SU1341667A2 - Device for signalling condition of actuating mechanism - Google Patents

Abstract

The invention relates to a technique for automating technological processes and is intended to display information on mnemonic diagrams about final and intermediate static positions, movement, and also about a malfunction in the event of its occurrence during the movement of porno-regulating and similar actuators. having control bodies of their final states is an improvement of the device according to the author, s, No. 1283826. The purpose of the invention is to expand the field of application of the device by providing and the possibilities of its application for signaling the state of the actuators, regardless of whether they are equipped with restrictive power means or not. The purpose of the invention is achieved in that a device comprising six OR elements, three position indicators, two position sensors, Open, Close, Stop and two data buses, five AND elements, a pulse generator, a frequency divider, two inverters and two triggers, an inverter, two memory nodes of the direction of movement of the MI preceding its stop, a node controlling the time of the movement of the IM and six elements AND, the information from the end position sensors changes the state of the elements and nodes of the device and are displayed on position indicators by a combination of indicator states that glow continuously and with different blink pulse frequencies. The health of the MI is controlled by their response time, and the time of its operation is monitored by the MI movement time control unit, which allows the use of a device with MI that does not have restrictive power tools that form the MI malfunction signal, 1 s, n, f-ly, 3 Il. (L with 4 35 P5 N)

Description

The invention relates to the automation of technological processes, pre is intended to display information on mnemonic diagrams about the final and intermediate static positions, movement, as well as about the malfunctioning state in case of its occurrence during the movement of the locking and regulating mechanisms and the like. control of their end states, can be used in local and centralized control and monitoring systems in the gas, chemical, energy and other industries In those cases when there is not a quantitative enough for signaling the position, but only an inadvertently qualitative characteristic of the state, performed on mimic diagrams with simple lighting means, this is an improvement of the device according to auth. No. 1283826.

The purpose of the invention is to expand the field of application of the device by allowing it to be used for signaling the state of actuators, regardless of whether they are provided with restrictive force or

Figure 1 shows the functional scheme of the device; Fig. 2 is a functional diagram of the motion time control unit; Fig. 3 is a functional diagram of the memory node.

The device contains the first 1 and second 2 elements OR, the first .3 and second 4 position indicators, the sensor 5 of the first position, for example, Closed, the element SH-NOT 6, the third element OR 7, the sensor 8 of the second end position, for example Open, the fourth 9, the fifth 10 and sixth 11 elements of the FIR, 111 signals 12 Open, the first 13 and second 14 triggers, the signal bus 15 Stop, the first 16, the second 17 and the third 18 elements And, the pulse generator 19, the third position indicator 20, the signal bus 21 Close the first 22 and second 23 information buses, the first 24 and second 25 inverters, the pair bd 26 and fifth AND gates 27, frequency divider 28, third inverter 29, a first node 30 of memory (node memory the direction of movement ispolniS

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tel, preceding it to stop, for example, when it is moving in the direction of decreasing its flow area), the second memory node 31 (memory node of the actuator’s direction of movement, preceding; stopping it, for example, the mechanism 10 nizma in the direction of increasing its flow area), the node 32 controls the time of movement (movement of the actuator) ,, sixth 33, seventh 34, eighth 35, ninth 36,

15 tenth 37 and eleventh 38 elements I.

The frequency divider 28 generates at its output pulses of a reduced frequency and an increased duty cycle,

20 provide a flashing of the position indicators with a flashing light, at which the duration of the steady glow of the indicator is three times less than its suppressed state. The upper and second nodes 50 and 31 are designed to memorize the direction of movement of the actuator prior to stopping it. The left memory node 30 forms a single logical signal at its output in the event that when the actuator moves in the direction of decreasing its flow area (a bus is sent on bus 21, the manda Close and therefore the first

trigger 13 is in the forward state) a stop command is sent to the bus 15, i.e. the second trigger 14 is transmitted from the forward to the inverse

40 condition.

