Method and device for controlling low-frequency antenna of vehicle, vehicle and storage medium

Abstract

The invention provides a method and device for controlling a low-frequency antenna of a vehicle, the vehicle and a storage medium, the method is applied to the field of vehicle control, and the method comprises the following steps: obtaining a first cumulative number of times of controlling a vehicle door lock state through a first key and a second cumulative number of times corresponding to controlling the vehicle door lock state through a second key within a preset duration; determining whether the low-frequency antenna of the vehicle meets a preset control condition or not according to the first cumulative number of times and the second cumulative number of times; under the condition that the low-frequency antenna meets a preset control condition, according to the target increasing proportion and the initial transmitting period duration, determining a target transmitting period duration; and controlling the low-frequency antenna to work with the target emission period duration. According to the method, the emission period duration of the low-frequency antenna can be increased according to the use frequency of the remote control key and the digital key, namely, the emission frequency of the low-frequency antenna for emitting the low-frequency signals is reduced, so that the low-frequency antenna does not need to frequently emit the low-frequency signals, and the purpose of saving vehicle power consumption and electric quantity is achieved.

Description

Technical Field

[0001] The present application relates to the field of vehicle control, and more specifically, to a method, device, vehicle, and storage medium for controlling a low-frequency antenna in the field of vehicle control. Background Art

[0002] Currently, with the development of vehicle intelligence, vehicle keys have evolved from the initial traditional mechanical keys to intelligent keys (i.e., remote control keys), and then gradually to the current virtual keys (i.e., digital keys).

[0003] Compared with remote control keys, digital keys usually do not require the low-frequency antenna in the vehicle to frequently transmit low-frequency signals when unlocking and locking the vehicle. Based on this, when a user carries a digital key to unlock and lock the vehicle, if the low-frequency antenna of the vehicle still frequently transmits low-frequency signals at the previous transmission frequency, it may cause unnecessary power consumption.

[0004] Based on the above problems, how to reasonably control the operation of the low-frequency antenna to reduce vehicle power consumption and battery power has become an urgent problem to be solved. Summary of the Invention

[0005] The present application provides a method, device, vehicle, and storage medium for controlling a low-frequency antenna of a vehicle. The method can appropriately increase the transmission cycle duration of the low-frequency antenna transmitting low-frequency signals according to the usage frequencies of the remote control key and the digital key, that is, reduce the frequency or number of times of the low-frequency antenna transmitting low-frequency signals, so that the low-frequency antenna does not need to frequently transmit low-frequency signals, thereby achieving the purpose of saving vehicle power consumption and battery power.

[0006] In a first aspect, a method for controlling a low-frequency antenna of a vehicle is provided. The method includes: obtaining a first cumulative number of times of controlling the vehicle door lock state by a first key and a second cumulative number of times of controlling the door lock state corresponding to the second key within a preset duration before the current moment; the door lock state is used to indicate whether the vehicle door can be opened; determining whether the low-frequency antenna of the vehicle meets a preset control condition according to the first cumulative number of times and the second cumulative number of times; the low-frequency antenna is used to transmit a low-frequency signal, and the low-frequency signal is used to enable communication between the vehicle and the first key or between the vehicle and the second key; when the low-frequency antenna meets the preset control condition, determining an increased target transmission cycle duration according to a target increase ratio corresponding to the transmission cycle duration of the low-frequency antenna transmitting the low-frequency signal and an initial transmission cycle duration of the low-frequency antenna; controlling the low-frequency antenna to operate with the target transmission cycle duration.

[0007] In the above technical solution, the present application proposes a method for controlling a vehicle's low-frequency antenna. Specifically, during the implementation of this method, the vehicle obtains the first cumulative number of times that the user unlocks and locks the vehicle using the first key within the historical driving duration, and the second cumulative number of times that the user unlocks and locks the vehicle using the second key. The first key is a remote control key, and the second key is a digital key. Further, when the vehicle determines that the low-frequency antenna meets the preset control condition based on the first cumulative number of times and the second cumulative number of times, it increases the transmission cycle duration of the low-frequency antenna. The preset control condition is the condition for reducing the transmission frequency of the low-frequency antenna or increasing the transmission cycle duration of the low-frequency antenna. The above increase in the transmission cycle duration of the low-frequency antenna means that the working duration of the low-frequency antenna per unit time decreases, that is, the transmission frequency of the low-frequency antenna decreases, and the number of times of transmitting low-frequency signals decreases. Thus, the solution of the present application can flexibly reduce the transmission frequency of the low-frequency antenna in combination with the difference in key types when the vehicle is unlocked and locked, achieving the effect of energy conservation and consumption reduction.

[0008] In combination with the first aspect, in some possible implementation manners, determining whether the low-frequency antenna of the vehicle meets the preset control condition according to the first cumulative number of times and the second cumulative number of times includes: taking the difference between the first cumulative number of times and the second cumulative number of times to obtain a cumulative number difference; determining a first ratio of the cumulative number difference to the second cumulative number of times; determining whether the low-frequency antenna meets the preset control condition according to the cumulative number difference or the first ratio; or, summing the first cumulative number of times and the second cumulative number of times to obtain a cumulative number sum; determining a second ratio of the first cumulative number of times to the cumulative number sum; and determining whether the low-frequency antenna meets the preset control condition according to the second ratio.

[0009] In combination with the first aspect and the above implementation manners, in some possible implementation manners, determining whether the low-frequency antenna meets the preset control condition according to the cumulative number difference or the first ratio includes: when the cumulative number difference is greater than a preset number of times, determining that the low-frequency antenna does not meet the preset control condition; when the cumulative number difference is less than or equal to the preset number of times, determining that the low-frequency antenna meets the preset control condition; or, when the first ratio is greater than a first preset ratio, determining that the low-frequency antenna does not meet the preset control condition; when the first ratio is less than or equal to the first preset ratio, determining that the low-frequency antenna meets the preset control condition.

[0010] In the above technical solution, when the cumulative number difference is greater than the preset number, or the first ratio is greater than the first preset ratio, it indicates that the user uses the remote control key frequently. In this case, the vehicle determines not to reduce the transmission frequency of the low-frequency antenna. Therefore, when the remote control key is used frequently, the low-frequency antenna frequently transmits low-frequency signals, and the presence of the remote control key can be detected in time, improving the efficiency and success rate of vehicle unlocking and locking. On the contrary, when the cumulative number difference is less than or equal to the preset number, or the first ratio is less than or equal to the first preset ratio, it indicates that the user does not use the remote control key very often. In this case, since the demand for low-frequency signals is not frequent during the digital key unlocking process. Therefore, the vehicle can appropriately reduce the transmission frequency of the low-frequency antenna to reduce unnecessary power consumption and battery consumption.

[0011] Combined with the first aspect and the above implementation manners, in some possible implementation manners, determining whether the low-frequency antenna meets the preset control condition according to the second ratio includes: when the second ratio is greater than the second preset ratio, determining that the low-frequency antenna does not meet the preset control condition; when the second ratio is less than or equal to the second preset ratio, determining that the low-frequency antenna meets the preset control condition.

[0012] In the above technical solution, when the second ratio is relatively high, it indicates that the user uses the remote control key frequently. In this case, the vehicle determines not to reduce the transmission frequency of the low-frequency antenna, which can ensure that the vehicle can detect the presence of the remote control key in time, improving the efficiency and success rate of vehicle unlocking and locking. On the contrary, when the second ratio is less than or equal to the second preset ratio, it indicates that the user does not use the remote control key very often, and the vehicle can appropriately reduce the transmission frequency of the low-frequency antenna to reduce unnecessary power consumption and battery consumption.

[0013] Combined with the first aspect and the above implementation manners, in some possible implementation manners, the determining step of the target increase ratio includes: subtracting the second cumulative number from the first cumulative number to obtain a cumulative number difference; determining a first ratio of the cumulative number difference to the second cumulative number; adding the first cumulative number and the second cumulative number to obtain a cumulative number sum value; determining a second ratio of the first cumulative number to the cumulative number sum value; determining the target increase ratio according to the cumulative number difference, the first ratio or the second ratio.

[0014] Combined with the first aspect and the above implementation manners, in some possible implementation manners, determining the target increase ratio according to the cumulative number difference, the first ratio or the second ratio includes: determining the difference interval corresponding to the cumulative number difference, and determining the target increase ratio as the increase ratio corresponding to the difference interval; or, determining the first ratio interval corresponding to the first ratio, and determining the target increase ratio as the increase ratio corresponding to the first ratio interval; or, determining the second ratio interval corresponding to the second ratio, and determining the target increase ratio as the increase ratio corresponding to the second ratio interval.

