A method for reducing power consumption of a car key, a computer device and a storage medium

Abstract

The application relates to a method for reducing power consumption of a car key, a computer device and a storage medium, which comprises the following steps: receiving a first frequency signal and decoding, checking data obtained through decoding, so as to check the legality of the first frequency signal; if the first frequency signal is legal, judging whether the first frequency signal comprises a polling command; if the first frequency signal comprises the polling command, controlling the indicator light not to flash and replying to a second frequency signal. When the car machine polls, the indicator light of the car key is controlled not to flash frequently, and the flashing of the indicator light of the car key does not affect the use of the keyless entry function and the button function, so that the power consumption of the car key is reduced.

Description

Technical Field

[0001] This application relates to the automotive field, and in particular to a method for reducing the power consumption of a car key, a computer device, and a storage medium. Background Technology

[0002] As cars become increasingly intelligent, especially with the widespread adoption of PEPS (Power, Power, and Shared Start) intelligent entry and start systems, vehicles can connect to the car key in real time, sending signals to or receiving signals from the car key to perform operations such as unlocking doors in advance, powering on the vehicle in advance, and opening or closing windows and the trunk.

[0003] Car keys receive various signals, and their indicator lights illuminate frequently in response, causing the battery powering the car key to drain too quickly. For example, when a car key is powered by a commonly used 3V CR2032 lithium manganese button battery, the battery life is typically only about six months. Therefore, the frequent illumination of the car key's indicator light leads to rapid battery depletion. Summary of the Invention

[0004] Based on this, a method, computer device, and storage medium for reducing the power consumption of car keys are provided, thereby improving the problem of excessively rapid power consumption of car keys in the prior art.

[0005] On the one hand, a method for reducing the battery consumption of car keys is provided, including:

[0006] Receive and decode the first frequency signal, and verify the data obtained from the decoding to verify the legality of the first frequency signal;

[0007] If valid, determine whether the first frequency signal includes a polling command. If the first frequency signal includes a polling command, control the indicator light to stop flashing and return the second frequency signal.

[0008] In one embodiment, receiving and decoding a first frequency signal, and verifying the decoded data to check the legitimacy of the first frequency signal, includes:

[0009] The system receives and decodes the first frequency signal to obtain a random number and a physical address carried by the first frequency signal. The random number is obtained by encoding and encrypting the physical address of the vehicle system. The physical address is used to store the network location of the vehicle system.

[0010] The result of decoding the random number is compared with the physical address to obtain the result value;

[0011] If the result value is 1, then the first frequency signal is valid.

[0012] In other embodiments, after verifying the validity of the first frequency signal, the method further includes:

[0013] If it is determined that the first frequency signal includes a keyless entry command, then the indicator light is controlled to flash, and the second frequency signal is returned, so that the vehicle system receives and executes the keyless entry command, wherein the keyless entry command includes a door unlocking command.

[0014] In other embodiments, after verifying the validity of the first frequency signal, the method further includes:

[0015] If it is determined that the first frequency signal includes a button command, then the indicator light is controlled to flash, and the second frequency signal is returned, so that the vehicle system receives and executes the button command.

[0016] On the other hand, a method for reducing the power consumption of a car key is provided, applied to the vehicle's infotainment system, including:

[0017] When the vehicle control module detects that the enable polling condition is met, the vehicle communication module sends a first frequency signal so that the vehicle key can receive, decode and verify the first frequency signal.

[0018] When the vehicle communication module receives the second frequency signal, it determines the location of the car key based on the second frequency signal in order to determine whether to send the first frequency signal.

[0019] In one embodiment, the body control module detects the conditions that enable polling, including:

[0020] The body control module detects whether the doors are closed or whether there is someone in the driver's seat;

[0021] When it is determined that the vehicle door is closed and / or there is no one in the driver's seat, the vehicle communication module sends the first frequency signal.

