Method, device and vehicle for controlling automatic locking of a vehicle

Abstract

The application provides a method, device and vehicle for controlling automatic locking of a vehicle. The method comprises: determining whether an initial key position can be determined in response to a wake-up of a key search function; controlling a target low-frequency antenna to cyclically send a first field strength carrier in response to the initial key position not being determined, the target low-frequency antenna being two of the plurality of low-frequency antennas; and controlling the vehicle to automatically lock based on first feedback information in response to the first feedback information being received. The execution is such that the time for searching for the key is shortened, the frequency of searching for the key is increased, the key and the change in the key position can be quickly and accurately detected, and the vehicle can be timely and accurately controlled to automatically lock.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of vehicles, in particular to a method and device for controlling automatic locking of a vehicle and the vehicle. BACKGROUND

[0002] With the development of the automotive industry, keyless entry and keyless start are increasingly common on vehicles. A keyless entry and keyless start system detects a key based on signals sent by four or six low-frequency antennas arranged on a vehicle, and then implements keyless start and off-vehicle locking functions.

[0003] However, the prerequisite for implementing the off-vehicle locking function is to detect a change in the key before locking. However, the existing detection time period for the key is too long, and the detection accuracy is not high enough, so that the key is often not detected, resulting in failure of the off-vehicle locking function. SUMMARY

[0004] Therefore, the present application aims to provide a method and device for controlling automatic locking of a vehicle, and the vehicle, to solve the problem of failure of the off-vehicle locking function.

[0005] To achieve the above purpose, the present application provides a method for controlling automatic locking of a vehicle in a first aspect. The method is executed based on a keyless entry and start system, and the keyless entry and start system includes multiple low-frequency antennas. The method includes the following steps.

[0006] In response to the key search function being awakened, it is determined whether the initial key position can be determined.

[0007] In response to the initial key position being unable to be determined, a target low-frequency antenna is controlled to cyclically send a first field strength carrier. The target low-frequency antenna is two of the multiple low-frequency antennas.

[0008] In response to receiving first feedback information, the vehicle is automatically locked based on the first feedback information.

[0009] Optionally, the multiple low-frequency antennas include a first low-frequency antenna arranged in the vehicle, a second low-frequency antenna and a third low-frequency antenna arranged on both sides of the vehicle body, and a fourth low-frequency antenna arranged at the rear of the vehicle.

[0010] The target low-frequency antenna is controlled to cyclically send the first field strength carrier, including the following steps.

[0011] The first low-frequency antenna and a preset low-frequency antenna are controlled to cyclically send the first field strength carrier, or the fourth low-frequency antenna and the preset low-frequency antenna are controlled to cyclically send the first field strength carrier. The preset low-frequency antenna is the second low-frequency antenna or the third low-frequency antenna.

[0012] Optionally, the control of the preset low-frequency antenna and the first low-frequency antenna to cyclically transmit the first field strength carrier wave comprises:

[0013] The preset time is taken as a cycle interval, and the following steps are cyclically executed:

[0014] The preset low-frequency antenna is controlled to transmit the first field strength carrier wave, and after a preset time interval, the first low-frequency antenna is controlled to transmit the first field strength carrier wave;

[0015] Or the preset low-frequency antenna and the first low-frequency antenna are controlled to simultaneously transmit the first field strength carrier wave.

[0016] Optionally, the judgment of whether the initial key position can be determined comprises:

[0017] The multiple low-frequency antennas are controlled to sequentially execute a key search strategy, and the key search strategy comprises controlling a low-frequency antenna to transmit initial authentication information, and simultaneously controlling other low-frequency antennas to transmit initial field strength carrier waves;

[0018] In response to receiving the initial feedback information, it is judged whether the initial feedback information is valid;

[0019] In response to the initial feedback information being valid, it is determined that the initial key position can be determined;

[0020] In response to the initial feedback information being invalid, it is determined that the initial key position cannot be determined.

[0021] Optionally, the judgment of whether the initial feedback information is valid comprises:

[0022] The initial feedback information is decrypted to obtain decrypted initial information;

[0023] Based on the decrypted initial information, multiple initial field strength values are obtained, and the multiple initial field strength values correspond to the multiple initial field strength carrier waves one by one;

[0024] In response to at least one of the initial field strength values being a preset invalid value, it is determined that the initial feedback information is invalid.

[0025] Optionally, the control of the vehicle to be automatically locked based on the first feedback information comprises:

[0026] All low-frequency antennas are controlled to cyclically transmit second field strength carrier waves;

[0027] In response to receiving second feedback information, the vehicle is controlled to be automatically locked based on the second feedback information.

[0028] Optionally, the control of the vehicle to be automatically locked based on the second feedback information comprises:

[0029] In response to the second feedback information being valid, the position of the vehicle key is determined based on the second feedback information;

[0030] In response to the vehicle key position being located outside the preset area, the vehicle is automatically controlled to be locked.

[0031] Optionally, the controlling the vehicle to be automatically locked based on the second feedback information further comprises:

[0032] In response to the vehicle key position being located inside the preset area, the controlling of the all low-frequency antennas to cyclically transmit the second field strength carrier wave, receive the second feedback information and determine the vehicle key position based on the second feedback information is continued until the determined vehicle key position is located outside the preset area, and the vehicle is automatically controlled to be locked.

[0033] Or in response to the vehicle key position being located inside the preset area, the controlling of the all low-frequency antennas to cyclically transmit the second field strength carrier wave is continued until the number of times of cyclic execution reaches a preset number of times, and no second feedback information is received or the received second feedback information is invalid, and the vehicle is automatically controlled to be locked.

[0034] The second aspect of the present application provides an electronic device, comprising a memory, a processor and a computer program stored in the memory and running on the processor, and the processor implements the method of any one of the above first aspect when executing the program.

[0035] The third aspect of the present application provides a vehicle comprising the electronic device of the above second aspect.

[0036] As can be seen from the above, the method, device and vehicle for controlling the vehicle to be automatically locked provided by the present application, when the initial key position cannot be determined, the target low-frequency antenna is controlled to cyclically transmit the first field strength carrier wave. Compared with the preset strategy that one of the four low-frequency antennas transmits low-frequency data and the other four transmit carrier waves, only controlling two antennas to cyclically transmit the first field strength carrier wave can reduce the time of each round of key searching, increase the frequency of key searching, and thus the vehicle body controller can transmit the first field strength carrier wave to the key controller at a faster frequency, the frequency and probability of the key controller receiving the first field strength carrier wave are also greatly increased, and the frequency and probability of the key controller feeding back the first feedback information to the vehicle body controller are also greatly increased, so that the vehicle body controller can quickly receive the first feedback information, and control the vehicle to be automatically locked based on the first feedback information. In this way, the entire key searching time is shortened, the key searching frequency is increased, and thus the key and the change of the key position can be quickly and accurately detected, and the vehicle can be timely and accurately controlled to be automatically locked. BRIEF DESCRIPTION OF DRAWINGS

[0037] In order to more clearly illustrate the technical solutions in the application or the related art, the drawings needed to be used in the embodiments or the related art description will be briefly introduced. Obviously, the drawings in the following description are only embodiments of the application, and other drawings can be obtained by those skilled in the art without creative effort on the basis of these drawings.

