Method and device for driving low-frequency chip, electronic equipment and vehicle

Abstract

The invention provides a method and device for driving a low-frequency chip, electronic equipment and a vehicle. The method comprises the steps that when it is determined that the vehicle is in a target mode, the connecting state of a vehicle door wire harness and a vehicle body connecting end is obtained, when it is determined that the connecting state is connected, a door closing signal can be generated, and meanwhile instant large current can be generated through conduction of the vehicle door wire harness. After the vehicle control unit obtains the door closing signal, the instruction for prohibiting execution of the key searching strategy is sent to the low-frequency chip to prohibit starting of the low-frequency chip, so that instant large current generated by conduction of the vehicle door wire harness cannot flow through the low-frequency chip, breakdown of the low-frequency chip cannot be caused, and the safety of the vehicle door is improved. Or after the preset time period is delayed, the low-frequency chip of the vehicle is controlled to execute the key searching strategy, in this way, the instant large current generated by conduction of the vehicle door wire harness disappears after the preset time period, the low-frequency chip is controlled to execute the key searching strategy, breakdown of the low-frequency chip cannot be caused, and the safety of the low-frequency chip is improved.

Description

Technical Field

[0001] The present application relates to the field of vehicle technology, and in particular to a method, device, electronic device and vehicle for driving a low-frequency chip. Background Art

[0002] The process of the door harness connecting the body connection end and the door connection end is usually carried out when the vehicle controller is powered on, that is, the connection process between the door harness and the body connection end is hot plugging. Hot plugging will generate a transient large current, and if this transient large 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 normally. Summary of the invention

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

[0004] Based on the above purpose, the first aspect of the present application provides a method for driving a low-frequency chip, the method is performed based on a vehicle door harness assembly, the vehicle door harness assembly includes a body connection end arranged on the body, a door connection end arranged on the door, and a door harness, one end of the door harness is connected to the door connection end, and the other end of the door harness is used to connect to the body connection end;

[0005] The method comprises:

[0006] In response to determining that the vehicle is in the target mode, obtaining a connection state between the door wiring harness and the vehicle body connection terminal;

[0007] In response to the connection status being connected, a prohibition instruction for executing the key-finding strategy is sent to the low-frequency chip, or the low-frequency chip of the vehicle is controlled to execute the key-finding strategy after a preset period of time.

[0008] Optionally, in response to the connection state being connected, sending a prohibition instruction to the low-frequency chip to execute the key search strategy or controlling the low-frequency chip of the vehicle to execute the key search strategy after a preset period of time includes:

[0009] In response to the connection status being connected, obtaining a power status of the vehicle;

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

[0011] Optionally, the sending of a prohibition instruction to the low-frequency chip to execute 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 includes:

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

[0013] In response to the initial current value being greater than a first preset value, sending a prohibition on executing a key search strategy 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 the first preset value, controlling the low-frequency chip of the vehicle to execute a key search strategy after a preset period of time;

[0015] The second preset value is smaller than the first preset value.

[0016] Optionally, the controlling the low-frequency chip of the vehicle to execute the key search strategy after a preset period of time 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, controlling the low-frequency chip of the vehicle to execute a key search strategy after a first preset period of time;

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

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

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

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

[0022] In response to the current value being less than or equal to the second preset value, the low-frequency chip of the vehicle is controlled to execute a key search strategy.

[0023] Optionally, it also includes:

[0024] Determining whether the preset configuration word information library of the vehicle includes the preset configuration word information;

[0025] In response to the preset configuration word information library not including the preset configuration word information, determining that the vehicle is in a target mode;

[0026] In response to the preset configuration word information being included in the preset configuration word information library of the vehicle, it is determined that the vehicle is in the non-target mode.

[0027] Optionally, the method further comprises:

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

[0029] A second aspect of the present application provides a device for driving a low-frequency chip, the device being implemented based on a vehicle door harness assembly, the vehicle door harness assembly comprising a vehicle body connection end provided on the vehicle body, a door connection end provided on the vehicle door, and a door harness, one end of the door harness being connected to the door connection end, and the other end of the door harness being used to be connected to the vehicle body connection end;

[0030] The device comprises:

[0031] an acquisition module configured to acquire a connection state between the door harness and the vehicle body connection terminal in response to determining that the vehicle is in the target mode;

[0032] The execution module is configured to send a prohibition instruction for executing the key search strategy to the low frequency chip in response to the connection state being connected, 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 the present application provides an electronic device, including a memory, a processor, and a computer program stored in the memory and running on the processor, wherein when the processor executes the program, the method described in any one of the first aspects above is implemented.

