Technique of monitoring abrasion of brake linings by optical fiber sensing

Abstract

The invention discloses a technique of monitoring abrasion of brake linings by optical fiber sensing. An optical fiber displacement sensor is applied to a brake, the thickness of friction blocks on the braking lining is monitored by the optical fiber displacement sensor, and accordingly abrasion degree of the brake linings is shown by data, a driver can clearly learn about abrasion of the brake lining, timely replacement is facilitated, and safety accidents caused by reduced braking performance are avoided.

Description

technical field [0001] The invention relates to the technical field of motor vehicle braking, in particular to a technology for monitoring the wear condition of brake pads. Background technique [0002] With the development of society, automobiles are becoming more and more popular, which brings convenience to people's lives and increases the probability of traffic accidents. Among the cases of death caused by all accidents, the number of deaths caused by car accidents occupies the first place. At present, 1.27 million people die in car accidents every year in the world, a large part of which is caused by the failure of the brake system of the car. [0003] The principle of the vehicle's driving brake is that the brake pad uses the friction block to rub against the brake disc (drum), and converts part of the kinetic energy of the vehicle into heat energy, thereby achieving the purpose of braking. Therefore, in the braking system of the car , The brake pad is the most criti...

AI Technical Summary

Problems solved by technology

In order to meet the braking needs, the friction material of the brake pads is designed to have sufficient thickness, but with the use of the car, the friction material will gradually wear and become thinner. When the friction block wears to a certain extent, it can still be used continuously, but the manufacturing The dynamic performance will be greatly reduced, and it is easy to cause safety accidents due to poor braking effect. At this time, new brake pads must be replaced to ensure driving safety.

However, the current situation is that the wear rate of the brake pad friction block is affected by many factors such as manufacturing materials, driving habits, and brake use frequency. Brake pads have been severely worn but still continue to be used, which is the main cause of safety accidents caused by brake system failure during driving

[0004] At present, some high-end cars are equipped with an alarm function for brake pads, but the alarm will only be issued when the brake pads are worn to the limit. Safety

At present, the only way to ensure that the situation is discovered in time is to regularly go to the 4S shop or auto repair shop to check the brake pads of the car, but it will definitely bring some troubles to the car owner.

Images