SU1635205A1 - Device for indicating actuator state - Google Patents

Description

(21) 4661124/24

(22) 03/10/89

(46) 03/15/91. Bksh. Number 10

(71) Kiev Institute of Automation. XXV Congress of the CPSU

(72) E.I. Malakhovsky, R.M. Melnichenko, A.K. Slavinsky and G.V.Kozhakin

(53) 654.9 (088.8)

(56) USSR Copyright Certificate No. 794651, cl. G 08 B 23/00, 1979.

USSR Author's Certificate number 1076932, cl. G 08 B 23/00, 1982.

(54) DEVICE FOR SIGNALING THE STATE OF EXECUTIVE MECHANISMS

(57) The invention relates to the automation of technological processes, is intended to selectively display information about the static and dynamic states of each of the actuators belonging to a group and can be used in control systems in the gas, chemical, energy and other industries. The aim of the invention is to expand the functionality of the device by providing selective signaling of static and dynamic states of the actuators. To do this, a device containing a pulse generator, Three AND elements, six OR elements, two sensors, respectively, of the first and second end positions of the actuators, Open Stop and Close tires, and three indicator lights, are entered from the second to the 5th sensors, respectively, of the first and second the final positions of the actuators, n blocks of I elements, n blocks of control signal supply, and the history of the state of the actuators and the element OR NOT. The device allows, without changing the number of light indicators, to selectively signal the static and dynamic states of the actuators controlled by three mutually exclusive commands Close, Stop and Open, i.e. At any time, for each of the actuators, depending on its state, provide the operator with the following positions: static - Open, Closed, In the intermediate half-open position, dynamic - Close, Open, 1 hp f-ly, 3 ill.

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The invention relates to the automation of technological processes, is intended to selectively display information about the static and dynamic i-fires of each of the actuators belonging to the group, and can be used in control systems in the gas, chemical, energy, and other industries.

The aim of the invention is to expand the functionality of the device. by providing selective signaling of the static and dynamic states of each of the group of actuators.

Fig. 1 shows a diagram of a device for signaling the state of actuators, Fig. 2 is a diagram of a memory block for supplying control signals and a history of the state of actuators, Fig. 3 is a diagram of a block for selecting actuators (for signaling their static and dynamic states).

The device for signaling the state of the actuators contains the elements OR 1 and 2, the light indicators 3 and 4, the sensors 5.1–5. Of the first end position of the actuators (for example, Closed), the element OR NOT 6, the light indicator 7, sensors 8.1-8. In the second end position of the actuators (for example, Open), the generator 9 pulses, element OR 10; Elements 11, 12 and 13, information supply buses 14, 15 and 16

control signals, respectively (Close, Stop and Open, blocks 17.1-17.P of the memory for supplying control signals and the history of the state of the actuators, blocks 18.1-, 18.p of the AND elements, block 19 of the selection of the actuators (for signaling their static and dynamic states) and elements OR 20-25, p - the number of actuators.

Blocks 18 are composed of elements AND 26-30.

Each of the blocks 17. 1-17.p. the memory of the supply of control signals and the history of the state of the executive mechanisms consists of the elements OR 31, 32 and 33, the triggers 34 and 35 and the elements 36-39.

The actuator selection unit 19 (for signaling) may be made in the form of a multi-position switch, for example, a foot-type switch providing selection of actuators, as well as from the controls (buttons 1KI 40-47 instantaneous) for selecting the number of the actuator, separation elements 48 -59 and remote switches 60 - 66.

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The actuator selection circuits for signaling are made using the switching contacts of the remote switches 60-66. If necessary, for example, by selecting the signal for signaling the state of the first actuator, momentarily pressing the button 40, power is applied to the first windings of the remote switches 60, 64 and 66 which work (remember their position) and switch the contacts to a position in which only the output 67.1 produces a signal 1. If necessary, barter select any actuator mechanism for signaling its condition can be used one of the outputs, such as output 67.p, and the button 47 is designated Reset.

The device works as follows.