The second memory node 31 generates a single logical signal at its output when, when the actuator is moved to an increase in its cross section (bus 12, the Open command is received and therefore the first trigger 13 is in inverted state) bus 15 command is given

50 Stop, i.e. the second trigger 14 is transferred from the forward to the inverse state.

The node 32 controls the time of movement of the actuator (fig.Z)

The CS is a time node and contains a four-bit reversible binary counter 39, switches 48-63, combined into four identical groups 40-43, and

31

Also elements 44-47, the inputs of which are connected by using switches 48-63 to the direct or inverse outputs of each of the bits of counter 39. / Four groups of 40-43 switches provide setting of the time code for each of the calculated time needed to control the duration of movement actuator: time, which exceeds a predetermined value when the actuator moves (from the first end position to the second, from the closed position to the open one); time exceeding a predetermined amount when the actuator moves from the second end position to the first (from the open position to the closed position); a time exceeding a predetermined amount when the actuator is reversed in an intermediate static position, initially moving in the direction of increasing its flow area (from closed position to open, and then to closed); time exceeding a predetermined amount when the actuator is reversed in an intermediate static position, initially moving in the direction of decreasing its flow area (from open to closed position, and then to open position).

Each of the memory nodes 30 and 31 contains a two-input element 64 and a trigger 65 (FIG. 2).

The device works as follows.

The initial state of its elements depends on the initial position of the actuator, as well as on previously issued commands. If Open or Close commands were issued, the second trigger 14 from signal 1 direct signal is received from its direct output, and if Stop command was previously issued, then O. Element OR NONE 6 outputs signal 1 when the actuator is in an intermediate position, which corresponds to simultaneous the absence of single signals at the outputs of the sensors 5 and 8 position.

Accepted for the initial position in which the actuator is completely closed. In this case, the 5 position sensor, issuing

667 ..

1, causes a steady glow of the 3 position indicator. The other two position indicators 4 and 20 are extinguished, since the second position sensor 8 and the element OR NOT 6 cause zero signals. The zero signal of the element OR NOT 6 sets the counter 39 to the state O (FIG. 3).

The Q of the motion time control node 32, and 1-akk through the inverter 29 in the inverse state, triggers 65 of the motion direction memory nodes 30 and 31. At the same time, at the outputs of elements 34, 35, 37 and 38, a signal O is generated, which locks the elements 26 and 27 on the first inputs.

If it is necessary to change the state of the actuator, bus 12 is given an Open command, in which the first trigger 13 switches to the inverse state, and the second trigger 14 is set to the forward state. At the same time, the control circuits, which are not shown in Fig. 1, are instructed to open the actuator.

If the actuator starts to execute this command, then as soon as the first sensor 5 positions O, the 3 position indicator goes out, and indicators 4 and 20 light up intermittently, because the potential inputs of the second element 17 come to the inputs of the inverter 25 , triggers 13 and 14., the element OR-NOT 6, as well as an intermittent single signal from the generator 19 pulses. At the same time, the zero logic signal, previously formed at the output of the element OR NONE 6 and holding the counter 39 of the movement time control node 32 in the zero state, is removed, because the inputs of the AND 36 element also receive single logic signals from the output of the inverter 25, triggers

13 and 14, the perverted single signal from the pulse generator 19 begins to flow to the summing (+1) input of the counter 39.

The intermittent lighting of the position indicators 4 and 20 and the operation of the counter 39 in the summation mode indicate a transition process (movement) of the actuator towards its opening. Once

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the actuator is fully open, the second sensor 8. The position gives out a single logical signal and a glowing indicator, - the ditch 4 and 20 of the position goes to smooth, which indicates the full opening of the actuator. At the same time, at the output of the HS-NE 6 element, the original I changes to O and the counter 39 is set to the zero position,

