ABS system indicator light control circuit

Abstract

The present invention relates to the field of ABS system, and discloses an ABS system indicator light control circuit, comprising: a high potential input module, connected to the ABS indicator light, used to output a high level to the ABS indicator light; the high potential input module comprises: a first conduction unit, connected to an external high level input, used to connect the ABS indicator light with an external high level input when conducting; a first control unit, connected to an external high level input, used to control the conduction and cutoff of the first conduction unit; a low potential input module, connected to the ABS indicator light, used to output a low level to the ABS indicator light; the low potential input module comprises: a second conduction unit, connected to an external high level input, used to ground the ABS indicator light when conducting; a second control unit, connected to an external high level input, used to control the conduction and cutoff of the second conduction unit. The present invention has the effect of improving work efficiency.

Description

Technical Field

[0001] The invention relates to the technical field of ABS systems, and in particular to an ABS system indicator light control circuit. Background Art

[0002] Currently, ABS systems are all provided with indicator lights to determine the working status of the ABS system.

[0003] Currently, the two ends of the indicator light need to be connected to a high level and a low level respectively to light up. Generally, the level at which one pin of the indicator light is connected is used to determine the level at which the other pin is connected. For example, if one pin is connected to the positive pole, the other pin needs to be connected to a low level. If it is connected to the negative pole, the other pin needs to be connected to the positive pole.

[0004] The above-mentioned prior art solutions have the following defects: since the settings of different manufacturers are different, when setting the control circuit of the indicator light, engineers must observe the settings of this manufacturer, determine the level of the pin connection, and then set the control circuit according to the level of the pin connection, which causes engineers to observe different manufacturers, making the design of the control circuit more cumbersome and reducing work efficiency. Summary of the invention

[0005] In view of the shortcomings of the prior art, the present invention provides an ABS system indicator light control circuit, which has the effect of improving work efficiency.

[0006] To achieve the above object, the present invention provides the following technical solution: an ABS system indicator light control circuit, comprising:

[0007] A high potential input module is connected to the ABS indicator light and is used to output a high level to the ABS indicator light;

[0008] The high potential input module comprises:

[0009] The first conduction unit is connected to an external input high level and is used to connect the ABS indicator light with the external input high level when conducting.

[0010] A first control unit, connected to an external high level input, for controlling the on and off of the first conduction unit;

[0011] A low potential input module is connected to the ABS indicator light and is used to output a low level to the ABS indicator light;

[0012] The low potential input module includes:

[0013] The second conduction unit is connected to an external input high level and is used to ground the ABS indicator light when conducting;

[0014] The second control unit is connected to an external high level input and is used to control the conduction and cutoff of the second conduction unit.

[0015] By adopting the above technical solution, when one end of the ABS indicator light is connected to a high level, the other end needs to be connected to a low level, and the second control unit controls the second conduction unit to be turned on. At this time, one end of the ABS indicator light is connected to a high level and the other end is grounded, and the ABS indicator light is illuminated; when one end of the ABS indicator light is connected to a low level, the other end needs to be connected to a high level, and the first control unit controls the first conduction unit to be turned on. At this time, one end of the ABS indicator light is connected to an external input high level and the other end is connected to a low level, and the ABS indicator light is illuminated, so there is no need to care whether one end of the ABS indicator light is connected to a high level or a low level, which simplifies the setting of the control circuit and improves work efficiency.

[0016] The present invention is further configured to include a low power consumption module, wherein the low power consumption module includes:

[0017] A first isolation unit is connected to the external input high level and the high potential input module, and is used to prevent the current from being transmitted to the external input high level through the high potential input module;

[0018] The second isolation unit is connected to the ABS indicator light and the high potential input module, and is used to prevent the current from directly reaching the ABS indicator light without passing through the high potential input module.

[0019] By adopting the above technical solution, when one end of the ABS indicator light is connected to a high level and there is no external input, the current flows from the ABS indicator light to the outside. The first isolation unit prevents the current from being transmitted to the outside through the high-potential input module, thereby reducing power consumption; the second isolation unit prevents the current from directly reaching the ABS indicator light without passing through the high-potential input module, and isolates the ABS light from the external input when the external input voltage is small.

[0020] The present invention is further configured as follows: the first isolation unit and the second isolation unit are both diodes, the positive electrode of the first isolation unit is connected to an external input high level, and the positive electrode of the second isolation unit is connected to an ABS indicator light.

[0021] By adopting the above technical solution, the diode has the characteristic of unidirectional conduction, so that it can achieve better isolation without affecting normal conduction, and the voltage drop is small, so that the whole circuit can maintain a small power consumption.

