SU642758A1 - Telemechanics system dispatcher's semiset - Google Patents

Description

This invention relates to the field of telemechanics. The dispatching half set can be used for the mechanization of distributed objects in industry. Telemechanical devices ly are known that contain at the control room discernors of the object state that change the polling mode of the controlled points. A disadvantage of this device is the low speed in the sequential polling of all objects. The closest to the technical essence of the proposed is device 2, the dispatching semi-kit of which contains a clock generator at the control point, the first output of which is connected via the automatic start block to the synchronization input of the first distributor, the first output of the last one being connected to the first output of the second distributor and connected with the first inputs of the command transmission block and the automatic call block, and the control key block whose output is connected to the second input of the transmission block mand. The second output of the second distributor is connected to the first input of the trigger and to the input of the sync pulse transmission unit, the output of which is combined with the first output of the command transmission unit and connected to the communication line and through the signal reception unit to the second input of the automatic call unit, the second output of the command transmission unit connected to the second trigger input whose outputs are connected respectively to the first inputs of the first and second elements And the second output of the first distributor is connected to the second inputs of the first and second elements And, the output of the first element And is connected to the clock input of the second distributor, the output of the second element And is connected to the blocking input the second distributor, the third outputs of the distributors are connected respectively to the third and fourth inputs of the automatic call block. A disadvantage of the known device is the low speed, due to the long cycle time of a complete survey of all objects. The aim of the invention is to increase the speed and reliability of the dispatching half-set of the telemechanical system.

This is achieved by adding additional control points to the control room, and a ban trigger and a third element I are introduced at each control point. And the second high-power clock generator is connected to the first input of the third element I, the output of which is connected to the clock input of the first distributor, the first the prohibition trigger input is connected to the output of the second element I of its control point and to the second input of the prohibition trigger of the next control point, the second input of the prohibition trigger is connected to the output of the second element D and to the first input flip-flop preceding control prohibition, prohibition latch output is connected to the second input of the third element I.

The block diagram of the dispatch half is shown in the drawing.

The dispatching half-set contains the distributors 1 and 2, the tact generator 3, the automatic start block 4, the clock transmission block 5, the command transfer block b, the signal receiving block 7, the control key block 8, the automatic call block 9, trigger 10, elements 11, 12 and 13, Ban Trigger 14 and Link 15,

The remote control system works as follows.

When the telemechanic system is turned on, the prohibition trigger 14 of the first control point 16 is turned on, and the interdiction triggers of the other control points are reset. The cocked-11th inhibit trigger enables the triggering of the element And 13 of the first control point. As a result, the unit is recorded in the first cell of the distributor 1 of the first control point using the automatic start block 4. Promotion of the unit in the distributors 1 and 2 is performed by the tact generator 3. So synchronization chip the signal was not transmitted to the communication link 15, then no state pulses were transmitted from the monitored points. The absence of the impulse of the duty mode from any controlled item indicates that there have been some changes on it. If the emergency mode pulses are absent from all monitored points, then q downloaded using the automatic call block 9 through the command transfer block b, the call pulses of the first controlled point are transmitted to the communication line. But his call does not occur as the synchronization signal was not transmitted for the first group of controlled items. When transmitting the call pulses of the first controlled point, the second output of the command transfer unit 6 receives 4piles to the trigger 10 input. The trigger 10 is energized and prepares the 11th element to trigger and prohibits the 12th element from triggering. Therefore, the 11th unit records the first cell of the distributor 2 When the last cell of the distributor 2 is activated, the synchronization signal for the first group of monitored points, which is different from the synchronizing clock, is sent to the communication line through the transmission unit of clock pulse 5. signals of the remaining control points.

When the last cell is triggered

the distributor 2, the automatic call unit 9 is reset, in which the control of the 1st points is not called, and the trigger 10 is reset.