[0038] Figure 1 A schematic diagram of arranging four low-frequency antennas on an existing vehicle;

[0039] Figure 2 A schematic diagram of an existing key finding strategy;

[0040] Figure 3 A schematic diagram of the flow of the method for controlling the automatic locking of the vehicle according to the embodiments of the application;

[0041] Figure 4 A schematic diagram of the device for controlling the automatic locking of the vehicle according to the embodiments of the application;

[0042] Figure 5 A schematic diagram of the electronic device according to the embodiments of the application. DETAILED DESCRIPTION

[0043] In order to make the purposes, technical solutions and advantages of the application clearer, the application will be further described in detail below with reference to specific embodiments and drawings.

[0044] It should be noted that, unless otherwise defined, the technical terms or scientific terms used in the embodiments of the application should be understood as the usual meanings understood by those skilled in the art to which the embodiments of the application belong. The terms "first", "second" and similar terms used in the embodiments of the application do not represent any order, quantity or importance, but are only used to distinguish different components. The terms "include" or "contain" and similar terms mean that the elements or objects before the terms cover the elements or objects listed after the terms and their equivalents, and do not exclude other elements or objects. The terms "connect" or "connected" and similar terms are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. The terms "up", "down", "left", "right" and the like are only used to represent relative positional relationships, and when the absolute positions of the described objects change, the relative positional relationships may also change accordingly.

[0045] The keyless entry and start system (PEPS) includes an antenna system, Figure 1 is an exemplary structural schematic diagram of the antenna system of the PEPS system. As Figure 1As shown, the antenna system includes: a first low-frequency antenna 110 arranged at a middle position in the vehicle interior; a second low-frequency antenna 120 and a third low-frequency antenna 130 arranged at the driver side and the front passenger side of the vehicle exterior respectively; and a fourth low-frequency antenna 140 arranged at a trunk position in the vehicle interior.

[0046] The first low-frequency antenna 110, the second low-frequency antenna 120, the third low-frequency antenna 130 and the fourth low-frequency antenna 140 are configured to generate field strength carriers for searching for the key; the relative positions between the first low-frequency antenna 110, the second low-frequency antenna 120, the third low-frequency antenna 130 and the fourth low-frequency antenna 140 are configured to enable the antenna system to generate field strength carriers capable of covering the entire vehicle interior; and the fourth low-frequency antenna 140 is configured to generate field strength carriers covering the external area of the trunk of the vehicle.

[0047] In the related art, the body controller detects the key by controlling the four low-frequency antennas to send signals, thereby realizing the keyless start and off-car locking functions. For example, see Figure 2 As shown, after the key search function is awakened, the body controller controls the key search strategy to be executed in the order of the second low-frequency antenna 120, the third low-frequency antenna 130, the first low-frequency antenna 110 and the fourth low-frequency antenna 140, and the key search strategy is that one of the low-frequency antennas sends low-frequency data, and then all the low-frequency antennas are controlled to send field strength carriers in turn. After the key controller receives the low-frequency data and the four field strength carriers, it returns high-frequency data based on the low-frequency data and the field strength carriers. After the body controller receives the high-frequency data, it decrypts the high-frequency data, and then calculates the key position based on the high-frequency data. If the calculated key position is in the unlocking area, it means that the key search strategy is correct at this time, and the key position is marked as the starting position, and then the key search strategy is continued to be executed until the finally determined key position is in the locking area, and then the vehicle can be controlled to be locked.

[0048] However, the above-described key search process is only in an ideal state. In fact, due to spatial electromagnetic interference and the limitation of low-frequency communication distance, the key is often not detected in actual use.

[0049] This is because, like the above-described process of searching for the key, performing a key search strategy includes a low-frequency antenna sending low-frequency data, all four low-frequency antennas sequentially sending field strength carriers, which takes about 60 ms, and then waiting for the feedback of the key controller, which takes about 140 ms, that is, performing a key search strategy takes at least 200 ms. If the key search strategy is sequentially performed in the order of the second low-frequency antenna 120, the third low-frequency antenna 130, the first low-frequency antenna 110, and the fourth low-frequency antenna 140, then the time for four low-frequency antennas to poll a week is about 800 ms. Thus, the time period for four antennas to poll a week is too long, resulting in the inability to sensitively detect changes in the key position, the detection accuracy is not high enough, and the key is often not detected.

[0050] However, the prerequisite for implementing the off-car locking function is to detect the change of the key to lock, for example, to detect the key from the unlocking area to the locking area, or to start detecting the key and not to detect the key after a period of time. The vehicle automatic locking function can be executed. If the detection period is too long and the detection frequency is too low to detect the key or the change of the key position, the off-car locking function will fail.

[0051] Therefore, how to shorten the time of each round of key search and speed up the frequency of key search to quickly and accurately detect the key and the change of the key position, and then timely and accurately control the vehicle automatic locking is a problem to be solved.

[0052] Based on this, referring to Figure 3 The application provides a method for controlling vehicle automatic locking, which is executed based on a keyless entry and start system including a plurality of low-frequency antennas, and is executed by a body controller.

[0053] The method specifically includes:

[0054] Step S100, in response to the key search function being awakened, determining whether the initial key position can be determined;

[0055] Step S200, in response to the initial key position being unable to be determined, controlling the target low-frequency antenna to cyclically send the first field strength carrier, the target low-frequency antenna being two of the plurality of low-frequency antennas;

[0056] Step S300, in response to receiving the first feedback information, controlling the vehicle automatic locking based on the first feedback information.

[0057] Specifically, the low-frequency antenna is an antenna with a specific function on the vehicle. The antennas of the vehicle include low-frequency antennas and high-frequency antennas, each of which plays a different role. Among them, the low-frequency antenna induces voltage by receiving changes in the electromagnetic field, and receives and transmits signals by transmitting current to generate an electromagnetic field, and the signals received and transmitted by the low-frequency antenna are mainly amplitude modulation signals (AM signals). The high-frequency antenna generates a weak induced current by sensing changes in the electromagnetic field, and receives and transmits signals by transmitting current to generate a strong electromagnetic field, and the signals received and transmitted by the high-frequency antenna are mainly frequency modulation band signals (referred to as "FM signals") or Global Positioning System signals (GPS signals).

