Channel door identification method, device and system based on radio frequency identification

Abstract

The invention discloses an access door identification method, device and system based on radio frequency identification, and belongs to the technical field of radio frequency identification. The method comprises the following steps: controlling a radio frequency signal to scan along a channel direction of a channel gate; recording a scanning angle corresponding to a tag signal returned by the radio frequency tag based on the radio frequency signal; and identifying the moving direction of the article attached with the radio frequency tag according to the change of the scanning angle corresponding to the plurality of tag signals returned by the radio frequency tag. According to the method, key space positioning information is provided for identification by acquiring the scanning angle corresponding to the tag signal returned by the radio frequency tag attached to the article based on the radio frequency signal, the change of the scanning angle corresponding to the plurality of tag signals is analyzed, the moving direction of the article can be accurately identified, the signal intensity change of the tag signal is combined, and the identification accuracy is improved. According to the invention, the warehouse-in and warehouse-out result of the article can be determined from a plurality of different dimensions, the situation of easy misjudgment caused by a single judgment factor is reduced, and the accuracy of article warehouse-in and warehouse-out identification is improved.

Description

Technical Field

[0001] The present application belongs to the field of radio frequency identification technology, and in particular, relates to a channel door identification method, device and system based on radio frequency identification. Background Art

[0002] With the rapid development of modern logistics and supply chain management, the efficiency and accuracy of warehouse management have become the key to corporate competitiveness. Radio Frequency Identification (RFID) technology, as an advanced automatic identification technology, has played an important role in the field of warehouse management.

[0003] In the related technology, the application of radio frequency identification is mainly to deploy an RFID activator at a certain distance inside and outside the warehouse door on the warehouse entrance channel. When the goods with RFID tags are stimulated by the RFID activators outside and inside the door in turn and communicate with the receiver, it can be determined that the goods are in the warehouse; conversely, it can be determined that the goods are out of the warehouse. However, if the speed of the items passing through the access control system is too fast, or the position of the tag is inappropriate, it may cause the signal reading to fail or be delayed, which is easy to cause misjudgment of the management of the entry and exit of the items. Summary of the invention

[0004] The present application aims to solve at least one of the technical problems existing in the prior art. To this end, the present application proposes a channel door identification method and device based on radio frequency identification to improve the accuracy of object entry and exit identification.

[0005] In a first aspect, the present application provides a channel door identification method based on radio frequency identification, wherein the channel door includes an antenna module, and the antenna module is used to transmit a radio frequency signal; the method includes:

[0006] Controlling the radio frequency signal to scan along the channel direction of the channel door;

[0007] Record and obtain the scanning angle corresponding to the tag signal returned by the radio frequency tag based on the radio frequency signal;

[0008] The moving direction of the object attached with the radio frequency tag is identified according to the change of the scanning angle corresponding to the multiple tag signals returned by the radio frequency tag.

[0009] According to the channel door identification method based on radio frequency identification of the present application, the radio frequency signal is controlled to scan along the channel direction of the channel door; the scanning angle corresponding to the tag signal returned by the radio frequency tag based on the radio frequency signal is recorded and obtained; the moving direction of the object attached with the radio frequency tag is identified according to the change of the scanning angle corresponding to the multiple tag signals returned by the radio frequency tag. The embodiment of the present application controls the radio frequency signal to scan along the channel direction of the channel door, performs a comprehensive detection of the objects passing through the channel door, records and obtains the scanning angle corresponding to the tag signal returned by the radio frequency signal based on the radio frequency signal of the radio frequency tag attached to the object, provides key spatial positioning information for identification, and can accurately identify the moving direction of the object by analyzing the changes in the scanning angles corresponding to the multiple tag signals, thereby determining whether the object is entering or leaving the warehouse, thereby improving the accuracy of identifying the entry and exit of the object.

[0010] According to one embodiment of the present application, the antenna module includes an antenna array composed of a plurality of antenna units; the antenna units are arranged along the passage direction of the passage door.

[0011] In this embodiment, an antenna array composed of multiple antenna units is adopted, and these antenna units are arranged in an orderly manner along the channel direction of the channel door, so that the antenna array can cover the channel more evenly, and the radiation direction of each antenna unit is combined with the adjacent antenna unit, which is conducive to realizing directional scanning of the radio frequency signal and optimizing the accuracy of object identification.

[0012] According to one embodiment of the present application, the antenna unit is correspondingly provided with a phase shifter and / or a digitally controlled attenuator.

[0013] According to one embodiment of the present application, controlling the radio frequency signal to scan along the channel direction of the channel gate includes:

[0014] Adjusting the phase of the signal transmitted by the antenna unit through the phase shifter to control the radio frequency signal to scan along the channel direction of the channel gate;

[0015] And / or, the amplitude of the signal transmitted by the antenna unit is adjusted by the digitally controlled attenuator to control the radio frequency signal to scan along the channel direction of the channel gate.

[0016] In this embodiment, the phase of the signal transmitted by the antenna unit can be independently adjusted by the phase shifter, and the wavefront shape and direction of the signal can be accurately controlled to achieve directional scanning of the radio frequency signal. The amplitude of the signal can be accurately controlled by the digitally controlled attenuator. By adjusting the amplitude of the signal of the antenna unit in different directions, the transmission angle of the radio frequency signal of the antenna array can also be adjusted, thereby achieving directional scanning of the radio frequency signal.

[0017] According to one embodiment of the present application, controlling the radio frequency signal to scan along the channel direction of the channel gate includes:

[0018] The movement of the antenna unit in the antenna module is controlled to control the radio frequency signal to scan along the channel direction of the channel door.

[0019] In this embodiment, by controlling the antenna unit in the antenna module to perform physical movement, the angle of the radio frequency signal emitted by the antenna module can be dynamically adjusted to achieve scanning of the radio frequency signal along the channel direction of the channel gate, thereby improving the accuracy of scanning control.

[0020] According to an embodiment of the present application, the step of identifying the moving direction of the object to which the radio frequency tag is attached according to the change in the scanning angle corresponding to the multiple tag signals returned by the radio frequency tag includes:

[0021] Get the acquisition time of each tag signal;

[0022] Determine the change of the scanning angle corresponding to each tag signal according to the acquisition time;

[0023] The moving direction of the object attached with the radio frequency tag is identified according to the change of the scanning angle corresponding to each tag signal.

[0024] In this embodiment, by obtaining the acquisition time of each tag signal, a timestamp is provided for the tag signal, and the change of the scanning angle corresponding to each tag signal is determined based on these timestamps. By comparing the scanning angles corresponding to the tag signals at different time points, the dynamic change of the scanning angle corresponding to the tag signal over time can be accurately tracked, so that the moving direction of the object can be accurately identified.

[0025] According to one embodiment of the present application, the method further includes:

[0026] Record and obtain the signal strength corresponding to the tag signal returned by the radio frequency tag based on the radio frequency signal;

[0027] The entry and exit results of the object through the passage of the passage door are determined according to the movement direction of the object and the changes in the signal strengths corresponding to the multiple tag signals.

