Vehicle control method, device and vehicle

Abstract

The application provides a vehicle control method and device and a vehicle, and applies to the technical field of intelligent control of vehicles. The method comprises the following steps: in response to receiving a power-on request, detecting whether the low-frequency antenna module is available; based on the detection result of the low-frequency antenna module, positioning the intelligent key by using the low-frequency antenna module and / or the bidirectional communication positioning module; and in response to determining that the intelligent key is inside the vehicle through positioning, controlling the vehicle to power on. The application ensures that the vehicle can still normally perform intelligent key positioning and power-on operation even in the case of low-frequency module failure, thereby guaranteeing user experience and reliability of vehicle use. Since the bidirectional communication positioning module can take over the positioning task in the case that the low-frequency antenna module is unavailable, the IMMO antenna does not need to participate in positioning, so that the positioning function is ensured to be realized while the cost is optimized.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of vehicle intelligent control, and in particular to a vehicle control method and device and vehicle. BACKGROUND

[0002] The traditional PEPS (Passive Entry Passive Start) system, i.e. a passive entry passive start system without a smart key, realizes accurate positioning and interaction with a physical smart key based on a high-low frequency bidirectional communication mechanism. However, with the continuous development of automobile technology and the intensification of market competition, the traditional PEPS system has gradually exposed some limitations. For example, in order to save costs, the IMMO (Immobilizer, immobilizer control unit) antenna function originally independent of the low-frequency antenna is multiplexed in some solutions. Although this can meet the vehicle's needs for passive entry and start without a smart key and reduce hardware costs, when the low-frequency antenna fails, the vehicle cannot position the smart key through the low-frequency signal, resulting in the failure of the emergency power-on function. SUMMARY

[0003] In view of this, the purpose of the present application is to provide a vehicle control method, device and vehicle to realize positioning of a smart key while some hardware is malfunctioning, thereby realizing the power-on function of the vehicle.

[0004] To achieve the above purpose, the present application provides a vehicle control method, comprising:

[0005] In response to receiving a power-on request, detecting whether the low-frequency antenna module is available;

[0006] Based on the detection result of the low-frequency antenna module, positioning a smart key using the low-frequency antenna module and / or the bidirectional communication positioning module;

[0007] In response to determining through positioning that the smart key is inside the vehicle, controlling the vehicle to power on.

[0008] Based on the same inventive concept, the present application also provides a vehicle control device, comprising:

[0009] A detection module configured to detect whether the low-frequency antenna module is available in response to receiving a power-on request;

[0010] A positioning module configured to position a smart key using the low-frequency antenna module and / or the bidirectional communication positioning module based on the detection result of the low-frequency antenna module;

[0011] A control module configured to control the vehicle to power on in response to determining through positioning that the smart key is inside the vehicle.

[0012] Based on the same inventive concept, the application also provides an electronic device, comprising a memory, a processor, and a computer program stored in the memory and executable by the processor, wherein the processor implements the method described above when executing the computer program.

[0013] Based on the same inventive concept, the application also provides a vehicle, comprising the vehicle control device described above.

[0014] As can be seen from the above, the vehicle control method, device and vehicle provided by the application, wherein the method comprises: in response to receiving a power-on request, detecting whether the low-frequency antenna module is available; based on the detection result of the low-frequency antenna module, positioning the smart key by using the low-frequency antenna module and / or the bidirectional communication positioning module, thereby providing a redundant design, ensuring the positioning accuracy of the smart key, and in the case of failure of the low-frequency antenna module, still being able to realize positioning of the smart key through the bidirectional communication positioning module; in response to determining through positioning that the smart key is inside the vehicle, controlling the vehicle to power on, without the need for the user to operate the smart key to realize vehicle power-on, which is more convenient, improves the efficiency of vehicle starting, and guarantees user experience and reliability of vehicle use. Since the positioning function loss caused by the failure of the low-frequency antenna module can be avoided, additional equipment is not required to participate in positioning, thereby optimizing the cost while ensuring the realization of the positioning function. BRIEF DESCRIPTION OF DRAWINGS

[0015] In order to more clearly illustrate the technical solutions in the application or related art, the following will briefly introduce the drawings needed to be used in the embodiments or related art descriptions. Obviously, the drawings in the following description are only embodiments of the application, and for those skilled in the art, other drawings can also be obtained without creative labor.

[0016] Figure 1A The flowchart of the vehicle control method of the embodiment of the application;

[0017] Figure 1B The schematic diagram of the vehicle control method of the embodiment of the application;

[0018] Figure 2 The schematic diagram of the vehicle control device of the embodiment of the application;

[0019] Figure 3 The hardware structure schematic diagram of the electronic device provided by the embodiment of the application. DETAILED DESCRIPTION

[0020] In order to make the purpose, technical solutions and advantages of the application more clear, the following will further describe the application in combination with specific embodiments and with reference to the drawings.

[0021] It should be noted that the technical terms or scientific terms used in the embodiments of the present application should be understood as the general meaning understood by the person skilled in the art in the field to which the present application belongs, unless otherwise defined. The terms "first", "second", and similar terms used in the embodiments of the present 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 "connected" or "connected" and similar terms are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. "Up", "down", "left", "right" and the like are only used to represent relative positional relationships, and when the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0022] The traditional PEPS (Passive Entry Passive Start) system, i.e. a passive entry passive start system without a smart key, is a convenient technology widely used in modern vehicles. Its working principle is based on a high-low frequency two-way communication mechanism, which realizes accurate positioning and interaction of the physical smart key. When the user triggers the one-key start switch of the vehicle, the passive entry controller inside the system starts immediately, first driving the low-frequency antenna of the vehicle to emit low-frequency signals to search for the corresponding smart key around. Once the smart key receives the low-frequency signal emitted by the vehicle, it will start its high-frequency reply mechanism and send a high-frequency signal containing identity verification information to the vehicle. After receiving the signal, the vehicle will go through a series of verification and processing procedures to finally realize the start or unlocking of the vehicle, etc. The PEPS technology architecture has gone through three stages: the mechanical smart key stage, which relies on the mechanical matching of the physical smart key and the lock core, has the defects of easy copying and cumbersome operation; the remote control smart key stage, which realizes remote unlocking through 433MHz radio frequency one-way communication, but still needs active key operation; the passive PEPS stage, which uses 125kHz low frequency and 433MHz high frequency two-way communication, realizes smart key non-inductive positioning and vehicle state control. The current mainstream PEPS system is based on a positioning mechanism of low-frequency triggering + high-frequency feedback. When the user triggers the door handle or start button, the low-frequency drive chip on the vehicle activates multiple low-frequency antennas (such as door handles, armrest boxes, trunk boxes, etc.) arranged inside and outside the vehicle, emitting 125kHz signals to wake up the smart key. After receiving the low-frequency signal through the three-dimensional antenna, the smart key replies with a 433MHz high-frequency signal containing RSSI (Received Signal Strength Indicator, received signal strength), and the vehicle controller determines the smart key position (inside / outside the vehicle) through a triangular positioning algorithm, and then controls the unlocking or starting. The traditional PEPS system has certain redundancy mechanism in design to deal with possible abnormal situations such as low battery of the smart key that cannot normally reply high-frequency signals, or failure of the low-frequency drive on the vehicle. For example, when the low-frequency antenna fails to find the smart key, the system will further drive the IMMO (Immobilizer, anti-theft control unit) antenna to search again, so as to ensure that the vehicle can still realize emergency power-on function in special situations, and ensure that the user can normally use the vehicle. The traditional PEPS system has significant advantages in improving the user experience of the vehicle. It eliminates the tedious operations of the user searching for the smart key and plugging in the smart key, realizes true passive entry and start without a smart key, and greatly improves the convenience. At the same time, the high-low frequency two-way communication mechanism ensures the reliability and safety of the system to a certain extent, and can work stably in various scenarios.

