Vehicle control method and system based on aftermarket key

Abstract

Embodiments of the present application relate to the field of intelligent vehicle control. Disclosed are a vehicle control method and system based on an aftermarket key. The method comprises: a communication host module receives a control instruction sent by a mobile terminal for a specified function, and verifies that the control instruction is valid and then forwards the control instruction to a vehicle control host module; the vehicle control host module parses the control instruction, and sends a preset level signal to a control pin of an aftermarket key module on the basis of the control instruction, and the control pin controls, on the basis of the preset level signal, a group of function pins in the aftermarket key module corresponding to the specified function to be connected; and when the function pins are connected, the aftermarket key module sends to a vehicle a control signal for executing the specified function. The solution of the embodiment enables a user to directly control a vehicle by sending a digital signal via a mobile phone, thereby implementing intelligent control of the vehicle and improving the user experience.

Description

Vehicle control method and system based on aftermarket key Cross-references

[0001] This application claims priority to Chinese Patent Application No. 2024119121001, filed on December 24, 2024, entitled "Vehicle Control Method and System Based on Aftermarket Key", which is incorporated herein by reference in its entirety. Technical Field

[0002] This application relates to the field of automotive intelligent control, and in particular to a vehicle control method and system based on an aftermarket key. Background Technology

[0003] With the development of intelligent technologies, users' demands for intelligent vehicle control are constantly increasing. However, many early-produced cars lack open communication protocols and interfaces, making it impossible to directly connect to external control modules. Therefore, remote control functions such as locking, unlocking, or opening the trunk cannot be achieved via smartphones or other devices. These vehicles typically can only be operated using traditional physical keys. This limitation not only reduces the vehicle's level of intelligence but also affects the user's operating experience.

[0004] In recent years, digital key technology has been widely used as an advanced solution. Digital keys utilize the wireless communication functions of smartphones or other mobile devices (such as Bluetooth, near-field communication, etc.) to enable users to remotely control vehicles, such as unlocking and locking them, greatly improving the intelligence of vehicles and the user experience. However, because early-produced vehicles did not come pre-installed with such intelligent modules, they still cannot enjoy this intelligent control function. Summary of the Invention

[0005] The purpose of this application is to provide a vehicle control method and system based on an aftermarket key. By customizing an aftermarket key module, and based on the data interaction between the communication host module, the vehicle control host module and the aftermarket key module, the user can directly issue commands to the aftermarket key module via a mobile phone, thereby enabling the vehicle to perform corresponding functions directly through the mobile phone. This solves the problem that early-produced vehicles could not achieve intelligent control via mobile phone because they did not have a pre-installed intelligent control module.

[0006] To address the aforementioned technical problems, embodiments of this application provide a vehicle control method based on an aftermarket key, applied to a vehicle control system based on an aftermarket key. The system includes a communication host module, a vehicle control host module, and an aftermarket key module. The method includes: the communication host module receiving a control command issued by a mobile terminal for a specified function, and forwarding it to the vehicle control host module after verifying the validity of the control command; the vehicle control host module parsing the control command, and sending a preset level signal to the control pin of the aftermarket key module according to the control command; the control pin controlling a set of function pins in the aftermarket key module corresponding to the specified function to connect according to the preset level signal; and the aftermarket key module sending a control signal to the vehicle to execute the specified function when the function pins are connected.

[0007] In addition, the aftermarket key module in the system described above includes: an aftermarket key and a connector for connecting the aftermarket key to the vehicle control host module. Before the communication host module receives the control command issued by the mobile terminal for a specified function, the method further includes: pairing and binding the aftermarket key with the vehicle, wherein after binding, the aftermarket key has the same control permissions as the original vehicle key; wherein each of the control functions of the aftermarket key is mapped to each group of function pins of the connector.

[0008] In addition, the communication host module verifies the control command as described above, including: the communication host module parses the control command to obtain mobile terminal information; when the communication host module does not store the identity authentication result of the mobile terminal internally, it obtains the identity authentication result from the digital key cloud, the identity authentication result being used at least to verify whether the mobile terminal has the control authority to send the control command; the communication host module verifies whether the control command is valid based on the identity authentication result.

[0009] In addition, the communication host module described above has 4G communication capability, Bluetooth communication capability and GPS / GNSS positioning capability, and wirelessly connects with the mobile terminal via Bluetooth to receive the control commands.