If during the time determined by the recalculation factor of the counter 39, the preceding time of the transition state of the actuator, a single signal does not appear at the output of the second sensor 8 (the actuator is defective), then the forward outputs of the counter 39 establish a code that corresponds to this time, for example, 0111. Using switches 60-63 of group 43, the inputs of the AND 47 element are connected to the direct and inverse outputs of each of the bits of the counter 39 so that when this code is set, the And 47 element at its output form The signal 1, which is fed to the input of the element 38, was detected. Since, when the Open command opens on the bus 12, the first trigger 13 is set in the inverse state, the fault signal as a single logical signal from the output of the cell 38 goes through the information bus 23 to the input the inverter 25 and the first input of the element 27; In this case, the transmission through the element 36 of the signal from the generator 19 of the pulses to the north-ground input of the counter 39 and the position indicators 4 and 20, which go out, is prohibited. Simultaneously, from the output of the frequency divider 28 through the fifth element AND 27 to the second element OR 2, the second 4-position indicator starts to receive impulses of a reduced frequency and an increased duty cycle, flashing it with a flashing alarm light, which indicates a malfunction of the actuator when executing the Open command . If, before the completion of the full opening of the actuator, the Stop command is given via bus 15, the executive mechanism stops and the second trigger 14 switches to the inverse state, issuing a single 10

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The logical signal through the element C 18 to the input of the second element OR 2. In this case, the illumination of the third position indicator 20 stops, and the second position indicator 4 is illuminated with a steady light. A half-mnemonic sign indicates an intermediate half-open state of a healthy version. body mechanism. Simultaneously with the half-emitting of the mnemonic, the signal O from the direct output of the second trigger 14 prohibits the transmission of 15 pulses through the AND signal element 38 of the pulse generator 19 to the summing input of the counter 39, which stops and maintains its state. A single logical signal from the inverse output of the trigger 14, besides the AND-IB element, also goes to the first (A) inputs of the movement direction memory 30 and 31 preceding the stop. At the same time, the first directional memory element 30 does not change its output signal, and a signal 1 appears at the output of the second memory element 31, since the first trigger 13 is in the inverse state, thereby memorizing the Open command on bus 12, and the output signal of the inverter 29 is O. Thus, the second memory element 31 is prepared for operation of the device under the condition of reversing the actuator from a half-open state to the closed side. Further operation of the device circuit depends on the direction in which the actuator will move.

If from a half-open static position is reversed

actuator, i.e. by f ...,. „

20

25

thirty

35

40

50

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the bus 21 receives the Close command, the first and second triggers 13 and 14 are switched to the forward state, at which the signal transmission of the generator 19 is allowed at the output of the element 16 and the subtracting (-1) input of the counter 39, the second indicator 4 of the position goes out, the first 3 position indicator starts flashing with intermittent light, evidence of the movement of the actuator towards the closing side, and the counter 39 resumes its work, but already in the subtraction mode. As an executive mechanism, i.e. by f ...,. „

50

55

the bus 21 receives the Close command, the first and second triggers 13 and 14 are switched to the forward state, at which the signal transmission of the generator 19 is allowed at the output of the element 16 and the subtracting (-1) input of the counter 39, the second indicator 4 of the position goes out, the first 3 position indicator starts flashing with intermittent light, evidence of the movement of the actuator towards the closing side, and the counter 39 resumes its work, but already in the subtraction mode. As soon as the actuator is completely closed, the first position sensor 5 causes the signal 1, the intermittent light of the position indicator 3 to become even, the counter 39 is set to the zero state. If during the time that is established and stored in the counter 39 when the actuator moves towards the open, the position sensor 5 does not produce a single log-ir signal, which indicates a malfunction of the actuator that occurred when it was closed from the intermediate static position, after a certain time corresponding to a given code, for example 1100, at the second () output of node 32 a single logic signal appears, which through element 34 (at the first and second inputs of this element) single signals from the output of the second memory element 31 of the direction of movement and the direct output of the flip-flop 13) are lost to the inputs of the inverter 24 and the And 26 element. At the same time, the transmission of the signal from the pulse generator 19 to the subtractive stroke of the counter 39 and the 3 position indicator is prohibited that goes out. Simultaneously, the output of the frequency divider 28 through the fourth element AND 26 and the fifth element OR 10 to the third position indicator 20 begin to receive impulses of a reduced frequency and an increased duty cycle, flashing it with a flashing revolution light, indicating a faulty state of the actuator executing the Close command , carried out from the intermediate static bed, which was preceded by the movement to open. If from the intermediate static position the movement of the actuator continues in the direction of opening, i.e. An open command is sent to bus 12, the second trigger 14 switches to the forward state, in which the signals of the pulse generator 19 are transmitted through an AND 36 element to the summing input of the counter 39 and an OR 17 element to the 4th and 20th position indicators. In doing so, the counter 39 continues counting in the summation mode, and the indicators 4 and 20 are illuminated with intermittent light.

