SU262980A1 - - Google Patents

Description

The invention relates to the technology of service control communication, which is the basis of operational management, and can be used in systems of service dispatch communication of complexes of means of the most various purposes and, first of all, of mobile complexes of means.

The known service-dispatch communication devices operate either via cable lines only, or only over radio channels and do not provide simultaneous connection of radio channels and cable lines, as well as selective calling of radio channels, cable lines and composite channels of cable and radio lines without intermediate conversion call and bounce signals.

These devices do not even have a single workplace with the same manipulations, they do not allow negotiating and moving together with the operators of the IB.

In the proposed device for a radio-wire loudspeaker circular-selective communication, these drawbacks are eliminated by equipping a single workplace with telephone and loudspeaker intercom nodes, selective calling devices, etc.

The device is characterized in that a loudspeaker telephone node containing a return speaker with a transmitting and receiving amplifier is connected to radio and wire lines through a switching unit, which is connected to the outputs of common selective elements and non-selective elements fixed to the lines through control inputs remote control. To the second input of the telephone intercom node, a line is connected from the car: a mathematical telephone station, passing through the contacts of the dialer.

FIG. 1 shows a block diagram of the device; in fig. 2-principle scheme.

The device is part of the equipment of a unified radio-wire-superscript communications system as a group console.

The device contains a loudspeaker unit}, which includes a reversible speaker 2 with transmit amplifiers 3 and receive 4; a telephone intercom unit 5 consisting of a microphone tube and a differential transformer; block 6 selective devices, consisting of pz receivers of tonal selective and circular ringing signals; a control unit 7, in which a fixed frequency generator is included, buttons and a relay; switching unit 8, consisting of universal sets of 9, 10, 11 prs;: ONE lines AND set 12. п, l of connection of a simplex radio station; a block 13 of non-selective elements, consisting of non-selective receivers 14-17 of the tonal spectrum signals; block 18, consisting of switching elements 19-22 (relay contact springs).

Wire sets 23, 24, 25 are connected to sets 9, 10 and 11, and line 26 from the radio station is connected to set 12. Line 27 from PBX via dialer 28 is connected to the intercom node 5.

In the original field, the devices included in the service dispatch communication system are in the mode of receiving calls, inductive and tonal selective.

Before sending a selective call over a wired line, one (any) of the subscribers of the group must switch the key 29, included in the package 9, to this line to the upper position. At the same time, relays 30 and 31 are triggered and the node speaker is connected / via receiving amplifier 4 to a talker to determine whether it is linin by listening. If the line is free, selective calling of the tones of the two frequencies (defined for each subscriber) is sent by briefly pressing button 32, which ensures that the filter 33 of the corresponding frequency is connected to the tone call generator 34.

Pressing the call button will also trigger the time relay 35, the load of which is the electromagnetic relay 36. The contacts of this relay open the power supply circuit of the relay 31, disrupting its blocking, and connect the generator output to the talker. The contacts of the relay 31 are conversational, and therefore the line will also be switched from the input of the receive amplifier to the output of the transmission amplifier and the call generator. As a result, a two-frequency call signal will be sent to the line from the general output of the generators.

With the return of the time relay 35 to the initial position, the ignition circuit of the light bulb 37 with the words "the microphone is turned on as well." the output of the call generators is disconnected from the line, even if the cash: press the button and continues. Further, the call is made by voice.

The calling device of the called subscriber reacts to the selective call signal, in which the audible and light alarms are triggered.

To answer, it is required to transfer into the working position the key of the set of the line from which the call was made, and shortly until the light bulb 37 is turned on, press the "send" button. In this case, a tone signal for the forced transfer of the device of the caller to the reception will be given to this line from the output of the call generator. This signal is always transmitted at the same frequency. Its duration is also determined by the time relay.

a speaker device permanently connected to the talker (the key of this line in the calling party's device is also in the working position), the contacts of which 38 also close the relay 31 power supply circuit. The line of the calling subscriber will be connected to the input of the receiving amplifier. It is possible to respond. Further, the cycles are repeated. Thus, negotiations are conducted in the mode

“Simplex with interrupted tone. Wireline kits can include lines from telephone exchanges of other systems, provided these devices provide a call for inductor or direct current, as well as lines from MBs. To negotiate these lines, the keys 29 need to be moved to the down position and use the handset.

The reception and fixation of ring tones from a simplex radio link is similar.

Negotiations on this radio link are conducted with the help of a handset in simplex mode without interruption, since radio stations are simplex. Conversation circuits are formed by using the key of the radio kit. As can be seen from the diagram, the radio station is connected in the mode of the remote unit and is translated

to transfer by short circuit of the direct current through the choke at the talker valve.

Wired calling can also be carried out by inductor and

direct current by pressing the corresponding buttons. The call of the central console, in which the device described is included, is made by direct current. Provision is also possible.

call center.

Subject invention

A device for a radio-wire loudspeaker circular-selective communication, which includes ring generators and receivers, a telephone and loudspeaker telephone unit, a dialer, keys and a relay, characterized in that

in order to improve speech quality when conducting circular-selective negotiations both by radio and by physical circuits with drastically different parameters with devices of various communication systems, a call center,

a reversible speaker with a transmitting and receiving amplifier is connected to radio and wire lines through a switching unit, which is connected to the outputs of the common selective and fixed to non-selective elements and control panel through control inputs, and the second input of the telephone the call center is connected to the line from the automatic telephone station, passing through contact 27

L AL A

232