CN215552856U - Hall type brake lamp sensor for automobile - Google Patents
Hall type brake lamp sensor for automobile Download PDFInfo
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- CN215552856U CN215552856U CN202120943536.2U CN202120943536U CN215552856U CN 215552856 U CN215552856 U CN 215552856U CN 202120943536 U CN202120943536 U CN 202120943536U CN 215552856 U CN215552856 U CN 215552856U
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- brake
- circuit board
- pedal assembly
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Abstract
The utility model discloses a Hall type brake lamp sensor which comprises a body corresponding to the position of a brake pedal assembly in an automobile, wherein the body comprises a circuit board, and a sensing piece for acquiring a brake signal of the brake pedal assembly based on the change of a magnetic field when the brake pedal assembly brakes is arranged on the circuit board. The utility model has the following advantages and effects: the utility model realizes the collection of the brake signal by sensing the distance of the iron block in the external brake pedal assembly, and effectively solves the defect of the service life loss of the mechanical switch of the existing brake lamp; meanwhile, the method has the advantages of stable signal output and no mechanism contact jitter signal.
Description
Technical Field
The utility model relates to the field of automotive electronics, in particular to an automotive Hall type brake lamp sensor.
Background
At present, the whole vehicle has more and more control modules for safe driving and convenient operation, and the requirements and strategies of the modules for collecting brake lamp switch signals are different. The requirements of the whole vehicle on the service life of a brake lamp switch and the quality of an output signal are higher and higher. The traditional mechanical brake lamp switch has short mechanical service life, mechanical jitter of an output signal can cause switching delay of a cruise signal and a brake signal, a module misreport fault code is caused, and the development requirement of a whole vehicle can not be well met.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a Hall type brake lamp sensor for an automobile, which solves the problems in the background technology.
The technical purpose of the utility model is realized by the following technical scheme: a Hall type brake lamp sensor comprises a body corresponding to the position of a brake pedal assembly in an automobile, wherein the body comprises a circuit board, and a sensing piece for acquiring a brake signal based on the change of a magnetic field when the brake pedal assembly brakes is arranged on the circuit board.
The further setting is that: the induction part consists of a U-shaped magnet and a Hall sensor, the two ends of the U-shaped magnet are homopolar, the U-shaped magnet enables the center in the groove to generate a near-zero magnetic field area under the mutual repulsion action of homopolarity, and the Hall sensor is fixed in the near-zero magnetic field area.
The further setting is that: the Hall sensor adopts a programmable Hall sensor.
The further setting is that: the circuit board is provided with a pin header for electric connection.
The further setting is that: the body comprises a shell and the circuit board fixedly arranged in the shell.
The utility model has the beneficial effects that:
1. the body of the utility model is fixed, the acquisition of braking signals is realized by sensing the distance of the iron block in the external braking pedal plate assembly, and the defect of the service life loss of the mechanical switch of the existing braking lamp is effectively overcome.
2. The utility model induces the change of the magnetic field by the U-shaped magnet and the Hall sensor, and has the advantages of stable signal output and no mechanism contact jitter signal; and the output switching time delay of the cruise signal and the brake signal is small, and no mechanical stroke is generated when 2 paths of signals are output simultaneously.
3. The induction distance of the Hall sensor can be adjusted in a programmable way without changing hardware and structure.
4. The utility model has simple structure and can realize automatic production.
Drawings
FIG. 1 is a schematic structural diagram of a circuit board according to an embodiment;
FIG. 2 is a top view of an embodiment of a circuit board;
FIG. 3 is a schematic view of an embodiment of an assembly of a circuit board and an inner case;
fig. 4 is a schematic structural diagram of the housing in the embodiment.
In the figure: 11. a housing; 111. an inner shell; 21. a circuit board; 3. a sensing member; 31. a U-shaped magnet; 32. a Hall sensor; 311. a near zero magnetic field region; 22. arranging needles;
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
As shown in fig. 1 to 4, a hall brake light sensor comprises a body corresponding to the position of a brake pedal assembly in an automobile, wherein the body comprises a circuit board 21, and a sensing member 3 which acquires a brake signal based on the change of a magnetic field when the brake pedal assembly brakes is arranged on the circuit board 21.
