SU1374264A1 - Apparatus for signalling and controlling two-position actuating mechanism - Google Patents

Abstract

The invention relates to the field of automation of technological processes, is intended to be used as a means of displaying information on mnemonic diagrams of the end positions and movements of shut-off and the like two-position actuators having control bodies of their final states, and also to control these mechanisms, and can be used in local and centralized monitoring and control systems in the pelvic, chemical. energy and other industries. The aim of the invention is to increase the information content and the field of application of the device due to the possibility of its use for mechanisms with different speeds. . To achieve the goal, a device containing two control buses, two information buses, two control outputs, four AND elements, three OR elements, two position indicators, two memory elements and the first delay element are entered into the fourth OR element, four AND-NOT elements. , the second element of the delay, the eight elements And And the pulse shaper. Depending on the position of the actuator, as well as the time of its transition from one state to another, the position indicators are either not illuminated, or the light is even or blinking, and B, depending on the serviceability of the mechanism, they blink. both with a duty cycle equal to two, and with a duty cycle more or less than two. Depending on the difference in the nature of the glow, the direction of movement of the actuator is determined. 1 3.p. f-ly, 2 ill. (/)

Description

The invention relates to the automation of technological processes. It is intended to use as a means of displaying information on mimic diagrams of the final positions and movements of the shut-off and other like two-position actuators having control bodies of their final states, and also to control these mechanisms, and can be used in local and centralized control and management systems in the gas, chemical, energy, and other industrial sectors.

The purpose of the invention is to increase the information content and expand the field of application of the device due to the possibility of its use for mechanisms with different speeds.

FIG. 1 shows a diagram of a device for signaling and controlling two-way executive mei via information bus 16 to inputs of elements I 23 and 25, as well as to input of element 3 of a signal memory

1. In the same initial state, the closing contact of the sensor of the second end (open) position is open, which corresponds to the flow through the data bus 17 to the inputs of the And 24 and 26 elements, as well as to the input of the 4th element of the signal O. As a result, the indicator 7 of the first the final (closed) position through the elements And 25 and IL 33 will be highlighted even

light, and the indicator 8 of the second end (open) position turns off –1 s, since the output signals of memory elements 3 and 4 are equal to O (memory element 4 stores the memory of the previous

the open position of the actuator, at the input of the memory element 3 there is a signal 1. coming from the information bus 16), and, therefore, O are equal and the signals to

chanisms; in fig. 2 - diagram of the form-25 outputs of the elements 10 and 31 of the delay.

Pulse block of various porosity.

The device contains control buses 1 and 2 (for example, Close and Open, respectively), memory elements 3 and 4, control outputs 5 and 6, 7 position indicator (first end position indicator, for example, Closed), 8 position indicator (second end indicator, position, for example, Open), pulse generator 9, delay element 10, elements 11-14, element 15, information bus 16 for generating the actuator position signal (for example, Closed), information bus 17 for shaping the actuator position signal ism (for example, Open), shaper 18 pulses of different porosity, elements AND NOT 19-22, elements AND 23-30, element 31 delay, elements of DPI 32-34.

The shaper 18 pulses of different duty cycle is made of trigger 35, element AND 36 and element OR 37.

The device works as follows.

The condition that the actuator is in the first end position (closed) is taken as the initial state, which corresponds to the closed state of the closing contact of the sensor of this position

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The presence of signals O at the outputs of elements 10 and 31 of the delay generates signals 1 at the outputs of elements NAND 19-22, and signals O at the outputs of elements 13 and 14, 27 and 28.

If it is necessary to transfer the actuator from the first (closed) to the second (open) position, a signal 1 is applied to the control bus 2. As a result, the output of the second memory element 4 generates a signal 1, which is fed to the inputs of elements And 14, 23 and 28 and elements AND-NOT 20 and 22, preparing them for work. In addition, this signal through the elements OR 15 and 32, respectively, is fed to the inputs of the elements 10 and 31 of the delay, and also allows the signals from the pulse generator 9 to pass through the indicator 8 of the second end position, which is blinking, through the elements AND 12 and OR 34. At the same time, from output 6 of the control of the device, signal 1 is fed to the actuator drive. This state corresponds to the steady light of the indicator 7 of the first end position and the flashing light of the indicator 8 of the second end position.

