Methods, apparatus, electronic devices and vehicles for driving low-frequency chips

Abstract

This application provides a method, apparatus, electronic device, and vehicle for driving a low-frequency chip. The method includes, when the vehicle is determined to be in a target mode, acquiring the connection status of the door wiring harness and the vehicle body connection terminal; when the connection status is determined to be connected, a door closing signal is generated, and the conduction of the door wiring harness generates a momentary large current. After the vehicle controller acquires the door closing signal, it sends a command to the low-frequency chip to prohibit the execution of the key search strategy, thus preventing the low-frequency chip from starting. This prevents the momentary large current generated by the conduction of the door wiring harness from flowing through the low-frequency chip, thus preventing chip breakdown. Alternatively, after a preset delay, the method controls the vehicle's low-frequency chip to execute the key search strategy. In this way, after the preset delay, the momentary large current generated by the conduction of the door wiring harness has disappeared, and controlling the vehicle's low-frequency chip to execute the key search strategy will not cause chip breakdown, improving the safety of the low-frequency chip.

Description

Technical Field

[0001] This application relates to the field of vehicle technology, and more particularly to a method, apparatus, electronic device, and vehicle for driving a low-frequency chip. Background Technology

[0002] The process of connecting the door wiring harness to the body connection terminal and the door connection terminal is usually carried out when the vehicle controller is powered on. That is, the connection process between the door wiring harness and the body connection terminal is hot-plugging. Hot-plugging generates a large instantaneous current. If this large instantaneous current is injected into the low-frequency chip, it will cause the low-frequency chip to break down, so that the low-frequency chip cannot work properly. Summary of the Invention

[0003] In view of this, the purpose of this application is to provide a method, apparatus, electronic device and vehicle for driving low-frequency chips.

[0004] To achieve the above objectives, the first aspect of this application provides a method for driving a low-frequency chip. The method is performed based on a vehicle door wiring harness assembly, which includes a body connection terminal disposed on the vehicle body, a door connection terminal disposed on the door, and a door wiring harness. One end of the door wiring harness is connected to the door connection terminal, and the other end of the door wiring harness is used to connect to the body connection terminal.

[0005] The method includes:

[0006] In response to determining that the vehicle is in the target mode, the connection status of the door wiring harness and the body connection terminal is obtained;

[0007] In response to the connection status being "connected", a command to prohibit the execution of the key search strategy is sent to the low-frequency chip, or the low-frequency chip of the vehicle is controlled to execute the key search strategy after a preset period of time.

[0008] Optionally, the step of sending a command to the low-frequency chip to prohibit the execution of the key-finding strategy or controlling the low-frequency chip of the vehicle to execute the key-finding strategy after a preset period of time in response to the connection status being connected includes:

[0009] In response to the connection status being "connected", the power status of the vehicle is obtained;

[0010] In response to the power state being "power-on", a command is sent to the low-frequency chip to prohibit the execution of the key search strategy, or the low-frequency chip of the vehicle is controlled to execute the key search strategy after a preset period of time.

[0011] Optionally, sending a command to the low-frequency chip to prohibit the execution of the key-finding strategy or controlling the low-frequency chip of the vehicle to execute the key-finding strategy after a preset time period includes:

[0012] Obtain the initial current value on the door wiring harness;

[0013] In response to the initial current value being greater than a first preset value, a strategy to prohibit the execution of the key lookup is sent to the low-frequency chip.

[0014] In response to the initial current value being greater than a second preset value and less than or equal to a first preset value, the low-frequency chip of the vehicle is controlled to execute a key search strategy after a preset time period.

[0015] Wherein, the second preset value is less than the first preset value.

[0016] Optionally, controlling the vehicle's low-frequency chip to execute a key-finding strategy after a preset time period includes:

[0017] In response to the initial current value being greater than a second preset value and less than or equal to a third preset value, the low-frequency chip of the vehicle is controlled to execute a key search strategy after a first preset time period.

[0018] In response to the initial current value being greater than a third preset value and less than or equal to a first preset value, the low-frequency chip of the vehicle is controlled to execute a key search strategy after a second preset time period.

[0019] Wherein, the third preset value is greater than the second preset value and less than the first preset value, and the first preset time period is less than the second preset time period.

[0020] Optionally, controlling the vehicle's low-frequency chip to execute a key-finding strategy after a preset time period includes:

[0021] After the preset time period, the current value on the door wiring harness is acquired in real time;

[0022] In response to the current value being less than or equal to a second preset value, the low-frequency chip controlling the vehicle executes a key-finding strategy.

[0023] Optionally, it also includes:

[0024] Determine whether the vehicle's preset configuration word information database includes preset configuration word information;

[0025] If the preset configuration word information is not found in the preset configuration word information database, then the vehicle is determined to be in the target mode;

[0026] If the preset configuration word information is included in the vehicle's preset configuration word information database, then the vehicle is determined to be in a non-target mode.

[0027] Optionally, the method further includes:

[0028] In response to receiving the instruction that the vehicle has rolled off the production line, the current operating mode of the vehicle is switched from target mode to non-target mode, the preset configuration word information is written into the preset configuration word information database, and an instruction to release the prohibition of executing the key search strategy is sent to the low-frequency chip.

[0029] The second aspect of this application provides an apparatus for driving a low-frequency chip. The apparatus is based on a vehicle door wiring harness assembly, which includes a body connection terminal disposed on the vehicle body, a door connection terminal disposed on the door, and a door wiring harness. One end of the door wiring harness is connected to the door connection terminal, and the other end of the door wiring harness is used to connect to the body connection terminal.