[0023] However, with the continuous development of automobile technology and the intensification of market competition, the traditional PEPS system also gradually exposes some limitations. Among them, the more prominent problem is that the balance between cost control and function implementation is challenged. For example, in order to save costs, the original independent IMMO antenna function is multiplexed with the low-frequency antenna in some new schemes, which reduces the hardware cost to a certain extent, but also brings new problems. Although this design can meet the needs of vehicle keyless entry and start in normal conditions, when the low-frequency driving chip fails, the vehicle will not be able to drive the smart key through the traditional low-frequency signal to position and interact, thereby causing the emergency power-on and power-off function to fail. This greatly affects the user experience, especially in the case of vehicle failure requiring emergency start, and may even cause certain safety hazards. Secondly, the traditional PEPS system lacks effective backup communication paths and coping strategies when the low-frequency antenna or low-frequency driving chip fails. Once the low-frequency signal transmission or reception fails, the function implementation of the entire system will be severely affected. For example, when the low-frequency antenna is partially damaged (such as an open or short circuit of a certain antenna), although the system has certain fault detection capabilities and can continue to work by skipping the faulty antenna, this will reduce the accuracy of the smart key positioning and affect the overall performance of the system. When the low-frequency antenna is completely damaged or the low-frequency driving chip is completely disabled, the system cannot position and interact with the smart key through the low-frequency signal, and the emergency power-on and power-off function of the vehicle cannot be guaranteed.

[0024] Based on the above problems, the applicant found that: in response to receiving a power-on request, detecting whether the low-frequency antenna module is available; based on the detection result of the low-frequency antenna module, positioning the smart key using the low-frequency antenna module and / or the bidirectional communication positioning module; in response to determining that the smart key is inside the vehicle through positioning, controlling the vehicle to power on. In the case that the low-frequency antenna module is completely unavailable, the positioning is completely dependent on the bidirectional communication positioning module. Ensuring that even in the case of low-frequency module failure, the vehicle can still normally position the smart key and power on, ensuring user experience and reliability of vehicle use. Combining the low-frequency antenna module and the bidirectional communication positioning module provides multiple positioning paths, enhancing the robustness of the system. In the case of low-frequency antenna module failure, the backup bidirectional communication positioning module can take over the positioning task, avoiding the problem of vehicle failure due to hardware failure.

[0025] The embodiments of the present application are described in detail below with reference to the accompanying drawings.

[0026] The present application provides a vehicle control method, such as Figure 1AAs shown, in some embodiments, the method is executed by a vehicle controller or a data processor set independently of the vehicle controller, and subsequent embodiments are exemplarily illustrated with the data processor. The vehicle comprises a low-frequency antenna module and a bidirectional communication positioning module; the method comprises:

[0027] S101, in response to receiving a power-on request, detecting whether the low-frequency antenna module is available;

[0028] In specific implementation, when a user presses a one-key start button of the vehicle or issues a power-on request through other means, the vehicle receives the power-on request. The power-on request indicates the user's intention to start the vehicle. The low-frequency antenna module is responsible for transmitting low-frequency signals to determine the presence and position of the smart key. Therefore, before starting the vehicle, it is necessary to ensure the normal working state of the low-frequency antenna module. The physical connection state of the low-frequency antenna module can be checked through a self-checking function to ensure that there is no hardware failure such as disconnection or short circuit, and a trial transmission of low-frequency signals can also be performed to verify whether the antenna can normally transmit signals. If the vehicle is equipped with multiple low-frequency antennas, the state of each low-frequency antenna is detected one by one to ensure that at least multiple antennas can work normally, and whether the low-frequency antenna module is available is judged according to the detection result. Detecting whether the low-frequency antenna module is available provides a basic guarantee for the entire vehicle power-on process, ensuring the normal function and safe reliability of the vehicle when starting.

[0029] S102, based on the detection result of the low-frequency antenna module, positioning the smart key by using the low-frequency antenna module and / or the bidirectional communication positioning module;

[0030] In a specific implementation, the smart key is a key capable of realizing keyless entry and keyless start functions through wireless communication technology. The hardware components of the smart key usually include a low-frequency signal receiving module, a key-end bidirectional communication positioning module (capable of realizing bidirectional interactive communication with the bidirectional communication positioning module of the vehicle), a battery, a button, and the like. If the detection result indicates that the low-frequency antenna module is working normally, the low-frequency antenna module and the bidirectional communication positioning module will be continuously used for positioning the smart key. If the detection result shows that the low-frequency antenna module has a fault, i.e., the low-frequency antenna module is unavailable, the positioning and verification of the smart key can be performed only by relying on the bidirectional communication positioning module. Specifically, if the detection result indicates that the low-frequency antenna module is working normally, the low-frequency antenna module usually wakes up the smart key by transmitting a low-frequency signal (such as 125 kHz), and the smart key replies to the vehicle with data containing similar RSSI (received signal strength) through the bidirectional communication positioning module after receiving the signal. These data can be analyzed by a triangulation algorithm to determine the position of the smart key (such as inside or outside the vehicle), and whether to allow the vehicle to be powered on is decided accordingly. If the low-frequency antenna module detects a fault (for example, the low-frequency driving chip is damaged or the low-frequency antenna is open / short-circuited), a backup solution is enabled, i.e., only the bidirectional communication positioning module is used to position the smart key. The bidirectional communication positioning module includes but is not limited to a BLE (Bluetooh Low Energy, Bluetooth Low Energy communication) module, which is taken as an example below for illustration. The smart key will receive a wake-up signal if it is within a specified range, and reply with legal Bluetooth information, so whether the smart key is located inside the vehicle can be determined by the received Bluetooth information. In the prior art, the vehicle usually positions the smart key through the low-frequency antenna and the high-frequency antenna, i.e., the vehicle sends a low-frequency signal to the smart key through the low-frequency antenna, and receives the feedback signal of the smart key through the high-frequency antenna, thereby positioning the smart key. When all the low-frequency antennas are faulty or the smart key has low power and cannot reply to the feedback signal, the smart key cannot be positioned, at which time the smart key can be positioned by the IMMO antenna to realize power-on. However, if all the low-frequency antennas are faulty, the IMMO antenna cannot be used for positioning at this time. However, the bidirectional communication positioning module in the present embodiment provides a redundant design. Under the premise of saving costs (the low-frequency antenna is reused as the IMMO antenna), if the low-frequency antenna module is faulty and unavailable, the vehicle can position the smart key by using the bidirectional communication positioning module, thereby being able to control the vehicle to be powered on. If the low-frequency antenna module is available, more accurate positioning can be realized by jointly using the low-frequency antenna module and the bidirectional communication positioning module, thereby being able to control the vehicle to be powered on and ensuring the normal use of the vehicle.

