A method and related device for testing multiple frequency points in a PEPS production process

Abstract

This invention discloses a multi-frequency testing method and related apparatus for PEPS production. The offline testing equipment utilizes default high-frequency configuration parameters simulating a smart key response scenario. Based on the default frequency, it sends a first high-frequency test signal to the PEPS controller. After parsing, the signal is written to a designated memory address. The offline testing equipment accesses the designated memory address to obtain the parsing result of the first signal for validity verification. Upon successful verification, it sends a frequency switching command to the PEPS controller to modify the high-frequency setting to the backup frequency configuration parameters. The offline testing equipment switches from the default frequency to the backup frequency and sends a second high-frequency test signal to the PEPS controller based on the backup frequency. After parsing, the signal is written to a designated memory address. The offline testing equipment accesses the designated memory address to obtain the parsing result of the second signal for validity verification. This invention achieves multi-frequency testing, which helps PEPS effectively avoid co-frequency interference problems through a multi-frequency dynamic switching mechanism.

Description

Technical Field

[0001] This invention relates to the field of automotive electronics technology, and more specifically, to a multi-frequency testing method and related apparatus for PEPS production. Background Technology

[0002] The existing PEPS (Passive Entry Passive Start) system in vehicles consists of a PEPS controller and a smart key. PEPS typically uses a single-frequency high-frequency signal interaction mechanism to achieve communication between the PEPS controller and the smart key. Specifically, the PEPS controller emits a low-frequency signal to locate the smart key. Upon receiving the low-frequency signal, the smart key sends a high-frequency signal to the PEPS controller. After receiving the high-frequency signal from the smart key, the PEPS controller verifies its validity and, if successful, allows entry or starting of the vehicle.

[0003] While existing technologies meet the basic requirements for keyless entry and start of vehicles to a certain extent, they have certain shortcomings in practical applications. Third-party devices installed by users, such as GPS (Global Positioning System) trackers, wireless charging devices, Tire Pressure Monitoring Systems (TPMS), and remote headlight controllers, may emit high-frequency signals at the same frequency as the smart key. This can cause the PEPS controller to be unable to distinguish whether the received high-frequency signal is from the smart key or interference from the third-party device, resulting in vehicle starting failure. This is because PEPS relies on a single fixed-frequency signal for communication; if this frequency is interfered with, the entire PEPS will malfunction, lacking redundancy and fault tolerance.

[0004] Currently, to address the co-channel interference issue caused by a single fixed frequency point, effectiveness testing of that single fixed frequency point is typically performed during the PEPS production process. However, the inventors discovered through research that testing with a single fixed frequency point can still lead to unpredictable malfunctions in practical applications, thus affecting the reliability of the PEPS and negatively impacting the user experience. Summary of the Invention

[0005] In view of this, the present invention discloses a multi-frequency testing method and related apparatus for PEPS production process, so as to realize multi-frequency testing during PEPS production process, which can cover all frequencies supported by PEPS, ensure the comprehensiveness and stability of testing, and help PEPS to effectively avoid co-frequency interference problems through multi-frequency dynamic switching mechanism, improve the anti-interference capability and overall reliability of PEPS, thereby reducing the vehicle start failure rate caused by interference.

[0006] A multi-frequency testing method for PEPS production process, applied to an off-line inspection device, wherein the off-line inspection device is connected to a PEPS controller as the device under test, and the testing method includes:

[0007] Using the default high-frequency configuration parameters of the simulated smart key response scenario, a corresponding first high-frequency test signal is sent to the PEPS controller according to the default frequency point;

[0008] Access a specified memory address of the PEPS controller and obtain the first signal parsing result written to the specified memory address, wherein the first signal parsing result is obtained by the PEPS controller after parsing the received first high-frequency test signal;

[0009] The validity of the first signal parsing result is verified, and after the verification is successful, a frequency switching command is sent to the PEPS controller, so that the PEPS controller modifies the corresponding high-frequency setting to the backup frequency configuration parameter according to the frequency switching command.

[0010] Switch from the default frequency to the backup frequency, and send the corresponding second high-frequency test signal to the PEPS controller according to the backup frequency;

[0011] The specified memory address is accessed again, and the second signal parsing result written to the specified memory address is obtained and its validity is verified. The second signal parsing result is obtained by the PEPS controller after parsing the received second high-frequency test signal.

[0012] Optionally, accessing a specified memory address of the PEPS controller and obtaining the first signal parsing result written to the specified memory address includes:

[0013] Send CCP request information to the PEPS controller;

[0014] Obtain the parsing result of the first signal read from the specified memory address and sent by the PEPS controller after receiving the CCP request information.

[0015] Optionally, the step of verifying the validity of the first signal parsing result and sending a frequency switching command to the PEPS controller after successful verification, causing the PEPS controller to modify the corresponding high-frequency setting to the backup frequency configuration parameter according to the frequency switching command, includes:

[0016] The first signal analysis result is matched with preset valid conditions;

[0017] If the first signal parsing result matches the preset valid condition, the first signal parsing result is determined to have passed the validity verification.

[0018] A frequency switching command is sent to the PEPS controller to write the switched backup frequency configuration information to a specified configurable address of the PEPS controller. The PEPS controller then identifies the high-frequency setting to be modified from the backup frequency configuration information and modifies the high-frequency setting to the backup frequency configuration parameter.

[0019] A multi-frequency testing method for PEPS production process, applied to a PEPS controller used as the device under test, wherein the PEPS controller is connected to an offline testing device, the testing method comprising:

[0020] The device receives a first high-frequency test signal sent by the offline detection device. The first high-frequency test signal is sent by the offline detection device to the PEPS controller according to the default high-frequency configuration parameters of the simulated smart key response scenario.

[0021] The first high-frequency test signal is analyzed to obtain the first signal analysis result, and the first signal analysis result is written to a specified memory address;

[0022] When the offline detection device accesses the specified memory address, the first signal parsing result is sent to the offline detection device, and the offline detection device verifies the validity of the first signal parsing result.

[0023] After the offline testing device verifies the validity of the first signal parsing result, it sends a frequency switching command;

[0024] According to the frequency switching command, the corresponding high-frequency settings are modified to the backup frequency configuration parameters;

[0025] The system receives a second high-frequency test signal sent by the offline testing device. The second high-frequency test signal is sent to the PEPS controller by the offline testing device after switching from the default frequency point to the backup frequency point.

[0026] The second high-frequency test signal is parsed to obtain the second signal parsing result, and the second signal parsing result is written to the specified memory address;

[0027] When the offline detection device accesses the specified memory address, the second signal parsing result is sent to the offline detection device, and the offline detection device verifies the validity of the second signal parsing result.

[0028] Optionally, modifying the corresponding high-frequency settings to the backup frequency configuration parameters according to the frequency switching instruction includes:

[0029] Write the backup frequency configuration information after switching to the specified configurable address according to the frequency switching instruction;

[0030] Identify the high-frequency settings to be modified from the backup frequency configuration information;

[0031] And modify the high-frequency settings to the backup frequency point configuration parameters.