Specifically, the sensing member 3 is composed of a U-shaped magnet 31 and a hall sensor 32, both ends of the U-shaped magnet 31 are of the same polarity, and the U-shaped magnet 31 generates a near-zero magnetic field region 311 at the center of the groove under the mutual repulsion action of the same polarity, and the hall sensor 32 is fixed in the near-zero magnetic field region 311 and corresponds to the position of an iron block in the brake pedal assembly.
It should be noted that the brake pedal assembly is a conventional structure in the existing automobile, and an iron block is generally arranged during production or can be arranged subsequently, and the brake pedal assembly is arranged at a corresponding position of the iron block in the brake pedal assembly.
The working principle of the utility model is as follows:
when the external iron block is close to the opening end of the U-shaped magnet 31, the magnetic fields at the two ends of the opening of the U-shaped magnet 31 do work to the iron block under the high magnetic conduction action of the iron block, so that the mutually exclusive magnetic fields in the groove at the two ends are reduced, and the magnetic field at the center in the groove is enhanced; the hall sensor 32 is arranged in a near-zero magnetic field region 311 at the center in the U-shaped magnet 31, and controls the output of the intelligent MOS driving brake signal and the cruise signal by utilizing the change principle of the magnetic field intensity in the groove.
It should be noted that in this embodiment, the hall sensor 32 is a programmable hall sensor, and any distance point of the iron block within a certain distance range can be set as a switching point of a hall brake lamp switch signal; meanwhile, the hall sensor 32 outputs a control signal to the 2-way high-side intelligent MOS, so that the signal output quality and stability are improved.
In addition, the circuit board 21 is provided with a pin header 22 for electrical connection.
In addition, the body is composed of a housing 11 and the circuit board 21 fixedly disposed in the housing 11.
Further, an inner housing 111 is disposed in the outer housing 11, and after the circuit board 21 is mounted in the inner housing 111, the inner housing 111 is mounted in the outer housing 11.
The present embodiment is only for explaining the present invention, and it is not limited to the present invention, and those skilled in the art can make modifications of the present embodiment without inventive contribution as needed after reading the present specification, but all of them are protected by patent law within the scope of the claims of the present invention.
Claims (5)
1. A hall-type stop lamp sensor, characterized in that: the brake pedal assembly comprises a body corresponding to the position of the brake pedal assembly in the automobile, wherein the body comprises a circuit board (21), and a sensing element (3) which acquires a brake signal based on the change of a magnetic field when the brake pedal assembly brakes is arranged on the circuit board (21).
2. The hall brake light sensor of claim 1, wherein: the induction part (3) consists of a U-shaped magnet (31) and a Hall sensor (32), the two ends of the U-shaped magnet (31) are of the same polarity, the U-shaped magnet (31) enables the center in the groove to generate a near-zero magnetic field region (311) under the mutual repulsion action of the same polarity, and the Hall sensor (32) is fixed on the near-zero magnetic field region (311).
3. The hall brake light sensor of claim 2, wherein: the Hall sensor (32) adopts a programmable Hall sensor.
4. The hall brake light sensor of claim 1, wherein: the circuit board (21) is provided with a pin header (22) for electric connection.
5. The hall brake light sensor of claim 1, wherein: the body is composed of a shell (11) and the circuit board (21) fixedly arranged in the shell (11).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120943536.2U CN215552856U (en) | 2021-04-30 | 2021-04-30 | Hall type brake lamp sensor for automobile |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120943536.2U CN215552856U (en) | 2021-04-30 | 2021-04-30 | Hall type brake lamp sensor for automobile |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215552856U true CN215552856U (en) | 2022-01-18 |
Family
ID=79858668
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120943536.2U Active CN215552856U (en) | 2021-04-30 | 2021-04-30 | Hall type brake lamp sensor for automobile |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215552856U (en) |
-
2021
- 2021-04-30 CN CN202120943536.2U patent/CN215552856U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address |
Address after: No. 289 and 291, Binhai Second Road, Wenzhou Economic and Technological Development Zone, Zhejiang Province, 325000 Patentee after: Zhejiang Changjiang Automobile Electronics Co.,Ltd. Address before: No.289, Binhai 2nd Road, Wenzhou Economic and Technological Development Zone, Zhejiang Province 325000 Patentee before: WENZHOU CHANGJIANG AUTOMOBILE ELECTRONIC SYSTEM Co.,Ltd. |
|
| CP03 | Change of name, title or address |