Under the condition that any actuator is selected, for example, the first, to signal its state at the output 67.1 of the selector 19, signal 1 is generated by briefly pressing button 40, by means of which the DC supply voltage is simultaneously applied to the first windings of the remote switches 60, 64 and 66. The latter are triggered, held by the magnetic memory in this state, and with their switching contacts, connected by a so-called tree diagram (contact pyramid), form a circuit pa only one (in this case the first) actuator. The signal 1 from the output 67.1 of the block 19 of the choice is fed to the inputs of the blocks 17.1 and 18.1 and prepare them to work.

The state of the elements of block 17.1 depends on the initial state of the first actuator, as well as on the commands sent via information buses 14, 15 and 16 through the elements 27, 28 and 29 of block 18.1.

If signals 1 are supplied via information buses 14 and 16, i.e. Commands Close or Open, then the trigger 35 from its direct output outputs signal 1, otherwise signal O, if signal 1 is applied via the information bus 15, i.e. command stop. At the direct exit

Signal 34 is generated. Signal 1, if the first actuator is in the second final static position (Open) or via the information bus 14, the Close command is given.

A signal 1 is generated at the inverse output of the trigger 34, if the first actuator is in the first final static position (Closed) or the Open command is issued via the information bus 16.

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Let us take the initial initial polo (5 output of the element AND 39 of the block 17.1 forging) such a position of the first actuator, in which it is in the first final static, i.e. closed position. In this case, the 5.1 sensor positions the signal 1 through the element And 26 of the block 18.1 and the element OR 20 causes an even glow of the light indicator 3. The two other light indicators 4 and 7 are not illuminated, since the 8.1 position sensor and the OR-NOT 6 element output zero signals.

When signal 1 is applied via information bus 16, i.e. Open commands,

invert state, and trigger 35 to direct. Consequently, at the outputs of the elements And 37 and 38 of the block 17.1, long potential single logic signals are formed. At the same time, the control circuits (open, stop, and close are not shown in figure 1) are given the command Open to drive the first actuator. If the latter starts executing this command, then as soon as the 5.1 position sensor issues a zero signal, the 3 position indicator light goes out, and the 4 and 7 indicator lights are blinking, as potential input signals from the 13 element arrive at the input of the AND 13 element. NOT 6, elements OR 23 and 24 and the signal from the generator 9 pulses.

The flashing lights of the light indicators 4 and 7 indicate the transition process (movement) of the actuator towards its opening.

As soon as the actuator is fully opened, the 8.1 position sensor generates a single logic signal which, through the element

The signal 1 is measured, which through the element OR 25 enters the element And 12. As a result, the light of the indicator light 7 stops,

20 and the indicator light 4 is evenly lit. The half-luminescence of the actuator's mimic indicates an intermediate, semi-open static state of the mechanism.

In the case of the filing via the information bus 14 of the command Close triggers 34 and 35 of the block 17.1, they return to the direct state, as a result of which

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Signals 1 are formed, which through the elements OR 22 and 24 are fed to the inputs of element 11. The indicator lights 4 and 7 are turned off, and the indicator light 3 starts to flash with a blinking light, which indicates that the actuator is moving in the direction of closure. If the executable mechanism reaches its end position Closed, the flashing light of the indicator light 3 goes to steady, indicating the final closed state of the mechanism. If, during the movement of the actuator, a command - Stop is given again in the direction of its closure, the blinking light of the light indicator 3 stops, and the light indicator 4 lights with a steady light, indicating a half-open condition of the mechanism.

If during the movement of the actuator, in this case, the first, or during its static final or intermediate state, the selection unit 19 is transferred to another, e.g., nth position, the device is immediately switched to the display mode of this state.

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30 block 18.1 and the element OR 21 pos. blunt to the inputs of the elements OR 2 and 10. The flashing lights of the light indicators 4 and 7 translate into an even one, which indicates the full opening of the actuator.

If, before the completion of the full opening of the actuator, the Stop command is received via the information bus 15 in the vice signal 1, the actuator stops and the trigger 35 of the block 17.1 switches to the inverse state and

The signal 1 is measured, which through the element OR 25 enters the element And 12. As a result, the light of the indicator light 7 stops,

and indicator light 4 is a steady light. The half-luminescence of the actuator's mimic indicates an intermediate semi-open static state of the mechanism.