[0015] In the above technical solution, when determining the target increase ratio of the low-frequency antenna transmission cycle duration, according to different determined parameters, multiple different parameter intervals are set in the present application. Different increase ratios correspond to different parameter intervals. The vehicle can obtain the increase ratio by determining the parameter interval where the parameter is located. Setting different increase ratios for different parameter intervals as described above can achieve stepped adjustment of the low-frequency antenna transmission frequency or transmission cycle duration, and avoid the problem of inaccurate adjustment caused by a single increase ratio.

[0016] Combined with the first aspect and the above implementation manners, in some possible implementation manners, the method further includes: when the low-frequency antenna does not meet the preset control condition, determining whether the initial transmission cycle duration is equal to the preset transmission cycle duration; when the initial transmission cycle duration is not equal to the preset transmission cycle duration, controlling the low-frequency antenna to work with the preset transmission cycle duration.

[0017] In the above technical solution, when the low-frequency antenna does not meet the preset control condition, it indicates that the usage frequency of the remote control key is very high, that is, the vehicle needs to frequently drive the low-frequency antenna to transmit low-frequency signals. In this case, the vehicle can compare the initial transmission cycle duration before this adjustment with the preset transmission cycle duration. When the initial transmission cycle duration is not equal to the preset transmission cycle duration, it means that the initial transmission cycle duration is greater than the preset transmission cycle duration, that is, the initial transmission frequency is less than the preset transmission frequency. If the low-frequency antenna is still controlled to work at a lower initial transmission frequency, when the usage frequency of the remote control key is very high, the vehicle may not be able to detect the remote control key in time, resulting in a decline in user experience. Therefore, when the low-frequency antenna does not meet the preset control condition, the vehicle needs to re-control the vehicle to work with the preset transmission cycle duration (or, preset transmission frequency) to ensure timely detection of the remote control key, thereby improving the success rate of vehicle unlocking and locking.

[0018] Second aspect, there is provided a device for controlling a low-frequency antenna of a vehicle. The device includes: a parameter acquisition module, configured to acquire a first cumulative number of times of controlling the door lock state of the vehicle by a first key and a second cumulative number of times of controlling the corresponding door lock state by a second key within a preset time period before the current moment; the door lock state is used to indicate whether the vehicle door can be opened; a condition judgment module, configured to determine whether the low-frequency antenna of the vehicle meets a preset control condition according to the first cumulative number of times and the second cumulative number of times; the low-frequency antenna is used to transmit a low-frequency signal, and the low-frequency signal is used to enable communication between the vehicle and the first key or between the vehicle and the second key; a period determination module, configured to determine an increased target transmission period length according to a target increase ratio corresponding to the transmission period length of the low-frequency signal transmitted by the low-frequency antenna and the initial transmission period length of the low-frequency antenna when the low-frequency antenna meets the preset control condition; an antenna control module, configured to control the low-frequency antenna to operate with the target transmission period length.

[0019] In combination with the second aspect, in some possible implementation manners, the condition judgment module is specifically configured to: calculate the difference between the first cumulative number of times and the second cumulative number of times to obtain a cumulative number difference; determine a first ratio of the cumulative number difference to the second cumulative number of times; determine whether the low-frequency antenna meets the preset control condition according to the cumulative number difference or the first ratio; or, calculate the sum of the first cumulative number of times and the second cumulative number of times to obtain a cumulative number sum; determine a second ratio of the first cumulative number of times to the cumulative number sum; determine whether the low-frequency antenna meets the preset control condition according to the second ratio.

[0020] In combination with the second aspect and the above implementation manners, in some possible implementation manners, the condition judgment module is further configured to: determine that the low-frequency antenna does not meet the preset control condition when the cumulative number difference is greater than a preset number of times; determine that the low-frequency antenna meets the preset control condition when the cumulative number difference is less than or equal to the preset number of times; or, determine that the low-frequency antenna does not meet the preset control condition when the first ratio is greater than a first preset ratio; determine that the low-frequency antenna meets the preset control condition when the first ratio is less than or equal to the first preset ratio.

[0021] In combination with the second aspect and the above implementation manners, in some possible implementation manners, the condition judgment module is further configured to: determine that the low-frequency antenna does not meet the preset control condition when the second ratio is greater than a second preset ratio; determine that the low-frequency antenna meets the preset control condition when the second ratio is less than or equal to the second preset ratio.

[0022] Combined with the second aspect and the above implementation manners, in some possible implementation manners, the period determination module is further configured to: subtract the second cumulative count from the first cumulative count to obtain a cumulative count difference; determine a first ratio of the cumulative count difference to the second cumulative count; sum the first cumulative count and the second cumulative count to obtain a cumulative count sum; determine a second ratio of the first cumulative count to the cumulative count sum; and determine the target increase ratio according to the cumulative count difference, the first ratio, or the second ratio.

[0023] Combined with the second aspect and the above implementation manners, in some possible implementation manners, the period determination module is specifically configured to: determine a difference interval corresponding to the cumulative count difference, and determine the target increase ratio as the increase ratio corresponding to the difference interval; or, determine a first ratio interval corresponding to the first ratio, and determine the target increase ratio as the increase ratio corresponding to the first ratio interval; or, determine a second ratio interval corresponding to the second ratio, and determine the target increase ratio as the increase ratio corresponding to the second ratio interval.

[0024] Combined with the second aspect and the above implementation manners, in some possible implementation manners, the apparatus further includes: a processing module, configured to determine whether the initial transmission period duration is equal to a preset transmission period duration when the low-frequency antenna does not meet the preset control condition; and control the low-frequency antenna to operate with the preset transmission period duration when the initial transmission period duration is not equal to the preset transmission period duration.

[0025] In a third aspect, a vehicle is provided, including a memory and a processor. The memory is used to store executable program code, and the processor is used to call and run the executable program code from the memory, so that the vehicle executes the method in the first aspect or any one of the possible implementation manners of the first aspect.

[0026] In a fourth aspect, a computer program product is provided, including: computer program code, which when running on a computer, causes the computer to execute the method in the first aspect or any one of the possible implementation manners of the first aspect.

[0027] In a fifth aspect, a computer-readable storage medium is provided, storing computer program code, which when running on a computer, causes the computer to execute the method in the first aspect or any one of the possible implementation manners of the first aspect. Description of the Drawings

[0028] Figure 1 is a schematic structural diagram of a system for controlling a low-frequency antenna of a vehicle provided by an embodiment of the present application;

[0029] Figure 2 It is a schematic flowchart of a method for controlling a vehicle's low-frequency antenna provided by an embodiment of the present application;

[0030] Figure 3 It is a schematic flowchart of another method for controlling a vehicle's low-frequency antenna provided by an embodiment of the present application;

[0031] Figure 4 It is a schematic structural diagram of a device for controlling a vehicle's low-frequency antenna provided by an embodiment of the present application;

[0032] Figure 5 It is a schematic structural diagram of a vehicle provided by an embodiment of the present application. Detailed implementation manners

[0033] Next, the technical solutions in the present application will be clearly and elaborately described in conjunction with the accompanying drawings. Among them, in the description of the embodiments of the present application, unless otherwise specified, " / " means "or". For example, A / B can mean A or B: "and / or" in the text is merely a description of the association relationship of the associated objects, indicating that there can be three relationships. For example, A and / or B can mean: A exists alone, A and B exist simultaneously, and B exists alone. In addition, in the description of the embodiments of the present application, "a plurality of" means two or more than two.

[0034] Hereinafter, the terms "first" and "second" are only used for descriptive purposes and cannot be construed as implying or suggesting relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features.

[0035] Before introducing the method of the embodiments of the present application, first, the professional terms that may be involved in the embodiments of the present application will be explained.

[0036] An intelligent key, also known as a remote control key, is a physical key with wireless communication functions (such as radio frequency (RF)) for remotely controlling functions such as locking, unlocking, and starting of a vehicle.

[0037] A digital key is a virtual key based on digital technology, without an actual form, and exists in the form of software in various intelligent devices (such as smartphones, wearable devices, and intelligent tablets).

[0038] Optionally, the communication methods between the digital key and the vehicle include Bluetooth Low Energy (BLE), Ultra Wideband (UWB), and Near Field Communication (NFC). Correspondingly, the digital key includes a BLE key, a UWB key, and an NFC key.

[0039] The Keyless Entry System (KES) refers to a technology that allows users to unlock and enter the vehicle without inserting or operating a traditional mechanical key, but by carrying a smart key or a digital key.

[0040] From the perspective of the entry method, the implementation methods of the keyless entry system include Passive Entry and Active Entry. Among them, Passive Entry emphasizes that the vehicle can be unlocked and locked without the user's active operation. Active Entry requires the user to actively operate, that is, the user actively presses the unlock button or the lock button on the smart key or digital key to complete the unlocking and locking of the vehicle.

[0041] First, the application scenarios of the embodiments of the present application will be introduced below.

[0042] Currently, with the development of vehicle intelligence, vehicle keys have evolved from the initial traditional mechanical keys to smart keys (i.e., remote control keys), and then gradually to the current virtual keys (i.e., digital keys).