[0028] In this embodiment, by recording the signal strength of each tag signal, which reflects the distance between the RFID tag and the antenna module, the change in signal strength reflects the change in the distance between the RFID tag and the antenna module. Combining the change in signal strength and the moving direction of the item, the entry and exit results of the item can be determined from multiple different dimensions, reducing the possibility of misjudgment caused by a single judgment factor and improving the accuracy of the entry and exit judgment of the item.

[0029] According to an embodiment of the present application, determining the entry and exit result of the object through the passage of the passage door according to the movement direction of the object and the change of the signal strength corresponding to the multiple tag signals includes:

[0030] In the case where the changes in the signal strengths corresponding to the multiple tag signals conform to the first preset change relationship, if the moving direction of the object is the storage direction, determining that the storage-in and -out result of the object is storage;

[0031] When the change of the signal strength corresponding to the plurality of tag signals conforms to the second preset change relationship, if the moving direction of the object is the outbound direction, it is determined that the in-and-out result of the object is outbound.

[0032] In this embodiment, by setting preset relationships of signal strength changes, when the actually measured signal strength changes match these preset relationships, the entry or exit judgment of the item can be made based on the moving direction of the item. This dual verification mechanism based on signal strength changes and moving direction comprehensively analyzes the strength changes of the RFID tag signal and the moving direction of the item, thereby improving the accuracy of the entry and exit judgment of the item.

[0033] According to an embodiment of the present application, determining the entry and exit result of the object through the passage of the passage door according to the movement direction of the object and the change of the signal strength corresponding to the multiple tag signals includes:

[0034] Get the acquisition time of each tag signal;

[0035] Determine the change of signal strength corresponding to multiple tag signals at the same scanning angle according to the acquisition time;

[0036] The storage and outgoing results of the items are determined according to the moving direction of the items and the changes in the signal strengths corresponding to the multiple tag signals at the same scanning angle.

[0037] In this embodiment, by obtaining the acquisition time of each tag signal, these acquisition times are used to determine the signal strength changes corresponding to multiple tag signals obtained at different time points at the same scanning angle, which can reveal the signal strength change trend of the object at a specific position in the channel door, providing key information for judging the movement status of the object. Combined with the movement direction of the object and the signal strength change at the same scanning angle, it is comprehensively judged whether the object is entering or leaving the warehouse, thereby improving the accuracy of the judgment of the entry and exit of the object.

[0038] In a second aspect, the present application provides a channel door identification device based on radio frequency identification, wherein the channel door includes an antenna module, and the antenna module is used to transmit a radio frequency signal; the device includes:

[0039] A control module, used for controlling the radio frequency signal to scan along the channel direction of the channel door;

[0040] A recording module, used for recording and obtaining a scanning angle corresponding to a tag signal returned by the radio frequency tag based on the radio frequency signal;

[0041] The identification module is used to identify the moving direction of the object attached with the radio frequency tag according to the change of the scanning angle corresponding to the multiple tag signals returned by the radio frequency tag.

[0042] According to the channel door identification device based on radio frequency identification of the present application, the radio frequency signal is controlled to scan along the channel direction of the channel door; the scanning angle corresponding to the tag signal returned by the radio frequency tag based on the radio frequency signal is recorded and obtained; the moving direction of the object attached with the radio frequency tag is identified according to the change of the scanning angle corresponding to the multiple tag signals returned by the radio frequency tag. The embodiment of the present application controls the radio frequency signal to scan along the channel direction of the channel door, performs a comprehensive detection of the objects passing through the channel door, records and obtains the scanning angle corresponding to the tag signal returned by the radio frequency signal based on the radio frequency signal of the radio frequency tag attached to the object, provides key spatial positioning information for identification, and can accurately identify the moving direction of the object by analyzing the changes in the scanning angles corresponding to the multiple tag signals, thereby determining whether the object is entering or leaving the warehouse, thereby improving the accuracy of identifying the entry and exit of the object.

[0043] In a third aspect, the present application provides a channel door identification system based on radio frequency identification, comprising at least one channel door and a controller, wherein the channel door comprises an antenna module;

[0044] The antenna module is used to transmit radio frequency signals;

[0045] The controller is used to implement the channel door identification method based on radio frequency identification as described in the first aspect above.

[0046] In a fourth aspect, the present application provides an electronic device comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein when the processor executes the computer program, the channel door identification method based on radio frequency identification as described in the first aspect above is implemented.

[0047] In a fifth aspect, the present application provides a non-transitory computer-readable storage medium having a computer program stored thereon, and when the computer program is executed by a processor, the channel door identification method based on radio frequency identification as described in the first aspect above is implemented.

[0048] In a sixth aspect, the present application provides a chip, comprising a processor and a communication interface, wherein the communication interface is coupled to the processor, and the processor is used to run a program or instruction to implement the channel door identification method based on radio frequency identification as described in the first aspect above.

[0049] In a seventh aspect, the present application provides a computer program product, including a computer program, which, when executed by a processor, implements the channel door identification method based on radio frequency identification as described in the first aspect above.

[0050] The above one or more technical solutions in the embodiments of the present application have at least one of the following technical effects:

[0051] According to the channel door identification method based on radio frequency identification of the present application, the radio frequency signal is controlled to scan along the channel direction of the channel door; the scanning angle corresponding to the tag signal returned by the radio frequency tag based on the radio frequency signal is recorded and obtained; the moving direction of the object attached with the radio frequency tag is identified according to the change of the scanning angle corresponding to the multiple tag signals returned by the radio frequency tag. The embodiment of the present application controls the radio frequency signal to scan along the channel direction of the channel door, performs a comprehensive detection of the objects passing through the channel door, records and obtains the scanning angle corresponding to the tag signal returned by the radio frequency signal based on the radio frequency signal of the radio frequency tag attached to the object, provides key spatial positioning information for identification, and can accurately identify the moving direction of the object by analyzing the changes in the scanning angles corresponding to the multiple tag signals, thereby determining whether the object is entering or leaving the warehouse, thereby improving the accuracy of identifying the entry and exit of the object.

[0052] Furthermore, in some embodiments, by adopting an antenna array composed of multiple antenna units, these antenna units are arranged in an orderly manner along the channel direction of the channel door, so that the antenna array can cover the channel more evenly, and the radiation direction of each antenna unit is combined with the adjacent antenna units, which is conducive to realizing directional scanning of radio frequency signals and optimizing the accuracy of object identification.

[0053] Furthermore, in some embodiments, the phase of the signal transmitted by the antenna unit can be independently adjusted by the phase shifter, and the wavefront shape and direction of the signal can be accurately controlled to achieve directional scanning of the RF signal. The amplitude of the signal can be accurately controlled by the digitally controlled attenuator, and by adjusting the amplitude of the signal of the antenna unit in different directions, the transmission angle of the RF signal of the antenna array can also be adjusted, thereby achieving directional scanning of the RF signal.

[0054] Furthermore, in some embodiments, by controlling the physical movement of the antenna unit in the antenna module, the angle of the radio frequency signal emitted by the antenna module can be dynamically adjusted to achieve scanning of the radio frequency signal along the channel direction of the channel gate, thereby improving the accuracy of scanning control.