0

five

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evidence that the actuator is moving in the open direction. As soon as the actuator is fully open, the position sensor 8 causes a single logic signal and the intermittent illumination of the indicators 4 and 20 becomes even. If during a time exceeding the transition time of the actuator, on the sensor 8 of the sensor 8, a single signal does not appear (in the event of an actuator failure), the third position indicator 20 goes out and the second indicator 4 lights up with a blinking light of a reduced frequency and an increased duty cycle

To transfer the actuator from a fully open to a closed state, a Close command is sent to the bus 21, which triggers 13 and 14 to the forward state. The indicators 5 and 4 and 20 are switched off and the indicator 3 is illuminated with a bright light, indicating that the actuator has moved. Khanizma toward close. When the actuator reaches the final closed position, the intermittent luminescence of the position indicator 3 changes to an even one, signaling the final closed position and the actuator. At the same time, at the output of the element OR-NOT 6, the signal 1 is changed to O and the counter 39 is set to the zero state. If during the time determined by the recalculation coefficient of the counter 39, which is longer than the transition time of the actuator, a single signal does not appear at the output of the first sensor 5 (the actuator is faulty), a code corresponding to this time is set at the direct outputs of the counter 39 for example tOOO. As a result, from the third (b) output of the movement time control node 32, a single logical signal arrives at the input of the And 35 element, which, since there is also a single logical signal from the direct output of the flip-flop 13 at the other input of the 35 And element, passes through the information bus 22 to the inputs of the first inverter 24 and element AND 26. The first 3 position indicator goes out, and

0

five

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five

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five

ten

20

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The third position indicator 20 is flashing with a blinking light, at which the duration of its even luminescence is three times less than the suppressed state. This indicates a malfunction of the actuator when executing the Close command,

If during the movement of the actuator in the direction of closing, the Stop command is given on the bus 15, the latter stops, the intermittent lighting of the position indicator 3 stops, and the second indicator 4 lights up evenly, which indicates that the actuator is in an intermediate position. Simultaneously from the direct output of the second trigger 14, the signal O prohibits the transmission through the element 33 of the generator signals 19 pulses to the subtractive input of the counter 39, and a single logical signal from the inverse output of the trigger 14 goes to the first (A) inputs of the movement direction memory 30 and 31 . In this case, the first node 30 changes its output signal to unity, since the trigger 13 is in the forward state, thereby memorizing the flow, on the bus 21 of the Close command. The second node 31 of the memory of the direction of movement of its signal does not change at the output, since a zero signal from the inverse output of the flip-flop 13 is applied to one of its inputs.

Thus, the first memory node 30 is prepared for operation of the device in case of reversal of the actuator from the intermediate state to the open side.

ten

As soon as the actuator is fully opened, by a single signal from the sensor 8, the position indicators 4 and 20 are switched to an even glow, and the counter 39 by the zero signal of the element OR NOT 6 is set to the zero state.

If during the time that is established and stored in the counter 39 when the actuator moves in the direction of closing, the position sensor 8 does not output 1, after a certain time corresponding to a given code, for example 0011, at the first output of the node 32 A single signal is transmitted through the element 37 and to the inputs of the inverter 25 and element 27. At the same time, the transmission of the signal from the pulse generator 19 to the summing input of the counter 39 and position indicators 4 and 20, which go out, is prohibited. Simultaneously with the release of the divider

25 28 frequencies to the second position indicator 4, through the fifth element AND 27 and the second element OR-2, pulses of a lower frequency and increased duty cycle begin to arrive, highlighting

30 with its flashing light, at which the duration of the glow is three times less than the quenched state. This indicates a malfunction of the actuator when performing

Those Open commands are carried out from an intermediate static position preceded by the execution of the Close command.