[0043] Based on the currently common remote control keys or digital keys, no matter which type of vehicle key it is, when controlling the unlocking and locking of the vehicle, it can be divided into active unlocking and locking and passive unlocking and locking according to whether the user needs to manually operate.

[0044] The specific processes of the two types of keys when realizing active unlocking and locking of the vehicle and passive unlocking and locking of the vehicle will be introduced separately below.

[0045] (1) The vehicle key is a remote control key

[0046] In one scenario, when the user enables the active unlocking and locking function of the vehicle (the method of enabling this function is not limited), the user can directly press the unlock button on the remote control key to trigger the remote control key to send a high-frequency unlock signal to the vehicle, thereby controlling the vehicle to unlock. Similarly, the user can also directly press the lock button on the remote control key to trigger the remote control key to send a high-frequency lock signal to the vehicle.

[0047] In another scenario, when the user enables the passive unlocking and locking function of the vehicle (the method of enabling this function is not limited), the vehicle will automatically drive the low-frequency antenna to transmit low-frequency signals at a certain period to determine whether the remote control key can be detected. When the remote control key is detected, the remote control key is awakened, and then further authenticate the identity and transmit instructions with the vehicle through high-frequency signals. When unlocking and locking the vehicle passively as described above, to ensure timely response to the user's approach, the vehicle will frequently drive the low-frequency antenna to send low-frequency signals to facilitate timely detection of the remote control key approaching the vehicle.

[0048] (2) The vehicle key is a digital key

[0049] When the vehicle key is a digital key, regardless of the communication signal corresponding to which communication method (for example, Bluetooth signal), it is a high-frequency signal. Currently, when a digital key communicates with a vehicle, since the smart device corresponding to the digital key is already in an always-on state and can continuously receive signals from the vehicle. For example, when the digital key is a Bluetooth key, the smartphone can always be in a listening mode, waiting for a connection request sent by the vehicle. Therefore, regardless of whether the unlocking and locking method of the digital key is active or passive, the digital key does not need to be awakened by a low-frequency signal and can directly communicate with the vehicle through a high-frequency signal.

[0050] Specifically, under certain specific conditions, the digital key can also be awakened by a low-frequency signal first. For example, in some low-power design strategies (such as sleep mode or power-saving mode), the smart device corresponding to the digital key may enter a deep sleep mode to save its own power. In this state, relying solely on high-frequency signals is not sufficient to effectively awaken the smart device. Therefore, the low-frequency signal can be used as an alternative wake-up mechanism to wake up the digital key. However, in this scenario, the digital key only needs to be awakened by a low-frequency signal under specific conditions, and unlike the remote control key, the vehicle does not need to frequently transmit low-frequency signals through the low-frequency antenna.

[0051] It can be seen that when the user unlocks or locks the vehicle with a digital key, it is not necessary for the low-frequency antenna to frequently transmit low-frequency signals. If the vehicle still continuously transmits low-frequency signals in the way of detecting the remote control key, it will increase the power consumption of the vehicle, thus bringing unnecessary power consumption.

[0052] Based on the above problems, the embodiment of the present application proposes a method for controlling a vehicle low-frequency antenna. This method can appropriately increase the transmission cycle duration of the low-frequency antenna according to the usage frequency of the remote control key and the digital key, that is, reduce the frequency or number of times the low-frequency antenna transmits low-frequency signals, so that the low-frequency antenna does not need to frequently transmit low-frequency signals, achieving the purpose of saving the vehicle power consumption and power.

[0053] Before introducing the method of the embodiments of the present application, the system structure and working principle relied on in the implementation process of the method of the embodiments of the present application will be introduced first.

[0054] Figure 1 It is a schematic structural diagram of a system for controlling a vehicle low-frequency antenna provided by an embodiment of the present application.

[0055] Exemplarily, as Figure 1 shown, according to the different functions of each module, the system 100 for controlling a vehicle low-frequency antenna includes: an electronic control unit 101, a low-frequency communication module 102, a high-frequency communication module 103, a remote control key 104, and a digital key 105.

[0056] Among them, the electronic control unit 101 is specifically any one of the electronic control units (Electronic Control Unit, ECU) in the vehicle, and the embodiments of the present application do not limit this.

[0057] Optionally, the low-frequency communication module 102 includes a low-frequency transmission drive chip and an in-vehicle low-frequency antenna. The high-frequency communication module 103 includes a high-frequency transmission drive chip and an in-vehicle high-frequency antenna. The electronic control unit 101 can drive the in-vehicle low-frequency antenna to transmit low-frequency signals through the low-frequency transmission drive chip, and drive the in-vehicle high-frequency antenna to transmit high-frequency signals through the high-frequency transmission drive chip.

[0058] When the vehicle key is the remote control key 104, if the unlocking and locking method of the vehicle is active, the user can directly press the unlock button on the remote control key 104 to trigger the remote control key 104 to send a high-frequency unlock signal to the vehicle. The high-frequency communication module 103 receives the high-frequency unlock signal and sends it to the electronic control unit 101, and the electronic control unit 101 controls the vehicle to unlock. Similarly, the user can also directly press the lock button on the remote control key 104 to trigger the remote control key 104 to send a high-frequency lock signal to the vehicle. The high-frequency communication module 103 receives the high-frequency lock signal and sends it to the electronic control unit 101, and the electronic control unit 101 controls the vehicle to lock.

[0059] If the unlocking and locking method of the vehicle is passive, the electronic control unit 101 will automatically drive the in-vehicle low-frequency antenna to transmit low-frequency signals at a certain period to determine whether the remote control key 104 can be detected. When the remote control key 104 is detected, the remote control key 104 is awakened, and then further performs identity verification and instruction transmission with the vehicle through high-frequency signals (i.e., the high-frequency communication module 103).

[0060] When the vehicle key is the digital key 105, regardless of the communication signal corresponding to which communication method, generally, the electronic control unit 101 communicates with the digital key 105 through the high-frequency communication module 103. The reason is that the intelligent device corresponding to the digital key 105 is already in the always-on state and can continuously receive signals from the electronic control unit 105. For example, when the digital key 105 is a Bluetooth key, the smart phone can always be in the listening mode, waiting for the connection request sent by the electronic control unit 101. Therefore, regardless of whether the digital key 105 unlocks / locks the vehicle in an active or passive manner, the digital key 105 does not need to be woken up by a low-frequency signal and can directly communicate with the vehicle through a high-frequency signal. In this case, that is to say, there is no longer a need to communicate between the digital key 105 and the electronic control unit 101 through the low-frequency communication module 102.

[0061] Specifically, in some low-power design strategies (such as the sleep mode or power-saving mode), the intelligent device corresponding to the digital key 105 may enter the deep sleep mode to save its own power. In this state, relying solely on the high-frequency signal is not sufficient to effectively wake up the device. Therefore, the low-frequency signal can be used as a backup wake-up mechanism to wake up the digital key 105. Specifically, if the electronic control unit 101 determines that the current state of the vehicle or the environment meets the conditions for low-frequency wake-up, it can drive the vehicle-mounted low-frequency antenna to emit a low-frequency signal through the low-frequency transmission driving chip to search for the digital key 105. When it is determined that the digital key 105 is detected, the intelligent device switches from the low-power state to the normal power state, allowing the digital key 105 to communicate with the electronic control unit 101 through the high-frequency communication module 103.

[0062] After introducing each module involved in the embodiments of the present application, the following details a method for controlling a vehicle low-frequency antenna provided by the embodiments of the present application.

[0063] Figure 2 is a schematic flowchart of a method for controlling a vehicle low-frequency antenna provided by the embodiments of the present application. It should be understood that this method can be applied to Figure 1 system 100, and is specifically applied to any one of the electronic control units 101 of the vehicle in system 100.

[0064] Exemplarily, as Figure 2 shown, this method 200 includes the following steps 201-step 204:

[0065] 201. Obtain the first cumulative number of times of controlling the vehicle door lock state by the first key and the second cumulative number of times of controlling the door lock state by the second key within a preset time period before the current moment; the door lock state is used to indicate whether the vehicle door can be opened.

[0066] It should be understood that, as can be seen from the foregoing, when the user unlocks or locks the vehicle with a digital key, compared with a remote control key, there is no need for the ECU to frequently drive the LF antenna to transmit LF signals. Therefore, a method for controlling the LF antenna of a vehicle provided in an embodiment of the present application specifically analyzes the usage frequencies of the remote control key and the digital key by counting the number of times the user unlocks or locks the vehicle with the remote control key and the number of times the user unlocks or locks the vehicle with the digital key. When the usage frequency of the digital key by the user increases, the transmission frequency of the LF antenna for transmitting LF signals is reduced. Here, the transmission frequency refers to the number of cycles of transmitting LF signals per unit time when the LF antenna transmits LF signals. The transmission frequency is different from the operating frequency of the LF antenna, and the operating frequency refers to the frequency used for effective signal transmission and reception when the LF antenna operates normally.

