Radio frequency signal verification system

Abstract

The present disclosure relates to a radio frequency signal verification system, which automatically triggers a key to emit a radio frequency signal, analyzes and verifies the radio frequency signal, and automatically records the verification result, without human triggering the key, saving manpower and material resources, and the verification result is reliable. The system comprises: a PEPS module, an intelligent key and a client in communication connection with the PEPS module, and a voltage stabilizing power supply providing power supply for the PEPS module; the PEPS module is used to drive the intelligent key to emit a radio frequency signal in response to the control instruction of the client, analyze the radio frequency signal emitted by the intelligent key, and feed back the analysis result to the client; the client is used to verify the analysis result, and display the analysis result and the verification result.

Description

Technical Field

[0001] This disclosure relates to the field of automotive body control technology, and more specifically, to a radio frequency signal verification system. Background Technology

[0002] In existing technologies, the key is mainly triggered manually to send radio frequency signals. The radio frequency signals are then verified by a spectrum analyzer, and the verification results are recorded by testers. The entire verification process is inefficient, the verification results are unreliable due to human interference, and the basic information of the smart key cannot be obtained intuitively. Moreover, the verification process requires a lot of manpower and resources. Summary of the Invention

[0003] The purpose of this disclosure is to provide a radio frequency signal verification system that automatically triggers a key to transmit a radio frequency signal, analyzes and verifies the radio frequency signal, and automatically records the verification results. This eliminates the need for manual key activation, saving manpower and resources, and the verification results are reliable.

[0004] To achieve the above objectives, this disclosure provides a radio frequency signal verification system, the system comprising: a PEPS module, a smart key and a client communicatively connected to the PEPS module, and a regulated power supply for providing power to the PEPS module;

[0005] The PEPS module is used to respond to the control command of the client, drive the smart key to transmit radio frequency signals, analyze the radio frequency signals transmitted by the smart key, and feed back the analysis results to the client;

[0006] The client is used to verify the parsing results and display the parsing results and verification results.

[0007] Optionally, the control command includes a first control command;

[0008] The PEPS module responds to the first control command from the client, drives the smart key to transmit the first radio frequency signal multiple times according to a preset frequency, parses each of the first radio frequency signals to obtain the ID information of the smart key, and feeds back the ID information to the client.

[0009] The client is used to record the number of times the ID information is received, calculate the reception rate based on the number of times it is received, verify the reception rate, and display the verification result and the ID information.

[0010] Optionally, the client records the number of times it sends the first control command to the PEPS module as the control count;

[0011] The client is used to input the number of receptions and the number of control operations into the following calculation formula to obtain the reception rate;

[0012] The calculation formula includes: A / B*100%=C, where A represents the number of receptions, B represents the number of control operations, and C represents the reception rate.

[0013] Optionally, the client determines the missed call rate based on the reception rate, and

[0014] If the missed connection rate is less than or equal to the preset failure rate, the radio frequency signal is determined to be valid.

[0015] The sum of the reception rate and the missed call rate is one.

[0016] Optionally, the system further includes a low-frequency antenna communicatively connected to the PEPS module, and the control commands include a second control command;

[0017] The PEPS module responds to the second control command from the client by driving the low-frequency antenna to trigger the smart key to transmit radio frequency signals, analyzing the radio frequency signals, and feeding back the analysis results to the client.

[0018] The client verifies whether the parsing result includes the location information of the smart key, and displays the parsing result and the verification result.

[0019] Optionally, the PEPS module responds to the second control command from the client, drives the low-frequency antenna to send a low-frequency signal, triggers the smart key to transmit a radio frequency signal, and parses the radio frequency signal;

[0020] Specifically, when the low-frequency antenna is successfully triggered at low frequency, the smart key transmits a radio frequency signal carrying the location information of the smart key; when the low-frequency antenna fails to trigger, the smart key transmits a radio frequency signal without carrying any information.

[0021] Optionally, if the parsing result includes the location information, the client determines that the low-frequency signal is valid;

[0022] If the analysis result includes a zero signal, the low-frequency signal is determined to be invalid.

[0023] Optionally, the PEPS module includes a control unit, a low-frequency drive unit, an RF communication module, a CAN transceiver, and a button control unit, all connected to the control unit. The CAN transceiver communicates with the client via a CAN card, and the button control unit is connected to the smart key.