[0022] The present invention is further configured as follows: the first conduction unit is a transistor, the first control unit is a resistor, one end of the first control unit is connected to the first isolation unit and the current input end of the first conduction unit, and the other end is connected to the second isolation unit and the conduction control end of the first conduction unit, one end of the second isolation unit is connected to the current output end of the first conduction unit, and the other end is connected to the conduction control end of the first conduction unit.

[0023] By adopting the above technical solution, the first control unit provides a conduction voltage to the conduction control terminal of the first conduction unit, so that the first conduction unit is turned on, and the current reaches the ABS indicator light through the first isolation unit and the first conduction unit to light up.

[0024] The present invention is further configured as follows: the second conduction unit is a transistor, the second control unit includes a first resistor and a second resistor, the first resistor and the second resistor are connected in series and grounded, the connection midpoint of the first resistor and the second resistor is connected to the conduction control end of the second control unit, the current input end of the second conduction unit is connected to the second isolation unit, and the current output end of the second conduction unit is grounded.

[0025] By adopting the above technical solution, the second control unit provides a conduction voltage to the conduction control terminal of the second conduction unit, so that the first conduction unit is turned on, and the current is grounded through the second isolation unit to realize lighting.

[0026] The present invention is further configured as follows: the first conduction unit and the second conduction unit are both NPN transistors or N-channel field effect transistors.

[0027] By adopting the above technical solution, both the NPN transistor and the N-channel field effect transistor can be turned on by applying a high level externally, thereby better controlling the on and off of the ABS indicator light.

[0028] The present invention is further configured to include a protection unit, wherein two ends of the protection unit are electrically connected to the ABS indicator light and the high potential input module and the low potential input module respectively.

[0029] By adopting the above technical solution, when the protection unit is short-circuited, the ABS indicator light is completely isolated from the high-potential input module and the low-potential input module, so that no current flows through the ABS indicator light, thereby providing better protection for the ABS indicator light.

[0030] In summary, the present invention has the following beneficial effects:

[0031] 1. By setting a high potential input module and a low potential input module, the high potential input module provides a high level when one end of the ABS indicator light is connected to a low level, and the low potential input module provides a low level when one end of the ABS indicator light is connected to a high level, so that the ABS can work normally no matter what level is connected, simplifying the setting of the control circuit and improving work efficiency;

[0032] 2. By providing the first isolation unit and the second isolation unit, the generation of current is prevented when the ABS indicator light is not working, thereby reducing the power consumption of the control circuit. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 It is a circuit structure diagram of the present invention.

[0034] Figure numerals: 1. high potential input module; 11. first conduction unit; 12. first control unit; 2. low potential input module; 21. second conduction unit; 22. second control unit; 221. first resistor; 222. second resistor; 3. low power consumption module; 31. first isolation unit; 32. second isolation unit; 4. protection unit. DETAILED DESCRIPTION

[0035] The present invention is further described in detail below in conjunction with the accompanying drawings.

[0036] Reference Figure 1 , is an ABS system indicator light control circuit disclosed in the present invention, comprising a high potential input module 1 and a low potential input module 2, the high potential input module 1 comprises a first conduction unit 11 and a first control unit 12, the first conduction unit 11 can be an NPN type transistor, the first control unit 12 can be a resistor, and the base and collector of the first conduction unit 11 are electrically connected to the two ends of the first control unit 12 respectively.

[0037] The low-voltage input module 2 includes a second conduction unit 21 and a second control unit 22. The first conduction unit 11 can be an N-channel field effect transistor. The second control unit 22 includes a first resistor 221 and a second resistor 222. The first resistor 221 and the second resistor 222 are connected in series. The connection midpoint of the first resistor 221 and the second resistor 222 is electrically connected to the gate of the second conduction unit 21. The source of the second conduction unit 21 is grounded, and one end of the second resistor 222 away from the first resistor 221 is also grounded. One end of the first resistor 221 away from the second resistor 222 is connected to an external input high level.

[0038] It also includes a low-power consumption module 3, which includes a first isolation unit 31 and a second isolation unit 32. The first isolation unit 31 and the second isolation unit 32 can both be diodes. The positive electrode of the first isolation unit 31 is connected to an external input high level, and the negative electrode is connected to an end of the first control unit 12 away from the first conduction unit 11 and away from the base. The positive electrode of the second isolation unit 32 is electrically connected to the emitter of the first conduction unit 11, and the negative electrode is electrically connected to the base of the first conduction unit 11 and the drain of the second conduction unit 21.

[0039] The device further comprises a protection unit 4 , which may be a fuse, and two ends of the protection unit 4 are electrically connected to the pin of the ABS indicator light and the positive electrode of the second isolation unit 32 , respectively.

