Remote key control method, system and equipment and computer readable storage medium

Abstract

The invention discloses a remote key control method, system and device and a computer readable storage medium, and the method comprises the steps: transmitting a low-frequency activation signal to a vehicle key of a vehicle; receiving a high-frequency key signal sent by the vehicle key; carrying out local verification on the received high-frequency key signal; and if the verification is passed, a vehicle door is controlled to be unlocked or locked through a vehicle body communication bus of the vehicle. According to the invention, a safe and efficient remote key control scheme is realized, the risks of signal interruption and data loss are obviously reduced, and the use experience of the vehicle key is enhanced.

Description

Technical Field

[0001] The present invention relates to the field of vehicle electronic technology, and in particular to a remote key control method, system, device and computer-readable storage medium. Background Art

[0002] In recent years, with the rapid development of Internet of Vehicles technology, artificial intelligence and semiconductor technology, the automotive industry is undergoing an intelligent transformation. The rise of new energy vehicles and the application of smart cockpit technology have promoted the development of automotive electronic systems towards a more intelligent and integrated direction. In this context, as an important interface connecting people and cars, the technological advancement and security of radio frequency keys have become particularly important. However, the existing radio frequency key system still has several limitations, including no battery power monitoring function, low security, complex transmission link and easy frame loss, frequency band interference and insufficient automatic switching capabilities, which directly affect the user experience and system reliability.

[0003] At present, the RF key system mainly relies on BGM (Body Gateway Module) and TBOX (Telematics BOX). When the user presses the unlock or lock button of the RF key, the RF key transmits a RF signal; the TBOX receives the RF signal and transmits it to the BGM; the BGM determines whether to execute the unlock or lock command by parsing the key ID identity and RF radio frequency data. For example, when the TBOX module receives a 4-byte key ID, the system generates a new ID by XORing the first two bytes and the last two bytes, and then repackages the original data into K-line (a serial communication protocol) data that can be recognized by the BGM, and transmits it to the BGM through the K-line bus. The BGM parses the data, verifies the integrity, confirms that the key is the key that matches the vehicle, and then controls the unlocking or locking of the door through the CAN bus network.

[0004] However, the traditional radio frequency key system still has some shortcomings in practical applications, including the following points: First, there is a lack of battery power detection function. The current radio frequency key cannot monitor the battery power status in real time. Users will only notice when the key power is exhausted. Usually, the battery is replaced to check whether the power is insufficient. This passive power monitoring method brings inconvenience to users; second, the security is low. Most of the data of the radio frequency key is transmitted in plain text, which is easy to be intercepted or tampered with, and there is a high security risk, which opens loopholes for potential signal relay attacks or other forms of signal interception; third, the transmission link is complex and prone to frame loss. The transmission module link of the radio frequency signal is long, including multi-layer processing modules such as key, TBOX, BGM, etc. The complex link is prone to signal frame loss, which may cause unlocking or locking failure. In addition, the process of troubleshooting is cumbersome and difficult to locate; fourth, the frequency band interference and automatic switching capabilities are insufficient. When the radio frequency key is working, it is easily interfered by other wireless signals in the environment. However, the existing system cannot actively detect interference and automatically switch frequency bands, which will cause the radio frequency signal transmission to fail or delay, thereby affecting the user experience. Summary of the invention

[0005] In order to overcome the deficiencies in the prior art, the purpose of the present invention is to provide a remote key control method, system, device and computer-readable storage medium to solve the problems of low security, complex transmission link and data frame loss in the current radio frequency key control scheme.

[0006] The present invention proposes a remote key control method, which is applied to a vehicle body domain controller, and the method comprises: sending a low frequency activation signal to a vehicle key of the vehicle; receiving a high frequency key signal sent by the vehicle key; Performing local verification on the received high-frequency key signal; If the verification is passed, the vehicle door is controlled to be unlocked or locked via the vehicle body communication bus.

