Method and device for preventing electric leakage of switching circuit of electronic parking brake system

Abstract

The invention provides a method and device for preventing electric leakage of a switching circuit of an electronic parking brake system, and relates to the technical field of automobile switches. The method comprises the following steps: determining a first interface and a second interface of an internal circuit of the electronic parking brake system switch; the first interface and the second interface are connected with an electronic parking brake system; and an electronic element is connected in series with a circuit between the first interface and the second interface. The method and device for preventing electric leakage of the switching circuit of the electronic parking brake system are simple in structure, easy to implement and low in cost, and the risk of electric leakage of the switching circuit of the electronic parking brake system can be reduced.

Description

Technical Field

[0001] The present application relates to the technical field of automobile switches, and in particular to a method and a device for preventing leakage of a switch circuit of an electronic parking brake system. Background Art

[0002] With the rapid development of automotive electronic technology, the Electronic Parking Brake (EPB) system has become an important part of modern cars. The EPB system precisely controls the brake caliper through the electronic control unit (ECU) to achieve stable parking of the vehicle, greatly improving the convenience and safety of driving. However, the complexity and high integration of the EPB system also bring new challenges, one of which is the leakage problem of the switch circuit.

[0003] Leakage not only affects the normal operation of the EPB system, causing the brake function to fail or become abnormal, but may also pose a safety hazard to the driver and passengers, and even cause serious consequences such as fire. Therefore, studying and solving the leakage problem of the EPB switch circuit is of great significance to improving the safety and reliability of automotive electronic systems. At present, although there are many EPB systems and related circuit protection technologies on the market, there are still deficiencies in leakage detection and protection. Summary of the invention

[0004] The present application provides a method and device for preventing leakage of an electronic parking brake system switch circuit, so as to solve the defects of insufficient leakage detection and protection of the EPB switch circuit in the prior art.

[0005] In a first aspect, the present application provides a method for preventing leakage of a switch circuit of an electronic parking brake system, comprising: Determine a first interface and a second interface of an internal circuit of an electronic parking brake system switch; the first interface and the second interface are connected to the electronic parking brake system; An electronic component is connected in series in the circuit between the first interface and the second interface.

[0006] Optionally, the electronic component is used to increase circuit resistance.

[0007] Optionally, the electronic component is a resistor.

[0008] Optionally, the resistance is greater than 220 kilo-ohms.

[0009] Optionally, the current flow direction of the circuit between the first interface and the second interface is unidirectional.

[0010] Optionally, the method further comprises: Determine a third interface and a fourth interface of the internal circuit of the electronic parking brake system switch; the third interface and the fourth interface are connected to the electronic parking brake system; An electronic component is connected in series in the circuit between the third interface and the fourth interface.

[0011] In a second aspect, the present application further provides a device for preventing leakage of a switch circuit of an electronic parking brake system, comprising: A determination module, used to determine a first interface and a second interface of an internal circuit of an electronic parking brake system switch; the first interface and the second interface are connected to the electronic parking brake system; The circuit module is used to connect an electronic component in series in the circuit between the first interface and the second interface.

[0012] In a third aspect, the present application further provides an electronic device, comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor implements the method described in the first aspect when executing the program.

[0013] In a fourth aspect, the present application further provides a non-transitory computer-readable storage medium having a computer program stored thereon, which, when executed by a processor, implements the method described in the first aspect.

[0014] In a fifth aspect, the present application further provides a computer program product, comprising a computer program, which implements the method described in the first aspect when executed by a processor.

[0015] The method and device for preventing leakage of the switch circuit of an electronic parking brake system provided in the present application can reduce the risk of leakage of the EPB switch circuit by connecting a resistor in series in the internal circuit of the EPB switch. It has a simple structure, is easy to implement, and has a low cost. It can effectively avoid the harm caused by the reduction or damage of the diode resistance after long-term use of the EPB switch, which may affect the normal operation of the wire control brake system. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the present application or the prior art, a brief introduction will be given below to the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0017] Figure 1 It is a flow chart of a method for preventing leakage of a switch circuit of an electronic parking brake system provided by the present application; Figure 2 This is a circuit device architecture diagram for solving the leakage problem of the EPB switch circuit provided by the present application; Figure 3 It is a structural schematic diagram of a device for preventing leakage of a switch circuit of an electronic parking brake system provided by the present application; Figure 4 It is a structural schematic diagram of the electronic device provided by this application. DETAILED DESCRIPTION