[0034] A fourth aspect of the present application provides a vehicle, the vehicle comprising the device described in the second aspect or the electronic device described in the third aspect.

[0035] From the above, it can be seen that the method, device, electronic device and vehicle for driving the low-frequency chip provided by the present application, when it is determined that the vehicle is in the target mode, obtains the connection status of the door harness and the vehicle body connection terminal, and 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 harness will generate a momentary large current. After the vehicle controller obtains the door closing signal, it sends a prohibition command to the low-frequency chip to prohibit the start of the low-frequency chip, so that the momentary large current generated by the conduction of the door harness will not flow through the low-frequency chip, and will not cause the breakdown of the low-frequency chip. Alternatively, when the vehicle controller obtains the door closing signal, it controls the vehicle's low-frequency chip to execute the key search strategy after a preset period of time. 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 vehicle's 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 period of time. At this time, controlling the vehicle's low-frequency chip to execute the key search strategy will not cause the low-frequency chip to break down. In this way, the low-frequency chip can continue to be controlled to execute the key search strategy to test the vehicle's keyless entry and starting system. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] In order to more clearly illustrate the technical solutions in the present application or related technologies, the drawings required for use in the embodiments or related technical descriptions are briefly introduced below. Obviously, the drawings described below are only embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0037] Figure 1 A schematic flow chart of a method for driving a low-frequency chip according to an embodiment of the present application;

[0038] Figure 2 A schematic diagram of a device for driving a low-frequency chip according to an embodiment of the present application;

[0039] Figure 3 A schematic diagram of an electronic device according to an embodiment of the present application. DETAILED DESCRIPTION

[0040] In order to make the objectives, technical solutions and advantages of the present application more clearly understood, the present application is further described in detail below in combination with specific embodiments and with reference to the accompanying drawings.

[0041] It should be noted that, unless otherwise defined, the technical terms or scientific terms used in the embodiments of the present application should be the usual meanings understood by people with ordinary skills in the field to which the present application belongs. The "first", "second" and similar words used in the embodiments of the present application do not represent any order, quantity or importance, but are only used to distinguish different components. "Including" or "comprising" and similar words mean that the elements or objects appearing in front of the word cover the elements or objects listed after the word and their equivalents, without excluding other elements or objects. "Connect" or "connected" and similar words are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. "Up", "down", "left", "right" and the like are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0042] The working mode of the vehicle includes a factory mode and a non-factory mode, wherein the factory mode represents that the vehicle is in the production process. When the vehicle is in the factory mode, the door installation stage is basically carried out when the vehicle controller is powered on.

[0043] There is a door harness connected between the car body and the door to transmit electrical energy and electrical signals. During the door installation stage, one end of the door harness is usually connected to the door connection end first, and then the other end of the control door harness is connected to the body connection end. When the other end of the door harness is connected to the body connection end, the door harness connects the body connection end and the door connection end, realizing an operation similar to closing the door and sending a signal that the door is closed.

[0044] The vehicle's keyless entry and start system (PEPS) includes a low-frequency chip and a plurality of low-frequency antennas that control the low-frequency chip. The low-frequency chip generally refers to a controller or a low-frequency receiver for the keyless entry and start system.

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

[0046] As mentioned above, when the other end of the door wiring harness is connected to the vehicle body connection end, the door wiring harness connects the vehicle body connection end and the door connection end, realizing an operation similar to closing the door, and sending a signal that the door is closed. At this time, when the vehicle controller receives the signal that the door is closed, it will immediately trigger the low-frequency chip, causing the low-frequency chip to drive the low-frequency antenna to execute the key search strategy to determine the location of the car key, and then perform the operation of locking away from the vehicle or unlocking near the vehicle.

[0047] However, since the process of connecting the body connection end and the door connection end by the door harness is usually carried out when the vehicle controller is powered on, that is, the connection process between the door harness and the body connection end is hot plug (hot plug is powered plug, which means that without turning off the system power, modules, boards, wiring harnesses, etc. are inserted or unplugged into the system without affecting the normal operation of the system, thereby improving the system's reliability, rapid maintainability, redundancy and timely recovery capabilities to disasters, etc.), hot plug will generate instantaneous large current, and if this instantaneous large 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 normally, and then cause the keyless entry and starting system to fail.