[0032] A multi-frequency testing device for PEPS production process, applied to an off-line inspection device, wherein the off-line inspection device is connected to a PEPS controller, which is the device under test, and the testing device includes:

[0033] The first signal transmitting unit is used to send a corresponding first high-frequency test signal to the PEPS controller according to the default frequency point using the default high-frequency configuration parameters of the simulated smart key response scenario.

[0034] The first parsing result acquisition unit is used to access a specified memory address of the PEPS controller and acquire the first signal parsing result written to the specified memory address, wherein the first signal parsing result is obtained by the PEPS controller after parsing the received first high-frequency test signal;

[0035] The switching instruction sending unit is used to verify the validity of the first signal parsing result, and after the verification is passed, sends a frequency switching instruction to the PEPS controller, so that the PEPS controller modifies the corresponding high-frequency setting to the backup frequency configuration parameter according to the frequency switching instruction.

[0036] The second signal transmitting unit is used to switch from the default frequency point to the backup frequency point, and send a corresponding second high-frequency test signal to the PEPS controller according to the backup frequency point;

[0037] The second parsing result acquisition unit is used to access the specified memory address again, acquire the second signal parsing result written to the specified memory address and verify its validity, wherein the second signal parsing result is obtained by the PEPS controller after parsing the received second high-frequency test signal.

[0038] A device for detecting offline operation includes: a high-frequency wireless signal generator and a CCP main device connected together;

[0039] The high-frequency wireless signal generator is used to send a corresponding first high-frequency test signal to the PEPS controller according to the default high-frequency configuration parameters of the simulated smart key response scenario; it is also used to send a corresponding second high-frequency test signal to the PEPS controller according to the backup frequency.

[0040] The CCP master device is used to access a specified memory address of the PEPS controller and obtain a first signal parsing result written to the specified memory address, wherein the first signal parsing result is obtained by the PEPS controller after parsing the received first high-frequency test signal; verify the validity of the first signal parsing result, and after successful verification, send a frequency switching command to the PEPS controller, causing the PEPS controller to modify the corresponding high-frequency setting to the backup frequency configuration parameter according to the frequency switching command; switch from the default frequency to the backup frequency; access the specified memory address again, obtain a second signal parsing result written to the specified memory address and verify its validity, wherein the second signal parsing result is obtained by the PEPS controller after parsing the received second high-frequency test signal.

[0041] A multi-frequency testing device for PEPS production process, applied to a PEPS controller, wherein the PEPS controller is connected to an offline testing device, the testing device comprising:

[0042] The first signal receiving unit is used to receive the first high-frequency test signal sent by the offline detection device. The first high-frequency test signal is sent by the offline detection device to the PEPS controller according to the default high-frequency configuration parameters of the simulated smart key response scenario.

[0043] The first signal parsing unit is used to parse the first high-frequency test signal to obtain a first signal parsing result, and write the first signal parsing result to a specified memory address;

[0044] The first signal parsing result sending unit is used to send the first signal parsing result to the offline detection device when the offline detection device accesses the specified memory address, so that the offline detection device can verify the validity of the first signal parsing result;

[0045] The switching instruction acquisition unit is used to acquire the frequency switching instruction sent by the offline detection device after verifying the validity of the first signal parsing result;

[0046] The parameter modification unit is used to modify the corresponding high-frequency settings to the backup frequency configuration parameters according to the frequency switching instruction.

[0047] The second signal receiving unit is used to receive the second high-frequency test signal sent by the offline testing device. The second high-frequency test signal is sent by the PEPS controller according to the backup frequency after the offline testing device switches from the default frequency point to the backup frequency point.

[0048] The second signal parsing unit is used to parse the second high-frequency test signal to obtain a second signal parsing result, and write the second signal parsing result to the specified memory address;

[0049] The second signal parsing result sending unit is used to send the second signal parsing result to the offline detection device when the offline detection device accesses the specified memory address, so that the offline detection device can verify the validity of the second signal parsing result.

[0050] A PEPS controller includes: a high-frequency wireless signal receiver and a CCP slave device connected to each other;

[0051] The high-frequency wireless signal receiver is configured to receive a first high-frequency test signal sent by the offline detection device, wherein the first high-frequency test signal is sent by the offline detection device to the PEPS controller according to the default high-frequency configuration parameters of the simulated smart key response scenario; parse the first high-frequency test signal to obtain a first signal parsing result, and write the first signal parsing result to a designated memory address of the CCP slave device; and further configured to receive a second high-frequency test signal sent by the offline detection device, wherein the second high-frequency test signal is sent by the PEPS controller according to the backup frequency after the offline detection device switches from the default frequency to the backup frequency; parse the second high-frequency test signal to obtain a second signal parsing result, and write the second signal parsing result to the designated memory address.

[0052] The CCP slave device is configured to: send the first signal parsing result to the offline detection device when the offline detection device accesses the designated memory address, so that the offline detection device can verify the validity of the first signal parsing result; obtain a frequency switching instruction sent by the offline detection device after the offline detection device has verified the validity of the first signal parsing result; modify the corresponding high-frequency setting to the backup frequency configuration parameter according to the frequency switching instruction; and also be configured to send the second signal parsing result to the offline detection device when the offline detection device accesses the designated memory address, so that the offline detection device can verify the validity of the second signal parsing result.

[0053] A multi-frequency testing system for PEPS production process includes: the off-line testing equipment described above, and the PEPS controller described above.

[0054] The offline testing equipment and the PEPS controller are connected via a controller local area network bus;

[0055] The offline testing device is loaded with a test script, which includes test cases for the default frequency point and the backup frequency point.

[0056] The PEPS controller is configured with a multi-band receiving channel to support the reception of high-frequency signals from multiple frequency bands.

[0057] As can be seen from the above technical solution, this invention discloses a multi-frequency testing method and related apparatus in the PEPS production process. During the default frequency testing phase, the offline testing equipment uses the default high-frequency configuration parameters of a simulated smart key response scenario to send a corresponding first high-frequency test signal to the PEPS controller based on the default frequency. The PEPS controller parses the received first high-frequency test signal and writes it to a designated memory address. The offline testing equipment accesses the designated memory address of the PEPS controller and obtains the parsing result of the first signal written to the designated memory address, verifying the validity of the first signal parsing result. After successful verification, it enters the frequency switching phase. By sending a frequency switching command to the PEPS controller, the PEPS controller modifies the corresponding high-frequency setting to the backup frequency configuration parameters according to the frequency switching command. After switching from the default frequency to the backup frequency, the offline testing equipment enters the backup frequency testing phase. The offline testing equipment sends a corresponding second high-frequency test signal to the PEPS controller based on the backup frequency. The PEPS controller parses the received second high-frequency test signal and writes it to a designated memory address. The offline testing equipment accesses the designated memory address of the PEPS controller again and obtains the parsing result of the second signal written to the designated memory address for validity verification. This invention enables multi-frequency testing during PEPS production, covering all frequencies supported by PEPS, ensuring comprehensiveness and stability during testing. It helps PEPS effectively avoid co-frequency interference through a multi-frequency dynamic switching mechanism, improving PEPS's anti-interference capability and overall reliability, thereby reducing the vehicle start-up failure rate caused by interference. Attached Figure Description

[0058] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the published drawings without creative effort.