[0010] In addition, the method described above further includes: the communication host module receiving the first permission instruction from the mobile terminal and forwarding it to the vehicle control host module; the vehicle control host module sending a first permission signal to the first enable pin of the connector according to the first permission instruction, and the first enable pin disabling / enabling one of the control functions according to the first permission signal.

[0011] In addition, the method described above also includes: the communication host module receiving the second permission instruction from the mobile terminal and forwarding it to the vehicle control host module; the vehicle control host module sending a second permission signal to the second enable pin of the connector according to the second permission instruction, and the second enable pin disabling / enabling the vehicle's intelligent keyless entry function according to the second permission signal.

[0012] Another embodiment of this application relates to a vehicle control system based on an aftermarket key, comprising: a communication host module, a vehicle control host module, and an aftermarket key module; the communication host module is used to receive control commands issued by the mobile terminal for a specified function, and forwards them to the vehicle control host module after verifying the validity of the control commands; the vehicle control host module is used to parse the control commands, and send a preset level signal to the control pin of the aftermarket key module according to the control commands, so that the control pin controls a set of function pins in the aftermarket key module corresponding to the specified function to connect according to the preset level signal; the aftermarket key module is used to send a control signal to the vehicle to execute the specified function when the function pins are connected.

[0013] In addition, the aftermarket key module as described above includes: an aftermarket key and a connector for connecting the aftermarket key and the vehicle control host module; the connector is provided with a plurality of control pins and a plurality of sets of function pins, each set of function pins being used to implement a control function according to the control of the control pins.

[0014] In addition, the connector described above is also provided with a first enable pin; the communication host module is also used to receive the permission instruction of the mobile terminal and forward it to the vehicle control host module; the vehicle control host module is used to send a permission control signal to the enable pin of the aftermarket key module according to the permission instruction, and the enable pin disables / enables one of the control functions according to the permission control signal.

[0015] In addition, a second enable pin is provided on the connector as described above; the communication host module is used to receive the second permission instruction from the mobile terminal and forward it to the vehicle control host module; the vehicle control host module is used to send a second permission signal to the second enable pin according to the second permission instruction, and the second enable pin disables / enables the car's intelligent keyless entry function according to the second permission signal.

[0016] The vehicle control method based on an aftermarket key in this embodiment is applied to a vehicle control system based on an aftermarket key. This system includes a communication host module, a vehicle control host module, and an aftermarket key module. The method includes: a user sending a control command to the communication host module via a mobile terminal; the communication host module receiving the control command from the mobile terminal for a specified function and forwarding it to the vehicle control host module after verifying its validity; the vehicle control host module parsing the control command and sending a preset level signal to the control pin of the aftermarket key module according to the control command; the control pin controlling a set of function pins corresponding to the specified function in the aftermarket key module according to the preset level signal; and the aftermarket key module sending a control signal to the vehicle to execute the specified function based on the connection status of the function pins. In other words, this embodiment achieves intelligent vehicle control and improves user experience by receiving a control command from a mobile terminal for a specified function, verifying its validity, and then having the vehicle control host module send a preset level signal to the control pin of the aftermarket key module according to the control command. The control pin then controls a set of function pins corresponding to the specified function according to the preset level signal, thereby sending a control signal to the vehicle to execute the specified function. Attached Figure Description

[0017] One or more embodiments are illustrated by way of example with reference numerals in the accompanying drawings. These illustrations do not constitute a limitation on the embodiments. Elements with the same reference numerals in the drawings are denoted as similar elements. Unless otherwise stated, the figures in the drawings are not to be limited by scale.

[0018] Figure 1 is a flowchart of a vehicle control method based on a third-party key provided in an embodiment of this application;

[0019] Figure 2 is a flowchart of a vehicle control method based on a third-party key provided in another embodiment of this application;

[0020] Figure 3 is a schematic diagram of the vehicle control system based on a third-party key provided in the embodiments of this application;

[0021] Figure 4 is a structural schematic diagram of the aftermarket key module provided in the embodiment of this application;

[0022] Figure 5 is a schematic diagram of the connector provided in an embodiment of this application;

[0023] Figure 6 is a schematic diagram of the connector provided in the embodiment of this application. Detailed Implementation