[0031] S103, in response to determining that the smart key is inside the vehicle through positioning, controlling the vehicle to power on.

[0032] In implementation, after determining that the smart key is inside the vehicle through positioning, the legality of the smart key can be further verified to ensure that the vehicle will not be started by an unauthorized smart key. For example, the smart key will send a data packet containing encrypted identity information when it replies to the vehicle signal. The vehicle confirms whether the smart key is bound to the vehicle by decryption and matching, preventing illegal smart keys or signal interference. After confirming that the smart key is inside the vehicle, the vehicle is controlled to power on in response to the user's power-on request. Vehicle power-on refers to powering the key systems of the vehicle (such as the engine, control unit, electrical equipment, etc.) to make them enter an operable state. After powering on, the position of the smart key can also be continuously monitored, and if the smart key position is detected to be abnormal or the identity verification fails, the vehicle will be locked.

[0033] Figure 1B The schematic diagram of the vehicle control method of the embodiments of the present application is based on Figure 1B Further illustrate the working principle of the vehicle control method of the present application: when the user triggers the one-key start switch, the MCU (Microcontroller Unit; microcontroller unit) in the PEPS controller receives the signal of the one-key start switch, that is, the power-on request. At this time, the MCU detects whether the low-frequency antenna module is available, that is, whether the LF (Low Frequency) drive chip has failed. If the LF drive chip has not failed, the MCU controls the LF drive chip to detect whether each low-frequency antenna has failed, thereby determining whether the low-frequency antenna module is available. If the low-frequency antenna module is available, the LF drive chip transmits low-frequency signals in sequence through multiple low-frequency antennas. After the low-frequency (LF) signal receiving antenna in the smart key receives multiple low-frequency signals, the smart key sends data containing RSSI (Received Signal Strength) to the BLE chip (two-way communication positioning module) in the PEPS controller through the BLE module (two-way communication positioning module). The MCU in the PEPS controller can analyze these data through a triangulation algorithm to determine the position of the smart key. If the smart key is inside the vehicle, the vehicle is controlled to power on. If the MCU detects that the low-frequency antenna module is not available (i.e., the LF drive chip has failed or all low-frequency antennas have failed), the MCU controls the BLE chip (two-way communication positioning module) to transmit a wake-up signal to the BLE module (two-way communication positioning module) in the smart key. If the smart key receives the wake-up signal within a specified range, it replies with legal Bluetooth information. The PEPS controller determines that the smart key is inside the vehicle by receiving the Bluetooth information and controls the vehicle to power on.

[0034] In this embodiment, positioning is completely dependent on the bidirectional communication positioning module when the low-frequency antenna module is completely unavailable. This ensures that the vehicle can still normally perform intelligent key positioning and power-on operations even in the event of a low-frequency module failure, thereby guaranteeing user experience and system reliability. In combination with the low-frequency antenna module and the bidirectional communication positioning module, multiple positioning paths are provided, enhancing the robustness of the system. In the event of a low-frequency antenna module failure, the standby bidirectional communication positioning module can take over the positioning task, avoiding the problem of the vehicle being unable to start due to hardware failure. This not only improves the reliability and safety of the vehicle, but also optimizes the user experience.

[0035] In some embodiments, the low-frequency antenna module includes a plurality of low-frequency antennas; and based on the detection result of the low-frequency antenna module, the intelligent key is positioned using the low-frequency antenna module and / or the bidirectional communication positioning module, including:

[0036] In response to determining that the low-frequency antenna module is available, the intelligent key is positioned using a plurality of low-frequency antennas in the low-frequency antenna module and the bidirectional communication positioning module;

[0037] In specific implementation, the low-frequency antenna module is usually composed of multiple low-frequency antennas, which are distributed in different positions of the vehicle (such as door handles, armrest boxes, trunks, etc.). By arranging multiple low-frequency antennas inside and outside the vehicle, key areas around the vehicle (such as near the vehicle door, inside the cockpit, etc.) can be effectively covered, ensuring that the intelligent key can be detected in different positions. If a low-frequency antenna fails, other antennas can still continue to work, thereby improving reliability. When the detection result indicates that the low-frequency antenna module is available, the multiple low-frequency antennas and the bidirectional communication positioning module are preferentially used to work together to position the intelligent key, ensuring the accuracy and reliability of positioning. Specifically, when the low-frequency antenna module is working normally, the vehicle drives multiple low-frequency antennas (such as door handles, trunks, armrest boxes, etc.) inside and outside the vehicle to poll and transmit low-frequency signals (such as 125 kHz) in sequence. The intelligent key receives the low-frequency signal through the built-in three-dimensional antenna and sends a response signal containing RSSI data to the vehicle through a high-frequency signal (such as 433 MHz, which is usually sent by the bidirectional communication positioning module in the intelligent key, and the bidirectional communication positioning module in the intelligent key can interact with the bidirectional communication positioning module on the vehicle). The vehicle controller calculates the specific position of the intelligent key relative to the vehicle based on the RSSI data received by multiple low-frequency antennas through a triangulation algorithm, determines whether the intelligent key is inside or outside the vehicle, and if the intelligent key is positioned inside the vehicle, further verifies the legitimacy of the intelligent key and allows the vehicle to power on.

[0038] In response to determining that the low-frequency antenna module is unavailable, the intelligent key is positioned using the bidirectional communication positioning module.