[0067] In the case where the transmission frequency and the transmission cycle duration are reciprocal to each other, reducing the transmission frequency of the transmitted LF signal is equivalent to increasing the transmission cycle duration of the LF antenna, making the time interval between two adjacent LF signals transmitted by the LF antenna longer, thereby avoiding unnecessary power consumption caused by the LF antenna frequently transmitting LF signals.

[0068] For example, assume the same time of 100 s. The original transmission cycle duration before adjustment is 10 s, and the LF antenna can transmit LF signals 10 times within 100 s; if the target transmission cycle duration after increase is 20 s, the LF antenna can only transmit LF signals 5 times within 100 s.

[0069] Based on this, in the process of implementing the method of the embodiment of the present application, in order to analyze the user's habit of unlocking or locking the vehicle with the key, the ECU can take the current moment as the end moment and obtain the first cumulative number of times the ECU controls the door lock state of the vehicle with the first key and the second cumulative number of times the ECU controls the door lock state of the vehicle with the second key within a preset duration before the current moment.

[0070] Here, the door lock state is used to indicate whether the vehicle door can be opened. Optionally, the door lock state includes unlocked or locked. For example, when the door lock state is locked, the door changes from the state where it can be opened to the state of being closed and locked. When the door lock state is unlocked, the door lock mechanism is activated, and the door changes from the state of being closed and locked to the state where it can be opened.

[0071] The first key is specifically a remote control key; the second key is specifically a digital key. Optionally, the digital key can be any one of a Bluetooth key, a UWB key, or an NFC key, and the embodiment of the present application does not limit this.

[0072] Exemplarily, for the first cumulative count and the second cumulative count, each time the vehicle door lock state changes, the ECU can count whether the current vehicle door lock state change is triggered by the remote key or the digital key. Thus, the ECU can take the current moment as the end moment and obtain, within a historical period of a preset duration during the historical vehicle unlocking and locking process, the first cumulative count of the number of times the vehicle is unlocked and locked in response to the unlocking and locking signals of the remote key by the ECU, and the second cumulative count of the number of times the vehicle is unlocked and locked in response to the unlocking and locking signals of the digital key by the ECU.

[0073] Regarding how the ECU differentiates which key triggers the change in the vehicle door lock state, in one possible way, for some vehicles, different prompting methods are specifically set for different types of keys when the vehicle is unlocked and locked. For example, when the vehicle is unlocked and locked by the remote key, the in-vehicle display screen can display a text pop-up window of "The remote key has been successfully unlocked", and / or the speaker plays the voice of "The remote key has been successfully unlocked". When the vehicle is unlocked and locked by the digital key, the in-vehicle display screen can display a text pop-up window of "The digital key has been successfully unlocked", and / or the speaker plays the voice of "The digital key has been successfully unlocked". Based on this, the ECU can determine whether the current vehicle unlocking is triggered by the remote key or the digital key based on the corresponding text pop-up window or voice when the vehicle is unlocked.

[0074] In another possible way, the high-frequency signal frequency corresponding to the remote key when sending the unlocking and locking signal to the ECU is different from the high-frequency signal frequency corresponding to the digital key when sending the unlocking and locking signal to the ECU. For example, the frequency of the high-frequency signal sent by the remote control signal may be 433 MHz, and the frequency of the high-frequency signal sent by the digital key may be 2.4 GHz (for example, the frequency of the Bluetooth signal). The ECU can determine whether the current unlocking signal is triggered by the remote key or the digital key according to the frequency corresponding to the high-frequency unlocking signal.

[0075] Optionally, the preset duration can be 3 months.

[0076] Exemplarily, assume that within the past 3 months, the total number of times the ECU receives the remote key to unlock and lock the vehicle is 180 times, and the total number of times the ECU receives the digital key to unlock and lock the vehicle is 200 times. Then the first cumulative count is 180, and the second cumulative count is 200.

[0077] Thus, through the above process, the ECU can obtain the first cumulative count corresponding to the remote key and the second cumulative count corresponding to the digital key.

[0078] It should be noted that, in the above introduction process, when the user carries the remote control key and unlocks / locks the vehicle in a passive manner, it involves a low-frequency communication process. When the user carries the remote control key and unlocks / locks the vehicle in an active manner, it does not involve a low-frequency communication process. That is to say, when the user actively unlocks / locks the vehicle with the remote control key, the ECU does not need to frequently drive the low-frequency antenna to transmit low-frequency signals either.

[0079] Therefore, in the embodiments of the present application, the first cumulative number can refer to the cumulative number of times the remote control key unlocks / locks the vehicle, regardless of whether it is an active or passive unlocking / locking method; or it can specifically refer to the cumulative number of times the remote control key unlocks / locks the vehicle and the unlocking / locking method is passive. The embodiments of the present application do not make a limitation on this.

[0080] 202. Determine whether the low-frequency antenna of the vehicle meets a preset control condition according to the first cumulative number and the second cumulative number; the low-frequency antenna is used to transmit low-frequency signals, and the low-frequency signals are used for the vehicle to communicate with the first key or the vehicle to communicate with the second key.

[0081] After obtaining the first cumulative number and the second cumulative number, the ECU can determine whether the low-frequency antenna meets the preset control condition according to the first cumulative number and the second cumulative number. The preset control condition refers to the condition for increasing the emission cycle duration of the low-frequency antenna or the condition for reducing the emission frequency of the low-frequency antenna.

[0082] Specifically, the ECU can compare the first cumulative number and the second cumulative number to determine whether the user prefers to carry the digital key to unlock / lock the vehicle or prefers to carry the remote control key to unlock / lock the vehicle.

[0083] The following are several ways provided by the embodiments of the present application to determine whether the low-frequency antenna meets the preset control condition.

[0084] In a possible implementation manner, determining whether the low-frequency antenna of the vehicle meets the preset control condition according to the first cumulative number and the second cumulative number includes:

[0085] Take the difference between the first cumulative number and the second cumulative number to obtain a cumulative number difference; determine a first ratio of the cumulative number difference to the second cumulative number; determine whether the low-frequency antenna meets the preset control condition according to the cumulative number difference or the first ratio; or,

[0086] Sum the first cumulative number and the second cumulative number to obtain a cumulative number sum; determine a second ratio of the first cumulative number to the cumulative number sum; determine whether the low-frequency antenna meets the preset control condition according to the second ratio.

[0087] In the first method, after obtaining the first cumulative count corresponding to the remote control key and the second cumulative count corresponding to the digital key, the ECU can calculate the difference in cumulative counts between the first cumulative count and the second cumulative count. Then, based on the difference in cumulative counts, the ECU can compare the frequency of unlocking and locking the vehicle through the remote control key with the frequency through the digital key to determine whether the low-frequency antenna meets the preset control conditions. Alternatively, based on the obtained difference in cumulative counts, the ECU can also combine the second cumulative count to determine the first ratio of the difference in cumulative counts to the second cumulative count, and based on the first ratio, determine how much higher the difference in cumulative counts is than the number of times of unlocking and locking with the digital key, so as to determine whether the low-frequency antenna meets the preset control conditions.

[0088] In the second method, the ECU can also obtain the sum of the first cumulative count and the second cumulative count based on the first cumulative count and the second cumulative count, calculate the ratio of the first cumulative count to the sum value to obtain the second ratio (i.e., the unlocking and locking frequency corresponding to the remote control key), and determine whether the low-frequency antenna meets the preset control conditions according to the second ratio.

[0089] The following separately introduces the process of the ECU determining whether the low-frequency antenna meets the preset control conditions in the above several different methods.

[0090] In a possible implementation, determining whether the low-frequency antenna meets the preset control conditions according to the difference in cumulative counts or the first ratio includes:

[0091] When the difference in cumulative counts is greater than the preset count, it is determined that the low-frequency antenna does not meet the preset control conditions; when the difference in cumulative counts is less than or equal to the preset count, it is determined that the low-frequency antenna meets the preset control conditions; or,

[0092] When the first ratio is greater than the first preset ratio, it is determined that the low-frequency antenna does not meet the preset control conditions;

[0093] When the first ratio is less than or equal to the first preset ratio, it is determined that the low-frequency antenna meets the preset control conditions.

[0094] The above process is the process of the ECU determining whether the low-frequency antenna meets the preset control conditions in the first method. The difference in cumulative counts here is the difference obtained by subtracting the second cumulative count from the first cumulative count. According to the magnitudes of the first cumulative count and the second cumulative count, the difference in cumulative counts can be either a positive integer or a negative integer.

[0095] Optionally, the preset count can be 100 times.

