SU781762A1 - Multichannel device for programme-control of an object - Google Patents

Description

The invention relates to automation and, in particular, to devices for automatic control of pulsed power plants (IEDs), the duty cycle of which is determined by a predetermined sequence of operation of various circuits and parts of the installation, switched by actuators when appropriate control signals arrive at them. software control of the IED, performed asynchronously, in KOTOJ OM for each control signal, act on the execute; 1 authority of the IED, in the definition SG timeslot at the time the actuation body ispolnitelnog generate a response signal, which is determined by the normal course of the control process. In the case of the absence of a response signal at the end of a set time interval, an alarm is generated. The closest technical solution to the proposed is a multi-channel device for programmed control of the object, containing the first trigger, the sequentially connected signaling unit, the first AND element, the first element OR and a protection unit connected to the control object, as well as a second trigger, the output of which is connected to the second input of the first element AND, in each control channel of the formate pulses connected by the output to the input of the executive body, and the control unit, whose information input is connected to the feedback sensor output of this control channel, the first output to the corresponding input of the alarm unit, and the second exit to the corresponding input of the first OR element connected to another input to the second output of the signaling unit, and in the first control channel, the second element I, the output of which is connected to the forward input of the second trigger, as well as to the control input of the control unit and to the input of the ers pulses of the channel, the first input of the second AND element is connected to the trigger input device and the second input to the direct output of the first flip-flop (2J. With the help of this device, control of the state of the executive body is provided not only during the control, but also before the pulse arrives at the trigger input.

Depending on the state of the IED, either prior to its start-up or after start-up, either they are given permission to start and go through the control program, or the control program is blocked and an alarm is generated.

However, after starting the device, in the event of an early activation of the actuator in any of the control channels, it may appear that the control program does not stop, despite the activation of the protection unit until the trigger signal is monitored in the control channel already worked. This disadvantage reduces the reliability of the device.

The purpose of the invention is to increase the reliability of the device.

This goal is achieved by the fact that the second OR element and the rear control channel, in addition to the first one, are entered into the device, the third element AND, the output of which is connected to the input of the pulse generator and with the control input of the control unit of this control channel, the first input of the third element AND of each channel the control is connected to the direct output of the first trigger, and the second input is connected to the third output of the control unit of the previous control channel, the direct input to the first trigger is connected to the output of the second OR element connected first and second s are inputs to the first output of the alarm unit and to the output of the first element OR, respectively.

Figure 1 presents the block diagram of the device; 2 and 3 are diagrams of control and signaling units, respectively. ,,,

The device (Fig. 1) contains an objec, controls 1, for example, a pulsed power plant, launching device input 2, third IZ elements, first element OR 4, protection unit 5, alarm unit 6, actuators 7, feedback sensors 8, drivers 9 pulses, the second element And 10 and the control units 11.

Each block 11 (FIG. 2) contains a time delay element 12, a third trigger 13, a fourth, fifth and sixth elements AND 14-16, outputs 17-19, an input | 20 input, a third element OR 21, and a control input 22 .

The signaling unit b (Fig. 3) contains the fourth triggers 23, the inputs 24, the fourth element OR 25, the first output 26, the summing amplifier 27, the threshold element 28 and the second output 29 ..

In addition, the device (figure 1) contains the first trigger 30, the second element OR 31, the second trigger 32 and the first element And 33.

The device works as follows. .

Before the pulse arrives at input 2 all., The device triggers are in the zero state, and elements 3 and 10 I are open. Outputs 17 and 19 of each block 11 are blocked, and exit 18 is unlocked using the corresponding elements I14-16. The signals at outputs 26 and 29 are missing.

The start pulse at input 2 through the element And 10 enters simultaneously

to the input 22 of the control unit 11 and to the driver 9, which generates a signal for the actuation of the actuator 7 in the first channel. Simultaneously, trigger 13 is translated.

In state 1, element 12 is activated, which is set to a time slightly longer than the normal response time of the actuator 7 in the channel. As a result, outputs 17 and 19 are unlocked, and output

18 blocked. At simultaneous triggering of the trigger 32, the element I 33 opens at the corresponding input, thereby connecting the output 26 of unit 6 to one of the inputs of the element

OR 4. In the case of normal operation of the executive body 7, i.e. response in the interval of the set time delay, the signal from the sensor 8 to the input 20

block 11, passes through the element AND 14 and the element OR 21 and sets the trigger 13 to the zero state, and the whole block 11 to the initial state. At the same time, this signal, via output 17, starts the next control channel. In the absence of a signal from the sensor 8 in the set time interval, the output signal of the element 12 through the element 16 and the output 19 is fed to the input of the element OR 4 and then n, and

input of block 5. At the same time, block 11 is set to its initial state and at the same time trigger 30 is triggered to a single state, blocking element 10 and element 3. This completes the interrupt of the control program.

The untimely occurrence of a signal at the input 20 of any block 11, for example, if the actuator 7 is accidentally triggered, does not lead to the launch of subsequent channels before the device starts up, since the output 17 in blocks 11 is blocked. Through the unlocked output 18 of the block 11 signal

arrives at the appropriate input 24

block 6 and, having passed through the element OR 25, the output 26 of block 6 and the element OR 31, transfers the trigger 30 to a single state. Inputs 22, as well as the inputs of the imaging unit 9, are blocked in all control channels. When a signal arrives at two or more inputs 24 of the block b, the corresponding triggers 23 are triggered, the signal at the output of the amplifier 27 exceeds the response threshold

Claims (2)

element 28 and output 29, an alarm appears that goes through element OR 4 to block 5, and through element OR 31 to a single trigger input 30, If the actuator 7 is not timely actuated in any channel after the TiycKa device, then the signal is generated to block 5 from the output of the AND 33 element or from the output 19 of block 11 of the corresponding channel, and the inputs of all drivers 9 are blocked. Blocking the start of the control unit and pulse generator when a malfunction occurs in the device due to a signal at the output of the signal unit. or by a signal at the input of the protection unit, increases the reliability of operation 1 of the entire IED control unit, since it completely excludes switching of any circuits in the IED at the time of the emergency situation. . A multichannel device for programmatically controlling an object, comprising a first trigger, a serially connected signaling unit, a first element and, a firstILE element OR and a readout unit connected to the control object, and a second trigger, the output of which is connected to the second bypass of the first element I, in each control channel a pulse driver connected by an output to the input of the executive body, and a control unit, the information input of which is connected to the output of the feedback sensor of this channel control, the first output with the corresponding input of the alarm unit, and the second one; a stroke with the corresponding input of the first OR element connected by another input to the second output of the alarm unit and in the first control channel the second AND element whose output is connected to the forward input of the second the trigger, as well as to the control input of the control unit and to the input of the pulse former of this channel, the first input of the second element I connected to the trigger input of the device, and the second input to the forward output of the first TE5 game, I distinguish It is because, in order to increase the reliability of the device, a second OR element is inserted into it and into each control channel, the first And third element, the output of which is connected to the input of the pulse former and the control input of the control unit of this control channel, element AND of each control channel is connected to the direct output of the first trigger, and the second input is connected to the third output of the control unit of the previous control channel, the direct input of the first trigger is connected to the output of the second OR element connected to the first m and second inputs to the first output and the signaling unit to the output of the first OR gate, respectively. Sources of information taken into account in the examination 1. The author's certificate of the USSR in application No. 2146235 / 18-24, class C. 05 V 19/02, 1976. 2. Author's certificate of the USSR in accordance with designation No. 2553790 / 18-24, class No. 05 V 19/02, 1977 (prototype). Fie.2 Fm.z