[0007] Optionally, the method further comprises: receiving a key learning signal sent by a remote communication terminal of the vehicle, wherein the key learning signal is generated when the remote communication terminal detects that an application program in communication connection with the remote communication terminal enters a preset learning mode; When the vehicle key performs a preset learning operation, the filter for receiving the radio frequency data is controlled to receive and learn the key data sent by the vehicle key in an off mode, and the filter is controlled to enter an on mode after the learning is completed.

[0008] Optionally, the method further comprises: Acquiring power data and field strength data sent by the vehicle key; Corresponding remaining power information and key position information are generated according to the power data and the field strength data, and the remaining power information and / or the key position information are sent to the vehicle computer for display, or sent to a mobile device connected to the vehicle for display.

[0009] Optionally, the method further comprises: Receiving a key disabling signal sent by a remote communication terminal of the vehicle, wherein the key disabling signal is generated when the remote communication terminal detects that a key loss instruction is collected by a vehicle computer of the vehicle or a mobile device connected to the vehicle; The key data corresponding to the key disabling signal is disabled and erased.

[0010] Optionally, the method further comprises: receiving a keyless start disabling signal sent by a remote communication terminal of the vehicle, wherein the keyless start disabling signal is generated when the remote communication terminal detects that the driving state of the vehicle meets a preset fatigue driving condition; The current driving status information is sent to the vehicle computer for display, or is sent to a mobile device connected to the vehicle for display, and an effective time of a keyless start disabling signal corresponding to the driving status information is set.

[0011] Optionally, the method further comprises: Receiving a key search signal sent by a remote communication terminal of the vehicle, wherein the key search signal is generated when the remote communication terminal detects that a key search instruction is collected by a vehicle computer of the vehicle or a mobile device connected to the vehicle; Low-frequency data is sent to the vehicle key, or high-frequency data sent by the vehicle key is received, and a positioning mode of the vehicle key is activated according to the low-frequency data and / or the high-frequency data, so that a built-in buzzer of the vehicle key is turned on.

[0012] Optionally, the method further comprises: Determine the current interference level by using the noise floor value of the radio frequency data; When the interference level meets a preset condition, low-frequency data is sent to the vehicle key to control the vehicle key to switch the current frequency band mode.

[0013] The present invention also proposes a remote key control system, which includes a vehicle body domain controller and a vehicle key, wherein: The vehicle key is used to receive a low-frequency activation signal sent by the vehicle body domain controller; The body domain controller is used to receive a high-frequency key signal sent by the vehicle key; The body domain controller is also used to perform local verification on the high-frequency key signal, wherein if the verification passes, the vehicle door is controlled to be unlocked or locked through the vehicle body communication bus.

[0014] The present invention also proposes a remote key control device, which includes a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the computer program implements the steps of the remote key control method as described above when executed by the processor.

[0015] The present invention further proposes a computer-readable storage medium, on which a remote key control program is stored. When the remote key control program is executed by a processor, the steps of the remote key control method as described in any one of the above items are implemented.

[0016] The remote key control method, system, device and computer-readable storage medium of the present invention are implemented by sending a low-frequency activation signal to the vehicle key of the vehicle; receiving a high-frequency key signal sent by the vehicle key; performing local verification on the received high-frequency key signal; and if the verification passes, controlling the door to be unlocked or locked through the vehicle body communication bus of the vehicle. A safe and efficient remote key control solution is realized, which significantly reduces the risk of signal interruption and data loss and enhances the user experience of the vehicle key. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The present invention will be further described below with reference to the accompanying drawings and embodiments, in which: Figure 1 is a first flow chart of the remote key control method of the present invention; Figure 2 is a second flow chart of the remote key control method of the present invention; Figure 3 is a third flow chart of the remote key control method of the present invention; Figure 4 is a fourth flow chart of the remote key control method of the present invention; Figure 5 is a fifth flow chart of the remote key control method of the present invention; Figure 6 is a sixth flow chart of the remote key control method of the present invention; Figure 7 is a seventh flow chart of the remote key control method of the present invention; Figure 8 This is the existing remote key control schematic; Fig. 9 It is a control principle diagram of the remote key control method of the present invention. DETAILED DESCRIPTION

[0018] It should be understood that the specific embodiments described herein are only used to explain the present invention, and are not used to limit the present invention.