[0024] Optionally, the control unit is used to receive control commands sent by the client through the CAN transceiver, control the low-frequency drive unit or the button control to drive the radio frequency communication module to transmit radio frequency signals according to the control commands, control the radio frequency communication module to parse the radio frequency signals, and feed back the parsing results to the client through the CAN transceiver.

[0025] Optionally, the client is equipped with a display for displaying the parsing results and verification results.

[0026] Through the above technical solution, the PEPS module in this disclosure responds to the control command sent by the client, drives the smart key to send radio frequency signals, parses the radio frequency signals emitted by the smart key, and feeds back the parsing results to the client. The client verifies the parsing results and displays both the parsing and verification results. There is no need for someone to trigger the smart key; verification of the radio frequency signals can be completed solely through the client and the PEPS module, saving manpower and resources. Furthermore, the verification results are not affected by external interference, improving the reliability of the verification results.

[0027] Other features and advantages of this disclosure will be described in detail in the following detailed description section. Attached Figure Description

[0028] The accompanying drawings are provided to further illustrate the present disclosure and form part of the specification. They are used together with the following detailed description to explain the present disclosure, but do not constitute a limitation thereof. In the drawings:

[0029] Figure 1 This is a structural diagram of a radio frequency signal verification system according to exemplary embodiments of the present disclosure;

[0030] Figure 2 This is another structural diagram of a radio frequency signal verification system according to exemplary embodiments of the present disclosure. Detailed Implementation

[0031] The specific embodiments of this disclosure will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are for illustration and explanation only and are not intended to limit this disclosure.

[0032] It should be noted that all actions involving the acquisition of signals, information, or data in this disclosure are carried out in compliance with the relevant data protection laws and policies of the country where the location is situated, and with authorization from the owner of the relevant device.

[0033] As mentioned in the background section, in existing technologies, verifying the radio frequency (RF) signal emitted by the smart key triggered by the remote control button and searching for the smart key through low frequency (LF) signals require separate testing. The process involves manually controlling the remote control button to trigger the smart key to emit the RF signal, and then verifying the RF signal using a spectrum analyzer. This results in low testing efficiency, and the remote control button is easily damaged. Searching for the smart key through LF signals does not provide a direct view of the smart key's location and ID information. The entire testing process consumes a lot of manpower and resources, and the test results are subject to subjective human influence.

[0034] In view of this, the present disclosure provides a radio frequency signal verification system that automatically triggers a key to transmit a radio frequency signal, analyzes and verifies the radio frequency signal, records and displays the verification results. The entire process requires no human intervention, saving a lot of manpower and resources, and the verification results are reliable.

[0035] Figure 1 This is a structural diagram of a radio frequency signal verification system according to exemplary embodiments of the present disclosure, with reference to... Figure 1 The radio frequency signal verification system includes: a PEPS (Passive Entry Passive Start) module, a smart key and client that communicate with the PEPS module, and a regulated power supply that provides power to the PEPS module.

[0036] The PEPS module is used to respond to the client's control commands, drive the smart key to transmit radio frequency signals, analyze the radio frequency signals transmitted by the smart key, and feed the analysis results back to the client.

[0037] The client is used to verify the parsing results and display both the parsing and verification results.

[0038] Specifically, the control commands include a first control command to verify the validity of the RF signal and a second control command to verify the validity of the LF signal.

[0039] Specifically, the PEPS module responds to the first or second control command, drives the smart key to emit RF signals through the corresponding control command's driving method, parses the RF signals emitted by the smart key, and feeds back the parsing results to the client.

[0040] The PEPS module in this disclosure responds to control commands sent by the client, driving the smart key to transmit radio frequency (RF) signals, thus achieving automatic RF signal transmission without requiring manual activation of the smart key. The PEPS module parses the RF signals transmitted by the smart key and feeds the parsing results back to the client, simultaneously verifying the validity of both the RF and LF signals. The client verifies the parsing results and displays both the parsing and verification results. The entire verification process requires no human intervention, relying solely on the client and the PEPS module, saving significant manpower and resources, reducing verification costs, and ensuring the verification results are unaffected by external interference, thus improving the reliability and accuracy of the verification results.

[0041] To help those skilled in the art better understand the radio frequency signal verification system provided in this disclosure, the components involved in the above-mentioned radio frequency signal verification system are described in detail below.