[0022] In other embodiments, when the vehicle communication module receives the second frequency signal, it determines the location of the car key based on the second frequency signal to determine whether to send the first frequency signal, including:

[0023] When the vehicle communication module receives the second frequency signal, it obtains a first distance based on the signal strength indication value, wherein the first distance is the distance between the vehicle unit and the car key;

[0024] When the first distance is less than the second distance, the vehicle communication module sends the first frequency signal so that the car key receives and responds;

[0025] When the first distance is greater than the third distance, the vehicle communication module stops sending the first frequency signal.

[0026] In another aspect, a computer device is provided, including a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein when the processor executes the computer program, it implements the method steps for reducing the power consumption of a car key.

[0027] In other aspects, a computer-readable storage medium is provided having a computer program stored thereon, which, when executed by a processor, implements the steps of the method for reducing the power consumption of a car key.

[0028] The aforementioned method, computer equipment, and storage medium for reducing car key power consumption involve the car key receiving the first frequency signal sent by the vehicle's onboard communication module. The car key decodes the received first frequency signal, verifies the obtained data, and checks the legality of the first frequency signal. If legal, it determines whether the command type includes a polling command. If so, it controls the car key's indicator light to turn off. This does not affect the flashing of the car key's indicator light when using the keyless entry function or button function, thus reducing power consumption caused by the frequent lighting of the indicator light when the car key polls the vehicle's onboard communication module and extending battery life. Attached Figure Description

[0029] Figure 1 This is a schematic diagram of the overall process of a method for reducing the power consumption of a car key in one embodiment;

[0030] Figure 2 This is a flowchart illustrating the decoding and verification process of a first frequency signal in one embodiment;

[0031] Figure 3 This is a schematic diagram of the process by which the vehicle-mounted system determines whether to send a first frequency signal in one embodiment.

[0032] Figure 4 This is a schematic diagram of the process of detecting enable polling conditions on the vehicle-mounted terminal in one embodiment.

[0033] Figure 5 This is a flowchart illustrating the process by which the vehicle-mounted system determines and sends a first frequency signal in one embodiment. Detailed Implementation

[0034] To make the objectives, technical solutions, and advantages of this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the scope of this application.

[0035] It should be noted that the illustrations provided in this embodiment are only schematic representations of the basic concept of the present invention. Therefore, the drawings only show components relevant to the present invention and are not drawn according to the actual number, shape, and size of components in implementation. In actual implementation, the form, quantity, and proportion of each component can be arbitrarily changed, and the component layout may be more complex. The structures, proportions, sizes, etc., depicted in the accompanying drawings are only for illustrative purposes to aid those skilled in the art and are not intended to limit the implementation conditions of the present invention. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in proportions, or adjustments to size, without affecting the effects and objectives of the present invention, should still fall within the scope of the technical content disclosed in the present invention. Furthermore, the terms such as "upper," "lower," "left," "right," "middle," and "one" used in this specification are only for clarity of description and are not intended to limit the scope of the present invention. Changes or adjustments to their relative relationships, without substantially altering the technical content, should also be considered within the scope of the present invention.

[0036] Currently, the Polling function equipped in vehicles is used to query the car key, obtain the connection status of the car key, and receive the car key's response signal to determine the car key's location so as to perform various functions of the car key such as PEPS (Passive Entry Passive Start) or RKE (Remote Keyless Entry).

[0037] Polling is a method used by the CPU (Central Processing Unit) to decide how to provide services to peripheral devices. The CPU periodically sends queries, sequentially checking with each peripheral device to see if it needs service. If so, service is provided, and after the service is completed, the next peripheral device is queried, and this process is repeated continuously. In the vehicle's infotainment system, the in-vehicle communication module periodically sends polling requests to query the location of the car key and establish a connection with it to enable PEPS, RKE, or other functions.

[0038] However, when the car's infotainment system is charging, the indicator light on the car key flashes frequently, causing unnecessary power consumption. Therefore, this paper proposes a method to reduce the car key's power consumption to minimize unnecessary power drain. Figure 1 As shown, it includes:

[0039] S1, Receive and decode the first frequency signal, and verify the data obtained from the decoding to verify the legality of the first frequency signal;

[0040] When the vehicle's infotainment system activates the Polling function, the car key receives a first frequency signal. The car key has a built-in transponder with a 3D antenna, capable of automatically receiving, transmitting, and processing signals in three dimensions. It can receive the 125kHz low-frequency Polling signal from the vehicle's infotainment system, i.e., the first frequency signal. It decodes and verifies the first frequency signal. If the verification is successful, and the first frequency signal is recognized as including the polling command, the control indicator light stops flashing, and a second frequency signal is transmitted back via the signal transmitter.