[0019] In the subsequent description, the suffixes such as "module", "component" or "unit" used to represent elements are only used to facilitate the description of the present invention, and have no specific meanings. Therefore, "module", "component" or "unit" can be used in a mixed manner.

[0020] Figure 1 This embodiment proposes a remote key control method, which is applied to a vehicle body domain controller, and the method includes: S1. Sending a low frequency activation signal to a vehicle key of the vehicle; S2, receiving a high-frequency key signal sent by the vehicle key; S3, performing local verification on the received high-frequency key signal; S4: If the verification is passed, the vehicle door is controlled to be unlocked or locked via the vehicle body communication bus.

[0021] In this embodiment, an intelligent and secure radio frequency key receiving control scheme is proposed, aiming to improve the security, functionality and system stability of the radio frequency key.

[0022] Please refer to Figure 8, which shows the commonly used system architecture, including RKE (Remote Keyless Entry) radio frequency key, TBOX, BGM and body module. Among them, RKE radio frequency key is used as the signal transmitter to send high-frequency key signals (433mhz band) and receive low-frequency signals (135khz band), while TBOX module only has the ability to receive high-frequency signals (with an integrated 433mhz antenna), and BGM has the ability to send low-frequency signals (135khz), and its main function is to use the low-frequency antenna to activate the key to send high-frequency unlocking and locking signals. Specifically, when the RKE radio frequency key sends high-frequency data (the original high-frequency data includes key ID, lock byte information, and CRC check bit) to TBOX via a 433MHz frequency, the TBOX's built-in 433MHz receiving antenna receives the radio frequency signal and converts it into Manchester code; then, TBOX parses the code into a digital signal, and the repackaged data is sent to the BGM via the vehicle's K-line bus; after receiving the K-line data, the BGM checks the key ID and key check bits to ensure that the K-line data is the key data of the vehicle, and then controls the unlocking or locking of the door through the vehicle body CAN network. The above is the existing RKE radio frequency unlocking process. It can be seen that the above scheme relies on the data interaction between the BGM and TBOX, and there is a significant risk of signal interruption and data loss in this process.

[0023] Please refer to Fig. 9 In order to solve the above problems, this embodiment proposes an improved system architecture. Figure 8 The main difference is that it interacts with BGM directly through the key's transmitter, that is, BGM directly receives the key's high-frequency data (including key ID, battery power, field strength value, background noise, etc.) without TBOX processing. This improvement significantly reduces the risk of signal interruption and data loss. Specifically, BGM is responsible for verifying the key ID and data integrity. If the key data meets the current unlocking or locking requirements, it will control the unlocking or locking of the door through the vehicle body CAN bus. In addition, BGM transmits the key power and field strength value data to TBOX and DHU car computers through the CAN network, so that users can view the key status in real time through the car computer screen or the mobile device's App.

[0024] In this embodiment, based on the above scheme, the implementation process for PE (Passive Entry) and PS (Passive Start) is as follows: When the owner brings the key close to the main driver of the vehicle, he touches the key door handle button. After the body module detects the key, it notifies the BGM through the CAN network. The BGM activates the low-frequency antenna (135hz). At this time, the key will receive the low-frequency data and send out the KV data frame. The KV data frame is used to implement the above PE and PS functions. When TBOX receives the KV data frame, it forwards the data to BGM, and BGM unlocks the door or starts the vehicle after it considers it valid.

