SU978382A1 - Automatic dial for emergency calling of subscriber - Google Patents

Description

one

The invention relates to an automatic telephone communication technique and can be used in alarm or burglar alarm systems for emergency communication with a central point over a public telephone network.

A device for automatically calling ATS subscribers, comprising a relay unit, a switching field, with vertical and horizontal buses, a pulse train distributor, an AND element, a pulse sensor, an isolation unit and a power supply unit, is known.

However, when there are a large number of digits in the number, there is a need; imo has a large number of horizontal needles, which leads to a significant increase in the size of the switching floor. In addition, a large number of switching points conditions the number programming operation and reduces the reliability of the device.

The purpose of the invention is to increase the reliability of the device by reducing the number of switching points.

To achieve the goal, an automatic dialer for an emergency call of the subscriber, containing a relay unit, a switching field, a pulse train distributor and an AND element, introduced the first and second triggers, a reversible counter, a switch, and a generator.

10 an inter-series time switch and a switch, the dial pulse bus is connected to the clock input of the first trigger and to the first input of the I element, the second input of which is connected to the output of the first trigger and the output of the I element connected to the clock input of the series distributor. pulses and to the first input of the relay

25 block, the second input of which is connected to the output of the second trigger and with the information input of the first trigger, the reset input of which is connected to the first wo.

by a galloping input of the distribution.) itel of a series of pulses, a counting input of a reversib} south -.meter and an output of an inter-series time generator, the first input of which is connected to the input,: the unit of the second trigger and the installation input of the reversing counter, hectare 14) corresponding contacts of the switch, and the information outputs of the reversible counter are connected to the address inputs of the switch, the output of which is connected to the second input (the inter-series time slot, and the information input the switch is connected to the corresponding terminals of the second 1S switching line, the plug of the first line of which is connected to the corresponding outputs of the pulse train distributor, the second installation input of which is connected to the reset input of the reversing and inverse output of the second trigger, the reset input of which is connected to the output of the reversible counter Fig. 1 is a structural electrical circuit of the device; Fig. 2 is an example of encoding an eight-digit telephone number. The automatic dialer for an emergency call of the subscriber contains the first trigger 1, element II 2, f switch 3, distributor 4 series pulse, reversible counter 5, com mutation field 6, switch 7, shaper 8 inter-serial time, second trigger 9, relay block 10, first line 11, second line 12. The telephone number is encoded in the switching field 6, which consists of two lines 11 and 12 with clips, with the first line 11 containing ten clips marked with numbers 1, 2, 9, O, and the second line 12 consists of the clamps, labeled with numbers from 1 to hi, where I is the largest number of numbers in a telephone number. The Canada digit number is encoded by connecting the jumper to a lock on a ruler 12, corresponding to the sequence number of a digit with a clip on a ruler 11 corresponding to its value. The automatic dialer for an emergency call of the subscriber works as follows. In the initial state, the trigger 9 is set to zero, and the potential from its inverse output is held by the reset input reversing counter 5 and set

Claims (1)

At the start of the mkhota - psk: p) 10politrol (let's pulse, -I low potential from the direct trigger 9 enters the input of the relay block and to the OUTPUT) of the trigger 1, which is set to zero at the clock input C due to the continuous clock of the dial clock numbers. The potential 1 trigger from the direct output blocks the passage of clock pulses through the element I 2 to the distributor of 4 series of pulses and the relay block 1O. On the leading edge of the pulse on. The trigger 9 is set to one in the start-up block; the relay unit closes the switch, and a high potential appears at the input 5 of the trigger 1, but since the second input starts the inter-series time shaper 8, it will generate a 500 ms signal with the output of the driver 8, the trigger 1 and the distributor 4 of the pulse series are kept in their initial state. On the leading edge of the START pulse, an entry is made in the reversible counter 5 of the code of the number dialed on the switch 3 and the corresponding number of digits in the number, and on the trailing edge of the pulse from the interserial time generator 8, one is subtracted from the contents of the reversible counter 5. Thus, on the information outputs of counter 5, a code and 1 (where the number of digits in the number) appears, which goes to the address inputs of switch 7, and the latter selects the information input connected to the corresponding terminal in the second line 12 on the switching field 6. At the end a 500 ms pulse from the imaging unit 8, the leading edge of the first pulse arriving along the dial of the dialing cycles, is thrown into the trigger 1 and the pulses: dialing through the AND 2 element arrive at the clock input of the distributor of 4 series of pulses and ervy input relay unit 10, is opened whereby schleyf several times; the number of trips in this case corresponds to the first digit of the dialed number. Clock pulses appear successively at the outputs of the distributor of 4 series of pulses, as well as at the corresponding terminals of the first line 11 on the switching field 6, with the last pulse of the series through the jumper falling on the clip of the second line 12 and then through the switch 7 to the input of the driver 8 inter-series time, which runs on the trailing edge of the clock pulse and resets the distributor of 4 pulse series and trigger 1 to the initial state. After 5OO ms, one unit is subtracted from the reversing counter 5 and the whole process is sec. After the last digit of the number has been dialed, the pulse from the output of the intergenerator 8 is fed to the loan of the reversible counter 5 and then to the input I of the zero setting of the trigger Y, and the entire circuit returns to its original state, from which it can exit only at the next command START. Thus, the proposed device, in comparison with the prototype, has only two lines of clamps on the switching, field, which allows to significantly reduce the size of the switching field itself. The process of programming a phone number is simplified. With any number of digits in the programmer number, the number of switching points does not exceed 10 + V1, whereas the prototype of the required number of switching points is lOVl, therefore, with a large number of digits in the number, the proposed automatic dialer will have a higher reliability than the prototype, small switching sizes the floor and the proposed structure allows you to make an automatic dialer compact, and place it in any hard-to-reach place, which is especially important when using a dialer l in security systems. Claims of the Invention An automatic dialer for an emergency call of a subscriber, comprising a relay unit, a switching field, a pulse train distributor, an AND element differing in one. that, in order to increase reliability by reducing the number of switching points, the first and second triggers, a reversible counter, a switch, an inter-run time generator and a switch are introduced, the dialing pulse bus is connected to the clock input of the first trigger and the first the input of which is connected to the output of the first trigger, and the output of the element I is connected to the clock input of the distributor of a series of pulses, and to the first input of the relay unit, the second input of which is connected to the output of the second trigger and the information input of the first trigger, the inrush input of which is connected to the first installation input of the distributor of the pulse series, the counting input of the reversible counter and the output of the interserial time generator, the first input of which is connected to the input of the installation unit No. 2, the second trigger and the installation input of the reversible counter, information the input of which is connected to the corresponding contacts of the switch, and the information outputs of the rotated counter are connected to the address inputs of the switch, the output of which with one with a second input of mezhseriynogo time and data inputs connected to the corresponding terminals of the second line of the switching field, the first terminals of which are connected to the line output of the distributor respective series of pulses of the second adjusting input. which is connected to the reset input of the reversible counter of the IC by the inverse output of the second rigger, the reset input of which is connected to the output of the loan of the reversible counter. . Sources of information taken into account during the examination 1. USSR Author's Certificate No. 592021, cl. H 04 M 1/26, 1978 .. Vx Оhft 9ffrfyn9 99ejf ff,