If, when a command is sent to bus 2, the command is not executed for any reason and the signal on the first information bus 16 does not change, then after a time equal to the response time of delay element 31, the inputs of the IS-NE 21 and 22 and elements Both 27 and 28, a signal 1 appears, which through the IS-NOT element 22 prohibits the passage of a signal of a uniform luminescence through the element 25 to the position indicator 7 and a signal generator 9 of the pulses through the element Q Q 12 to the position indicator 8. At the same time, the same signal through the And / 28 element also permits the passage to the indicator 7 of the position of the small-duty signal from the output of the driver 18 pulses. Thus, as a result of the operation of the delay element 31, the position indicator 7 begins to glow with a flashing light, at which the duration of the glow exceeds its on state. This indicates that a failure occurred in the control circuits when giving the command to transfer the actuator from the first (closed) to the second (open) position.

The display of this information on the position indicator 7 is preserved even when, after a time determined by the response time of the delay element 10, a signal 1 is generated at its output, which allows the transmission of the down-ratio signal from the output of the driver 18 for the output of the element 18 and 14

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signal 1, which translates the flashing glow of the 8 position indicator into even. This indicates that the actuator is completely open and is in the second horse position (static, open

If during the transfer, when the actuator is moved to the open position, a malfunction occurs (for example, jamming), then after a time determined by the response time of the delay element 10, signal 1 is generated at its output, which simultaneously through the I- element NOT 20 prohibit the transmission to the indicator 8 of the position of the signals of the generator 9 pulses and allow the transmission of high-duty signals from the output of the driver 1 pulses to it through the elements 14 and 30. As a result, the indicator 8 lights up with a blinking light, at which the duration of its luminescence is less than its off state. This indicates a faulty state of the actuator when executing the command on its transfer from the first (closed) to the second (closed) position.

If it is necessary to transfer the actuator from the second (open) to the first (closed) position, a signal 1 is applied to the control bus 1, as a result of which

Sha transmission which through the element And during the element 3 memory is formed

30 is blocked by the signal O coming from the output of the element NAND 22.

If the actuator has started to execute the command sent via bus 2 of the control, then as soon as the contact of the actuator’s closed position sensor opens, information O is turned on the information bus 16, the memory element 3 will retain its state, time delay element 31 will return to its original state the state, the 7 position indicator is turned off, and the 8 position indicator will flash with a flashing light. This means that the executive mechanism has moved away from its first end position and is in a dynamic mode of movement from the first end position to the second. As soon as the actuator reaches its second end position, the closing contact of the sensor will close on the data bus 17 as well.

signal 1, which translates the flashing of the 8 position indicator into even. This indicates that the actuator is completely open and in the second end position (static, open)

If during a shift, when the actuator is moved to the open position, a malfunction occurs (for example, jamming), then after a time determined by the response time of the delay element 10, a signal 1 is generated at its output, which simultaneously through the element IS-20 will prohibit the transmission to the indicator 8 of the position of the generator 9 signals of pulses and allow the transmission of the high-duty cycle signals from the output of the imaging unit 18 pulses through the elements 14 and 30 to it. As a result of this, the indicator 8 lights up with a blinking light, in which the duration of its luminescence is less than its off state. This indicates a faulty state of the actuator when the command to transfer it from the first (closed) to the second (open) position is executed.

If it is necessary to transfer the actuator from the second (open) to the first (closed) position, a signal 1 is applied to the control bus 1, resulting in the output of memory element 3

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signal 1, which is fed to the inputs of the elements And 13, 24 and 27 and the elements AND NOT 19 and 21, preparing them to work. In addition, this signal, through elements AND 14 and OR 32, actuates delay elements 10 and 31, as well as resolves through element 11 and element OR 33 the passage of the signal from the pulse generator 9 to the indicator 7 of the first final position, which starts to blink. with light. At the same time, from output 5 of control, signal 1 is fed to the actuator drive. This state corresponds to the steady glow of the 8 position indicator and the flashing glow of the 7 position indicator.

If, when a command is sent over bus 1 5, it is not executed for some reason, i.e. the actuator does not start its movement and the signal on the information width

if 17 does not remain equal to 1, then after a time equal to the response time of delay element 31, at the inputs of AND-HES 21 and 22 and AND-27 and 28 elements, signal 1 turns on, and through HAND 21 will prevent the signal from flowing luminescence through element I 26 to the 8 position indicator and signal of the generator 9 pulses through element I 11 to the indicator 7 position. At the same time, the same signal through the element 27 allows the position of the signals of a small duty cycle from the output of the driver 18 to the indicator 8. Thus, as a result of the operation of the delay element 31, the position indicator 8 begins to blink.

light, at which the duration of its glow exceeds the quenched state. This indicates that there was a failure in the control circuit when giving the command to transfer the actuator from the second (open) to the first (closed) position.