[0096] Specifically, when the cumulative count difference exceeds 100 times, it indicates that the cumulative count difference is a positive integer and the first cumulative count is much higher than the second cumulative count. In this case, it means that the user uses the remote control key much more frequently than the digital key. When the user uses the remote control key frequently, in order to detect the presence of the remote control key in a timely manner, the ECU needs to frequently drive the low-frequency antenna to emit low-frequency signals and cannot reduce the emission frequency of the low-frequency antenna (i.e., extend the emission cycle duration). Therefore, the ECU determines that the low-frequency antenna does not meet the preset control conditions.

[0097] When the cumulative count difference does not exceed 100 times, there may be two cases. The first case is that the cumulative count difference is a positive integer and the difference between the first cumulative count and the second cumulative count is not significant, indicating that the user does not use the remote control key particularly frequently. The second case is that the cumulative count difference is a negative integer, that is, the second cumulative count is greater than the first cumulative count, indicating that the user uses the digital key more frequently than the remote control key. In either case, it means that the user does not use the remote control key frequently. When the frequency of using the remote control key is not high, in order to save the power consumption and battery power of the vehicle, the ECU can appropriately reduce the emission frequency of the low-frequency antenna, that is, increase the emission cycle duration of the low-frequency antenna. Therefore, in this case, the ECU determines that the low-frequency antenna meets the preset control conditions.

[0098] Exemplarily, assume that the first cumulative count is 240 times and the second cumulative count is 100 times. The cumulative count difference of 140 times between the two is greater than 100 times, indicating that the user uses the remote control key frequently. Therefore, the ECU determines that the low-frequency antenna does not meet the preset control conditions.

[0099] Another exemplarily, assume that the first cumulative count is 150 times and the second cumulative count is 190 times. The cumulative count difference of -40 times between the two is less than 100 times, and the cumulative count difference is a negative integer, indicating that the user uses the digital key more frequently than the remote control key. Therefore, the ECU determines that the low-frequency antenna meets the preset control conditions.

[0100] In combination with the second cumulative count, the ECU can also calculate the first ratio of the cumulative count difference to the second cumulative count and compare it with the first preset ratio. Optionally, the first preset ratio is 95%.

[0101] Since the cumulative count difference can be a positive integer or a negative integer. Correspondingly, the first ratio can be a positive integer or a negative integer.

[0102] When the first ratio exceeds 95%, it indicates that the cumulative count difference is a positive integer and it means that the user uses the remote control key much more frequently than the digital key. Therefore, the ECU determines that the low-frequency antenna does not meet the preset control conditions.

[0103] When the first ratio is less than or equal to 95%, there may be two cases. The first case is that the difference in cumulative counts is a positive integer and the difference between the first cumulative count and the second cumulative count is not significant, indicating that the user does not use the remote control key very frequently. The second case is that the difference in cumulative counts is a negative integer, that is, the second cumulative count is greater than the first cumulative count, indicating that the user uses the digital key more frequently than the remote control key. In either case, it shows that the user does not use the remote control key very frequently. When the frequency of using the remote control key is not high, in order to save the power consumption and battery power of the vehicle, the ECU can appropriately reduce the transmission frequency of the low-frequency antenna, that is, increase the transmission cycle duration of the low-frequency antenna. Therefore, in this case, the ECU determines that the low-frequency antenna meets the preset control conditions.

[0104] Exemplarily, assume that the first cumulative count is 240 times and the second cumulative count is 100 times. The first ratio between the difference in cumulative counts of 140 times and the second cumulative count of 100 times is 140%, which is greater than 95%. This means that the user uses the remote control key very frequently. Therefore, the ECU determines that the low-frequency antenna does not meet the preset control conditions.

[0105] Another exemplarily, assume that the first cumulative count is 100 times and the second cumulative count is 170 times. The first ratio between the difference in cumulative counts of -70 times and the second cumulative count of 170 times is -41%, which is less than 95%. This shows that the user uses the digital key more frequently. In this case, the low-frequency antenna does not need to transmit low-frequency signals frequently. Therefore, the ECU can appropriately increase the transmission cycle duration of the low-frequency antenna to reduce the transmission frequency of the low-frequency antenna, that is, the ECU determines that the low-frequency antenna meets the preset control conditions.

[0106] In the above technical solution, when the difference in cumulative counts is greater than the preset count, or the first ratio is greater than the first preset ratio, it indicates that the user uses the remote control key more frequently. In this case, the vehicle determines not to reduce the transmission frequency of the low-frequency antenna. Thus, when the frequency of using the remote control key is high, the low-frequency antenna transmits low-frequency signals frequently, which can detect the presence of the remote control key in time and improve the efficiency and success rate of vehicle unlocking and locking. On the contrary, when the difference in cumulative counts is less than or equal to the preset count, or the first ratio is less than or equal to the first preset ratio, it indicates that the user does not use the remote control key very frequently. In this case, since the demand for low-frequency signals is not frequent during the digital key unlocking process. Therefore, the vehicle can appropriately reduce the transmission frequency of the low-frequency antenna correspondingly to reduce unnecessary power consumption and battery consumption.

[0107] The following introduces the process of determining whether the low-frequency antenna meets the preset control conditions according to the second ratio.

[0108] In a possible implementation manner, determining whether the low-frequency antenna meets the preset control conditions according to the second ratio includes:

[0109] When the second ratio is greater than the second preset ratio, it is determined that the low-frequency antenna does not meet the preset control condition;

[0110] When the second ratio is less than or equal to the second preset ratio, it is determined that the low-frequency antenna meets the preset control condition.

[0111] Specifically, after obtaining the first cumulative count and the second cumulative count, the ECU calculates the ratio of the first cumulative count to the total cumulative count to obtain the second ratio. The second ratio can reflect the frequency of the user using the remote control key. The ECU can compare the second ratio with the second preset ratio.

[0112] Optionally, the second preset ratio is 90%.

[0113] When the second ratio is greater than 90%, it indicates that the user uses the remote control key very frequently. As described above, when the user uses the remote control key frequently, in order to ensure that the ECU can detect the presence of the remote control key in time, the ECU needs to ensure that the low-frequency antenna frequently emits low-frequency signals. Therefore, the ECU determines that the low-frequency antenna does not meet the preset control condition.

[0114] When the second ratio is less than or equal to 90%, it indicates that the user does not use the remote control key particularly frequently. To reduce the power consumption of the vehicle. In this case, the ECU can appropriately reduce the transmission frequency of the low-frequency antenna. Therefore, the ECU determines that the low-frequency antenna meets the preset control condition.

[0115] Exemplarily, assume that the first cumulative count is 280 times and the second cumulative count is 20 times. The sum of the two cumulative counts is 300 times. Among them, the second ratio of the first cumulative count to the sum of the cumulative counts is 93.3%, which is greater than 90%. This means that the user uses the remote control key very frequently. Therefore, the ECU determines that the low-frequency antenna does not meet the preset control condition.

[0116] In the above technical solution, when the second ratio is relatively high, it indicates that the user uses the remote control key more frequently. In this case, the vehicle determines not to reduce the transmission frequency of the low-frequency antenna, which can ensure that the vehicle can detect the presence of the remote control key in time and improve the efficiency and success rate of vehicle unlocking and locking. On the contrary, when the second ratio is less than or equal to the second preset ratio, it indicates that the user does not use the remote control key very frequently, and the vehicle can appropriately reduce the transmission frequency of the low-frequency antenna accordingly to reduce unnecessary power consumption and power consumption.

[0117] Thus, through the above process, the ECU can determine whether the low-frequency antenna meets the preset control condition based on multiple methods.

[0118] 203. When the low-frequency antenna meets the preset control conditions, determine the increased target transmission cycle duration based on the target increase ratio corresponding to the transmission cycle duration of the low-frequency antenna for transmitting the low-frequency signal and the initial transmission cycle duration of the low-frequency antenna.

[0119] When the ECU determines that the low-frequency antenna meets the preset control conditions, it means that it is determined that the transmission frequency of the low-frequency antenna needs to be reduced, or the transmission cycle duration of the low-frequency antenna needs to be increased.

[0120] It should be understood that generally, without any adjustment to the transmission cycle duration or transmission frequency of the low-frequency antenna, the low-frequency antenna corresponds to a preset transmission cycle duration or a preset transmission frequency. The preset transmission cycle duration can be considered as the transmission cycle duration of the low-frequency antenna when the usage frequency of the remote control key is very high and frequent low-frequency signals need to be transmitted. Similarly, the preset transmission frequency can be considered as the transmission frequency of the low-frequency antenna when the usage frequency of the remote control key is very high and frequent low-frequency signals need to be transmitted.

[0121] In the embodiment of the present application, the preset transmission frequency of the low-frequency antenna is denoted as "N", and the preset transmission cycle duration of the low-frequency antenna is denoted as "M". The preset transmission frequency and the preset transmission cycle duration are reciprocal to each other.

[0122] When the low-frequency antenna needs to be adjusted, it is to reduce the transmission frequency of the low-frequency antenna or increase the transmission cycle duration of the low-frequency antenna. That is to say, the adjusted transmission frequency must be less than the preset transmission frequency, and the adjusted transmission cycle duration must be greater than the preset transmission cycle duration. The embodiment of the present application takes increasing the transmission cycle duration as an example for introduction, and the process of reducing the transmission frequency is the same and will not be elaborated.