[0024] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the various embodiments of this application will be described in detail below with reference to the accompanying drawings. However, those skilled in the art will understand that many technical details are presented in the various embodiments of this application to enable readers to better understand this application. However, even without these technical details and various changes and modifications based on the following embodiments, the technical solutions claimed in this application can be implemented. It should be noted that the directional terms such as "upper," "lower," "left," and "right" described in the embodiments of this application are used to describe the angles shown in the accompanying drawings and should not be construed as limiting the embodiments of this application. Furthermore, in the context, it should also be understood that when it is mentioned that an element is connected "upper" or "lower" to another element, it can not only be directly connected to the other element "upper" or "lower," but also indirectly connected to the other element "upper" or "lower" through an intermediate element. The division of the various embodiments below is for the convenience of description and should not constitute any limitation on the specific implementation of this application. The various embodiments can be combined and referenced with each other without contradiction.

[0025] This application embodiment achieves intelligent control through a vehicle control system based on an aftermarket key installed inside the vehicle. By receiving and parsing control commands from a mobile terminal to perform specified functions, the aftermarket key module sends control signals to the vehicle to execute the specified functions, thereby achieving intelligent control of the vehicle. This allows vehicles without a pre-installed intelligent control module to enjoy intelligent control functions, improving the convenience of vehicle use. Several embodiments are described below to further illustrate the technical solution of this application.

[0026] One embodiment of this application relates to a vehicle control method based on an aftermarket key, specifically applied to a vehicle control system based on an aftermarket key. The system includes a communication host module, a vehicle control host module, and an aftermarket key module. Based on this, as shown in Figure 1, the method of this embodiment specifically includes the following steps 101-103.

[0027] Step 101: The communication host module receives the control command issued by the mobile terminal for the specified function, and forwards it to the vehicle control host module after verifying that the control command is valid.

[0028] Specifically, a user can use a mobile terminal to pair and connect with the vehicle via Bluetooth or other wireless communication methods, and then send control commands to the vehicle control system based on the aftermarket key pre-installed in the vehicle. These control commands are used to enable the vehicle to perform specified functions, such as unlocking, locking, locating the vehicle, accessing the trunk, and starting the engine. This embodiment does not impose specific limitations on this. In the aftermarket key-based vehicle control system, the vehicle control host module communicates with the communication host module and the aftermarket key module. The communication host module receives the control commands sent by the mobile terminal, verifies them, and then responds to the commands. It should be noted that when the user sends control commands through the mobile terminal, the distance between the mobile terminal and the vehicle must be within a preset range for the communication host module to receive the control commands. The preset range can be between 0 and 300 meters; this embodiment does not impose specific limitations on this. It should also be noted that the vehicle control host module and the communication host module can communicate using UART (Asynchronous Serial Communication). UART is a universal serial data bus used for asynchronous communication. This bus allows bidirectional communication, enabling full-duplex transmission and reception. In addition, the vehicle control host module and the communication host module can also use communication methods such as serial peripheral interface (SPI) and internal integrated circuit (I2C), and this application does not impose specific restrictions on them.

[0029] Step 102: The vehicle control host module parses the control command and sends a preset level signal to the control pin of the aftermarket key module according to the control command. The control pin controls a set of function pins in the aftermarket key module corresponding to the specified function to connect according to the preset level signal.

[0030] Specifically, before explaining this step, this embodiment first describes the aftermarket key module. In this embodiment, the aftermarket key module refers to an integrated module that includes at least one aftermarket key. The aftermarket key in this embodiment refers to a PCBA (Printed Circuit Board Assembly) board that is not manufactured by the original car manufacturer but has the exact same control functions as the original key. The aftermarket key in this embodiment can be obtained by the following method: A new PCBA board is obtained by copying the original car key's PCBA board to a specified size. The function buttons on this new PCBA board are removed, and the functions of each button (unlock, lock, find car, trunk, etc.) are mapped to external connection pins. Each function can be mapped to two (a set of) function pins. When a set of function pins is connected, it is equivalent to pressing the function button on the original car key corresponding to the function controlled by that set of function pins. Simultaneously, control pins are set for each set of function pins, and each control pin is used to control the connection between its corresponding set of function pins.

[0031] After the vehicle control host module receives the control command forwarded by the communication host module, the vehicle control host module learns the specified function corresponding to the command and sends a preset level signal to the control pin corresponding to the specified function. After receiving the preset level signal, the control pin controls the connection between itself and its corresponding set of function pins.

[0032] Step 103: When the function pin of the aftermarket key module is connected, it sends a control signal to the vehicle to perform the specified function.