[0058] Real-time monitoring of the state change of the vehicle door and acquisition of the image in the vehicle, when the image in the vehicle shows that there is no user in the vehicle, and the state of the vehicle door is closed, the key finding function is awakened. At this time, the body controller continues to determine the initial key position according to the preset strategy. The preset strategy is a preset preliminary key finding strategy, and the prediction strategy can be the aforementioned key finding strategy.

[0059] If the initial key position can be determined, it means that the preset strategy is suitable for the current situation, and the preliminary key finding strategy is continued to be executed to determine the timing of automatic locking of the vehicle.

[0060] If the initial key position cannot be determined, it means that the preset strategy is not suitable for the current situation, and if the preset strategy is continued to be executed, the time period required by the preset strategy will be very long, which will result in a long time for finding the key and a low frequency of finding the key, so that the position of the key cannot be quickly determined.

[0061] Therefore, if the initial key position cannot be determined, the target low-frequency antenna is controlled to cyclically transmit the first field strength carrier, and the target low-frequency antenna is two of the plurality of low-frequency antennas.

[0062] When the target low-frequency antenna is two, the two target low-frequency antennas are controlled to cyclically transmit the first field strength carrier. At this time, compared with the way that one of the four low-frequency antennas in the preset strategy transmits low-frequency data and the other four transmit carriers, only controlling two antennas to cyclically transmit the first field strength carrier can greatly shorten the time of each round of key finding, improve the frequency of key finding, and thus the key can be found more quickly and accurately.

[0063] It is worth noting that due to the limitation of low-frequency communication distance, only when the key controller is within a preset distance from the low-frequency antenna, the key controller can receive the first field intensity carrier sent by the low-frequency antenna. Therefore, two low-frequency antennas are used to send the first field intensity carrier, when the key controller is very close to the two low-frequency antennas, the key controller will receive the first field intensity carrier sent by the two low-frequency antennas; when the key controller is close to one of the low-frequency antennas but far away from the other low-frequency antenna, the key controller can only receive the first field intensity carrier of one low-frequency antenna; when the key controller is far away from the two low-frequency antennas, the key controller cannot receive the first field intensity carrier sent by the two low-frequency antennas.

[0064] When the key controller receives the first field intensity carrier, the corresponding carrier value is generated, and the carrier value and the corresponding low-frequency antenna number are encrypted to obtain the first feedback information. After the vehicle body controller receives the first feedback information, it can be determined that the key controller is located near the target low-frequency antenna, so it can be determined that the key is in the unlocking area, and it is determined that the key is found.

[0065] After the vehicle body controller receives the first feedback information, the specific position of the key is determined based on the first feedback information, and the vehicle is automatically controlled to be locked.

[0066] In this application, when the initial key position cannot be determined, the target low-frequency antenna is controlled to cyclically send the first field intensity carrier. Compared with the preset strategy that one of the four low-frequency antennas sends low-frequency data and the other four low-frequency antennas send carriers, only controlling two antennas to cyclically send the first field intensity carrier can reduce the time of each round of key searching, increase the frequency of key searching, and thus the vehicle body controller can send the first field intensity carrier to the key controller more frequently, the frequency and probability of the key controller receiving the first field intensity carrier are also greatly increased, and the frequency and probability of the key controller feeding back the first feedback information to the vehicle body controller are also greatly increased, so that the vehicle body controller can quickly receive the first feedback information and control the vehicle to be automatically locked based on the first feedback information. In this way, the time for searching the key is shortened, the frequency of searching the key is increased, and the key and the change of the key position can be quickly and accurately detected, so that the vehicle can be automatically controlled to be locked in time and accurately.

[0067] In some embodiments, the plurality of low-frequency antennas include a first low-frequency antenna arranged in the vehicle, a second low-frequency antenna and a third low-frequency antenna arranged on the two sides of the vehicle body respectively, and a fourth low-frequency antenna arranged at the rear of the vehicle; and the step S200 of controlling the target low-frequency antenna to cyclically send the first field intensity carrier comprises:

[0068] The preset low-frequency antenna and the first low-frequency antenna are controlled to cyclically transmit the first field strength carrier, or the preset low-frequency antenna and the fourth low-frequency antenna are controlled to cyclically transmit the first field strength carrier; wherein the preset low-frequency antenna is the second low-frequency antenna or the third low-frequency antenna.

[0069] Specifically, in the present application, in order to shorten the time of finding the key in each round, only the target low-frequency antenna is controlled to cyclically transmit the first field strength carrier. Therefore, the selection of the target low-frequency antenna is particularly important.

[0070] In actual application, the off-vehicle locking function needs to be executed only after the person in the vehicle leaves the vehicle and closes the door. When the person in the vehicle leaves the vehicle, there are two possible situations: the first situation is that the person leaves the vehicle from the main driver side, and after leaving the vehicle, the person may pass near the vehicle head and then move away from the vehicle, or the person may pass near the vehicle tail and then move away from the vehicle; the second situation is that the person leaves the vehicle from the co-driver side, and after leaving the vehicle, the person may pass near the vehicle head and then move away from the vehicle, or the person may pass near the vehicle tail and then move away from the vehicle.

[0071] Based on this, in the selection of the target antenna, there are four situations for the selection of the target antenna:

[0072] The first situation is that the second low-frequency antenna and the first low-frequency antenna (i.e. the main driver side antenna and the vehicle head side antenna), which corresponds to the situation that the person in the vehicle leaves the vehicle from the main driver side, and after leaving the vehicle, the person passes near the vehicle head and then moves away from the vehicle;

[0073] The second situation is that the second low-frequency antenna and the fourth low-frequency antenna (i.e. the main driver side antenna and the vehicle tail side antenna), which corresponds to the situation that the person in the vehicle leaves the vehicle from the main driver side, and after leaving the vehicle, the person passes near the vehicle tail and then moves away from the vehicle;

[0074] The third situation is that the third low-frequency antenna and the first low-frequency antenna (i.e. the co-driver side antenna and the vehicle head side antenna), which corresponds to the situation that the person in the vehicle leaves the vehicle from the co-driver side, and after leaving the vehicle, the person passes near the vehicle head and then moves away from the vehicle;

[0075] The fourth situation is that the third low-frequency antenna and the fourth low-frequency antenna (i.e. the co-driver side antenna and the vehicle tail side antenna), which corresponds to the situation that the person in the vehicle leaves the vehicle from the co-driver side, and after leaving the vehicle, the person passes near the vehicle tail and then moves away from the vehicle.