[0055] Furthermore, in some embodiments, by obtaining the acquisition time of each tag signal, a timestamp is provided for the tag signal, and the change of the scanning angle corresponding to each tag signal is determined based on these timestamps. By comparing the scanning angles corresponding to the tag signals at different time points, the dynamic changes of the scanning angles corresponding to the tag signals over time can be accurately tracked, so that the movement direction of the object can be accurately identified.

[0056] Furthermore, in some embodiments, by recording the signal strength of each tag signal, which reflects the distance between the RFID tag and the antenna module, the change in signal strength reflects the change in the distance between the RFID tag and the antenna module. Combining the change in signal strength and the moving direction of the item, the entry and exit results of the item can be determined from multiple different dimensions, reducing the possibility of misjudgment caused by a single judgment factor and improving the accuracy of the entry and exit judgment of the item.

[0057] Furthermore, in some embodiments, by setting preset relationships of signal strength changes, when the actual measured signal strength changes match these preset relationships, it is possible to make a judgment on whether to enter or exit the warehouse based on the direction of movement of the item. This dual verification mechanism based on signal strength changes and moving direction comprehensively analyzes the strength changes of the RFID tag signal and the moving direction of the item, thereby improving the accuracy of the judgment on whether to enter or exit the warehouse.

[0058] Furthermore, in some embodiments, by obtaining the acquisition time of each tag signal, and using these acquisition times to determine the signal strength changes corresponding to multiple tag signals obtained at different time points at the same scanning angle, the signal strength change trend of the object at a specific position in the channel door can be revealed, providing key information for judging the movement status of the object. Combined with the movement direction of the object and the signal strength change at the same scanning angle, a comprehensive judgment is made as to whether the object is entering or leaving the warehouse, thereby improving the accuracy of the judgment of entering and leaving the warehouse.

[0059] Additional aspects and advantages of the present application will be given in part in the description below, and in part will become apparent from the description below, or will be learned through the practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0060] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0061] Figure 1is a schematic diagram of the architecture of the radio frequency gate system provided in an embodiment of the present application;

[0062] Figure 2 It is a flow chart of a channel door identification method based on radio frequency identification provided in an embodiment of the present application;

[0063] Figure 3 is a schematic diagram of the position of the passage door provided in an embodiment of the present application;

[0064] Figure 4 is a schematic diagram of the structure of the antenna module provided in an embodiment of the present application;

[0065] Figure 5 is a schematic diagram of a radio frequency signal scanning angle provided in an embodiment of the present application;

[0066] Figure 6 This is one of the examples of the process of moving an item with a radio frequency tag attached provided in the embodiment of the present application;

[0067] Figure 7 This is the second example of the process of moving an item with a radio frequency tag attached provided in the embodiment of the present application;

[0068] Figure 8 This is a schematic diagram of the change in signal strength corresponding to the tag signal during the outbound delivery process provided by the embodiment of the present application;

[0069] Fig. 9 This is the third example of the process of moving an item with a radio frequency tag attached provided in the embodiment of the present application;

[0070] Fig.10 This is a schematic diagram of the change in signal strength corresponding to the tag signal during the warehousing process provided by the embodiment of the present application;

[0071] Fig.11 This is the fourth example of the process of moving an item with a radio frequency tag attached provided in the embodiment of the present application;

[0072] Fig.12 It is a structural schematic diagram of a channel door identification device based on radio frequency identification provided in an embodiment of the present application;

[0073] Fig.13 It is a schematic diagram of the structure of an electronic device provided in an embodiment of the present application. DETAILED DESCRIPTION

[0074] The following will be combined with the drawings in the embodiments of the present application to clearly describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments in the present application belong to the scope of protection of this application.

[0075] The terms "first", "second", etc. in the specification and claims of the present application are used to distinguish similar objects, and are not used to describe a specific order or sequence. It should be understood that the data used in this way can be interchangeable under appropriate circumstances, so that the embodiments of the present application can be implemented in an order other than those illustrated or described here, and the objects distinguished by "first", "second", etc. are generally of one type, and the number of objects is not limited. For example, the first object can be one or more. In addition, "and / or" in the specification and claims represents at least one of the connected objects, and the character " / " generally indicates that the objects associated with each other are in an "or" relationship.

[0076] RFID technology uses radio waves to automatically identify tags attached to items, enabling rapid tracking and management of items. Items with radio frequency tags can be checked for assets by passing them through radio frequency gates or by manual scanning, enabling identification and tracking of items, as well as management of outbound and inbound shipments. Figure 1 As shown in the figure, the RFID radio frequency door system mainly includes antenna module, read-write module (reader / exciter), system high layer, LED display screen, sound and light alarm and other parts. When an item carrying a radio frequency tag passes through the channel, the radio frequency signal is transmitted through the antenna, and the chip and antenna of the radio frequency tag will generate an induced current and be activated, and the read-write module can read the information in the radio frequency tag. Among them, the system high layer can be a controller, which is responsible for processing the data collected by the read-write module and performing logical judgments, such as whether to open the door, record data, etc. The read-write module contains electronic circuits for generating control signals and modulating radio frequency signals, and then transmits the radio frequency signals through the antenna module. The read-write module is also responsible for receiving the signals reflected from the radio frequency tag and extracting useful information from them. The antenna module is a passive component in the RFID radio frequency door system, which receives the radio frequency signal emitted by the read-write module and radiates the radio frequency signal into space to form a certain electromagnetic field. When the radio frequency tag enters this electromagnetic field, the antenna on the radio frequency tag receives energy and activates the circuit of the radio frequency tag, enabling it to send information back to the antenna module.

[0077] In warehouse management, the application of radio frequency identification is mainly through the deployment of an activator at a certain distance inside and outside the warehouse door on the warehouse entry channel. When the goods with radio frequency tags are stimulated by the activators outside and inside the door in turn and communicate with the receiver, it can be determined that the goods are in the warehouse; conversely, it can be determined that the goods are out of the warehouse. However, if the asset passes through the access control system too fast, or the position of the radio frequency tag is inappropriate, it may also cause signal reading failure or delay. In this case, even if the asset is actually out of the warehouse, because the radio frequency tag is first read by the activator outside the door, the system may mistakenly record it as entering the warehouse. This method is prone to misjudgment of the entry and exit management of items.

[0078] The present application takes into account that if it is possible to control the radio frequency signal to scan along the channel direction of the channel door, conduct a comprehensive inspection of the items passing through the channel door, record and obtain the scanning angle corresponding to the tag signal returned by the radio frequency signal based on the radio frequency tag attached to the item, provide key spatial positioning information for identification, and by analyzing the changes in scanning angles corresponding to multiple tag signals, identify the moving direction of the item and determine whether the item is entering or leaving the warehouse, it is expected to solve the problem of easy misjudgment in the management of item entry and exit in the prior art.

[0079] The following, in conjunction with the accompanying drawings, describes in detail the channel door identification method, device and system based on radio frequency identification provided by the embodiments of the present application through specific embodiments and their application scenarios.