[0059] Figure 1 This is an architecture diagram of a multi-frequency testing system for PEPS production process disclosed in an embodiment of the present invention;

[0060] Figure 2 This is a flowchart of a multi-frequency testing method for PEPS production, as disclosed in an embodiment of the present invention.

[0061] Figure 3 This is a flowchart of another multi-frequency testing method in the PEPS production process disclosed in an embodiment of the present invention;

[0062] Figure 4 This is a schematic diagram of a multi-frequency testing device for PEPS production process disclosed in an embodiment of the present invention;

[0063] Figure 5 This is a schematic diagram of another multi-frequency testing device for PEPS production process disclosed in an embodiment of the present invention;

[0064] Figure 6 This is an architecture diagram of another multi-frequency testing system for PEPS production process disclosed in an embodiment of the present invention. Detailed Implementation

[0065] Currently, to address the co-channel interference problem caused by a single fixed frequency point, effectiveness testing of that single fixed frequency point is typically performed during PEPS production. However, the inventors discovered through research that single fixed frequency point testing still leads to unpredictable malfunctions in PEPS during practical applications, affecting PEPS reliability and negatively impacting user experience. Further research revealed that multi-frequency point testing can effectively solve this deficiency. However, existing testing procedures are relatively rigid and lack flexibility, making it difficult to construct an effective production testing mechanism to verify multi-frequency points. Therefore, this invention provides a multi-frequency point testing method and related apparatus for PEPS production. This method and apparatus enable multi-frequency point testing during PEPS production, covering all frequencies supported by the PEPS, ensuring comprehensiveness and stability during testing. It helps the PEPS effectively avoid co-channel interference through a dynamic multi-frequency point switching mechanism, improving the PEPS's anti-interference capability and overall reliability, thereby reducing the vehicle start-up failure rate caused by interference.

[0066] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0067] See Figure 1The present invention discloses an architecture diagram of a multi-frequency testing system in the PEPS production process. The testing system includes: an end-of-line equipment (EOL) 10 and a PEPS controller 20.

[0068] The offline testing device 10 and the PEPS controller 20 are connected via a CAN (Controller Area Network) bus.

[0069] The CAN bus is used by the offline testing device 10 to send commands (e.g., frequency switching commands) to the PEPS controller 20 according to the CCP (CAN Calibration Protocol) and to verify the signal parsing results obtained by the PEPS controller 20 from parsing the high-frequency test signals.

[0070] The offline testing device 10 is loaded with test scripts, which include test cases for the default frequency and the backup frequency.

[0071] In practical applications, the default frequency and the backup frequency are different frequency points and both are single frequency points.

[0072] The backup frequency is any one of all the frequencies that the PEPS controller 20 needs to support.

[0073] The PEPS controller is configured with a multi-band receiving channel, supporting the reception of high-frequency signals from multiple frequency bands.

[0074] The offline testing device 10 is used to send high-frequency test signals (including: a first high-frequency test signal and a second high-frequency test signal) and instructions (e.g., frequency switching instructions) to the PEPS controller 20 via the CAN bus, and to verify the validity of the signal parsing results obtained by parsing the high-frequency test signals in the PEPS controller 20.

[0075] The PEPS controller 20 is used to receive high-frequency test signals sent by the offline testing equipment 10, and to parse the high-frequency test signals and store them in a specified memory address; it is also used to execute corresponding operations according to the instructions sent by the offline testing equipment 10.

[0076] It should be noted that in this application, the offline testing device 10 is used as the testing device, and the PEPS controller 20 is used as the device under test. The offline testing device 10 and the PEPS controller 20 are connected via a CAN bus to ensure data reception and verification. Test scripts are loaded into the offline testing device 10 to complete the initialization of the test environment.

[0077] To facilitate understanding of the multi-frequency testing process in PEPS production, the following is a detailed explanation of the multi-frequency testing methods used in PEPS production:

[0078] See Figure 2 This invention discloses a flowchart of a multi-frequency testing method for PEPS production, which is applied to... Figure 1 The offline testing device in the illustrated embodiment includes the following testing methods:

[0079] Step S101: Using the default high-frequency configuration parameters of the simulated smart key response scenario, send the corresponding first high-frequency test signal to the PEPS controller according to the default frequency point.

[0080] In this embodiment, the default frequency point can be a single fixed frequency point used by the smart key to send high-frequency signals to the PEPS controller in existing smart key response scenarios.

[0081] The default high-frequency configuration parameters are the high-frequency configuration parameters used to generate the first high-frequency test signal in the smart key response scenario, such as signal frequency, modulation method, power, bandwidth, signal format, timing parameters, etc.

[0082] As a testing device, the offline testing equipment uses the default high-frequency configuration parameters of the simulated smart key response scenario to send the corresponding first high-frequency test signal to the PEPS controller through the high-frequency wireless signal generator inside the offline testing equipment according to the default frequency point.

[0083] Step S102: Access the specified memory address of the PEPS controller and obtain the parsing result of the first signal written to the specified memory address.

[0084] The PEPS controller contains a high-frequency wireless signal receiver and a CCP slave device. The PEPS controller receives the first high-frequency test signal sent by the offline detection device via the high-frequency wireless signal receiver, parses the first high-frequency test signal to obtain the first signal parsing result, and writes the first signal parsing result to a designated memory address on the CCP slave device. The offline detection device can retrieve the first signal parsing result by accessing the designated memory address.

[0085] Step S103: Verify the validity of the first signal analysis result, and after the verification is successful, send a frequency switching command to the PEPS controller so that the PEPS controller can modify the corresponding high-frequency setting to the backup frequency configuration parameter according to the frequency switching command.

[0086] The offline testing equipment verifies the validity of the first high-frequency test signal sent to the PEPS controller by checking the validity of the first signal analysis result.

[0087] In practical applications, the offline detection equipment verifies the validity of the first signal analysis result by matching it with preset valid conditions. For example, 1 can be preset to represent a valid condition and 0 to represent an invalid condition. If the first signal analysis result is 1, the first signal analysis result is determined to have passed the validity verification; conversely, if the first signal analysis result is 0, the first signal analysis result is determined to have failed the validity verification.

[0088] In this application, after the offline testing equipment completes the test environment initialization, it enters the default frequency test phase, which includes:

[0089] The offline testing device uses the default high-frequency configuration parameters of the simulated smart key response scenario to send the corresponding first high-frequency test signal to the PEPS controller according to the default frequency point; the PEPS controller parses the first high-frequency test signal to obtain the first signal parsing result and writes the first signal parsing result to a specified memory address; the offline testing device accesses the specified memory address of the PEPS controller, obtains the first signal parsing result written to the specified memory address, and verifies the validity of the first signal parsing result to detect whether the first high-frequency test signal sent to the PEPS controller is valid.