[0076] The four selection modes of the target low-frequency antenna cover all possible situations when the person in the vehicle leaves the vehicle. Controlling the four target low-frequency antennas to transmit the first field strength carrier can ensure that the coverage range of the first field strength carrier can cover all possible situations when the person in the vehicle leaves the vehicle, thereby greatly improving the possibility of the key controller receiving the first field strength carrier, and also greatly improving the possibility of the vehicle body controller receiving the first feedback information, thereby greatly improving the possibility of finding the key, so that the vehicle body controller can timely and accurately control the vehicle to automatically lock.

[0077] In a specific implementation, which low-frequency antenna is selected as the target low-frequency antenna can be determined in combination with the in-vehicle image and the vehicle door state change information. Specifically, when the in-vehicle image shows that the last person in the vehicle is opening a vehicle door at a certain moment, and the vehicle door state change information shows that the state of the vehicle door changes from opening to closing, the low-frequency antenna corresponding to the vehicle door is determined as the target low-frequency antenna at this moment. Then, in combination with the out-of-vehicle image, it is determined whether the person is near the front of the vehicle or near the rear of the vehicle, and then the low-frequency antenna on the determined front or rear of the vehicle is determined as the target low-frequency antenna.

[0078] For example, when the in-vehicle image shows that the last person in the vehicle is opening the co-driver door at a certain moment, and the co-driver door state change information shows that the state of the co-driver door changes from opening to closing, the low-frequency antenna corresponding to the co-driver door, i.e., the third low-frequency antenna, is determined as the target low-frequency antenna at this moment. Then, in combination with the out-of-vehicle image, it is determined whether the person is near the front of the vehicle, and the low-frequency antenna on the determined front of the vehicle, i.e., the first low-frequency antenna, is determined as the target low-frequency antenna. Thus, the finally determined target low-frequency antenna is the third low-frequency antenna and the first low-frequency antenna.

[0079] When the target low-frequency antenna is controlled to send the first field strength carrier, the first field strength carrier can be sent sequentially, which can increase the probability of finding the key and reduce the number of transmissions. Alternatively, the first field strength carrier can be sent simultaneously, which can reduce the transmission time of each round but increase the power consumption. In actual use, the selection can be made according to the actual situation.

[0080] In this application, the target low-frequency antenna is determined in combination with the actual situation, and then the target low-frequency antenna is controlled to send the first field strength carrier. This can reduce the number of low-frequency antennas sending the first field strength carrier and shorten the time of each round of finding the key, greatly improving the possibility of the key controller receiving the first field strength carrier and the possibility of the vehicle body controller receiving the first feedback information, and further greatly improving the possibility of finding the key, so that the vehicle body controller can timely and accurately control the vehicle to automatically lock.

[0081] In some embodiments, the control of the preset low-frequency antenna and the first low-frequency antenna to cyclically send the first field strength carrier comprises:

[0082] The following steps are cyclically executed with a preset time as a cycle interval:

[0083] The preset low-frequency antenna is controlled to send the first field strength carrier, and after a preset time interval, the first low-frequency antenna is controlled to send the first field strength carrier.

[0084] Or the preset low-frequency antenna and the first low-frequency antenna are controlled to send the first field strength carrier simultaneously.

[0085] Specifically, the preset time is a preset time interval, and the preset time is greater than or equal to a time for the key controller to feed back the first feedback information after receiving the first field strength carrier. For example, the time for the key controller to feed back the first feedback information after receiving the first field strength carrier is 140 ms, and then the preset time is greater than or equal to 140 ms. For example, the preset time can be 140 ms, 145 ms, 150 ms, or the like.

[0086] When the preset low-frequency antenna and the first low-frequency antenna are controlled to cyclically send the first field strength carrier, there are two ways:

[0087] The first way is to take the preset time as a cycle interval, and cyclically execute the following steps: control the preset low-frequency antenna to send the first field strength carrier, and then control the first low-frequency antenna to send the first field strength carrier after the preset time interval. For example, taking the preset time of 145 ms as an example, the preset low-frequency antenna is first controlled to send the first field strength carrier, the first low-frequency antenna is then controlled to send the first field strength carrier after 145 ms, the preset low-frequency antenna is then controlled to send the first field strength carrier after 145 ms, and the first low-frequency antenna is then controlled to send the first field strength carrier after 145 ms, and so on, until the first feedback information is received.

[0088] In this control mode, after the preset low-frequency antenna is controlled to send the first field strength carrier, if the first feedback information is not received within the preset time interval, the first low-frequency antenna is then controlled to send the first field strength carrier, and so on, until the first feedback information is received. If the first feedback information is received, the first low-frequency antenna does not need to be controlled to send the first field strength carrier, and thus the number of times of sending the first field strength carrier by the low-frequency antenna can be reduced, and the power consumption can be reduced.

[0089] The second way is to take the preset time as a cycle interval, and cyclically execute the following steps: control the preset low-frequency antenna and the first low-frequency antenna to simultaneously send the first field strength carrier. For example, taking the preset time of 145 ms as an example, the preset low-frequency antenna and the first low-frequency antenna are controlled to simultaneously send the first field strength carrier, and then the preset low-frequency antenna and the first low-frequency antenna are controlled to simultaneously send the first field strength carrier again after 145 ms, and so on, until the first feedback information is received.

[0090] In this control mode, the time for finding the key in each round can be reduced, and the success rate of finding the key can be further increased, but a large amount of power is consumed, and this control mode is suitable for quickly finding the key in a short time.

[0091] In this application, the preset low-frequency antenna and the first low-frequency antenna are controlled to cyclically send the first field strength carrier in different ways, so that the time for finding the key is shortened, the success rate of finding the key is improved, and the application scenarios are better adapted.

[0092] In some embodiments, the determining whether the initial key position can be determined comprises:

[0093] controlling the plurality of low-frequency antennas to sequentially execute a key search strategy, the key search strategy comprising controlling a low-frequency antenna to send initial authentication information and controlling other low-frequency antennas to send initial field strength carriers;

[0094] in response to receiving the initial feedback information, determining whether the initial feedback information is valid;

[0095] in response to the initial feedback information being valid, determining that the initial key position can be determined;

[0096] in response to the initial feedback information being invalid, determining that the initial key position cannot be determined.