[0018] In order to make the purpose, technical solutions and advantages of this application clearer, the technical solutions in this application will be clearly and completely described below in conjunction with the drawings in this application. Obviously, the described embodiments are part of the embodiments of this application, not all of them. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0019] Figure 1 1 is a flow chart of a method for preventing leakage of a switch circuit of an electronic parking brake system provided by the present application. Figure 1 The embodiment of the present application provides a method for preventing leakage of a switch circuit of an electronic parking brake system, the execution subject of which may be an electronic device, for example, a controller, and the method may include: Step 110, determining a first interface and a second interface of an internal circuit of the EPB switch; the first interface and the second interface are connected to the electronic parking brake system; Step 120: Connect an electronic component in series in the circuit between the first interface and the second interface.

[0020] Figure 2 The circuit device architecture diagram for solving the EPB switch circuit leakage provided by the present application includes: EPB switch, transmission line, transmission signal, wire control brake system, EPB execution unit, etc. The above-mentioned electronic parking brake system in the present invention is a part of the wire control brake system, such as Figure 2 As shown, the first interface of the internal circuit of the EPB switch in step 110 may be SW1 in the figure, and the second interface may be SW4 in the figure. SW1 and SW4 may transmit signals to the electronic parking brake system in the wire control brake system.

[0021] In step 120 , an electronic component may be connected in series in the circuit between the first interface SW1 and the second interface SW4 .

[0022] In one embodiment, the electronic component is used to increase the resistance of a circuit.

[0023] In one embodiment, the electronic component is a resistor.

[0024] In one embodiment, the resistance is greater than 220 kilo-ohms.

[0025] In one embodiment, the current flow direction of the circuit between the first interface and the second interface is unidirectional, which can be achieved by a diode.

[0026] By using a resistance element greater than 220 kilo-ohms, it can be achieved that: when the EPB switch is in the natural state, when the resistance of the diode decreases or fails, SW4 is prevented from transmitting a voltage greater than 4V to the SW1 interface through the diode, causing the wire control system to be activated after hibernation, causing unexpected failures in the wire control brake system.

[0027] Furthermore, the first interface may be SW2, and the second interface may be SW3, and a resistor may be connected in series between SW2 and SW3 to avoid failure.

[0028] The method for preventing leakage of the switch circuit of an electronic parking brake system provided in the embodiment of the present application can reduce the risk of leakage of the EPB switch circuit by connecting a resistor in series in the internal circuit of the EPB switch. It has a simple structure, is easy to implement, and has a low cost. It can effectively avoid the harm caused by the reduction or damage of the diode resistance after long-term use of the EPB switch, which affects the normal operation of the wire control brake system.

[0029] In one embodiment, the method for preventing leakage of a switch circuit of an electronic parking brake system further includes: Determine a third interface and a fourth interface of an internal circuit of an electronic parking brake system switch; the third interface and the fourth interface are connected to the electronic parking brake system; An electronic component is connected in series in the circuit between the third interface and the fourth interface.

[0030] like Figure 2 As shown, assuming that the first interface is SW1 and the second interface is SW2, the third interface can be determined as SW2 and the fourth interface can be determined as SW3. Resistors can be connected in series between SW1 and SW2 and between SW2 and SW3 to further ensure safety.

[0031] The method for preventing leakage of the switch circuit of the electronic parking brake system provided in the embodiment of the present application can further reduce the risk of leakage of the EPB switch circuit by connecting a resistor in series between the third and fourth interfaces. It has a simple structure, is easy to implement, and has a low cost. It can effectively avoid the harm caused by the reduction or damage of the diode resistance of the EPB switch after long-term use, which may affect the normal operation of the wire control brake system.

[0032] The device for preventing leakage of the switch circuit of the electronic parking brake system provided in the present application is described below. The device for preventing leakage of the switch circuit of the electronic parking brake system described below and the method for preventing leakage of the switch circuit of the electronic parking brake system described above can be referred to each other.

