Nfc automatic testing method and device, electronic equipment and storage medium

Abstract

The application relates to an NFC automatic testing method and device, electronic equipment and a storage medium. The method comprises the following steps: if a test instruction is triggered, moving a target device corresponding to the test instruction to an NFC detection module; testing the target device based on a preset test procedure; and after the test is completed, moving the target device to an output position. The movement of the target device is realized by detecting the triggered test instruction, and the output of the target device is realized after the test is completed by determining the test condition of the target device, so that the automation of the NFC detection of the target device is realized, the detection efficiency is improved compared with the manual mode, and the labor cost is saved.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of device testing, and particularly relates to an NFC automatic testing method and device, an electronic device and a storage medium. BACKGROUND

[0002] Currently, the function test of a watch NFC is often manually taken from a flow line to a test fixture for testing operation, and the target device is manually taken out from the test fixture after the test is completed; however, due to the reaction speed and operation efficiency of the staff, the manual function test mode has the problem of long test time in actual application, and increases the labor cost. SUMMARY

[0003] The present application provides an NFC automatic testing method and device, an electronic device and a storage medium, aiming at solving the technical problems of long function test time and high labor cost of the watch NFC in the prior art.

[0004] In order to solve the above technical problems or at least partially solve the above technical problems, the present application provides an NFC automatic testing method, which comprises the steps of:

[0005] If the test instruction is triggered, the target device corresponding to the test instruction is moved to an NFC detection module;

[0006] The target device is tested based on a preset test program;

[0007] After the test is completed, the target device is moved to an output position.

[0008] Optionally, the NFC detection module is multiple, and the step of moving the target device corresponding to the test instruction to the NFC detection module comprises:

[0009] The residual detection time of each NFC detection module is obtained;

[0010] The NFC detection module with the least residual detection time is taken as a target detection module;

[0011] After the target detection module completes the detection, the target device corresponding to the detection instruction is moved to a detection carrier in the target detection module.

[0012] Optionally, the step of testing the target device based on the preset test program comprises:

[0013] The target device is moved to a first position, wherein when the target device is at the first position, the NFC antenna of the target device is coincided with the center axis of the polling antenna of the NFC detection module;

[0014] sending an analog signal to the target device to set the target device to a card analog mode and to perform a card analog test on the target device;

[0015] moving the target device to a second position, wherein the NFC antenna of the target device is aligned with the center axis of the listening antenna of the NFC detection module when the target device is in the first position;

[0016] sending a read-write signal to the target device to set the target device to a read-write card mode and to perform a read-write test on the target device.

[0017] Optionally, the step of performing the card analog test on the target device comprises:

[0018] determining a first test signal, a first test distance, and a first pass condition corresponding to a card analog test item;

[0019] for each card analog test item, moving the target device to make the distance between the NFC antenna and the plane on which the polling antenna is located be the first test distance;

[0020] setting the network analyzer to the read-write card mode and controlling the network analyzer to send the first test signal to the polling antenna;

[0021] receiving, by a receiving processing unit, a response signal returned by the NFC antenna based on the first test signal and received by the polling antenna;

[0022] if the response signal satisfies the first pass condition, the current card analog test item of the target device is qualified.

[0023] Optionally, the step of performing the read-write test on the target device comprises:

[0024] determining a second test signal, a second test distance, and a second pass condition corresponding to a read-write test item;

[0025] for each read-write test item, moving the target device to make the distance between the NFC antenna and the plane on which the listening antenna is located be the second test distance;

[0026] setting the network analyzer to the card analog mode and sending the second test signal to the target device to make the NFC antenna of the target device broadcast the second test signal;

[0027] receiving, by a receiving processing unit, a listening signal received by the listening antenna based on the second test signal;

[0028] If the listening signal meets the second eligibility condition, the current read-write detection item of the target device is eligible.

[0029] To achieve the above object, the application further provides an NFC automatic testing device, which comprises a control module, a device moving module and an NFC detection module; the control module is connected with the device moving module and the NFC detection module respectively; wherein:

[0030] The control module is used for sending a first moving instruction to the device moving module when a testing instruction is triggered;

[0031] The device moving module is used for moving the target device to the NFC detection module after receiving the first moving instruction;

[0032] The NFC detection module is used for testing the target device based on a preset testing procedure and sending testing data to the control module;

[0033] The control module is used for sending a second moving instruction to the device moving module after determining that the testing is completed according to the testing data;

[0034] The device moving module is used for moving the target device to an output position after receiving the second moving instruction.

[0035] Optionally, the device moving module comprises a six-axis mechanical arm, an input conveyor belt, a material taking table and an output conveyor belt, and the six-axis mechanical arm is connected with the control module; wherein:

[0036] The input conveyor belt is used for transporting the target device to the material taking table;

[0037] The six-axis mechanical arm is used for moving the target device from the material taking table to the NFC detection module after receiving the first moving instruction, and is also used for moving the target device to the output conveyor belt after receiving the second moving instruction.

[0038] Optionally, the number of the NFC detection modules is multiple, the NFC automatic testing device comprises shielding boxes, the number of the shielding boxes is consistent with that of the NFC detection modules, and each NFC detection module is arranged in a corresponding shielding box.

[0039] Optionally, the NFC detection module comprises a polling antenna, a listening antenna, a network analyzer, a processing unit, a detection carrier and multiple air cylinders; wherein:

[0040] The transmitting end of the polling antenna is connected with the first end of the network analyzer and the first end of the processing unit respectively, and the receiving end of the polling antenna is connected with the second end of the processing unit.

[0041] The transmitting end of the listening antenna is connected with the second end of the network analyzer and the third end of the processing unit respectively, and the receiving end of the listening antenna is connected with the fourth end of the processing unit.

[0042] The detection carrier is connected with each cylinder through a transmission mechanism, wherein each cylinder drives the detection carrier to move in a corresponding direction when the cylinder acts, and the corresponding directions of different cylinders are different.

[0043] Optionally, the processing unit comprises an impedance matching subunit and a processing subunit, the impedance matching subunit comprises a first impedance matching subunit and a second impedance matching subunit; the first impedance matching subunit is connected between the polling antenna and the processing subunit, and the second impedance matching subunit is connected between the listening antenna and the processing subunit; wherein:

[0044] The impedance matching subunit comprises a first resistor, a second resistor, a first capacitor, a second capacitor, a first switch and a second switch.