[0123] Therefore, when it is necessary to increase the transmission cycle duration of the low-frequency antenna, the ECU can determine the increased target transmission cycle duration based on the target increase ratio corresponding to the transmission cycle duration and the initial transmission cycle duration. Among them, the process of controlling the vehicle's low-frequency antenna in the embodiment of the present application is executed periodically. Therefore, the initial transmission cycle duration is the transmission cycle duration of the low-frequency antenna obtained after the end of the previous process of controlling the vehicle's low-frequency antenna.

[0124] Optionally, the initial transmission cycle duration may be equal to the preset transmission cycle duration or may not be equal to the preset transmission cycle duration.

[0125] Exemplarily, for the initial transmission cycle duration, which is an inherent operating parameter of the low-frequency antenna, the ECU can directly obtain it. Or, the ECU can calculate the initial transmission cycle duration based on the time interval between the transmission of two adjacent low-frequency signals by the low-frequency antenna in the previous execution cycle.

[0126] For the target increase ratio, when the low-frequency antenna meets the preset control conditions, the ECU can obtain it through calculation.

[0127] In a possible implementation, the steps for determining the target increase ratio include:

[0128] Subtract the second cumulative count from the first cumulative count to obtain a cumulative count difference;

[0129] Determine a first ratio of the cumulative count difference to the second cumulative count;

[0130] Add the first cumulative count and the second cumulative count to obtain a cumulative count sum;

[0131] Determine a second ratio of the first cumulative count to the cumulative count sum;

[0132] Determine the target increase ratio according to the cumulative count difference, the first ratio, or the second ratio.

[0133] When determining whether the low-frequency antenna meets the preset control conditions as described above, the ECU specifically determines it according to the cumulative count difference, the aforementioned first ratio, or the second ratio. Based on this, when determining the target increase ratio, the ECU can correspondingly determine the target increase ratio through different values of the above several parameters.

[0134] For the calculation processes of the first ratio and the second ratio, please refer to the foregoing introduction and will not be elaborated here.

[0135] In a possible implementation, determining the target increase ratio according to the cumulative count difference, the first ratio, or the second ratio includes:

[0136] Determine the difference interval corresponding to the cumulative count difference, and determine the target increase ratio as the increase ratio corresponding to the difference interval; or,

[0137] Determine the first ratio interval corresponding to the first ratio, and determine the target increase ratio as the increase ratio corresponding to the first ratio interval; or,

[0138] Determine the second ratio interval corresponding to the second ratio, and determine the target increase ratio as the increase ratio corresponding to the second ratio interval.

[0139] Specifically, when determining the target increase ratio according to the cumulative count difference, the first ratio, or the second ratio, for any one of the parameters, in the embodiments of the present application, those skilled in the art can set different parameter intervals in advance and set corresponding increase ratios for each parameter interval. Based on this, when the ECU determines the target increase ratio through any one of the parameters, it can determine the parameter interval where the parameter is located, so as to obtain the increase ratio corresponding to the parameter interval, which is the target increase ratio.

[0140] Table 1 is a schematic table of the correspondence between multiple ratio intervals corresponding to the first ratio and multiple increase ratios.

[0141] Table 1

[0142]

[0143] Exemplarily, as shown in Table 1, when the first ratio is less than or equal to the first preset ratio, the ECU determines that it is necessary to increase the transmission cycle duration of the low-frequency antenna. In the embodiments of the present application, the increase ratios corresponding to different ratio intervals are preset.

[0144] Among them, the larger the first ratio, the more times the remote control key is used; the smaller the first ratio, the fewer times the remote control is used. Therefore, it can be seen from Table 1 that as the first ratio decreases, the increase ratio becomes larger and larger, indicating that when the remote control times decrease, the transmission cycle duration of the remote control times needs to be longer and longer, and the transmission frequency needs to be lower and lower.

[0145] After determining the first ratio of the cumulative number difference and the second cumulative number, the ECU can look up the table to determine the first ratio interval corresponding to the first ratio, and determine the increase ratio corresponding to the first ratio interval as the target increase ratio.

[0146] Table 2 is a schematic table of the correspondence between multiple difference intervals and multiple increase ratios.

[0147] Table 2

[0148]

[0149]

[0150] Exemplarily, as shown in Table 2, when the cumulative number difference is less than or equal to the preset number, the ECU determines that it is necessary to increase the transmission cycle duration of the low-frequency antenna. In the embodiments of the present application, the increase ratios corresponding to different difference intervals are preset.

[0151] Among them, the larger the cumulative number difference, the more times the remote control key is used; the smaller the cumulative number difference, the fewer times the remote control is used. Therefore, it can be seen from Table 2 that as the difference decreases, the increase ratio becomes larger and larger, indicating that when the remote control times decrease, the transmission cycle duration of the remote control times needs to be longer and longer, and the transmission frequency needs to be lower and lower.

[0152] After determining the cumulative number difference, the ECU can look up the table to determine the difference interval corresponding to the cumulative number difference, and determine the increase ratio corresponding to the difference interval as the target increase ratio.

[0153] Table 3 is a schematic table of the correspondence between multiple ratio intervals corresponding to the second ratio and the increase ratio.

[0154] Table 3

[0155]

[0156]

[0157] Exemplarily, as shown in Table 3, when the second ratio is less than or equal to the second preset ratio, the ECU determines that it is necessary to increase the transmission cycle duration of the low-frequency antenna. In the embodiments of the present application, different increase ratios corresponding to different ratio intervals are preset.

[0158] Among them, the larger the second ratio, the more times the remote control key is used; the smaller the second ratio, the fewer times the remote control is used. Therefore, it can be seen from Table 3 that as the second ratio decreases, the increase ratio becomes larger and larger, indicating that when the remote control times decrease, the transmission cycle duration of the remote control times needs to be longer and longer, and the transmission frequency needs to be lower and lower.

[0159] After determining the second ratio, the ECU can look up the table to determine the second ratio interval corresponding to the second ratio, and determine the increase ratio corresponding to the second ratio interval as the target increase ratio.

[0160] Thus, through the above steps, the ECU can calculate the target increase ratio required to increase the transmission cycle duration.

[0161] In the above technical solution, when determining the target increase ratio of the low-frequency antenna transmission cycle duration, according to different determination parameters, multiple different parameter intervals are set in the present application. Different increase ratios correspond to different parameter intervals. The vehicle can obtain the increase ratio by determining the parameter interval where the parameter is located. Setting different increase ratios for different parameter intervals can achieve stepped adjustment of the low-frequency antenna transmission frequency or transmission cycle duration, and avoid the problem of inaccurate adjustment caused by a single increase ratio.

[0162] After obtaining the target increase ratio and the initial transmission cycle duration, the ECU can multiply the target increase ratio by the initial transmission cycle duration to obtain the target transmission cycle duration.

[0163] 204, control the low-frequency antenna to work with the target transmission cycle duration.

[0164] After obtaining the target transmission cycle duration of the low-frequency antenna, the ECU can control the low-frequency antenna to transmit low-frequency signals with the current target transmission cycle duration.

[0165] In addition, based on the foregoing analysis, it is possible that the duration of the initial transmission cycle is equal to the preset transmission cycle duration, or it may not be the preset transmission cycle duration. For example, in the previous control process, the ECU may also increase the transmission cycle duration of the low-frequency antenna.

[0166] In the current control process, if the low-frequency antenna does not meet the preset control conditions, it indicates that the usage frequency of the remote control key has been very high during the past historical period. When the duration of the initial transmission cycle is not equal to the preset transmission cycle duration, it means that the transmission frequency of the low-frequency antenna has decreased. When the usage frequency of the remote control key is relatively high, if the transmission frequency of the low-frequency antenna decreases, it may cause the ECU to fail to detect the remote control key in a timely manner during subsequent unlocking and locking processes. Therefore, in this case, the ECU needs to increase the transmission frequency of the low-frequency antenna again.

[0167] In a possible implementation manner, the method further includes;

[0168] When the low-frequency antenna does not meet the preset control conditions, determine whether the duration of the initial transmission cycle is equal to the preset transmission cycle duration;

[0169] When the duration of the initial transmission cycle is not equal to the preset transmission cycle duration, control the low-frequency antenna to operate with the preset transmission cycle duration.