[0025] In this embodiment, based on the above scheme, the implementation process of RKE button unlocking is as follows: when the owner is within a preset range (for example, 20 meters) of the car, the radio frequency key button unlocking button is manually triggered. At this time, the radio frequency key sends multiple frames (for example, 6 frames) of high-frequency unlocking frames. At this time, TBOX parses the radio frequency frames and assembles and encrypts them. After the assembly is completed, it is forwarded to BGM through the K-line bus. BGM confirms that it is valid unlocking or locking data, and then performs the corresponding unlocking and locking operations.

[0026] In this embodiment, based on the above scheme, the implementation process of the Approach function (unlocking when approaching, locking when moving away) is as follows: when the owner approaches the vehicle or moves away from the vehicle, the key polls (for example, a period of 500ms) to send an Approach frame (433MHZ) high-frequency signal. At this time, the TBOX receives the Approach data and forwards it to the BGM. The BGM determines whether the key is moving away or approaching by analyzing the field strength value and distance information, and thus executes the corresponding unlocking or locking function.

[0027] Furthermore, in this embodiment, based on the above scheme, when the key fails, the user is guided by the car computer screen or App to place the key in a preset detection area such as a cup holder. When the presence of the key is detected, the backup frequency band will be activated, thereby realizing the above-mentioned function of starting the vehicle in PS keyless start mode.

[0028] It can be seen that in this embodiment, for the interactive stage of the RKE key, the optimized link is key->BGM->TBOX. The original data emitted by the key no longer passes through TBOX, but is directly received by the BGM module. Since the previous transmission link needs to be forwarded through TBOX, the signal may be interrupted or frame lost during the forwarding process. The optimized new link is a bidirectional link. In addition, since CAN signals are used and CAN signal transmission is differential transmission, the stability of transmission is also ensured to a certain extent.

[0029] The beneficial effect of this embodiment is that by sending a low-frequency activation signal to the vehicle key of the vehicle; receiving a high-frequency key signal sent by the vehicle key; and locally verifying the received high-frequency key signal; if the verification passes, controlling the door to be unlocked or locked through the vehicle body communication bus of the vehicle, a safe and efficient remote key control solution is realized, which significantly reduces the risk of signal interruption and data loss and enhances the user experience of the vehicle key.

[0030] Figure 2 is a second flow chart of the remote key control method of the present invention. Based on the above embodiment, the method further includes: S21, receiving a key learning signal sent by a remote communication terminal of the vehicle, wherein the key learning signal is generated when the remote communication terminal detects that an application maintaining a communication connection with the remote communication terminal enters a preset learning mode; S22. When the vehicle key performs a preset learning operation, the filter for receiving the radio frequency data is controlled to receive and learn the key data sent by the vehicle key in an off mode, and the filter is controlled to enter an on mode after the learning is completed.

[0031] In this embodiment, an intelligent learning stage is set for the RKE key. Specifically, when the vehicle is in factory mode or the key is damaged, the traditional key learning method requires the BGM to cooperate with the antenna to write the key ID through a diagnostic method. This learning method requires knowing the key ID and key. Based on the RKE key learning mode of this method, by long pressing the key unlock button (for example, 30s) and clicking the intelligent learning mode button on the App, TBOX notifies the BGM to enter the learning mode through the CAN signal, and the BGM sets its own filter to the off mode. In this mode, the BGM can accept data from any key ID. In the intelligent learning mode, the key will continuously send the key ID and random key, field strength value background noise information, so that the BGM learns the new key. When the BGM completes the learning of the new key, it reopens the acceptance filter and switches to a mode that can only accept the key ID of the vehicle. It can be seen that compared with the current key learning method, this method greatly reduces the difficulty of key learning and the communication load, and simplifies the key learning process, and users can easily complete the operation through the App.

[0032] Figure 3 is a third flow chart of the remote key control method of the present invention. Based on the above embodiment, the method further includes: S31, acquiring power data and field strength data sent by the vehicle key; S32. Generate corresponding remaining power information and key position information according to the power data and the field strength data, and send the remaining power information and / or the key position information to the vehicle computer for display, or send it to a mobile device connected to the vehicle for display.