[0097] Specifically, when determining whether the initial key position can be determined, the plurality of low-frequency antennas are controlled to sequentially execute a key search strategy, the key search strategy comprising controlling a low-frequency antenna to send initial authentication information and controlling other low-frequency antennas to send initial field strength carriers. The order of controlling the plurality of low-frequency antennas can be the second low-frequency antenna, the third low-frequency antenna, the first low-frequency antenna, and the fourth low-frequency antenna. When the four antennas all execute the key search strategy once, the execution of the strategy is stopped.

[0098] In the process of the body controller executing the key search strategy, if the key controller does not receive at least one initial authentication information and at least one initial field strength carrier, the key controller cannot feed back the initial feedback information, and the body controller cannot receive the initial feedback information, indicating that the initial key position cannot be determined at this time, indicating that the key search strategy is invalid at this time, and a new key search strategy needs to be replaced in order to improve the accuracy and sensitivity of the key search.

[0099] In the process of the body controller executing the key search strategy, if the key controller receives at least one initial authentication information and at least one initial field strength carrier, the key controller generates initial feedback information based on the initial authentication information and the initial field strength carrier and sends it to the body controller.

[0100] When the body controller receives the initial feedback information, it is determined whether the initial feedback information is valid. When the initial feedback information is valid, it is determined that the initial key position can be determined, indicating that the key search strategy is valid at this time and can continue to be executed without replacing the search strategy. When the initial feedback information is invalid, it is determined that the initial key position cannot be determined, indicating that the key search strategy is invalid at this time and a new key search strategy needs to be replaced in order to improve the accuracy and sensitivity of the key search.

[0101] In the present application, whether the initial key position can be determined is judged by whether the initial feedback information is received and whether the initial feedback information is valid, and different subsequent execution strategies are determined based on whether the initial key position can be determined, so as to timely adjust the key searching strategy and improve the accuracy and sensitivity of key searching.

[0102] In some embodiments, the judging whether the initial feedback information is valid comprises:

[0103] decrypting the initial feedback information to obtain decrypted initial information;

[0104] based on the decrypted initial information, obtaining a plurality of initial field strength values, the plurality of initial field strength values corresponding to the plurality of initial field strength carriers one by one;

[0105] in response to one of the initial field strength values being a preset invalid value, it is determined that the initial feedback information is invalid.

[0106] Specifically, after the key controller receives at least one initial authentication information and at least one initial field strength carrier, the key controller generates feedback information based on the initial authentication information, the feedback information can be a preset information, generates a corresponding initial field strength value based on each initial field strength carrier, and then packages and encrypts the feedback information and all initial field strength values to generate initial feedback information and sends it to the body controller.

[0107] After the body controller receives the initial feedback information, the initial feedback information is decrypted to obtain decrypted initial information, and a plurality of initial field strength values are determined based on the decrypted initial information, the plurality of initial field strength values corresponding to the plurality of initial field strength carriers one by one.

[0108] When at least one of the plurality of initial field strength values is a preset invalid value, it is determined that the initial feedback information is invalid, that is, the initial key position cannot be determined based on the initial feedback information.

[0109] The preset invalid value is a preset invalid numerical value, for example, the preset invalid value is 0 or a negative number.

[0110] Generally, the initial field strength value in the initial feedback information returned by the key controller is a number greater than 0, and the body controller can calculate the specific position of the key based on the four initial field strength values corresponding to the four low-frequency antennas. However, during the process of returning the initial feedback information by the body controller, the returned initial field strength value may be 0 or negative due to the influence of space electromagnetic interference or other signals, which causes the body controller to be unable to calculate the key position based on the initial field strength value. Therefore, when at least one of the multiple initial field strength values is a preset invalid value, it is determined that the initial feedback information is invalid, i.e., the initial key position cannot be determined based on the initial feedback information.

[0111] In this application, based on the judgment of the effectiveness of the initial feedback information, it is determined that the initial feedback information is effective, and based on the effective or invalid initial feedback information, it is judged whether the initial key position can be determined, and then different operations are performed subsequently, so as to timely adjust the key searching strategy and improve the accuracy and sensitivity of key searching.

[0112] In some embodiments, the control of the vehicle automatic locking based on the first feedback information comprises:

[0113] controlling all low-frequency antennas to cyclically send second field strength carriers;

[0114] in response to receiving the second feedback information, controlling the vehicle automatic locking based on the second feedback information.

[0115] Specifically, although the first feedback information is received to determine that there is a key around the vehicle, the specific position of the key cannot be determined, because the specific position of the key must be calculated by the field strength values corresponding to the four low-frequency antennas, and the first feedback information only contains the field strength value corresponding to the target low-frequency antenna, so the specific position of the key cannot be calculated. If the specific position of the key cannot be determined, the position change of the key cannot be continuously monitored, and the vehicle automatic locking cannot be timely controlled.

[0116] Therefore, after receiving the first feedback information, all low-frequency antennas are controlled to cyclically send second field strength carriers, and after receiving the second feedback information, the vehicle automatic locking is controlled based on the second feedback information.

[0117] Specifically, first, it is judged whether the second feedback information is valid. After the body controller receives the second feedback information, the second feedback information is decrypted to obtain decrypted second information, and based on the decrypted second information, multiple second field strength values are determined, which correspond one-to-one to the multiple second field strength carriers.

[0118] When at least one of the second field strength values is a preset invalid value, the second feedback information is determined to be invalid. When none of the second field strength values is the preset invalid value, the second feedback information is determined to be valid.

[0119] When the second feedback information is determined to be valid, the position of the key fob is determined based on the second feedback information.

[0120] Specifically, the position of the key fob is determined based on the second field strength values in the second feedback information and a preset field strength rule. The preset field strength rule is a relationship between the first low-frequency antenna to the fourth low-frequency antenna and the position of the key fob stored by the body controller itself.

[0121] The body controller obtains the second field strength values of the low-frequency antennas based on the second feedback information, and matches the second field strength values with the preset field strength rule, so as to determine the current position of the key fob.

[0122] When the position of the key fob is located outside the preset area, it indicates that the key fob has left the unlocking area and entered the locking area, and the vehicle is controlled to be automatically locked. The preset area is a preset unlocking area, and when the key fob is located in the unlocking area, the vehicle cannot be controlled to be automatically locked; when the key fob is located outside the unlocking area, i.e., in the locking area, the vehicle can be controlled to be automatically locked.

