained by superimposing the electrical signals output by the plurality of antennas.

[0026] In another possible implementation, the at least two antennas are divided into a plurality of antenna combinations, and each antenna combination includes at least one antenna. The first processing unit is further configured to control the switching unit, so that the plurality of antenna combinations are connected to the first processing unit in a first order.

[0027] In the above embodiments, the division manner of dividing the at least two antennas into the plurality of antenna combinations is not limited in the application. For example, the at least two antennas can be divided according to the installation positions of the antennas, for example, a plurality of adjacent antennas can be divided into one antenna combination. One antenna or a plurality of antennas can be included in an antenna combination, for example, one antenna, two antennas or three antennas are included in an antenna combination. Different antenna combinations can also include different numbers of antennas, for example, a plurality of antenna combinations include a first antenna combination and a second antenna combination, wherein the first antenna combination includes two antennas and the second antenna combination includes three antennas. The first order can be preset or customized, and the application is not limited in this regard. In the above embodiments, the at least two antennas are divided into a plurality of antenna combinations, and the plurality of antenna combinations are controlled to be connected to the first processing unit in the first order, so that the connection relationship between the first processing unit and the antennas has high degree of freedom, which can adapt to the needs of various vehicle models or various scenes, thereby improving the practicability and reliability of the detection device.

[0028] In another possible implementation, the detection device further includes at least one second processing unit and an antenna connected to the second processing unit. The antenna connected to the second processing unit is configured to receive a signal and output a second electric signal, and the second processing unit is configured to determine a first distance between the antenna connected to the second processing unit and the target based on the second electric signal. The first processing unit is further configured to determine the positional relationship between the target and the first vehicle based on the first distance determined by the at least one second processing unit and / or the first electric signal. The first processing unit is specifically configured to control the first vehicle to perform a first operation based on the positional relationship between the target and the first vehicle.

[0029] In the above embodiments, the second processing unit is directly connected to the antenna, and the second processing unit is configured to process the second electric signal output by the antenna connected thereto and generate the first distance between the target and the antenna. The first processing unit is configured to determine the positional relationship between the target and the first vehicle based on the first distance and / or the first electric signal, so that the determined positional relationship is more accurate and reliable. The first processing unit is further configured to control the first vehicle to perform a first operation based on the positional relationship between the target and the first vehicle, for example, when the distance between the target and the first vehicle is less than or equal to the first distance, the first vehicle is controlled to be unlocked. For another example, when the distance between the target and the first vehicle is greater than the first distance, the first vehicle is controlled to be locked.

[0030] Optionally, the first processing unit is further configured to control the plurality of second processing units to determine the first distance based on the second electric signal in a second order. The second order can be preset or customized, and the application is not limited in this regard.

[0031] In another possible implementation, the first processing unit controls the first vehicle to perform a first operation when the signal strength of the first electrical signal is greater than a first threshold.

[0032] The first threshold can be preset or customized, and the present application does not make any limitation. For example, the first threshold can be determined according to the model of the antenna, the signal characteristics of the target, or the vehicle model.

[0033] Optionally, the first processing unit controls the first vehicle to perform a second operation when the signal strength of the first electrical signal is less than or equal to the first threshold. The second operation includes locking the vehicle, closing the door, or turning off the vehicle, etc.

[0034] In a second aspect, the present application provides a detection method applied to a detection device, the detection device comprising a first processing unit and at least two antennas, the first processing unit being connected to the at least two antennas, and the at least two antennas being arranged on a vehicle body of a first vehicle. The method comprises: each of the at least two antennas receiving a signal and outputting an electrical signal, the first processing unit acquiring a first electrical signal output by a target antenna from the at least two antennas, the target antenna being part of or all of the at least two antennas, and the first processing unit determining a positional relationship between a target and the first vehicle based on the first electrical signal.

[0035] In the present application, the at least two antennas in the detection device can be arranged at different positions of the first vehicle to receive signals from different directions of the first vehicle, and the target antenna is part of or all of the at least two antennas. The first processing unit determines the positional relationship between the target and the first vehicle based on the first electrical signal output by the target antenna, which can timely acquire signals from different directions of the first vehicle and avoid signal omission. The detection device does not arrange multiple processing units to process signals received by the at least two antennas, but uses the first processing unit to process signals received by part of or all of the at least two antennas. On the one hand, since the antenna structure is simple and not easy to be damaged, the reliability of the detection device can be improved. On the other hand, a large number of processing units can be saved, and the cost of the detection device can be reduced as much as possible. In addition, since the antenna has a small volume, it is convenient to select the installation position of the antenna on the first vehicle, thereby facilitating the installation of the detection device on the first vehicle. In summary, the detection device provided by the present application has the characteristics of high reliability, low cost, small volume, and easy installation.

[0036] Optionally, the target is a device, such as a smart phone, a smart watch, a car key card, or a car key ring, etc., which is installed with a digital key.

[0037] Optionally, the positional relationship between the target and the first vehicle includes a distance between the target and the first vehicle, an orientation of the target relative to the first vehicle, or the like.

[0038] In a possible implementation, the detection device further includes a switch unit, the switch unit being configured to connect the first processing unit and the at least two antennas. The first processing unit is configured to acquire the first electric signal output by the target antenna, including: the first processing unit sends a first control signal to the switch unit, the first control signal being configured to control a switching state of the switch unit, so that the target antenna is connected to the first processing unit, and the first processing unit acquires the first electric signal output by the target antenna.

[0039] In the above implementation, the first processing unit can connect the target antenna to the first processing unit by controlling the switch unit, so that the first processing unit acquires the first electric signal output by the target antenna, and interference of signals received by other antennas on signals received by the target antenna is avoided. In general, the first processing unit can connect the first processing unit to any one or more of the at least two antennas by controlling the switch unit, so as to determine the positional relationship between the target and the vehicle based on the first electric signal output by any one or more of the at least two antennas.

[0040] In another possible implementation, the at least two antennas are divided into a plurality of antenna combinations, and each antenna combination includes at least one antenna. The first control signal is configured to instruct the switch unit to connect the plurality of antenna combinations to the first processing unit in a first order.

[0041] In the above implementation, the division manner of dividing the at least two antennas into the plurality of antenna combinations is not limited in the present application. For example, the at least two antennas can be divided according to installation positions of the antennas, for example, a plurality of adjacent antennas can be divided into one antenna combination. Each antenna combination can include one antenna or a plurality of antennas, for example, one antenna combination includes one antenna, two antennas, or three antennas, and the like. Different antenna combinations can include different numbers of antennas, for example, a plurality of antenna combinations include a first antenna combination and a second antenna combination, the first antenna combination includes two antennas, and the second antenna combination includes three antennas. The first order can be preset or customized, and the present application does not limit the first order. In the above implementation, the at least two antennas are divided into the plurality of antenna combinations, and the switch unit is controlled to connect the plurality of antenna combinations to the first processing unit in the first order, so that the connection relationship between the first processing unit and the antennas has a high degree of freedom, and can adapt to requirements of various vehicle models or various scenes, thereby improving practicability and reliability of the detection device.

[0042] In another possible implementation, the detection apparatus further includes at least one second processing unit and an antenna connected to the second processing unit. The method further includes: the first processing unit and the processing unit in the at least one second processing unit sequentially obtaining the electrical signal output by the antenna according to a first polling sequence. The second processing unit determines a first distance between the antenna connected to the second processing unit and the first vehicle based on the obtained electrical signal. The first processing unit determines the positional relationship between the target and the first vehicle based on the first electrical signal, including: the first processing unit determines the positional relationship between the target and the first vehicle based on the first distance and / or the first electrical signal.

[0043] In the above implementation, the first polling sequence can be self-defined or pre-set, which is not limited in the present application. The first processing unit determines the positional relationship between the target and the first vehicle based on the first distance and / or the first electrical signal, so that the determined positional relationship is more accurate and reliable.

[0044] Optionally, the first processing unit further controls the first vehicle to perform a first operation based on the positional relationship between the target and the first vehicle. For example, if the distance between the target and the first vehicle is less than or equal to the first distance, the first processing unit controls the first vehicle to be unlocked. For another example, if the distance between the target and the first vehicle is greater than the first distance, the first processing unit controls the first vehicle to be locked.

[0045] In a third aspect, the embodiments of the present application further provide an electronic device, which includes the detection apparatus of any one of the first aspect.

[0046] In a fourth aspect, the embodiments of the present application further provide a detection system, which includes the detection apparatus of any one of the first aspect.

[0047] In a fifth aspect, a program is provided, which, when executed by a processor, is configured to perform the method of any one of the second aspect.

[0048] In a sixth aspect, a program product is provided, which includes instructions, when executed by a processor, causes the method of any one of the second aspect to be performed.

[0049] In a seventh aspect, the embodiments of the present application further provide a vehicle, which includes the detection apparatus of any one of the first aspect, or the electronic device of any one of the third aspect, or the detection system of any one of the fourth aspect.