[0030] The device includes:

[0031] The acquisition module is configured to acquire the connection status of the door wiring harness and the body connection terminal in response to determining that the vehicle is in the target mode;

[0032] The execution module is configured to, in response to the connection status being connected, send a command to the low-frequency chip to prohibit the execution of the key search strategy or to control the low-frequency chip of the vehicle to execute the key search strategy after a preset period of time.

[0033] A third aspect of this application provides an electronic device including a memory, a processor, and a computer program stored in the memory and running on the processor, wherein the processor executes the program to implement the method as described in any of the first aspects above.

[0034] A fourth aspect of this application provides a vehicle that includes the device described in the second aspect or the electronic device described in the third aspect.

[0035] As can be seen from the above, the method, apparatus, electronic device, and vehicle for driving the low-frequency chip provided in this application, when determining that the vehicle is in a target mode, acquire the connection status of the door wiring harness and the vehicle body connection terminal. When the connection status is determined to be connected, a door closing signal is generated. At the same time, the conduction of the door wiring harness generates a momentary large current. After the vehicle controller acquires the door closing signal, it sends a command to the low-frequency chip to prohibit the execution of the key search strategy, thereby preventing the low-frequency chip from starting. In this way, the momentary large current generated by the conduction of the door wiring harness will not flow through the low-frequency chip, thus preventing the low-frequency chip from breaking down. Alternatively, after the vehicle controller receives the door closing signal, it controls the vehicle's low-frequency chip to execute the key search strategy after a preset time period. At this time, the low-frequency chip is not prohibited from executing the key search strategy, nor is it immediately controlled to execute the key search strategy as in the existing method. Instead, the low-frequency chip is controlled to execute the key search strategy after a preset time period. In this way, the instantaneous large current generated by the conduction of the door wiring harness has disappeared after the preset time period. At this time, controlling the low-frequency chip to execute the key search strategy will not cause the low-frequency chip to break down. Thus, the low-frequency chip can continue to be controlled to execute the key search strategy to test the vehicle's keyless entry and start system. Attached Figure Description

[0036] To more clearly illustrate the technical solutions in this application or related technologies, the drawings used in the description of the embodiments or related technologies will be briefly introduced below. Obviously, the drawings described below are only embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0037] Figure 1 This is a flowchart illustrating a method for driving a low-frequency chip according to an embodiment of this application.

[0038] Figure 2 This is a schematic diagram of a device for driving a low-frequency chip according to an embodiment of this application;

[0039] Figure 3 This is a schematic diagram of an electronic device according to an embodiment of this application. Detailed Implementation

[0040] To make the objectives, technical solutions, and advantages of this application clearer, the following detailed description is provided in conjunction with specific embodiments and the accompanying drawings.

[0041] It should be noted that, unless otherwise defined, the technical or scientific terms used in the embodiments of this application should have the ordinary meaning understood by one of ordinary skill in the art to which this application pertains. The terms "first," "second," and similar terms used in the embodiments of this application do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Terms such as "comprising" or "including" mean that the element or object preceding the word encompasses the elements or objects listed after the word and their equivalents, without excluding other elements or objects. Terms such as "connected" or "linked" are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. Terms such as "upper," "lower," "left," and "right" are only used to indicate relative positional relationships; when the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0042] The vehicle operates in two modes: factory mode and non-factory mode. Factory mode represents the vehicle being in the production process. When the vehicle is in factory mode, the door installation stage is generally carried out with the vehicle controller powered on.

[0043] The car body and doors are connected by a door wiring harness used to transmit electrical energy and signals. During the door installation stage, one end of the door wiring harness is usually connected to the door connection terminal first, and then the other end of the control door wiring harness is connected to the body connection terminal. When the other end of the door wiring harness is connected to the body connection terminal, the door wiring harness conducts electricity between the body connection terminal and the door connection terminal, realizing an operation similar to closing the door and sending a signal that the door is closed.

[0044] A vehicle's keyless entry and start system (PEPS) includes a low-frequency chip and multiple low-frequency antennas that control the low-frequency chip. The low-frequency chip typically refers to a controller or low-frequency receiver used in the keyless entry and start system.

[0045] For the keyless entry and start system (PEPS) of a vehicle, the trigger command of its low-frequency chip is usually the door closing scenario. That is, when the vehicle controller receives the signal that the door is closed, it will immediately trigger the low-frequency chip, which will drive the low-frequency antenna to perform the key search strategy to determine the location of the car key, and then perform the door locking or door unlocking operation.

[0046] As mentioned earlier, when the other end of the door wiring harness is connected to the body connection terminal, the door wiring harness conducts the connection between the body connection terminal and the door connection terminal, realizing an operation similar to closing the door and sending a door closing signal. When the vehicle controller receives the door closing signal, it will immediately trigger the low-frequency chip, which drives the low-frequency antenna to perform the key search strategy to determine the location of the car key, and then perform the vehicle locking or vehicle unlocking operation.

[0047] However, since the process of connecting the door wiring harness to the body connection terminal and the door connection terminal is usually carried out when the vehicle controller is powered on, the connection process between the door wiring harness and the body connection terminal is hot-swapped (hot-swapping refers to inserting or removing modules, boards, wiring harnesses, etc. into or out of the system without turning off the system power, thereby improving the system's reliability, quick maintenance, redundancy, and timely recovery capability from disasters). Hot-swapping generates a large instantaneous current. If this large instantaneous current is injected into the low-frequency chip, it will cause the low-frequency chip to break down, making it unable to work properly, and thus causing the keyless entry and start system to fail.

[0048] Therefore, how to prevent low-frequency chips from being damaged by instantaneous current caused by hot-plugging of gate harnesses is an urgent problem to be solved.