[0045] The first end of the first resistor is connected with the transmitting end of the polling antenna / listening antenna, the second end of the first resistor is connected with the first / third end of the processing subunit through the first capacitor, the second end of the first resistor is also connected with the second / fourth end of the processing subunit through the second capacitor, the second end of the processing subunit is also connected with the receiving end of the polling antenna / listening antenna, the second resistor is connected with the second switch in series, and the branch where the second resistor and the second switch are located is connected with the second capacitor in parallel.

[0046] To achieve the above object, the present application further provides an electronic device, which comprises a memory, a processor and a computer program stored in the memory and executable on the processor, and the computer program is executed by the processor to realize the steps of the NFC automatic test method.

[0047] To achieve the above object, the present application further provides a computer readable storage medium, which stores a computer program, and the computer program is executed by a processor to realize the steps of the NFC automatic test method.

[0048] The application provides an NFC automatic testing method and device, electronic equipment and a storage medium. If a test instruction is triggered, a target device corresponding to the test instruction is moved to an NFC detection module; the target device is tested based on a preset test procedure; and after the test is completed, the target device is moved to an output position. The target device is moved by detecting the triggered test instruction, and the test of the target device is determined, and the target device is output after the test is completed, so that the automation of NFC detection of the target device is realized, the detection efficiency is improved compared with the manual mode, and the labor cost is saved. BRIEF DESCRIPTION OF DRAWINGS

[0049] The accompanying drawings, which are incorporated herein and constitute part of the specification, illustrate embodiments consistent with the application and, together with the description, serve to explain the principles of the application.

[0050] In order to more clearly illustrate the technical solutions in the embodiments of the application or the prior art, the accompanying drawings needed to be used in the embodiments or prior art description will be briefly introduced as follows. Obviously, for those skilled in the art, other drawings can also be obtained based on these drawings without creative labor.

[0051] Figure 1 A flowchart of a first embodiment of the NFC automatic testing method of the application;

[0052] Figure 2 A structural module diagram of the NFC automatic testing device of the application;

[0053] Figure 3 A structural diagram of an embodiment of the NFC automatic testing device of the application;

[0054] Figure 4 A structural diagram of a six-axis mechanical arm and an NFC detection module in the NFC automatic testing device of the application;

[0055] Figure 5 A planar structural diagram of a six-axis mechanical arm and an NFC detection module of the NFC automatic testing device of the application;

[0056] Figure 6 A structural diagram of an NFC detection module in the NFC automatic testing device of the application;

[0057] Figure 7 A structural diagram of an impedance matching subunit in the NFC automatic testing device of the application;

[0058] Figure 8 A module structural diagram of the electronic equipment of the application.

[0059] BRIEF DESCRIPTION OF DRAWINGS:

[0060] Reference Name Reference Name 100 Control module 300 NFC detection module 200 Device movement module 310 Shielded box 210 Six-axis robot arm 320 Detection vehicle 220 Input conveyor 330 Polling antenna 230 Output conveyor 340 Listening antenna 231 Qualified conveyor 350 Network analyzer 232 Unqualified conveyor 360 Processing unit R1-R2 First resistor-second resistor 370 Industrial computer C1-C2 First capacitor-second capacitor 380 Air cylinder S1-S2 First switch-second switch DETAILED DESCRIPTION

[0061] It should be understood that the specific embodiments described herein are merely exemplary and do not limit the application. In order to enable persons skilled in the art to better understand the application, the technical solutions in the embodiments of the application will be described clearly and completely below with reference to the accompanying drawings in the embodiments of the application. Obviously, the described embodiments are only part of the embodiments of the application, rather than all the embodiments of the application. Based on the embodiments in the application, all other embodiments obtained by persons skilled in the art without creative work should be within the protection scope of the application.

[0062] The application provides an NFC automatic testing method, which is used for testing the NFC of a target device. The target device is a device provided with NFC, and includes but is not limited to a smart watch, a mobile phone, a tablet computer and a headset. Figure 1 , Figure 1 The application provides an NFC automatic testing method, which is used for testing the NFC of a target device. The target device is a device provided with NFC, and includes but is not limited to a smart watch, a mobile phone, a tablet computer and a headset.

[0063] In step S10, if a test instruction is triggered, the target device corresponding to the test instruction is moved to the NFC detection module 300.

[0064] The test instruction is used for indicating the execution of a test operation. The test instruction can be triggered manually by a tester, or automatically triggered by detecting the position of the target device and when the target device reaches a specified position.

[0065] The NFC detection module 300 is used for testing the target device. It can be understood that, based on different test items required in practice, the NFC detection module 300 can be provided with a corresponding structure to meet different types of test items.

[0066] In actual application, the specific way of moving the target device can be determined based on the application scenario, including but not limited to conveying and grabbing.

[0067] In step S20, the target device is tested based on a preset test program.

[0068] The preset test program can be set based on the test items required in practice and the specific structure of the NFC test module. It can be understood that, all executable test items corresponding to the subprograms can be stored in advance, and before testing the target device, the worker can select the test items required to be tested, so as to generate the preset test program based on the subprograms corresponding to the selected test items.

[0069] Step S30, after the test is completed, the target device is moved to an output position.

[0070] The output position is used to receive the target device after the test is completed; similarly, the specific way to move the target device can be determined based on the application scenario.

[0071] The present application also provides an NFC automatic testing device applied to the above NFC automatic testing method, referring to Figure 2 , the NFC automatic testing device comprises a control module 100, a device moving module 200, and an NFC detection module 300; the control module 100 is connected with the device moving module 200 and the NFC detection module 300 respectively; wherein:

[0072] The control module 100 is used to send a first moving instruction to the device moving module 200 when a test instruction is triggered;

[0073] The device moving module 200 is used to move the target device to the NFC detection module 300 after receiving the first moving instruction;

[0074] The NFC detection module 300 is used to test the target device based on a preset test procedure and send test data to the control module 100;

[0075] The control module 100 is used to send a second moving instruction to the device moving module 200 according to the test data after the test is completed;

[0076] The device moving module 200 is used to move the target device to the output position after receiving the second moving instruction.

[0077] The control module 100 serves as the control center of the NFC automatic testing device, realizes the control and detection of the working state of each module, and the acquisition of each module data, etc.

[0078] The first moving instruction is used to indicate the moving operation of the target device from the specified position to the NFC detection module 300; the second moving instruction is used to indicate the moving of the target device from the NFC detection module 300 to the output position.

