Patent ID: 9447832
Filing Date: 2016-09-20
CPC Classification: B60T,F16D

Claim Text:
1. A vehicle brake monitoring system comprising: a magnet mounted adjacent an end of a brake camshaft, the brake camshaft being rotatable during vehicle braking and causing the magnet to rotate; a first non-contact magnetic sensor spaced axially from the end of said brake camshaft and fixed in position relative to said brake camshaft, said first non-contact magnetic sensor configured to sense continuously rotation of said magnet during vehicle braking and generate corresponding output; a second non-contact magnetic sensor moveable with a slack adjuster during vehicle braking, said second non-contact magnetic sensor spaced axially from the end of said brake camshaft and configured to sense continuously relative movement of said magnet and second non-contact magnetic sensor during vehicle braking and generate corresponding output; and processing structure communicating with the first and second non-contact magnetic sensors, the processing structure configured to process the output of the first non-contact magnetic sensor to determine brake wear and process the output of the second non-contact magnetic sensor to determine brake stroke length.