[0049] Based on this, see Figure 1 This application provides a method for driving a low-frequency chip. The method is performed based on a vehicle door wiring harness assembly. The vehicle door wiring harness assembly includes a body connection terminal disposed on the vehicle body, a door connection terminal disposed on the door, and a door wiring harness. One end of the door wiring harness is connected to the door connection terminal, and the other end of the door wiring harness is used to connect to the body connection terminal.

[0050] Specifically, the vehicle door wiring harness assembly includes a body connection terminal disposed on the vehicle body, a door connection terminal disposed on the door, and a door wiring harness. One end of the door wiring harness is connected to the door connection terminal, and the other end of the door wiring harness is used to connect to the body connection terminal. When the other end of the door wiring harness is connected to the body connection terminal...

[0051] The method is executed by the vehicle controller, and the method specifically includes the following steps:

[0052] Step S100: In response to determining that the vehicle is in the target mode, obtain the connection status of the door wiring harness and the body connection terminal;

[0053] Step S200: In response to the connection status being connected, a command to prohibit the execution of the key search strategy is sent to the low-frequency chip, or the low-frequency chip of the vehicle is controlled to execute the key search strategy after a preset time period.

[0054] Specifically, the target mode can be a vehicle factory mode, which represents the vehicle being in the production process.

[0055] When the vehicle is in target mode, the door installation phase is generally carried out with the vehicle controller powered on. The car body and doors are connected by a door wiring harness used to transmit electrical energy and signals. During door installation, typically one end of the door wiring harness is first connected to the door connection terminal, and then the other end is connected to the body connection terminal. Once the other end of the door wiring harness is connected to the body connection terminal, the door wiring harness conducts electricity between the body connection terminal and the door connection terminal. Since the vehicle controller is always powered on, this conduction of the door wiring harness generates a large instantaneous current.

[0056] Therefore, in this application, when it is determined that the vehicle is in the target mode, the connection status of the door wiring harness and the body connection terminal is obtained. When it is determined that the connection status is connected, a door closing signal is generated, and at the same time, the conduction of the door wiring harness will generate a large instantaneous current.

[0057] When the vehicle controller receives the door closing signal, it sends a command to the low-frequency chip to prohibit the execution of the key search strategy, thereby preventing the low-frequency chip from starting. In this way, the instantaneous large current generated by the conduction of the door wiring harness will not flow through the low-frequency chip, thus preventing the low-frequency chip from breaking down.

[0058] Alternatively, after the vehicle controller receives a door closing signal, it can control the vehicle's low-frequency chip to execute the key-finding strategy after a preset time period. In this case, the low-frequency chip is not prohibited from executing the key-finding strategy, nor is it immediately controlled as in the current method. Instead, the low-frequency chip is controlled to execute the key-finding strategy after the preset time period. In this way, the instantaneous high current generated by the door wiring harness has disappeared after the preset time period, and controlling the low-frequency chip to execute the key-finding strategy at this time will not cause the low-frequency chip to break down. Therefore, the low-frequency chip can continue to execute the key-finding strategy to test the vehicle's keyless entry and start system.

[0059] The preset time period is a preset time period during which the instantaneous high current has disappeared. It is set based on the duration of the instantaneous high current generated by the conduction of the door wiring harness. The preset time period is longer than the duration of the instantaneous high current generated by the conduction of the door wiring harness.

[0060] For example, if the duration of the instantaneous high current generated by the conduction of the door harness is no more than 200ms, then the preset time period can be 250ms; if the duration of the instantaneous high current generated by the conduction of the door harness is no more than 250ms, then the preset time period can be 300ms.

[0061] In this application, when the vehicle is determined to be in target mode, the connection status between the door wiring harness and the vehicle body is obtained. When the connection status is determined to be connected, a door closing signal is generated. Simultaneously, the conduction of the door wiring harness generates a momentary large current. After the vehicle controller receives the door closing signal, it sends a command to the low-frequency chip to prohibit the execution of the key search strategy, thus preventing the low-frequency chip from starting. This prevents the momentary large current generated by the door wiring harness from flowing through the low-frequency chip and thus avoids chip breakdown. Alternatively, after the vehicle controller receives the door closing signal, it controls the vehicle's low-frequency chip to execute the key search strategy after a preset time period. In this case, the low-frequency chip is not prohibited from executing the key search strategy, nor is it immediately controlled to execute the key search strategy as in existing methods. Instead, it is controlled to execute the key search strategy after a preset time delay. Thus, the instantaneous high current generated by the conduction of the rear door wiring harness during the preset time period has disappeared. At this time, the low-frequency chip controlling the vehicle to execute the key search strategy will not cause the low-frequency chip to break down. Thus, the low-frequency chip can continue to be controlled to execute the key search strategy to test the vehicle's keyless entry and start system.

[0062] In some embodiments, step S200, in response to the connection status being connected, sends a command to the low-frequency chip to prohibit the execution of the key-finding strategy or controls the low-frequency chip of the vehicle to execute the key-finding strategy after a preset period of time, including:

[0063] In response to the connection status being "connected", the power status of the vehicle is obtained;

[0064] In response to the power state being "power-on", a command is sent to the low-frequency chip to prohibit the execution of the key search strategy, or the low-frequency chip of the vehicle is controlled to execute the key search strategy after a preset period of time.

[0065] Specifically, when the connection status is "connected", it is further determined whether the vehicle's power supply and vehicle control are in a powered-on state, and at this time the vehicle's power status is obtained.

[0066] When the power state is determined to be powered on, the connection process between the door wiring harness and the vehicle body is determined to be hot-plugging (hot-plugging refers to inserting or removing modules, boards, wiring harnesses, etc. into or out of the system without turning off the system power, thereby improving the system's reliability, rapid repairability, redundancy, and timely disaster recovery capabilities). Hot-plugging will generate a large instantaneous current. If this large instantaneous current is injected into the low-frequency chip, it will cause the low-frequency chip to break down, so that the low-frequency chip cannot work properly.