[0050] In an eighth aspect, a computer-readable storage medium is provided, which is configured to store a program, when executed by a processor, causes the method of any one of the second aspect to be performed.

[0051] In a ninth aspect, an embodiment of the present application provides a chip, comprising a processor, wherein the processor is configured to execute instructions, and when the processor executes the instructions, the chip is caused to execute the reminding method in any one of the second aspect.

[0052] The technical effects of the partial solutions of the third aspect to the ninth aspect of the present application can be correspondingly referred to the technical effects of the technical solutions of the first aspect or the second aspect. BRIEF DESCRIPTION OF DRAWINGS

[0053] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings needed to be used in the embodiments of the present application will be briefly introduced as follows. Obviously, the drawings described below are only some embodiments of the present application, and other drawings can also be obtained by those skilled in the art without any creative effort on the basis of these drawings.

[0054] FIG. 1 is a schematic diagram of a scene of a digital key provided by the present application;

[0055] FIG. 2A is a schematic diagram of a scene of another digital key provided by the present application;

[0056] FIG. 2B is a schematic diagram of a scene of another digital key provided by the present application;

[0057] FIG. 3A is a schematic diagram of a structure of a detection device provided by the present application;

[0058] FIG. 3B is a schematic diagram of a structure of another detection device provided by the present application;

[0059] FIG. 4 is a schematic diagram of a structure of another detection device provided by the present application;

[0060] FIG. 5A is a schematic diagram of a structure of another detection device provided by the present application;

[0061] FIG. 5B is a schematic diagram of a structure of another detection device provided by the present application;

[0062] FIG. 6 is a schematic diagram of a layout of at least two antennas on a first vehicle provided by the present application;

[0063] FIG. 7 is a schematic diagram of a layout of at least two antennas on a first vehicle provided by the present application;

[0064] FIG. 8 is a schematic diagram of a layout of at least two antennas on a first vehicle provided by the present application;

[0065] FIG. 9 is a schematic diagram of a layout of at least two antennas on a first vehicle provided by the present application;

[0066] FIG. 10A to FIG. 10D are schematic diagrams of another layout of at least two antennas on a first vehicle according to the present application;

[0067] FIG. 11A to FIG. 11C are schematic diagrams of a first processing unit connecting antenna sequence according to an embodiment of the present application;

[0068] FIG. 12 is a schematic diagram of another detection device according to the present application;

[0069] FIG. 13A is a schematic diagram of a layout of a detection device on a first vehicle according to the present application;

[0070] FIG. 13B is a schematic diagram of a node according to the present application;

[0071] FIG. 14 to FIG. 16 are schematic diagrams of polling received signals according to the present application;

[0072] FIG. 17 is a schematic diagram of a detection method according to the present application;

[0073] FIG. 18 is a schematic block diagram of a detection device according to an embodiment of the present application. DETAILED DESCRIPTION

[0074] The terms "first", "second", and the like in the description and in the claims of the present application are used for distinguishing between similar objects talking about the application and do not necessarily have a particular chronological, spatial or logical ordering other than that which might be apparent from the circumstances, for example, where a first device is described as taking action before a second device takes action in a discussion. The terminology used in the detailed description of the application, both in the specification and the claims, will be understood by a person of ordinary skill in the art to be descriptive, and in no way limiting, unless otherwise explicitly defined by context. The use of any and all examples, or exemplary language (e.g., "for example", "for instance", "as an example", or "like", or "as are"), is intended merely to better illuminate the application and does not pose a limitation on the scope of the application unless otherwise claimed. No structure, act, or other item shown or described as an example is intended to be crucial to the application, unless otherwise stated in the claims. No structure, act, or other item shown or described should be interpreted as being essential to the application unless otherwise explicitly claimed.

[0075] The following terms are first explained in the present application. It should be noted that the explanations are for the convenience of understanding by those skilled in the art, and are not intended to limit the scope of protection required by the present application.

[0076] (1) Vehicle.

[0077] A vehicle in this application refers to an apparatus including a power device and a traction device. Exemplarily, the vehicle can be a vehicle (such as a commercial vehicle, a passenger vehicle, a motorcycle, a flying vehicle, an electric vehicle, 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.), or an agricultural apparatus (such as a mower, a harvester, etc.), etc. The vehicle can also refer to a robot (an automated guided vehicle (AGV), a walkable conversational robot, a service robot, etc.), an industrial apparatus (an industrial robot, a mechanical arm, etc.), or a leisure and entertainment apparatus (a virtual reality (VR) apparatus, a mixed reality (MR) apparatus, or a 4D cinema cabin), etc.

[0078] (2) Terminal device.

[0079] The terminal device can also be referred to as a user equipment (UE). The terminal device can be a cellular phone, a cordless phone, a session initiation protocol (SIP) phone, a smart phone, a handset, a wireless local loop (WLL) station, a personal digital assistant (PDA), a handheld device having wireless communication function, a computing device or other devices connected to a wireless modem, a vehicle-mounted terminal device, a wearable device, a drone device, or a terminal in Internet of Things, Internet of Vehicles, 5G mobile communication network, and future network, or a terminal in future evolved public land mobile network (PLMN), etc. For example, the terminal device can be a virtual reality (VR) terminal, an augmented reality (AR) terminal, a wireless terminal in industrial control, a wireless terminal in unmanned driving, a wireless terminal in remote medical treatment, a wireless terminal in smart grid, a wireless terminal in transport safety, a wireless terminal in smart city, a wireless terminal in smart home, etc. The embodiments of this application do not make any limitation in this regard.

[0080] (3) Digital key.

[0081] The digital key is a technology that realizes identity confirmation between devices by means of communication technology, thereby helping a user to realize functions such as unlocking / locking, etc. For example, the digital key is used to realize identity confirmation between a terminal device and a vehicle, thereby helping a user to realize functions such as vehicle unlocking / vehicle locking, etc. The digital key has many important functions. Taking the vehicle as an example, the digital key can improve the convenience of the vehicle owner using the vehicle, so that the vehicle owner can easily realize functions such as vehicle unlocking, vehicle locking, vehicle starting, and vehicle stopping without carrying a traditional physical key. In addition, the digital key can provide personalized vehicle settings according to the usage habits of the vehicle owner. Furthermore, the digital key performs well in vehicle sharing and permission management, for example, facilitating the management of rental vehicle permissions by an operator, and the vehicle owner can set the permission range for others to use the vehicle, etc.

[0082] The hardware part of the digital key is composed of a terminal device and a vehicle-side device. The terminal device and the vehicle-side device have relevant communication capabilities and can establish a communication connection. For example, the terminal device can send signals through communication technologies such as star flash, Bluetooth, NFC, or UWB. Correspondingly, the vehicle-side device can receive star flash signals, Bluetooth signals, NFC signals, or UWB signals, etc. Further, the vehicle-side device can process the received signals and generate relevant control information. For example, the vehicle-side device processes the received signals to generate control information such as vehicle unlocking, vehicle locking, engine starting, etc.

[0083] Optionally, the signal sent by the terminal device can use an encryption algorithm, including one or more of the advanced encryption standard (AES), the Rivest Shamir Adleman (RSA) algorithm, etc.

[0084] Optionally, the digital key technology can also be applied to other devices, such as access control, gate, or car stop, etc. When the digital key technology is applied to other devices, the first vehicle in the present application can be replaced by other devices, for example, the other devices are access control, gate, or car stop, etc. Correspondingly, the vehicle-side device in the present application can be replaced by an access control-side device, a gate-side device, or a car stop-side device, etc. In summary, the present application takes the vehicle as an example to exemplarily introduce the digital key. The methods and devices provided by the present application can also be applied to other devices.

[0085] Please refer to FIG. 1, which is a schematic diagram of a digital key scene provided by the present application. As shown in FIG. 1, the digital key scene includes a first vehicle 101 and a target 102. The first vehicle 101 is provided with a plurality of nodes, for example, node 1, node 2, node 3, and node 4. The plurality of nodes on the first vehicle 101 are used to receive signals and process the signals. The target 102 is, for example, a smart watch. The target 102 can send signals, which include identity information of a terminal device, control information, and the like. After receiving the signals, the plurality of nodes on the first vehicle 101 can first perform signal analysis and identity verification. If the identity verification is passed, the first vehicle 101 can generate a corresponding control signal based on the strength of the signals and the control information in the signals to control the first vehicle 101 to perform relevant operations, for example, to control the first vehicle 101 to perform operations such as unlocking, locking, turning on a welcome light, starting, or shutting down.

[0086] Please refer to FIG. 2A and FIG. 2B. The user carries a terminal device of a digital key, for example, the target 102 described above. The area covered by the dashed circle is used to represent that the distance between the target 102 and the first vehicle 101 meets a preset requirement. The first vehicle 101 can perform relevant operations based on the signals sent by the target 102. For example, when the user enters the area covered by the dashed circle, the door of the first vehicle 101 is automatically opened, as shown in FIG. 2A. For another example, when the user leaves the area covered by the dashed circle, the door of the first vehicle 101 is automatically closed.

