A microcomputer-operated air brake control system for controlling the air brakes of a railroad car in a train is disclosed. The system includes a plurality of pressure sensors pneumatically connected to various points in the air brake system of the car and electrically connected to the input of the microcomputer....http://www.google.fr/patents/US4344138?utm_source=gb-gplus-shareBrevet US4344138 - Digital air brake control system