Claims (2)

1. A device for signaling the state of the actuator according to author. No. 1283826, tl and h a- If the bus 12 receives the same so that, in order to open the racommand, then the first trigger 13 switches to the inverse state, and the second trigger 14 goes to the forward one, where the signal transmission of the pulse generator 19 is permitted at the output of the element 17 and the summing input of the counter 39, the second 4 and the third 20 position indicators begin to flash intermittently, indicating that the actuator moves in the direction open, and the counter 39 resumes its work, but already in the mode of summation. 50 widening the field of application of the device by allowing it to be used to signal the state of the actuators, regardless of whether they are provided with restrictive means or not, two memory nodes, a motion time control node, six AND elements and a third gg inverter, input which is connected to the output of the first element OR NOT and to the installation input of the node controlling the time of movement, and the output to the first inputs of the first and second nodes 7 ten As soon as the actuator is fully opened, by a single signal from the sensor 8, the position indicators 4 and 20 are switched to an even glow, and the counter 39 by the zero signal of the element OR NOT 6 is set to the zero state. If during the time that is set and stored in the counter 39 when the actuator moves in the direction of closure, the position sensor 8 does not output 1, after a certain time corresponding to a given code, for example 0011, at the first output of the node 32 appears a single signal which, through the element 37, goes to the inputs of the inverter 25 and element 27. At the same time, the transmission of the signal from the pulse generator 19 to the summing input of the counter 39 and the position indicators 4 and 20, which go out, is prohibited. Simultaneously with the release of the divider 28 frequencies to the second position indicator 4, through the fifth element AND 27 and the second element OR-2, pulses of a lower frequency and an increased duty cycle begin to arrive, highlighting its flashing light, at which the duration of the glow is three times less than the quenched state. This indicates a malfunction of the actuator when performing Open commands, performed from an intermediate static position preceded by the execution of the Close command. Invention Formula widening the field of application of the device by allowing it to be used to signal the state of the actuators, regardless of whether they are provided with restrictive SRS means or not, two memory nodes, a motion time control node, six AND elements and a third inverter, whose input connected to the output of the first element OR NOT and to the installation input of the node controlling the time of movement, and the output to the first inputs of the first and second nodes memory, the second inputs of which are connected to the inverse output of the second trigger, the third input of the first memory node is connected to the forward output of the first trigger and the first inputs of the sixth, seventh and eighth And elements, the third input of the second memory node is connected to the inverse output the first trigger and with the first inputs is an alternate reversible counter with direct The ninth, tenth and eleventh And elements, the second inputs of the Sixth and Ninth elements And are connected to the outputs of the first and second inverters, respectively, the third with the direct output of the second trigger, the fourth with the output of the pulse generator, and their outputs with the input subtracting and the summing input of the time control node, the first, second, third and fourth outputs of which are connected to the second inputs of the tenth, seventh, eighth and eleventh elements, respectively, of the outputs of the first and second memory nodes are connected to t The other inputs of the tenth and seventh elements, respectively, And, the outputs of the seventh5 and the inverse outputs, the element's chip, the switches combined in the group's group, the number of switches in each group corresponds to the number of counter bits, the inputs of the read, the sum, and the installation in the counter, O are the inputs of the subtraction, the sum, and the control node 2Q of motion time, the counter outputs are connected to the switch inputs of all groups, the switch outputs of each group are connected to the inputs of the corresponding; its element AND, the outputs 25 of which are, respectively, the first, second, third and fourth outputs of the time control unit, or no. The first and the eighth And elements are connected to the first information bus, and the outputs of the tenth and eleventh And elements - to the second information bus. 2. The device according to claim 1, characterized in that the movement time control node contains two inverse outputs, an AND cell, switches, integrated in four groups, the number of switches in each group corresponds to the number of counter bits, subtracting, summing and setting inputs The counters are respectively the inputs of the subtraction, the summation, and the installation control node. motion time, the counter outputs are connected to the switch inputs of all groups, the switch outputs of each group are connected to the inputs of the corresponding; its element AND, the outputs which are, respectively, the first, second, third and fourth outputs of the time control unit moving, or. Editor M.Dshyn Compiled by E. Budarina Tehred Kravchuk AO Corrector M.Sharoshi Order 4439/54 Circulation 543 Subscription VNIIPI USSR State Committee for inventions and discoveries 113035, Moscow, Zh-35, Raushsk nab ,, d.4 / 5 Production and printing company, Uzhgorod, Projecto st., 4