[0048] Based on this, how to prevent low-frequency chips from being broken down by instantaneous current generated by hot plugging of door wiring harnesses is an issue that needs to be solved urgently.

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

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

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

[0052] Step S100, in response to determining that the vehicle is in the target mode, obtaining a connection state between the door wiring harness and the vehicle body connection end;

[0053] Step S200: In response to the connection status being connected, sending a prohibition instruction for executing the key search strategy to the low-frequency chip or controlling the low-frequency chip of the vehicle to execute the key search strategy after a preset period of time.

[0054] Specifically, the target mode may be a factory mode of the vehicle, and the factory mode represents that the vehicle is in a production process.

[0055] When the vehicle is in target mode, the door installation stage is basically carried out when the vehicle controller is powered on. There is a door harness connected between the body and the door of the car to transmit electrical energy and electrical signals. During the door installation stage, one end of the door harness is usually connected to the door connection end first, and then the other end of the control door harness is connected to the body connection end. When the other end of the door harness is connected to the body connection end, the door harness conducts the body connection end and the door connection end. Since the vehicle controller is always powered on, the conduction of the door harness will generate a large instantaneous current.

[0056] Therefore, in the present application, when it is determined that the vehicle is in target mode, the connection status between the door harness and the vehicle body connection terminal is obtained, and 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 harness will generate a momentary large current.

[0057] When the vehicle controller obtains the door closing signal, it sends a command to prohibit the execution of the key search strategy to the low-frequency chip to prohibit the start-up of the low-frequency chip. In this way, the instantaneous large current generated by the conduction of the door wiring harness will not flow through the low-frequency chip, and will not cause the low-frequency chip to break down.

[0058] Alternatively, when the vehicle controller obtains the door closing signal, it controls the vehicle's low-frequency chip to execute the key search strategy after a preset period of time. 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 prior art. Instead, the low-frequency chip of the vehicle is controlled to execute the key search strategy after a preset period of time. In this way, the instantaneous large current generated by the conduction of the door harness has disappeared after the preset period of time. At this time, controlling the vehicle's low-frequency chip to execute the key search strategy will not cause the breakdown of the low-frequency chip. In this way, 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.

[0059] The preset period is a time period in which the preset instantaneous high current has disappeared, and is set based on the duration of the instantaneous high current generated by the conduction of the door harness. The preset period is greater than the duration of the instantaneous high current generated by the conduction of the door harness.

[0060] Exemplarily, if the duration of the instantaneous large current generated by the conduction of the gate harness is no more than 200ms, then the preset period may be 250ms; if the duration of the instantaneous large current generated by the conduction of the gate harness is no more than 250ms, then the preset period may be 300ms.

[0061] In the present application, when it is determined that the vehicle is in the target mode, the connection status of the door harness and the vehicle body connection end is obtained. When it is determined that the connection status is connected, a door closing signal is generated, and the conduction of the door harness will generate a momentary large current. When the vehicle controller obtains the door closing signal, it sends a prohibition instruction to the low-frequency chip to prohibit the start-up of the low-frequency chip, so that the momentary large current generated by the conduction of the door harness will not flow through the low-frequency chip, and will not cause the breakdown of the low-frequency chip. Alternatively, when the vehicle controller obtains the door closing signal, the low-frequency chip of the vehicle is controlled to execute the key search strategy after a preset period of time. At this time, the low-frequency chip is not prohibited from executing the key search strategy, and the low-frequency chip of the vehicle is not immediately controlled to execute the key search strategy as in the existing method, but the low-frequency chip of the vehicle is controlled to execute the key search strategy after a delay of a preset period of time. In this way, after the preset period of time, the instantaneous large current generated by the conduction of the door wiring harness has disappeared. At this time, the low-frequency chip that controls the vehicle to execute the key-finding strategy will not cause the low-frequency chip to break down. In this way, the low-frequency chip can continue to be controlled to execute the key-finding strategy to test the vehicle's keyless entry and starting system.

