Wheel speed sensor
A wheel speed sensor and sensor probe technology, which is applied in the field of wheel speed sensors, can solve the problems of high technical content and cost of Hall-type wheel speed sensors, cumbersome installation, and prone to errors, so as to reduce the scrap rate of products and avoid short circuit phenomenon. , to avoid the effect of locking slip
Inactive Publication Date: 2017-02-22
钟贵洪
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Problems solved by technology
At present, most of the wheel speed sensors of automobiles use magnetoelectric wheel speed sensors and Hall wheel speed sensors. The technical content and cost of Hall wheel speed sensors are relatively high, and the installation is more cumbersome. The application range of the car is not as good as the magnetoelectric type. widely
However, the magnetoelectric wheel speed sensor has the problems of weak signal at low speed, error prone at high speed, and poor anti-electromagnetic interference ability, which has brought limitations to practical applications.
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[0010] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.
[0011] see figure 1 , the present invention provides a technical solution: a wheel speed sensor, including a housing 1, a magnetic steel 2 is arranged inside the housing 1, a plastic isolation pin 3 is arranged on the top of the magnetic steel 2, and the plastic isolation pin 3 is installed on the magnetic The top of the steel 2 and the top of the inner cavity of the housing 1 are symmetrically provided with pins 4, and the plastic isolation pins 3 and pins 4 ...
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The invention discloses a wheel speed sensor comprising a housing in which magnet steel is provided in the housing. The top of the magnetic steel is provided with a plastic isolation dowel, the top of the housing is symmetrically provided with pins. The bottom of the housing is fixedly connected with a mounting plate, the bottom of the mounting plate is provided with a fixed shell, the fixed shell is provided with a permanent magnet, the top of the permanent magnet is connected with the mounting plate, the bottom of the permanent magnet is connected with a sensor probe. Through the plastic isolation dowel and the pins, the wheel speed sensor can avoid short circuit in the sensor production and injection molding process, and reduce product scrap rate. By setting the coil and permanent magnet, when the wheel rotates, the coil and the permanent magnet move relatively, and the magnetic field is produced. With the wheel speed changes, the magnetic field changes; by transmitting the voltage signal to the processor, locking and slip of wheels are avoided to achieve safe driving.
Description
technical field [0001] The invention relates to the technical field of wheel speed sensors, in particular to a wheel speed sensor. Background technique [0002] The wheel speed sensor is a device that provides wheel speed signals to the ABS control unit of the car. It is an input device for the car computer system. It can convert the speed information of the car during operation into an electrical signal and send it to the computer so that the engine can work at its best. state. At present, most of the wheel speed sensors of automobiles use magnetoelectric wheel speed sensors and Hall wheel speed sensors. The technical content and cost of Hall wheel speed sensors are relatively high, and the installation is more cumbersome. The application range of the car is not as good as the magnetoelectric type. widely. However, the magnetoelectric wheel speed sensor has the problems of weak signal at low speed, prone to errors at high speed, and poor anti-electromagnetic interference ...
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IPC IPC(8): G01P3/44
CPCG01P3/44
Inventor 钟贵洪
Owner 钟贵洪