[0079] The specific structure of the device moving module 200 can be set based on the actual application scenario and the required moving mode.

[0080] The embodiment realizes the movement of the target device by detecting the triggered test instruction, realizes the output of the target device after the test is completed by determining the test situation of the target device, realizes the automation of the NFC detection of the target device, and improves the detection efficiency and saves the labor cost compared with the manual mode.

[0081] Further, in the second embodiment of the NFC automatic test method of the application based on the first embodiment of the application, the NFC detection module 300 is multiple, and the step S10 comprises the steps of:

[0082] Step S11, obtaining the remaining detection time of each NFC detection module 300;

[0083] Step S12, taking the NFC detection module 300 with the least remaining detection time as the target detection module;

[0084] Step S13, after the target detection module completes the detection, moving the target device corresponding to the detection instruction to the detection carrier 320 in the target detection module.

[0085] In the embodiment, multiple NFC detection modules 300 are arranged, so that multiple target devices can be tested at the same time. In order to improve the test efficiency, the idle time of the NFC detection module 300 should be reduced as much as possible. Therefore, the working state of each NFC detection module 300 is detected by the control module 100, such as once every 0.5s, to obtain the remaining detection time of the current test operation of each NFC detection module 300. The less the remaining detection time is, the earlier the corresponding NFC detection module 300 enters the idle state. Therefore, the NFC detection module 300 with the least remaining detection time is taken as the target detection module, so that the test efficiency can be improved.

[0086] Referring to Figures 3-5 In the embodiment, the device moving module 200 comprises a six-axis mechanical arm 210, an input conveying belt 220, a material taking table, and an output conveying belt 230, and the six-axis mechanical arm 210 is connected with the control module 100. Wherein:

[0087] The input conveying belt 220 is used for transporting the target device to the material taking table.

[0088] The six-axis mechanical arm 210 is used for moving the target device from the material taking table to the NFC detection module 300 after receiving the first moving instruction, and is also used for moving the target device to the output conveying belt 230 after receiving the second moving instruction.

[0089] The input conveyor belt 220 transports the target device to the taking table; the target device can be placed manually or from a production line, for example, the target device flows out of the conveyor belt of the production line and is blocked by the blocking device, and then enters the input conveyor belt 220, and the input conveyor belt 220 transports the target device to the taking table; a sensor is arranged at the taking table, and when the target device reaches the taking table, a test instruction is triggered; the specific type of the sensor can be selected based on the actual application needs, such as a light sensor, an infrared sensor, etc.; it can be understood that when the target device reaches the taking table, the posture of the target device may not meet the grasping requirements of the six-axis robot 210, therefore, a photoelectric switch or an image acquisition device can be arranged at the taking table to detect the posture of the target device, and when it is detected that the posture of the target device does not meet the preset grasping posture, the posture of the target device is adjusted to meet the preset grasping posture; the specific adjustment method of the posture of the target device can be set based on the actual application scenario, for example, a posture robot is arranged, the posture of the target device is adjusted by controlling the posture robot, and for another example, the taking table is arranged as a structure with adjustable rotation angle and inclination angle, and the posture of the target device can be adjusted by adjusting the rotation angle and the inclination angle of the taking table.

[0090] It should be noted that based on the source of the target device, multiple input conveyor belts 220 can be arranged, for example, multiple production lines can correspond to multiple input conveyor belts 220, and the multiple input conveyor belts 220 can correspond to the same taking table or correspondingly arranged different taking tables; when the test instruction is triggered, the control module 100 generates a position determination target device based on the test instruction, and sends a first moving instruction corresponding to the taking table to the six-axis robot 210; the six-axis robot 210 grasps the target device at the corresponding taking table by one gripper after receiving the first moving instruction, the processing module determines the target detection module with the least remaining detection time, and when the target detection module completes the test operation, the processing module sends a feeding instruction to the six-axis robot 210, and the feeding instruction includes a second moving instruction of the target device in the target detection module that has completed the test; the six-axis robot 210 takes out the target device that has completed the test originally placed in the detection carrier 320 of the target detection module by another gripper after receiving the feeding instruction, and places the target device that needs to be tested in the detection carrier 320 of the target detection module, and then places the target device that has completed the test on the output conveyor belt 230, so that the target device moves to the output position through the output conveyor belt 230. In this way, the automatic feeding and discharging of the target device and the output are realized.

[0091] When outputting the target device, the target device can be output to different output positions based on the test result, such as the output conveyor 230 including a qualified conveyor 231 and an unqualified conveyor 232, and the output positions including a qualified position and an unqualified position; when the test result of the target device is qualified, the six-axis robot arm 210 grasps the target device to the qualified conveyor 231 to move to the qualified position through the qualified conveyor 231; when the test result of the target device is unqualified, the six-axis robot arm 210 grasps the target device to the unqualified conveyor 232 to move to the unqualified position through the unqualified conveyor 232.

[0092] Further, the number of the NFC detection modules 300 is multiple, the NFC automatic test device comprises shielding boxes 310, the number of the shielding boxes 310 is consistent with the number of the NFC detection modules 300, and each of the NFC detection modules 300 is arranged in the corresponding shielding box 310.

[0093] It can be understood that NFC relies on the principle of electromagnetic induction, and a magnetic field needs to be generated when testing the NFC of the target device, and the six-axis robot arm 210 will cut the magnetic induction lines when moving, thereby affecting the test result of the NFC; in order to avoid this problem, the shielding box 310 is arranged for the NFC detection module 300 in the embodiment, the shielding box 310 is used to shield external radio interference, and the cutting of the internal magnetic induction lines by the robot arm is avoided, so as to ensure the accuracy of the test; further, the material of the shielding box 310 is metal.

[0094] The embodiment can realize the automatic feeding and discharging of the target device, shield external radio interference, avoid the cutting of the internal magnetic induction lines by the robot arm, and ensure the accuracy of the test.

[0095] Further, in the second embodiment of the NFC automatic test method of the application based on the first embodiment of the application, the step S20 comprises the steps of:

[0096] Step S21, moving the target device to a first position, wherein the NFC antenna of the target device is coincided with the center axis of the polling antenna 330 of the NFC detection module 300 when the target device is in the first position;

[0097] Step S22, sending an analog signal to the target device to set the target device to a card simulation mode, and performing a card simulation test on the target device;

[0098] Step S23, moving the target device to a second position, wherein the NFC antenna of the target device is coincided with the center axis of the listening antenna 340 of the NFC detection module 300 when the target device is in the first position;

[0099] Step S24, sending a read-write signal to the target device to set the target device to a read-write card mode, and performing a read-write test on the target device.