[0062] In some embodiments, in response to the connection state being connected, step S200 sends a prohibition instruction to the low-frequency chip to execute the key search strategy or controls the low-frequency chip of the vehicle to execute the key search strategy after a preset period of time, including:

[0063] In response to the connection status being connected, obtaining a power status of the vehicle;

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

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

[0066] When it is determined that the power state is the power-on state, it is determined that the connection process between the door wiring harness and the vehicle body connection end is hot plug (hot plug is powered plug, which means that without turning off the system power, modules, boards, wiring harnesses, etc. are inserted or unplugged into the system without affecting the normal operation of the system, thereby improving the system's reliability, rapid maintainability, redundancy and timely disaster recovery capabilities, etc.). Hot plug will generate a momentary large current, and if this momentary large 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 normally.

[0067] Therefore, when it is determined that the power state is the power-on state, that is, when it is determined that the connection process between the door wiring harness and the vehicle body connection end is hot plugged, the conduction of the door wiring harness will generate an instantaneous large current. At this time, an instruction prohibiting the execution of the key search strategy is sent to the low-frequency chip, or the vehicle's low-frequency chip is controlled to execute the key search strategy after a preset period of time to ensure that the low-frequency chip will not be broken down under the action of the instantaneous large current, thereby improving the safety of the low-frequency chip.

[0068] In the present 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 in a powered-on state. Only when the vehicle's power supply and vehicle control are in a powered-on state will the conduction of 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 to ensure that the low-frequency chip will not break down under the action of the momentary large current, thereby improving the safety of the low-frequency chip.

[0069] In some embodiments, the step S200 sends a command to the low-frequency chip to prohibit the execution of the key search strategy or controls the low-frequency chip of the vehicle to execute the key search strategy after a preset period of time, including:

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

[0071] In response to the initial current value being greater than a first preset value, sending a prohibition instruction for executing a key search strategy 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 the first preset value, controlling the low-frequency chip of the vehicle to execute a key search strategy after a preset period of time;

[0073] The second preset value is smaller than the first preset value.

[0074] Specifically, an initial current value on the door wiring harness is obtained, wherein the initial current value is the current value generated when the door wiring harness starts to be turned on, and the initial current value is the largest of all current values ​​generated after the door wiring harness is turned on. After the door wiring harness is turned on, 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 the present 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 initial current value is judged to determine whether 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, which can greatly improve the safety of subsequent control strategies.

[0076] Furthermore, when the initial current value is greater than the first preset value, the initial current value is very large, so it is impossible to determine when the instantaneous large current generated after the door harness is turned on will disappear. If the low-frequency chip of the vehicle is rashly controlled to execute the key-finding strategy after the preset period, the low-frequency chip may still be broken down by the instantaneous large current. Therefore, when the initial current value is very large, a command prohibiting the execution of the key-finding strategy is directly sent to the low-frequency chip to ensure that the low-frequency chip will not be triggered to start, thereby fundamentally avoiding the low-frequency chip from being broken down 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. Therefore, the low-frequency chip of the vehicle can be controlled to execute the key search strategy after a preset period of time. In this way, the instantaneous large current generated by the conduction of the door wiring harness has disappeared after the preset period of time. At this time, controlling the low-frequency chip of the vehicle to execute the key search strategy will not cause the breakdown of the low-frequency chip. In this way, the low-frequency chip can continue to be controlled to execute the key search strategy to test the vehicle's keyless entry and starting system.

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

[0079] In the present application, different operations are controlled based on different initial current values. When the initial current value is very large, an instruction prohibiting the execution of the key search strategy is directly sent to the low-frequency chip. When the initial current value is relatively large, the vehicle's low-frequency chip is controlled to execute the key search strategy after a preset period of time. This can ensure that the low-frequency chip will not be broken down by instantaneous large currents, thereby improving the safety of the low-frequency chip.

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

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

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

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

[0085] Therefore, in the present 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, within the interval between the first preset value and the second preset value, the initial current value is the smaller current value within the interval. Therefore, the time taken for the initial current to disappear will be relatively short. Therefore, after a shorter first preset period, the low-frequency chip that controls the vehicle executes the key search strategy. In this way, it can be ensured that the initial current or the instantaneous large current disappears after the first preset period, and the low-frequency chip will not be broken down by the instantaneous large current. At the same time, the first preset period is shorter, that is, the delay time for the low-frequency chip that controls the vehicle to execute the key search strategy is shorter, which basically does 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, within the interval between the first preset value and the second preset value, the initial current value is a larger current value within the interval. Therefore, the time taken for the initial current to disappear will be relatively long. Therefore, after a longer second preset period of time, 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 the instantaneous large current disappears after the second preset period of time, ensuring that the low-frequency chip will not be broken down by the instantaneous large current.