[0067] Therefore, when the power supply state is determined to be "power-on" and the connection process between the door wiring harness and the vehicle body is determined to be "hot-plugged", the conduction of the door wiring harness will generate a large instantaneous current. At this time, a command to prohibit the execution of the key search strategy is sent to the low-frequency chip, or the low-frequency chip of the vehicle is controlled to execute the key search strategy after a preset period of time, so as to ensure that the low-frequency chip will not break down under the action of the large instantaneous current and improve the safety of the low-frequency chip.

[0068] In this application, after determining that the connection status is connected, it is necessary to further determine whether the vehicle's power supply and vehicle control are powered on. Only when the vehicle's power supply and vehicle control are powered on will the door wiring harness generate a momentary large current. Therefore, it is necessary to send a command to the low-frequency chip to prohibit the execution of the key search strategy or to control the vehicle's low-frequency chip to execute the key search strategy after a preset period of time, so as to ensure that the low-frequency chip will not break down under the action of the momentary large current and improve the safety of the low-frequency chip.

[0069] In some embodiments, step S200, which involves sending a command to the low-frequency chip to prohibit the execution of the key-finding strategy or controlling the low-frequency chip of the vehicle to execute the key-finding strategy after a preset time period, includes:

[0070] Obtain the initial current value on the door wiring harness;

[0071] In response to the initial current value being greater than a first preset value, a command to prohibit the execution of the key lookup strategy is sent to the low-frequency chip.

[0072] In response to the initial current value being greater than a second preset value and less than or equal to a first preset value, the low-frequency chip of the vehicle is controlled to execute a key search strategy after a preset time period.

[0073] Wherein, the second preset value is less than the first preset value.

[0074] Specifically, the initial current value on the door wiring harness is obtained. The initial current value is the current value generated when the door wiring harness starts to conduct. This initial current value is the largest among all current values ​​generated after the door wiring harness is conducted. After the door wiring harness is conducted, the current value of the door wiring harness will gradually decrease from the initial current value until the current value returns to normal.

[0075] In this application, since the initial current value is the largest current value among all current values ​​generated after the door wiring harness is turned on, the determination of whether to send a command to the low-frequency chip to prohibit the execution of the key search strategy or to control the low-frequency chip of the vehicle to execute the key search strategy after a preset period of time by judging the initial current value can greatly improve the security of the subsequent control strategy.

[0076] Furthermore, when the initial current value is greater than the first preset value, the initial current value is very large. Therefore, it is impossible to determine when the instantaneous large current generated after the door wiring harness is turned on will disappear. If the vehicle's low-frequency chip is controlled to execute the key-finding strategy after the preset time period, it may still cause the low-frequency chip to be damaged by the instantaneous large current. Therefore, when the initial current value is very large, a command to prohibit the execution of the key-finding strategy is directly sent to the low-frequency chip to ensure that the low-frequency chip is not triggered to start, thereby fundamentally avoiding the low-frequency chip being damaged by the instantaneous large current.

[0077] When the initial current value is greater than the second preset value and less than or equal to the first preset value, the initial current value is relatively large, but not very large. Therefore, it can be determined that the instantaneous large current generated after the door wiring harness is turned on will disappear after a period of time. Thus, the low-frequency chip of the vehicle can be controlled to execute the key search strategy after the preset time period. In this way, the instantaneous large current generated by the door wiring harness has disappeared after the preset time period. At this time, controlling the low-frequency chip of the vehicle to execute the key search strategy will not cause the low-frequency chip to break down. Thus, the low-frequency chip can continue to be controlled to execute the key search strategy to test the vehicle's keyless entry and start system.

[0078] Wherein, the first preset value is a very large current generated when the door wiring harness is turned on, and the second preset value is a large current generated when the door wiring harness is turned on.

[0079] In this application, different operations are controlled based on different initial current values. When the initial current value is very large, a command to prohibit the execution of the key search strategy is sent directly to the low-frequency chip. When the initial current value is relatively large, the low-frequency chip of the vehicle is controlled to execute the key search strategy after a preset time period. This can ensure that the low-frequency chip will not be broken down by a sudden large current and improve the safety of the low-frequency chip.

[0080] In some embodiments, controlling the low-frequency chip of the vehicle to execute a key-finding strategy after a preset time period includes:

[0081] In response to the initial current value being greater than a second preset value and less than or equal to a third preset value, the low-frequency chip of the vehicle is controlled to execute a key search strategy after a first preset time period.

[0082] In response to the initial current value being greater than a third preset value and less than or equal to a first preset value, the low-frequency chip of the vehicle is controlled to execute a key search strategy after a second preset time period.

[0083] Wherein, the third preset value is greater than the second preset value and less than the first preset value, and the first preset time period is less than the second preset time period.

[0084] Specifically, when the low-frequency chip controlling the vehicle executes the key search strategy after a preset time period, the preset time period needs to be further limited. If the preset time period is too short, the instantaneous high current may not be completely eliminated. In this case, if the low-frequency chip controlling the vehicle executes the key search strategy, it may still cause the low-frequency chip to break down.

[0085] Therefore, in this application, the preset time period is still determined based on the initial current value.

[0086] When the initial current value is greater than the second preset value and less than or equal to the third preset value, the initial current value is the smaller current value within the range of the first and second preset values. Therefore, the time taken for the initial current to disappear will be relatively short. Thus, after a short first preset time period, the vehicle's low-frequency chip is controlled to execute the key search strategy. This ensures that the initial current or instantaneous large current disappears after the first preset time period, preventing the low-frequency chip from being damaged by the instantaneous large current. At the same time, the short first preset time period means that the delay time for the vehicle's low-frequency chip to execute the key search strategy is short, which will not affect the execution of the subsequent key search strategy.