[0100] The embodiment respectively tests the target device in the card simulation mode and the read-write card mode.

[0101] The simulation signal is used to indicate the card simulation mode of the target device, and the read-write signal is used to indicate the read-write card mode of the target device. It can be understood that after the target device moves to the detection carrier 320 of the NFC detection module 300, the processing unit 360 in the NFC detection module 300 establishes a connection with the target device, such as through a USB interface, an electrical contact, etc. on the target device, to realize communication of the simulation signal, the read-write signal, and subsequent other signals or data.

[0102] The card simulation mode is to simulate the NFC of the target device as an NFC card, passively respond to the signal of an external radio frequency field, and realize being read / written; the read-write card mode is that the NFC of the target device generates a radio frequency field, and actively sends a signal to an NFC card in the radio frequency field to realize reading / writing of the NFC card. The polling antenna 330 is used to send a signal to perform a card simulation test on the target device; the listening antenna 340 is used to receive a signal to perform a read-write test on the target device. It can be understood that when the target device is tested, the NFC antenna of the target device needs to coincide with the central axis of the polling antenna 330 / listening antenna 340.

[0103] Referring to Figure 6 , the NFC detection module 300 includes a polling antenna 330, a listening antenna 340, a network analyzer 350, a processing unit 360, a detection carrier 320, and a plurality of air cylinders 380; wherein:

[0104] The transmitting end of the polling antenna 330 is connected with the first end of the network analyzer 350 and the first end of the processing unit 360 respectively, and the receiving end of the polling antenna 330 is connected with the second end of the processing unit 360;

[0105] The transmitting end of the listening antenna 340 is connected with the second end of the network analyzer 350 and the third end of the processing unit 360 respectively, and the receiving end of the listening antenna 340 is connected with the fourth end of the processing unit 360;

[0106] The detection carrier 320 is connected with each air cylinder 380 through a transmission mechanism, wherein each air cylinder 380 drives the detection carrier 320 to move in a corresponding direction when the air cylinder 380 acts, and the corresponding directions of different air cylinders 380 are different.

[0107] In the embodiment, the positions of the polling antenna 330 and the listening antenna 340 are fixed, a coordinate system can be established in advance, and the positions of the polling antenna 330 and the listening antenna 340 in the coordinate system are determined. When the card simulation test is performed on the target device, the NFC antenna of the target device is controlled to coincide with the central axis of the polling antenna 330 of the NFC detection module 300 by controlling the action of the air cylinder 380. When the read-write test is performed on the target device, the NFC antenna of the target device is controlled to coincide with the central axis of the listening antenna 340 of the NFC detection module 300 by controlling the action of the air cylinder 380.

[0108] Specifically, the corresponding air cylinder 380 can be provided for the X, Y and Z directions to realize the movement of the target device in the three directions. In the embodiment, the polling antenna 330, the listening antenna 340 and the detection carrier 320 are arranged to be symmetrically arranged about the center of the X plane. At this time, only the corresponding air cylinder 380 needs to be provided for the Y and Z directions, so as to ensure that the NFC antenna coincides with the central axis of the polling antenna 330 / listening antenna 340.

[0109] In other embodiments, the detection carrier 320 can also be fixedly arranged, and the NFC antenna is controlled to coincide with the central axis of the polling antenna 330 / listening antenna 340 by moving the polling antenna 330 and the listening antenna 340.

[0110] The network analyzer 350 is configured to send a test signal to the polling antenna 330, and the processing unit 360 is configured to receive a related signal and detect the target device according to the related signal. It should be noted that, in addition to the test realized by the processing unit 360, an industrial computer 370 can also be additionally provided to realize the data processing function.

[0111] Further, the processing unit 360 includes an impedance matching subunit (not marked) and a processing subunit. The impedance matching subunit includes a first impedance matching subunit and a second impedance matching subunit. The first impedance matching subunit is connected between the polling antenna 330 and the processing subunit, and the second impedance matching subunit is connected between the listening antenna 340 and the processing subunit. Wherein:

[0112] The impedance matching subunit includes a first resistor R1, a second resistor R2, a first capacitor C1, a second capacitor C2, a first switch S1 and a second switch S2.

[0113] The first end of the first resistor R1 is connected with the transmitting end of the polling antenna 330 / listening antenna 340, the second end of the first resistor R1 is connected with the first / third end of the processing subunit through the first capacitor C1, the second end of the first resistor R1 is also connected with the second / fourth end of the processing subunit through the second capacitor C2, the second end of the processing subunit is also connected with the receiving end of the polling antenna 330 / listening antenna 340, the second resistor R2 is connected with the second switch S2 in series, and the branch where the second resistor R2 and the second switch S2 are located is connected with the second capacitor C2 in parallel.

[0114] In the process of information and energy transmission between the NFC detection module 300 and the target device NFC, the antenna plays a crucial role, and improving the performance of the polling antenna 330 and the listening antenna 340 in the NFC detection module 300 is of great significance to improving the quality and reliability of NFC testing.

[0115] It can be understood that the structure design and performance research of the NFC detection module 300 antenna need to pay attention to the equivalent inductance, parasitic capacitance, loss resistance and other electrical properties of the antenna, because these electrical indicators will have important influence on the resonant frequency, quality factor, working bandwidth, communication distance and other working performances of the NFC detection module 300; in order to improve the working performance of the NFC detection module 300 at the resonant frequency point and make the reflection power at the resonant frequency point minimum, an impedance matching subunit is arranged in the embodiment, and the equivalent impedance of the NFC matched by the impedance matching subunit is approximately 50Ω.

[0116] It can be understood that for a pure resistance circuit, as long as the impedance of the excitation source and the complex resistance are equal, the power maximum output can be realized; and for a circuit composed of capacitance or inductance, because of the existence of virtual impedance, therefore, in order to realize the power maximum output, the impedance of the excitation source and the impedance of the load should be conjugate matched, the real part is equal, and the virtual part is removed. Referring to Figure 7 , the detection antenna (polling antenna 330 / listening antenna 340) can be equivalent to a parallel circuit of parasitic capacitance C a , equivalent inductance L a and loss resistance R a . This embodiment considers that the matching impedance of the NFC antenna of different target devices is different, therefore, the first resistor R1 in series is connected or disconnected by controlling the on-off of the first switch S1, and the second resistor R2 in parallel is connected or disconnected by controlling the on-off of the second switch S2; the total impedance Z eq of the detection antenna is:

[0117]

[0118] Among them:

[0119]

[0120]

[0121] Wherein, when the first switch S1 is closed, S1=0; when the first switch S1 is disconnected, S1=1; when the second switch S2 is closed, S2=0; when the second switch S2 is disconnected, S2=0.