[0123] When the position of the key fob is located in the preset area, it indicates that the key fob is located in the unlocking area, and the user has not left the unlocking area, so the position of the key fob needs to be continuously monitored until the key fob enters the locking area. Therefore, the all low-frequency antennas are continuously controlled to cyclically transmit the second field strength carrier, receive the second feedback information, and determine the position of the key fob based on the second feedback information, until the determined position of the key fob is located outside the preset area, which indicates that the key fob has entered the locking area from the unlocking area, and the vehicle can be controlled to be automatically locked.

[0124] Alternatively, during the process of continuously controlling the all low-frequency antennas to cyclically transmit the second field strength carrier, the number of times of cyclic execution has reached a preset number of times, but the second feedback information has not been received, which indicates that the user has left the unlocking area far away, resulting in that the key fob cannot receive the second field strength carrier, so as to fail to feedback the second feedback information. At this time, the vehicle can be controlled to be automatically locked.

[0125] Or, in the process of continuing to control all low-frequency antennas to cyclically transmit the second field strength carrier, the number of cyclically executed times has reached the preset number, but the received second feedback information is all invalid, indicating that the key controller may be unable to receive an effective second field strength carrier or unable to generate an effective second field strength value due to the influence of spatial electromagnetic interference, signal interference, or distance factors, resulting in invalid second feedback information. However, at this time, the number of cyclically executed times has reached the preset number, and continuing to transmit the second field strength carrier is meaningless and will only consume excessive power. Therefore, at this time, the vehicle can be automatically locked.

[0126] The preset number is the preset number of times of cyclically transmitting the second field strength carrier. Under normal circumstances, when the number of cycles reaches the preset number and no valid second feedback information is received, it is almost impossible to receive valid second feedback information even if the cycle continues. Illustratively, the preset number is 10 or 12.

[0127] In this application, the second feedback information is judged to determine whether the second feedback information can be used to determine the position of the key. Based on the determined position of the key, it is determined whether the vehicle can be automatically locked. In this way, the change of the position of the key can be accurately determined, and the vehicle can be automatically locked in a timely and accurate manner.

[0128] In some embodiments, the method of controlling the vehicle to be automatically locked can further include the following steps:

[0129] 1. After the vehicle door is closed, the door state change is detected, the vehicle body controller triggers the vehicle low-frequency antenna to sequentially transmit low-frequency data (i.e., initial authentication information), and the low-frequency data is transmitted in the order of main driver + co-driver + front guard + rear guard. When one of the low-frequency antennas transmits low-frequency data, all low-frequency antennas sequentially transmit a carrier (i.e., an initial field strength carrier).

[0130] 2. After the key end receives the low-frequency data, it returns high-frequency data (i.e., initial feedback information) to the vehicle body controller.

[0131] 3. The vehicle body controller calculates the current key position based on the received high-frequency data.

[0132] 4. If the specific position of the key is calculated, the carrier transmission sequence is fixed as main driver + co-driver + front guard + rear guard in sequence.

[0133] 5. If the specific position of the key is not calculated, only two antennas are used to transmit carrier data (i.e., a first field strength carrier) to shorten the data transmission time. (Note: Two antennas transmitting a carrier cannot calculate the specific position of the key, but can still trigger the key to reply to high-frequency).

[0134] 6. If the key end receives the carrier data, high frequency data (i.e. the first feedback information) is returned, and the body controller receives the high frequency data, and then considers that there is a legal key around the vehicle, at this time, the record lock flag is recorded, but the specific key position cannot be calculated.

[0135] 7. After the record lock flag is recorded, the low frequency antenna carrier transmission mode is switched to the sequence of main driver + co-driver + front protection + rear protection for transmission (i.e. the second field strength carrier is transmitted in sequence), at this time, the specific key position information is calculated according to the high frequency data (i.e. the second feedback information) returned by the key. If the specific key position (the position of the key is 0) cannot be calculated for 8s continuously, the vehicle is locked.

[0136] This scheme can determine whether the key position can be calculated according to the reply information of the key end, and decide whether to switch the transmission mode of the carrier according to whether the key position can be calculated, so as to quickly and accurately detect the change of the key and the key position, and further timely and accurately control the vehicle to be automatically locked.

[0137] It should be noted that the method of the embodiments of the present application can be executed by a single device, such as a computer or a server, etc. The method of the embodiments can also be applied to a distributed scenario, and be completed by multiple devices cooperating with each other. In this distributed scenario, one of the multiple devices can only execute one or more steps in the method of the embodiments of the present application, and the multiple devices can interact with each other to complete the method.

[0138] It should be noted that some embodiments of the present application have been described above. Other embodiments are within the scope of the appended claims. In some cases, the actions or steps recited in the claims can be performed in a different order than the order described above and still achieve desirable results. Additionally, the processes depicted in the figures do not necessarily require the particular order shown, or sequential order to achieve the desired results. In certain implementations, multitasking and parallel processing can be advantageous.

[0139] Based on the same inventive concept, corresponding to any of the above-mentioned embodiment methods, the present application also provides a device for controlling vehicle automatic locking. The device is executed based on a keyless entry and start system, and the keyless entry and start system includes a plurality of low frequency antennas.

[0140] Reference Figure 4 The device for controlling vehicle automatic locking includes:

[0141] The judgment module is configured to determine whether the initial key position can be determined in response to the key search function being awakened.

[0142] a control module configured to control the target low-frequency antenna to cyclically transmit the first field strength carrier in response to being unable to determine the initial key position, the target low-frequency antenna being two of the plurality of low-frequency antennas;

[0143] an execution module configured to control the vehicle to automatically lock in response to receiving the first feedback information.

[0144] In some embodiments, the plurality of low-frequency antennas includes a first low-frequency antenna disposed in the vehicle, a second low-frequency antenna and a third low-frequency antenna each disposed on a side of the vehicle body, and a fourth low-frequency antenna disposed at the rear of the vehicle.

[0145] In some embodiments, the control module is further configured to:

[0146] control the preset low-frequency antenna and the first low-frequency antenna to cyclically transmit the first field strength carrier, or control the preset low-frequency antenna and the fourth low-frequency antenna to cyclically transmit the first field strength carrier; wherein the preset low-frequency antenna is the second low-frequency antenna or the third low-frequency antenna.

[0147] In some embodiments, the control module is further configured to:

[0148] cyclically execute the following steps with a preset time as a cycle interval:

[0149] control the preset low-frequency antenna to transmit the first field strength carrier, and control the first low-frequency antenna to transmit the first field strength carrier after a preset time interval;

[0150] or control the preset low-frequency antenna and the first low-frequency antenna to simultaneously transmit the first field strength carrier.

