| 摘要 |
<p>A monitoring and safety system (10) for air-operated parking brakes and foot brakes on a vehicle employs electric contacts (72, 74; 83, 84) to provide alarms (31-36) when movement of the actuators (11-14) occurs in a manner indicative of failure or malfunction in the actuators (11-14) or in the brakes themselves. The system (10) also includes a number of air pressure sensors (37-40) for monitoring and alarm functions. In addition, parking brake air pressure is monitored (45) for purpose of overriding a movement sensor alarm (31) when air pressure in the actuator (13, 14) indicates that the vehicle is parked.</p> |