[0122] The size of the matching impedance is adjusted by controlling the first switch S1 and the second switch S2 to meet different target devices. Specifically, the calibration values of the parasitic capacitance C a , the equivalent inductance L a , the loss resistance R a , and the first resistance R1, the second resistance R2, the first capacitance C1 and the second capacitance C2 in the impedance matching sub-unit of the test antenna can be obtained in advance by a PICC antenna board, an oscilloscope and an LCR bridge calibration test device conforming to the NFC Forum standard, and stored.

[0123] Further, the step S22 includes the steps of:

[0124] Step S221, determining the first test signal, the first test distance and the first qualified condition corresponding to the card simulation detection item;

[0125] Step S222, for each card simulation detection item, moving the target device so that the distance between the NFC antenna and the plane where the polling antenna 330 is located is the first test distance;

[0126] Step S223, setting the network analyzer 350 to read-write card mode, and controlling the network analyzer 350 to send the first test signal to the polling antenna 330;

[0127] Step S224, receiving the response signal returned by the NFC antenna based on the first test signal received by the polling antenna 330 through the receiving processing unit 360;

[0128] Step S225, if the response signal meets the first qualified condition, the current card simulation detection item of the target device is qualified.

[0129] The card simulation detection items include, but are not limited to, transmission power, carrier frequency, waveform modulation, waveform quality, empty load field strength, NFC product protocol consistency test, ASK modulation number, subcarrier modulation, communication distance, return loss, quality factor, resonance frequency; the first test distance can be set based on an actual application scenario, and in the embodiment, the first test distance corresponding to other card simulation detection items except the communication distance is 5 cm; the specific tests of different card simulation detection items are described below:

[0130] Transmission power: the network analyzer 350 sends power to the polling antenna 330 to generate a stable radio frequency field without modulation, and the network analyzer 350 sends a carrier modulation based on a preset protocol through the polling antenna 330 as a polling device, the preset protocol including, but not limited to, one or more of ISO / IEC 14443 Type A, Type B, FeliCa, and ISO 15693 protocol; the output voltage of the network analyzer 350 ranges from 0 to 15 V, and the output transmission power can be adjusted by adjusting the output voltage of the network analyzer 350, and the output voltage of the first end, i.e., the sending end voltage of the polling antenna 330, is monitored by the processing unit 360, and the sending end voltage of the NFC antenna of the target device is also obtained, and the transmission power test can be completed by comparing the sending end voltage of the polling antenna 330 with the sending end voltage of the NFC antenna;

[0131] Carrier frequency: the network analyzer 350 outputs a 13.56 MHz sine wave unmodulated signal to the polling antenna 330, and the frequency measurement module of the FPGA (Field Programmable Gate Array, programmable array logic) built in the processing unit 360 detects the pulse trigger of the second end of the processing unit 360, continuously intercepts the unmodulated waveform for 400 us, obtains the average frequency of the unmodulated waveform, and determines the standard frequency according to the average frequency, and further analyzes the harmonic content of the carrier frequency by Fourier transform to make the carrier frequency meet the requirements, specifically, the closer the carrier frequency is to the center point frequency of 13.56 mHz, the higher the quality is; the target device NFC responds to the polling antenna 330 to generate a 848 kHz subcarrier, and the polling antenna 330 receives the response signal, the second end of the processing unit 360 samples at high speed, demodulates the subcarrier information in the response signal, and judges whether the frequency of the subcarrier is within the range of 848 kHz, if it is within the range of 848 kHz, the carrier frequency is qualified;

[0132] Waveform modulation: the network analyzer 350 outputs an ASK carrier modulation signal based on a preset protocol through polling the antenna 330, the phase of the ASK carrier modulation signal is increased by 10 degrees each time from 0 degrees until 180 degrees, the processing unit 360 continuously captures the modulation waveform received by the target device NFC for 40us, and performs all waveform analysis on the modulation waveform after filtering out the 13.56MHz carrier, so that the received signal envelope time meets the requirements; for example, the signal envelope is V, V1 is the initial value before modulation, V2=0.05V1, V3=0.6V1, V4=0.9V1; wherein, V4 falls to V2 is the envelope falling edge, V2 rises to V4 is the envelope rising edge, the rising edge is maintained below 400ns, and the falling edge is maintained below 600ns, the quality of the waveform modulation is measured by the envelope time, the amplitude of the modulation waveform and the phase;

[0133] Waveform quality: the network analyzer 350 outputs a 13.56MHz unmodulated sine wave to the polling antenna 330, the processing unit 360 built-in FPGA (Field Programmable Gate Array, programmable array logic) frequency measurement module detects the pulse trigger at the second end of the processing unit 360, and continuously intercepts the unmodulated waveform for 400us, the NFC standard requires that the carrier be a standard sine wave without spurs, harmonics or noise, the processing unit 360 uses Fourier transform to analyze the carrier frequency harmonic content and the distortion rate of the sine wave, and determines the waveform quality according to the harmonic content and the distortion rate of the sine wave. It can be understood that the smaller the distortion rate of the sine wave, the higher the waveform quality, and the lower the harmonic content, the higher the waveform quality;

[0134] Idle field strength: when the polling antenna 330 generates an unmodulated radio frequency field, the ISO standard PICC coil is vertically placed 3cm above the center of the polling antenna 330, the processing unit 360 obtains a continuous 10us unmodulated waveform by edge trigger sampling, and measures the peak-to-peak voltage of the unmodulated waveform. The idle field strength is obtained by dividing the peak-to-peak voltage by 0.9;

[0135] NFC product protocol consistency test: the network analyzer 350 modulates the carrier to poll the target device with preset protocols and different communication rates, the communication rates in this embodiment are 106kbps, 212kbps and 424kbps, the target device NFC responds to the carrier to generate a subcarrier frequency and ASK encodes the response signal with the corresponding preset protocol and communication rate, if the target device NFC completes the response to all preset protocols and communication rate carriers, the NFC product protocol consistency test is passed;