[0041] S2, if valid, determine whether the first frequency signal includes a polling command. If the first frequency signal includes a polling command, control the indicator light to stop flashing and return the second frequency signal.

[0042] The second frequency signal can be transmitted via the Ultra High Frequency (UHF) band. UHF refers to radio waves with wavelengths ranging from 1m to 1dm and frequencies from 300 to 3000MHz. UHF is primarily used for short-range communication and can be transmitted and received using small, short antennas, making it suitable for mobile communication. It is commonly used in mobile communication and broadcasting, and can be incorporated into car keys to reduce their size. Preferably, but not limited to, Bluetooth communication can be used. Bluetooth, like Wi-Fi and Zigbee, is a wireless communication technology that allows various devices to establish direct communication connections. Bluetooth uses 2.4GHz radio frequencies for communication, and a Bluetooth device can be used to transmit the second frequency signal on the car key and receive the second frequency signal on the car's infotainment system.

[0043] Preferably, BLE (Bluetooth Low Energy) modules can be used for signal transmission. BLE uses the same frequency band as traditional Bluetooth for radio communication and is characterized by low cost, low power consumption, and interoperability. When the BLE module in the vehicle communication module sends a key query request to locate the Bluetooth key, the Bluetooth key receives the request, establishes a connection with the BLE module in the vehicle communication module, and replies with a second frequency signal.

[0044] In one embodiment, a first frequency signal is received and decoded, and the decoded data is verified to check the legitimacy of the first frequency signal. Figure 2 As shown, it includes:

[0045] S11, Receive and decode the first frequency signal to obtain the random number and physical address carried by the first frequency signal, wherein the random number is obtained by encoding and encrypting the physical address of the vehicle unit, and the physical address is used to store the network location of the vehicle unit;

[0046] The data frame of the first frequency signal contains a preamble and a synchronization code. The preamble receives data and its function is to synchronize the clock of the destination host receiver with the clock of the source host transmitter. In this invention, it synchronizes the first frequency signal received by the car key with the clock of the vehicle's infotainment system. Following this is the frame start delimiter byte "10101011", used to indicate the start of the frame. The preamble is used to isolate each Ethernet frame and also serves as a locator. Because Ethernet is variable-length, a preamble is needed to distinguish each frame. The synchronization code is a codeword with frame synchronization capability. In the digital communication system between the key and the vehicle's infotainment system, the digital signals representing messages are transmitted in frames, that is, a codeword is composed of a certain number of code elements, and several codewords make up a frame. The receiving end must decode according to the start and end positions of each codeword. Therefore, it is necessary to add a synchronization mechanism to the program. Here, a buffer is used, and only data frames that meet the frame start and end symbols in the buffer are processed.

[0047] Optionally, both encryption and decryption of the first frequency signal can be implemented using the AES-256 (Advanced Encryption Standard) symmetric encryption algorithm. Symmetric encryption makes the encryption and decryption processes identical, requiring less computational power and significantly increasing decryption speed compared to asymmetric encryption methods. The first step in the AES-256 encryption process is to replace information using a substitution table; the second transformation changes the data rows; the third transformation changes the columns; and the final transformation is a basic mutual exclusion process performed on each column using different parts of the encryption key. The longer the encryption key, the more rounds are required; both AES-256 encryption and decryption require 14 rounds to ensure password security.

[0048] The decoded first frequency signal includes a wake-up ID (Identity Document), used for identification when the vehicle infotainment system connects to the vehicle communication module; a random number Challenge, obtained by encoding and encrypting the vehicle infotainment system's physical address; a random number calculation value Mac, used to store the vehicle infotainment system's physical address; and commands CMD, including PEPS commands and Polling commands, such as "0101" for PEPS commands and "0110" for Polling commands.

