SU545094A1 - Relay set of connecting lines for communication with special services - Google Patents

Description

The invention relates to telephony and is intended for communication of subscribers with special services, such as ambulance, police, etc. The relay connector line for communication with special services is known, which contains a busy relay and a source of call signal. However, the well-known kit has a large number of false calls to the special services. The purpose of the invention is to reduce the number of false calls of the special services. For this purpose, a relay relay, a time delay block and an executive relay are additionally introduced in the relay connection set for communication with the special services, and from the two windings of the pulse relay, they are connected through the break contacts of the executive relay to the corresponding wires of the set input time is connected to the switching relay of the pulse relay connected in series and the closing relay contact to occupy, and an executive relay is connected to the output of the time delay block, closing the s contact which is entered in the call signal sending circuit. The drawing shows a functional diagram of a relay connection set for communication with special services. This relay kit contains, in the occupancy wire of 1 relay, occupy 2 with closing contacts 2/1, 2/2, 2/3, impulse relay 3, having one winding, included in the wire 4 lines at the input of the set, the second winding, included in wire 5 lines at the input of the set, and the third blocking winding in the local circuit 6, as well as the opening contact 3/1 and the closing contact 3/2; subscriber relay 7 having one winding in wire 4, the second in Wire 5 with switching contacts 7/1 and 7/2 and closing contact 7/3, executive relay 8c with closing contact 8/1, switching contact 8/2 and disconnecting contacts 8 / 3 and 8/4, holding the relay 9 with the opening contact 9/1 and the switching contact 9/2. The time delay unit 10, the call signal source 11 and the separation capacitors 12 and 13. The closing contact 2/1 of the relay occupation 2 in series with the contact 3/1 of the pulse relay 3 is connected to the start circuit of the time delay 10. Block 10 gives an output pulse, for example, ten seconds after launch. Executive relay 8 is included in the output circuit of the unit 10 through its own blocking switching contact 8/2. The two windings of the pulse relay 3 are connected to wires 4 and 5 through the corresponding disconnecting contacts 8/3 and 8/4 of the executive relay 8, and the blocking winding of the pulse relay 3 is switched on via its own closing contact 3/2, the closing contact 2/2 of the relay 2 and quiet springs of the switching contact 7/2 of the subscriber relay 7. The holding relay 9 operates through the operating springs of the switching contact 7/2 of the subscriber relay 7 and the closing contact 2/3 of the relay occupancy 2. The second winding of the subscriber relay 7 is connected to the battery pole directly but, and the first coil of this relay is connected to the opposite pole of the battery through the switching contact 9/2 of the holding relay 9 and the closing contact 8/1 of the executive relay. The source 11 of the call signal, combined with one of the battery terminals, is thus connected to the output of the kit (from the operator of the special service) also through the closing contact 8/1 of the executive relay 8. The capacitors 12 and 13 separate wires 4 and 5 in DC kit, in particular, ensuring the independent operation of the impulse relay 3 and the subscriber relay 7.

Works relay set of connecting lines as follows.

When the set is occupied by the wire 1, the relay 2 is activated, the closing contact 2/1 of which starts the time delay block. If the subscriber actually called the special service, dialed the number of digits of the number that characterizes the exit to the special service, then stopped dialing the number, then the 3-pulse impulse relay will not work, because all the impulses are absorbed by the equipment included in the kit. After a certain time, for example, ten seconds, the output signal from time delay block 10 appears, from which actuating relay 8 is activated, which is blocked through its switching contact 8/2 and disconnecting contacts 8/3 and 8/4 disconnects from wires 4 and 5 pulse relay 3, and the closing contact 8/1 to the output of the kit connects the source 11 of the signal of the call that is not editable to the service operator. When the operator responds, the subscriber relay 7 operates in the slave, which connects wires 4 and 5 in the kit for conversation and creates a work circuit to the holding relay 9. The holding relay 9 with its switching contact 9/2 puts the subscriber relay 7 into a holding circuit not dependent on the effective relay 8. There is a conversation between the subscriber and the operator, after which they hang up and release subscriber relay 7, which releases the holding relay 9 and

relay job 2, and from it, the executive relay 8. The relay set returns to its original state.

If the subscriber didn’t mean to call the special service, but made a mistake while dialing but: hierra, or the numbers he typed was perceived as safe by the standard equipment as belonging to the special service (as a result, the subscriber turned out to be connected to the set) work from the pulses of digits of the number that the caller continues to dial. At the first actuation, the impulse relay 3 is blocked by its blocking winding included in the local circuit and terminates the starting value of the block.

10 time delay. Therefore, the executive relay 8 does not work, and the operator does not receive a signal and send the call.

Claims (1)

Invention Formula A relay trunk of connecting lines for communication with special services, containing a relay of occupancy and a signal source for a call, characterized in that, in order to reduce the number of false calls of a special service, r. it additionally introduced a pulse relay, a time delay block and an executive relay, each of the two windings of the pulse relay is connected through the disconnecting contacts of the executive relay to the corresponding wires of the line at the input of the set, the time delay block input is connected to the series opener the contact of the pulse relay and the closing contact of the relay are occupied, and an output relay is connected to the output of the time delay unit, the closing relay of which is inserted into the call signal sending circuit. .2 k