[0087] When the initial current value is greater than the third preset value and less than or equal to the first preset value, the initial current value is the larger current value within the range of the first and second preset values. Therefore, the time taken for the initial current to disappear will be relatively long. Thus, after a longer second preset period, the low-frequency chip of the vehicle is controlled to execute the key search strategy. In this way, it can be ensured that the initial current or instantaneous large current disappears after the second preset period, and that the low-frequency chip will not be damaged by the instantaneous large current.

[0088] Wherein, the third preset value is greater than the second preset value and less than the first preset value, and further, the third preset value can be an intermediate value within the range of the first preset value and the second preset value.

[0089] The first preset time period is a preset shorter delay time, and the second preset time period is a preset longer delay time. For example, the first preset time period can be 150ms, and the second preset time period can be 200ms.

[0090] In this application, different preset time periods of delay are determined based on the magnitude of different initial current values. This ensures that the initial current or instantaneous high current disappears after the preset time period, preventing the low-frequency chip from being damaged by the instantaneous high current. At the same time, the different delay times for the low-frequency chip controlling the vehicle to execute the key-finding strategy minimize the impact on the execution of the subsequent key-finding strategy.

[0091] In some embodiments, controlling the low-frequency chip of the vehicle to execute a key-finding strategy after a preset time period includes:

[0092] After the preset time period, the current value on the door wiring harness is acquired in real time;

[0093] In response to the current value being less than or equal to a second preset value, the low-frequency chip controlling the vehicle executes a key-finding strategy.

[0094] Specifically, when the low-frequency chip controlling the vehicle executes the key-finding strategy after a preset time period, the current value on the door wiring harness can also be acquired in real time after the preset time period. When it is determined that the current value on the door wiring harness continuously decreases from the initial current value until the current value is less than or equal to a second preset value, it indicates that the current value is small and has returned to normal. This small current value will not cause the low-frequency chip to break down after flowing through it. Therefore, the low-frequency chip controlling the vehicle executes the key-finding strategy at this time.

[0095] In this application, the method of controlling the low-frequency chip of the vehicle to execute the key search strategy when the current value on the door wiring harness is determined to be less than or equal to a second preset value can directly determine the delay period (i.e., the preset period) by monitoring the real-time current value. This method of determining the delay period is relatively accurate, but it consumes more energy in the vehicle.

[0096] In some embodiments, the method further includes:

[0097] Determine whether the vehicle's preset configuration word information database includes preset configuration word information;

[0098] If the preset configuration word information is not found in the preset configuration word information database, then the vehicle is determined to be in the target mode;

[0099] If the preset configuration word information is included in the vehicle's preset configuration word information database, then the vehicle is determined to be in a non-target mode.

[0100] Specifically, the method also includes how to determine if the vehicle is in the target mode, specifically including:

[0101] The system determines whether the vehicle's preset configuration word information library includes preset configuration word information. This preset configuration word information library is a pre-defined database containing all configuration words for the vehicle, with each configuration word representing a different function of the vehicle. Therefore, by determining whether the vehicle's preset configuration word information library includes preset configuration word information, the current operating mode of the vehicle can be further determined.

[0102] The preset configuration word information is preset configuration word information related to the vehicle's target mode.

[0103] If the preset configuration word information is not included in the preset configuration word information library, the vehicle is determined to be in target mode; if the preset configuration word information is included in the vehicle's preset configuration word information library, the vehicle is determined to be in non-target mode. Thus, whether the vehicle is in target mode can be determined based on whether the preset configuration word information is included in the preset configuration word information library.

[0104] In this application, the method for driving the low-frequency chip is only executed when the vehicle is in target mode to avoid the driver chip being damaged by a sudden large current. When the vehicle is in non-target mode, the door wiring harness remains in a conductive state, so it does not generate a door closing signal and therefore does not trigger the subsequent low-frequency chip to execute the key search strategy. When the vehicle is in non-target mode, a door closing signal is only generated when a door actually closes, triggering the subsequent low-frequency chip to execute the key search strategy. However, since a real door closing does not generate a sudden large current, there is no need to delay the triggering of the low-frequency chip to execute the key search strategy.

[0105] In some embodiments, the method further includes:

[0106] In response to receiving the instruction that the vehicle has rolled off the production line, the current operating mode of the vehicle is switched from target mode to non-target mode, the preset configuration word information is written into the preset configuration word information database, and an instruction to release the prohibition of executing the key search strategy is sent to the low-frequency chip.

[0107] Specifically, when an instruction is received that the vehicle has rolled off the production line, the vehicle's current operating mode is switched from target mode to non-target mode, and the preset configuration word information is written into the preset configuration word information database. At this time, the vehicle switches from target mode to non-target mode.

[0108] When the vehicle is in non-target mode, the door wiring harness remains continuously conductive, therefore it does not generate a door closing signal and thus does not trigger the subsequent low-frequency chip to execute the key search strategy. In non-target mode, a door closing signal is only generated when a door actually closes, triggering the subsequent low-frequency chip to execute the key search strategy. However, a genuine door closing does not generate a large instantaneous current, so there is no need to delay triggering the low-frequency chip to execute the key search strategy. Therefore, a command to disallow the key search strategy is sent to the low-frequency chip. At this point, the vehicle controller can trigger the low-frequency chip to execute the key search strategy upon receiving the door closing signal, ensuring the normal operation of the vehicle's keyless entry and start system.