[0033] Specifically, the aftermarket key module detects the connectivity of its internal functional pins. When it detects that a set of functional pins is connected, the aftermarket key module uses a low-frequency (LF) antenna or an ultra-high-frequency (UHF) antenna to send a control signal to the vehicle to perform the specified function.

[0034] Compared with related technologies, the vehicle control method based on an aftermarket key in this embodiment is applied to a vehicle control system based on an aftermarket key. This system includes a communication host module, a vehicle control host module, and an aftermarket key module. The method in this embodiment includes: a user sending a control command to the communication host module via a mobile terminal; the communication host module receiving the control command from the mobile terminal for a specified function and forwarding it to the vehicle control host module after verifying its validity; the vehicle control host module parsing the control command and sending a preset level signal to the control pin of the aftermarket key module according to the control command; the control pin controlling the connection of a set of function pins corresponding to the specified function in the aftermarket key module according to the preset level signal; and the aftermarket key module sending a control signal to the vehicle to execute the specified function based on the connection status of the function pins. In other words, this embodiment achieves intelligent vehicle control and improves user experience by receiving a control command from a mobile terminal for a specified function, verifying its validity, and then having the vehicle control host module send a preset level signal to the control pin of the aftermarket key module according to the control command. The control pin then controls the connection of two function pins corresponding to the specified function based on the preset level signal, thereby sending a control signal to the vehicle to execute the specified function.

[0035] Another embodiment of this application relates to a vehicle control method based on an aftermarket key. This embodiment is a supplement to the foregoing embodiment. The method of this embodiment is applied to a vehicle control system based on an aftermarket key. In this system, the aftermarket key module includes: an aftermarket key and a connector for connecting the aftermarket key and the vehicle control host module. Based on this, the method of this embodiment specifically includes the following contents.

[0036] In one example, before step 101 is executed, the method of this embodiment includes: pairing and binding the aftermarket key with the vehicle, wherein the aftermarket key has the same control permissions as the original vehicle key; wherein each control function of the aftermarket key is mapped to each group of function pins of the connector.

[0037] Specifically, in this embodiment, the aftermarket key refers to a PCBA board that is not manufactured by the original equipment manufacturer (OEM) and has the same control functions as the original key. The aftermarket key can be customized for a specific vehicle, and each control function of the aftermarket key is mapped to a different set of functional pins on the connector. After the aftermarket key is customized, if the vehicle needs to be controlled using it, the vehicle must be able to recognize and execute the control signals emitted by the aftermarket key. Therefore, after the aftermarket key is customized, it is paired with the vehicle as a "third key" to bind the aftermarket key to the vehicle and thus control it. This embodiment does not impose specific restrictions on the specific pairing and binding process between the aftermarket key and the vehicle; different vehicle manufacturers will develop different matching procedures, and the pairing and binding should be performed according to the actual process in the application.

[0038] In another example, as shown in Figure 2, the process of the communication host module verifying the control command in step 101 specifically includes the following steps 1011-1013:

[0039] Step 1011: The communication host module parses the control commands to obtain the mobile terminal information;

[0040] Step 1012: If the mobile terminal's authentication result is not stored inside the communication host module, obtain the authentication result from the digital key cloud. The authentication result is used at least to verify whether the mobile terminal has the control authority to send control commands.

[0041] Step 1013: The communication host module verifies whether the control command is valid based on the authentication result.

[0042] Specifically, in this embodiment, a specific application (APP) needs to be installed to issue control commands to the vehicle. The APP's server can communicate with the digital key cloud. When connected to the internet, after a user issues a control command for the first time via their mobile terminal, the command is forwarded to the digital key cloud. The command carries at least mobile terminal information and vehicle owner information. The digital key cloud verifies the mobile terminal's identity and permissions before storing the information. The command is then forwarded to the communication host module. The communication host module receives and parses the command to obtain the mobile terminal information. Since this is the first time the mobile terminal has issued a control command, the communication host module does not store the mobile terminal's authentication result. Therefore, the communication host module authenticates the mobile terminal with the digital key cloud based on the received command. This verifies whether the cloud stores the mobile terminal's information and whether the mobile terminal has the permission to send control commands. If the mobile terminal has the permission to send control commands, the module also verifies the permission level and validity period.