[0080] Among them, the channel door identification method based on radio frequency identification can be applied to a terminal, and can be specifically executed by hardware or software in the terminal.

[0081] The terminal includes, but is not limited to, a portable communication device such as a mobile phone or tablet computer with a touch-sensitive surface (e.g., a touch screen display and / or a touch pad). It should also be understood that in some embodiments, the terminal may not be a portable communication device, but a desktop computer with a touch-sensitive surface (e.g., a touch screen display and / or a touch pad).

[0082] In the following various embodiments, a terminal including a display and a touch-sensitive surface is described. However, it should be understood that the terminal may include one or more other physical user interface devices such as a physical keyboard, a mouse and a joystick.

[0083] The embodiment of the present application provides a channel door identification method based on radio frequency identification. The execution subject of the channel door identification method based on radio frequency identification can be an electronic device or a functional module or functional entity in the electronic device that can implement the channel door identification method based on radio frequency identification. The electronic devices mentioned in the embodiment of the present application include but are not limited to mobile phones, tablet computers, computers, channel door controllers, servers, etc. The channel door identification method based on radio frequency identification provided in the embodiment of the present application is explained below using an electronic device as an example of the execution subject.

[0084] like Figure 2 As shown, the channel door identification method based on radio frequency identification includes: step 210, step 220 and step 230.

[0085] Step 210: Control the radio frequency signal to scan along the channel direction of the channel gate.

[0086] In the embodiment of the present application, the access door is a door system using RFID technology, also known as a radio frequency door or an RFID safety door. Figure 1As shown, it may include antenna module, read / write module, system high layer, LED display, sound and light alarm and other parts. Among them, the system high layer can be a controller, which is responsible for processing the data collected by the read / write module and performing logical judgment, such as whether to open the door, record data, etc. The read / write module contains electronic circuits for generating control signals and modulating radio frequency signals, and then transmitting the radio frequency signals through the antenna module. The read / write module is also responsible for receiving the signals reflected back from the radio frequency tag and extracting useful information from them. The antenna module is a passive component in the RFID radio frequency door system, which receives the radio frequency signal emitted by the read / write module and radiates the radio frequency signal into space to form a certain electromagnetic field. When the radio frequency tag enters this electromagnetic field, the antenna on the radio frequency tag receives energy and activates the circuit of the radio frequency tag, enabling it to send information back to the antenna module.

[0087] like Figure 3 As shown, in warehouse management, a passage door can be set in the passage for entering and exiting the warehouse. Two passage doors can be set, located on both sides of the passage, or one passage door can be set, located on either side of the passage. When an item with a radio frequency tag moves in the passage and passes through the passage door, the antenna on the radio frequency tag receives energy and activates the circuit of the radio frequency tag, and the information stored in the radio frequency tag can be sent to the antenna module through a signal. By setting a single-sided passage door, compared with the design of multi-sided passage doors in the prior art, costs are reduced and asset utilization is increased.

[0088] In the embodiment of the present application, the channel direction may be the direction of entering or exiting the warehouse, and the radio frequency signal may be controlled to scan along the channel direction of the channel door. For example, multiple antenna units may be installed at different positions of the channel door, and the activation sequence and time of each antenna unit may be controlled to achieve the scanning of the radio frequency signal along the channel direction of the channel door; the frequency, phase or amplitude of the radio frequency signal may also be modulated, so that the radio frequency signal is propagated in a specific direction according to the propagation characteristics of the radio frequency signal, so as to achieve the scanning of the radio frequency signal along the channel direction of the channel door.

[0089] In some embodiments, the antenna module includes an antenna array composed of a plurality of antenna units; the antenna units are arranged along the channel direction of the channel door. By controlling the activation sequence and time of each antenna unit, the RF signal can be scanned along the channel direction of the channel door.

[0090] In this embodiment, an antenna array composed of multiple antenna units is adopted, and these antenna units are arranged in an orderly manner along the channel direction of the channel door, so that the antenna array can cover the channel more evenly, and the radiation direction of each antenna unit is combined with the adjacent antenna unit, which is conducive to realizing directional scanning of the radio frequency signal and optimizing the accuracy of object identification.

[0091] In some embodiments, the antenna units are correspondingly provided with phase shifters and / or digitally controlled attenuators.

[0092] In this embodiment, a phase shifter is an electronic component or device that can change the phase of a signal without changing its amplitude. A phase shifter can change the phase of a signal by adjusting parameters in a circuit, such as capacitors, inductors, or specific electronic components. A digitally controlled attenuator is an electronic component or device that can precisely control the attenuation of a signal amplitude. A digitally controlled attenuator adjusts the amount of attenuation of a signal by changing the resistance in the circuit or using switches.

[0093] In some embodiments, controlling the radio frequency signal to scan along the channel direction of the channel gate includes:

[0094] The phase of the signal transmitted by the antenna unit is adjusted by a phase shifter to control the radio frequency signal to scan along the channel direction of the channel gate;

[0095] And / or, the amplitude of the signal transmitted by the antenna unit is adjusted by a digitally controlled attenuator to control the radio frequency signal to scan along the channel direction of the channel gate.

[0096] In this embodiment, the phase of the signal transmitted by the antenna unit can be adjusted by a phase shifter, thereby controlling the propagation direction of the radio frequency signal and realizing scanning along the direction of the channel gate. Figure 4 As shown, the antenna module may include multiple antenna units, and a phase shifter may be installed between the antenna unit and the read / write module. By controlling the software or hardware, the phase difference of the phase shifter is dynamically adjusted so that the synthetic beam of the radio frequency signal emitted by each antenna unit moves back and forth along the direction of the channel gate, thereby realizing scanning of different areas of the channel gate. Each antenna unit may correspond to a phase shifter.

[0097] In this embodiment, the amplitude of the signal transmitted by the antenna unit can be changed by a digitally controlled attenuator, thereby controlling the intensity distribution of the radio frequency signal, thereby affecting the scanning range and direction of the radio frequency signal. Specifically, the antenna module may include multiple antenna units, and a digitally controlled attenuator is installed in front of the antenna unit. By adjusting the attenuation of the radio frequency signal transmitted by each antenna unit, the signal amplitude of the radio frequency signal is changed. By adjusting the digitally controlled attenuators in front of different antenna units, signal coverage areas of different strengths can be formed, and the signal strength of each antenna unit can be dynamically adjusted to achieve scanning of different areas of the channel door. Among them, each antenna unit can correspond to a digitally controlled attenuator. For example, the antenna module includes 4 antenna units, and a digitally controlled attenuator is arranged in front of each antenna unit. When the amplitude of the radio frequency signal of the four antenna units is adjusted to 1, 2, 2, 1, the corresponding scanning angle is 0°, when the amplitude of the radio frequency signal of the four antenna units is adjusted to 2, 2, 1, 1, the corresponding scanning angle is -40°, and when the amplitude of the radio frequency signal of the four antenna units is adjusted to 1, 1, 2, 2, the corresponding scanning angle is 40°.