[0170] When the usage frequency of the remote control key is high, the ECU can compare the duration of the initial transmission cycle with the preset transmission cycle duration. When the duration of the initial transmission cycle is equal to the preset transmission cycle duration, it indicates that the current transmission frequency of the low-frequency antenna is the preset transmission frequency and no adjustment is required. When the duration of the initial transmission cycle is not equal to the preset transmission cycle duration, specifically when the duration of the initial transmission cycle is greater than the preset transmission cycle duration, it means that the current transmission frequency of the low-frequency antenna is less than the preset transmission frequency. To prevent the ECU from failing to detect in a timely manner during subsequent frequent use of the remote control key by the user for unlocking and locking. The ECU needs to readjust the transmission frequency of the low-frequency antenna to the preset transmission frequency, that is, adjust the transmission cycle duration of the low-frequency antenna from the initial transmission cycle duration to the preset transmission cycle duration.

[0171] In the above technical solution, when the low-frequency antenna does not meet the preset control conditions, it indicates that the usage frequency of the remote control key is very high, that is, the vehicle needs to frequently drive the low-frequency antenna to transmit low-frequency signals. In this case, the vehicle can compare the initial transmission cycle duration before this adjustment with the preset transmission cycle duration. When the initial transmission cycle duration is not equal to the preset transmission cycle duration, it means that the initial transmission cycle duration is greater than the preset transmission cycle duration, that is, the initial transmission frequency is less than the preset transmission frequency. If the low-frequency antenna is continuously controlled to work at a lower initial transmission frequency, when the usage frequency of the remote control key is very high, the vehicle may not be able to detect the remote control key in time, resulting in a decline in user experience. Therefore, when the low-frequency antenna does not meet the preset control conditions, the vehicle needs to re-control the vehicle to work with the preset transmission cycle duration (or, preset transmission frequency) to ensure timely detection of the remote control key, thereby improving the success rate of vehicle unlocking and locking.

[0172] In summary, the present application proposes a method for controlling a vehicle low-frequency antenna. Specifically, in the implementation process of this method, the vehicle obtains the first cumulative number of times that the user uses the first key to control the vehicle to unlock and lock, and the second cumulative number of times that the second key is used to control the vehicle to unlock and lock within the historical driving duration. The first key is a remote control key, and the second key is a digital key. Further, when the vehicle determines that the low-frequency antenna meets the preset control conditions based on the first cumulative number and the second cumulative number, it increases the transmission cycle duration of the low-frequency antenna. The preset control condition is a condition for reducing the transmission frequency of the low-frequency antenna or increasing the transmission cycle duration of the low-frequency antenna. The above-mentioned increase in the transmission cycle duration of the low-frequency antenna means that the working duration of the low-frequency antenna per unit time is reduced, that is, the transmission frequency of the low-frequency antenna is reduced, and the number of times of transmitting low-frequency signals is reduced. Thus, the solution of the present application can flexibly reduce the transmission frequency of the low-frequency antenna in combination with the difference in the types of keys when the vehicle unlocks and locks, achieving the effect of energy saving and consumption reduction.

[0173] To facilitate understanding of the overall process of the embodiments of the present application, Figure 3 the overall implementation process of the embodiments of the present application is provided.

[0174] Figure 3 is a schematic flowchart of another method for controlling a vehicle low-frequency antenna provided by the embodiments of the present application.

[0175] Exemplarily, as Figure 3 shown, this method 300 includes steps 301-step 309:

[0176] 301. Obtain the first cumulative number of times of controlling the vehicle door lock state through the first key and the second cumulative number of times of controlling the door lock state corresponding to the second key within a preset duration before the current moment.

[0177] 302. Calculate the difference between the first cumulative count and the second cumulative count to obtain the cumulative count difference; determine the first ratio of the cumulative count difference to the second cumulative count; sum the first cumulative count and the second cumulative count to obtain the cumulative count sum; determine the second ratio of the first cumulative count to the cumulative count sum.

[0178] 303. Determine whether the low-frequency antenna meets the preset control condition according to the cumulative count difference or the first ratio; or determine whether the low-frequency antenna meets the preset control condition according to the second ratio.

[0179] If the low-frequency antenna meets the preset control condition, execute step 304;

[0180] If the low-frequency antenna does not meet the preset control condition, execute step 308.

[0181] 304. Determine the difference interval corresponding to the cumulative count difference; or determine the first ratio interval corresponding to the first ratio; or determine the second ratio interval corresponding to the second ratio.

[0182] 305. Determine that the target increase ratio is the increase ratio corresponding to the difference interval; or determine that the target increase ratio is the increase ratio corresponding to the first ratio interval; or determine that the target increase ratio is the increase ratio corresponding to the second ratio interval.

[0183] 306. Determine the increased target transmission cycle duration according to the initial transmission cycle duration and the target increase ratio.

[0184] 307. Control the low-frequency antenna to work with the target transmission cycle duration.

[0185] 308. When the low-frequency antenna does not meet the preset control condition, determine whether the initial transmission cycle duration is equal to the preset transmission cycle duration.

[0186] 309. When the initial transmission cycle duration is not equal to the preset transmission cycle duration, control the low-frequency antenna to work with the preset transmission cycle duration.

[0187] The above method 300 and method 200 have the same inventive concept. For specific details, please refer to the introduction in method 200 and will not be elaborated here.

[0188] Figure 4 It is a schematic structural diagram of a device for controlling a vehicle low-frequency antenna provided by an embodiment of the present application.

[0189] Exemplarily, as Figure 4 shown, the device 400 includes:

[0190] A parameter acquisition module 401 is configured to acquire a first cumulative count of the number of times the vehicle door lock state is controlled by a first key within a preset duration before the current moment, and a second cumulative count corresponding to the vehicle door lock state controlled by a second key; the vehicle door lock state is used to indicate whether the vehicle door can be opened.

[0191] A condition judgment module 402 determines whether the low-frequency antenna of the vehicle meets a preset control condition according to the first cumulative count and the second cumulative count; the low-frequency antenna is used to transmit a low-frequency signal, and the low-frequency signal is used to enable communication between the vehicle and the first key, or enable communication between the vehicle and the second key.

[0192] A period determination module 403, when the low-frequency antenna meets the preset control condition, determines an increased target transmission period duration according to a target increase ratio corresponding to the transmission period duration of the low-frequency antenna for transmitting the low-frequency signal and the initial transmission period duration of the low-frequency antenna.

[0193] An antenna control module 404 controls the low-frequency antenna to operate with the target transmission period duration.

[0194] In a possible implementation manner, the condition judgment module 402 is specifically configured to: calculate the difference between the first cumulative count and the second cumulative count to obtain a cumulative count difference; determine a first ratio of the cumulative count difference to the second cumulative count; determine whether the low-frequency antenna meets the preset control condition according to the cumulative count difference or the first ratio; or, calculate the sum of the first cumulative count and the second cumulative count to obtain a cumulative count sum value; determine a second ratio of the first cumulative count to the cumulative count sum value; determine whether the low-frequency antenna meets the preset control condition according to the second ratio.

[0195] In a possible implementation manner, the condition judgment module 402 is further configured to: when the cumulative count difference is greater than a preset count, determine that the low-frequency antenna does not meet the preset control condition; when the cumulative count difference is less than or equal to the preset count, determine that the low-frequency antenna meets the preset control condition; or, when the first ratio is greater than a first preset ratio, determine that the low-frequency antenna does not meet the preset control condition; when the first ratio is less than or equal to the first preset ratio, determine that the low-frequency antenna meets the preset control condition.

[0196] In a possible implementation manner, the condition judgment module 402 is further configured to: when the second ratio is greater than a second preset ratio, determine that the low-frequency antenna does not meet the preset control condition; when the second ratio is less than or equal to the second preset ratio, determine that the low-frequency antenna meets the preset control condition.

[0197] In a possible implementation, the period determination module 403 is further configured to: calculate the difference between the first cumulative count and the second cumulative count to obtain a cumulative count difference; determine a first ratio of the cumulative count difference to the second cumulative count; calculate the sum of the first cumulative count and the second cumulative count to obtain a cumulative count sum; determine a second ratio of the first cumulative count to the cumulative count sum; and determine the target increase ratio according to the cumulative count difference, the first ratio, or the second ratio.

[0198] In a possible implementation, the period determination module 403 is specifically configured to: determine a difference interval corresponding to the cumulative count difference, and determine the target increase ratio as the increase ratio corresponding to the difference interval; or, determine a first ratio interval corresponding to the first ratio, and determine the target increase ratio as the increase ratio corresponding to the first ratio interval; or, determine a second ratio interval corresponding to the second ratio, and determine the target increase ratio as the increase ratio corresponding to the second ratio interval.

[0199] Optionally, the apparatus further includes: a processing module, configured to determine whether the initial transmission period duration is equal to a preset transmission period duration when the low-frequency antenna does not meet the preset control condition; and control the low-frequency antenna to operate with the preset transmission period duration when the initial transmission period duration is not equal to the preset transmission period duration.

[0200] Figure 5 It is a schematic structural diagram of a vehicle provided by an embodiment of the present application.

[0201] Exemplarily, as Figure 5 shown, the vehicle 500 includes: a memory 501 and a processor 502. Among them, an executable program code 5011 is stored in the memory 501, and the processor 502 is configured to call and execute the executable program code 5011 to execute a method for controlling a low-frequency antenna of a vehicle.