[0087] Optionally, the dashed circle shown in FIG. 2A and FIG. 2B is exemplary. In the implementation process of the scheme, the area can also be of other patterns, for example, a square, an ellipse, a trapezoid, and the like. The area can also be an irregular figure. The present application does not limit this.

[0088] Optionally, in a specific implementation, there can be no concept of a circle. The dashed circle described in FIG. 2A and FIG. 2B is used to exemplarily represent the positional relationship between the target 102 and the first vehicle 101. In the implementation process of the scheme, the nodes on the first vehicle 101 can calculate the positional relationship between the target 102 and the first vehicle 101 based on the received signals, so as to determine whether to control the first vehicle 101 to perform relevant operations.

[0089] In order to facilitate understanding of the scheme provided by the present application, several ranging technologies are introduced as follows.

[0090] 1) Received signal strength indicator (RSSI) ranging.

[0091] The signal transmitting end actively sends signals in the process of communication. As the distance between the signal receiving end and the signal transmitting end increases, the signal strength received by the signal receiving end will continuously attenuate. By comparing the RSSI values of the signal transmitting end and the signal receiving end, the distance between the two can be calculated. The distance d between the signal transmitting end and the signal receiving end can be described by the following formula:

[0092] D = 10 ((abs (RSSI) - a) / (10 * n)),

[0093] wherein RSSI represents the strength of the signal received by the signal receiving end, a is the signal strength when the signal transmitting end and the signal receiving end are 1 meter apart, and n is an environmental attenuation factor.

[0094] 2) Channel sounding (CS) ranging.

[0095] CS ranging refers to using the characteristics of a channel to achieve ranging in a specific frequency band (such as a Bluetooth frequency band). By operating on multiple radio frequency physical channels, a device will perform phase measurement and round trip time (RTT) measurement. One device sends signals as a starter, and the other device repeatedly transmits signals without modifying the phase. For each frequency transmission, the starter measures the phase change between the transmitted signal and the received signal. When two or more signals of different frequencies are used, the phase difference between the signals can be used to accurately estimate the distance. Meanwhile, RTT measurement can further correct the distance estimation result, thereby improving the accuracy of ranging.

[0096] For example, 79 radio frequency physical channels are defined in the 2.4 GHz frequency band, and 72 of them are actually used. Distance estimation and mutual correction are performed through phase measurement and round trip time (RTT) measurement to achieve more accurate distance measurement and other functions.

[0097] 3) Time of flight (TOF) ranging.

[0098] TOF ranging is based on measuring the time taken by a signal to fly back and forth between two devices to determine the distance between the two devices. Specifically, one device transmits a specific signal (such as an optical signal or a radio signal), which propagates at the speed of light (approximately the speed of light in a vacuum in air) to the other device, and then is reflected back or directly responded by the receiving device and transmitted back to the transmitting device. By accurately measuring the time interval from signal transmission to reception, since distance is equal to speed multiplied by time, the measured time multiplied by the speed of light and divided by 2 (if it is a round trip measurement, it needs to be divided by 2 to obtain the one-way distance), the distance between the two devices can be calculated.

[0099] 4) Time difference of arrival (TDOA) ranging.

[0100] TDOA ranging is based on the time difference of signal arrival at different receiving points to determine the location of the signal source or calculate the distance to the signal source. Assuming there are multiple base stations or receiving points, when the signal source sends a signal, due to the different distances between the receiving points and the signal source, the time of signal arrival at each receiving point is also different. By accurately measuring the time difference of signal arrival at two or more receiving points, according to the signal propagation speed (usually the speed of light, a fixed value in a known environment), the signal source is located on a hyperbola with these receiving points as foci. If there are enough receiving points, the intersection of multiple hyperbolas is the location of the signal source, thereby achieving positioning, or calculating the distance to the signal source through some algorithm using the time difference.

[0101] As can be known from the above description, the node provided on the first vehicle 101 is used to receive signals from the target 102. For ease of understanding, the device used for receiving signals and processing signals will be referred to as a detection device in the following description. The detection device can be provided on the first vehicle 101, and can also be provided on other devices, such as access control, gate or car stop, etc. The present application does not limit this. Next, the present application will be exemplarily introduced taking the detection device provided on the first vehicle 101 as an example.

[0102] The detection device includes a first processing unit and at least two antennas. The detection device is applied to a first vehicle, for example, the vehicle shown in the above description, which will not be repeated here. The first processing unit has a signal processing function and can process the signals received by the at least two antennas and obtain corresponding information.

[0103] The first processing unit is connected with the at least two antennas respectively, which can be achieved in the following three ways.

[0104] The first processing unit includes a radio frequency interface, and the first processing unit is connected with the at least two antennas through the radio frequency interface. Please refer to FIG. 3A, which is a structural schematic diagram of a detection device provided by the present application. As shown in FIG. 3A, the detection device 310 includes a first processing unit 301, an antenna 1, an antenna 2, an antenna 3 and an antenna 4. The first processing unit 301 includes a radio frequency interface 1, and the antennas 1 to 4 are connected with the first processing unit 301 through the radio frequency interface 1. Correspondingly, the first processing unit 301 obtains the first electric signals output by the antennas 1 to 4 through the radio frequency interface 1.

[0105] Optionally, the detection device 310 may also include a power amplifier, an antenna aggregation module, and RF coaxial connectors. As shown in Figure 3B, the detection device 310 includes a first processing unit 301, a power amplifier, an antenna aggregation module, RF coaxial connectors 1 to 4, and antennas 1 to 4. The power amplifier amplifies the electrical signals output by the antennas, facilitating analysis and processing by the first processing unit 301. The antenna aggregation module aggregates the electrical signals output by antennas 1 to 4 and generates a first electrical signal. The RF coaxial connectors 1 to 4 are used to output the numerical values ​​of the electrical signals from antennas 1 to 4. The power amplifier may be, for example, a front-end module (FEM) power amplifier, and the RF coaxial connectors may be, for example, a FAKRA connector, an SMA connector, or an N-type connector.

[0106] Method 2: The first processing unit includes at least two radio frequency (RF) interfaces. The first processing unit is connected to at least two antennas through the at least two interfaces respectively. For example, the first processing unit includes four RF interfaces, and the at least two antennas include four antennas. The first processing unit is connected to the four antennas through the four RF interfaces respectively, that is, the four antennas are connected to the four RF interfaces in a one-to-one correspondence. As shown in Figure 4, the detection device 310 includes a first processing unit 301, antenna 1, antenna 2, antenna 3, and antenna 4. The first processing unit 301 includes RF interface 1, RF interface 2, RF interface 3, and RF interface 4. Antennas 1, 2, 3, and 4 are connected to RF interface 1, RF interface 2, RF interface 3, and RF interface 4 respectively. The first processing unit 301 acquires the first electrical signals output by antennas 1 to 4 through RF interfaces 1 to 4 respectively.

[0107] Optionally, the detection device 310 may also include a power amplifier, an antenna aggregation module, and an RF coaxial connector. To avoid redundancy, the description of the detection device 310 including a power amplifier, an antenna aggregation module, and an RF coaxial connector can be found in Figure 3B above, and will not be repeated here.

[0108] Optionally, the detection device 310 can further comprise a power amplifier, an antenna aggregation module, and a radio frequency coaxial connector, etc. As shown in FIG. 5B, the detection device 310 comprises a first processing unit 301, a power amplifier, a switch unit 302, a radio frequency coaxial connector 1 to a radio frequency coaxial connector 4, and an antenna 1 to an antenna 4. The first processing unit 301 comprises a radio frequency interface 1 and a general purpose input / output (GPIO) interface 1 to a GPIO interface 3. The antenna 1 to the antenna 4 are connected to the switch unit 302 through the radio frequency coaxial connector 1 to the radio frequency coaxial connector 4. The power amplifier is connected between the radio frequency interface 1 and the switch unit 302. The switch unit 302 is further connected to the GPIO interface 1 to the GPIO interface 3. The first processing unit 301 can control the switch unit 302 through the GPIO interface 1 to the GPIO interface 3. By controlling the switch unit 302, the signal transmission of one or more of the antenna 1 to the antenna 4 can be adjusted to be turned on or turned off.

[0109] Optionally, the detection device 310 can further comprise a power amplifier, an antenna aggregation module, and a radio frequency coaxial connector, etc. As shown in FIG. 5B, the detection device 310 comprises a first processing unit 301, a power amplifier, a switch unit 302, a radio frequency coaxial connector 1 to a radio frequency coaxial connector 4, and an antenna 1 to an antenna 4. The first processing unit 301 comprises a radio frequency interface 1 and a general purpose input / output (GPIO) interface 1 to a GPIO interface 3. The antenna 1 to the antenna 4 are connected to the switch unit 302 through the radio frequency coaxial connector 1 to the radio frequency coaxial connector 4. The power amplifier is connected between the radio frequency interface 1 and the switch unit 302. The switch unit 302 is further connected to the GPIO interface 1 to the GPIO interface 3. The first processing unit 301 can control the switch unit 302 through the GPIO interface 1 to the GPIO interface 3. By controlling the switch unit 302, the signal transmission of one or more of the antenna 1 to the antenna 4 can be adjusted to be turned on or turned off.