[0088] The third preset value is greater than the second preset value and less than the first preset value. Furthermore, the third preset value may be an intermediate value within the interval between the first preset value and the second preset value.

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

[0090] In the present application, different delay preset periods are determined based on different initial current values. This ensures that the initial current or instantaneous high current disappears after the preset period and that the low-frequency chip will not be broken down by the instantaneous high current. At the same time, the delay time of the low-frequency chip that controls the vehicle to execute the key search strategy is different, so as not to affect the execution of subsequent key search strategies as much as possible.

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

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

[0093] In response to the current value being less than or equal to the second preset value, the low-frequency chip of the vehicle is controlled to execute a key search strategy.

[0094] Specifically, when the low-frequency chip controlling the vehicle executes the key search strategy after the preset period, the current value on the door harness can also be acquired in real time after the preset period. When it is determined that the current value on the door harness continues to decrease from the initial current value until the current value is less than or equal to the second preset value, it means that the current value is small at this time and the normal current value is restored. After the small current value flows through the low-frequency chip, it will not cause the breakdown of the low-frequency chip. Therefore, the low-frequency chip controlling the vehicle executes the key search strategy at this time.

[0095] In the present application, by acquiring the current value on the door wiring harness in real time, when it is determined that the current value is less than or equal to a second preset value, the method of controlling the vehicle's low-frequency chip to execute a key search strategy 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 more accurate, but it consumes more energy for the vehicle.

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

[0097] Determining whether the preset configuration word information library of the vehicle includes the preset configuration word information;

[0098] In response to the preset configuration word information library not including the preset configuration word information, determining that the vehicle is in a target mode;

[0099] In response to the preset configuration word information being included in the preset configuration word information library of the vehicle, it is determined that the vehicle is in the non-target mode.

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

[0101] Determine whether the preset configuration word information library of the vehicle includes the preset configuration word information, wherein the preset configuration word information library is a preset information library containing all configuration words of the vehicle, and each configuration word represents a different function of the vehicle. Therefore, by determining whether the preset configuration word information library of the vehicle includes the preset configuration word information, the current working mode of the vehicle can be further determined.

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

[0103] When it is determined that the preset configuration word information is not included in the preset configuration word information library, it is determined that the vehicle is in the target mode; when the preset configuration word information library of the vehicle includes the preset configuration word information, it is determined that the vehicle is in the non-target mode. In this way, whether the vehicle is in the 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 entire method of driving the low-frequency chip is executed only when the vehicle is in target mode to prevent the driver chip from being broken down by instantaneous large current. When the vehicle is in non-target mode, the door harness is continuously in the on state, so the door harness will not generate a door closing signal, and will not trigger the subsequent low-frequency chip to execute the key search strategy. When the vehicle is in non-target mode, the door closing signal will only be generated when the real door is closed, which will trigger the subsequent low-frequency chip to execute the key search strategy. However, the real door closing will not generate an instantaneous large current, so 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 comprises:

[0106] In response to receiving an instruction that the vehicle has been offline, the current operating mode of the vehicle is switched from the target mode to the non-target mode, the preset configuration word information is written into the preset configuration word information library, and an instruction to lift 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 been offline, the current operating mode of the vehicle is switched from the target mode to the non-target mode, and the preset configuration word information is written into the preset configuration word information library. At this time, the vehicle is switched from the target mode to the non-target mode.

[0108] When the vehicle is in non-target mode, the door harness is continuously in the on state, so the door harness will not generate a door closing signal, and will not trigger the subsequent low-frequency chip to execute the key search strategy. When the vehicle is in non-target mode, the door closing signal will only be generated when the real door is closed, and the subsequent low-frequency chip will be triggered to execute the key search strategy. However, the real door closing will not generate a large instantaneous current, so there is no need to delay the triggering of the low-frequency chip to execute the key search strategy. Therefore, the command to cancel the prohibition of executing the key search strategy is sent to the low-frequency chip. At this time, the vehicle controller can trigger the low-frequency chip to execute the key search strategy after receiving the door closing signal, ensuring the normal implementation of the vehicle's keyless entry and starting system functions.