[0043] After verification, the communication host module records the authentication result: whether the mobile terminal has authorization or not. If the communication host module receives a control command from the mobile terminal again, it can directly verify the control command based on the mobile terminal's internally stored authentication result, without needing to verify again from the cloud. Even when the communication host module is offline and cannot connect to the digital key cloud, the mobile terminal can still control the vehicle.

[0044] It should be noted that the communication host module has 4G communication capabilities, Bluetooth communication capabilities, and Global Positioning System (GPS) / Global Navigation Satellite System (GNSS) positioning capabilities. Users can use the Bluetooth module of their mobile terminals to wirelessly connect with the communication host module and send control commands to it. When the communication host module receives a control command from a user's mobile terminal, it can parse the information of the mobile terminal that sent the command and compare it with the authentication result obtained during identity verification. If the communication host module finds that the current mobile terminal has the authority to send control commands, it will forward the control command to the vehicle control host module; if it finds that the current mobile terminal does not have the authority to send control commands, it will not forward the control command or perform other processing. By adding pre-authentication to the received control commands, the communication host module can ensure that it does not execute control commands from other users (mobile terminals), thereby enhancing the security of vehicle control.

[0045] In another example, the method of this embodiment further includes the following steps: the communication host module receives the first permission instruction from the mobile terminal and forwards it to the vehicle control host module; the vehicle control host module sends a first permission signal to the first enable pin of the aftermarket key module according to the first permission instruction, and the first enable pin disables / enables a control function according to the first permission signal.

[0046] Specifically, the process of the mobile terminal sending permission instructions and the communication host module receiving and forwarding permission instructions is the same as the process of processing control instructions. For details, please refer to steps 101 and 1011-1013. This embodiment will not repeat them here.

[0047] In this embodiment, the connector in the aftermarket key module is further provided with at least one first enable pin. The communication host module receives the first permission instruction from the mobile terminal and forwards it to the vehicle control host module. This first permission instruction is used to disable or enable a certain control function of the mobile phone on the vehicle. The vehicle control host module sends a first permission signal to the first enable pin in the aftermarket key module corresponding to the first permission instruction according to the first permission instruction. The first enable pin disables / enables the corresponding control function according to the first permission signal. It should be noted that this embodiment does not impose a specific limitation on the number of first enable pins; there can be one or more. Typically, the number of first enable pins can be the same as the number of control functions of the aftermarket key.

[0048] In another example, the connector in the aftermarket key module is also provided with at least one second enable pin. The method of this embodiment may also include the following steps: the communication host module receives the second permission instruction from the mobile terminal and forwards it to the vehicle control host module; the vehicle control host module sends a second permission signal to the second enable pin of the connector according to the second permission instruction, and the second enable pin disables / enables the vehicle intelligent keyless entry (PKE, Passive Keyless Enter) function according to the second permission signal.

[0049] Specifically, the process of the mobile terminal sending the second permission instruction and the communication host module receiving and forwarding the second permission instruction is the same as the process of processing the control instruction. For details, please refer to steps 101 and 1011-1013. This embodiment will not repeat them here.

[0050] Compared to related technologies, this embodiment sends commands from the communication host module and the vehicle control host module to the control pins or enable pins located in the aftermarket key module. This commands connect the function pins in the aftermarket key module used to implement a specific control function, thereby enabling control of functions such as unlocking, unlocking, and trunk access, improving the user experience. By enabling / disabling a control function or the vehicle's PKE function via the enable pin in the aftermarket key module through a mobile terminal, the vehicle control permissions can be adjusted, allowing for different control permissions to be granted to the user based on different usage scenarios.

[0051] Another embodiment of this application relates to a vehicle control system based on a third-party key, as shown in FIG3. The vehicle control system based on a third-party key in this embodiment includes: a communication host module 201, a vehicle control host module 202, and a third-party key module 203.

[0052] The communication host module 201 is used to receive control commands issued by the mobile terminal for a specified function, and forward them to the vehicle control host module 202 after verifying the validity of the control commands.

[0053] The vehicle control host module 202 is used to parse control commands and send a preset level signal to the control pins in the aftermarket key module 203 according to the control commands, so that the control pins control a set of function pins in the aftermarket key module 203 corresponding to the specified function to connect according to the preset level signal.

[0054] The aftermarket key module 203 is used to send a control signal to the vehicle to perform a specified function when the function pin is connected.