[0110] Optionally, the switch unit is a double-pole four-throw switch, for example.

[0111] Optionally, the first processing unit 301 described above can be a star flash chip, an NFC chip, a Bluetooth chip, or a UWB chip, etc.

[0112] Optionally, the first processing unit 301 described above can be further connected with a control area network transceiver (CAN transceiver) and an eSE chip, which are not limited in the present application.

[0113] Each of the at least two antennas is configured to receive a signal and output an electrical signal. The signal received by the at least two antennas can be one or more of a Bluetooth signal, a Starlink signal, an NFC signal, or a UWB signal. As described above, the signal transmitted by the terminal device includes identity information of the terminal device and control information. However, the focus of the present application is not identity verification. In order to reduce redundancy, the signal received by the antenna in the present application refers to a signal that can be verified by the detection device.

[0114] The first processing unit is configured to determine a positional relationship between the target and the first vehicle based on a first electrical signal output by some or all of the at least two antennas. The first electrical signal can be composed of electrical signals output by some of the at least two antennas, or the first electrical signal can be composed of electrical signals output by all of the at least two antennas. The positional relationship between the target and the first vehicle can include a distance between the target and the first vehicle, or a direction between the target and the first vehicle. The target can be a terminal device that transmits a signal, such as a smartphone, a smart wearable device, or a car key.

[0115] The at least two antennas are arranged on a vehicle body of the first vehicle. It can be understood that the at least two antennas arranged on the vehicle body of the first vehicle are used to better acquire signals, so that the first processing unit can timely determine the positional relationship between the target and the first vehicle based on the signals acquired by the antennas, and then generate a related control signal to control the first vehicle to perform a corresponding operation.

[0116] In a possible implementation, the positions of the at least two antennas distributed on the first vehicle are determined by a vehicle model of the first vehicle.

[0117] The vehicle model of the first vehicle can include a sedan, an SUV, an MPV, a sports car, a pickup truck, or a new energy vehicle, for example. Further, the sedan can be further classified into a micro sedan, a small sedan, a compact sedan, a medium sedan, a large sedan, and the like. The SUV can be further classified into a small SUV, a compact SUV, a medium SUV, a medium-large SUV, a large SUV, and the like. The MPV can be further classified into a compact MPV, a medium MPV, a large MPV, and the like. The sports car can be further classified into an entry-level sports car, a medium-level sports car, a super sports car, an ultimate sports car, and the like. The pickup truck can be further classified into a small pickup truck, a medium pickup truck, a large pickup truck, and the like. In addition, the vehicle can be classified according to the length, width, and height of the vehicle. It can be understood that the positions of the at least two antennas distributed on the first vehicle are determined by the vehicle model of the first vehicle, so that the at least two antennas can be reasonably distributed according to the vehicle model of the first vehicle, and the at least two antennas can accurately and effectively receive signals to determine the positional relationship between the target and the first vehicle.

[0118] Next, several layouts of arranging at least two antennas on the first vehicle are shown in combination with the accompanying drawings.

[0119] Layout one, the at least two antennas include two antennas, and the two antennas are arranged on side doors of the first vehicle.

[0120] Please refer to FIG. 6, which is a schematic diagram of a layout of at least two antennas on a first vehicle provided by the present application. As shown in FIG. 6, the two antennas are respectively antenna 1 and antenna 2, and the antenna 1 and the antenna 2 are arranged on the left side door and the right side door of the first vehicle respectively. It can be understood that by arranging the two antennas on the side doors of the first vehicle, it is beneficial for the at least two antennas to receive signals from both sides of the vehicle, so that when the target approaches / leaves the first vehicle from any side of the vehicle, the antennas can timely obtain the signals of the target, thereby ensuring that the first processing unit can determine the positional relationship between the target and the first vehicle based on the first electric signals output by the antennas.

[0121] Optionally, the at least two antennas further include a first antenna, and the first antenna is arranged on a roof of the first vehicle.

[0122] Optionally, the antenna 1, the antenna 2 and the first antenna are all connected with the first processing unit 301.

[0123] Optionally, the two antennas can also be arranged on the A-pillar, the B-pillar or the C-pillar of the first vehicle respectively.

[0124] Optionally, the two antennas can also be arranged on side windows of the first vehicle respectively, for example, the two antennas are arranged on the left front quarter window and the right front quarter window of the first vehicle respectively, and for another example, the two antennas are arranged on the left rear quarter window and the right rear quarter window of the first vehicle respectively.

[0125] Layout two, the at least two antennas include four antennas, and the four antennas are arranged on the front windshield, the left front quarter window, the right front quarter window and the rear windshield of the first vehicle respectively.

[0126] Please refer to FIG. 7, which is a schematic diagram of another layout of at least two antennas on the first vehicle. As shown in FIG. 7, the four antennas are respectively antenna 1, antenna 2, antenna 3 and antenna 4, which are respectively arranged on the front windshield, the left front quarter window, the right front quarter window and the rear windshield of the first vehicle, so that the four antennas can respectively receive signals from the front, rear, left and right of the first vehicle, so that when the target approaches / leaves the first vehicle from any direction of the vehicle, the antennas can timely obtain the signals of the target, thereby ensuring that the first processing unit can determine the positional relationship between the target and the first vehicle based on the first electric signal. In addition, arranging the four antennas on the respective glass of the first vehicle is also conducive to the antennas receiving signals from the inside of the vehicle, so that the first processing unit can determine whether the target is located inside the first vehicle based on the first electric signal.

[0127] Optionally, the at least two antennas further comprise a first antenna arranged on the roof of the first vehicle.

[0128] Optionally, the antenna 1, the antenna 2, the antenna 3, the antenna 4 and the first antenna are all connected with the first processing unit 301.

[0129] Optionally, the four antennas can also be respectively arranged on the front windshield, the left rear quarter window, the right rear quarter window and the rear windshield of the first vehicle.

[0130] Optionally, the four antennas can also be respectively arranged on the front windshield, the left front quarter window, the right rear quarter window and the rear windshield of the first vehicle.

[0131] Optionally, the four antennas can also be respectively arranged on the front windshield, the left rear quarter window, the right front quarter window and the rear windshield of the first vehicle.

[0132] Optionally, the four antennas can also be respectively arranged on the front windshield, the left side door, the right side door and the rear windshield of the first vehicle.

[0133] Optionally, the four antennas can also be respectively arranged on the front windshield, the left B-pillar, the right B-pillar and the rear windshield of the first vehicle.

[0134] Optionally, the layout of the four antennas on the first vehicle encloses the first vehicle as much as possible, so that the four antennas can timely receive the signals sent by the target. For example, the four antennas are uniformly arranged around the first vehicle.

[0135] Optionally, the four antennas comprise an antenna arranged on a glass (for example, a front windshield, a side window glass, a rear windshield or a sunroof, etc.) of the first vehicle. In this way, the four antennas can timely obtain the signals inside the vehicle, so that the first processing unit can determine whether the target is located inside the first vehicle based on the first electric signal.

[0136] Optionally, the at least two antennas further include a first antenna, and the first antenna is arranged on a roof of the first vehicle. Please refer to FIG. 8, which is a schematic view of another layout of the at least two antennas on the first vehicle according to the present application. As shown in FIG. 8, the at least two antennas include antennas arranged on the front windshield, the left front quarter window, the right front quarter window and the rear windshield of the first vehicle respectively, and further include a first antenna arranged on the roof of the first vehicle. It can be understood that the first vehicle is mostly made of metal, which has a certain shielding effect on signals. By arranging the first antenna on the roof of the first vehicle, the first processing unit can determine whether the target is located inside the first vehicle based on the electrical signals output by the first antenna.

[0137] Optionally, the at least two antennas further include a first antenna, and the first antenna is arranged on a roof of the first vehicle.

[0138] Optionally, the antenna 1, the antenna 2, the antenna 3, the antenna 4 and the first antenna are all connected with the first processing unit 301.

[0139] It can be understood that the layout of the four antennas on the first vehicle is various, and will not be enumerated here.

[0140] Layout three, the at least two antennas include five antennas, and the five antennas are arranged on the left side of the front bumper, the right side of the front bumper, the left side of the rear bumper, the right side of the rear bumper and the roof of the first vehicle respectively.

[0141] Please refer to FIG. 9, which is a schematic view of another layout of the at least two antennas on the first vehicle according to the present application. As shown in FIG. 9, the five antennas are respectively an antenna 1, an antenna 2, an antenna 3, an antenna 4 and an antenna 5, and the antenna 1, the antenna 2, the antenna 3, the antenna 4 and the antenna 5 are arranged on the left side of the front bumper, the right side of the front bumper, the left side of the rear bumper, the right side of the rear bumper and the roof of the first vehicle respectively. In this way, the five antennas can receive signals from the front, the rear, the left and the right of the first vehicle and the inside of the first vehicle respectively. When the target approaches / leaves the first vehicle from any direction of the first vehicle, the antennas can timely obtain the signals of the target, so as to ensure that the first processing unit can determine the positional relationship between the target and the first vehicle based on the first electrical signals.

