a brake sensor, acting on the sensor type braking system, to help the driver determines the brake pads wear, to facilitate timely repair and maintenance, normal-based system to ensure stable operation. After
1. Brake Principle
works brake mainly from friction by the brake pad and brake disc (drum) and tire friction with the ground, converting a vehicle traveling kinetic energy into friction the heat, the car stopped. A good efficiency of the braking system must be able to provide stable, sufficient braking force can be controlled, and has good heat dissipation and hydraulic transmission, to ensure that the driver applied the brake pedal force is transmitted to the master cylinder can be sufficiently effective and each wheel cylinder, and avoid high fever caused by hydraulic brake failure and decline.
on the car brake system is divided into two major categories of disc and drum, but in addition to cost advantages, efficiency is far smaller than the drum brake disc brakes, brake system and therefore will be discussed only disc brakes based.
2. The sensor structure and function
Sensor means can feel a predetermined physical quantity, according to a certain law conversion device or the device may be an input signal. Briefly, the sensor is a device for converting into a non-power electricity. Sensors are usually the following three components:
(1) sensitive element refers to a direct feel (or response) portion is measured, is about to be measured non-through-sensitive element is converted into the sensor to be measured with a determined relationship charge or other amount.
(2) the non-electricity conversion element will be converted to electrical parameters.
(3) the effect of measurement circuit is electrically variable input conversion element and the like processed is converted into a voltage, current, or frequency power can be measured, for display, recording, control and processing section.
3. The brake sensor works
There are two basic alarm brake pads, the first is a relatively simple mechanical alarm is when the brake pads are worn to expose alarmWhen, a harsh sound emitted by the alarm friction. The second type is a sensor, in normal operation, typically normally open, i.e. the sensor always path, this time on the dashboard without an alarm display. When the line sensor is ground off, then become open circuit, began to alarm display on the dashboard, where braking system prompts the owner, in order to obtain real-time maintenance.