[0049] S12, compare the decoding result of the random number with the physical address to obtain the result value;

[0050] The random number Chaining is decoded using the AES-256 decryption method to obtain a string of binary data frames. The result value Result is obtained by comparing the frame with the vehicle's physical address MAC by the identification unit.

[0051] For example, data errors may occur during transmission. To ensure the correctness of data transmission, methods are employed to determine data integrity, promptly detect and correct errors, and perform verification and comparison of two or more sets of data. Commonly used data verification methods include parity check, CRC check, LRC check, Gray code check, SUM check, and XOR check. The authentication unit can verify the first frequency signal using these methods, including but not limited to one of them, and represent the verification result using "1" or "0".

[0052] S13, if the result value is 1, then the first frequency signal is valid.

[0053] If the Receive value is 1, the first frequency signal received by the vehicle communication module is valid, and the vehicle communication module continues to determine whether the first frequency signal includes a polling signal; if the comparison result Receive value is not 1, the received first frequency signal is invalid, the car key discards the first frequency signal, and remains in the waiting state.

[0054] In one embodiment, after verifying the validity of the first frequency signal, the method further includes:

[0055] If it is determined that the first frequency signal includes a keyless entry command, then the indicator light is controlled to flash, and the second frequency signal is returned, so that the vehicle system receives and executes the keyless entry command, wherein the keyless entry command includes a door unlocking command.

[0056] When the vehicle's PEPS (Passive Entry Power Savings System) function is activated, the indicator light on the car key will flash continuously as it establishes a connection with the vehicle's infotainment system. The system can be configured to unlock all four doors when the car key is 2 meters away from the infotainment system. As the distance between the car key and the infotainment system decreases, when the owner touches the door handle to open the door, the limit switches in the door detect the door opening and send a signal to the vehicle communication module via the controller area network. The vehicle communication module then sends a signal to the car key to stop the indicator light from flashing, and the car key receives the signal and turns off the indicator light.

[0057] When the vehicle's infotainment system detects that the distance between the car key and the system is gradually increasing and exceeds 6 meters, the vehicle communication module transmits a door locking command to the door controller. The door controller then executes the door locking command. Optionally, when the vehicle's PEPS system is equipped with an automatic window closing function, the vehicle's windows will automatically rise and lock when the distance between the infotainment system and the car key exceeds 6 meters, and the vehicle's anti-theft function will be activated. At this time, the indicator light on the car key will flash.

[0058] In other embodiments, after verifying the validity of the first frequency signal, the method further includes:

[0059] If it is determined that the first frequency signal includes a button command, then the indicator light is controlled to flash, and the second frequency signal is returned, so that the vehicle system receives and executes the button command.

[0060] If the first frequency signal is determined to include a button command, the car key indicator light flashes, and the car key button command signal can be sent to the vehicle's infotainment system via Bluetooth, thus executing the RKE remote access control system. In addition to controlling the opening and closing of the doors, the vehicle's RKE can also control the opening or closing of the windows and trunk. The vehicle communication module receives the button command signal and sends signals for opening or closing the doors, windows, or trunk to the body control module via the controller area network. The body controller then executes the button command.

[0061] On the other hand, a method for reducing the power consumption of car keys is provided, applied to the vehicle's infotainment system, based on... Figure 3 As shown, it includes:

[0062] S31, when the vehicle control module detects that the enable polling condition is met, the vehicle communication module sends a first frequency signal so that the vehicle key can receive, decode and verify the first frequency signal;

[0063] S32, when the vehicle communication module receives the second frequency signal, it determines the position of the car key based on the second frequency signal in order to determine whether to send the first frequency signal.

[0064] In one embodiment, the body control module detects the conditions for enabling polling, based on... Figure 4 As shown, it includes:

[0065] S311, the body control module detects whether the doors are closed or whether there is someone in the driver's seat;

[0066] S312, when it is determined that the vehicle door is closed and / or there is no one in the driver's seat, the vehicle communication module sends the first frequency signal.