[0098] In some embodiments, the phase shifter and the digitally controlled attenuator can be used in combination to more finely control the scanning mode of the RF signal. For example, the main scanning direction of the RF signal can be controlled by the phase shifter, and the coverage intensity of the signal can be adjusted by the digitally controlled attenuator to optimize the scanning effect and coverage range. This combination method can realize more complex scanning modes, such as sector scanning, regional focus scanning, etc., to meet different application requirements.

[0099] In this embodiment, the phase of the signal transmitted by the antenna unit can be independently adjusted by the phase shifter, and the wavefront shape and direction of the signal can be accurately controlled to achieve directional scanning of the radio frequency signal. The amplitude of the signal can be accurately controlled by the digitally controlled attenuator. By adjusting the amplitude of the signal of the antenna unit in different directions, the transmission angle of the radio frequency signal of the antenna array can also be adjusted, thereby achieving directional scanning of the radio frequency signal.

[0100] In some embodiments, the antenna module may include a single antenna unit or an antenna array composed of multiple antenna units, and the movement of the antenna unit in the antenna module may be controlled to control the radio frequency signal to scan along the channel direction of the channel door. For example, the antenna unit may be controlled to rotate along the channel direction by a mechanical device to achieve scanning of the radio frequency signal.

[0101] In this embodiment, by controlling the antenna unit in the antenna module to perform physical movement, the angle of the radio frequency signal emitted by the antenna module can be dynamically adjusted to achieve scanning of the radio frequency signal along the channel direction of the channel gate, thereby improving the accuracy of scanning control.

[0102] Step 220: Record and obtain the scanning angle corresponding to the tag signal returned by the RF tag based on the RF signal.

[0103] In an embodiment of the present application, the radio frequency signal can be controlled to scan along the channel direction of the channel door, for example, a scanning cycle is set within a preset range, and the scanning angle can be adjusted for each scan within a scanning cycle, for example, 10°, 20°, 50°, etc. each time, and each scanning angle can correspond to a scanning range. If there is a radio frequency tag within the scanning range, the antenna on the radio frequency tag receives energy and activates the circuit of the radio frequency tag, so that the radio frequency tag can send a signal to the antenna module, and at this time, the scanning angle of the radio frequency signal corresponding to the tag signal returned by the radio frequency tag can be recorded. For example, when the scanning angle of the radio frequency signal is 20°, the tag signal returned by the radio frequency tag is received, and the scanning angle corresponding to the tag signal can be recorded as 20°.

[0104] Take an example to illustrate the scanning angle recording process, such as Figure 5 As shown, in this example, the RF signal can be controlled to scan along the channel direction of the channel gate. When the scanning angle is 0°, the scanning direction is perpendicular to the channel direction. The maximum scanning angle toward one end of the channel direction is 40°, and the maximum scanning angle toward the other end of the channel direction is -40°. That is, the scanning direction when the scanning angle is 0° is perpendicular to the channel direction as a reference, and the scanning is performed within the interval of [-40°, 40°]. In this example, three scanning angles can be included, namely -40°, 0° and 40°, and each scanning angle corresponds to a scanning range, such as Figure 5 As shown in the elliptical area in the figure. If the tag signal returned by the RFID tag is received when the scanning angle of the RFID signal is 40°, the scanning angle corresponding to the tag signal is recorded as 40°. Of course, those skilled in the art can set other scanning angle intervals and other scanning angles according to actual conditions, and the embodiments of the present application are not limited to this.

[0105] Step 230: Identify the moving direction of the object attached with the radio frequency tag according to the change of the scanning angle corresponding to the multiple tag signals returned by the radio frequency tag.

[0106] In the embodiment of the present application, multiple tag signals returned by the same radio frequency tag can be obtained, and the moving direction of the object can be identified according to the changes in scanning angles corresponding to these tag signals.

[0107] Specifically, Figure 6As shown, when an item with an RFID tag moves from position A to position B to position C, the RFID signal is controlled to scan along the channel direction of the channel door, and multiple tag signals returned by the RFID tag can be received when the item passes through these positions. It can be seen that the scanning angle corresponding to the tag signal when the item is at position A is 40°, the scanning angle corresponding to the tag signal when the item is at position B is 0°, and the scanning angle corresponding to the tag signal when the item is at position C is -40°. According to the receiving order of these tag signals, the scanning angle changes from 40° to 0°, and then to -40°. According to the change of the scanning angle, it can be determined that the moving direction of the item is from position A to position C via position B, and the corresponding moving direction is the warehousing direction. On the contrary, if the scanning angle corresponding to the first received tag signal is -40°, the scanning angle corresponding to the second received tag signal is 0°, and the scanning angle corresponding to the last received tag signal is 40°, then the scanning angle changes from -40° to 0°, and then to 40°. Based on the change in the scanning angle, it can be determined that the moving direction of the item is from position C to position A via position B, and the corresponding moving direction is the direction of exit from the warehouse.

[0108] According to the channel door identification method based on radio frequency identification of the present application, the radio frequency signal is controlled to scan along the channel direction of the channel door; the scanning angle corresponding to the tag signal returned by the radio frequency tag based on the radio frequency signal is recorded and obtained; the moving direction of the object attached with the radio frequency tag is identified according to the change of the scanning angle corresponding to the multiple tag signals returned by the radio frequency tag. The embodiment of the present application controls the radio frequency signal to scan along the channel direction of the channel door, performs a comprehensive detection of the objects passing through the channel door, records and obtains the scanning angle corresponding to the tag signal returned by the radio frequency signal based on the radio frequency signal of the radio frequency tag attached to the object, provides key spatial positioning information for identification, and can accurately identify the moving direction of the object by analyzing the changes in the scanning angles corresponding to the multiple tag signals, thereby determining whether the object is entering or leaving the warehouse, thereby improving the accuracy of identifying the entry and exit of the object.

[0109] In some embodiments, identifying the moving direction of an object attached with a radio frequency tag according to changes in scanning angles corresponding to a plurality of tag signals returned by the radio frequency tag includes:

[0110] Get the acquisition time of each tag signal;

[0111] Determine the change of the scanning angle corresponding to each tag signal according to the acquisition time;

[0112] The moving direction of the object with the RFID tag attached is identified according to the change of the scanning angle corresponding to each tag signal.

[0113] In this embodiment, the acquisition time of each tag signal can be obtained, and the order of acquisition of each tag signal can be determined based on the acquisition time of each tag signal. Then, the change of the scanning angle corresponding to each tag can be determined according to the order of acquisition of each tag signal, and then the moving direction of the object attached with the RFID tag can be identified according to the change of the scanning angle corresponding to each tag signal.

[0114] In this embodiment, by obtaining the acquisition time of each tag signal, a timestamp is provided for the tag signal, and the change of the scanning angle corresponding to each tag signal is determined based on these timestamps. By comparing the scanning angles corresponding to the tag signals at different time points, the dynamic change of the scanning angle corresponding to the tag signal over time can be accurately tracked, so that the moving direction of the object can be accurately identified.