[0033] Figure 3Schematic diagram of the structure of the device for preventing leakage of the switch circuit of the electronic parking brake system provided by the present application. Figure 3 The device for preventing leakage of a switch circuit of an electronic parking brake system provided in an embodiment of the present application may include: The determination module 310 is used to determine a first interface and a second interface of an internal circuit of an electronic parking brake system switch; the first interface and the second interface are connected to the electronic parking brake system; The circuit module 320 is used to connect an electronic component in series in the circuit between the first interface and the second interface.

[0034] The device for preventing leakage of the switch circuit of the electronic parking brake system provided in the embodiment of the present application can reduce the risk of leakage of the EPB switch circuit by connecting a resistor in series in the internal circuit of the EPB switch. It has a simple structure, is easy to implement, and has a low cost. It can effectively avoid the harm caused by the reduction or damage of the diode resistance after the EPB switch is used for a long time, which affects the normal operation of the wire control brake system.

[0035] In one embodiment, the electronic component is used to increase the resistance of a circuit.

[0036] In one embodiment, the electronic component is a resistor.

[0037] In one embodiment, the resistance is greater than 220 kilo-ohms.

[0038] In one embodiment, the current flow direction of the circuit between the first interface and the second interface is unidirectional.

[0039] In one embodiment, the determining module 310 is further configured to: Determine a third interface and a fourth interface of the internal circuit of the electronic parking brake system switch; the third interface and the fourth interface are connected to the electronic parking brake system; The circuit module 320 is also used for: An electronic component is connected in series in the circuit between the third interface and the fourth interface.

[0040] Specifically, the above-mentioned device for preventing leakage of the switch circuit of the electronic parking brake system provided in the embodiment of the present application can implement all the method steps implemented by the method embodiment in which the execution subject is the controller, and can achieve the same technical effect. The parts and beneficial effects of this embodiment that are the same as those of the method embodiment will not be described in detail here.

[0041] Figure 4 An example of a physical structure diagram of an electronic device is shown in FIG. Figure 4As shown, the electronic device may include: a processor 410, a communications interface 420, a memory 430 and a communication bus 440, wherein the processor 410, the communications interface 420 and the memory 430 communicate with each other through the communication bus 440. The processor 410 may call the logic instructions in the memory 430 to execute the method for preventing the switch circuit of the electronic parking brake system from leaking electricity, for example, including: Determine a first interface and a second interface of an internal circuit of an electronic parking brake system switch; the first interface and the second interface are connected to the electronic parking brake system; An electronic component is connected in series in the circuit between the first interface and the second interface.

[0042] In addition, the logic instructions in the above-mentioned memory 430 can be implemented in the form of a software functional unit and can be stored in a computer-readable storage medium when it is sold or used as an independent product. Based on this understanding, the technical solution of the present application can be essentially or partly embodied in the form of a software product that contributes to the prior art. The computer software product is stored in a storage medium, including several instructions to enable a computer device (which can be a personal computer, a server, or a network device, etc.) to perform all or part of the steps of the method described in each embodiment of the present application. The aforementioned storage medium includes: U disk, mobile hard disk, read-only memory (ROM), random access memory (RAM), disk or optical disk, etc., various media that can store program codes.

[0043] On the other hand, the present application also provides a non-transitory computer-readable storage medium having a computer program stored thereon, and when the computer program is executed by a processor, the steps of the method for preventing leakage of the switch circuit of the electronic parking brake system provided by the above methods are implemented, for example, including: Determine a first interface and a second interface of an internal circuit of an electronic parking brake system switch; the first interface and the second interface are connected to the electronic parking brake system; An electronic component is connected in series in the circuit between the first interface and the second interface.

[0044] In another aspect, the present application further provides a computer program product, the computer program product comprising a computer program, the computer program may be stored on a non-transitory computer-readable storage medium, and when the computer program is executed by a processor, the computer can execute the steps of the method for preventing leakage of the switch circuit of the electronic parking brake system provided by the above methods, for example, including: Determine a first interface and a second interface of an internal circuit of an electronic parking brake system switch; the first interface and the second interface are connected to the electronic parking brake system; An electronic component is connected in series in the circuit between the first interface and the second interface.

[0045] The device embodiments described above are merely illustrative, wherein the units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, they may be located in one place, or they may be distributed on multiple network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the scheme of this embodiment. Ordinary technicians in this field can understand and implement it without paying creative labor.