The synchronizing signal is received by the controlled points of the first group and they transmit the state signals to the first control point during the operation of the distributor 1. If a

at the controlled point there is no change in the state of the objects, then the impulse of the duty mode is transmitted at the corresponding operation cycle of the distributor 1. If there is a change in the state of objects at the controlled point

then the duty pulse is not transmitted.

If a change in the state of objects occurred at any controlled point of the first group, then using the automatic call block

9, this controlled item is called and the state of objects on it is recorded. After this, the state of the controlled points is again polled in the standby mode.

In the absence of a change in the state of objects at all controlled points of the first group, they are not called; as a result, the trigger 10 remains in the reset state and

allows triggering element And 12 and prohibits triggering element 11,

When the last cell of the distributor 1 is triggered, the element E 12 is triggered. A pulse from its output records the unit to the last

Claims (1)

the distributor cell 2, resets, the prohibition trigger 14 of the first control point and cocks the interdiction trigger 14 of the second control point. The reset trigger prohibits the triggering of the AND 13 element of the first control point. The advance of the unit in the distributor 1 and 2 of the first control point stops and it stops working. The first group of controlled items is excluded from the work. The raised inhibit trigger 14 of the second control point allows its operation, and this control point performs maintenance of objects of the second group of controlled points in the same way as described above. After the second control point, the third comes into operation, after the third - the fourth, and so on. When the last control point stops working, the first one starts working again. The service time of one controlled point when using one control point with one common distributor is determined by the formula Obl / R 21y; and when using several control points for servicing the same number of controlled points - mule ,, A (l + 1) + n - 3p + 2rp where To. — service time, V — number of controlled points or number of cells in the address part the distributor when using a single control point, p is the number of objects at the controlled point or the number of cells in the working part of the distributor (i.e., the number of cells in the distributor 2), o is the time of operation of the distributor,. P - the number of control points. By service time is understood the time taken to search for a controlled point at which changes in the state of objects occurred, plus the time spent on calling this controlled point and registering the state of its objects. The difference between the service time of a single controlled point of the general control point and the time of service at several control points (A-pC-O. T - t 2H oWs oSw is maximal. The application of the proposed dispatcher half-set allows to increase the speed of the telemechanics system. Reliability of its operation increases due to the fact that upon leaving the line of one control point, information is lost only from the corresponding group of controlled points. reliability of their operation. By reducing the length of the valves, rigid synchronization of their operation is not required. The ability to work on one communication line of several telemechanical devices saves costly communication lines. Invention Dispatch half-telemechanical system containing the clock generator at the 86 point of control the output of which is connected through the automatic start block by the synchronization input of the first distributor, the first output of which is combined with the first output of the second races the control unit, the output of which is connected to the second input of the command transfer unit, the second output to the second para; the limiter is connected to the first input of the trigger and to the input of the transmission unit of clock pulses, the output which is combined with the first output of the command transfer unit and connected to the communication line and through the signal receiving unit to the second input of the automatic call unit, the second output of the command transfer unit is connected to the second input of the trigger pa whose outputs are connected respectively to the first inputs of the first and second elements AND, the second output of the first distributor is connected to the second inputs of the first and second elements AND, the output of the first element AND is connected to the clock input of the second distributor, the output of the second element And is connected to the blocking input of the second distributor , the third outputs of the distributors are connected respectively to the third and fourth inputs of the automatic call block, characterized in that, in order to improve the speed and reliability of the displays of the half-wheel-set of the telemechanical system, additional control points are entered into it, and each control point has a prohibition trigger and a third element AND, the second output of the clock generator is connected to the first INPUT of the third element Ti, the output of which is connected to the clock input of the first distributor, the first input of the trigger for; the preta is connected to the output of the second element And its control point and to the second input of the inhibit trigger of the next control point; the second input of the inhibit trigger is connected to the output of the second element The input I and to the first input of the prohibition trigger of the previous control point, the output of the prohibition trigger is connected to the third input of the third element I. Sources of information taken into account during the examination: 1. Issues of industrial telemekh 1970, S.124M., Energie Gutevich V.N , Telemechanika, M., 973, p. 333-341.