[0115] In some embodiments, the method further comprises:

[0116] Record and obtain the signal strength corresponding to the tag signal returned by the RF tag based on the RF signal;

[0117] According to the moving direction of the object and the change of the signal strength corresponding to the multiple tag signals, the entry and exit results of the object through the channel of the channel door are determined.

[0118] In this embodiment, the signal strength of the RF signal sensed by the RF tag is related to the distance between the RF tag and the antenna module. The farther the distance between the RF tag and the antenna module, the weaker the signal strength of the sensed RF signal, and thus the signal strength corresponding to the returned tag signal is also weaker.

[0119] like Figure 7 As shown, when the object with the RFID tag is at position 1 of the passage and moves close to the passage door in the passage, the relative distance between the RFID tag and the antenna module gradually decreases, and the signal strength of the RFID signal sensed by the RFID tag increases, and the growth rate becomes slower and slower. When approaching position 2, the signal strength of the RFID signal sensed near position 2 reaches the maximum, so that the signal strength corresponding to the tag signal returned by the RFID tag also increases, and the growth rate becomes slower and slower, as shown in FIG. Figure 8 As the item with the RFID tag continues to move in the channel and enters the vicinity of position 3, the relative distance between the RFID tag and the antenna module gradually increases, and the signal strength of the RFID signal sensed by the RFID tag decreases, and the decreasing speed becomes faster and faster, until the signal strength of the RFID signal decreases to the point where the RFID tag cannot be activated.

[0120] In this embodiment, if the change in the signal strength corresponding to the multiple tag signals increases first and then decreases, it means that the item with the radio frequency tag attached is passing through the channel and has passed through the channel door. In this case, if the moving direction of the item is the storage direction, it can be determined that the storage-in and storage-out result of the item is storage-in; if the moving direction of the item is the storage-out direction, it can be determined that the storage-in and storage-out result of the item is storage-out.

[0121] In this embodiment, by recording the signal strength of each tag signal, which reflects the distance between the RFID tag and the antenna module, the change in signal strength reflects the change in the distance between the RFID tag and the antenna module. Combining the change in signal strength and the moving direction of the item, the entry and exit results of the item can be determined from multiple different dimensions, reducing the possibility of misjudgment caused by a single judgment factor and improving the accuracy of the entry and exit judgment of the item.

[0122] In some embodiments, determining the entry and exit result of the object through the passage of the passage door according to the movement direction of the object and the change of the signal strength corresponding to the plurality of tag signals includes:

[0123] When the changes in the signal strengths corresponding to the plurality of tag signals conform to the first preset change relationship, if the moving direction of the item is the storage direction, determining that the storage-in and storage-out result of the item is storage-in;

[0124] When the change of the signal strength corresponding to the plurality of tag signals meets the second preset change relationship, if the moving direction of the object is the outbound direction, it is determined that the in-and-out result of the object is outbound.

[0125] In this embodiment, if Figure 7 As shown in the figure, the process of an item with an RFID tag moving from position 1 to position 3 in the passage is moving in the direction of leaving the warehouse. During the movement, the signal strength of the tag signal returned by the RFID tag changes as shown in the figure. Figure 8 As shown. Fig. 9 In the process of moving an item with an RFID tag from position 3 to position 1 in the passage, the item moves in the direction of storage. During the movement, the signal strength of the tag signal returned by the RFID tag changes as shown in the figure. Fig.10 As shown, it can be seen that the signal strength change of the tag signal returned by the RFID tag is different when the item attached with the RFID tag moves in the direction of entering the warehouse and moving in the direction of leaving the warehouse.

[0126] In this embodiment, the signal strength change relationship of the tag signal returned by the radio frequency tag during the movement of the item with the radio frequency tag in the corresponding direction of entering the warehouse can be pre-calibrated, and the signal strength change relationship can be used as the first preset change relationship; and the signal strength change relationship of the tag signal returned by the radio frequency tag during the movement of the item with the radio frequency tag in the corresponding direction of leaving the warehouse can be pre-calibrated, and the signal strength change relationship can be used as the second preset change relationship.

[0127] When the change in signal strength corresponding to multiple tag signals conforms to the first preset change relationship, if the moving direction of the item is the entry direction, the entry and exit result of the item is determined to be entry; when the change in signal strength corresponding to multiple tag signals conforms to the second preset change relationship, if the moving direction of the item is the exit direction, the entry and exit result of the item is determined to be exit.

[0128] In this embodiment, by setting preset relationships of signal strength changes, when the actually measured signal strength changes match these preset relationships, the entry or exit judgment of the item can be made based on the moving direction of the item. This dual verification mechanism based on signal strength changes and moving direction comprehensively analyzes the strength changes of the RFID tag signal and the moving direction of the item, thereby improving the accuracy of the entry and exit judgment of the item.

[0129] In some embodiments, determining the entry and exit result of the object through the passage of the passage door according to the movement direction of the object and the change of the signal strength corresponding to the plurality of tag signals includes:

[0130] Get the acquisition time of each tag signal;

[0131] Determine the change of signal strength corresponding to multiple tag signals at the same scanning angle according to the acquisition time;

[0132] The results of the item entering and leaving the warehouse are determined based on the movement direction of the item and the changes in the signal strength corresponding to multiple tag signals at the same scanning angle.

[0133] In this embodiment, the storage and retrieval results of the items can also be determined by combining the changes in the signal strengths corresponding to the multiple tag signals at the same scanning angle.

[0134] Specifically, the change in signal strength corresponding to multiple tag signals at the same scanning angle can be determined according to the acquisition time of each tag signal, such as Fig.11As shown, the tag signals are obtained at positions D, E, F, and G respectively. According to the acquisition time of the tag signal, the tag signal is first obtained at position D, followed by position E, then position F, and finally position G. The tag signals obtained at positions D and E are tag signals at the same scanning angle. By comparing the changes in the signal strength corresponding to the tag signals obtained at positions D and E, it can be seen that the signal strength is increased, so combined with the moving direction of the item as the warehousing direction, the result is warehousing. Of course, the tag signals obtained at positions F and G are tag signals at the same scanning angle. By comparing the changes in the signal strength corresponding to the tag signals obtained at positions F and G, it can be seen that the signal strength is reduced, which is opposite to the changes in the signal strength corresponding to the tag signals obtained at positions D and E, but combined with the moving direction of the item as the warehousing direction, the result is also warehousing.

[0135] According to this situation, it can be known that in order to determine the entry and exit results of items by combining the changes in the signal strengths corresponding to multiple tag signals at the same scanning angle, it is necessary to consider not only the changes in the signal strengths corresponding to the multiple tag signals, but also the size of the scanning angle. Specifically, the range of the scanning angle can be determined first. For example, when the scanning angle is in the range of 0° to 40°, if the signal strength corresponding to the tag signal at the scanning angle changes to increase, and the moving direction of the item is in the direction of storage, then the entry and exit result of the item can be determined to be storage; when the scanning angle is in the range of -40° to 0°, if the signal strength corresponding to the tag signal at the scanning angle changes to decrease, and the moving direction of the item is in the direction of storage, then the entry and exit result of the item can be determined to be storage. Of course, the relationship between the range of the scanning angle and the change in signal strength can be calibrated in advance, and the embodiments of the present application are not limited to this.