The display of this information on the position indicator 8 is saved even when, after a time determined by the response time of the delay element 10, a signal 1 is generated at its output, which permits the transmission of the output ratio of the pulse former 18 to the output of the element AND 13. the further transmission of which through the element AND 29 is blocked by the signal O, coming from the output of the element IS-NOT 21.

If, however, the actuator has started to execute the command given on bus 1 of the control, then as soon as the contact of the open position sensor. opens, on information bus 17, signal 1 is replaced by signal O, memory element 4 is retained, position indicator 8 is turned off, and position indicator 7 is blinking. This means that the actuator has moved away from its second end (open) position and is in a dynamic mode of movement from the second end position to the first. As soon as the actuator reaches its first end (closed) position, the closing contact of the sensor will close and on the data bus 16 a signal will go

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1, which translates the flashing LED of the 7 position to an even one. This indicates that the actuator is completely closed and is in the first final-, ((static, closed) position.

If during a transposition time when the actuator is moved to the closed position, a malfunction occurs (for example, jamming), then after a time determined by the response time of the delay element 10, a signal 1 is generated at its output, which simultaneously through the IS-19 element will prohibit the transmission to the indicator 7 of the position of the signals of the generator 9 pulses and allow the transmission to it through the elements And 13 and 29 of the signals of the increased duty cycle from the output of the driver 18 pulses. As a result, the indicator 7 of the position of the light a flashing light, in which the duration of its luminescence is less than the off state. This indicates a faulty state of the actuator when executing a command for its transfer from the second (open) to the first (closed) position.

Claims (2)

1. A device for signaling and controlling a two-position actuator comprising a first control bus, which is connected to the first input of the first memory element, the output of which is the first output of the control device and connected to the first inputs of the first and second elements And the first input of the first element OR, the output of which through the first delay element connects to the second input of the second element AND and to the first input of the third element AND, the second control bus, which is connected to the first input of the second memory element, the output of which is the second control output of the device and connected to the second input of the first OR element, to the second input of the third AND element, and to the first input of the fourth AND element, the output of which is connected to the first input of the second SHS element, the output of which is connected to the first indicator; in addition, the position of the pulse generator whose output is connected to the second 0 the input of the fourth element AND to the second input of the first element AND, the output of which is connected to the first input of the third element OR, the output of which is connected to the second position indicator, the first information bus, which is connected to the second input of the first memory element, the second information bus that is connected to the second input of the second memory element, characterized in that, in order to increase the information content and expand the field of application of the device due to the possibility of using it for mechanisms with different speeds m, the fourth element OR, the second delay element, the fifth, the sixth, the seventh, the eighth, the ninth, the tenth, the eleventh, and the twelfth elements AND, the four AND elements and the pulse shaper, the first information bus connected to the first input of the fifth element AND, to the first input of the sixth element AND, the output of which is connected to the first input of the fourth element OR, the output of which through the second delay element is connected to the first inputs of the first and second elements NAND and to the first inputs of the seventh and the eighth elements And, exits to The second information bus is connected to the first input of the ninth AND element and to the first input of the tenth AND element whose output is connected to the second input of the fourth OR element. The code of the first memory element is connected to to the second input of the tenth element I, to the first input of the third element NAND, to the second input the seventh element AND, and to the second input of the first element NAND, the output of which is connected to the third input of the first g 0 five 0 five 0 five element AND, with the first input of the eleventh element AND, and with the second input of the ninth element AND, whose output is connected to the third input of the second OR element, the input of the second memory element is connected to the second input of the sixth AND element, with the second input of the eighth element And with the second input of the second element AND-NOT, the code of which is connected to the third input of the fourth element And, to the first input of the twelfth element Nick the second input of the fifth element And, the input of which is connected to the third input of the third el OR, the input of the first delay element is connected to the second inputs of the third and fourth elements AND-NOT, the outputs of which are connected to the fourth inputs of the first and fourth elements OR, respectively, the output of the pulse generator is connected to the input of the pulse former, the first output of which is connected to the third inputs of the second and The third elements And, the outputs of which are connected to the second inputs of the eleventh and twelfth elements, respectively, the outputs of which are connected to the fourth inputs of the third and second, respectively About the elements OR, the second output of the pulse generator is connected to the third inputs of the seventh and eighth elements I. 2. The device of claim 1, wherein the pulse driver is made of a trigger, an AND element and an OR element, the trigger input is an input of the driver, and connected to the first inputs of the AND element and the OR element, the outputs of which are the first and second outputs of the driver, respectively, the trigger output is connected to the second inputs of the AND element and the OR element. and" Lj t J7U43 / and / U at 79 J eleven at 33 g J L one / ) ( / eight I (9 L. 27 34 22 ( 12 26 lllp , n / 18 J5 with CfJuf.Z