[0090] Once the first signal analysis result passes validity verification, the offline testing equipment enters the frequency switching phase, which includes:

[0091] A frequency switching command is sent to the PEPS controller, causing the PEPS controller to modify the corresponding high-frequency settings to the backup frequency configuration parameters according to the command. The backup frequency configuration parameters include key dimensions such as frequency, modulation, power, timing, and antenna.

[0092] Step S104: Switch from the default frequency to the backup frequency and send the corresponding second high-frequency test signal to the PEPS controller according to the backup frequency.

[0093] After the offline testing equipment switches from the default frequency to the backup frequency, the frequency switching phase ends and the backup frequency testing phase begins.

[0094] In this embodiment, the backup frequency is a frequency used as a backup for the default frequency, and it can also be applied in smart key response scenarios. The backup frequency is also a single frequency, but it is a different frequency from the default frequency. When the default frequency causes co-channel interference, it can be switched to the backup frequency. To ensure the effectiveness of the backup frequency, this embodiment has conducted effectiveness testing on the backup frequency.

[0095] Step S105: Access the specified memory address again, obtain the parsing result of the second signal written to the specified memory address, and verify its validity.

[0096] After the offline testing equipment switches from the default frequency to the backup frequency, it enters the backup frequency testing phase.

[0097] The backup frequency testing phase includes:

[0098] The offline testing device sends a corresponding second high-frequency test signal to the PEPS controller via a high-frequency wireless signal generator based on the spare frequency. The PEPS controller receives the second high-frequency test signal sent by the offline testing device via a high-frequency wireless signal receiver, parses the second high-frequency test signal to obtain the second signal parsing result, and writes the second signal parsing result to a designated memory address of the CCP slave device. The offline testing device can obtain the second signal parsing result by accessing the designated memory address again, and verify the validity of the second high-frequency test signal sent to the PEPS controller by validating the second signal parsing result.

[0099] In summary, this invention discloses a multi-frequency testing method for PEPS production. During the default frequency testing phase, the offline testing device uses the default high-frequency configuration parameters of a simulated smart key response scenario to send a corresponding first high-frequency test signal to the PEPS controller based on the default frequency. The PEPS controller parses the received first high-frequency test signal and writes it to a designated memory address. The offline testing device accesses the designated memory address of the PEPS controller and obtains the parsing result of the first signal written to the designated memory address, verifying the validity of the first signal parsing result. After successful verification, it enters the frequency switching phase. By sending a frequency switching command to the PEPS controller, the PEPS controller modifies the corresponding high-frequency setting to the backup frequency configuration parameters according to the frequency switching command. After switching from the default frequency to the backup frequency, the offline testing device enters the backup frequency testing phase. The offline testing device sends a corresponding second high-frequency test signal to the PEPS controller based on the backup frequency. The PEPS controller parses the received second high-frequency test signal and writes it to a designated memory address. The offline testing device accesses the designated memory address of the PEPS controller again and obtains the parsing result of the second signal written to the designated memory address for validity verification. This invention enables multi-frequency testing during PEPS production, covering all frequencies supported by PEPS, ensuring comprehensiveness and stability during testing. It helps PEPS effectively avoid co-frequency interference through a multi-frequency dynamic switching mechanism, improving PEPS's anti-interference capability and overall reliability, thereby reducing the vehicle start-up failure rate caused by interference.

[0100] In one embodiment, step S102 may specifically include:

[0101] (1) Send CCP request information to the PEPS controller.

[0102] (2) Obtain the parsing result of the first signal read from the specified memory address and sent by the PEPS controller after receiving the CCP request information.

[0103] In this application, the offline testing equipment is equipped with a CCP master device. The offline testing equipment sends CCP request information to the PEPS controller through the CCP master device to request the PEPS controller to write the first signal parsing result to a specified memory address. After receiving the CCP request information, the CCP slave device of the PEPS controller reads the first signal parsing result from the specified memory address and sends the first signal parsing result to the CCP master device so that the CCP master device can verify the validity of the first signal parsing result, thereby completing the test process at the default frequency point.

[0104] The CCP request information includes identification information of the first signal parsing result.

[0105] In one embodiment, step S103 may specifically include:

[0106] (1) Match the first signal analysis result with the preset valid conditions.

[0107] In practical applications, the offline detection equipment verifies the validity of the first signal analysis result by matching it with preset valid conditions. For example, 1 can be preset to represent a valid condition and 0 to represent an invalid condition. If the first signal analysis result is 1, the first signal analysis result is determined to have passed the validity verification; conversely, if the first signal analysis result is 0, the first signal analysis result is determined to have failed the validity verification.

[0108] (2) If the first signal analysis result matches the preset valid conditions, the first signal analysis result is determined to have passed the validity verification.

[0109] (3) Send a frequency switching command to the PEPS controller to write the backup frequency configuration information after switching to the specified configurable address of the PEPS controller. The PEPS controller will then identify the high-frequency setting to be modified from the backup frequency configuration information and modify the high-frequency setting to the backup frequency configuration parameter.

[0110] After confirming the validity of the first signal analysis result, the offline testing equipment completes the default frequency test phase and enters the frequency switching phase. During the frequency switching phase, the offline testing equipment sends a frequency switching command to the PEPS controller via the CCP protocol, writing the switched-off backup frequency configuration information to a specified configurable address of the PEPS controller. The PEPS controller identifies the high-frequency setting to be modified from the backup frequency configuration information and modifies the high-frequency setting to the backup frequency configuration parameters, thus completing the switch from the default frequency to the backup frequency in the PEPS controller. Simultaneously, the offline testing equipment switches from the default frequency to the backup frequency and enters the backup frequency test phase. The testing process for the backup frequency is similar to that for the default frequency and will not be described in detail here.

[0111] See Figure 3 The present invention discloses another multi-frequency testing method flowchart for PEPS production process, which is applied to... Figure 1 The PEPS controller in the illustrated embodiment is tested using the following method:

[0112] Step S201: Receive the first high-frequency test signal sent by the offline testing equipment.

[0113] The first high-frequency test signal is sent to the PEPS controller by the offline testing equipment using the default high-frequency configuration parameters of the simulated smart key response scenario, based on the default frequency point.

[0114] In this embodiment, the default frequency point can be a single fixed frequency point used by the smart key to send high-frequency signals to the PEPS controller in existing smart key response scenarios.

[0115] The default high-frequency configuration parameters are the high-frequency configuration parameters used to generate the first high-frequency test signal in the smart key response scenario, such as signal frequency, modulation method, power, bandwidth, signal format, timing parameters, etc.

[0116] As a testing device, the offline testing equipment uses the default high-frequency configuration parameters of the simulated smart key response scenario to send the corresponding first high-frequency test signal to the PEPS controller through the high-frequency wireless signal generator inside the offline testing equipment according to the default frequency point.