[0055] Specifically, the communication host module 201, vehicle control host module 202, and aftermarket key module 203 are all located inside the vehicle. These three modules can be housed within a unified device structure or independently; this embodiment does not impose specific limitations on this. The communication host module 201 has 4G communication capabilities, Bluetooth communication capabilities, and GPS / GNSS positioning capabilities. It wirelessly connects to a mobile terminal via Bluetooth to receive control commands. The vehicle control host module 202 is mainly used for vehicle status data collection and for controlling the aftermarket key module 203 to achieve vehicle control capabilities. The vehicle control host module 202 consists of a Controller Area Network (CAN) transceiver and an MCU. The vehicle control host module 202 communicates with the communication host module 201 using the CAN transceiver, obtains control commands forwarded by the communication host module 201, and, based on the control commands, sends a preset level signal to the control pins in the aftermarket key module 203 via the MCU. This causes the control pins to connect a set of functional pins in the aftermarket key module corresponding to a specified function according to the preset level signal. The aftermarket key module 203 is used to send a control signal to the vehicle to execute the specified function when it is connected to a set of function pins corresponding to the specified function.

[0056] In one example, as shown in Figure 4, the aftermarket key module includes: an aftermarket key 2031 and a connector 2032 for connecting the aftermarket key 2031 and the vehicle control host module 202; the connector 2032 is provided with multiple sets of functional pins 2033 and multiple control pins 2034, each set of functional pins 2033 is used to implement a control function according to the control of the control pins 2034.

[0057] Specifically, as shown in Figure 4, the aftermarket key module includes an aftermarket key 2031 and a connector 2032, as well as an MCU and a radio frequency module (not shown in the figure). The MCU of the aftermarket key module is used to acquire the received level signal of the control pin, and when the level signal of the control pin is a preset level signal, it connects the corresponding set of functional pins. After connection, the MCU of the aftermarket key module controls the radio frequency module to send the corresponding control signal to the vehicle. The radio frequency module may include an LF antenna and / or a UHF antenna, which is not specifically limited in this embodiment. In some cases, multiple control pins 2034 and multiple sets of functional pins 2033 can be set on the same connector, or they can be set on different connectors from the perspective of cost considerations. For example, as shown in Figure 5, the functional pins are set on a 10-pin connector, including five sets of functional pins: power, unlock, lock, vehicle finder, and trunk. As shown in Figure 6, the control pins are set on a 4-pin connector to transmit and receive data through the TX and RX pins. It should be noted that this is only an example of the connector layout and does not constitute any limitation on the connector in this embodiment.

[0058] In another example, the connector 2032 is also provided with a first enable pin; the communication host module 201 is also used to receive the first permission instruction from the mobile terminal and forward it to the vehicle control host module 202; the vehicle control host module 202 is used to send a first permission signal to the first enable pin according to the first permission instruction, and the first enable pin disables / enables a control function according to the first permission signal.

[0059] In another example, a second enable pin is also provided on the connector 2032; the communication host module 201 is also used to receive the second permission instruction from the mobile terminal and forward it to the vehicle control host module 202; the vehicle control host module 202 is used to send a second permission signal to the second enable pin according to the second permission instruction, and the second enable pin disables / enables the PKE function according to the second permission signal.

[0060] Compared with related technologies, this application embodiment receives control commands issued by a mobile terminal for a specified function. After verifying the validity of the control command, the vehicle control host module sends a preset level signal to the control pin of the aftermarket key module according to the control command. The control pin controls the connection of two function pins corresponding to the specified function according to the preset level signal. That is, this solution maps the functions implemented by the function buttons in the original car key circuit board to the function pins in the aftermarket key by customizing the aftermarket key. Each set of function pins corresponds to a control function. The control pins that control the connection of function pins are designed so that the aftermarket key module sends control signals to the vehicle to execute the specified function according to the connection status of the function pins. This allows the control signals sent by the mobile device to be converted into actual digital signals, thereby controlling the vehicle's unlocking, unlocking, and trunk functions. The beneficial effects are: this solution can be applied to early-production vehicles without replacing the original vehicle system, giving these vehicles functions similar to modern smart keys. Users do not need to rely on traditional physical keys and can operate through mobile devices such as mobile phones, greatly improving the convenience and intelligence of operation.