[0039] In specific implementation, if the detection result indicates that the low-frequency antenna module is unavailable (e.g., the low-frequency drive chip is damaged or all low-frequency antennas are disabled), the bidirectional communication positioning module is enabled, the vehicle-side Bluetooth low-energy communication module actively transmits a wake-up signal to the smart key, and the signal field strength of the Bluetooth low-energy communication module is limited within a certain range to ensure that the smart key can only receive the signal within the vehicle range. After receiving the wake-up signal, the smart key replies with a reply signal containing identity verification information. The vehicle-side Bluetooth low-energy communication module determines whether the smart key is within the effective range of the vehicle according to the received reply signal. If the smart key is in a legal position and passes the identity verification, the vehicle is allowed to be powered on.

[0040] In this embodiment, by combining multiple low-frequency antennas and bidirectional communication positioning modules, the system has strong fault tolerance, and even if some hardware modules fail, the smart key positioning task can still be completed. The system can automatically select the best positioning method according to the state of the low-frequency antenna module without user intervention, thereby improving the convenience and intelligence level of vehicle use. The combination of low-frequency antenna modules and bidirectional communication positioning modules ensures the accuracy of smart key positioning. In the case where the low-frequency antenna module is unavailable, the bidirectional communication positioning module can take over the positioning task, avoiding the loss of function due to hardware failure, and at the same time, the IMMO antenna is not required for positioning, thereby balancing the cost optimization and function guarantee.

[0041] In some embodiments, the positioning of the smart key using the bidirectional communication positioning module includes:

[0042] The bidirectional communication positioning module transmits a wake-up signal with a preset signal field strength to cover a preset area in the vehicle.

[0043] In specific implementation, the preset signal field strength refers to the power setting of the bidirectional communication positioning module when transmitting the wake-up signal. The preset signal field strength needs to be accurately calculated and adjusted to ensure that the signal can cover the preset area in the vehicle, while avoiding the case where the signal is too strong and the smart key outside the vehicle is mistakenly judged to be inside the vehicle. That is, the preset signal field strength should be sufficient to cover the preset area in the vehicle (e.g., the driver's cabin, the rear seat, etc.) to ensure that the smart key can receive the wake-up signal at any position inside the vehicle, while preventing the smart key or other devices outside the vehicle from receiving the signal, thereby enhancing the security of the vehicle against theft. The bidirectional communication positioning module transmits a wake-up signal with a preset signal field strength, which covers the preset area in the vehicle after propagation. The wake-up signal usually carries a specific identification code or encrypted information to ensure that only the bound smart key can recognize and reply. In some cases, the signal field strength may be dynamically adjusted according to environmental changes (e.g., the number of people inside the vehicle) to optimize the positioning effect.

[0044] In response to determining that the bidirectional communication positioning module receives the reply signal sent by the smart key to the wake-up signal, it is determined that the smart key is inside the vehicle.

[0045] In implementation, the bidirectional communication positioning module captures the reply signal sent by the smart key through its receiving antenna. The reply signal is usually a Bluetooth signal carrying authentication information and signal strength data. The bidirectional communication positioning module decodes the received signal to extract the key information and verifies the legitimacy of the smart key before confirming its location to ensure that the vehicle will not be started by an unauthorized smart key. The smart key usually contains encrypted identity information in the reply signal. The vehicle verifies whether the smart key is bound to the vehicle by decryption and matching. After successfully verifying the legitimacy of the smart key, it is considered that the smart key is inside the vehicle because the bidirectional communication positioning module receives the reply signal sent by the smart key to the wake-up signal, indicating that the smart key can connect the bidirectional communication positioning module of the vehicle, otherwise, it is considered that the smart key is outside the vehicle.

[0046] In this embodiment, the signal field strength is limited to accurately determine whether the smart key is inside the vehicle, avoiding misjudgment. If the signal field strength is too strong, it may cause the smart key outside the vehicle to be misjudged as inside the vehicle, and then trigger the vehicle to start or unlock. The design of the preset signal field strength effectively prevents this situation. Through accurate control of the signal field strength, it can effectively prevent interference from illegal smart keys or devices and improve the safety of the vehicle. Reasonable signal field strength helps to reduce the power consumption of the vehicle and prolong the service life.

[0047] In some embodiments, the positioning of the smart key using the plurality of low-frequency antennas in the low-frequency antenna module and the bidirectional communication positioning module comprises:

[0048] Using the plurality of low-frequency antennas to emit low-frequency signals;

[0049] In implementation, the plurality of low-frequency antennas are arranged at different positions inside and outside the vehicle to ensure comprehensive coverage and accurate positioning of the smart key. The plurality of low-frequency antennas are activated in a predetermined order to emit 125 kHz low-frequency signals in turn. Each low-frequency antenna covers a specific area to better locate the smart key. Low-frequency signals have a short propagation distance and strong penetration ability, making them suitable for short-range smart key wake-up and positioning. The design of multiple antennas provides redundant paths, so that even if one antenna fails, other low-frequency antennas can continue to work, ensuring the reliability of positioning.

[0050] In response to determining that the bidirectional communication positioning module receives the signal strength indication data sent by the smart key to the low-frequency signal, the smart key is positioned according to the signal strength indication data.

[0051] In implementation, the bidirectional communication positioning module (e.g., a Bluetooth Low Energy communication module) is configured to receive and process the signal strength indication data transmitted by the smart key in response to the low frequency signal. The signal strength indication data includes, but is not limited to, the low frequency signal strength of the low frequency signal received by the smart key and the low frequency antenna identifier corresponding to the low frequency signal strength. The low frequency signal strength and the low frequency antenna identifier corresponding to the low frequency signal strength are used to locate the smart key. If the smart key is located in the vehicle, the vehicle is allowed to be powered on to provide power to the engine and electrical equipment.

[0052] In this embodiment, multiple low frequency antennas provide redundant paths to ensure normal operation in the event of individual low frequency antenna failure. The use of multiple low frequency antennas in the low frequency antenna module and the bidirectional communication positioning module to locate the smart key ensures accurate positioning and security verification of the smart key. This not only improves the safety and reliability of the vehicle, but also optimizes the user experience.

[0053] In some embodiments, the signal strength indication data includes the low frequency signal strength of the low frequency signal received by the smart key and the low frequency antenna identifier corresponding to the low frequency signal strength. The locating of the smart key based on the signal strength indication data includes:

[0054] Determining the distance and angle of the smart key relative to each low frequency antenna based on the low frequency signal strength and the low frequency antenna identifier corresponding to the low frequency signal strength.