[0033] In this embodiment, an information display stage is set for the RKE key. Specifically: when the key data completes the transmission of a communication link, the user can view the key power level and current approximate location in real time through the mobile phone App or the screen of the DHU vehicle machine; further, the radio frequency key of the present application automatically sends the key power level and field strength value data after the last user presses the button or is idle for a preset time (for example, 2 hours), and the TBOX and BGM can calculate the actual power level information and approximate location information of the key through this data, thereby ensuring that the user can grasp the status of the key at any time; further, the user will be reminded when the key power is low, and the user can view the relevant information of the key in real time through the mobile phone App and DHU.

[0034] Figure 4 is a fourth flow chart of the remote key control method of the present invention. Based on the above embodiment, the method further includes: S41, receiving a key disabling signal sent by a remote communication terminal of the vehicle, wherein the key disabling signal is generated when the remote communication terminal detects that a key loss instruction is collected by a vehicle computer of the vehicle or a mobile device connected to the vehicle; S42: disabling and erasing key data corresponding to the key disabling signal.

[0035] In this embodiment, a key disabling stage is set for the RKE key. Specifically: when the user realizes that the key is lost, the user can disable the key through the mobile phone App or the screen of the DHU vehicle machine; when the key is disabled, TBOX notifies BGM through a CAN signal that the key is disabled, and BGM no longer parses the lost key ID data, and quickly creates a blacklist and erases the key ID, thereby quickly disabling the lost key to ensure the safety of the vehicle.

[0036] It can be seen that in this embodiment, vehicle safety is significantly improved by real-time monitoring of the key status and rapid disabling of lost keys.

[0037] Figure 5 is a fifth flow chart of the remote key control method of the present invention. Based on the above embodiment, the method further includes: S51, receiving a keyless start disabling signal sent by a remote communication terminal of the vehicle, wherein the keyless start disabling signal is generated when the remote communication terminal detects that the driving state of the vehicle meets a preset fatigue driving condition; S52: Send the current driving status information to the vehicle computer for display, or send it to a mobile device connected to the vehicle for display, and set the effective time of the keyless start disabling signal corresponding to the driving status information.

[0038] In this embodiment, a fatigue driving linkage stage is set for the RKE key. Specifically: when the vehicle is started keylessly and the vehicle's Usage Mode is switched to driving mode, when TBOX detects that the speed signal is greater than a first preset value (for example, 30 km / h), TBOX sends a CAN signal to BGM, and BGM starts a timer. When a continuous first preset time (for example, 8 hours) is detected at a speed higher than the first preset value or another second preset value, BGM forwards the fatigue driving signal through the CAN bus. After TBOX and DHU recognize the fatigue driving signal, the screens of the mobile phone App and the DHU car computer prompt the driver that he is driving fatigued, and after the second preset time (for example, 1 hour), the keyless start mode is disabled to ensure vehicle driving safety.

[0039] Figure 6 is a sixth flow chart of the remote key control method of the present invention. Based on the above embodiment, the method further includes: S61, receiving a key search signal sent by the remote communication terminal of the vehicle, wherein the key search signal is generated when the remote communication terminal detects that the vehicle computer or a mobile device connected to the vehicle collects a key search instruction; S62: sending low-frequency data to the vehicle key, or receiving high-frequency data sent by the vehicle key, and activating the positioning mode of the vehicle key according to the low-frequency data and / or the high-frequency data, so that the built-in buzzer of the vehicle key is turned on.

[0040] In this embodiment, a key search and positioning function is set for the RKE key. Specifically: when the key is lost or cannot be found, a passive buzzer is built into the new key, and the key automatically sends the key power and field strength value data every third preset time (for example, 2 hours). The approximate location of the key can be viewed or activated through the DHU car screen or mobile phone App; when the user activates the key through the DHU car screen or App, the DHU or TBOX notifies the BGM through the CAN signal. Since the BGM has built-in high-frequency and low-frequency antennas, the BGM receives 433mhz high-frequency data and sends 135khz low-frequency data. The key receives 135khz low-frequency signals and sends 413mhz high-frequency data, and the BGM activates the low-frequency antenna to send low-frequency signals, and the key receives low-frequency signals; after any of the above interactions, the key's internal buzzer works, thereby initiating a beeping sound to help users quickly locate.