[0061] That is, those skilled in the art will understand that all or part of the steps in the methods of the above embodiments can be implemented by a program instructing related hardware. This program is stored in a storage medium and includes several instructions to cause a device (which may be a microcontroller, chip, etc.) or processor to execute all or part of the steps of the methods described in the various embodiments of this application. The aforementioned storage medium includes various media capable of storing program code, such as a USB flash drive, a portable hard drive, a read-only memory (ROM), a random access memory (RAM), a magnetic disk, or an optical disk.

[0062] Those skilled in the art will understand that the above embodiments are specific embodiments for implementing this application, and in practical applications, various changes can be made to them in form and detail without departing from the spirit and scope of this application.

Claims

1. A vehicle control method based on an aftermarket key, applied to a vehicle control system based on an aftermarket key, the system comprising a communication host module, a vehicle control host module, and an aftermarket key module, the method comprising: The communication host module receives control commands issued by the mobile terminal for a specified function, and forwards them to the vehicle control host module after verifying the validity of the control commands. The vehicle control host module parses the control command and sends a preset level signal to the control pin of the aftermarket key module according to the control command. The control pin controls a set of function pins in the aftermarket key module corresponding to the specified function to connect according to the preset level signal. When the functional pin is connected, the aftermarket key module sends a control signal to the vehicle to execute the specified function.

2. The method of claim 1, the secondary factory key module comprising: The method further includes: a secondary key and a connector for connecting the secondary key to the vehicle control host module, wherein, before the communication host module receives a control command issued by the mobile terminal for a specified function, the method also includes: The aftermarket key is paired and bound to the vehicle. After binding, the aftermarket key has the same control permissions as the original vehicle key. The control functions of the aftermarket key are respectively mapped to the respective groups of function pins of the connector.

3. The method of claim 1, wherein, The communication host module verifies the control command, including: The communication host module parses the control command to obtain mobile terminal information; When the identity authentication result of the mobile terminal is not stored in the communication host module, the identity authentication result is obtained from the digital key cloud. The identity authentication result is at least used to verify whether the mobile terminal has the control authority to send the control command. The communication host module verifies the validity of the control command based on the authentication result.

4. The method of claim 1, wherein, The communication host module has 4G communication capability, Bluetooth communication capability and GPS / GNSS positioning capability, and wirelessly connects with the mobile terminal via Bluetooth to receive the control commands.

5. The method of claim 2, wherein, The method further includes: The communication host module receives the first permission instruction from the mobile terminal and forwards it to the vehicle control host module; The vehicle control host module sends a first permission signal to the first enable pin of the connector according to the first permission instruction, and the first enable pin disables / enables one of the control functions according to the first permission signal.

6. The method of claim 2, wherein, The method further includes: The communication host module receives the second permission instruction from the mobile terminal and forwards it to the vehicle control host module; The vehicle control host module sends a second permission signal to the second enable pin of the connector according to the second permission instruction. The second enable pin disables / enables the vehicle's intelligent keyless entry function according to the second permission signal.

7. A vehicle control system based on a secondary factory key, comprising: Communication host module, vehicle control host module, and aftermarket key module; The communication host module is used to receive control commands issued by the mobile terminal for a specified function, and forward them to the vehicle control host module after verifying the validity of the control commands. The vehicle control host module is used to parse the control command and send a preset level signal to the control pin in the aftermarket key module according to the control command, so that the control pin controls a group of function pins in the aftermarket key module corresponding to the specified function to connect according to the preset level signal. The aftermarket key module is used to send a control signal to the vehicle to execute the specified function when the function pin is connected.

8. The system of claim 7, wherein, The aftermarket key module includes: an aftermarket key and a connector for connecting the aftermarket key to the vehicle control host module; The connector is provided with a plurality of control pins and a plurality of sets of function pins, each set of function pins being used to implement a control function according to the control pins.

9. The system of claim 8, wherein, The connector is also provided with a first enable pin; The communication host module is used to receive the first permission command from the mobile terminal and forward it to the vehicle control host module; The vehicle control host module is used to send a first permission signal to the first enable pin according to the first permission instruction, and the first enable pin disables / enables one of the control functions according to the first permission signal.

10. The system of claim 8, wherein, The connector is also provided with a second enable pin; The communication host module is used to receive the second permission command from the mobile terminal and forward it to the vehicle control host module; The vehicle control host module is used to send a second permission signal to the second enable pin according to the second permission instruction, and the second enable pin disables / enables the vehicle's intelligent keyless entry function according to the second permission signal.

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