[0136] In this embodiment, by obtaining the acquisition time of each tag signal, these acquisition times are used to determine the signal strength changes corresponding to multiple tag signals obtained at different time points at the same scanning angle, which can reveal the signal strength change trend of the object at a specific position in the channel door, providing key information for judging the movement status of the object. Combined with the movement direction of the object and the signal strength change at the same scanning angle, it is comprehensively judged whether the object is entering or leaving the warehouse, thereby improving the accuracy of the judgment of the entry and exit of the object.

[0137] The channel door identification method based on radio frequency identification provided in the embodiment of the present application can be executed by a channel door identification device based on radio frequency identification. In the embodiment of the present application, the channel door identification method based on radio frequency identification is executed by a channel door identification device based on radio frequency identification as an example to illustrate the channel door identification device based on radio frequency identification provided in the embodiment of the present application.

[0138] The embodiment of the present application also provides a channel door identification device based on radio frequency identification, where the channel door includes an antenna module, and the antenna module is used to transmit radio frequency signals.

[0139] like Fig.12 As shown, the channel door identification device based on radio frequency identification includes:

[0140] The control module 1210 is used to control the radio frequency signal to scan along the channel direction of the channel door;

[0141] The recording module 1220 is used to record and obtain the scanning angle corresponding to the tag signal returned by the RF tag based on the RF signal;

[0142] The identification module 1230 is used to identify the moving direction of the object attached with the radio frequency tag according to the change of the scanning angle corresponding to the multiple tag signals returned by the radio frequency tag.

[0143] According to the channel door identification device based on radio frequency identification of the present application, the radio frequency signal is controlled to scan along the channel direction of the channel door; the scanning angle corresponding to the tag signal returned by the radio frequency tag based on the radio frequency signal is recorded and obtained; and the moving direction of the object attached with the radio frequency tag is identified according to the change of the scanning angle corresponding to the multiple tag signals returned by the radio frequency tag. The embodiment of the present application controls the radio frequency signal to scan along the channel direction of the channel door, performs a comprehensive detection of the objects passing through the channel door, records and obtains the scanning angle corresponding to the tag signal returned by the radio frequency signal based on the radio frequency signal of the radio frequency tag attached to the object, provides key spatial positioning information for identification, and can accurately identify the moving direction of the object by analyzing the changes in the scanning angles corresponding to the multiple tag signals, thereby determining whether the object is entering or leaving the warehouse, thereby improving the accuracy of identifying the entry and exit of the object.

[0144] In some embodiments, the control module 1210 is further configured to:

[0145] The phase of the signal transmitted by the antenna unit is adjusted by a phase shifter to control the radio frequency signal to scan along the channel direction of the channel gate;

[0146] And / or, the amplitude of the signal transmitted by the antenna unit is adjusted by a digitally controlled attenuator to control the radio frequency signal to scan along the channel direction of the channel gate.

[0147] In some embodiments, the control module 1210 is further configured to:

[0148] The movement of the antenna unit in the antenna module is controlled to control the radio frequency signal to scan along the channel direction of the channel door.

[0149] In some embodiments, the identification module 1230 is further configured to:

[0150] Get the acquisition time of each tag signal;

[0151] Determine the change of the scanning angle corresponding to each tag signal according to the acquisition time;

[0152] The moving direction of the object with the RFID tag attached is identified according to the change of the scanning angle corresponding to each tag signal.

[0153] In some embodiments, the identification module 1230 is further configured to:

[0154] Record and obtain the signal strength corresponding to the tag signal returned by the RF tag based on the RF signal;

[0155] According to the moving direction of the object and the change of the signal strength corresponding to the multiple tag signals, the entry and exit results of the object through the channel of the channel door are determined.

[0156] In some embodiments, the identification module 1230 is further configured to:

[0157] When the changes in the signal strengths corresponding to the plurality of tag signals conform to the first preset change relationship, if the moving direction of the item is the storage direction, determining that the storage-in and storage-out result of the item is storage-in;

[0158] When the change of the signal strength corresponding to the plurality of tag signals meets the second preset change relationship, if the moving direction of the object is the outbound direction, it is determined that the in-and-out result of the object is outbound.

[0159] In some embodiments, the identification module 1230 is further configured to:

[0160] Get the acquisition time of each tag signal;

[0161] Determine the change of signal strength corresponding to multiple tag signals at the same scanning angle according to the acquisition time;

[0162] The results of the item entering and leaving the warehouse are determined based on the movement direction of the item and the changes in the signal strength corresponding to multiple tag signals at the same scanning angle.

[0163] The channel door identification device based on radio frequency identification in the embodiment of the present application can be an electronic device, or a component in the electronic device, such as an integrated circuit or a chip. The electronic device can be a terminal, or other devices other than a terminal. Exemplarily, the electronic device can be a mobile phone, a tablet computer, a laptop computer, a palmtop computer, a vehicle-mounted electronic device, a mobile Internet device (Mobile Internet Device, MID), an augmented reality (augmented reality, AR) / virtual reality (virtual reality, VR) device, a robot, a wearable device, an ultra-mobile personal computer (ultra-mobile personal computer, UMPC), a netbook or a personal digital assistant (personal digital assistant, PDA), etc., and can also be a server, a network attached storage (Network Attached Storage, NAS), a personal computer (personal computer, PC), a television (television, TV), a teller machine or a self-service machine, etc., which is not specifically limited in the embodiment of the present application.

[0164] The RFID-based channel door identification device in the embodiment of the present application may be a device having an operating system. The operating system may be a Microsoft (Windows) operating system, an Android (Android) operating system, an IOS operating system, or other possible operating systems, which are not specifically limited in the embodiment of the present application.

[0165] In some embodiments, Fig.13 As shown, an embodiment of the present application further provides an electronic device 1300, including a processor 1301, a memory 1302, and a computer program stored in the memory 1302 and executable on the processor 1301. When the program is executed by the processor 1301, each process of the above-mentioned embodiment of the channel door identification method based on radio frequency identification is implemented, and the same technical effect can be achieved. To avoid repetition, it will not be described here.

[0166] It should be noted that the electronic devices in the embodiments of the present application include the above-mentioned mobile electronic devices and non-mobile electronic devices.

[0167] The embodiment of the present application also provides a channel door identification system based on radio frequency identification, including at least one channel door and a controller, the channel door including an antenna module;

[0168] An antenna module, used for transmitting radio frequency signals;

[0169] The controller is used to implement the various processes of the above-mentioned channel door identification method embodiment based on radio frequency identification, and can achieve the same technical effect. To avoid repetition, it is not repeated here. Among them, the controller can be the electronic device in the above-mentioned embodiment.

[0170] An embodiment of the present application also provides a non-transitory computer-readable storage medium, on which a computer program is stored. When the computer program is executed by a processor, the various processes of the above-mentioned channel door identification method embodiment based on radio frequency identification are implemented, and the same technical effect can be achieved. To avoid repetition, it will not be repeated here.