[0142] Optionally, the antenna 1, the antenna 2, the antenna 3, the antenna 4 and the antenna 5 are all connected with the first processing unit 301.

[0143] Optionally, the five antennas are arranged on the left headlamp, the right headlamp, the left tail lamp, the right tail lamp and the roof of the first vehicle respectively.

[0144] Optionally, the five antennas are arranged on the left side of the hood, the right side of the hood, the left side of the tailgate, the right side of the tailgate and the roof of the first vehicle respectively.

[0145] Optionally, the at least two antennas further include a second antenna and a third antenna, the second antenna is arranged on the left side door of the first vehicle, and the third antenna is arranged on the right side door of the first vehicle.

[0146] Optionally, the layout of the five antennas on the first vehicle encloses the first vehicle as much as possible, so that the target sending signal can be received in time through the five antennas. For example, the five antennas are uniformly arranged around the first vehicle.

[0147] The above describes the layout of the at least two antennas on the first vehicle in conjunction with FIGS. 6-9. Next, how to control the at least two antennas arranged on the first vehicle to receive signals is described.

[0148] In one possible implementation, the at least two antennas are divided into a plurality of antenna combinations, and each antenna combination includes at least one antenna. The first processing unit is configured to control the switching unit to connect the plurality of antenna combinations to the first processing unit in a first order.

[0149] Referring to FIG. 10A, FIG. 10A is a schematic diagram of another layout of the at least two antennas on the first vehicle provided by the present application. As shown in FIG. 10A, the at least two antennas include seven antennas, namely, antenna 1, antenna 2, antenna 3, antenna 4, antenna 5, antenna 6 and antenna 7. The antennas 1-6 are uniformly arranged around the first vehicle, and the antenna 7 is arranged on the roof of the first vehicle.

[0150] Next, the antenna combinations are described in conjunction with the layout shown in FIG. 10A.

[0151] 1) Different antenna combinations include different antennas.

[0152] As shown in FIG. 10B, the antennas 1-7 are divided into four antenna combinations, wherein the antennas 1 and 2 form an antenna combination 1, the antennas 3 and 6 form an antenna combination 2, the antennas 4 and 5 form an antenna combination 3, and the antenna 7 forms an antenna combination 4. Of course, in the case where each antenna combination includes one antenna, it also belongs to the case where different antenna combinations include different antennas, for example, the antennas 1-7 shown in FIG. 10A can be regarded as one antenna combination respectively. It can be understood that the range of receiving signals by an antenna has certain limitations. By forming a plurality of antennas into an antenna combination, the limitation of the receiving range of a single antenna can be overcome, thereby accelerating the scanning frequency of the antenna to signals.

[0153] 2) Different antenna combinations can include the same antenna.

[0154] As shown in FIG. 10C, the antennas 1-7 are divided into 7 antenna combinations, in which the antennas 1 and 2 are the antenna combination 1, the antennas 2 and 3 are the antenna combination 2, the antennas 3 and 4 are the antenna combination 3, the antennas 4 and 5 are the antenna combination 4, the antennas 5 and 6 are the antenna combination 5, the antennas 6 and 1 are the antenna combination 6, and the antenna 7 is the antenna combination 7. In this way, one antenna can be used for multiple times of receiving signals in continuous time, so as to avoid missing detection of signals.

[0155] 3) Different antenna combinations include the same number of antennas.

[0156] As shown in FIG. 10D, the antennas 1-7 are divided into 4 antenna combinations, in which the antennas 1 and 2 are the antenna combination 1, the antennas 3 and 6 are the antenna combination 2, the antennas 4 and 5 are the antenna combination 3, and the antennas 6 and 7 are the antenna combination 4. It can be seen that each antenna combination includes two antennas. Of course, in the case where each antenna combination includes one antenna, it also belongs to the case where different antenna combinations include the same number of antennas, for example, the antennas 1-7 shown in FIG. 10A can be regarded as one antenna combination respectively. In this way, the first electric signals output by the antenna combinations are all composed of electric signals output by the same antenna, which is convenient for the first processing unit to process the first electric signals.

[0157] 4) Different antenna combinations can include different numbers of antennas.

[0158] As shown in FIG. 10B, the antenna combination 1, the antenna combination 2 and the antenna combination 3 each include 2 antennas, and the antenna combination 4 includes only 1 antenna.

[0159] 5) Different antenna combinations are used to determine different position relationships.

[0160] Please continue to refer to FIG. 10B, the electric signals output by the antenna combination 1, the antenna combination 2 and the antenna combination 3 in FIG. 10B can be used to determine the position relationship between the target and the first vehicle in the case where the target is outside the first vehicle. The antenna combination 4 in FIG. 10B can be used to determine whether the target is inside the first vehicle. In this way, the first electric signals output by different antenna combinations can be used for different forms of detection, so as to improve the accuracy of detection.

[0161] Optionally, when the ranging technology used by the first processing unit 301 is RSSI ranging, multiple antennas can be included in one antenna combination. When the ranging technology used by the first processing unit 301 is CS ranging, TOF ranging or TDOA ranging, one antenna is included in one antenna combination.

[0162] It can be understood that the above FIG. 10B to FIG. 10D are exemplary and should not be regarded as a limitation of the present application. More antenna combinations can be divided in the implementation process, which is not limited by the present application.

[0163] Next, the antenna combinations shown in FIG. 10B to FIG. 10D are combined with the layout shown in FIG. 10A to illustrate the “first order”.

[0164] 1) Each antenna unit is connected to the first processing unit 301 in turn.

[0165] For example, the antenna combination 1, the antenna combination 2, the antenna combination 3 and the antenna combination 4 are connected to the first processing unit 301 in turn. Exemplarily, the first processing unit 301 can send control information to the switch unit 302 through the GPIO interface, so that the antennas included in the antenna combination 1, the antenna combination 2, the antenna combination 3 and the antenna combination 4 are connected to the first processing unit 301 in turn. In this case, each antenna is connected to the first processing unit 301 at the same frequency. Further, when the antenna combination is connected to the first processing unit 301 through the switch unit 302, the first processing unit 301 can determine the positional relationship between the target and the first vehicle through the first electric signal output by the antenna combination.

[0166] As shown in FIG. 11A, the first processing unit 301 is connected to the antenna combination 1, the antenna combination 2, the antenna combination 3 and the antenna combination 4 in turn.

[0167] Alternatively, when the first processing unit 301 determines that the positional relationship between the target and the first vehicle based on the first electric signal output by the target antenna combination satisfies the preset condition, the first processing unit 301 can control the switch unit 302 to connect the target antenna combination to the first processing unit 301 and acquire the first electric signal output by the target antenna combination, so as to determine again whether the positional relationship between the target and the first vehicle satisfies the preset condition. The preset condition is, for example, that the distance between the target and the first vehicle is less than or equal to the first distance, the distance between the target and the first vehicle is greater than the first distance, the target is located inside the first vehicle, etc.

[0168] As shown in FIG. 11B, the first processing unit 301 is connected to the antenna combination 1, the antenna combination 2, the antenna combination 3 and the antenna combination 4 in turn. The first processing unit 301 determines that the first distance between the target and the vehicle is greater than the first distance based on the first electric signal output by the antenna combination 4, and controls the switch unit 302 to connect the antenna combination 4 to the first processing unit 301 again and acquire the first electric signal output by the antenna combination 4.

[0169] 2) Different antenna combinations have different connection frequencies.

[0170] The first sequence shown in FIG. 11A is that the connection frequency of different antenna combinations to the first processing unit 301 is the same. However, different antenna combinations can be used to determine different position relationships. For example, the electrical signals output by the antenna combination 1, the antenna combination 2 and the antenna combination 3 shown in FIG. 10B can be used to determine the position relationship between the target and the first vehicle when the target is outside the first vehicle. The antenna combination 4 in FIG. 10B can be used to determine whether the target is inside the first vehicle. Therefore, different antenna combinations can be set to different connection frequencies. For example, the connection frequency of the antenna combination 1 to the antenna combination 3 to the first processing unit 301 is greater than the connection frequency of the antenna combination 4 to the first processing unit 301. For example, the connection frequency of the antenna combination 1 to the antenna combination 3 to the first processing unit 301 is 10 Hz, and the connection frequency of the antenna combination 4 to the first processing unit 301 is 5 Hz, etc. As shown in FIG. 11C, the first processing unit 301 is connected to the antenna combination 1 to the antenna combination 3 twice, and is connected to the antenna combination 4 once. The above connection scheme helps the first processing unit 301 to obtain the position relationship between the target and the first vehicle when the target is outside the first vehicle in time.

[0171] Optionally, the connection frequency of the antenna combination to the first processing unit 301 can be 5 Hz, 10 Hz or 20 Hz, etc., which is not limited in the present application.