[0136] ASK modulation number: the network analyzer 350 respectively ASK modulates different preset protocols with different amplitudes, specifically, ISO / IEC 14443 Type A corresponds to 100% ASK modulation, ISO / IEC 14443 Type B corresponds to 10% ASK modulation, ISO 15693 corresponds to 10% ASK modulation, FeliCa corresponds to 8-30% ASK modulation; the processing unit 360 continuously captures the modulated waveform received by the target device NFC for 40us, and performs all waveform analysis on the intercepted waveform, so that the received signal envelope time meets the requirements; if the signal envelope is V, V5 is the initial value before modulation, V6=0.05V5, V7=0.5V5, V8=0.8V5, wherein V8 falls to V6 is the envelope falling edge, V6 rises to V8 is the envelope rising edge, the rising edge maintains below 400ns, and the falling edge maintains below 600ns; the processing unit 360 demodulates the ASK modulation number after waveform filtering according to the decoding rules of the corresponding protocol, and judges whether the ASK modulation number meets the qualified condition according to the amplitude, phase, time, frequency, etc. in the ASK modulation number;

[0137] Subcarrier modulation: the network analyzer 350 transmits a polling radio frequency electromagnetic signal through the polling antenna 330, the target device NFC responds to the polling antenna 330, generates a 848kHz subcarrier, the polling antenna 330 receives the response signal, and the processing unit 360 demodulates the response signal and detects whether the subcarrier frequency meets the qualified condition;

[0138] Return loss, quality factor, resonance frequency test: the network analyzer 350 starts from a 12MHz carrier frequency and transmits an unmodulated sine wave with a step of 10Hz until 16MHz, obtains the coupling peak-to-peak voltage of the carrier received by the target device NFC, and records the frequency point corresponding to the maximum peak-to-peak voltage, i.e. the resonance frequency point; the quality factor is:

[0139]

[0140] Wherein Z eq1 is the resonance point impedance, w is the peak-to-peak value calculated by measurement, and C t is the resonance point after coupling of the polling antenna 330; since the inductance, capacitance and quality factor of the polling antenna 330 are determined values, they can be measured in advance by an LCR digital bridge instrument, so that the return loss, quality factor, resonance frequency and frequency bandwidth of the target device NFC antenna less than-10dB can be calculated;

[0141] Communication distance: the Y direction corresponding to the cylinder 380 action, to make the NFC antenna and the polling antenna 330 lies in the plane distance from 10 cm, with 0.5 cm as a step to decrease until 1 cm, get a plurality of detection distance; for each detection distance, the processing unit 360 by detecting transmission power, carrier frequency, waveform modulation, waveform quality, empty load field intensity, waveform rising time, waveform falling edge time, time delay time, response time, etc. to determine the detection distance corresponding to the communication quality, when all detection distance corresponding to the communication quality meets the detection distance corresponding to the quality requirements, the communication distance detection qualified.

[0142] Further, the step S24 comprises the steps of:

[0143] Step S241, determine the second test signal corresponding to the read-write detection item, the second test distance and the second qualified condition;

[0144] Step S242, for each of the read-write detection item, the target device is moved, so that the distance between the NFC antenna and the listening antenna 340 lies in the plane is the second test distance;

[0145] Step S243, the network analyzer 350 is set to card simulation mode, the second test signal is sent to the target device, so that the NFC antenna of the target device broadcasts the second test signal;

[0146] Step S244, the receiving processing unit 360 receives the listening signal received by the listening antenna 340 based on the second test signal;

[0147] Step S245, if the listening signal meets the second qualified condition, the current read-write detection item of the target device is qualified.

[0148] Read-write detection items include but are not limited to antenna input amplitude, load modulation, transmission power, carrier frequency, waveform modulation, waveform quality, empty load field intensity, communication distance, return loss, quality factor, resonance frequency; the second test distance can be set based on the actual application scene, in the embodiment, the first test distance corresponding to other read-write detection items except communication distance is 5 cm; the specific test of different read-write detection items is described as follows:

[0149] Antenna input amplitude: the fourth segment of the processing unit 360 monitors the voltage peak value of the signal, which is the antenna input amplitude;

[0150] Load modulation: the target device NFC provides unmodulated radio frequency field, the processing unit 360 listens to the load modulation signal received by the listening antenna 340, measures the peak-peak value of the load modulation signal, and completes the load modulation test;

[0151] Transmission power: the target device NFC sends a power to generate a stable radio frequency field without modulation at the polling antenna 330, the listening antenna 340 is in the working field; the processing unit 360 uses the edge trigger at the fourth end to capture a continuous 10us non-modulation waveform, measures the root mean square voltage of the waveform to determine the transmission power characteristics of the target device NFC;

[0152] Carrier frequency: the target device NFC outputs a 13.56MHz sine wave non-modulation signal, the listening antenna 340 responds to the signal, the FPGA frequency measurement module built in the processing unit 360 detects the pulse trigger at the fourth end of the processing unit 360, continuously intercepts a 400us non-modulation waveform, obtains the average frequency of the non-modulation waveform, and determines the standard frequency according to the average frequency. Further, the harmonic content of the carrier frequency is analyzed by Fourier transform, so that the carrier frequency meets the requirements. Specifically, the closer the carrier frequency is to the 13.56mHz center point frequency, the higher the quality is;

[0153] Waveform modulation: the listening antenna 340 detects the modulation signal emitted by the NFC antenna, and the processing unit 360 continuously captures a 20us modulation waveform. The intercepted waveform is analyzed by all waveform analysis, so that the received signal envelope time meets the requirements. For example, the signal envelope is V, V9 is the initial value before modulation, V10=0.05V9, V11=0.6V9, and V12=0.9V9. Wherein, V12 falls to V10 is the envelope falling edge, and V10 rises to V12 is the envelope rising edge. The rising edge is maintained below 400ns, and the falling edge is maintained below 600ns. The quality of waveform modulation is measured by the envelope time and the amplitude of the modulation waveform;

[0154] Waveform quality: the target device NFC outputs a 13.56MHz sine wave non-modulation signal, the listening antenna 340 responds to the signal, the FPGA frequency measurement module built in the processing unit 360 detects the pulse trigger at the fourth end of the processing unit 360, and continuously intercepts a 400us non-modulation waveform. The NFC standard requires that the carrier be a standard sine wave without burr, harmonic or clutter. The processing unit 360 uses Fourier transform to analyze the harmonic content of the carrier frequency of the non-modulation waveform and the distortion rate of the sine wave. The waveform quality is determined according to the harmonic content and the distortion rate of the sine wave. It can be understood that the smaller the distortion rate of the sine wave is, the higher the waveform quality is, and the lower the harmonic content is, the higher the waveform quality is;