[0117] Step S202: Analyze the first high-frequency test signal to obtain the first signal analysis result, and write the first signal analysis result to the specified memory address.

[0118] The PEPS controller is equipped with a high-frequency wireless signal receiver and a CCP slave device. The PEPS controller receives the first high-frequency test signal sent by the offline detection device through the high-frequency wireless signal receiver, parses the first high-frequency test signal to obtain the first signal parsing result, and writes the first signal parsing result to the specified memory address of the CCP slave device.

[0119] Step S203: When the offline detection device accesses the specified memory address, the first signal parsing result is sent to the offline detection device, and the offline detection device verifies the validity of the first signal parsing result.

[0120] The offline testing device can obtain the first signal parsing result by accessing a specified memory address. The device then verifies the validity of the first signal parsing result to determine whether the first high-frequency test signal sent to the PEPS controller is valid.

[0121] In practical applications, the offline detection equipment verifies the validity of the first signal analysis result by matching it with preset valid conditions. For example, 1 can be preset to represent a valid condition and 0 to represent an invalid condition. If the first signal analysis result is 1, the first signal analysis result is determined to have passed the validity verification; conversely, if the first signal analysis result is 0, the first signal analysis result is determined to have failed the validity verification.

[0122] Step S204: Obtain the frequency switching command sent after the offline testing equipment verifies the validity of the first signal analysis result.

[0123] After the offline testing equipment verifies the validity of the first signal analysis result, the default frequency point test phase is completed, and the frequency band switching phase begins.

[0124] The frequency switching phase includes: the offline testing equipment sends a frequency switching command to the PEPS controller, which then modifies the corresponding high-frequency settings to the backup frequency configuration parameters according to the frequency switching command. The backup frequency configuration parameters include key dimensions such as frequency, modulation, power, timing, and antenna.

[0125] Step S205: Modify the corresponding high-frequency settings to the backup frequency configuration parameters according to the frequency switching command.

[0126] The frequency switching command carries backup frequency configuration parameters.

[0127] Step S206: Receive the second high-frequency test signal sent by the offline testing equipment.

[0128] The second high-frequency test signal is sent to the PEPS controller after the offline testing equipment switches from the default frequency point to the backup frequency point.

[0129] The offline testing equipment sends a frequency switching command to the PEPS controller. Simultaneously, the PEPS controller modifies the corresponding high-frequency settings to the backup frequency configuration parameters based on the command. After switching from the default frequency to the backup frequency, the offline testing equipment ends the frequency switching phase and enters the backup frequency testing phase. The backup frequency testing phase is similar to the default frequency testing phase; the offline testing equipment sends a second high-frequency test signal to the PEPS controller based on the backup frequency.

[0130] It should be noted that the second high-frequency test signal is a different test signal from the first high-frequency test signal.

[0131] In this embodiment, the backup frequency is a frequency used as a backup for the default frequency, and it can also be applied in smart key response scenarios. The backup frequency is also a single frequency, but it is a different frequency from the default frequency. When the default frequency causes co-channel interference, it can be switched to the backup frequency. To ensure the effectiveness of the backup frequency, this embodiment has conducted effectiveness testing on the backup frequency.

[0132] Step S207: Analyze the second high-frequency test signal to obtain the second signal analysis result, and write the second signal analysis result to the specified memory address.

[0133] The PEPS controller receives the second high-frequency test signal sent by the offline detection device through a high-frequency wireless signal receiver, parses the second high-frequency test signal to obtain the second signal parsing result, and writes the second signal parsing result to a specified memory address of the CCP slave device.

[0134] Step S208: When the offline detection device accesses the specified memory address, the second signal parsing result is sent to the offline detection device, and the offline detection device verifies the validity of the second signal parsing result.

[0135] The offline testing device can obtain the second signal parsing result by accessing the specified memory address again. By verifying the validity of the second signal parsing result, it checks whether the second high-frequency test signal sent to the PEPS controller is valid. After obtaining the validity verification result of the second high-frequency test signal, the offline testing device outputs the final test results for the default and backup frequency points for technicians to review.

[0136] The spare frequency testing phase in this application includes:

[0137] The offline testing device sends a corresponding second high-frequency test signal to the PEPS controller via a high-frequency wireless signal generator based on the spare frequency. The PEPS controller receives the second high-frequency test signal sent by the offline testing device via a high-frequency wireless signal receiver, parses the second high-frequency test signal to obtain the second signal parsing result, and writes the second signal parsing result to a designated memory address of the CCP slave device. The offline testing device can obtain the second signal parsing result by accessing the designated memory address again, and verify the validity of the second high-frequency test signal sent to the PEPS controller by validating the second signal parsing result.

[0138] In summary, this invention discloses a multi-frequency testing method for PEPS production. During the default frequency testing phase, the offline testing device uses the default high-frequency configuration parameters of a simulated smart key response scenario to send a corresponding first high-frequency test signal to the PEPS controller based on the default frequency. The PEPS controller parses the received first high-frequency test signal and writes it to a designated memory address. The offline testing device accesses the designated memory address of the PEPS controller and obtains the parsing result of the first signal written to the designated memory address, verifying the validity of the first signal parsing result. After successful verification, it enters the frequency switching phase. By sending a frequency switching command to the PEPS controller, the PEPS controller modifies the corresponding high-frequency setting to the backup frequency configuration parameters according to the frequency switching command. After switching from the default frequency to the backup frequency, the offline testing device enters the backup frequency testing phase. The offline testing device sends a corresponding second high-frequency test signal to the PEPS controller based on the backup frequency. The PEPS controller parses the received second high-frequency test signal and writes it to a designated memory address. The offline testing device accesses the designated memory address of the PEPS controller again and obtains the parsing result of the second signal written to the designated memory address for validity verification. This invention enables multi-frequency testing during PEPS production, covering all frequencies supported by PEPS, ensuring comprehensiveness and stability during testing. It helps PEPS effectively avoid co-frequency interference through a multi-frequency dynamic switching mechanism, improving PEPS's anti-interference capability and overall reliability, thereby reducing the vehicle start-up failure rate caused by interference.

[0139] In one embodiment, step S205 may specifically include:

[0140] (1) Write the backup frequency configuration information after switching to the specified configurable address according to the frequency switching instruction.

[0141] (2) Identify the high-frequency settings to be modified from the backup frequency configuration information.

[0142] (3) And change the high frequency setting to the backup frequency configuration parameter.

[0143] The offline testing equipment sends a frequency switching command to the PEPS controller via the CCP protocol to write the backup frequency configuration information to the specified configurable address of the PEPS controller. The PEPS controller identifies the high-frequency setting to be modified from the backup frequency configuration information and modifies the high-frequency setting to the backup frequency configuration parameter, thereby completing the switching from the default frequency to the backup frequency in the PEPS controller.

[0144] The frequency switching command carries backup frequency configuration parameters. These parameters include, for example, the center frequency, modulation parameters, modulation index, and coding format.