[0041] Figure 7 is a seventh flow chart of the remote key control method of the present invention. Based on the above embodiment, the method further includes: S71, determining the current interference level according to the noise floor value of the radio frequency data; S72: When the interference degree meets a preset condition, low-frequency data is sent to the vehicle key to control the vehicle key to switch the current frequency band mode.

[0042] In this embodiment, when the unlocking fails, the failure reason is displayed on the DHU screen or App, such as signal interference, low battery, key ID mismatch, etc., to help users quickly understand the problem. Furthermore, after each unlocking failure, the BGM automatically generates an error log to record all the data of the unlocking failure.

[0043] In this embodiment, when radio frequency interference is detected, the background noise value sent by the BGM through the key can determine the degree of interference. The BGM triggers the key to switch the frequency band mode through the low-frequency antenna. When the interference continues to be serious, the BGM will automatically unlock, thereby ensuring the reliability of vehicle unlocking.

[0044] In this embodiment, after the vehicle has been stationary for more than a fourth preset time period (for example, 48 hours), the key enters an anti-eavesdropping mode to limit the signal transmission frequency; further, when the key approaches the vehicle, for example, when the distance to the vehicle is less than or equal to a preset threshold, it resumes normal operation to prevent relay attacks.

[0045] Based on the above embodiment, the present invention further proposes a remote key control system, which includes a vehicle domain controller 10 and a vehicle key 20, wherein: The vehicle key 20 is used to receive the low-frequency activation signal sent by the vehicle body domain controller 10; The vehicle body domain controller 10 is used to receive a high-frequency key signal sent by the vehicle key 20; The body domain controller 10 is also used to perform local verification on the high-frequency key signal, wherein if the verification passes, the vehicle door is controlled to be unlocked or locked through the vehicle body communication bus.

[0046] It should be noted that the above-mentioned system embodiment and method embodiment belong to the same concept, and the specific implementation process is detailed in the method embodiment, and the technical features in the method embodiment are correspondingly applicable in the system embodiment, which will not be repeated here.

[0047] Based on the above embodiments, the present invention also proposes a remote key control device, which includes a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the computer program implements the steps of the remote key control method as described in any one of the above items when executed by the processor.

[0048] It should be noted that the above-mentioned device embodiment and method embodiment belong to the same concept, and the specific implementation process is detailed in the method embodiment, and the technical features in the method embodiment are correspondingly applicable in the device embodiment, which will not be repeated here.

[0049] Based on the above embodiments, the present invention further proposes a computer-readable storage medium, on which a remote key control program is stored. When the remote key control program is executed by a processor, the steps of any of the above remote key control methods are implemented.

[0050] It should be noted that the above-mentioned medium embodiment and method embodiment belong to the same concept, and the specific implementation process is detailed in the method embodiment, and the technical features in the method embodiment are correspondingly applicable in the medium embodiment, which will not be repeated here.

[0051] Through the description of the above implementation methods, those skilled in the art can clearly understand that the above-mentioned embodiment methods can be implemented by means of software plus a necessary general hardware platform, and of course can also be implemented by hardware, but in many cases the former is a better implementation method. Based on such an understanding, the technical solution of the present invention, or the part that contributes to the prior art, can be embodied in the form of a software product, which is stored in a storage medium (such as ROM / RAM, a magnetic disk, or an optical disk), and includes a number of instructions for enabling a terminal (which can be a mobile phone, a computer, a server, an air conditioner, or a network device, etc.) to execute the methods described in each embodiment of the present invention.

[0052] It should be noted that, in this article, the terms "include", "comprises" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, an element defined by the sentence "comprises a ..." does not exclude the existence of other identical elements in the process, method, article or device including the element.