[0067] To identify whether a car door is closed, a door sensor can be used to detect its open and closed status. For example, the door sensor can be positioned near the door latch and can be a limit switch, a common low-current control device. It uses the collision of mechanical moving parts to actuate contacts, thus connecting or disconnecting the control circuit to achieve a specific control purpose. Alternatively, a contact can be installed on both the door and the vehicle body. By checking whether the contacts are electrically connected, the open or closed state of the door can be clearly determined. This door open / closed information is then directly transmitted to the vehicle's controller area network (LAN) communication system, allowing the onboard communication module to receive the door closed signal.

[0068] Seat sensors, such as weight sensors or electronic cameras, can be installed on the seat controller to identify whether the seats in the cabin are occupied. Four weight sensors can be installed, but not limited to, placed under the driver's seat, front passenger seat, and rear seats respectively. When someone sits in a seat, the weight sensors detect pressure, and the magnitude of the pressure can be used to determine whether the seat is occupied.

[0069] Electronic cameras can also be used to identify whether there is someone in the seat. Preferably, an infrared sensor camera can be installed on the vehicle's central control platform, which can identify whether there is someone in the seat based on the temperature of the heat radiation from the seat position, regardless of day or night.

[0070] When the vehicle door is detected to be closed and no one is in the vehicle's seats, the vehicle communication module activates Polling and sends a first frequency signal to periodically query the status of the car key in order to connect with the car key.

[0071] In one embodiment, when the vehicle communication module receives the second frequency signal, it determines the location of the car key based on the second frequency signal to determine whether to send the first frequency signal. Figure 5 As shown, it includes:

[0072] S321, When the vehicle communication module receives the second frequency signal, it obtains a first distance based on the signal strength indication value, wherein the first distance is the distance between the vehicle unit and the car key;

[0073] To determine at what distance the car key's indicator light flashes or stops flashing from the vehicle's infotainment system, the distance between the system and the key needs to be obtained. This distance can be determined by the signal strength indicator (RSSI) of the high-frequency signal emitted by the key. The RSSI value indicates the strength of the received signal. The unit for RSSI is dBm, where dBm (Decibel-milliliters) represents the relative relationship between a certain power and 1 mW. The mathematical expression for the RSSI value x (dBm) and the power P (mW) is as follows:

[0074] x = 10 * lg(P(mW) / 1(mW))

[0075] In this invention, the RSS I received by the vehicle communication module is negative because wireless signals are mostly in the mW range, so they are polarized and converted to dBm. This does not mean the signal is negative. 1mW is 0dBm, and values ​​less than 1mW are negative dBm values. The mathematical expression for the first distance is:

[0076]

[0077] Where ^ is the exponentiation operator, d is the first distance and is expressed as 10 to the power of ((RSSI-A) / (m*n)), RSSI is the signal strength indication value obtained according to the reply of the key query request, A is the signal strength indication value of the reply of the key query request received at a distance L from the vehicle terminal, L is a positive number, n is the environmental attenuation factor, and m is a positive number.

[0078] For example, L is 1m, and the measured signal strength indication value A at 1m is -59dBm. Since m is an integer, m can be set to 10 and substituted into the mathematical expression of the first distance d to calculate the first distance d between the current node key and the vehicle communication module.

[0079] S322, when the first distance is less than the second distance, the vehicle communication module sends the first frequency signal so that the car key receives and responds;

[0080] When the distance between the vehicle's infotainment system and the car key is less than a preset second distance (for example, the second distance can be set to 6m), when it is determined that the distance between the car key and the vehicle's infotainment system is decreasing and the system is approaching the vehicle, and when the first distance is less than 6m, the car key wakes up the vehicle, the vehicle communication module continues to send the first frequency signal, and the indicator light on the car key flashes.

[0081] S323, when the first distance is greater than the third distance, the vehicle communication module stops sending the first frequency signal.

[0082] When the vehicle communication module detects that the distance between the car key and the vehicle's infotainment system is greater than or equal to the third distance (for example, the third distance can be set to 8m), since it is determined that the car owner is far away from the vehicle, the car key no longer receives the first frequency signal, the indicator light on the car key no longer flashes, and it no longer replies with the high-frequency signal. The vehicle's infotainment system also no longer needs to send the first frequency signal. Therefore, the vehicle communication module stops sending the first frequency signal.