[0145] To facilitate understanding of the multi-frequency testing process in PEPS production, the following describes each stage involved in the testing process:

[0146] (I) Test Environment Initialization

[0147] The offline testing equipment is connected to the PEPS controller via a CAN bus to ensure data reception and verification; test scripts, including test cases for the default frequency and the backup frequency, are loaded into the offline testing equipment.

[0148] (II) Default Frequency Point Testing Phase

[0149] After completing the test environment initialization, the offline testing equipment enters the default frequency test phase, which includes:

[0150] The offline testing device uses the default high-frequency configuration parameters of the simulated smart key response scenario to send the corresponding first high-frequency test signal to the PEPS controller according to the default frequency point; the PEPS controller parses the first high-frequency test signal to obtain the first signal parsing result and writes the first signal parsing result to a specified memory address; the offline testing device accesses the specified memory address of the PEPS controller, obtains the first signal parsing result written to the specified memory address, and verifies the validity of the first signal parsing result to detect whether the first high-frequency test signal sent to the PEPS controller is valid.

[0151] (III) Frequency Switching Phase

[0152] Once the first signal analysis result passes validity verification, the offline testing equipment enters the frequency switching phase, which includes:

[0153] Send a frequency switching command to the PEPS controller, so that the PEPS controller can modify the corresponding high-frequency settings to the backup frequency configuration parameters according to the frequency switching command.

[0154] At the same time, the offline testing equipment was switched from the default frequency to the backup frequency.

[0155] (iv) Backup frequency testing phase

[0156] The offline testing device sends a corresponding second high-frequency test signal to the PEPS controller via a high-frequency wireless signal generator based on the spare frequency. The PEPS controller receives the second high-frequency test signal sent by the offline testing device via a high-frequency wireless signal receiver, parses the second high-frequency test signal to obtain the second signal parsing result, and writes the second signal parsing result to a designated memory address of the CCP slave device. The offline testing device can obtain the second signal parsing result by accessing the designated memory address again, and verify the validity of the second high-frequency test signal sent to the PEPS controller by validating the second signal parsing result.

[0157] Corresponding to the above embodiments, the present invention also discloses a multi-frequency testing device for PEPS production process.

[0158] See Figure 4 This invention discloses a schematic diagram of a multi-frequency testing device for PEPS production. This device is used in the offline testing equipment of a multi-frequency testing system during PEPS production. The testing device includes:

[0159] The first signal transmitting unit 301 is used to send the corresponding first high-frequency test signal to the PEPS controller according to the default frequency point by utilizing the default high-frequency configuration parameters of the simulated smart key response scenario.

[0160] The first parsing result acquisition unit 302 is used to access a specified memory address of the PEPS controller and acquire the first signal parsing result written to the specified memory address. The first signal parsing result is obtained by the PEPS controller after parsing the received first high-frequency test signal.

[0161] The switching instruction sending unit 303 is used to verify the validity of the first signal parsing result, and after the verification is passed, sends a frequency switching instruction to the PEPS controller, so that the PEPS controller modifies the corresponding high-frequency setting to the backup frequency configuration parameter according to the frequency switching instruction.

[0162] The second signal transmitting unit 304 is used to switch from the default frequency point to the backup frequency point and send the corresponding second high-frequency test signal to the PEPS controller according to the backup frequency point.

[0163] The second parsing result acquisition unit 305 is used to access the specified memory address again, acquire the second signal parsing result written to the specified memory address and verify its validity. The second signal parsing result is obtained by the PEPS controller after parsing the received second high-frequency test signal.

[0164] In summary, this invention discloses a multi-frequency testing device for PEPS production. During the default frequency testing phase, the offline testing device uses the default high-frequency configuration parameters of a simulated smart key response scenario to send a corresponding first high-frequency test signal to the PEPS controller based on the default frequency. The PEPS controller parses the received first high-frequency test signal and writes it to a designated memory address. The offline testing device accesses the designated memory address of the PEPS controller and obtains the parsing result of the first signal written to the designated memory address, verifying the validity of the first signal parsing result. After successful verification, it enters the frequency switching phase. By sending a frequency switching command to the PEPS controller, the PEPS controller modifies the corresponding high-frequency setting to the backup frequency configuration parameters according to the frequency switching command. After switching from the default frequency to the backup frequency, the offline testing device enters the backup frequency testing phase. The offline testing device sends a corresponding second high-frequency test signal to the PEPS controller based on the backup frequency. The PEPS controller parses the received second high-frequency test signal and writes it to a designated memory address. The offline testing device accesses the designated memory address of the PEPS controller again and obtains the parsing result of the second signal written to the designated memory address for validity verification. This invention enables multi-frequency testing during PEPS production, covering all frequencies supported by PEPS, ensuring comprehensiveness and stability during testing. It helps PEPS effectively avoid co-frequency interference through a multi-frequency dynamic switching mechanism, improving PEPS's anti-interference capability and overall reliability, thereby reducing the vehicle start-up failure rate caused by interference.

[0165] Corresponding to the above embodiments, the present invention also discloses a multi-frequency testing device for PEPS production process.

[0166] See Figure 5 This invention discloses a multi-frequency testing device for PEPS production processes, which is applied to... Figure 1 The PEPS controller in the illustrated embodiment includes a testing apparatus comprising:

[0167] The first signal receiving unit 401 is used to receive the first high-frequency test signal sent by the offline testing device. The first high-frequency test signal is sent by the offline testing device to the PEPS controller according to the default high-frequency configuration parameters of the simulated smart key response scenario.

[0168] The first signal parsing unit 402 is used to parse the first high-frequency test signal to obtain the first signal parsing result, and write the first signal parsing result to a specified memory address.

[0169] The first signal parsing result sending unit 403 is used to send the first signal parsing result to the offline detection device when the offline detection device accesses a specified memory address, so that the offline detection device can verify the validity of the first signal parsing result.

[0170] The switching instruction acquisition unit 404 is used to acquire the frequency switching instruction sent by the offline testing equipment after verifying the validity of the first signal analysis result.

[0171] The parameter modification unit 405 is used to modify the corresponding high-frequency settings to the backup frequency configuration parameters according to the frequency switching command.

[0172] The second signal receiving unit 406 is used to receive the second high-frequency test signal sent by the offline testing equipment. The second high-frequency test signal is sent by the offline testing equipment after switching from the default frequency point to the backup frequency point according to the backup frequency point PEPS controller.

[0173] The second signal parsing unit 407 is used to parse the second high-frequency test signal to obtain the second signal parsing result, and write the second signal parsing result to a specified memory address.

[0174] The second signal parsing result sending unit 408 is used to send the second signal parsing result to the offline detection device when the offline detection device accesses a specified memory address, so that the offline detection device can verify the validity of the second signal parsing result.

