Switch indicator lamp internal circuit in electronic parking brake system

Abstract

The invention provides a switch indicator lamp internal circuit in an electronic parking brake system. The switch indicator lamp internal circuit comprises a switch control module and a switch indicator lamp module. A first port of the switch control module is connected with a second port of the switch indicating lamp module; the switch control module is used for controlling a switch of the electronic parking brake system; the switch indicating lamp module is used for indicating the on-off state of the electronic parking brake system; the switch indicating lamp module comprises a current control resistor, and the current control resistor is used for determining that the current in the switch indicating lamp module is smaller than a preset threshold value under the condition that the switch is turned off. According to the switch indicator lamp internal circuit in the electronic parking brake system, the current control resistor connected in parallel with the light-emitting diode is additionally arranged in the switch indicator lamp module, and it can be guaranteed that the value of the current passing through the light-emitting diode on the circuit is smaller than the preset threshold value under the condition that the switch is turned off; therefore, the switch indicating lamp is in an off state.

Description

Technical Field

[0001] The invention relates to the technical field of braking, and in particular to an internal circuit of a switch indicator light in an electronic parking brake system. Background Art

[0002] The electronic parking brake system is an important component of the automobile braking system, providing an important guarantee for safe driving. When it works properly, it can realize static parking and release, automatic parking and release, dynamic parking and other energy supply, and can participate in the coordinated work of the braking system in many other emergency situations. The electronic parking brake system controls the brakes through electronic signals, which can achieve precise, fast and stable braking effects.

[0003] However, the current electronic parking brake system cannot ensure that the leakage current in the system circuit is less than 100% when the switch is turned off. , which can cause the switch indicator light to remain on after the switch is turned off. Summary of the invention

[0004] The invention provides an internal circuit of a switch indicator light in an electronic parking brake system, which is used to solve the technical problem in the prior art that the switch indicator light of the electronic parking brake system does not turn off after the switch is turned off.

[0005] The present invention provides an internal circuit of a switch indicator light in an electronic parking brake system, comprising: Switch control module and switch indicator light module; The first port of the switch control module is connected to the second port of the switch indicator light module; The switch control module is used to control the switch of the electronic parking brake system; The switch indicator light module is used to indicate the switch state of the electronic parking brake system; The switch indicator light module includes a current control resistor, and the current control resistor is used to determine that the current in the switch indicator light module is less than a preset threshold when the switch is closed.

[0006] In some embodiments, the switch indicator light module also includes a light emitting diode.

[0007] In some embodiments, a first port of the current control resistor is connected to a first port of the light emitting diode, and a second port of the current control resistor is connected to a second port of the light emitting diode.

[0008] In some embodiments, the second port of the current control resistor is connected to the second port of the switch indicator light module, and the second port of the light emitting diode is connected to the second port of the switch indicator light module.

[0009] In some embodiments, the switch indicator light module further includes an internal resistor.

[0010] In some embodiments, the first port of the current control resistor is connected to the second port of the internal resistor.

[0011] In some embodiments, the second terminal of the internal resistor is connected to the first terminal of the light emitting diode.

[0012] In some embodiments, the first port of the internal resistor is connected to the first port of the switch indicator light module.

[0013] In some embodiments, the resistance of the current control resistor is determined based on an internal resistor and a line resistance.

[0014] In some embodiments, the preset threshold is .

[0015] The internal circuit of the switch indicator light in the electronic parking brake system provided by the present invention can ensure that the current value passing through the light-emitting diode in the circuit is less than a preset threshold value when the switch is turned off, thereby ensuring that the switch indicator light is in an off state by adding a current control resistor in parallel with the light-emitting diode in the switch indicator light module. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the present invention or the prior art, the following briefly introduces 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 invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0017] Figure 1 The present invention is a schematic diagram of the structure of the internal circuit of the switch indicator light in the electronic parking brake system provided by the present invention. DETAILED DESCRIPTION

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

[0019] Figure 1 FIG. 1 is a schematic diagram of the structure of the internal circuit of the switch indicator light in the electronic parking brake system provided by the present invention. Figure 1 As shown, including the following: A switch indicator light module 110 and a switch control module 120; The first port of the switch control module is connected to the second port of the switch indicator light module; The switch control module is used to control the switch of the electronic parking brake system; The switch indicator light module is used to indicate the switch state of the electronic parking brake system; The switch indicator light module includes a current control resistor, and the current control resistor is used to determine that the current in the switch indicator light module is less than a preset threshold when the switch is closed.

[0020] Specifically, the current electronic parking brake system cannot ensure that the leakage current in the system circuit is less than , which will cause the light emitting diode 101 in the switch indicator light module 110 to remain in a lighted state after the switch is turned off.