[0055] In implementation, the signal strength indication data is key data generated by the smart key after receiving the low frequency signal, including the low frequency signal strength, which represents the strength of the low frequency signal received by the smart key. The low frequency signal strength is usually related to the distance between the smart key and the low frequency antenna. The stronger the low frequency signal strength, the closer the distance. The low frequency antenna identifier, which is unique to each low frequency antenna, is used to identify the signal source. The low frequency antenna identifier is used to determine the source of the low frequency signal, thereby distinguishing between multiple antenna signals. By analyzing the low frequency signal strength, the distance between the smart key and each low frequency antenna can be estimated, and the distance and angle of the smart key relative to each antenna can be further calculated. Using the relationship model between signal strength and distance, the low frequency signal strength can be converted to a specific distance value. A signal propagation model (e.g., a free space path loss model) is usually used for conversion. By comparing the low frequency signal strengths from multiple low frequency antennas, the angular position of the smart key can be inferred. Multiple low frequency antenna layouts allow the angle of the smart key to be calculated using triangulation or other positioning algorithms.

[0056] The smart key is positioned according to the distance and the angle.

[0057] In implementation, after the distance and the angle of the smart key relative to each low-frequency antenna are determined, the smart key can be accurately positioned. The three-dimensional position of the smart key is calculated using a triangulation algorithm in combination with the distance and the angle of the smart key relative to each low-frequency antenna. According to the calculated position of the smart key, it is determined whether the smart key is located in a preset area in the vehicle, so as to determine whether the vehicle is allowed to be powered on or unlocked.

[0058] In this embodiment, the distance and the angle of the smart key relative to each low-frequency antenna are determined by combining the low-frequency signal strength and the low-frequency antenna identifier corresponding to the low-frequency signal strength, so as to position the smart key. Not only the distance is considered, but also the angle information is combined to provide more comprehensive positioning capability. Through accurate analysis of signal strength indication data, high-precision positioning of the smart key is realized, which not only improves the positioning capability, but also enhances the safety and user experience of the vehicle.

[0059] In some embodiments, the low-frequency antenna module includes a low-frequency driving chip and at least one low-frequency antenna; and the detection of whether the low-frequency antenna module is available includes:

[0060] detecting whether the low-frequency driving chip fails;

[0061] In implementation, the low-frequency driving chip is used to generate low-frequency signals and transmit the low-frequency signals through the low-frequency antenna, modulate the signals to carry necessary information, and manage the activation and signal transmission sequence of multiple low-frequency antennas. Detecting whether the low-frequency driving chip fails is a prerequisite for ensuring the normal operation of the entire low-frequency antenna module. Chip failure can cause the antenna to fail to transmit low-frequency signals, thereby affecting the positioning of the smart key and the starting of the vehicle. Detecting whether the low-frequency driving chip fails includes detecting whether the connection of the low-frequency driving chip with other circuit components is normal to ensure that there is no short circuit or open circuit phenomenon, and also can monitor the working temperature and power supply voltage of the low-frequency driving chip in real time to prevent failure caused by overheating or abnormal voltage. The low-frequency driving chip can have a fault code recording function, and the specific fault type is identified by reading the fault code. If it is detected that the low-frequency driving chip has a failure (such as failure to normally generate signals or abnormal output), the low-frequency driving chip failure is marked, and it is further determined that the low-frequency antenna module is unavailable. If the low-frequency driving chip passes all detections and confirms that its function is normal, it is allowed to continue to detect the state of each low-frequency antenna.

[0062] In response to determining that the low-frequency driving chip fails, it is determined that the low-frequency antenna module is unavailable;

[0063] In implementation, a low-frequency drive chip failure can result in the inability to generate low-frequency signals of a specific frequency, directly affecting the wake-up and positioning of the smart key. Even if the signal generation is successful, problems in the modulation process can cause the signal to be unable to carry the correct information. Low-frequency drive chip failure can affect the control of multiple low-frequency antennas, resulting in the inability to perform effective positioning operations. Therefore, if it is determined that the low-frequency drive chip has failed, it is determined that the low-frequency antenna module is unavailable.

[0064] In response to determining that the low-frequency drive chip has not failed, detecting whether each low-frequency antenna in the low-frequency antenna module has failed using the low-frequency drive chip, and determining a first number of low-frequency antennas that have failed and a second number of low-frequency antennas that have not failed;

[0065] In implementation, after detecting that the low-frequency drive chip is working normally, each low-frequency antenna in the low-frequency antenna module can be further detected. The normal state of the low-frequency drive chip indicates that it can correctly generate and modulate low-frequency signals, providing a basis for low-frequency antenna detection. The low-frequency antenna module is usually composed of multiple low-frequency antennas, distributed in different positions of the vehicle. Detecting whether each low-frequency antenna has failed is key to ensuring the positioning accuracy of the smart key and the reliability of the system. Usually, the low-frequency drive chip activates each low-frequency antenna in turn, transmits test signals, monitors the signal transmission of each antenna, and confirms whether the signal is normally transmitted through a feedback mechanism to detect whether the signal strength of each antenna is within the normal range. Abnormal signal strength may indicate antenna failure, and it is necessary to check whether the antenna circuit has a short circuit, an open circuit, or other electrical problems. After completing the detection of each low-frequency antenna, the first number of low-frequency antennas that have failed and the second number of low-frequency antennas that have not failed are recorded. Through antenna-by-antenna detection, faulty antennas can be accurately identified and located, facilitating subsequent repair and maintenance. Even if some antennas fail, the system can still work through the remaining normal antennas, improving the fault tolerance and reliability of the system.

[0066] In response to determining that the first number is equal to the number of all low-frequency antennas in the low-frequency antenna module, it is determined that the low-frequency antenna module is unavailable;

[0067] In specific implementation, when the first number is equal to the total number of low-frequency antennas in the low-frequency antenna module, it indicates that all low-frequency antennas have failed. The low-frequency antenna module cannot complete its basic functions, and is therefore determined to be unavailable. By detecting each antenna individually to confirm that each antenna is not working properly, the accuracy of the determination is ensured. Since all antennas have failed, the module cannot transmit low-frequency signals, and thus cannot wake up and locate the smart key. After confirming that the low-frequency antenna module is unavailable, appropriate measures need to be taken to ensure the safety of the vehicle and the user experience. A backup two-way communication positioning module can be enabled for smart key positioning to ensure that the vehicle can still be started and unlocked normally. The user is prompted through the instrument panel or other user interfaces that the low-frequency antenna module is unavailable, and is advised to check and repair, with possible causes of failure and repair recommendations provided to help the user quickly solve the problem.

[0068] In response to determining that the second number is greater than or equal to the preset number, it is determined that the low-frequency antenna module is available.