[0083] In one embodiment, a computer device is provided, including a memory, a processor, and a computer program stored in the memory and executable on the processor. When the processor executes the computer program, it implements the following steps of the method for reducing the power consumption of a car key:

[0084] S1, Receive and decode the first frequency signal, and verify the data obtained from the decoding to verify the legality of the first frequency signal;

[0085] S2, if valid, determine whether the first frequency signal includes a polling command. If the first frequency signal includes a polling command, control the indicator light to stop flashing and return the second frequency signal.

[0086] In one embodiment, when the computer device executes the computer program, it further performs the following steps:

[0087] S11, Receive and decode the first frequency signal to obtain the random number and physical address carried by the first frequency signal, wherein the random number is obtained by encoding and encrypting the physical address of the vehicle unit, and the physical address is used to store the network location of the vehicle unit;

[0088] S12, compare the decoding result of the random number with the physical address to obtain the result value;

[0089] S13, if the result value is 1, then the first frequency signal is valid.

[0090] In one embodiment, when the computer device executes the computer program, it further performs the following steps:

[0091] S31, when the vehicle control module detects that the enable polling condition is met, the vehicle communication module sends a first frequency signal so that the vehicle key can receive, decode and verify the first frequency signal;

[0092] S32, when the vehicle communication module receives the second frequency signal, it determines the position of the car key based on the second frequency signal in order to determine whether to send the first frequency signal.

[0093] In one embodiment, when the computer device executes the computer program, it further performs the following steps:

[0094] S311, the body control module detects whether the doors are closed or whether there is someone in the driver's seat;

[0095] S312, when it is determined that the vehicle door is closed and / or there is no one in the driver's seat, the vehicle communication module sends the first frequency signal.

[0096] In one embodiment, when the computer device executes the computer program, it further performs the following steps:

[0097] S321, When the vehicle communication module receives the second frequency signal, it obtains a first distance based on the signal strength indication value, wherein the first distance is the distance between the vehicle unit and the car key;

[0098] S322, when the first distance is less than the second distance, the vehicle communication module sends the first frequency signal so that the car key receives and responds;

[0099] S323, when the first distance is greater than the third distance, the vehicle communication module stops sending the first frequency signal.

[0100] In one embodiment, a computer-readable storage medium is provided having a computer program stored thereon, which, when executed by a processor, implements the steps of the method for reducing the power consumption of a car key.

[0101] S1, Receive and decode the first frequency signal, and verify the data obtained from the decoding to verify the legality of the first frequency signal;

[0102] S2, if valid, determine whether the first frequency signal includes a polling command. If the first frequency signal includes a polling command, control the indicator light to stop flashing and return the second frequency signal.

[0103] In one embodiment, when the computer program is executed by a processor, the following steps are also performed:

[0104] S11, Receive and decode the first frequency signal to obtain the random number and physical address carried by the first frequency signal, wherein the random number is obtained by encoding and encrypting the physical address of the vehicle unit, and the physical address is used to store the network location of the vehicle unit;

[0105] S12, compare the decoding result of the random number with the physical address to obtain the result value;

[0106] S13, if the result value is 1, then the first frequency signal is valid.

[0107] In one embodiment, when the computer program is executed by a processor, the following steps are also performed:

[0108] S31, when the vehicle control module detects that the enable polling condition is met, the vehicle communication module sends a first frequency signal so that the vehicle key can receive, decode and verify the first frequency signal;

[0109] S32, when the vehicle communication module receives the second frequency signal, it determines the position of the car key based on the second frequency signal in order to determine whether to send the first frequency signal.

[0110] In one embodiment, when the computer program is executed by a processor, the following steps are also performed:

[0111] S311, the body control module detects whether the doors are closed or whether there is someone in the driver's seat;

[0112] S312, when it is determined that the vehicle door is closed and / or there is no one in the driver's seat, the vehicle communication module sends the first frequency signal.