[0040] The implementation principle of this embodiment is: when the pin at one end of the ABS indicator light is connected to a high level, the second conduction unit 21 is turned on by the high level input externally, which is equivalent to grounding the other pin of the ABS indicator light, and the ABS indicator light is illuminated; when the pin at one end of the ABS indicator light is connected to a low level, the first conduction unit 11 is turned on by the high level input externally, which is equivalent to connecting the other pin of the ABS indicator light to a high level, and the ABS indicator light is illuminated. Regardless of whether one of the pins of the ABS indicator light is connected to a high level or a low level, the ABS indicator light can be operated by the external high level input, thereby simplifying the setting of the control circuit and improving the working efficiency.

[0041] When the ABS indicator light does not need to be controlled, there is no external high-level input. Since the ABS indicator light is generally powered by a battery on the car, one end of the ABS indicator light is always at a high level. At this time, since there is no external input, the level at the external input point is lower than the end of the ABS indicator light connected to the battery, which causes current backflow and makes the ABS indicator light work. At this time, the first isolation unit 31 prevents current backflow through its own unidirectional conductivity, making the ABS indicator light unable to work and reducing power consumption.

[0042] The embodiments of this specific implementation method are all preferred embodiments of the present invention, and are not intended to limit the protection scope of the present invention. Therefore, any equivalent changes made based on the structure, shape, and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. An ABS system indicator light control circuit, characterized in that: include: A high potential input module (1) is connected to the ABS indicator light and is used to output a high level to the ABS indicator light; The high potential input module (1) comprises: A first conduction unit (11) is connected to an external input high level and is used to connect the ABS indicator light to the external input high level when conducting; A first control unit (12) connected to an external high level input and used to control the on and off of the first conduction unit (11); A low potential input module (2) is connected to the ABS indicator light and is used to output a low level to the ABS indicator light; The low potential input module (2) comprises: A second conduction unit (21) is connected to an external high level input and is used to ground the ABS indicator light when conducting; A second control unit (22) connected to an external high level input and used to control the conduction and cutoff of the second conduction unit (21); When one end of the ABS indicator light is connected to a high level, the other end needs to be connected to a low level, and the second control unit (22) controls the second conduction unit (21) to be turned on. At this time, one end of the ABS indicator light is connected to an external input high level, and the other end is grounded, and the ABS indicator light is illuminated; when one end of the ABS indicator light is connected to a low level, the other end needs to be connected to a high level, and the first control unit (12) controls the first conduction unit (11) to be turned on. At this time, one end of the ABS indicator light is connected to an external input high level, and the other end is connected to a low level, and the ABS indicator light is illuminated.

2. The ABS system indicator light control circuit according to claim 1, characterized in that: It also includes a low power consumption module (3), wherein the low power consumption module (3) includes: A first isolation unit (31) is connected to the external input high level and the high potential input module (1) and is used to prevent current from being transmitted to the external input high level through the high potential input module (1); The second isolation unit (32) is connected to the ABS indicator light and the high potential input module (1) and is used to prevent the current from directly reaching the ABS indicator light without passing through the high potential input module (1).

3. The ABS system indicator light control circuit according to claim 2, characterized in that: The first isolation unit (31) and the second isolation unit (32) are both diodes; the positive electrode of the first isolation unit (31) is connected to an external input high level, and the positive electrode of the second isolation unit (32) is connected to an ABS indicator light.

4. The ABS system indicator light control circuit according to claim 2, characterized in that: The first conduction unit (11) is a transistor, the first control unit (12) is a resistor, one end of the first control unit (12) is connected to the first isolation unit (31) and the current input end of the first conduction unit (11), and the other end is connected to the second isolation unit (32) and the conduction control end of the first conduction unit (11), and one end of the second isolation unit (32) is connected to the current output end of the first conduction unit (11), and the other end is connected to the conduction control end of the first conduction unit (11).

5. The ABS system indicator light control circuit according to claim 1, characterized in that: The second conduction unit (21) is a transistor, and the second control unit (22) comprises a first resistor (221) and a second resistor (222), the first resistor (221) and the second resistor (222) are connected in series and grounded, the connection midpoint of the first resistor (221) and the second resistor (222) is connected to the conduction control end of the second control unit (22), the current input end of the second conduction unit (21) is connected to the second isolation unit (32), and the current output end of the second conduction unit (21) is grounded.

6. The ABS system indicator light control circuit according to claim 1, characterized in that: The first conducting unit (11) and the second conducting unit (21) are both NPN-type triodes or N-channel field effect transistors.

7. The ABS system indicator light control circuit according to claim 1, characterized in that: It also comprises a protection unit (4), wherein two ends of the protection unit (4) are respectively electrically connected to the ABS indicator light and the high potential input module (1) and the low potential input module (2).

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