[0069] In specific implementation, when the second number is greater than or equal to the preset number (the preset number is a threshold value set according to actual needs and redundancy design, to ensure that even if some low-frequency antennas fail, the remaining antennas can still meet the positioning needs, and the preset number can be set to 2, for example), it indicates that although some low-frequency antennas have failed, there are still enough antennas that can work normally, and it is determined that the low-frequency antenna module is available. After confirming that the low-frequency antenna module is available, the normally working low-frequency antennas can be used to continue smart key positioning, and the working parameters of the normal antennas can be dynamically adjusted if necessary to optimize signal coverage and positioning accuracy.

[0070] In this embodiment, comprehensive fault detection can timely identify and handle abnormalities of the low-frequency driving chip, avoiding positioning failure caused by chip failure. The detection process ensures that the vehicle will only enter the starting or unlocking process when the low-frequency driving chip is functioning properly, improving vehicle safety. The redundant design of multiple low-frequency antennas enables normal operation even in the event of partial low-frequency antenna failure, improving fault tolerance. By judging the number of antennas that have not failed, the normal operation of the low-frequency antenna module and the positioning accuracy of the smart key are ensured, not only improving the reliability and safety of the vehicle, but also optimizing the user experience and meeting the high requirements of modern vehicles for no-smart-key entry and starting functions.

[0071] In some embodiments, the positioning of the smart key using the multiple low-frequency antennas in the low-frequency antenna module and the two-way communication positioning module includes:

[0072] determining the low-frequency antennas in the low-frequency antenna module that have not failed as target low-frequency antennas;

[0073] In specific implementation, the low-frequency driving chip usually activates each low-frequency antenna in sequence, transmits a test signal, monitors the signal transmission of each antenna, confirms whether the signal is normally transmitted through a feedback mechanism, detects whether the signal strength of each antenna is within a normal range, and checks whether the antenna circuit has a short circuit, an open circuit or other electrical problems. After the detection of each low-frequency antenna is completed, the low-frequency antennas that do not have faults are identified and marked as target low-frequency antennas.

[0074] determining a target transmission power of the target low-frequency antennas according to the number of the target low-frequency antennas, and transmitting a low-frequency signal by using the target low-frequency antennas at the target transmission power;

[0075] In specific implementation, the number of target low-frequency antennas directly affects the signal coverage and strength. Therefore, it is necessary to adjust the transmission power according to the number of target low-frequency antennas, that is, to determine the target transmission power of the target low-frequency antennas. By optimizing the transmission power, unnecessary power consumption and interference can be reduced while ensuring signal coverage, thereby improving the accuracy of positioning the smart key.

[0076] In response to determining that the bidirectional communication positioning module receives signal strength indication data transmitted by the smart key for a low-frequency signal, positioning the smart key according to the signal strength indication data.

[0077] In specific implementation, the bidirectional communication positioning module (such as a Bluetooth low-power communication module) is used to receive and process the signal strength indication data transmitted by the smart key for a low-frequency signal. The signal strength indication data includes, but is not limited to, a low-frequency signal strength of a low-frequency signal received by the smart key and a low-frequency antenna identifier corresponding to the low-frequency signal strength. According to the low-frequency signal strength and the low-frequency antenna identifier corresponding to the low-frequency signal strength, the smart key can be positioned. If the smart key is positioned in the vehicle, the vehicle is allowed to be powered on to supply power to the engine and electrical equipment.

[0078] In this embodiment, by selecting target antennas and optimizing transmission power, efficient positioning of the smart key can still be achieved in the case of partial antenna failure. While ensuring signal coverage, unnecessary power consumption and interference are reduced, thereby improving the accuracy of positioning the smart key.

[0079] In some embodiments, the determining of the target transmission power of the target low-frequency antennas according to the number of the target low-frequency antennas includes:

[0080] determining a difference between the number of the target low-frequency antennas and a preset number;

[0081] In a specific implementation, when the number of target low-frequency antennas is greater than or equal to a preset number (the preset number is a threshold value set according to actual needs and redundancy design, which ensures that even if some low-frequency antennas fail, the remaining antennas can still meet the positioning needs, for example, the preset number can be set to 2), it indicates that although some low-frequency antennas have failed, there are still enough antennas that can work normally, so the difference between the number of currently available target low-frequency antennas and the preset number is determined to evaluate the adjustment range of the transmission power that needs to be made. Specifically, the difference = the number of target low-frequency antennas - the preset number.

[0082] determine an increase coefficient of the transmission power of the target low-frequency antenna according to the difference;

[0083] In a specific implementation, an increase coefficient of the transmission power is determined according to the calculated difference to compensate for the possible signal coverage shortage caused by the reduction in the number of antennas. The increase coefficient is a scaling factor for adjusting the transmission power. Specifically, wherein A represents the increase coefficient, △X represents the difference, B represents the number of all low-frequency antennas in the low-frequency antenna module, and e represents the natural constant. The larger the difference is, the larger the increase coefficient is generally, to ensure that the signal strength can compensate for the impact of the reduction in the number of antennas. A preset mapping relationship or algorithm can also be used to dynamically determine the increase coefficient according to the difference.

[0084] determine the product of the increase coefficient and the initial transmission power of the target low-frequency antenna as the target transmission power.

[0085] In a specific implementation, the initial transmission power is the standard transmission power under the condition that all antennas work normally. The initial transmission power is multiplied by the increase coefficient to obtain the adjusted target transmission power. The target transmission power will be used for the currently available target antenna to ensure signal strength and coverage and improve the positioning accuracy of the smart key.

[0086] In this embodiment, the transmission power is dynamically adjusted according to the number of actually available target low-frequency antennas, which ensures that even in the case of a reduction in the number of antennas, the signal coverage and strength still meet the positioning needs, and even if some antennas fail, normal functions can still be maintained through transmission power adjustment, improving the reliability of positioning and thus improving the reliability and safety of the vehicle power-on, meeting the high requirements of modern vehicles for no-smart-key entry and starting functions.

[0087] The smart key in the above embodiments is a key capable of realizing keyless entry and keyless start functions through wireless communication technology. Compared with traditional mechanical keys, it has the characteristics of convenience, security and intelligence, and is a technology widely used in modern cars. The hardware components of the smart key include a low-frequency signal receiving module, a two-way communication positioning module, a battery, a button, etc. Some smart keys are also equipped with a display screen or a touch screen for displaying vehicle status or performing more complex operations.