[0046] Through the description of the above implementation methods, those skilled in the art can clearly understand that each implementation method can be implemented by means of software plus a necessary general hardware platform, and of course, can also be implemented by hardware. Based on this understanding, the above technical solution is essentially or the part that contributes to the prior art can be embodied in the form of a software product, and the computer software product can be stored in a computer-readable storage medium, such as ROM / RAM, a disk, an optical disk, etc., including a number of instructions for a computer device (which can be a personal computer, a server, or a network device, etc.) to execute the methods described in each embodiment or some parts of the embodiments.

[0047] It should also be noted that the terms "first", "second", etc. in the embodiments of the present application are used to distinguish similar objects, and are not used to describe a specific order or sequence. It should be understood that the terms used in this way can be interchangeable under appropriate circumstances, so that the embodiments of the present application can be implemented in an order other than those illustrated or described here, and the objects distinguished by "first" and "second" are generally of the same type, and the number of objects is not limited. For example, the first object can be one or more.

[0048] In the embodiments of the present application, the term "and / or" describes the association relationship of the associated objects, indicating that three relationships may exist. For example, A and / or B may represent: A exists alone, A and B exist at the same time, and B exists alone. The character " / " generally indicates that the associated objects before and after are in an "or" relationship.

[0049] "Determine B based on A" in the embodiments of the present application means that the factor A should be considered when determining B. It is not limited to "B can be determined based on A alone", but should also include: "Determine B based on A and C", "Determine B based on A, C and E", "Determine C based on A, and further determine B based on C", etc. In addition, it can also include taking A as a condition for determining B, for example, "When A meets the first condition, use the first method to determine B"; for another example, "When A meets the second condition, determine B", etc.; for another example, "When A meets the third condition, determine B based on the first parameter", etc. Of course, it can also be a condition that takes A as a factor for determining B, for example, "When A meets the first condition, use the first method to determine C, and further determine B based on C", etc.

[0050] In the embodiments of the present application, the term "plurality" refers to two or more than two, and other quantifiers are similar.

[0051] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit it. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. A method for preventing leakage of a switch circuit of an electronic parking brake system, characterized in that: include: Determine a first interface and a second interface of an internal circuit of an electronic parking brake system switch; The first interface and the second interface are connected to an electronic parking brake system; An electronic component is connected in series in the circuit between the first interface and the second interface.

2. The method for preventing leakage of a switch circuit of an electronic parking brake system according to claim 1, characterized in that: The electronic component is used to increase the resistance of the circuit.

3. The method for preventing leakage of a switch circuit of an electronic parking brake system according to claim 2, characterized in that: The electronic component is a resistor.

4. The method for preventing leakage of a switch circuit of an electronic parking brake system according to claim 3, characterized in that: The resistance is greater than 220 kilo-ohms.

5. The method for preventing leakage of a switch circuit of an electronic parking brake system according to claim 1, characterized in that: The current flow direction of the circuit between the first interface and the second interface is unidirectional.

6. The method for preventing leakage of a switch circuit of an electronic parking brake system according to claim 1, characterized in that: The method further comprises: Determine a third interface and a fourth interface of the internal circuit of the electronic parking brake system switch; the third interface and the fourth interface are connected to the electronic parking brake system; An electronic component is connected in series in the circuit between the third interface and the fourth interface.

7. A device for preventing leakage of a switch circuit of an electronic parking brake system, characterized in that: include: A determination module, used to determine a first interface and a second interface of an internal circuit of an electronic parking brake system switch; The first interface and the second interface are connected to an electronic parking brake system; The circuit module is used to connect an electronic component in series in the circuit between the first interface and the second interface.

8. An electronic device comprising 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 preventing leakage of a switch circuit of an electronic parking brake system as claimed in any one of claims 1 to 6 is implemented.

9. A non-transitory computer-readable storage medium having a computer program stored thereon, characterized in that: When the computer program is executed by a processor, the method for preventing leakage of a switch circuit of an electronic parking brake system as claimed in any one of claims 1 to 6 is implemented.

10. A computer program product, comprising a computer program, characterized in that When the computer program is executed by a processor, the method for preventing leakage of a switch circuit of an electronic parking brake system as claimed in any one of claims 1 to 6 is implemented.

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