[0109] In some embodiments, the method for driving a low-frequency chip provided in this application is further described using the target mode as the factory mode. The method includes:

[0110] 1. Since the instantaneous large current generated by hot-plugging is instantaneous and will not exceed 200ms, if the low-frequency chip is in the non-start mode during this period, even if there is a large current injection during hot-plugging, it will not cause the low-frequency chip to break down and fail.

[0111] 2. New Functional Mode: In factory mode, the low-frequency chip will be delayed by 1 second (i.e., a preset time period) to trigger the key-finding function, or the key-finding function will be disabled when the door is closed in factory mode, or all key-finding functions will be disabled in factory mode (control logic for powering on directly without key finding in factory mode needs to be reserved). This avoids the instantaneous high current generated by the door installation when driving the low-frequency chip. After exiting factory mode, the normal key-finding logic will be restored.

[0112] 3. The factory mode is determined by checking whether there is an anti-theft configuration word (i.e., preset configuration word information). If the anti-theft configuration word exists, it is determined that it is not the factory mode; if the anti-theft configuration word does not exist, it is determined that it is the factory mode.

[0113] This application can effectively prevent low-frequency chips from being damaged due to instantaneous high current injection during the factory off-line stage, which would lead to the failure of the PEPS function.

[0114] It should be noted that the method in this embodiment can be executed by a single device, such as a computer or server. The method can also be applied in a distributed scenario, where multiple devices cooperate to complete the task. In such a distributed scenario, one of these devices may execute only one or more steps of the method in this embodiment, and the multiple devices will interact with each other to complete the method described.

[0115] It should be noted that some embodiments of this application have been described above. In some cases, the actions or steps described in the above embodiments can be performed in a different order than that shown in the above embodiments and the desired result can still be achieved. In addition, the processes depicted in the accompanying drawings do not necessarily require a specific or sequential order to achieve the desired result. In some embodiments, multitasking and parallel processing are also possible or may be advantageous.

[0116] Based on the same inventive concept, corresponding to any of the above embodiments, this application also provides a device for driving a low-frequency chip. The device is implemented based on a vehicle door wiring harness assembly, which includes a body connection terminal disposed on the vehicle body, a door connection terminal disposed on the door, and a door wiring harness. One end of the door wiring harness is connected to the door connection terminal, and the other end of the door wiring harness is used to connect to the body connection terminal.

[0117] See Figure 2 The device includes:

[0118] The acquisition module 100 is configured to acquire the connection status of the door wiring harness and the body connection terminal in response to determining that the vehicle is in the target mode.

[0119] The execution module 200 is configured to, in response to the connection status being connected, send a command to the low-frequency chip to prohibit the execution of the key search strategy or to control the low-frequency chip of the vehicle to execute the key search strategy after a preset period of time.

[0120] In some embodiments, the execution module 200 is further configured to:

[0121] In response to the connection status being "connected", the power status of the vehicle is obtained;

[0122] In response to the power state being "power-on", a command is sent to the low-frequency chip to prohibit the execution of the key search strategy, or the low-frequency chip of the vehicle is controlled to execute the key search strategy after a preset period of time.

[0123] In some embodiments, the execution module 200 is further configured to:

[0124] Obtain the initial current value on the door wiring harness;

[0125] In response to the initial current value being greater than a first preset value, a strategy to prohibit the execution of the key lookup is sent to the low-frequency chip.

[0126] In response to the initial current value being greater than a second preset value and less than or equal to a first preset value, the low-frequency chip of the vehicle is controlled to execute a key search strategy after a preset time period.

[0127] Wherein, the second preset value is less than the first preset value.

[0128] In some embodiments, the execution module 200 is further configured to:

[0129] In response to the initial current value being greater than a second preset value and less than or equal to a third preset value, the low-frequency chip of the vehicle is controlled to execute a key search strategy after a first preset time period.

[0130] In response to the initial current value being greater than a third preset value and less than or equal to a first preset value, the low-frequency chip of the vehicle is controlled to execute a key search strategy after a second preset time period.

[0131] Wherein, the third preset value is greater than the second preset value and less than the first preset value, and the first preset time period is less than the second preset time period.

[0132] In some embodiments, the execution module 200 is further configured to:

[0133] After the preset time period, the current value on the door wiring harness is acquired in real time;

[0134] In response to the current value being less than or equal to a second preset value, the low-frequency chip controlling the vehicle executes a key-finding strategy.

[0135] In some embodiments, the execution module 200 is further configured to:

[0136] Determine whether the vehicle's preset configuration word information database includes preset configuration word information;

[0137] If the preset configuration word information is not found in the preset configuration word information database, then the vehicle is determined to be in the target mode;

[0138] If the preset configuration word information is included in the vehicle's preset configuration word information database, then the vehicle is determined to be in a non-target mode.

[0139] In some embodiments, the execution module 200 is further configured to:

[0140] In response to receiving the instruction that the vehicle has rolled off the production line, the current operating mode of the vehicle is switched from target mode to non-target mode, the preset configuration word information is written into the preset configuration word information database, and an instruction to release the prohibition of executing the key search strategy is sent to the low-frequency chip.

[0141] For ease of description, the above devices are described in terms of function, divided into various modules. Of course, in implementing this application, the functions of each module can be implemented in one or more software and / or hardware.

[0142] The apparatus of the above embodiments is used to implement the corresponding method for driving low-frequency chips in any of the foregoing embodiments, and has the beneficial effects of the corresponding method embodiments, which will not be repeated here.

[0143] Based on the same inventive concept, corresponding to the methods of any of the above embodiments, this application also provides an electronic device, including a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor executes the program to implement the method of driving a low-frequency chip as described in any of the above embodiments.