[0088] The two-way communication positioning module further includes an ultra-wideband communication module, which is a hardware component for realizing ultra-wideband communication, integrating the core functions of UWB (Ultra Wide Band) technology, and is mainly used for wireless communication and precise positioning. The ultra-wideband communication module realizes short-distance high-speed data transmission through UWB signals, and realizes centimeter-level precise positioning by calculating the time of arrival or flight time of the signals. UWB technology is based on impulse radio, which transmits data in an ultra-wide frequency spectrum by sending extremely short radio pulses (usually nanoseconds). Through signal interaction between multiple ultra-wideband communication modules, high-precision positioning can be achieved using the triangulation method or the multilateration method (TDoA, Time Difference of Arrival). The ultra-wideband communication module supports high-speed data transmission and is suitable for transmitting a large amount of data within a short distance. The ultra-wideband communication module can be used in a vehicle keyless entry system to determine whether the smart key is inside or outside the vehicle through centimeter-level positioning accuracy, thereby improving safety.

[0089] 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 of the present application can also be applied to a distributed scenario, and 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.

[0090] 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 the desired result. In addition, 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.

[0091] Based on the same inventive concept, the present application also provides a vehicle control device corresponding to any of the above-mentioned embodiment methods.

[0092] Reference Figure 2 The vehicle control device comprises:

[0093] A detection module 701 configured to, in response to receiving a power-on request, detect whether the low-frequency antenna module is available;

[0094] A positioning module 702 configured to, based on the detection result of the low-frequency antenna module, position the smart key by using the low-frequency antenna module and / or the bidirectional communication positioning module;

[0095] A control module 703 configured to, in response to determining that the smart key is inside the vehicle through positioning, control the vehicle to power on.

[0096] Further, the positioning module 702 is specifically configured to:

[0097] In response to determining that the low-frequency antenna module is available, position the smart key by using a plurality of low-frequency antennas in the low-frequency antenna module and the bidirectional communication positioning module;

[0098] In response to determining that the low-frequency antenna module is unavailable, position the smart key by using the bidirectional communication positioning module.

[0099] Further, the positioning module 702 is specifically configured to:

[0100] Use the bidirectional communication positioning module to emit a wake-up signal at a preset signal field strength, so that the wake-up signal can cover a preset area inside the vehicle;

[0101] In response to determining that the bidirectional communication positioning module receives a reply signal sent by the smart key in response to the wake-up signal, determine that the smart key is inside the vehicle.

[0102] Further, the positioning module 702 is specifically configured to:

[0103] Use the plurality of low-frequency antennas to emit low-frequency signals;

[0104] In response to determining that the bidirectional communication positioning module receives signal strength indication data sent by the smart key in response to the low-frequency signals, position the smart key according to the signal strength indication data.

[0105] Further, the positioning module 702 is specifically configured to:

[0106] Determine the distance and angle of the smart key relative to each low-frequency antenna according to the low-frequency signal strength and the low-frequency antenna identifier corresponding to the low-frequency signal strength;

[0107] position the smart key according to the distance and the angle.

[0108] Further, the detection module 701 is specifically configured to:

[0109] detect whether the low-frequency driving chip fails;

[0110] in response to determining that the low-frequency driving chip fails, determine that the low-frequency antenna module is unavailable;

[0111] in response to determining that the low-frequency driving chip does not fail, detect whether each low-frequency antenna in the low-frequency antenna module fails by using the low-frequency driving chip, and determine a first number of low-frequency antennas that fail and a second number of low-frequency antennas that do not fail;

[0112] in response to determining that the first number is equal to a number of all low-frequency antennas in the low-frequency antenna module, determine that the low-frequency antenna module is unavailable;

[0113] in response to determining that the second number is greater than or equal to a preset number, determine that the low-frequency antenna module is available.

[0114] Further, the positioning module 702 is specifically configured to:

[0115] determine a low-frequency antenna in the low-frequency antenna module that does not fail as a target low-frequency antenna;

[0116] determine a target transmission power of the target low-frequency antenna according to the number of the target low-frequency antennas, and transmit a low-frequency signal by using the target low-frequency antenna at the target transmission power;

[0117] in response to determining that the bidirectional communication positioning module receives signal strength indication data transmitted by the smart key for a low-frequency signal, position the smart key according to the signal strength indication data.

[0118] Further, the positioning module 702 is specifically configured to:

[0119] determine a difference between the number of the target low-frequency antennas and a preset number;

[0120] determine an increase coefficient of the transmission power of the target low-frequency antenna according to the difference;

[0121] determine a target transmission power as a product of the increase coefficient and an initial transmission power of the target low-frequency antenna.

[0122] For the convenience of description, the above apparatus is described in various modules in terms of functions respectively. Of course, the functions of the modules can be implemented in one or more software and / or hardware in the implementation of the present application.

[0123] The apparatus of the above embodiments is used to implement the corresponding vehicle control method of any of the above embodiments, and has the beneficial effects of the corresponding method embodiments, which are not described here again.

[0124] Based on the same inventive concept, the present 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 implements the vehicle control method of any of the above embodiments when executing the program.

[0125] Figure 3 A more specific hardware structure of an electronic device provided by the present embodiment 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 communication within the device.

[0126] The processor 1010 can be implemented in the form of 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 present embodiment.

[0127] The memory 1020 can be implemented in the form of 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 present embodiment are implemented by software or firmware, the related program codes are stored in the memory 1020 and executed by the processor 1010.

[0128] 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 devices can include a keyboard, a mouse, a touch screen, a microphone, various sensors, etc., and the output devices can include a display, a speaker, a vibrator, an indicator light, etc.

[0129] The communication interface 1040 is configured 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 a wired manner (for example, a USB, a network cable, etc.) or through a wireless manner (for example, a mobile network, WIFI, Bluetooth, etc.).

[0130] The bus 1050 includes a path for transmitting information between various components (for example, the processor 1010, the memory 1020, the input / output interface 1030, and the communication interface 1040) of the device.

[0131] 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 for the implementation of the embodiments of the present specification, and does not have to contain all the components shown in the figure.

[0132] The electronic device of the above embodiment is used to realize the corresponding vehicle control method in any of the above embodiments, and has the beneficial effects of the corresponding method embodiments, which are not described here.

[0133] Based on the same inventive concept, corresponding to the method of any of the above embodiments, the present application also provides a non-transitory computer readable storage medium, which stores computer instructions for causing the computer to execute the vehicle control method according to any of the above embodiments.

[0134] 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 technologies, compact disc read-only memory (CD-ROM), digital versatile disc (DVD) or other optical storage, magnetic cassette tape, magnetic tape disk storage or other magnetic storage devices, or any other non-transmission medium that can be used to store information accessible by a computing device.

[0135] The storage medium of the above embodiments stores computer instructions for causing the computer to perform the vehicle control method according to any one of the above embodiments, and has the beneficial effects of the corresponding method embodiments, which are not repeated here.

