RELAY-COMPUTER INTERLOCKING Russian patent published in 2005 - IPC

FIELD: railway signaling and communication.

SUBSTANCE: invention is designed to control switches and signals. Three personal computers are furnished with control elements and are connected by double ring communication. Three checking relays are provided designed to check operation of personal computer, capacitor circuits, control relays and input circuits from object state checking relays. Three interfaces are provided additionally, being connected with computers, input circuits of object state checking relays and winding of control relays through contacts of checking relays. First interface is connected with control relays through front contact of third checking relays and capacitor circuit. Second interface is connected with control relays through rear contact of third checking relay, parallel connected front contact of first and second checking relays and capacitor circuit. Common checking relays is made for checking correspondence between attempt of excitation of set of control relays and their actual excitation. Said common checking relay is connected similar to connection of control relays and its front contact is placed in circuit of control objects in series with contacts of control relays. In process of functioning of proposed interlocking system, checking relays select personal computer to which control relays are connected.

EFFECT: improved traffic safety.

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