[0144] Figure 3 This embodiment illustrates a more specific hardware structure of an electronic device, which may include a processor 1010, a memory 1020, an input / output interface 1030, a communication interface 1040, and a bus 1050. The processor 1010, memory 1020, input / output interface 1030, and communication interface 1040 are interconnected internally via the bus 1050.

[0145] The processor 1010 can be implemented using a general-purpose CPU (Central Processing Unit), microprocessor, application-specific integrated circuit (ASIC), or one or more integrated circuits, and is used to execute relevant programs to implement the technical solutions provided in the embodiments of this specification.

[0146] The memory 1020 can be implemented in the form of ROM (Read Only Memory), RAM (Random Access Memory), static storage device, dynamic storage device, etc. The memory 1020 can store the operating system and other applications. When the technical solutions provided in the embodiments of this specification are implemented by software or firmware, the relevant program code is stored in the memory 1020 and is called and executed by the processor 1010.

[0147] The input / output interface 1030 is used to connect input / output modules to realize information input and output. Input / output modules can be configured as components within the device (not shown in the figure) or externally connected to the device to provide corresponding functions. Input devices may include keyboards, mice, touchscreens, microphones, various sensors, etc., while output devices may include displays, speakers, vibrators, indicator lights, etc.

[0148] The communication interface 1040 is used to connect a communication module (not shown in the figure) to enable communication between this device and other devices. The communication module can communicate via wired means (such as USB, Ethernet cable, etc.) or wireless means (such as mobile network, WIFI, Bluetooth, etc.).

[0149] Bus 1050 includes a pathway for transmitting information between various components of the device, such as processor 1010, memory 1020, input / output interface 1030, and communication interface 1040.

[0150] It should be noted that although the above-described device only shows the processor 1010, memory 1020, input / output interface 1030, communication interface 1040, and bus 1050, in specific implementations, the device may also include other components necessary for normal operation. Furthermore, those skilled in the art will understand that the above-described device may only include the components necessary for implementing the embodiments of this specification, and not necessarily all the components shown in the figures.

[0151] The electronic devices described above are used to implement the corresponding methods for driving low-frequency chips in any of the foregoing embodiments, and have the beneficial effects of the corresponding method embodiments, which will not be repeated here.

[0152] Based on the same inventive concept, corresponding to the methods of any of the above embodiments, this application also provides a non-transitory computer-readable storage medium storing computer instructions for causing the computer to execute the method of driving a low-frequency chip as described in any of the above embodiments.

[0153] The computer-readable medium of this embodiment includes permanent and non-permanent, removable and non-removable media, and information storage can be implemented by any method or technology. 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, CD-ROM, digital versatile optical disc (DVD) or other optical storage, magnetic tape, magnetic disk storage or other magnetic storage devices, or any other non-transfer medium that can be used to store information accessible by a computing device.

[0154] The computer instructions stored in the storage medium of the above embodiments are used to cause the computer to execute the method of driving the low-frequency chip as described in any of the above embodiments, and have the beneficial effects of the corresponding method embodiments, which will not be repeated here.

[0155] Based on the same inventive concept, corresponding to any of the above embodiments, this application also provides a computer program product, including computer program instructions. When the computer program instructions are run on a computer, the computer executes the method for driving a low-frequency chip as described in any of the above embodiments, and has the beneficial effects of the corresponding method embodiments, which will not be repeated here.

[0156] Based on the same inventive concept, and corresponding to the methods of any of the above embodiments, this application also provides a vehicle, including the apparatus, electronic device, computer-readable medium, and computer program product described in any of the above embodiments. The vehicle possesses the technical effects described in any of the above embodiments, which will not be elaborated upon here.

[0157] It is understood that before using the technical solutions of the various embodiments in this disclosure, users will be informed of the type, scope of use, and usage scenarios of the personal information involved in an appropriate manner, and user authorization will be obtained.

[0158] For example, upon receiving a user's active request, a prompt message is sent to the user to explicitly inform them that the requested operation will require the acquisition and use of the user's personal information. This allows the user to independently choose, based on the prompt message, whether to provide personal information to the software or hardware such as electronic devices, applications, servers, or storage media performing the operations of this disclosed technical solution.

[0159] As an optional but not limited implementation, in response to a user's active request, sending a prompt message to the user can be done via a pop-up window, where the prompt message can be presented in text format. Furthermore, the pop-up window can also include a selection control allowing the user to choose "agree" or "disagree" to provide personal information to the electronic device.

[0160] It is understood that the above notification and user authorization process are merely illustrative and do not constitute a limitation on the implementation of this disclosure. Other methods that comply with relevant laws and regulations may also be applied to the implementation of this disclosure.

[0161] Those skilled in the art should understand that the discussion of any of the above embodiments is merely exemplary and is not intended to imply that the scope of this application is limited to these examples; under the concept of this 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 variations of different aspects of the embodiments of this application as described above, which are not provided in detail for the sake of brevity.

[0162] Additionally, to simplify the description and discussion, and to avoid obscuring the embodiments of this application, the well-known power / ground connections to integrated circuit (IC) chips and other components may or may not be shown in the provided drawings. Furthermore, the apparatus may be shown in block diagram form to avoid obscuring the embodiments of this application, and this also takes into account the fact that the details of the implementation of these block diagram apparatuses are highly dependent on the platform on which the embodiments of this application will be implemented (i.e., these details should be fully understood by those skilled in the art). While specific details (e.g., circuits) have been set forth to describe exemplary embodiments of this application, it will be apparent to those skilled in the art that the embodiments of this application can be implemented without these specific details or with variations thereof. Therefore, these descriptions should be considered illustrative rather than restrictive.