[0171] The processor is the processor in the electronic device in the above embodiment. The readable storage medium includes a computer readable storage medium, such as a computer read-only memory ROM, a random access memory RAM, a magnetic disk or an optical disk.

[0172] An embodiment of the present application also provides a computer program product, including a computer program, which implements the above-mentioned channel door identification method based on radio frequency identification when executed by a processor.

[0173] The processor is the processor in the electronic device in the above embodiment. The readable storage medium includes a computer readable storage medium, such as a computer read-only memory ROM, a random access memory RAM, a magnetic disk or an optical disk.

[0174] An embodiment of the present application further provides a chip, which includes a processor and a communication interface, the communication interface and the processor are coupled, and the processor is used to run programs or instructions to implement the various processes of the above-mentioned channel door identification method embodiment based on radio frequency identification, and can achieve the same technical effect. To avoid repetition, it will not be repeated here.

[0175] It should be understood that the chip mentioned in the embodiments of the present application can also be called a system-level chip, a system chip, a chip system or a system-on-chip chip, etc.

[0176] It should be noted that, in this article, the terms "comprise", "include" or any other variant thereof are intended to cover non-exclusive inclusion, so that the process, method, article or device including a series of elements includes not only those elements, but also includes other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise one..." do not exclude the presence of other identical elements in the process, method, article or device including the element. In addition, it should be pointed out that the scope of the methods and devices in the embodiments of the present application is not limited to performing functions in the order shown or discussed, and may also include performing functions in a substantially simultaneous manner or in reverse order according to the functions involved, for example, the described method may be performed in an order different from that described, and various steps may also be added, omitted, or combined. In addition, the features described with reference to certain examples may be combined in other examples.

[0177] Through the description of the above implementation methods, those skilled in the art can clearly understand that the above-mentioned embodiment methods can be implemented by means of software plus a necessary general hardware platform, and of course by hardware, but in many cases the former is a better implementation method. Based on such an understanding, the technical solution of the present application, or the part that contributes to the prior art, can be embodied in the form of a computer software product, which is stored in a storage medium (such as ROM / RAM, a disk, or an optical disk), and includes a number of instructions for a terminal (which can be a mobile phone, a computer, a server, or a network device, etc.) to execute the methods described in each embodiment of the present application.

[0178] The embodiments of the present application are described above in conjunction with the accompanying drawings, but the present application is not limited to the above-mentioned specific implementation methods. The above-mentioned specific implementation methods are merely illustrative and not restrictive. Under the guidance of the present application, ordinary technicians in this field can also make many forms without departing from the purpose of the present application and the scope of protection of the claims, all of which are within the protection of the present application.

[0179] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials, or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0180] Although the embodiments of the present application have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present application, and that the scope of the present application is defined by the claims and their equivalents.

Claims

1. A channel door identification method based on radio frequency identification, characterized in that: The channel door includes an antenna module, and the antenna module is used to transmit a radio frequency signal; the method includes: Controlling the radio frequency signal to scan along the channel direction of the channel door; Record and obtain the scanning angle corresponding to the tag signal returned by the radio frequency tag based on the radio frequency signal; The moving direction of the object attached with the radio frequency tag is identified according to the change of the scanning angle corresponding to the multiple tag signals returned by the radio frequency tag.

2. The method according to claim 1, characterized in that The antenna module includes an antenna array composed of a plurality of antenna units; the antenna units are arranged along the passage direction of the passage door.

3. The method according to claim 2, characterized in that The antenna unit is correspondingly provided with a phase shifter and / or a digitally controlled attenuator.

4. The method according to claim 3, characterized in that The step of controlling the radio frequency signal to scan along the channel direction of the channel gate includes: Adjusting the phase of the signal transmitted by the antenna unit through the phase shifter to control the radio frequency signal to scan along the channel direction of the channel gate; And / or, the amplitude of the signal transmitted by the antenna unit is adjusted by the digitally controlled attenuator to control the radio frequency signal to scan along the channel direction of the channel gate.

5. The method according to claim 1, characterized in that: The step of controlling the radio frequency signal to scan along the channel direction of the channel gate includes: The movement of the antenna unit in the antenna module is controlled to control the radio frequency signal to scan along the channel direction of the channel door.

6. The method according to claim 1, characterized in that The step of identifying the moving direction of the object attached with the radio frequency tag according to the change of the scanning angle corresponding to the multiple tag signals returned by the radio frequency tag comprises: Get the acquisition time of each tag signal; Determine the change of the scanning angle corresponding to each tag signal according to the acquisition time; The moving direction of the object attached with the radio frequency tag is identified according to the change of the scanning angle corresponding to each tag signal.

7. The method according to claim 1, characterized in that The method further comprises: Record and obtain the signal strength corresponding to the tag signal returned by the radio frequency tag based on the radio frequency signal; The entry and exit results of the object through the passage of the passage door are determined according to the movement direction of the object and the changes in the signal strengths corresponding to the multiple tag signals.

8. The method according to claim 7, characterized in that The step of determining the entry and exit result of the object through the passage of the passage door according to the movement direction of the object and the change of the signal strength corresponding to the plurality of tag signals includes: In the case where the changes in the signal strengths corresponding to the multiple tag signals conform to the first preset change relationship, if the moving direction of the object is the storage direction, determining that the storage-in and -out result of the object is storage; When the change of the signal strength corresponding to the plurality of tag signals conforms to the second preset change relationship, if the moving direction of the object is the outbound direction, it is determined that the in-and-out result of the object is outbound.

9. The method according to claim 7, characterized in that: The step of determining the entry and exit result of the object through the passage of the passage door according to the movement direction of the object and the change of the signal strength corresponding to the plurality of tag signals includes: Get the acquisition time of each tag signal; Determine the change of signal strength corresponding to multiple tag signals at the same scanning angle according to the acquisition time; The storage and outgoing results of the items are determined according to the moving direction of the items and the changes in the signal strengths corresponding to the multiple tag signals at the same scanning angle.

10. A channel door identification device based on radio frequency identification, characterized in that: The passage door includes an antenna module, and the antenna module is used to transmit a radio frequency signal; the device includes: A control module, used for controlling the radio frequency signal to scan along the channel direction of the channel door; A recording module, used for recording and obtaining a scanning angle corresponding to a tag signal returned by the radio frequency tag based on the radio frequency signal; The identification module is used to identify the moving direction of the object attached with the radio frequency tag according to the change of the scanning angle corresponding to the multiple tag signals returned by the radio frequency tag.

11. A channel door identification system based on radio frequency identification, characterized in that: comprising at least one access door and a controller, wherein the access door comprises an antenna module; The antenna module is used to transmit radio frequency signals; The controller is used to implement the method according to any one of claims 1 to 9.

12. An electronic device comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, characterized in that: When the processor executes the program, the method according to any one of claims 1 to 9 is implemented.

13. A non-transitory computer-readable storage medium having a computer program stored thereon, wherein the computer program, when executed by a processor, implements the method according to any one of claims 1 to 9.

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