BRAKE MONITORING SYSTEM

摘要

A vehicle brake monitor (42) for a brake actuator (20). The brake monitor includes a magnet (54) and a sensor (50) located within the magnetic field of the magnet and fixed relative to housing (22), and a shunt (58, 60) which is reciprocal with a brake actuator rod (28) between the magnet and the sensor which interrupts a signal between the sensor and the magnet when the shunt is located between the magnet and the sensor during reciprocal movement of the rod, signaling at least one position of the rod relative to the housing. The brake monitor includes a sensor sleeve (44) having two pairs of opposed magnets and sensors and a shunt sleeve (46) surrounding the brake actuator rod having a pair of circumferentially spaced shunts which reciprocates with the actuator rod between each of the pairs of sensors and magnets, sensing an overstroke condition, brake drag, failure and normal operation.