[0175] In summary, this invention discloses a multi-frequency testing method for PEPS production. During the default frequency testing phase, the offline testing device uses the default high-frequency configuration parameters of a simulated smart key response scenario to send a corresponding first high-frequency test signal to the PEPS controller based on the default frequency. The PEPS controller parses the received first high-frequency test signal and writes it to a designated memory address. The offline testing device accesses the designated memory address of the PEPS controller and obtains the parsing result of the first signal written to the designated memory address, verifying the validity of the first signal parsing result. After successful verification, it enters the frequency switching phase. By sending a frequency switching command to the PEPS controller, the PEPS controller modifies the corresponding high-frequency setting to the backup frequency configuration parameters according to the frequency switching command. After switching from the default frequency to the backup frequency, the offline testing device enters the backup frequency testing phase. The offline testing device sends a corresponding second high-frequency test signal to the PEPS controller based on the backup frequency. The PEPS controller parses the received second high-frequency test signal and writes it to a designated memory address. The offline testing device accesses the designated memory address of the PEPS controller again and obtains the parsing result of the second signal written to the designated memory address for validity verification. This invention enables multi-frequency testing during PEPS production, covering all frequencies supported by PEPS, ensuring comprehensiveness and stability during testing. It helps PEPS effectively avoid co-frequency interference through a multi-frequency dynamic switching mechanism, improving PEPS's anti-interference capability and overall reliability, thereby reducing the vehicle start-up failure rate caused by interference.

[0176] It should be noted, and especially noted, that the specific working principles of each component in the multi-frequency testing device during the PEPS production process of the offline testing equipment are detailed in the corresponding section of the method embodiment, and will not be repeated here.

[0177] See Figure 6 The present invention discloses another architecture diagram of a multi-frequency test system in the PEPS production process. The test system includes: an offline testing device 10 and a PEPS controller 20, which are connected via a CAN bus.

[0178] The offline testing device 10 includes a high-frequency wireless signal generator 11 and a CCP master device 12 connected to each other. The PEPS controller 20 includes a high-frequency wireless signal receiver 21 and a CCP slave device 22 connected to each other.

[0179] The working principles of the high-frequency wireless signal generator 11 and the CCP main device 12 are as follows:

[0180] The high-frequency wireless signal generator 11 is used to send a corresponding first high-frequency test signal to the PEPS controller according to the default high-frequency configuration parameters of the simulated smart key response scenario; it is also used to send a corresponding second high-frequency test signal to the PEPS controller according to the backup frequency.

[0181] CCP master device 12 is used to access a specified memory address of the PEPS controller and obtain the first signal parsing result written to the specified memory address. The first signal parsing result is obtained by the PEPS controller after parsing the received first high-frequency test signal. It verifies the validity of the first signal parsing result and, after successful verification, sends a frequency switching command to the PEPS controller, causing the PEPS controller to modify the corresponding high-frequency setting to the backup frequency configuration parameter according to the frequency switching command. It switches from the default frequency to the backup frequency. It accesses the specified memory address again and obtains the second signal parsing result written to the specified memory address and verifies its validity. The second signal parsing result is obtained by the PEPS controller after parsing the received second high-frequency test signal.

[0182] The working principles of the high-frequency wireless signal receiver 21 and the CCP slave device 22 are as follows:

[0183] The high-frequency wireless signal receiver 21 is used to receive a first high-frequency test signal sent by the offline detection device. The first high-frequency test signal is sent by the offline detection device to the PEPS controller according to the default high-frequency configuration parameters of the simulated smart key response scenario. The receiver 21 parses the first high-frequency test signal to obtain a first signal parsing result and writes the first signal parsing result to a designated memory address of the CCP slave device 22. The receiver 21 is also used to receive a second high-frequency test signal sent by the offline detection device. The second high-frequency test signal is sent by the offline detection device according to the PEPS controller after switching from the default frequency point to the backup frequency point. The receiver parses the second high-frequency test signal to obtain a second signal parsing result and writes the second signal parsing result to a designated memory address.

[0184] CCP slave device 22 is used to send a first signal parsing result to the offline detection device when the offline detection device accesses a specified memory address, so that the offline detection device can verify the validity of the first signal parsing result; obtain a frequency switching command sent by the offline detection device after the validity of the first signal parsing result is verified; modify the corresponding high-frequency setting to the backup frequency configuration parameter according to the frequency switching command; and also to send a second signal parsing result to the offline detection device when the offline detection device accesses a specified memory address, so that the offline detection device can verify the validity of the second signal parsing result.

[0185] It should be noted that the specific working principles of the high-frequency wireless signal generator 11, the CCP master device 12, the high-frequency wireless signal receiver 21, and the CCP slave device 22 can be found in the corresponding sections of the method embodiments, and will not be repeated here.

[0186] Finally, it should be noted that in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0187] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on the differences from other embodiments. The same or similar parts between the various embodiments can be referred to each other.

[0188] The above description of the disclosed embodiments enables those skilled in the art to make or use the invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention. Therefore, the invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A multi-frequency testing method for PEPS production process, characterized in that, The method is applied to offline testing equipment, which is connected to a PEPS controller (the device under test). The testing method includes: Using the default high-frequency configuration parameters of the simulated smart key response scenario, a corresponding first high-frequency test signal is sent to the PEPS controller according to the default frequency point; Access a specified memory address of the PEPS controller and obtain the first signal parsing result written to the specified memory address, wherein the first signal parsing result is obtained by the PEPS controller after parsing the received first high-frequency test signal; The validity of the first signal parsing result is verified, and after the verification is successful, a frequency switching command is sent to the PEPS controller, so that the PEPS controller modifies the corresponding high-frequency setting to the backup frequency configuration parameter according to the frequency switching command. Switch from the default frequency to the backup frequency, and send the corresponding second high-frequency test signal to the PEPS controller according to the backup frequency; The specified memory address is accessed again, and the second signal parsing result written to the specified memory address is obtained and its validity is verified. The second signal parsing result is obtained by the PEPS controller after parsing the received second high-frequency test signal.

2. The test method according to claim 1, characterized in that, The step of accessing a specified memory address of the PEPS controller and obtaining the first signal parsing result written to the specified memory address includes: Send CCP request information to the PEPS controller; Obtain the parsing result of the first signal read from the specified memory address and sent by the PEPS controller after receiving the CCP request information.

3. The test method according to claim 1 or 2, characterized in that, The process of verifying the validity of the first signal parsing result and, upon successful verification, sending a frequency switching command to the PEPS controller, causing the PEPS controller to modify the corresponding high-frequency setting to the backup frequency configuration parameter according to the frequency switching command, includes: The first signal analysis result is matched with preset valid conditions; If the first signal parsing result matches the preset valid condition, the first signal parsing result is determined to have passed the validity verification. A frequency switching command is sent to the PEPS controller to write the switched backup frequency configuration information to a specified configurable address of the PEPS controller. The PEPS controller then identifies the high-frequency setting to be modified from the backup frequency configuration information and modifies the high-frequency setting to the backup frequency configuration parameter.