[0151] In some embodiments, the judgment module is further configured to:

[0152] control the plurality of low-frequency antennas to sequentially execute a key search strategy, the key search strategy including controlling a low-frequency antenna to transmit initial authentication information, and controlling other low-frequency antennas to each transmit initial field strength carrier;

[0153] in response to receiving initial feedback information, judge whether the initial feedback information is valid;

[0154] in response to the initial feedback information being valid, determine that the initial key position can be determined;

[0155] in response to the initial feedback information being invalid, determine that the initial key position cannot be determined.

[0156] In some embodiments, the judgment module is further configured to:

[0157] decrypt the initial feedback information to obtain decrypted initial information;

[0158] Determine a plurality of initial field strength values based on the decrypted initial information, wherein each of the plurality of initial field strength values corresponds to one of the plurality of initial field strength carriers;

[0159] In response to at least one of the initial field strength values being a preset invalid value, determine that the initial feedback information is invalid.

[0160] In some embodiments, the execution module is further configured to:

[0161] Control all low-frequency antennas to cyclically transmit the second field strength carrier;

[0162] In response to receiving the second feedback information, control the vehicle to be automatically locked based on the second feedback information.

[0163] In some embodiments, the execution module is further configured to:

[0164] In response to the second feedback information being valid, determine the vehicle key position based on the second feedback information.

[0165] In response to the vehicle key position being outside a preset area, control the vehicle to be automatically locked.

[0166] In some embodiments, the execution module is further configured to:

[0167] In response to the vehicle key position being inside the preset area, continue to control all low-frequency antennas to cyclically transmit the second field strength carrier, receive the second feedback information, and determine the vehicle key position based on the second feedback information, until the determined vehicle key position is outside the preset area, and the vehicle is controlled to be automatically locked.

[0168] Or in response to the vehicle key position being inside the preset area, continue to control all low-frequency antennas to cyclically transmit the second field strength carrier, until the number of times of cyclic execution reaches a preset number of times, and no second feedback information is received or the received second feedback information is invalid, and the vehicle is controlled to be automatically locked.

[0169] For the convenience of description, the above device is described as various modules respectively described in terms of functions. Of course, in the implementation of the present application, the functions of each module can be implemented in one or more software and / or hardware.

[0170] The device of the above embodiments is used to implement the method of controlling the vehicle to be automatically locked in any of the above embodiments, and has the beneficial effects of the corresponding method embodiments, which are not described here again.

[0171] Based on the same inventive concept, the application also provides an electronic device corresponding to the method of any of the above embodiments, comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor executes the program to implement the method of any of the above embodiments.

[0172] Figure 5 A more specific hardware structure of an electronic device is shown, which can include a processor 1010, a memory 1020, an input / output interface 1030, a communication interface 1040, and a bus 1050. The processor 1010, the memory 1020, the input / output interface 1030, and the communication interface 1040 are connected to each other through the bus 1050 for internal communication.

[0173] The processor 1010 can be implemented by a general-purpose CPU (Central Processing Unit), a microprocessor, an ASIC (Application Specific Integrated Circuit), or one or more integrated circuits, etc., for executing related programs to implement the technical solutions provided by the embodiments of the present specification.

[0174] The memory 1020 can be implemented by a ROM (Read Only Memory), a RAM (Random Access Memory), a static storage device, a dynamic storage device, etc. The memory 1020 can store an operating system and other application programs, and when the technical solutions provided by the embodiments of the present specification are implemented by software or firmware, the related program codes are stored in the memory 1020 and executed by the processor 1010.

[0175] The input / output interface 1030 is used to connect input / output modules to realize information input and output. The input / output modules can be configured as components in the device (not shown in the figure) or externally connected to the device to provide corresponding functions. The input device can include a keyboard, a mouse, a touch screen, a microphone, various sensors, etc., and the output device can include a display, a speaker, a vibrator, an indicator light, etc.

[0176] The communication interface 1040 is used to connect a communication module (not shown in the figure) to realize the communication interaction between the device and other devices. The communication module can realize communication through wired means (such as USB, network cable, etc.) or through wireless means (such as mobile network, WIFI, Bluetooth, etc.).

[0177] Bus 1050 includes a path for transferring information between the various components (e.g., processor 1010, memory 1020, input / output interface 1030, and communication interface 1040) of the device.

[0178] It should be noted that although the above device only shows the processor 1010, the memory 1020, the input / output interface 1030, the communication interface 1040 and the bus 1050, in the specific implementation process, the device can also include other components necessary for normal operation. In addition, those skilled in the art can understand that the above device can also only contain the components necessary to implement the embodiments of the present application, and does not necessarily contain all the components shown in the figure.

[0179] The electronic device of the above embodiment is used to implement the method of controlling the automatic locking of the vehicle in any of the above embodiments, and has the beneficial effects of the corresponding method embodiments, which are not repeated here.

[0180] Based on the same inventive concept, the present application also provides a non-transitory computer readable storage medium, which stores computer instructions for causing the computer to execute the method of controlling the automatic locking of the vehicle as described in any of the above embodiments.

[0181] The computer readable medium of the present embodiment includes permanent and non-permanent, removable and non-removable media, which can be realized by any method or technology to store information. The information can be computer readable instructions, data structures, program modules or other data. Examples of computer storage media include, but are not limited to, phase change memory (PRAM), static random access memory (SRAM), dynamic random access memory (DRAM), other types of random access memory (RAM), read-only memory (ROM), electrically erasable programmable read-only memory (EEPROM), flash memory or other memory technology, compact disc read-only memory (CD-ROM), digital versatile disc (DVD) or other optical storage, magnetic cassette, magnetic tape disk storage or other magnetic storage device, or any other non-transmission medium that can be used to store information accessible by a computing device.

[0182] The computer instructions stored in the storage medium of the above embodiment are used to cause the computer to execute the method of controlling the automatic locking of the vehicle as described in any of the above embodiments, and have the beneficial effects of the corresponding method embodiments, which are not repeated here.

[0183] Based on the same inventive concept, the application also provides a computer program product corresponding to the method of any of the above embodiments, comprising computer program instructions, which, when executed on a computer, cause the computer to perform the method of controlling automatic locking of a vehicle according to any of the above embodiments, and have the beneficial effects of the corresponding method embodiments, which will not be repeated here.

[0184] Based on the same inventive concept, the application also provides a vehicle, comprising the device, the electronic device, the storage medium or the computer program product corresponding to any of the above embodiments. The vehicle has the beneficial effects of the corresponding method embodiments, which will not be repeated here.

[0185] It can be understood that, before using the technical solutions of various embodiments of the present disclosure, the type, use range, use scenario, etc. of the personal information involved will be informed to the user in a proper manner, and the authorization of the user will be obtained.