[0042] In one feasible embodiment, the control instructions include a first control instruction;

[0043] The PEPS module responds to the client's first control command, drives the smart key to transmit the first radio frequency signal multiple times according to the preset frequency, parses each first radio frequency signal to obtain the smart key's ID information, and feeds the ID information back to the client.

[0044] The client is used to record the number of times ID information is received, calculate the reception rate based on the number of receptions, verify the reception rate, and display the verification results and ID information.

[0045] Specifically, the user presets the number of times and time intervals to trigger the button control unit on the smart key according to the verification requirements. The client generates the first control command according to the preset number of times and time intervals, and sends the first control command to the PEPS module for RF signal verification.

[0046] Specifically, the button control unit on the smart key includes a self-locking button and an unlocking button. The PEPS module controls the self-locking button and / or unlocking button on the smart key according to a preset frequency to drive the smart key to transmit RF signals.

[0047] In one feasible embodiment, the client records the number of times it sends the first control command to the PEPS module as the control count;

[0048] The client uses the number of receptions and control attempts to calculate the reception rate using the following formula;

[0049] The calculation formula includes: A / B*100%=C, where A represents the number of receptions, B represents the number of control operations, and C represents the reception rate.

[0050] Specifically, for each first RF signal, the PEPS module parses the first RF signal. If the first RF signal carries the ID signal of the smart key, it obtains the ID information of the smart key corresponding to the first RF signal and feeds back the ID information of the smart key to the client. If the first RF signal does not carry the ID signal of the smart key, it does not feed back any information to the client.

[0051] For example, the client sends the first command to the PEPS module 10,000 times, and the client records the ID signal received 9,998 times. The reception rate is calculated based on the number of control commands and the number of receptions.

[0052] C = 9998 / 10000 * 100% = 99.98%.

[0053] In one feasible embodiment, the client determines the missed call rate based on the reception rate, and

[0054] If the missed call rate is less than or equal to the preset failure rate, the radio frequency signal is deemed valid.

[0055] The sum of the missed call rate and the received call rate is one.

[0056] Specifically, the preset failure rate is preset based on the verification accuracy, and in this disclosure, the preset failure rate is 0.03%.

[0057] For example, if the client sends the first command to the PEPS module 10,000 times and records the ID signal received 9,998 times, the reception rate is 99.98%. Based on the reception rate, the missed call rate is calculated as 1 - 99.98% = 0.02%. When the missed call rate is 0.02%, 0.02% < 0.03%. Therefore, the verification result corresponding to this reception rate is that the RF signal is valid.

[0058] In one feasible embodiment, refer to Figure 2 The system also includes a low-frequency antenna that communicates with the PEPS module, and the control commands include a second control command.

[0059] The PEPS module responds to the client's second control command by driving the low-frequency antenna to trigger the smart key to transmit radio frequency signals, analyzes the radio frequency signals, and feeds back the analysis results to the client.

[0060] The client verifies whether the parsing result includes the location information of the smart key, and displays the parsing result and verification result.

[0061] Specifically, the user presets the low-frequency antennas that need to trigger the smart key and the voltage data of each low-frequency antenna according to the verification requirements. The client generates a second control command based on the preset low-frequency antennas and the voltage data of each low-frequency antenna, and sends the second control command to the PEPS module to perform LF signal verification.

[0062] Specifically, the low-frequency antennas include the IMMO (Immobiliser / Immobilizer, engine immobilizer system) antenna, the left antenna, the rear antenna, and the right antenna.

[0063] Specifically, after the low-frequency antenna transmits the LF signal, the smart key transmits the RF signal based on the LF signal. The low-frequency antenna generates the smart key's ID information and the corresponding RSSI (Received Signal Strength Indicator) data value based on the RF signal. The RSSI data value can be used to calibrate the LF information.

[0064] Specifically, the client can obtain RSSI data values, and display and download them.

[0065] For example, take the RSSI data value during a specific LF signal verification process of a smart key as an example, see the table below.

[0066]

[0067] Specifically, in the table above, KeyPositon represents a critical location, BumpAnt represents an impact, RSSIImmoAnt represents the closest distance to the IMMO antenna, RSSIFRAnt represents the closest distance to the left antenna, RSSIFLAnt represents the closest distance to the right antenna, Ant1Volta represents the signal value received by antenna interface Ant1, Ant3Volta represents the signal value received by antenna interface Ant3, Ant4Volta represents the signal value received by antenna interface Ant4, and Ant5Volta represents the signal value received by antenna interface Ant5.