[0113] In one embodiment, when the computer program is executed by a processor, the following steps are also performed:

[0114] S321, When the vehicle communication module receives the second frequency signal, it obtains a first distance based on the signal strength indication value, wherein the first distance is the distance between the vehicle unit and the car key;

[0115] S322, when the first distance is less than the second distance, the vehicle communication module sends the first frequency signal so that the car key receives and responds;

[0116] S323, when the first distance is greater than the third distance, the vehicle communication module stops sending the first frequency signal.

[0117] It should be understood that, although Figure 1-5 The steps in the flowchart are shown sequentially as indicated by the arrows, but these steps are not necessarily executed in the order indicated by the arrows. Unless otherwise specified herein, there is no strict order in which these steps are executed, and they can be performed in other orders. Figure 1-5At least some of the steps in the process may include multiple sub-steps or multiple stages. These sub-steps or stages are not necessarily completed at the same time, but can be executed at different times. The execution order of these sub-steps or stages is not necessarily sequential, but can be executed in turn or alternately with other steps or at least some of the sub-steps or stages of other steps.

[0118] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0119] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the invention patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this patent application should be determined by the appended claims.

Claims

1. A method for reducing the power consumption of a car key, characterized in that, Applied to car keys, the method includes: Receive and decode the first frequency signal, and verify the data obtained from the decoding to verify the legality of the first frequency signal; If valid, determine whether the first frequency signal includes a polling command. If the first frequency signal includes a polling command, control the indicator light to stop flashing and return the second frequency signal.

2. The method for reducing car key power consumption according to claim 1, characterized in that, Receive and decode a first frequency signal, and verify the decoded data to check the legitimacy of the first frequency signal, including: The system receives and decodes the first frequency signal to obtain a random number and a physical address carried by the first frequency signal. The random number is obtained by encoding and encrypting the physical address of the vehicle system. The physical address is used to store the network location of the vehicle system. The result of decoding the random number is compared with the physical address to obtain the result value; If the result value is 1, then the first frequency signal is valid.

3. The method for reducing car key power consumption according to claim 1, characterized in that, After verifying the validity of the first frequency signal, the process further includes: If it is determined that the first frequency signal includes a keyless entry command, then the indicator light is controlled to flash, and the second frequency signal is returned, so that the vehicle system receives and executes the keyless entry command, wherein the keyless entry command includes a door unlocking command.

4. The method for reducing car key power consumption according to claim 1, characterized in that, After verifying the validity of the first frequency signal, the process further includes: If it is determined that the first frequency signal includes a button command, then the indicator light is controlled to flash, and the second frequency signal is returned, so that the vehicle system receives and executes the button command.

5. A method for reducing the power consumption of a car key, characterized in that, Applications in vehicle infotainment systems include: When the vehicle control module detects that the condition for enabling polling is met, the vehicle communication module sends a first frequency signal so that the car key can receive, decode, and verify the first frequency signal; when the first frequency signal includes a polling command, the car key controls the indicator light of the car key to not flash. When the vehicle communication module receives the second frequency signal sent by the car key, it determines the position of the car key based on the second frequency signal to determine whether to send the first frequency signal.

6. The method for reducing car key power consumption according to claim 5, characterized in that, The conditions for enabling polling by the body control module include: The body control module detects whether the doors are closed or whether there is someone in the driver's seat; When it is determined that the vehicle door is closed and / or there is no one in the driver's seat, the vehicle communication module sends the first frequency signal.

7. The method for reducing car key power consumption according to claim 5, characterized in that, When the vehicle communication module receives the second frequency signal, it determines the location of the car key based on the second frequency signal to determine whether to send the first frequency signal, including: When the vehicle communication module receives the second frequency signal, it obtains a first distance based on the signal strength indication value, wherein the first distance is the distance between the vehicle unit and the car key; When the first distance is less than the second distance, the vehicle communication module sends the first frequency signal so that the car key receives and responds; When the first distance is greater than the third distance, the vehicle communication module stops sending the first frequency signal.

8. A computer device, comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, characterized in that, When the processor executes the computer program, it implements the method steps for reducing the power consumption of the car key as described in any one of claims 1-7.

9. A computer-readable storage medium having a computer program stored thereon, characterized in that, When the computer program is executed by the processor, it implements the method steps for reducing the power consumption of the car key as described in any one of claims 1-7.

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