[0021] To solve the above technical problems, the present invention adds a current control resistor 102 in parallel with the light emitting diode 101 in the switch indicator light module 110. The current control resistor 102 is used to make the current passing through the light emitting diode 101 less than a preset threshold when the switch is closed.

[0022] The internal circuit of the switch indicator light in the electronic parking brake system provided by the present invention can ensure that the current value passing through the light-emitting diode in the circuit is less than a preset threshold value when the switch is turned off, thereby ensuring that the switch indicator light is in an off state by adding a current control resistor in parallel with the light-emitting diode in the switch indicator light module.

[0023] In some embodiments, the switch indicator light module also includes a light emitting diode.

[0024] In some embodiments, a first port of the current control resistor is connected to a first port of the light emitting diode, and a second port of the current control resistor is connected to a second port of the light emitting diode.

[0025] In some embodiments, the second port of the current control resistor is connected to the second port of the switch indicator light module, and the second port of the light emitting diode is connected to the second port of the switch indicator light module.

[0026] Specifically, the switch indicator light module 110 further includes a light emitting diode 101 , and a current control resistor 102 is connected in parallel with the light emitting diode 101 .

[0027] In some embodiments, the switch indicator light module further includes an internal resistor.

[0028] In some embodiments, the first port of the current control resistor is connected to the second port of the internal resistor.

[0029] In some embodiments, the second terminal of the internal resistor is connected to the first terminal of the light emitting diode.

[0030] In some embodiments, the first port of the internal resistor is connected to the first port of the switch indicator light module.

[0031] Specifically, the switch indicator light module 110 also includes an internal resistor 103, the first port of the current control resistor 102 is connected to the second port of the internal resistor 103, the second port of the internal resistor 103 is connected to the first port of the light-emitting diode 101, and the first port of the internal resistor 103 is connected to the first port of the switch indicator light module 110.

[0032] In some embodiments, the resistance of the current control resistor is determined based on an internal resistor and a line resistance.

[0033] In some embodiments, the preset threshold is .

[0034] Specifically, the resistance of the current control resistor 102 is determined based on the internal resistance and the line resistance. By connecting the current control resistor 102 in parallel with the light-emitting diode 101, the current passing through the light-emitting diode 101 can be made less than a preset threshold when the switch is turned off, for example .

[0035] The internal circuit of the switch indicator light in the electronic parking brake system provided by the present invention can ensure that the current value passing through the light-emitting diode in the circuit is less than a preset threshold value when the switch is turned off, thereby ensuring that the switch indicator light is in an off state by adding a current control resistor in parallel with the light-emitting diode in the switch indicator light module.

[0036] 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.

[0037] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention 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 invention.

Claims

1. An internal circuit of a switch indicator light in an electronic parking brake system, characterized in that: include: Switch control module and switch indicator light module; The first port of the switch control module is connected to the second port of the switch indicator light module; The switch control module is used to control the switch of the electronic parking brake system; The switch indicator light module is used to indicate the switch state of the electronic parking brake system; The switch indicator light module includes a current control resistor, and the current control resistor is used to determine that the current in the switch indicator light module is less than a preset threshold when the switch is closed.

2. The internal circuit of the switch indicator light in the electronic parking brake system according to claim 1, characterized in that: The switch indicator light module also includes a light emitting diode.

3. The internal circuit of the switch indicator light in the electronic parking brake system according to claim 2, characterized in that: The first port of the current control resistor is connected to the first port of the light emitting diode, and the second port of the current control resistor is connected to the second port of the light emitting diode.

4. The internal circuit of the switch indicator light in the electronic parking brake system according to claim 2, characterized in that: The second port of the current control resistor is connected to the second port of the switch indicator light module, and the second port of the light emitting diode is connected to the second port of the switch indicator light module.

5. The internal circuit of the switch indicator light in the electronic parking brake system according to claim 1, characterized in that: The switch indicator light module also includes an internal resistor.

6. The internal circuit of the switch indicator light in the electronic parking brake system according to claim 5, characterized in that: The first port of the current control resistor is connected to the second port of the internal resistor.

7. The internal circuit of the switch indicator light in the electronic parking brake system according to claim 5, characterized in that: The second terminal of the internal resistor is connected to the first terminal of the light emitting diode.

8. The internal circuit of the switch indicator light in the electronic parking brake system according to claim 5, characterized in that: The first port of the internal resistor is connected to the first port of the switch indicator light module.

9. The internal circuit of the switch indicator light in the electronic parking brake system according to claim 1, characterized in that: The resistance of the current control resistor is determined based on the internal resistance and the line resistance.

10. The internal circuit of the switch indicator light in the electronic parking brake system according to claim 1, characterized in that: The preset threshold is .

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