[0068] For example, the PEPS module responds to the client's second control command to drive the low-frequency antenna to transmit an LF signal. After receiving the LF signal, the smart key transmits an RF signal. The PEPS module parses the RF signal and feeds back the parsing result and RSSI data value to the client. The client verifies whether the parsing result includes the smart key's location information and displays the verification result and RSSI data value.

[0069] In one feasible embodiment, refer to Figure 2 The PEPS module responds to the second control command from the client, drives the low-frequency antenna to send low-frequency signals, triggers the smart key to transmit radio frequency signals, and parses the radio frequency signals.

[0070] Specifically, when the low-frequency antenna is successfully triggered at low frequency, the smart key transmits a radio frequency signal carrying the location information of the smart key; when the low-frequency antenna fails to trigger, the smart key transmits a radio frequency signal without carrying any information.

[0071] Specifically, refer to Figure 2 When two smart keys, smart key 1 and smart key 2, are present, the low-frequency antenna sends an LF signal, which triggers smart key 1 and smart key 2, and smart key 1 and smart key 2 send radio frequency signals respectively.

[0072] For example, refer to Figure 2 The PEPS module responds to the second control command by driving the low-frequency antenna to send an LF signal, thereby triggering smart key 1 and smart key 2 to transmit radio frequency signals at low frequency. When the low-frequency antenna is successfully triggered at low frequency, smart key 1 and smart key 2 transmit radio frequency signals carrying the location information of the smart key. When the low-frequency antenna fails to trigger, they transmit radio frequency signals without any information. The PEPS module parses the radio frequency signals transmitted by smart key 1 and smart key 2 respectively, and obtains the location information or zero information of smart key 1 and smart key 2.

[0073] In one feasible embodiment, the client determines that the low-frequency signal is valid if the parsing result includes location information;

[0074] If the analysis result includes a zero signal, the low-frequency signal is deemed invalid.

[0075] For example, if the parsing result sent by the PEPS module includes the location information of smart key 1 and smart key 2, the LF signal is determined to be valid; if the parsing result includes the zero signal corresponding to smart key 1 and the zero signal corresponding to smart key 2, the LF signal is determined to be invalid.

[0076] In one feasible embodiment, refer to Figure 2 The PEPS module includes a control unit, a low-frequency drive unit, an RF communication module, a CAN transceiver, and a button control unit, all connected to the control unit. The CAN transceiver communicates with the client via a CAN card, and the button control unit is connected to the smart key.

[0077] Specifically, the control unit includes a microcontroller unit (MCU), the radio frequency communication module includes a radio frequency receiver (RFR), and the CAN card includes a CPAN.

[0078] Specifically, the PEPS module communicates with PCAN via a CAN transceiver, and PCAN connects to the client via USB.

[0079] In one feasible embodiment, refer to Figure 2 The control unit is used to receive control commands sent by the client via a CAN transceiver, and according to the control commands, controls the low-frequency drive unit or the button control to drive the RF communication module to transmit RF signals. The control RF communication module is used to parse the RF signals and feed back the parsing results to the client via the CAN transceiver.

[0080] Specifically, in response to the first control command sent by the client, the control unit controls the smart key to transmit the first radio frequency signal multiple times according to a preset frequency, controls the RFR to parse the first radio frequency signal, and controls the CAN transceiver to feed back the parsing result to the client; in response to the second control command sent by the client, the control unit controls the low-frequency drive unit to transmit the LF signal to drive the smart key to transmit the second radio frequency signal, controls the RFR to parse the second radio frequency signal, and controls the CAN transceiver to feed back the parsing result to the client.

[0081] In one feasible embodiment, refer to Figure 2 The client has a monitor that displays the parsing and verification results.

[0082] Specifically, the display on the client shows the location and ID information of smart key 1 and smart key 2, as well as the reception rate of the RF signal of smart key 1.

[0083] In the radio frequency information verification system disclosed herein, the PEPS module responds to control commands sent by the client to control the low-frequency drive unit or button control to drive the smart key to transmit radio frequency signals, achieving automatic RF signal transmission without requiring manual activation of the smart key. The PEPS module parses the RF signal transmitted by the smart key and feeds back the parsing results to the client. The client verifies the parsing results and displays both the parsing and verification results. Verification personnel can directly obtain the smart key's location information, ID information, and receiver rate through the client. The entire verification process requires no human intervention and can simultaneously verify the validity of both RF and LF signals. This is achieved solely through the client and the PEPS module, making the verification process simple and fast, saving significant manpower and resources, reducing verification costs, and ensuring the verification results are unaffected by external interference, thus improving the reliability and accuracy of the verification results.