[0163] Although this application has been described in conjunction with specific embodiments thereof, many substitutions, modifications, and variations of these embodiments will be apparent to those skilled in the art from the foregoing description. For example, other memory architectures (e.g., dynamic RAM (DRAM)) may be used with the embodiments discussed.

[0164] The embodiments of this application are intended to cover all such substitutions, modifications, and variations that fall within the broad scope of this application. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the embodiments of this application should be included within the protection scope of this application.

Claims

1. A method of driving a low frequency chip, characterized by, The method is performed based on a vehicle door wire harness assembly, the vehicle door wire harness assembly comprising a vehicle body connecting end arranged on a vehicle body, a vehicle door connecting end arranged on a vehicle door, and a vehicle door wire harness, one end of the vehicle door wire harness being connected with the vehicle door connecting end, and the other end of the vehicle door wire harness being used for being connected with the vehicle body connecting end; The method comprises: in response to determining that the vehicle is in a target mode, acquiring a connection state of the vehicle door wire harness and the vehicle body connecting end; wherein the target mode is a factory mode of the vehicle, and the factory mode represents that the vehicle is in a production process; in response to the connection state being connected, sending an instruction of prohibiting the low-frequency chip from executing the key search strategy or controlling the low-frequency chip of the vehicle to execute the key search strategy after a preset time period, comprising: in response to the connection state being connected, acquiring a power state of the vehicle; in response to the power state being a power-on state, sending the instruction of prohibiting the low-frequency chip from executing the key search strategy or controlling the low-frequency chip of the vehicle to execute the key search strategy after the preset time period; wherein the sending of the instruction of prohibiting the low-frequency chip from executing the key search strategy or the controlling of the low-frequency chip of the vehicle to execute the key search strategy after the preset time period comprises: acquiring an initial current value on the vehicle door wire harness; in response to the initial current value being greater than a first preset value, sending the instruction of prohibiting the low-frequency chip from executing the key search strategy; in response to the initial current value being greater than a second preset value and less than or equal to the first preset value, controlling the low-frequency chip of the vehicle to execute the key search strategy after the preset time period; wherein the second preset value is less than the first preset value.

2. The method of claim 1, wherein, the controlling of the low-frequency chip of the vehicle to execute the key search strategy after the preset time period comprises: in response to the initial current value being greater than the second preset value and less than or equal to a third preset value, controlling the low-frequency chip of the vehicle to execute the key search strategy after a first preset time period; in response to the initial current value being greater than the third preset value and less than or equal to the first preset value, controlling the low-frequency chip of the vehicle to execute the key search strategy after a second preset time period; wherein the third preset value is greater than the second preset value and less than the first preset value, and the first preset time period is less than the second preset time period.

3. The method of claim 1, wherein, the controlling of the low-frequency chip of the vehicle to execute the key search strategy after the preset time period comprises: after the preset time period, acquiring a current value on the vehicle door wire harness in real time; in response to the current value being less than or equal to the second preset value, controlling the low-frequency chip of the vehicle to execute the key search strategy.

4. The method of claim 1, wherein, The method further comprises: determining whether preset configuration word information is included in a preset configuration word information library of the vehicle; in response to the preset configuration word information not being included in the preset configuration word information library, determining that the vehicle is in the target mode; in response to the preset configuration word information being included in the preset configuration word information library of the vehicle, determining that the vehicle is in a non-target mode.

5. The method of claim 1, wherein, The method further comprises: in response to receiving an instruction that the vehicle has been completely off the line, switching a current operation mode of the vehicle from the target mode to the non-target mode, writing the preset configuration word information into the preset configuration word information library, and sending an instruction of canceling the prohibition of the low-frequency chip from executing the key search strategy.

6. An apparatus for driving a low-frequency chip, characterized in that the apparatus is based on a vehicle door wiring harness assembly, the vehicle door wiring harness assembly comprising a vehicle body connecting end arranged on a vehicle body, a vehicle door connecting end arranged on a vehicle door, and a vehicle door wiring harness, one end of the vehicle door wiring harness being connected to the vehicle door connecting end, and the other end of the vehicle door wiring harness being used for connecting to the vehicle body connecting end. The apparatus comprises: an acquisition module configured to acquire a connection state of the vehicle door wiring harness and the vehicle body connecting end in response to determining that the vehicle is in a target mode; wherein the target mode is a factory mode of the vehicle, and the factory mode represents that the vehicle is in a production process; an execution module configured to, in response to the connection state being connected, send an instruction to the low-frequency chip to prohibit the execution of a find key strategy or control the low-frequency chip of the vehicle to execute the find key strategy after a preset time period, including: in response to the connection state being connected, acquiring a power state of the vehicle; and in response to the power state being a power-on state, sending an instruction to the low-frequency chip to prohibit the execution of the find key strategy or controlling the low-frequency chip of the vehicle to execute the find key strategy after a preset time period; wherein the sending of the instruction to the low-frequency chip to prohibit the execution of the find key strategy or the controlling of the low-frequency chip of the vehicle to execute the find key strategy after a preset time period comprises: acquiring an initial current value on the vehicle door wiring harness; in response to the initial current value being greater than a first preset value, sending an instruction to the low-frequency chip to prohibit the execution of the find key strategy; and in response to the initial current value being greater than a second preset value and less than or equal to the first preset value, controlling the low-frequency chip of the vehicle to execute the find key strategy after a preset time period; wherein the second preset value is less than the first preset value.

7. An electronic device comprising a memory, a processor, and a computer program stored on the memory and running on the processor, characterized in that, The processor implements the method of any one of claims 1 to 5 when executing the program.

8. A vehicle comprising the apparatus of claim 6 or the electronic device of claim 7.

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