[0053] The embodiments of the present invention are described above in conjunction with the accompanying drawings, but the present invention is not limited to the above-mentioned specific implementation modes, which are merely illustrative rather than restrictive. Under the guidance of the present invention, ordinary technicians in this field can also make many forms without departing from the scope of protection of the present invention and the claims, all of which are within the protection of the present invention.

Claims

1. A remote key control method, applied to a vehicle body domain controller, characterized in that: The method comprises: sending a low frequency activation signal to a vehicle key of the vehicle; receiving a high frequency key signal sent by the vehicle key; Performing local verification on the received high-frequency key signal; If the verification is passed, the vehicle door is controlled to be unlocked or locked via the vehicle body communication bus.

2. The remote key control method according to claim 1, characterized in that: The method further comprises: receiving a key learning signal sent by a remote communication terminal of the vehicle, wherein the key learning signal is generated when the remote communication terminal detects that an application program in communication connection with the remote communication terminal enters a preset learning mode; When the vehicle key performs a preset learning operation, the filter for receiving the radio frequency data is controlled to receive and learn the key data sent by the vehicle key in an off mode, and the filter is controlled to enter an on mode after the learning is completed.

3. The remote key control method according to claim 1, characterized in that: The method further comprises: Acquiring power data and field strength data sent by the vehicle key; Corresponding remaining power information and key position information are generated according to the power data and the field strength data, and the remaining power information and / or the key position information are sent to the vehicle computer for display, or sent to a mobile device connected to the vehicle for display.

4. The remote key control method according to claim 1, characterized in that: The method further comprises: Receiving a key disabling signal sent by a remote communication terminal of the vehicle, wherein the key disabling signal is generated when the remote communication terminal detects that a key loss instruction is collected by a vehicle computer of the vehicle or a mobile device connected to the vehicle; The key data corresponding to the key disable signal is disabled and erased.

5. The remote key control method according to claim 1, characterized in that: The method further comprises: receiving a keyless start disabling signal sent by a remote communication terminal of the vehicle, wherein the keyless start disabling signal is generated when the remote communication terminal detects that the driving state of the vehicle meets a preset fatigue driving condition; The current driving status information is sent to the vehicle computer for display, or is sent to a mobile device connected to the vehicle for display, and an effective time of a keyless start disabling signal corresponding to the driving status information is set.

6. The remote key control method according to claim 1, characterized in that: The method further comprises: Receiving a key search signal sent by a remote communication terminal of the vehicle, wherein the key search signal is generated when the remote communication terminal detects that a key search instruction is collected by a vehicle computer of the vehicle or a mobile device connected to the vehicle; Low-frequency data is sent to the vehicle key, or high-frequency data sent by the vehicle key is received, and a positioning mode of the vehicle key is activated according to the low-frequency data and / or the high-frequency data, so that a built-in buzzer of the vehicle key is turned on.

7. The remote key control method according to claim 1, characterized in that: The method further comprises: Determine the current interference level by using the noise floor value of the radio frequency data; When the interference level meets a preset condition, low-frequency data is sent to the vehicle key to control the vehicle key to switch the current frequency band mode.

8. A remote key control system, characterized in that: The system includes a vehicle body domain controller and a vehicle key, wherein: The vehicle key is used to receive a low-frequency activation signal sent by the vehicle body domain controller; The body domain controller is used to receive a high-frequency key signal sent by the vehicle key; The body domain controller is also used to perform local verification on the high-frequency key signal, wherein if the verification passes, the vehicle door is controlled to be unlocked or locked through the vehicle body communication bus.

9. A remote key control device, characterized in that: The device comprises a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the computer program implements the steps of the remote key control method according to any one of claims 1 to 7 when executed by the processor.

10. A computer-readable storage medium, characterized in that: The computer-readable storage medium stores a remote key control program, and when the remote key control program is executed by the processor, the steps of the remote key control method according to any one of claims 1 to 7 are implemented.

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