[0172] Optionally, when the first processing unit 301 is a star flash chip, the connection frequency of the antenna combination to the first processing unit 301 can be 5 Hz, which is not limited in the present application.

[0173] Optionally, when the first processing unit 301 is a Bluetooth chip, an NFC chip or a UWB chip, the connection frequency of the antenna combination to the first processing unit 301 can be 20 Hz, which is not limited in the present application.

[0174] In the above, the detection device 310 includes the first processing unit 301 and at least two antennas. In another possible implementation, the detection device 310 further includes at least one second processing unit and an antenna connected to the second processing unit, the antenna connected to the second processing unit is used to receive a signal and output a second electrical signal, and the second processing unit is used to determine a first distance between the antenna connected to the second processing unit and the target based on the second electrical signal.

[0175] Please refer to FIG. 12, which is a structural schematic diagram of another detection device provided by the present application. As shown in FIG. 12, the detection device 310 comprises a first processing unit 301, a second processing unit 401, a second processing unit 402, an antenna 1 to an antenna 4, wherein the first processing unit 301 comprises a radio frequency interface 1 and is connected with the antenna 1 to the antenna 4 through the radio frequency interface 1. The second processing unit 401 comprises a radio frequency interface 5 and is connected with the antenna 5 through the radio frequency interface 5. The second processing unit 402 comprises a radio frequency interface 6 and is connected with the antenna 6 through the radio frequency interface 6. In addition, the first processing unit 301 is connected with the second processing unit 401 and the second processing unit 402 respectively. The second processing unit 401 can determine the first distance between the antenna 5 and the target based on the second electric signal output by the antenna 5, and the second processing unit 402 can determine the first distance between the antenna 6 and the target based on the second electric signal output by the antenna 6. It should be noted that there are two second processing units in FIG. 12, and in the specific implementation process, the detection device 310 can comprise more or less second processing units, which are not limited by the present application, for example, the detection device 310 comprises 1, 2, 3 or 4 second processing units.

[0176] In a possible implementation, the first processing unit is further configured to determine the positional relationship between the target and the first vehicle based on the first distance determined by the at least one second processing unit and / or the first electric signal.

[0177] As shown in FIG. 12, the first processing unit 301 is connected with the second processing unit 401 and the second processing unit 402 respectively. The first processing unit 301 can be connected with the second processing unit in an indirect manner, for example, the second processing unit sends the generated first distance to the CAN bus of the vehicle, and the first processing unit 301 obtains the first distance by reading the data on the CAN bus. The first processing unit 301 can also be connected with the second processing unit in a direct connection manner, for example, the first processing unit 301 and the second processing unit 401 and the second processing unit 402 transmit data in a wired manner. Specifically, the first distance generated by the second processing unit can be transmitted to the first processing unit 301 in a wired manner. In summary, the first processing unit 301 can obtain the first distance output by the second processing unit.

[0178] Next, several ways of the first processing unit 301 determining the positional relationship between the target and the first vehicle are shown.

[0179] Method one, the first processing unit 301 determines the positional relationship of the first vehicle based on the first distance.

[0180] It can be understood that the installation position of the antenna (for example, the antenna 5, the antenna 6) in the first vehicle is fixed, and therefore, the positional relationship between the target and the first vehicle can be determined in the case of determining the first distance of the antenna. Further, the positional relationship between the target and the first vehicle can be determined based on the first distances corresponding to the plurality of antennas. For example, the positional relationship between the target and the first vehicle can be determined based on the first distances corresponding to the antenna 5 and the antenna 6.

[0181] The second way is that the first processing unit 301 determines the positional relationship between the target and the first vehicle based on the first electrical signal.

[0182] Similarly to the above-mentioned first way, the first electrical signal is an electrical signal output by an antenna connected to the first processing unit 301, and the first processing unit 301 can also determine the distance between the antenna and the target based on the first electrical signal, and further determine the positional relationship between the target and the first vehicle according to the distances between the plurality of antennas and the target. For example, the first processing unit 301 can determine the positional relationship between the target and the first vehicle based on the first electrical signal corresponding to the antenna 1 and the first electrical signal corresponding to the antenna 2.

[0183] The third way is that the first processing unit 301 determines the positional relationship between the target and the first vehicle based on the first distance and the first electrical signal. Similarly to the above-mentioned first way and the second way, the specific implementation is not described here again.

[0184] In order to better understand the case that the detection device 310 includes at least one second processing unit, the layout of the first processing unit 301 and the second processing unit on the first vehicle in this case is shown by the following drawings.

[0185] Please refer to FIG. 13A, which is a schematic diagram of the layout of a detection device provided by the present application on a first vehicle. The introduction of the antenna 1 and the antenna 2 in FIG. 13A can refer to the introduction of the aforementioned FIG. 6, which is not described here again. The position of the first processing unit 301 on the first vehicle in FIG. 13A is exemplary, and the present application does not limit the position of the first processing unit 301 on the first vehicle. The four corners of the first vehicle are also provided with nodes 1 to 4, for example, the left side of the front bumper of the first vehicle is provided with the node 1, the right side of the front bumper of the first vehicle is provided with the node 2, the right side of the rear bumper of the first vehicle is provided with the node 3, and the left side of the rear bumper of the first vehicle is provided with the node 4. Among them, the nodes 1 to 4 all include a second processing unit 401 and an antenna connected to the second processing unit 401, as shown in FIG. 13B.

[0186] Optionally, the first processing unit 301 is also connected to a first antenna, and the first antenna is an antenna provided on the canopy of the first vehicle.

[0187] As to the hardware structure of the first processing unit 301 and the antenna 1, the antenna 2, the first antenna in FIG. 13A, it can refer to the foregoing descriptions of FIG. 3A, FIG. 3B, FIG. 4, FIG. 5A or FIG. 5B, which will not be repeated here.

[0188] Next, taking the layout shown in FIG. 13A as an example, the order of receiving signals by the nodes or the antennas in FIG. 13A is exemplarily introduced.

[0189] 1) The signals are received by the nodes or the antennas in the order shown in FIG. 13A.

[0190] Please refer to FIG. 14, which is a polling cycle. In a polling cycle, the node 1 to the node 4, the antenna 1, the antenna 2 and the first antenna receive signals in turn. Correspondingly, after the node 1 to the node 4 receive signals, the first distances are generated by processing the signals and transmitted to the first processing unit 301. After the antenna 1, the antenna 2 and the first antenna receive signals, the first electric signals are output to the first processing unit 301. As to how the first processing unit 301 determines the positional relationship between the target and the first vehicle based on the first distances and / or the first electric signals, it can refer to the foregoing descriptions, which will not be repeated here.

[0191] 2) In a polling cycle, the first processing unit 301 only controls part of the antenna 1, the antenna 2 and the first antenna to receive signals.

[0192] Please refer to FIG. 15, in a polling cycle, the node 1 to the node 4 receive signals in turn, and the first processing unit 301 only controls one antenna to receive signals. It can be understood that the order of receiving signals shown in FIG. 15, the frequency of receiving signals by the node 1 to the node 4 is greater than the frequency of receiving signals by the antenna 1, the antenna 2 and the first antenna. For example, if the frequency of receiving signals by the node 1 to the node 4 is 20Hz, then the frequency of receiving signals by the antenna 1, the antenna 2 and the first antenna is 20 / 3Hz (about 6.67Hz). For another example, if the frequency of receiving signals by the node 1 to the node 4 is 5Hz, then the frequency of receiving signals by the antenna 1, the antenna 2 and the first antenna is 5 / 3Hz (about 1.67Hz).

[0193] Optionally, when the first processing unit 301 and the second processing unit are both starburst chips, the frequency of receiving signals by the node 1 to the node 4 can be 5Hz, and the frequency of receiving signals by the antenna 1, the antenna 2 and the first antenna can be 5 / 3Hz (about 1.67Hz), which is not limited in the present application.

[0194] Optionally, when the first processing unit 301 and the second processing unit are all Bluetooth chips, NFC chips or UWB chips, the frequency of the signals received by the node 1 to the node 4 can be 20 Hz, and the frequency of the signals received by the antenna 1, the antenna 2 and the first antenna can be 20 / 3 Hz (about 6.67 Hz), which is not limited in the present application.

[0195] 3) The node 1 to the node 4 receive signals in a specified order and a first frequency order, and the antenna 1, the antenna 2 and the first antenna receive signals in a specified order and a second frequency order.

[0196] Please refer to FIG. 16, the node 1 to the node 4 receive signals in the order of the node 1, the node 2, the node 3 and the node 4, and the antenna 1, the antenna 2 and the first antenna receive signals in the order of the antenna 1, the antenna 2 and the first antenna, and the two cycles do not interfere with each other. The first frequency and the second frequency can be the same or different. For example, the first frequency and the second frequency are both 10 Hz, and for another example, the first frequency is 10 Hz and the second frequency is 5 Hz, which is not limited in the present application. The first frequency refers to the frequency of the signals received by any one of the node 1 to the node 4, and the second frequency refers to the frequency of the signals received by the antenna 1, the antenna 2 or the first antenna.