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

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

[0111] 2. New function mode: In factory mode, delay 1s (preset period) to trigger the low-frequency chip to drive the antenna to find the key, or disable the door-closing key-finding function in factory mode, or disable all key-finding functions in factory mode (the control logic of powering on directly without finding the key in factory mode needs to be reserved). In this way, the low-frequency chip driver is staggered to install the door to generate a large instantaneous current. After exiting the factory mode, the normal key-finding logic is restored.

[0112] 3. The factory mode is determined by detecting whether there is an anti-theft configuration word (ie, preset configuration word information). If there is an anti-theft configuration word, it is determined not to be the factory mode; if there is no anti-theft configuration word, it is determined to be the factory mode.

[0113] This application can effectively prevent the low-frequency chip from being broken down due to the instantaneous large current injected into the low-frequency chip during the factory offline stage, thereby causing the PEPS function to fail.

[0114] It should be noted that the method of the embodiment of the present application can be performed by a single device, such as a computer or server. The method of this embodiment can also be applied to a distributed scenario and completed by multiple devices cooperating with each other. In the case of such a distributed scenario, one of the multiple devices can only perform one or more steps in the method of the embodiment of the present application, and the multiple devices will interact with each other to complete the described method.

[0115] It should be noted that some embodiments of the present application are described above. In some cases, the actions or steps recorded in the above embodiments can be performed in an order different from that in the above embodiments and still achieve the desired results. In addition, the process depicted in the accompanying drawings does not necessarily require the specific order or continuous order shown to achieve the desired results. 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-mentioned embodiments and methods, the present application also provides a device for driving a low-frequency chip. The device is executed based on a vehicle door harness assembly, the vehicle door harness assembly includes a vehicle body connection end provided on the vehicle body, a door connection end provided on the vehicle door, and a door harness, one end of the door harness is connected to the door connection end, and the other end of the door harness is used to connect to the vehicle body connection end;

[0117] See also Figure 2 , the device comprises:

[0118] The acquisition module 100 is configured to acquire the connection state between the door harness and the vehicle body connection terminal in response to determining that the vehicle is in the target mode;

[0119] The execution module 200 is configured to send a prohibition instruction for executing the key search strategy to the low frequency chip in response to the connection status being connected, 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, obtaining a power status of the vehicle;

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

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

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

[0125] In response to the initial current value being greater than a first preset value, sending a prohibition on executing a key search strategy 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 the first preset value, controlling the low-frequency chip of the vehicle to execute a key search strategy after a preset period of time;

[0127] The second preset value is smaller 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, controlling the low-frequency chip of the vehicle to execute a key search strategy after a first preset period of time;

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

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

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

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

[0134] In response to the current value being less than or equal to the second preset value, the low-frequency chip of the vehicle is controlled to execute a key search strategy.

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

[0136] Determining whether the preset configuration word information library of the vehicle includes the preset configuration word information;

[0137] In response to the preset configuration word information library not including the preset configuration word information, determining that the vehicle is in a target mode;

[0138] In response to the preset configuration word information being included in the preset configuration word information library of the vehicle, it is determined that the vehicle is in the non-target mode.

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

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

[0141] For the convenience of description, the above device is described in terms of functions divided into various modules. Of course, when implementing the present application, the functions of each module can be implemented in the same or multiple software and / or hardware.

[0142] The device of the above embodiment is used to implement the corresponding method of driving the low-frequency chip in any of the above embodiments, and has the beneficial effects of the corresponding method embodiment, which will not be described in detail here.

[0143] Based on the same inventive concept, corresponding to any of the above-mentioned embodiments and methods, the present 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 when the processor executes the program, the method for driving the low-frequency chip as described in any of the above embodiments is implemented.

[0144] Figure 3 A more specific schematic diagram of the hardware structure of an electronic device provided in this embodiment is shown, and the device may include: a processor 1010, a memory 1020, an input / output interface 1030, a communication interface 1040, and a bus 1050. The processor 1010, the memory 1020, the input / output interface 1030, and the communication interface 1040 are connected to each other through the bus 1050 in the device.

[0145] The processor 1010 can be implemented by a general-purpose CPU (Central Processing Unit), a microprocessor, an 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 may be implemented in the form of ROM (Read Only Memory), RAM (Random Access Memory), static storage device, dynamic storage device, etc. The memory 1020 may store an operating system and other application programs. When the technical solutions provided in the embodiments of this specification are implemented by software or firmware, the relevant program codes are stored in the memory 1020 and are called and executed by the processor 1010.