[0155] No-load field strength: when the NFC antenna generates an unmodulated radio frequency field, the ISO standard PICC coil is vertically placed 3cm above the center of the listening antenna 340. The processing unit 360 samples the continuous 10us non-modulation waveform by edge trigger, measures the peak-to-peak voltage of the non-modulation waveform, and obtains the no-load field strength by dividing the peak-to-peak voltage by 0.9;

[0156] The echo loss, quality factor, and resonance frequency test: the target device NFC transmits an unmodulated sinusoidal wave from a carrier frequency of 12 MHz, with a step size of 10 Hz, until 16 MHz. The processing unit 360 obtains the peak-to-peak coupling voltage of the carrier received by the listening antenna 340, and records the frequency point corresponding to the maximum peak-to-peak voltage, i.e., the resonance frequency point. The quality factor is:

[0157]

[0158] where Z eq2 is the resonance point impedance, w is the PICC coil measurement and calculation value, C n is the resonance point after the polling antenna 330 is coupled. Since the inductance, capacitance, and quality factor of the polling antenna 330 are fixed values, they can be measured in advance by an LCR digital bridge instrument, so the resonance point echo loss, quality factor, resonance frequency, and frequency bandwidth of the target device NFC antenna less than -10 dB can be calculated.

[0159] Communication distance: the Y-direction corresponding cylinder 380 is controlled to act, so that the distance between the NFC antenna and the plane where the listening antenna is located is decreased from 4 cm to 1 cm with a step size of 0.5 cm. For each detection distance, the processing unit 360 determines the communication quality corresponding to the detection distance by detecting the transmission power, carrier frequency, waveform modulation, waveform quality, unloaded field strength, waveform rising edge time, waveform falling edge time, time delay time, and response time, etc. When the communication quality corresponding to all detection distances meets the quality requirements corresponding to the detection distances, the communication distance detection is qualified.

[0160] The embodiment can accurately perform card simulation testing and read-write testing on the target device.

[0161] It should be noted that, for the foregoing method embodiments, in order to simply describe, they are all expressed as a series of action combinations, but those skilled in the art should know that the present application is not limited by the action order described, because according to the present application, certain steps can be performed in other orders or simultaneously. Secondly, those skilled in the art should know that the embodiments described in the specification are all preferred embodiments, and the actions and modules involved are not necessarily required by the present application.

[0162] Through the description of the above embodiments, those skilled in the art can clearly understand that the method according to the above-mentioned embodiments can be realized by means of software on a general hardware platform as necessary, and of course, it can also be realized by hardware, but in many cases, the former is a better embodiment. Based on such understanding, the technical solutions of the present application can be embodied in the form of a software product in essence or in the form of a part of the prior art that makes a contribution. The computer software product is stored in a storage medium (such as a ROM / RAM, a magnetic disk, an optical disk), and includes a plurality of instructions for causing a terminal device (which can be a mobile phone, a computer, a server, or a network device, etc.) to execute the method described in each embodiment of the present application.

[0163] With reference to Figure 8 In terms of hardware structure, the electronic device can include a communication module 10, a memory 20, a processor 30, and the like. In the electronic device, the processor 30 is connected with the memory 20 and the communication module 10 respectively, the memory 20 stores a computer program, the computer program is executed by the processor 30, and the computer program realizes the steps of the above-mentioned method embodiments when executed.

[0164] The communication module 10 can be connected with external communication devices through a network. The communication module 10 can receive a request sent by the external communication device, and can also send a request, an instruction and information to the external communication device. The external communication device can be other electronic devices, servers or Internet of Things devices, such as televisions and the like.

[0165] The memory 20 can be used to store software programs and various data. The memory 20 can mainly include a program storage area and a data storage area, wherein the program storage area can store an operating system, at least one application program required by a function (such as moving the target device corresponding to the test instruction to the NFC detection module), and the like; the data storage area can include a database, and the data storage area can store data or information created according to the use of the system, and the like. In addition, the memory 20 can include a high-speed random access memory, and can also include a non-volatile memory, such as at least one magnetic disk storage device, a flash memory device, or other volatile solid-state memory device.

[0166] The processor 30 is the control center of the electronic device. It connects various parts of the electronic device via various interfaces and lines. By running or executing software programs and / or modules stored in the memory 20, and by calling data stored in the memory 20, it performs various functions and processes data, thereby providing overall monitoring of the electronic device. The processor 30 may include one or more processing units; optionally, the processor 30 may integrate an application processor and a modem processor. The application processor mainly handles the operating system, user interface, and applications, while the modem processor mainly handles wireless communication. It is understood that the modem processor may not be integrated into the processor 30.

[0167] although Figure 8 Not shown, but the above-described electronic device may further include a circuit control module for connecting to a power supply to ensure the normal operation of other components. Those skilled in the art will understand that... Figure 8 The electronic device structure shown does not constitute a limitation on the electronic device and may include more or fewer components than shown, or combine certain components, or have different component arrangements.

[0168] The present invention also proposes a computer-readable storage medium having a computer program stored thereon. The computer-readable storage medium may be... Figure 8 The memory 20 in the electronic device may also be at least one of ROM (Read-Only Memory) / RAM (Random Access Memory), magnetic disk, optical disk, etc. The computer-readable storage medium includes a number of instructions to cause a terminal device with a processor (which may be a computer, server, terminal, or network device, etc.) to execute the methods described in the various embodiments of the present invention.

[0169] In this invention, the terms "first," "second," "third," "fourth," and "fifth" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0170] In the description of the specification, the description of the terms "one embodiment", "some embodiments", "an example", "a specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In the specification, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any appropriate manner in any one or more embodiments or examples. In addition, different embodiments or examples described in the specification and the features of different embodiments or examples can be combined and combined by those skilled in the art without contradiction, and the combination is also included in the scope of the present application.

[0171] Although the embodiments of the present application have been shown and described above, the scope of protection of the present application is not limited thereto, and it can be understood that the above embodiments are exemplary and cannot be construed as limiting the present application, and those skilled in the art can make changes, modifications and replacements to the above embodiments within the scope of the present application, and these changes, modifications and replacements shall be included in the scope of protection of the present application. Therefore, the scope of protection of the present application shall be subject to the scope of protection of the claims.