[0202] In addition, an embodiment of the present application also protects an apparatus, which may include a memory and a processor. Among them, an executable program code is stored in the memory, and the processor is configured to call and execute the executable program code to execute a method for controlling a low-frequency antenna of a vehicle provided by an embodiment of the present application.

[0203] In this embodiment, the apparatus may be divided into functional modules according to the above method examples. For example, each functional module may correspond, or two or more functions may be integrated into one processing module. The above integrated modules may be implemented in the form of hardware. It should be noted that the division of modules in this embodiment is illustrative, only a logical function division, and there may be other division methods in actual implementation.

[0204] In the case where each functional module is divided corresponding to each function, the device may further include a parameter acquisition module, a condition judgment module, a period determination module, an antenna control module, etc. It should be noted that all relevant contents of each step involved in the above method embodiments can be cited in the function descriptions of the corresponding functional modules, and will not be elaborated here.

[0205] It should be understood that the device provided in this embodiment is used to execute the above method for controlling a vehicle's low-frequency antenna, so the same effects as the above implementation method can be achieved.

[0206] In the case of adopting an integrated unit, the device may include a processing module and a storage module. Among them, when the device is applied to a vehicle, the processing module can be used to control and manage the vehicle's actions. The storage module can be used to support the vehicle to execute relevant program codes, etc.

[0207] Among them, the processing module can be a processor or a controller, which can implement or execute various exemplary logic blocks, modules, and circuits shown in combination with the disclosure content of this application. The processor can also be a combination that realizes computing functions, such as including a combination of one or more microprocessors, a combination of digital signal processing (DSP) and a microprocessor, etc. The storage module can be a memory.

[0208] In addition, the device provided in the embodiments of this application can specifically be a chip, a component, or a module. The chip may include a connected processor and a memory; among them, the memory is used to store instructions, and when the processor calls and executes the instructions, the chip can execute the method for controlling a vehicle's low-frequency antenna provided in the above embodiments.

[0209] This embodiment also provides a computer-readable storage medium, in which computer program code is stored. When the computer program code runs on a computer, it causes the computer to execute the above relevant method steps to implement the method for controlling a vehicle's low-frequency antenna provided in the above embodiments.

[0210] This embodiment also provides a computer program product. When the computer program product runs on a computer, it causes the computer to execute the above relevant steps to implement the method for controlling a vehicle's low-frequency antenna provided in the above embodiments.

[0211] Among them, the device, computer-readable storage medium, computer program product, or chip provided in this embodiment are all used to execute the corresponding method provided above. Therefore, the beneficial effects that can be achieved can refer to the beneficial effects in the corresponding method provided above, and will not be elaborated here.

[0212] Through the description of the above embodiments, those skilled in the art can understand that for the convenience and conciseness of description, only the division of the above functional modules is used as an example. In actual applications, the above functions can be allocated to different functional modules as needed, that is, the internal structure of the device can be divided into different functional modules to complete all or part of the functions described above.

[0213] In the embodiments provided in the present application, it should be understood that the disclosed device and method can be implemented in other ways. For example, the device embodiments described above are only illustrative. For example, the division of modules or units is only a logical function division. In actual implementation, there may be other division methods. For example, multiple units or components can be combined or integrated into another device, or some features can be ignored or not executed. Another point is that the displayed or discussed mutual coupling or direct coupling or communication connection can be through some interfaces. The indirect coupling or communication connection of the device or unit can be electrical, mechanical or other forms.

[0214] The above content is only the specific implementation manner of the present application, but the protection scope of the present application is not limited thereto. Any person skilled in the art within the technical scope disclosed in the present application can easily think of changes or substitutions, which should all be covered by the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. A method for controlling a vehicle low-frequency antenna, characterized in that: The method comprises: Obtaining a first cumulative number of times a vehicle door lock state is controlled by a first key within a preset time period before a current moment, and a second cumulative number of times corresponding to the vehicle door lock state is controlled by a second key; the vehicle door lock state is used to indicate whether the vehicle door can be opened; Determining whether a low-frequency antenna of the vehicle meets a preset control condition according to the first cumulative number and the second cumulative number; the low-frequency antenna is used to transmit a low-frequency signal, and the low-frequency signal is used to enable the vehicle to communicate with the first key, or to enable the vehicle to communicate with the second key; When the low-frequency antenna satisfies the preset control condition, determining the increased target transmission cycle duration according to the target increase ratio corresponding to the transmission cycle duration of the low-frequency signal transmitted by the low-frequency antenna and the initial transmission cycle duration of the low-frequency antenna; The low frequency antenna is controlled to operate at the target transmission cycle duration.

2. The method according to claim 1, characterized in that The determining, based on the first accumulated number and the second accumulated number, whether the low-frequency antenna of the vehicle meets a preset control condition includes: Difference is calculated between the first cumulative number and the second cumulative number to obtain a cumulative number difference; a first ratio of the cumulative number difference to the second cumulative number is determined; and according to the cumulative number difference or the first ratio, whether the low-frequency antenna satisfies the preset control condition is determined; or, The first cumulative number of times and the second cumulative number of times are summed to obtain a cumulative number sum value; a second ratio of the first cumulative number of times to the cumulative number sum value is determined; and according to the second ratio, whether the low-frequency antenna meets the preset control condition is determined.

3. The method according to claim 2, characterized in that The determining, according to the accumulated number difference or the first ratio, whether the low-frequency antenna meets the preset control condition includes: When the difference in the cumulative times is greater than the preset times, it is determined that the low-frequency antenna does not meet the preset control condition; when the difference in the cumulative times is less than or equal to the preset times, it is determined that the low-frequency antenna meets the preset control condition; or, When the first ratio is greater than a first preset ratio, determining that the low-frequency antenna does not meet the preset control condition; When the first ratio is less than or equal to the first preset ratio, it is determined that the low-frequency antenna meets the preset control condition.

4. The method according to claim 2, characterized in that: The determining, according to the second ratio, whether the low-frequency antenna satisfies the preset control condition comprises: When the second ratio is greater than a second preset ratio, determining that the low-frequency antenna does not meet the preset control condition; When the second ratio is less than or equal to the second preset ratio, it is determined that the low-frequency antenna meets the preset control condition.

5. The method according to claim 1, characterized in that The step of determining the target increase ratio comprises: Calculating the difference between the first cumulative number and the second cumulative number to obtain a cumulative number difference; Determine a first ratio of the cumulative number of times difference to the second cumulative number of times; Summing the first cumulative number of times and the second cumulative number of times to obtain a cumulative number sum value; determining a second ratio of the first cumulative number of times to the cumulative number of times and value; The target increase ratio is determined according to the accumulated number of times difference, the first ratio or the second ratio.

6. The method according to claim 5, characterized in that The step of determining the target increase ratio according to the cumulative number of times difference, the first ratio or the second ratio includes: Determine the difference interval corresponding to the difference of the cumulative times, and determine the target increase ratio as the increase ratio corresponding to the difference interval; or, determining a first ratio interval corresponding to the first ratio, and determining the target increase ratio to be the increase ratio corresponding to the first ratio interval; or, A second ratio interval corresponding to the second ratio is determined, and the target increase ratio is determined to be the increase ratio corresponding to the second ratio interval.

7. The method according to claim 1, characterized in that The method further comprises: In the case where the low-frequency antenna does not meet the preset control condition, determining whether the initial transmission cycle duration is equal to the preset transmission cycle duration; When the initial transmission cycle duration is not equal to the preset transmission cycle duration, the low-frequency antenna is controlled to operate at the preset transmission cycle duration.

8. A device for controlling a vehicle low-frequency antenna, characterized in that: The device comprises: A parameter acquisition module, used to acquire a first cumulative number of times a vehicle door lock state is controlled by a first key within a preset time period before a current moment, and a second cumulative number of times corresponding to the vehicle door lock state is controlled by a second key; the vehicle door lock state is used to indicate whether the vehicle door can be opened; a condition judgment module, which determines whether the low-frequency antenna of the vehicle meets a preset control condition according to the first cumulative number and the second cumulative number; the low-frequency antenna is used to transmit a low-frequency signal, and the low-frequency signal is used to enable the vehicle to communicate with the first key, or to enable the vehicle to communicate with the second key; A cycle determination module, when the low-frequency antenna satisfies the preset control condition, determines the increased target transmission cycle duration according to the target increase ratio corresponding to the transmission cycle duration of the low-frequency signal transmitted by the low-frequency antenna and the initial transmission cycle duration of the low-frequency antenna; The antenna control module controls the low-frequency antenna to operate at the target transmission cycle duration.

9. A vehicle, characterized in that: The vehicle comprises: A memory for storing executable program codes; A processor, configured to call and run the executable program code from the memory, so that the vehicle executes the method according to any one of claims 1 to 7.

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

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