| 摘要 |
An electric emergency signalling system containing transmitters, diodes, signalling lights, a switch, an electric or electronic impulser and a control button The system is distinctive in that blocking transmitters (PB1, PB2,..., PBn) are connected through connecting coils (1) to diodes (DB1, DB2,..., DBn) and a delay contact (PC2) of a time relay (PC); the same transmitters are connected through blocking coils (2) with an active contact (K2) of a control button (K) and a terminal of a power source; the control button (K) is connected with a delay contact (PC1) of a time relay (PC) through a passive contact (K1); connected to the time relay (PC) are output diodes (D1, D2,..., Dn) which receive emergency signals from sensors, while terminals of the power source are connected through a connecting element (EZ) with an electric or electronic impulser (IE), the latter being combined with a signal transmitter (PA) whose passive contact (PA1) switches on the signalling lights (L1, L2,..., Ln) through contacts of the blocking transmitters (PB1, PB2,..., PBn).<IMAGE>
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