Claims

1. A method of NFC automatic testing, characterized in that, The NFC automatic testing method comprises: if a test instruction is triggered, moving a target device corresponding to the test instruction to an NFC detection module; testing the target device based on a preset test procedure; after the testing is completed, moving the target device to an output position; the step of testing the target device based on the preset test procedure comprises: moving the target device to a first position, wherein the NFC antenna of the target device is coincident with a central axis of a polling antenna of the NFC detection module at the first position; sending an analog signal to the target device to set the target device to a card analog mode, and performing card analog testing on the target device; moving the target device to a second position, wherein the NFC antenna of the target device is coincident with a central axis of a listening antenna of the NFC detection module at the first position; sending a read-write signal to the target device to set the target device to a read-write card mode, and performing read-write testing on the target device.

2. The NFC automatic test method of claim 1, wherein, The NFC detection module is multiple, and the step of moving the target device corresponding to the test instruction to the NFC detection module comprises: obtaining a remaining detection time of each NFC detection module; taking the NFC detection module with the least remaining detection time as a target detection module; after the target detection module completes detection, moving the target device corresponding to the detection instruction to a detection carrier in the target detection module.

3. The NFC automatic test method of claim 1, wherein, The step of performing card analog testing on the target device comprises: determining a first test signal, a first test distance and a first qualified condition corresponding to a card analog detection item; for each card analog detection item, moving the target device to make the distance between the NFC antenna and the plane where the polling antenna is located be the first test distance; setting a network analyzer to a read-write card mode, and controlling the network analyzer to send the first test signal to the polling antenna; receiving, by a receiving processing unit, an answer signal returned by the NFC antenna based on the first test signal and received by the polling antenna; if the answer signal satisfies the first qualified condition, the current card analog detection item of the target device is qualified.

4. The NFC automatic test method of claim 1, wherein, The step of performing read-write testing on the target device comprises: determining a second test signal, a second test distance and a second qualified condition corresponding to a read-write detection item; for each read-write detection item, moving the target device to make the distance between the NFC antenna and the plane where the listening antenna is located be the second test distance; setting a network analyzer to a card analog mode, and sending the second test signal to the target device to make the NFC antenna of the target device broadcast the second test signal; receiving, by a receiving processing unit, a listening signal received by the listening antenna based on the second test signal; if the listening signal satisfies the second qualified condition, the current read-write detection item of the target device is qualified.

5. An NFC automatic test device, characterized in that, The NFC automatic testing device comprises a control module, a device moving module and an NFC detection module; the control module is connected with the device moving module and the NFC detection module; wherein: The control module is configured to send a first moving instruction to the device moving module when a test instruction is triggered; The device moving module is configured to move a target device to the NFC detection module after receiving the first moving instruction; The NFC detection module is configured to test the target device based on a preset test procedure and send test data to the control module; The step of testing the target device based on the preset test procedure comprises: Moving the target device to a first position, wherein the NFC antenna of the target device coincides with the center axis of the polling antenna of the NFC detection module when the target device is at the first position; Sending an analog signal to the target device to set the target device to a card simulation mode and perform card simulation testing on the target device; Moving the target device to a second position, wherein the NFC antenna of the target device coincides with the center axis of the listening antenna of the NFC detection module when the target device is at the first position; Sending a read-write signal to the target device to set the target device to a read-write card mode and perform read-write testing on the target device; The control module is configured to send a second moving instruction to the device moving module after determining that the testing is completed based on the test data; The device moving module is configured to move the target device to an output position after receiving the second moving instruction.

6. The NFC automatic test device of claim 5, wherein, The device moving module comprises a six-axis mechanical arm, an input conveyor belt, a material taking table and an output conveyor belt, and the six-axis mechanical arm is connected with the control module; wherein: The input conveyor belt is configured to transport the target device to the material taking table; The six-axis mechanical arm is configured to move the target device from the material taking table to the NFC detection module after receiving the first moving instruction, and move the target device to the output conveyor belt after receiving the second moving instruction.

7. The NFC automatic test device of claim 5, wherein, The number of the NFC detection modules is multiple, and the NFC automatic testing device comprises shielding boxes, the number of the shielding boxes is consistent with the number of the NFC detection modules, and each NFC detection module is arranged in a corresponding shielding box.

8. The NFC automatic test device of claim 5, wherein, The NFC detection module comprises a polling antenna, a listening antenna, a network analyzer, a processing unit, a detection carrier and multiple air cylinders; wherein: The sending end of the polling antenna is connected with the first end of the network analyzer and the first end of the processing unit, and the receiving end of the polling antenna is connected with the second end of the processing unit; The sending end of the listening antenna is connected with the second end of the network analyzer and the third end of the processing unit, and the receiving end of the listening antenna is connected with the fourth end of the processing unit; The detection carrier is connected with each of the air cylinders through a transmission mechanism, wherein each of the air cylinders drives the detection carrier to move in a corresponding direction when the air cylinder is actuated, and the corresponding directions of different air cylinders are different.

9. The NFC automatic test device of claim 8, wherein, The processing unit comprises an impedance matching subunit and a processing subunit, the impedance matching subunit comprises a first impedance matching subunit and a second impedance matching subunit; the first impedance matching subunit is connected between the polling antenna and the processing subunit, and the second impedance matching subunit is connected between the listening antenna and the processing subunit; wherein: The impedance matching subunit comprises a first resistor, a second resistor, a first capacitor, a second capacitor, a first switch and a second switch; The first end of the first resistor is connected with the transmitting end of the polling antenna / listening antenna, the second end of the first resistor is connected with the first / third end of the processing subunit through the first capacitor, the second end of the first resistor is also connected with the second / fourth end of the processing subunit through the second capacitor, the second end of the processing subunit is also connected with the receiving end of the polling antenna / listening antenna, the second resistor is connected with the second switch in series, and the branch of the second resistor and the second switch is connected with the second capacitor in parallel.

10. An electronic device, comprising: The electronic device comprises a memory, a processor and a computer program stored on the memory and executable on the processor, and the computer program is executed by the processor to implement the steps of the NFC automatic test method according to any one of claims 1 to 4.

11. A computer readable storage medium, characterized in that, The computer readable storage medium stores a computer program, and the computer program is executed by the processor to implement the steps of the NFC automatic test method according to any one of claims 1 to 4.

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