4. A multi-frequency testing method for PEPS production process, characterized in that, A PEPS controller applied to a device under test, the PEPS controller being connected to an offline testing device, the testing method comprising: The device receives a first high-frequency test signal sent by the offline detection device. The first high-frequency test signal is sent by the offline detection device to the PEPS controller according to the default high-frequency configuration parameters of the simulated smart key response scenario. The first high-frequency test signal is analyzed to obtain the first signal analysis result, and the first signal analysis result is written to a specified memory address; When the offline detection device accesses the specified memory address, the first signal parsing result is sent to the offline detection device, and the offline detection device verifies the validity of the first signal parsing result. After the offline testing device verifies the validity of the first signal parsing result, it sends a frequency switching command; According to the frequency switching command, the corresponding high-frequency settings are modified to the backup frequency configuration parameters; The system receives a second high-frequency test signal sent by the offline testing device. The second high-frequency test signal is sent to the PEPS controller by the offline testing device after switching from the default frequency point to the backup frequency point. The second high-frequency test signal is parsed to obtain the second signal parsing result, and the second signal parsing result is written to the specified memory address; When the offline detection device accesses the specified memory address, the second signal parsing result is sent to the offline detection device, and the offline detection device verifies the validity of the second signal parsing result.

5. The test method according to claim 4, characterized in that, The step of modifying the corresponding high-frequency settings to the backup frequency configuration parameters according to the frequency switching command includes: Write the backup frequency configuration information after switching to the specified configurable address according to the frequency switching instruction; Identify the high-frequency settings to be modified from the backup frequency configuration information; And modify the high-frequency settings to the backup frequency point configuration parameters.

6. A multi-frequency testing device for PEPS production process, characterized in that, An apparatus for use in offline testing equipment, wherein the offline testing equipment is connected to a PEPS controller (which is the device under test), the testing device comprising: The first signal transmitting unit is used to send a corresponding first high-frequency test signal to the PEPS controller according to the default frequency point using the default high-frequency configuration parameters of the simulated smart key response scenario. The first parsing result acquisition unit is used to access a specified memory address of the PEPS controller and acquire the first signal parsing result written to the specified memory address, wherein the first signal parsing result is obtained by the PEPS controller after parsing the received first high-frequency test signal; The switching instruction sending unit is used to verify the validity of the first signal parsing result, and after the verification is passed, sends a frequency switching instruction to the PEPS controller, so that the PEPS controller modifies the corresponding high-frequency setting to the backup frequency configuration parameter according to the frequency switching instruction. The second signal transmitting unit is used to switch from the default frequency point to the backup frequency point, and send a corresponding second high-frequency test signal to the PEPS controller according to the backup frequency point; The second parsing result acquisition unit is used to access the specified memory address again, acquire the second signal parsing result written to the specified memory address and verify its validity, wherein the second signal parsing result is obtained by the PEPS controller after parsing the received second high-frequency test signal.

7. An offline testing device, characterized in that, include: The high-frequency wireless signal generator and the CCP main equipment are connected together; The high-frequency wireless signal generator is used to send a corresponding first high-frequency test signal to the PEPS controller according to the default high-frequency configuration parameters of the simulated smart key response scenario; it is also used to send a corresponding second high-frequency test signal to the PEPS controller according to the backup frequency. The CCP master device is used to access a specified memory address of the PEPS controller and obtain a first signal parsing result written to the specified memory address, wherein the first signal parsing result is obtained by the PEPS controller after parsing the received first high-frequency test signal; verify the validity of the first signal parsing result, and after successful verification, send a frequency switching command to the PEPS controller, causing the PEPS controller to modify the corresponding high-frequency setting to the backup frequency configuration parameter according to the frequency switching command; switch from the default frequency to the backup frequency; access the specified memory address again, obtain a second signal parsing result written to the specified memory address and verify its validity, wherein the second signal parsing result is obtained by the PEPS controller after parsing the received second high-frequency test signal.

8. A multi-frequency testing device for PEPS production process, characterized in that, Applied to a PEPS controller, the PEPS controller is connected to an offline testing device, and the testing device includes: The first signal receiving unit is used to receive the first high-frequency test signal sent by the offline detection device. The first high-frequency test signal is sent by the offline detection device to the PEPS controller according to the default high-frequency configuration parameters of the simulated smart key response scenario. The first signal parsing unit is used to parse the first high-frequency test signal to obtain a first signal parsing result, and write the first signal parsing result to a specified memory address; The first signal parsing result sending unit is used to send the first signal parsing result to the offline detection device when the offline detection device accesses the specified memory address, so that the offline detection device can verify the validity of the first signal parsing result; The switching instruction acquisition unit is used to acquire the frequency switching instruction sent by the offline detection device after verifying the validity of the first signal parsing result; The parameter modification unit is used to modify the corresponding high-frequency settings to the backup frequency configuration parameters according to the frequency switching instruction. The second signal receiving unit is used to receive the second high-frequency test signal sent by the offline testing device. The second high-frequency test signal is sent by the PEPS controller according to the backup frequency after the offline testing device switches from the default frequency point to the backup frequency point. The second signal parsing unit is used to parse the second high-frequency test signal to obtain a second signal parsing result, and write the second signal parsing result to the specified memory address; The second signal parsing result sending unit is used to send the second signal parsing result to the offline detection device when the offline detection device accesses the specified memory address, so that the offline detection device can verify the validity of the second signal parsing result.

9. A PEPS controller, characterized in that, include: A high-frequency wireless signal receiver and a CCP slave device are connected together; The high-frequency wireless signal receiver is configured to receive a first high-frequency test signal sent by the offline detection device, wherein the first high-frequency test signal is sent by the offline detection device to the PEPS controller according to the default high-frequency configuration parameters of the simulated smart key response scenario; to parse the first high-frequency test signal to obtain a first signal parsing result, and to write the first signal parsing result to a specified memory address of the CCP slave device; and to receive a second high-frequency test signal sent by the offline detection device, wherein the second high-frequency test signal is sent by the PEPS controller according to the backup frequency after the offline detection device switches from the default frequency to the backup frequency. The second high-frequency test signal is parsed to obtain the second signal parsing result, and the second signal parsing result is written to the specified memory address; The CCP slave device is used to send the first signal parsing result to the offline detection device when the offline detection device accesses the specified memory address, so that the offline detection device can verify the validity of the first signal parsing result. The system is configured to receive a frequency switching command sent by the offline detection device after verifying the validity of the first signal parsing result; modify the corresponding high-frequency setting to the backup frequency configuration parameter according to the frequency switching command; and send the second signal parsing result to the offline detection device when the offline detection device accesses the specified memory address, so that the offline detection device can verify the validity of the second signal parsing result.

10. A multi-frequency testing system for PEPS production process, characterized in that, include: The offline testing device according to claim 7, and the PEPS controller according to claim 9; The offline testing equipment and the PEPS controller are connected via a controller local area network bus; The offline testing device is loaded with a test script, which includes test cases for the default frequency point and the backup frequency point. The PEPS controller is configured with a multi-band receiving channel to support the reception of high-frequency signals from multiple frequency bands.

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