Backup control technique for 20 pipe braking system

Details Backup control technique for 20 pipe braking system Backup control technique for 20 pipe braking system

B - Operations, Transporting

60

T

B60T 15/36 (2006.01) B60T 13/66 (2006.01) B60T 17/22 (2006.01)

Patent

CA 2212911

In a microprocessor-controlled electro-pneumatic brake control system for a railway train, pressure in the brake cylinder is maintained despite the loss of pressure in the "20 pipe" brake line, or failure of a key relay valve that controls pressure to that brake line. Feedback signals derived from the "20 pipe" brake line when found to be inappropriate after a predetermined amount of time are substituted for by brake command signals generated by the brake controller.

Dans un système de commande de freinage électro-pneumatique commandé par microprocesseur utilisé dans un train, la pression dans le cylindre de frein est conservée malgré la perte de pression dans la canalisation de frein de la conduite générale (20) ou la défaillance d'une valve-relais clé qui régit la pression vers cette canalisation de frein. Les signaux de retour provenant de la canalisation de la conduite générale (20) lorsqu'ils sont jugés inappropriés au bout d'une durée prédéterminée sont remplacés par des signaux de commande de freinage produits par le dispositif de commande de frein.

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