In the case of the filing via the information bus 14 of the command Close triggers 34 and 35 of the block 17.1, they return to the direct state, as a result of which

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full mechanism. When the block 19 is shifted to the position. The static state of the nth actuator is carried out in the E state, then the first (Closed) or second (Open) position of this actuator is displayed with a steady light from the light indicator 3 or the light indicators 4 and 7. In the case of transferring block 19 to the fifth position during the transfer (movement) of the nth actuator, the actuator moves accordingly to the first (3 closed) or second (Open) position by flashing a light on the light indicator 3 or the light indicators 4 and 7.

If, however, the transfer of block 19 to the 5th position occurs at the moment when the nth actuator is in a static intermediate (stopped) position, this is indicated by a half-luminescence of the mnemonic, i.e. even glow of the light indicator 4.

Claims (2)

1. A device for signaling the state of actuators, comprising a pulse generator, the output of which is connected to the first inputs of the first and second elements AND, the output of the first of which is connected to the first input of the first element OR, the output of which is connected to the first light indicator, the second input of the first element And connected to the second input of the second element AND, the output of which is connected to the first inputs of the second and third elements OR, the output of the second element OR is connected to the second light indicator, the third input of the first About element AND is connected to the third input of the second element AND and the first input of the third element AND, the output of which is connected to the second input of the third element OR, the output of which is connected to the third light indicator, the second input of the second element OR is combined with the third input of the third element OR, the fourth, the fifth and sixth elements OR, the first sensor of the first end position of the actuator, the first sensor of the second end position of the actuator and shea five Open, Stop and Close, characterized in that, in order to expand the functionality of the device by providing selective signaling of static and dynamic states of the actuators, the second to nth sensors of the first end position of the actuator, second to n, are entered into it sensors of the second end position of the actuator, n blocks of elements I and n blocks of the memory supplying control signals and the history of the state of the actuators, where n is the number monitored x actuators, the seventh, eighth and ninth elements OR, the block for selecting actuators and the element OR NOT, the sensors of the first end position of the actuator are connected to the first inputs of the same name blocks of elements AND whose first outputs are connected to the first inputs of the same memory blocks supply of control signals and the history of the state of the actuators and the same inputs 0 of the fourth OR element, the output of which is connected to the second input of the first OR element and the first input of the OR element, whose output is connected to the third input of the first AND element, 5 sensors of the second end position of the actuator are connected to the second inputs of the same blocks of the And elements, the second outputs of which are connected to the second inputs of the same name blocks of the control signals supply and the history of the actuators and the same inputs of the fifth OR element, the output of which is connected to the second input of the OR-NOT element and the third input of the third element OR, the third, fourth and fifth outputs of the AND blocks of the elements And are connected respectively to the third, fourth and fifth inputs dnoimennyh memory units supplying control signals and state history of the actuators, the first, second, third and fourth outputs of which are connected to the inputs of the same name, respectively shesto0 seventh, eighth and ninth elements OR, the outputs of which are connected respectively to the fourth input of the first element AND, the fourth 91 the input of the second element And, the second input of the second element And and the second input of the third element And, the outputs of the actuator selection unit are connected to the sixth inputs of the same memory blocks of the control signals supply and the history of the actuators and the third inputs of the same blocks of the elements And busbars Close , Stop and Open are connected respectively to the fourth, fifth and sixth inputs of the blocks of elements I. 2. The device according to claim 1, characterized in that each block of supplying control signals and a history of the state of the executive mechanisms is made of three OR elements, four AND elements and two triggers, the first input of the first OR element is the first input of the block, the output of the first element OR is connected to the first input of the first trigger, the first output of which is connected to the first input of the first element AND, the output of which is the first output of the block, the first input of the second element OR is the second 510 the input of the block and connected to the first input of the third OR element, the output of which is connected to the second input of the first trigger, the second output of which is connected to the first input of the second element AND whose output is the second output of the block, the second input of the third OR element is the third input unit and connected to the second input of the second OR element, the output of which is connected to the first input of the second trigger, the first output of which is connected to the first input of the third the AND element, the output of which is the third output of the block, the second input of the first OR element is the fourth input of the block and is connected to the third input of the second OR element, The second input of the second flip-flop is the fifth input of the block, the second output of the second flip-flop is connected to the first input of the fourth And element, the output of which is the fourth the output of the block, the second input of the fourth element I is the sixth input of the block and connected to the second inputs of the first, second and third elements I. phi.1 at FIG. 2 fig.Z Well 35 L