[0197] The above shows a plurality of receiving signal orders, and it can be seen that the scheme provided in the present application has high flexibility in the order of receiving signals, so that the detection method provided in the present application can flexibly set the order of receiving signals based on specific conditions, thereby improving the reliability of the detection device in receiving signals.

[0198] In a possible implementation, the first processing unit 301 controls the first vehicle to perform a first operation when it is determined that the signal strength of the first electric signal is greater than a first threshold.

[0199] It can be known from the aforementioned RSSI ranging that the distance between the target and the first vehicle is positively correlated with the RSSI value of the signal, so when the signal strength of the first electric signal is greater than the first threshold, it can be determined that the distance between the target and the first vehicle is less than or equal to the first distance, so that the first vehicle can be controlled to perform a first operation. The first operation includes unlocking, turning on a welcome light, starting the vehicle or opening a door, etc. It should be noted that the setting of the first threshold is not limited in the present application, and the setting of the first threshold can be related to the antenna model, the length of the signal line between the antenna and the first processing unit, the initial strength of the signal emitted by the target, etc.

[0200] Optionally, the first processing unit 301 controls the first vehicle to perform a second operation when it is determined that the signal strength of the first electric signal is less than or equal to the first threshold.

[0201] Similarly, when it is determined that the signal strength of the first electric signal is less than or equal to the first threshold value, it is determined that the distance between the target and the first vehicle is greater than the first distance, and thus the first vehicle can be controlled to perform a second operation. The first operation includes locking, turning off, closing the door, and the like.

[0202] Next, the detection method provided in the present application will be described by way of example.

[0203] Referring to FIG. 17, FIG. 17 is a flowchart of a detection method provided in an embodiment of the present application. As shown in FIG. 17, the detection method can include one or more of steps S1701 to S1703. For example, in some schemes, only steps S1701 and S1703 can be included. It should be understood that, for the convenience of description, the steps S1701 to S1703 are described in this order, and it is not intended to limit the execution in the above order. The present application does not limit the order of execution, the time of execution, the number of executions, and the like of the one or more steps. The steps S1701 to S1703 are specifically as follows:

[0204] S1701, each of the at least two antennas receives a signal and outputs an electric signal.

[0205] The at least two antennas are antennas in the detection device 310 connected to the first processing unit 301, and specific descriptions can be referred to the foregoing descriptions of FIGS. 3A, 3B, or 4. How each of the at least two antennas receives a signal and outputs an electric signal can also be referred to the foregoing descriptions of FIGS. 3A, 3B, or 4.

[0206] In one possible implementation, the at least two antennas are divided into a plurality of antenna combinations, and each antenna combination includes at least one antenna. Specific descriptions can be referred to the foregoing descriptions of FIGS. 10B to 10D, which are not repeated here.

[0207] In another possible implementation, the detection device 310 includes a switching unit for connecting the first processing unit and the at least two antennas. Specific descriptions can be referred to the foregoing descriptions of FIGS. 5A or 5B, which are not repeated here.

[0208] S1702, the first processing unit acquires a first electric signal output by a target antenna of the at least two antennas, the target antenna being part or all of the at least two antennas. Taking FIGS. 3A, 3B, or 4 as an example, the target antenna is the antenna 1 to the antenna 4. Taking FIGS. 5A or 5B as an example, the target antenna is an antenna connected to the first processing unit 301 through the switching unit 302.

[0209] In a possible implementation, the first processing unit 301 sends a first control signal to the switch unit 302, and the first control signal is used to control the switch state of the switch unit 302, so that the target antenna is connected to the first processing unit.

[0210] For example, the target antenna is the antenna 1, and the first processing unit 301 sends a first control signal to the switch unit 302 through the GPIO interface 1, and the first control signal is used to control the switch device of the switch unit 302, so that the antenna 1 is connected to the first processing unit 301.

[0211] Optionally, in the case where the first processing unit 301 is connected to the target antenna through the switch unit 302, the first processing unit 301 can obtain a first electric signal output by the target antenna. Further, the first processing unit 301 determines the positional relationship between the target and the first vehicle based on the first electric signal.

[0212] In another possible implementation, the first control signal is used to instruct the switch unit 302 to connect a plurality of antenna combinations to the first processing unit 301 in a first order. For the first order, refer to the foregoing description of FIG. 11A or FIG. 11B, which will not be repeated here.

[0213] As shown in FIG. 12, FIG. 13A, and FIG. 13B, the detection device 310 can further include at least one second processing unit and an antenna connected to the second processing unit. The second processing unit determines a first distance between the antenna connected to the second processing unit and the first vehicle based on an obtained electric signal. In this case, the processing units in the first processing unit and the at least one second processing unit can obtain electric signals output by the antennas in a first polling order. For details, refer to the foregoing description of FIG. 14, FIG. 15, or FIG. 16, which will not be repeated here.

[0214] S1703. The first processing unit determines the positional relationship between the target and the first vehicle based on the first electric signal.

[0215] Next, several ways in which the first processing unit 301 determines the positional relationship between the target and the first vehicle are shown.

[0216] Method one: The first processing unit 301 determines the positional relationship of the first vehicle based on the first distance.

[0217] It can be understood that the installation positions of the antennas (for example, the antenna 5 and the antenna 6 in FIG. 13A) on the first vehicle are fixed, and thus, the positional relationship between the target and the first vehicle can be determined based on the first distance between the antenna and the first vehicle. Further, the positional relationship between the target and the first vehicle can be determined based on the first distances corresponding to a plurality of antennas. For example, the positional relationship between the target and the first vehicle can be determined based on the first distances corresponding to the antenna 5 and the antenna 6.

[0218] The second way is that the first processing unit 301 determines the positional relationship between the target and the first vehicle based on the first electric signal.

[0219] Similar to the first way, the first electric signal is the electric signal output by the antenna connected to the first processing unit 301, and the first processing unit 301 can also determine the distance between the antenna and the target based on the first electric signal, and then determine the positional relationship between the target and the first vehicle according to the distances between the target and multiple antennas. For example, the first processing unit 301 can determine the positional relationship between the target and the first vehicle based on the first electric signal corresponding to the antenna 1 and the first electric signal corresponding to the antenna 2.

[0220] The third way is that the first processing unit 301 determines the positional relationship between the target and the first vehicle based on the first distance and the first electric signal. Similar to the first way and the second way, the specific implementation is not described here.

[0221] In summary, the first processing unit 301 in the present application is connected to at least two antennas, and the at least two antennas are arranged on the vehicle body of the first vehicle, so that the first processor can obtain signals from part or all of the at least two antennas, and determine the positional relationship between the target and the first vehicle based on the first electric signals output by part or all of the at least two antennas. The at least two antennas in the detection device 310 can be arranged at different positions of the first vehicle to receive signals from different directions of the first vehicle, ensuring that the detection device can obtain signals from different directions of the first vehicle in time and avoiding signal omission. The detection device 310 does not arrange multiple processing units to process the signals received by the at least two antennas, but uses the first processing unit 301 to process the signals received by part or all of the at least two antennas. On the one hand, since the antenna has a simple structure and is not easy to be damaged, the reliability of the detection device can be improved. On the other hand, a large number of processing units can be saved, and the cost of the detection device can be reduced as much as possible. In addition, since the antenna has a small volume, it is convenient to select the installation position of the antenna on the first vehicle, thereby facilitating the installation of the detection device on the first vehicle. In summary, the detection device 310 provided by the present application has the characteristics of high reliability, low cost, small volume, and easy installation.

[0222] The division of units in the embodiments of the present application is illustrative, and is only a logical functional division. In actual implementation, another division mode can be used. In addition, each functional unit in each embodiment of the present application can be integrated in one processor, or can be physically separated, or two or more units can be integrated in one unit. The integrated unit can be realized in the form of hardware or in the form of a software functional unit.

[0223] It can be understood that the functions of the communication unit in the above embodiments can be implemented by a transceiver, and the functions of the processing unit can be implemented by a processor. The transceiver can include a transmitter and / or a receiver, etc., for implementing the functions of the sending unit and / or the receiving unit, respectively. The following is described by way of example in conjunction with FIG. 18.

[0224] FIG. 18 is a schematic block diagram of another detection apparatus provided in an embodiment of the present application. The detection apparatus 1800 shown in FIG. 18 can be an implementation of a hardware circuit of the apparatus shown in FIG. 3A, FIG. 3B, FIG. 4, FIG. 5A or FIG. 5B. The detection apparatus 1800 is configured to implement the detection method shown in FIG. 17. For ease of illustration, FIG. 18 only shows main components of the detection apparatus.

