SU428550A1 - DEVICE CONTROL CODE FOR QUASI-ELECTRON AND ELECTRON AUTOMATIC TELEPHONE STATIONS - Google Patents

Description

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The present invention relates to telephony, in particular that it is intended for use in quasi-electric and electronic PBXs.

In the known devices, the control code from l performed on the switching elements, it is not possible to simultaneously code the code for each value with the formation of the corresponding signals. This is necessary, for example, to analyze the nature of the malfunction in the equipment leading to a code violation in one direction or another, as well as to reconfigure the monitoring device to a different value from.

It should also be noted that these schemes are combinational, as a result of which, as the value of and increases, the number of controlled combinations increases more than proportionally and the LOW volume of the device increases.

According to the invention, in order to expand the functionality of the code control device for quasi-electronic and electronic exchanges, a nmuls counter is entered fully into it as a measure of the duration of the PWM signal and the polling pulse generation unit of the counter state, in which the output of the discrete information conversion device is connected to the counter end input as the resolution pulse, and the output of the polling pulse shaping unit is connected to the additional inputs of the output counter rhenium duration.

FIG. 1 is a block diagram of the proposed device; in fig. 2 - functional scheme.

The code control device contains a discrete information conversion ycTpoii J, counter 2, used as a measure of the duration of the PWM signal, in block 3

forming a polling pulse

counter.

Device 1 is not converted discrete

the information contains a block of 4 input of information about the state of n points, a ring device 5 on l-f-l decades and a block 6 of generating the output signal; the duration of which is proportional to the number of callers

points.

The counter 2, containing the output circuits 7–9 of the sovnadash, is connected but to the breakaway input to the output of the SHIM signal formation unit 6, and their additional inputs are connected to the output of the polling pulse generating unit 3.

The ring device 5 is made on the trigger 10-J5, circuits 16-27 are connected, the input device, respectively, on the collective circuits 28-32. The PWM spgnal shaping unit 6 comprises a trigger 33, an inverter 34, and a matching circuit 35. The polling pulse generation unit 3 is implemented in a coincidence circuit 36, the inputs of which are connected to the outputs of trigger 10 and a coincidence circuit 27, respectively. The start of the counter 2 is carried out synchronously with the start of the ring device 5 from the clock tires I and P. The operation of the proposed device. Controlled points are connected to the inputs of collecting circuits 28-32. Suppose that in the initial state the annular device 5 of the conversion device 1 contains triggers 10-15 in the state "1, O, trigger 33 of the PWM signal generating unit 6 in the state" 1. In this case, the counter 2 is in the end and at the outputs of the circuits 7, 9, there is no coincidence of information. Let there be no calls in the points a, b, c, d, e (“1 - no call,“ o - call). The trigger 10, having switched from the input signal "1, is set to the state" O, 1. A unit from the right shoulder of the trigger 10 is fed to the input of the coincidence circuit 19, and after coinciding with the signal of the point b, the collecting circuit 29 switches the trigger 11 to the state O, 1. Then (all this happens during the same bus pulse I) trigger 12 triggers, then triggers 13, 14, 15. Thereafter, "1 from the right shoulder of trigger 15 arrives at the input of the matching circuit 16, and from the same pulse bus / switch trigger 10 to position "1, O (back to its original state), then lyuchats triggers 11, 12, 13, 14 n to "1, O. Now kind of the generation ceased, as inputs to a coincidence circuit 26 is connected II bus clock. Note that after switching the trigger 10 to the position "O, 1, the trigger 33 of the block 6 also switches to the position" 1, O. After the end of the heptation, the switching signal of the trigger 33 to the initial state "O, 1 is formed in circuits 34, 35. So as the call points a, b, c, d, e were absent, then you have the duration of the output signal of the PWM signal generation unit 6 equal to the initial duration of the output pulse. Let us show that the duration of the output signal of block 6 is determined by the expression .L + v, where A is a constant time interval (increment); 0 - the initial pulse duration; k is the number of calling points (for code control devices). Over time, counter 2 will not start counting, since the required time relation is not maintained. Let at any, for example, two points b and d, there be a call “-notes, i.e. control of the code“ 2 of n (in our case,) is provided. Upon the arrival of a pulse from the bus / trigger 10, it switches to the state "O, 1, from the right shoulder of this trigger" 1 will arrive at the input of the circuit 19 coinciding 1and. Since at the point b there is "O, at the second input of the circuit 19 of coincidence there is also" O. The trigger // PS switches to the state "O, 1 to those iiops, until the bus pulse through the collecting circuit 29 transfers the clock pulse to the circuit 19. At the same time, the time delay between the switching moment of the trigger 10 and // is provided. After the last switch, the trigger 12 switches to the "O, 1" state also after a time interval determined by the time shift between the pulses from the buses I and II. Then, after a similar time interval, the trigger 13 switches to the "O, 1" state, since at the input of the collecting circuit 31 (point d) there is an "O and the trigger 13 switches at the moment the pulse II arrives. After the aforementioned time interval, trigger 14 and trigger 15 are switched to the state "O, 1. Then, one after the other, in the generation mode, triggers 10-15 switch to the initial state" 1, since there are no calls at points a, c, e At the end of the cycle, as before, a pulse is formed on the output of block 6, the duration of which in this case is equal (since the code “2 out of 5). Counter 2, having received a permissive impulse from the output of block 6 equal in duration (2D + 9) to the breakaway input, starts the counting mode and during this impulse reaches up to two. At the end of the pulse from the output of block 6 in the coincidence circuit 36 of the polling pulse generation unit 3 of the counter state, a polling pulse is generated, which is fed to the inputs of the output circuits 7-9 of the counter 2, because during the PWM signal from the output of block 6, the counter 2 reached two , then only a read pulse will appear at the output of the coincidence circuit 8. If the input information code does not change ("2 pzl, where n is any integer), then for each cycle of the device / conversion operation, a PWM signal is generated that allows counter 2 to read the number of pulses, i.e., perform the function of a duration meter momentum. At the end of the ShIM signal, the counter is reset to the initial state and then again counts when the next enabling pulse arrives at the breakaway input. At the same time, information can be taken from the outputs of counter 2: with the code "1 from n - from the output of circuit 9, matches with the code" 2 from n - circuit 8, with code "3 from" - circuit 7, matches, etc. possible simultaneous removal of information about the nature of the input code. Thus, the device is universal, its circuit design is similar for any value of m and n, except that the number of inputs and outputs increases.

The amount of equipment of the proposed code control device increases as follows with a change in the numbers of t to n: as the number n changes, the volume of the equipment of the device / conversion of discrete information increases linearly as the proportional increase of the ring device 5 occurs; as the digit t changes, the equipment of counter 2 increases proportionally. For example, a code monitoring device "2 out of 10 compared to a code monitoring device" 2 out of 5 has only one and a half times the number of elements, since the device increases by a factor of two. without blocks 5 and 5), and device 2 does not change. It should be noted that simultaneously with reading the information, the health of the code "2 out (circuit 8 matches), information about the malfunction of the code and the nature of its malfunction is read (outputs of circuits 7, 9 ).

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PREDEME “for the sake of;

A code control device for quasi-electronic and electronic PBXs, comprising a node for converting discrete information into a PWM signal, consisting of serially connected n point information input units, a ring node for +1 decades, and a PWM signal generation unit,

the duration of which is proportional to the number of calling points, characterized in that, in order to expand the functionality, a pulse counter and a polling pulse shaping unit of the meter state are additionally introduced, the output of the discrete information transform node is connected to the counter baffle input, and the output of the polling pulse shaping unit is additional inputs of output diagrams of coincidence meter duration.

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