[0136] Based on the same concept, the present 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 according to any one of the above embodiments, and have the beneficial effects of the corresponding method embodiments, which are not repeated here.

[0137] It can be understood that, before using the technical solutions of the various embodiments in 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.

[0138] 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 the acquisition and use of personal information of the user. Thus, the user can voluntarily choose whether to provide personal information to the software or hardware such as electronic devices, application programs, servers or storage media that perform the technical solutions of the present disclosure according to the prompt information.

[0139] As an optional but not limiting implementation manner, in response to accepting the active request of the user, the manner of sending prompt information to the user may, for example, be a pop-up window manner, in which the prompt information can be presented in the form of text. In addition, the pop-up window can also carry selection controls for the user to select "agree" or "disagree" to provide personal information to the electronic device.

[0140] It can be understood that the above notification and user authorization process is only illustrative, and does not limit the implementation manner of the present disclosure, and other manners meeting the relevant laws and regulations can also be applied to the implementation manner of the present disclosure.

[0141] Those skilled in the art will understand that the discussion of any of the above embodiments is only exemplary and is not intended to imply that the scope of the present application is limited to these examples; under the idea of the present application, the technical features of the above embodiments or 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. In order to be brief, they are not provided in details.

[0142] 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 not be discussed in detail. Also, devices 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 regard to how the block diagram devices are implemented, e.g., in circuitry, are highly dependent on the platform within which the embodiments of the application are to be implemented (i.e., these details should be well within the purview of one of ordinary skill in the art). 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 embodiment of the application can be practiced without, or with variation 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.

[0143] 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.

[0144] Embodiments of the application are intended to cover all such alternatives, modifications and variations as falling within the scope of the broadest possible interpretation of the application as set forth in the appended claims. Accordingly, any and all such modifications, variations or equivalents that fall within the spirit and scope of the underlying principles should be intended to be embraced by the claims.

Claims

1. A vehicle control method characterized by, The vehicle comprises a low-frequency antenna module and a bidirectional communication positioning module; The low-frequency antenna module comprises a plurality of low-frequency antennas; the method comprises: In response to receiving a power-on request, detecting whether the low-frequency antenna module is available; Based on the detection result of the low-frequency antenna module, positioning the smart key by using the low-frequency antenna module and / or the bidirectional communication positioning module, comprising: In response to determining that the low-frequency antenna module is available, positioning the smart key by using a plurality of low-frequency antennas in the low-frequency antenna module and the bidirectional communication positioning module; In response to determining that the low-frequency antenna module is not available, positioning the smart key by using the bidirectional communication positioning module; In response to determining that the smart key is inside the vehicle through positioning, controlling the vehicle to power on.

2. The vehicle control method according to claim 1, characterized by, The positioning of the smart key by using the bidirectional communication positioning module comprises: Using the bidirectional communication positioning module to emit a wake-up signal at a preset signal field strength, so that the wake-up signal can cover a preset area in the vehicle; In response to determining that the bidirectional communication positioning module receives a reply signal sent by the smart key for the wake-up signal, determining that the smart key is inside the vehicle.

3. The vehicle control method according to claim 1, characterized by, The positioning of the smart key by using a plurality of low-frequency antennas in the low-frequency antenna module and the bidirectional communication positioning module comprises: Using the plurality of low-frequency antennas to emit low-frequency signals; In response to determining that the bidirectional communication positioning module receives signal strength indication data sent by the smart key for the low-frequency signals, positioning the smart key according to the signal strength indication data.

4. The vehicle control method according to claim 3, characterized by The signal strength indication data comprises low-frequency signal strength of the low-frequency signals received by the smart key and a low-frequency antenna identifier corresponding to the low-frequency signal strength; The positioning of the smart key according to the signal strength indication data comprises: Determining the distance and angle of the smart key relative to each low-frequency antenna according to the low-frequency signal strength and the low-frequency antenna identifier corresponding to the low-frequency signal strength; Positioning the smart key according to the distance and angle.

5. The vehicle control method according to claim 1, characterized by The low-frequency antenna module comprises a low-frequency driving chip and at least one low-frequency antenna; The detection of whether the low-frequency antenna module is available comprises: Detecting whether the low-frequency driving chip fails; In response to determining that the low-frequency driving chip fails, determining that the low-frequency antenna module is not available; In response to determining that the low-frequency driving chip does not fail, detecting whether each low-frequency antenna in the low-frequency antenna module fails by using the low-frequency driving chip, and determining a first number of low-frequency antennas that fail and a second number of low-frequency antennas that do not fail; In response to determining that the first number is equal to the number of all low-frequency antennas in the low-frequency antenna module, determining that the low-frequency antenna module is not available; In response to determining that the second number is greater than or equal to a preset number, determining that the low-frequency antenna module is available.

6. The vehicle control method according to claim 1, characterized by The positioning of the smart key by using a plurality of low-frequency antennas in the low-frequency antenna module and the bidirectional communication positioning module comprises: determining, as target low-frequency antennas, low-frequency antennas in the low-frequency antenna module that have not failed; determining a target transmission power of the target low-frequency antennas according to a number of the target low-frequency antennas, and transmitting a low-frequency signal by the target low-frequency antennas at the target transmission power; in response to determining that the bi-directional communication positioning module receives signal strength indication data transmitted by the smart key for the low-frequency signal, positioning the smart key according to the signal strength indication data.

7. The vehicle control method according to claim 6, characterized by The determining a target transmission power of the target low-frequency antennas according to a number of the target low-frequency antennas comprises: determining a difference between the number of the target low-frequency antennas and a preset number; determining an increasing coefficient of the transmission power of the target low-frequency antennas according to the difference; determining a product of the increasing coefficient and an initial transmission power of the target low-frequency antennas as the target transmission power.

8. A vehicle control device characterized by comprising: comprises: a detection module configured to, in response to receiving a power-on request, detect whether a low-frequency antenna module is available; the low-frequency antenna module comprises a plurality of low-frequency antennas; a positioning module configured to, based on a detection result of the low-frequency antenna module, position a smart key by the low-frequency antenna module and / or a bi-directional communication positioning module, comprising: in response to determining that the low-frequency antenna module is available, positioning the smart key by a plurality of low-frequency antennas in the low-frequency antenna module and the bi-directional communication positioning module; in response to determining that the low-frequency antenna module is not available, positioning the smart key by the bi-directional communication positioning module; a control module configured to, in response to determining that the smart key is inside the vehicle by positioning, control the vehicle to power on.

9. A vehicle characterized by comprising: The vehicle comprises the vehicle control device according to claim 8.

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