[0225] The detection apparatus 1800 shown in FIG. 18 includes at least one processor 1801. The detection apparatus 1800 can further include at least one memory 1802 configured to store program instructions and / or data. The memory 1802 and the processor 1801 are coupled. The coupling in the embodiments of the present application is indirect coupling or communication connection between apparatuses, units or modules, which can be electrical, mechanical or other forms, for information interaction between apparatuses, units or modules. The processor 1801 can operate in cooperation with the memory 1802. The processor 1801 can execute program instructions stored in the memory 1802. At least one of the at least one memory 1802 can be included in the processor 1801.

[0226] The detection apparatus 1800 can further include a communication interface 1803 configured to communicate with other devices through a transmission medium, so that the detection apparatus 1800 can communicate with other devices. In the embodiments of the present application, the communication interface can be a transceiver, a circuit, a bus, a module or other types of communication interfaces. In the embodiments of the present application, when the communication interface is a transceiver, the transceiver can include a separate receiver, a separate transmitter, a transceiver integrated with transceiving functions, or an interface circuit.

[0227] It should be understood that the connection medium between the processor 1801, the memory 1802 and the communication interface 1803 in the embodiments of the present application is not limited. In FIG. 18, the memory 1802, the processor 1801 and the communication interface 1803 are connected through a communication bus 1804, which is represented by a thick line in FIG. 18, and the connection mode between other components is only illustrative and is not limited. The bus can include an address bus, a data bus, a control bus and the like. For ease of representation, only one thick line is used in FIG. 18, but it does not mean that there is only one bus or only one type of bus. The operations performed by the processor 1801 can refer to the operations performed by the first processing unit 301 described above, and will not be described here. The operations performed by the communication interface 1803 can refer to the operations performed by the at least two antennas described above, and will not be described here.

[0228] A chip includes a processor coupled with a memory for storing a program or instructions that, when executed by the processor, cause the apparatus to perform the method of any one of the flows shown in FIG. 17.

[0229] In the embodiments of the present application, the processor can be a general processor, a digital signal processor, an application specific integrated circuit, a field programmable gate array or other programmable logic device, a discrete gate or transistor logic device, a discrete hardware component, and can implement or execute the disclosed methods, steps and logic block diagrams in the embodiments of the present application. The general processor can be a microprocessor or any conventional processor. The steps of the method disclosed in conjunction with the embodiments of the present application can be directly embodied as hardware processor execution or executed by a combination of hardware and software modules in the processor.

[0230] In the embodiments of the present application, the memory can be a non-volatile memory such as a hard disk drive (HDD) or a solid-state drive (SSD), and can also be a volatile memory such as a random-access memory (RAM). The memory can be any other medium capable of carrying or storing desired program code in the form of instructions or data structures and capable of being accessed by a computer, but is not limited to this. The memory in the embodiments of the present application can also be a circuit or any other device capable of realizing a storage function, for storing program instructions and / or data.

[0231] The embodiments of the present application also provide another detection device, which includes a processor and a memory, wherein the memory is configured to store a computer program, and the processor is configured to execute the computer program, so that the device executes the detection method obtained by the above-mentioned FIG. 17 and combinations thereof.

[0232] The embodiments of the present application also provide a vehicle, which comprises the detection device 310 or the detection device 1800. Optionally, the related description of the vehicle can refer to the description of the vehicle mentioned above, and will not be repeated here.

[0233] The embodiments of the present application also provide a terminal device, which comprises the detection device 310 or the detection device 1800. Optionally, the related description of the terminal device can refer to the description of the terminal device mentioned above, and will not be repeated here.

[0234] The embodiments of the present application also provide a detection system, which comprises the detection device 310. Optionally, the detection system comprises a target.

[0235] The embodiments of the present application provide a computer program, which is used for executing the detection method obtained by the above-mentioned Fig. 17 and combinations thereof when executed by a processor.

[0236] The embodiments of the present application provide a computer program product, which comprises: a computer program (also can be called code, or instruction); when the computer program is executed, the computer program makes a computer execute the detection method obtained by the above-mentioned Fig. 17 and combinations thereof.

[0237] The embodiments of the present application also provide a computer readable storage medium, which stores instructions, when the instructions are executed on at least one processor, the detection method obtained by the above-mentioned Fig. 17 and combinations thereof is realized.

[0238] Those skilled in the art can understand that all or part of the steps of the above-mentioned embodiments can be completed by hardware, or by program instructing relevant hardware to complete, and the program can be stored in a computer readable storage medium, and the storage medium mentioned above can be a read-only memory, a magnetic disk or an optical disk.

Claims

A detection device, characterized in that The detection device is applied to a first vehicle, and comprises a first processing unit and at least two antennas. The at least two antennas are arranged on a vehicle body of the first vehicle, and the first processing unit is connected with the at least two antennas respectively. Each of the at least two antennas is configured to receive a signal and output an electric signal. The first processing unit is configured to determine a positional relationship between a target and the first vehicle based on a first electric signal output by some or all of the at least two antennas. The probe device according to claim 1, characterized in that The positions of the at least two antennas on the first vehicle are determined by a vehicle model of the first vehicle. The probe device according to claim 1 or 2, characterized in that The at least two antennas comprise two antennas arranged on side doors of the first vehicle. The probe device according to claim 1 or 2, characterized in that The at least two antennas comprise four antennas arranged on a front windshield, a left front quarter window, a right front quarter window and a rear windshield of the first vehicle respectively. The probe device according to claim 4, characterized in that The at least two antennas further comprise a first antenna arranged on a roof of the first vehicle. The probe device according to claim 1 or 2, characterized in that The at least two antennas comprise five antennas arranged on a left side of a front bumper, a right side of the front bumper, a left side of a rear bumper, a right side of the rear bumper and the roof of the first vehicle respectively. The probe device according to any one of claims 1 to 6, characterized in that The detection device further comprises a switch unit configured to connect the first processing unit with the at least two antennas, and the switch unit is configured to control the on or off of signal transmission of one or more of the at least two antennas. The probe device according to claim 7, characterized in that The at least two antennas are divided into a plurality of antenna combinations, and each antenna combination comprises at least one antenna. The first processing unit is further configured to control the switch unit so that the plurality of antenna combinations are connected with the first processing unit in a first order. The probe device according to any one of claims 1 to 8, characterized in that The detection device further comprises at least one second processing unit and an antenna connected with the second processing unit, the antenna connected with the second processing unit is configured to receive a signal and output a second electric signal, and the second processing unit is configured to determine a first distance between the antenna connected with the second processing unit and the target based on the second electric signal. The first processing unit is further configured to determine the positional relationship between the target and the first vehicle based on the first distance determined by the at least one second processing unit and / or the first electric signal. The first processing unit is specifically configured to control the first vehicle to perform a first operation based on the positional relationship between the target and the first vehicle. The probe device according to any one of claims 1 to 9, characterized in that The first processing unit is configured to control the first vehicle to perform a first operation when a signal strength of the first electric signal is greater than a first threshold. A method of detecting, characterized in that The method is applied to a detection device comprising a first processing unit and at least two antennas, the first processing unit is connected with the at least two antennas respectively, and the at least two antennas are arranged on a vehicle body of a first vehicle. Each of the at least two antennas receives a signal and outputs an electric signal. The first processing unit acquires a first electric signal output by a target antenna of the at least two antennas, the target antenna being some or all of the at least two antennas. The first processing unit is configured to determine a positional relationship between a target and the first vehicle based on a first electric signal output by some or all of the at least two antennas. The first processing unit determines a positional relationship between the target and the first vehicle based on the first electric signal. The method of claim 11, wherein The detection device further comprises a switch unit, which is configured to connect the first processing unit and the at least two antennas. The first processing unit acquires the first electric signal output by part of or all of the at least two antennas, including: The first processing unit sends a first control signal to the switch unit, which is configured to control the switching state of the switch unit, so that the target antenna is connected to the first processing unit. The first processing unit acquires the first electric signal output by the target antenna. The method of claim 12, wherein The at least two antennas are divided into a plurality of antenna combinations, each of which comprises at least one antenna; and the first control signal is configured to instruct the switch unit to connect the plurality of antenna combinations to the first processing unit in a first order. The method according to claim 12 or 13, characterized in that The detection device further comprises at least one second processing unit and an antenna connected to the second processing unit; and the method further comprises: The first processing unit and the at least one second processing unit acquire the electric signal output by the antenna in a first polling order; The second processing unit determines a first distance between the antenna connected to the second processing unit and the first vehicle based on the acquired electric signal. The first processing unit determines a positional relationship between the target and the first vehicle based on the first electric signal, including: The first processing unit determines the positional relationship between the target and the first vehicle based on the first distance determined by the at least one second processing unit and / or the first electric signal. A terminal device, characterized by comprising: The terminal device comprises the detection device of any one of claims 1-10. A vehicle characterized by comprising: The vehicle comprises the detection device of any one of claims 1-10, or the terminal device of claim 15. A computer-readable storage medium, characterized by, The computer-readable storage medium is configured to store a computer program, which is executed to perform the method of any one of claims 11-14. A computer program product, characterized in that The computer program product comprises instructions, which, when executed by a processor, cause the method of any one of claims 11-14 to be implemented.

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