[0186] For example, in response to receiving the active request of the user, prompt information is sent to the user to explicitly prompt the user that the operation requested to be performed will require obtaining and using the personal information of the user. Thus, the user can voluntarily choose whether to provide the personal information to the software or hardware such as the electronic device, the application program, the server or the storage medium performing the technical solutions of the present disclosure according to the prompt information.

[0187] As an optional but not limited implementation manner, in response to accepting the active request of the user, the manner of sending the prompt information to the user may, for example, be a pop-up window manner, and the prompt information may be presented in the form of text in the pop-up window. In addition, the pop-up window may also carry selection controls for the user to select "agree" or "disagree" to provide the personal information to the electronic device.

[0188] It can be understood that the above notification and obtaining of the authorization of the user are only illustrative, and do not limit the implementation manners of the present disclosure, and other manners meeting the relevant laws and regulations can also be applied to the implementation manners of the present disclosure.

[0189] Those skilled in the art will understand that the above discussion of any of the embodiments is only exemplary and is not intended to imply that the scope (including the claims) of the present application is limited to these examples; under the idea of the present application, the above embodiments or technical features in different embodiments can also be combined, the steps can be implemented in any order, and there are many other changes of different aspects of the embodiments of the present application as described above, which are not provided in detail for the sake of brevity.

[0190] Additionally, to simplify the description and discussion, and so as not to obscure the embodiments of the application being presented, the well-known functions or constructions of integrated circuit (IC) chips and other components can or can not be shown in the figures and will be omitted as not to unnecessarily obscure the embodiments of the application being presented. Moreover, the apparatus can be shown in block diagram form in order to avoid obscuring the embodiments of the application, and this also acknowledges the fact that the details in regards to the implementation of such block diagram apparatus are highly dependent on the platform within which the application is being implemented (i.e., such details should be well within the purview of one of ordinary skill in the art to implement). Where specific details are set forth in order to describe an illustrative embodiment of the application, it will be apparent to one of ordinary skill in the art that the application can be practiced without, or with variations of, these specific details. Thus, the description is to be considered as illustrative and not restrictive, and the scope of the application should be determined not with reference to the above description, but should be given to the appended claims.

[0191] While the application has been described in connection with specific embodiments thereof, many alternatives, modifications and variations will be apparent to those skilled in the art in light of the foregoing description. For example, other memory architectures (e.g., dynamic RAM (DRAM)) can use the embodiments discussed.

[0192] Embodiments of the application are intended to cover all such alternatives, modifications and variations as falling within the scope of the appended claims. Accordingly, any omission, modification, equivalent replacement, improvement, etc. made in the spirit and principle of the embodiments of the application should be included in the scope of protection of the application.

Claims

1. A method of controlling automatic locking of a vehicle, characterized by, The method is performed based on a keyless entry and start system including a plurality of low-frequency antennas, and the method comprises: In response to the key search function being woken up, it is determined whether the initial key position can be determined, and the determination whether the initial key position can be determined comprises: controlling the plurality of low-frequency antennas to sequentially perform a key search strategy, the key search strategy comprising controlling a low-frequency antenna to send initial authentication information and controlling all low-frequency antennas to send initial field strength carriers; in response to receiving initial feedback information, it is determined whether the initial feedback information is valid, wherein the initial feedback information is generated and sent by the key controller based on the initial authentication information and the initial field strength carriers; in response to the initial feedback information being valid, it is determined that the initial key position can be determined; in response to the initial feedback information being invalid, it is determined that the initial key position cannot be determined; In response to the initial key position not being able to be determined, a target low-frequency antenna is controlled to cyclically send a first field strength carrier, the target low-frequency antenna being two of the plurality of low-frequency antennas; In response to receiving first feedback information, the vehicle is automatically locked based on the first feedback information, wherein the first feedback information is generated and sent by the key controller based on the first field strength carrier. The plurality of low-frequency antennas comprises a first low-frequency antenna arranged in the vehicle, a second low-frequency antenna and a third low-frequency antenna arranged on the two sides of the vehicle body respectively, and a fourth low-frequency antenna arranged at the rear of the vehicle.

2. The method of claim 1, wherein, The control of the target low-frequency antenna to cyclically send the first field strength carrier comprises: The control of the preset low-frequency antenna and the first low-frequency antenna to cyclically send the first field strength carrier, or the control of the preset low-frequency antenna and the fourth low-frequency antenna to cyclically send the first field strength carrier; wherein the preset low-frequency antenna is the second low-frequency antenna or the third low-frequency antenna. The control of the preset low-frequency antenna and the first low-frequency antenna to cyclically send the first field strength carrier comprises:

3. The method of claim 2, wherein, The following steps are cyclically performed with a preset time as a cycle interval: The preset low-frequency antenna is controlled to send the first field strength carrier, and after a preset time interval, the first low-frequency antenna is controlled to send the first field strength carrier; Or the preset low-frequency antenna and the first low-frequency antenna are controlled to send the first field strength carrier at the same time. The determination of whether the initial feedback information is valid comprises:

4. The method of claim 1, wherein, The initial feedback information is decrypted to obtain decrypted initial information; Based on the decrypted initial information, a plurality of initial field strength values are determined, and the plurality of initial field strength values correspond one-to-one to the plurality of initial field strength carriers; In response to at least one of the initial field strength values being a preset invalid value, it is determined that the initial feedback information is invalid. The control of the vehicle to be automatically locked based on the second feedback information comprises:

5. The method of claim 1, wherein, In response to the second feedback information being valid, the position of the vehicle key is determined based on the second feedback information; In response to the position of the vehicle key being located outside a preset area, the vehicle is automatically locked. ​ 6. The method of claim 5, wherein, The controlling vehicle automatic locking based on the second feedback information further comprises: In response to the vehicle key position being located in the preset area, the second field strength carrier is continuously transmitted by all the low frequency antennas, the second feedback information is received, and the vehicle key position is determined based on the second feedback information until the determined vehicle key position is located outside the preset area, and the vehicle is automatically locked; Or in response to the vehicle key position being located in the preset area, the second field strength carrier is continuously transmitted by all the low frequency antennas until the number of times of the cyclic execution reaches the preset number of times, and no second feedback information is received or the received second feedback information is invalid, and then the vehicle is automatically locked.

7. An electronic device comprising a memory, a processor, and a computer program stored on the memory and running on the processor, characterized in that, The processor executes the program to implement the method of any one of claims 1 to 6.

8. A vehicle characterized by comprising: The electronic device of claim 7 is included.

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