RU1833906C - Teleautomatics device - Google Patents

Abstract

The invention relates to telemechanics and can be used in data transmission systems for operation in explosive atmospheres. The purpose of the invention is to increase the information content of the device. The device contains a power supply unit, a power limiter, an initial synchronization pulse shaper, two clock pulse shapers, an information reception and transmission unit, two counters and a key, and a clock power supply and isolation unit, two clock shapers, and a control unit at each control point reception and transmission of information, pulse shaper and two counters. 1 ill.

Description

sl c

The invention relates to telemechanics and can be used in data transmission systems for operation in explosive atmospheres.

The purpose of the invention is to increase the information content of the device.

This goal is achieved by the fact that in a telemechanics device containing a power supply unit, a power limiter, an information reception and transmission unit, a first clock generator, at each controlled point a power supply and clock allocation unit, an information reception and transmission unit, a first clock generator pulses are entered at the control point of the second clock pulse generator, two counters, the pulse shaper initial

synchronization and a key, at each controlled point a second clock shaper, two counters, a pulse shaper.

The drawing shows a functional diagram of the device.

The device comprises a power supply unit 1, a power limiter 2, an initial synchronization pulse shaper 3, a first and second clock pulse shapers 4 and 5. at the control point, a first and second counters 7 and 8. a key 9. on each controlled paragraph a power supply and clock isolation unit 10. first and second pulse shapers 11 and 12, an information reception and transmission unit 13, an imula shaper. 14. first

oo

Cj w

h about

and the second counters 15 and 16. The signal limiter 2 contains resistors 17, 18. 19 and 20. Zener diodes 21 and 22.

The device operates as follows.

In the initial state, the power unit 1 provides, with remote power, remote controlled points of the telemechanics device. The resistors 19-20 and the zener diodes 21, 22 of the power limiter 2 limit the current and voltage in the communication line to mildly dumb values. For-. The clock clock clocks 5 and 4, together with counters 7 and 8, determine the duration of the CP operation cycle. The initial installation of these counters is performed by the initial synchronization pulse from the initial synchronization pulse shaper 3 to the control unit and 14 to the control unit, which achieves the common mode operation of the control unit with each control unit operating in turn. This function is implemented as follows. From the positive half-wave of the alternating voltage of the power supply unit 1, rectangular pulses are formed, which from the output of the clock pulse generator 5 fill the counter 8. The counter 8 operates in a cyclic mode. The length of the cycle is equal to the transmission time from all KP. By its output signal, the counter 8 starts the Initial synchronization pulse generator 3, which generates a short pulse, the phase of which is set in the region of the maximum positive half-wave voltage in the communication line. When such a pulse arrives at the base of the key 9, it opens and shortens the communication line through the open zener diode 22. As a result, one of the half-waves of the supply voltage in the communication line is cut into two parts.

At the CP, the positive half-waves arrive at the input of the clock driver 11, the negative ones at the input of the driver 12. When a positive half-wave appears, the first cut of counter 15 will work. Following the positive half-wave, it will be negative — set counter 15 to its initial state. When a positive positive half-wave appears, the pulse shaper 11 will generate two pulses. The second bit of counter 15 will work and will hold this state until a negative half-wave arrives. Consequently, the leading edge of the second bit of counter 15 at the control unit will correspond to the trailing edge of the initial synchronization pulse at the control panel. For normal operation of the counter 16 pulse with

the output of the counter 15 is shortened at the back by the pulse former 14.

The priority of the KP operation is determined by the counter 16. This counter from the clock sequence from the clock generator 12 forms a work cycle for each KP. The appearance of a pulse. At the corresponding output of the counter 16 allows the transmission of data of the corresponding gearbox.

Thus, the introduction of a new set of essential features into the prototype device allows to increase the information content of the telemechanics device and, as a consequence, its range.

Claims (1)

The claims A telemechanics device containing a power unit at the control point, the first and second terminals of which are connected to the first and second terminals of the limiter power, the third and fourth conclusions of which and the first and second conclusions of the block of information reception and transmission are combined respectively and are one ends of the first and second communication lines of the control center laziness of the device respectively first clock generator, at each controlled point, the first and second conclusions of the power supply and clock allocation and reception and transmission units are combined and are the other ends of the first and second communication lines, respectively, the first output of the power supply and clock allocation to the input of the first shaper 5 clock pulses, characterized in that, in order to increase information content, a second clock shaper, two counters, an initial synchronization pulse shaper and a key, the outputs of the first and second clock shapers are connected to the counting inputs of the first and second counters, respectively, whose outputs are connected to the control 5 inputs of the information reception and transmission unit and the initial synchronization pulse shaper, respectively, the first and second outputs of the last connected to the control inputs first 0 counter and key, respectively, the first and second outputs of the latter are connected to the first and fifth outputs of the power limiter, respectively, at each controlled point - the second clock generator, the first and second counters, pulse generator, the output of the first clock generator is connected to the counting input the first counter, the output of which is connected to the control via a pulse former the input of the second counter, the output of which is connected to the control input of the information reception and transmission unit, the second output of the power supply unit and the allocation of clock pulses through the second clock generator is connected to the control input of the first counter and to the count input of the second counter.