[0147] The input / output interface 1030 is used to connect the input / output module to realize information input and output. The input / output module can be configured in the device as a component (not shown in the figure), or it can be externally connected to the device to provide corresponding functions. The input device may include a keyboard, a mouse, a touch screen, a microphone, various sensors, etc., and the output device may include a display, a speaker, a vibrator, an indicator light, etc.

[0148] The communication interface 1040 is used to connect a communication module (not shown) to realize communication interaction between the device and other devices. The communication module can realize communication through a wired mode (such as USB, network cable, etc.) or a wireless mode (such as mobile network, WIFI, Bluetooth, etc.).

[0149] The bus 1050 includes a path that transmits information between the various components of the device (eg, the processor 1010, the memory 1020, the input / output interface 1030, and the communication interface 1040).

[0150] It should be noted that, although the above device only shows the processor 1010, the memory 1020, the input / output interface 1030, the communication interface 1040 and the bus 1050, in the specific implementation process, the device may also include other components necessary for normal operation. In addition, it can be understood by those skilled in the art that the above device may also only include the components necessary for implementing the embodiments of the present specification, and does not necessarily include all the components shown in the figure.

[0151] The electronic device of the above embodiment is used to implement the corresponding method of driving the low-frequency chip in any of the above embodiments, and has the beneficial effects of the corresponding method embodiment, which will not be described in detail here.

[0152] Based on the same inventive concept, corresponding to any of the above-mentioned embodiment methods, the present application also provides a non-transitory computer-readable storage medium, wherein the non-transitory computer-readable storage medium stores computer instructions, and the computer instructions are used to enable 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, modules of programs, or other data. Examples of computer storage media include, but are not limited to, phase change memory (PRAM), static random access memory (SRAM), dynamic random access memory (DRAM), other types of random access memory (RAM), read-only memory (ROM), electrically erasable programmable read-only memory (EEPROM), flash memory or other memory technology, read-only compact disk read-only memory (CD-ROM), digital versatile disk (DVD) or other optical storage, magnetic cassettes, tape disk storage or other magnetic storage devices or any other non-transmission media that can be used to store information that can be accessed by a computing device.

[0154] The computer instructions stored in the storage medium of the above embodiment are used to enable 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-mentioned embodiments, the present 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, which has the beneficial effects of the corresponding method embodiments and will not be repeated here.

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

[0157] It is understandable that before using the technical solutions of each embodiment of the present disclosure, the type, scope of use, usage scenarios, etc. of the personal information involved will be informed to the user in an appropriate manner, and the user's authorization will be obtained.

[0158] For example, in response to receiving an active request from a user, a prompt message is sent to the user to clearly remind the user that the operation requested to be performed will require obtaining and using the user's personal information. Thus, the user can independently choose whether to provide personal information to software or hardware such as an electronic device, application, server, or storage medium that performs the operation of the technical solution of the present disclosure according to the prompt message.

[0159] As an optional but non-limiting implementation, in response to receiving the user's active request, the prompt information may be sent to the user in the form of a pop-up window, in which the prompt information may be presented in text form. In addition, the pop-up window may also carry a selection control for the user to choose "agree" or "disagree" to provide personal information to the electronic device.

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

[0161] A person skilled in the art should understand that the discussion of any of the above embodiments is merely illustrative and is not intended to imply that the scope of the present application is limited to these examples. In line with the concept of the present application, the technical features in the above embodiments or different embodiments may be combined, the steps may be implemented in any order, and there are many other variations of the different aspects of the embodiments of the present application as described above, which are not provided in detail for the sake of simplicity.

[0162] In addition, to simplify the description and discussion, and in order not to make the embodiments of the present application difficult to understand, the known power supply / ground connection with the integrated circuit (IC) chip and other components may or may not be shown in the provided drawings. In addition, the device can be shown in the form of a block diagram to avoid making the embodiments of the present application difficult to understand, and this also takes into account the fact that the details of the implementation of these block diagram devices are highly dependent on the platform to be implemented in the embodiments of the present application (that is, these details should be fully within the scope of understanding of those skilled in the art). In the case of elaborating specific details (e.g., circuits) to describe exemplary embodiments of the present application, it is obvious to those skilled in the art that the embodiments of the present application can be implemented without these specific details or when these specific details are changed. Therefore, these descriptions should be considered to be illustrative rather than restrictive.

