SU71483A1 - Device for automatic counting of occupancy cases - Google Patents

Description

The proposed device is intended to take into account the cases when subscribers of the automatic telephone exchange of the machine system of the Krasna Zary plant are busy when incoming calls come to them.

In contrast to known devices of this kind, the proposed device allows individual readings for any given subscriber.

In order to solve this problem, according to the invention, it is proposed to use a lamp circuit (e.g., a double triode) as a recording device, in the anode circuit of which the corresponding signal relays P and work, the combined operation of these relays gives the required reading using any counter (subscriber type).

The operation of the device is illustrated by the diagrams shown in

FIG. 1-3, where the standard Hbje designations adopted in the AiC schemes of the machine system are applied.

FIG. 1 is a diagram of a counting device.

FIG. 2 shows a test circuit of a linear drug connector and its TLS current distributor with the addition necessary for operation

a transformer counting device through which an alternating current of a tone frequency of 256 or 450 Hz is applied to a test circuit for direct current.

FIG. 3 shows a test circuit of the call finder IW and its TIV current distributor; no changes are made to it.

The lamp circuit is controlled as follows.

The tonal frequency current (buzzer current with a frequency of 256 or 450 Hz} through the coupling capacitor affects the first triode operating in the segment detection mode; the magnitude of the voltage drop on the PP separation switch at the point where the proposed device is connected is fixed by the second triode by applying an offset on the grid from point C.

Thus, the simultaneous action of both of these factors causes the two relays to operate in the anode circuits of the double triode, thereby closing the counter circuit and the countdown occurs. ,

To separate the effect of the current of the tonal frequency and the direct current on the grids of the lamp, one grid is taken to point C through strips219

telny capacitor, and the second - through a choke filter (choke and capacitor). The feeding of the lamp is carried out in any known way and is not of fundamental importance.

The subscriber's employment can be either when he called the station, i.e., the TIW and TIW are connected to his subscriber set, or when he was called, i.e., the LAN and LAN are connected to his subscriber set. In both cases, the PMI or PC- test relays are connected to the PP splitter at first moment with a 150 ohm winding and 300 ohm resistance, and then after one or another test relay each two 150 ohm windings each triggered (Fig. 2 and 3).

Since the mode of both trial PCs or PMi relays is the same, in our case both cases are actually reduced to one when the subscriber set is occupied by either the VL or the LAN.

The counting should occur in two cases: when the subscriber is taken and the TLS or LAN is connected to his subscriber set (the subscriber himself called the station and the TL is connected to his subscriber set) and when the subscriber set occupied by TLS and LAN is tried LS and CLW. Both cases are reduced to one — to the sample of the second CLW occupied by the subscriber set, since in both cases the connection failures must occur due to the subscriber's busyness. If the subscriber is free, then at a nominal battery voltage of 48 V at point C, the potential is 30.85 0; in the second, when the subscriber is occupied and a count is made, the potential at point C is 39.18 volts. The potential difference at point C is equal to 8.33 e, which makes it possible to reliably select the mode of operation of the rectifying lamp. Thus, when a sample is performed using a LAN, and the subscriber’s

is occupied from the side of the IV and TIV, in the proposed device both relays are activated and the counter is counted.

A similar action occurs when the subscriber is engaged from the LAN and the second LAN is connected to it. If the LAN is occupied by a free subscriber number (normal case when counting should not occur), then the P2 relay will work from the tone frequency current, while the second PI relay will not work, since the lamp will turn out to be locked, having a sufficiently large negative on the grid bias.

For operation of the device, a tone frequency current is supplied through a transformer, the secondary winding of which has minimal resistance (about 5 ohms) and inductance. Through this secondary winding of the transformer is supplied “plus batteries to the RSZ test relay circuit.

The proposed device does not require significant results in ATC schemes.

Subject invention

A device for automatically counting cases of subscriber of an automatic telephone exchange, characterized in that in order to obtain readings related to a given subscriber, a circuit with two electronic tubes and two counting relays PI and Pr, included in the anode values of these lamps, is applied which relay PZ reacts to the tone frequency current, which characterizes the fact of the production of the sample for occupancy, and the other relay PI responds to the voltage drop in the test circuit of the subscriber, so that the busy counter turns on the follower but through working contacts both relays and triggered only when the coincidence facts sample of the subscriber and its busy.

FIG. 2

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