[0084] The preferred embodiments of this disclosure have been described in detail above with reference to the accompanying drawings. However, this disclosure is not limited to the specific details of the above embodiments. Within the scope of the technical concept of this disclosure, various simple modifications can be made to the technical solutions of this disclosure, and these simple modifications all fall within the protection scope of this disclosure.

[0085] It should also be noted that the various specific technical features described in the above embodiments can be combined in any suitable manner without contradiction. To avoid unnecessary repetition, this disclosure will not describe the various possible combinations separately.

[0086] Furthermore, various different embodiments of this disclosure can be combined in any way, as long as they do not violate the spirit of this disclosure, they should also be regarded as the content disclosed in this disclosure.

Claims

1. A radio frequency signal verification system, characterized in that, The system includes: a PEPS module, a smart key and a client that are communicatively connected to the PEPS module, and a regulated power supply that provides power to the PEPS module. The PEPS module is used to respond to the control command of the client, drive the smart key to transmit radio frequency signals, analyze the radio frequency signals transmitted by the smart key, and feed back the analysis results to the client; The client is used to verify the parsing result and display the parsing result and the verification result; The control command includes a first control command; The PEPS module responds to the first control command from the client, drives the smart key to transmit the first radio frequency signal multiple times according to a preset frequency, parses each of the first radio frequency signals to obtain the ID information of the smart key, and feeds back the ID information to the client. The client is used to record the number of times the ID information is received, calculate the reception rate based on the number of times it is received, verify the reception rate, and display the verification result and the ID information.

2. The radio frequency signal verification system according to claim 1, characterized in that, The client records the number of times it sends the first control command to the PEPS module as the control count; The client is used to input the number of receptions and the number of control operations into the following calculation formula to obtain the reception rate; The calculation formula includes: A / B*100%=C, where A represents the number of receptions, B represents the number of control operations, and C represents the reception rate.

3. The radio frequency signal verification system according to claim 1, characterized in that, The client determines the missed call rate based on the reception rate, and If the missed connection rate is less than or equal to the preset failure rate, the radio frequency signal is determined to be valid. The sum of the reception rate and the missed call rate is one.

4. The radio frequency signal verification system according to claim 1, characterized in that, The system also includes a low-frequency antenna that is communicatively connected to the PEPS module, and the control commands include a second control command. The PEPS module responds to the second control command from the client by driving the low-frequency antenna to trigger the smart key to transmit radio frequency signals, analyzing the radio frequency signals, and feeding back the analysis results to the client. The client verifies whether the parsing result includes the location information of the smart key, and displays the parsing result and the verification result.

5. The radio frequency signal verification system according to claim 4, characterized in that, The PEPS module responds to the second control command from the client, drives the low-frequency antenna to send a low-frequency signal, triggers the smart key to transmit a radio frequency signal, and parses the radio frequency signal; Specifically, when the low-frequency antenna is successfully triggered at low frequency, the smart key transmits a radio frequency signal carrying the location information of the smart key; when the low-frequency antenna fails to trigger, the smart key transmits a radio frequency signal without carrying any information.

6. The radio frequency signal verification system according to claim 5, characterized in that, If the client determines that the low-frequency signal is valid when the parsing result includes the location information; If the analysis result includes a zero signal, the low-frequency signal is determined to be invalid.

7. The radio frequency signal verification system according to claim 1, characterized in that, The PEPS module includes a control unit, a low-frequency drive unit, an RF communication module, a CAN transceiver, and a button control unit, all connected to the control unit. The CAN transceiver communicates with the client via a CAN card, and the button control unit is connected to the smart key.

8. The radio frequency signal verification system according to claim 7, characterized in that, The control unit is used to receive control commands sent by the client through the CAN transceiver, control the low-frequency drive unit or the button control to drive the radio frequency communication module to transmit radio frequency signals according to the control commands, control the radio frequency communication module to parse the radio frequency signals, and feed back the parsing results to the client through the CAN transceiver.

9. The radio frequency signal verification system according to claim 1, characterized in that, The client is equipped with a display, which is used to display the parsing results and verification results.

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