[0163] Although the present application has been described in conjunction with specific embodiments of the present application, many replacements, 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 use the embodiments discussed.

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

Claims

1. A method for driving a low-frequency chip, characterized in that: The method is performed based on a vehicle door harness assembly, wherein the vehicle door harness assembly comprises a vehicle body connection end arranged on the vehicle body, a door connection end arranged on the vehicle door, and a door harness, wherein one end of the door harness is connected to the door connection end, and the other end of the door harness is used to be connected to the vehicle body connection end; The method comprises: In response to determining that the vehicle is in the target mode, obtaining a connection state between the door wiring harness and the vehicle body connection terminal; In response to the connection status being connected, a prohibition instruction for executing the key-finding strategy is sent to the low-frequency chip, or the low-frequency chip of the vehicle is controlled to execute the key-finding strategy after a preset period of time.

2. The method according to claim 1, characterized in that In response to the connection state being connected, sending a prohibition instruction to the low-frequency chip to execute the key search strategy or controlling the low-frequency chip of the vehicle to execute the key search strategy after a preset period of time includes: In response to the connection status being connected, obtaining a power status of the vehicle; In response to the power state being the power-on state, a command for prohibiting the execution of the key-finding strategy is sent to the low-frequency chip, or the low-frequency chip of the vehicle is controlled to execute the key-finding strategy after a preset period of time.

3. The method according to claim 1, characterized in that The step of sending a command to the low-frequency chip to prohibit the execution of the key search strategy or controlling the low-frequency chip of the vehicle to execute the key search strategy after a preset period of time includes: Obtaining an initial current value on the door wiring harness; In response to the initial current value being greater than a first preset value, sending a prohibition on executing a key search strategy to the low-frequency chip; 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 a key search strategy after a preset period of time; The second preset value is smaller than the first preset value.

4. The method according to claim 3, characterized in that: The method of controlling the low-frequency chip of the vehicle to execute the key search strategy after a preset period of time includes: In response to the initial current value being greater than a second preset value and less than or equal to a third preset value, controlling the low-frequency chip of the vehicle to execute a key search strategy after a first preset period of time; In response to the initial current value being greater than a third preset value and less than or equal to the first preset value, controlling the low-frequency chip of the vehicle to execute a key search strategy after a second preset period of time; The third preset value is greater than the second preset value and less than the first preset value, and the first preset period is less than the second preset period.

5. The method according to claim 3, characterized in that: The method of controlling the low-frequency chip of the vehicle to execute the key search strategy after a preset period of time includes: After the preset period of time, obtaining the current value on the door wiring harness in real time; In response to the current value being less than or equal to the second preset value, the low-frequency chip of the vehicle is controlled to execute a key search strategy.

6. The method according to claim 1, characterized in that The method further comprises: Determining whether the preset configuration word information library of the vehicle includes the preset configuration word information; In response to the preset configuration word information library not including the preset configuration word information, determining that the vehicle is in a target mode; In response to the preset configuration word information being included in the preset configuration word information library of the vehicle, it is determined that the vehicle is in the non-target mode.

7. The method according to claim 1, characterized in that The method further comprises: In response to receiving an instruction that the vehicle has been offline, the current operating mode of the vehicle is switched from the target mode to the non-target mode, the preset configuration word information is written into the preset configuration word information library, and an instruction to lift the prohibition of executing the key search strategy is sent to the low-frequency chip.

8. A device for driving a low-frequency chip, characterized in that the device is executed based on a vehicle door harness assembly, the vehicle door harness assembly comprises a vehicle body connection end arranged on the vehicle body, a door connection end arranged on the vehicle door, and a door harness, one end of the door harness is connected to the door connection end, and the other end of the door harness is used to connect to the vehicle body connection end; The device comprises: an acquisition module configured to acquire a connection state between the door harness and the vehicle body connection terminal in response to determining that the vehicle is in the target mode; The execution module is configured to send a prohibition instruction for executing the key search strategy to the low frequency chip in response to the connection state being connected, or to control the low frequency chip of the vehicle to execute the key search strategy after a preset period of time.

9. An electronic device comprising a memory, a processor, and a computer program stored in the memory and running on the processor, characterized in that: When the processor executes the program, the method according to any one of claims 1 to 7 is implemented.

10. A vehicle, comprising the device according to claim 8 or the electronic device according to claim 9.

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