CN2222372Y

CN2222372Y - Universal operation controller

Info

Publication number: CN2222372Y
Application number: CN 93246169
Authority: CN
Inventors: 李晓宁; 刘连仲
Original assignee: Individual
Current assignee: Individual
Priority date: 1993-12-16
Filing date: 1993-12-16
Publication date: 1996-03-13
Anticipated expiration: 2003-12-16

Abstract

The utility model relates to an integrative universal operating controller, which belongs to a multifunctional universal operating control instrument carrying out operating control to electric actuators in instruments and meters. The utility model is composed of two optoelectronic isolators QS1. QS2 controlling a bidirectional thyristor, a manual operating device, an automatic tracking control circuit, etc., and realizes the control of a TTL and an analog modes of a computer by a two-way comparison circuit, a forward path, etc. The operation and the control action of two blocks of instruments of a manual operator and a servo amplifier to the electric actuator in the original DDZ-II and III type combining instruments can be replaced, and simultaneously, 50% of external connecting wires of the original combining meters can be reduced. The utility model has the advantages of small volume, convenient operation, convenient maintenance, etc.

Description

The general operation controller

The utility model relates to a kind of integrated general operation controller, belongs to the multifunctional universal operation control instrument of in the instrument and meter electric actuator being operated control.

In automation process control,, adopt the combination of manual operator and servoamplifier to realize usually at present to the operation and the control of DDZ-II, III type combination instrument electric actuator.Its manual operation and manual switching adopt the forceful electric power device that forceful electric power is directly controlled, and servo amplifier section adopts inductive element and discrete component.So its build heaviness, poor reliability, the wiring complexity, II, III type instrument can not be general, and the Presentation Function of operation conditions is few, and intuitive is poor.If be applied in the computer system, this instrument can not provide computing machine required manual signal.Transistor-Transistor Logic level control mode and two switching device shifters that above control system is controlled an actuator.

The purpose of this utility model just provide a kind of be applicable to simultaneously instrument and computer control system integrated, multi-functional, be light reliable again universal operation control instrument.

The utility model is realized as follows:

It is that photoelectric isolating circuit is isolated forceful electric power and light current fully by two groups of bidirectional triode thyristor driving circuits, makes it reach the purpose that drives forceful electric power by light current.Strengthen safe reliability simultaneously, simplify primary circuit.Hand-operating device, automatic tracking control circuit, limit circuit, multi-functional change-over switch, integrated circuit and light current miniature device are adopted in LET state demonstrations etc.Formed the general operation controller of hand behaviour thus with servo amplification two parts function integration.And by change-over switch, through path and automatic tracking control circuit make it to be applicable to instrument and computing machine simultaneously, and then are applicable to computing machine TTL and the control of simulation dual mode.

Below in conjunction with accompanying drawing the utility model is done specific descriptions:

Accompanying drawing is the utility model principle key diagram.

1. by two groups of bidirectional triode thyristor driving circuits, the linear photoconductor buffer circuit, automatic tracking circuit, hand-operating device, limit circuit and multifunctional small-size change-over switch, multi-functional LET shows that the integrated general operation controller of being formed is characterized in that: driving circuit is by photoisolator QS1 and QS2 and bidirectional triode thyristor Q1, the Q2 control end links, and the simulation automatic tracking control circuit is by two-way comparator circuit U3, and U4 is by adjustable resistance WR3 * 2 and linear photoconductor buffer circuit QS3, QS4 links, input end of analog signal J14, J15, J16, J17 joins through change-over switch S5 and QS3, the position feed back signal input end is by J3, and J14 is through outside serial connection delivery outlet J1, and J2 and QS4 link, U3, the output terminal of U4 is through change-over switch S4, S1 and through path A1, A2, A3, link, TTL input end J12, J13 is through S4, S1 switches the direct and through path A1 in back, A2, A3 joins, limit circuit is U1, U2 after the adjustment of WR2 bound, imports termination QS4 output terminal through potentiometer WR1, output termination through path A1, A2, A3, manually, the switchette S1 that automaticallyes switch and the manual operation micro press-key S2 of rotating, S3 links, the state level signal of S1 is through current-limiting resistance R3, and R4 is by J8, and J9 exports, required for computing machine from motion tracking, through path A1, A2, A3 with information processing after with driving circuit in photoisolator QS1, QS2 links, to realize the reliable control to electric actuator.

2. bidirectional triode thyristor Q1 in the drawings, the T2 end of Q2 adds photoisolator QS1 respectively with control end G, QS2, and pull-up resistor R1, R2.Work as QS1, when QS2 diode end was driven, bidirectional triode thyristor was switched on, and to drive the actuator D of TB4 or TB5 end, made its forward or reverse action, and TB3 is the forceful electric power common port.TB1, TB2 are the 220V ac power supply terminal.Because photoisolator QS1, the isolation voltage of QS2 is greater than 3000V, so forceful electric power and light current are isolated fully.

3. A1 among the figure, A2, A3 are the assembling devices of function through path.A1 is two triple gates and the analog switching circuit that threshold level control is arranged; A2 is logic control and LET LED driving circuit; A3 is a level shifting circuit.

4. S1 is manual operation and the small-sized change-over switch of controlling automatically among the figure, and when manual, operation S2 or S3 fine motion button with the level signal of corresponding forward and backward, drive QS1 or QS2 by triple gate A1, make its manual state of DS5 diode displaying simultaneously.

5.S1 the state level signal, by R3, output to J8 after the R4 current limliting, J9, for computer control system required from motion tracking, J10 is for holding altogether.No matter S1 is in manually or auto state, shows the operating state of its forward and backward by DS3 or DS4.When the maloperation that forward and backward acts on simultaneously occurring, the logic control circuit of A2 makes the control gate sealing of A1.

6.S4 be the small-sized change-over switch of TTL control mode and analog control mode.This dual mode all uses under the S1 automatic control state, by the DS6 diode displaying.When computing machine adopted the TTL mode, TTL high level useful signal by J12 or the input of J13 end, drove corresponding QS1 or QS2 through A1.J11 is for holding altogether among the figure.When instrument or computing machine employing analog control mode, the actuator position feedback signal inserts J3 among the figure, J14, and analog control signal inserts J14 among the figure, J15 or J16, J17.J1, J2 are position feed back signal serial connection outlet terminal.Two signals are by linear photoconductor isolator QS3, QS4 and two-way comparer U3, U4 compares judgement, so that the useful signal of forward or reverse to be provided, drive QS1 or QS2 through A1, but when two signals near the time, analog switch automatically shuts down its path among the A1, in order to a dead band less than 200mv to be provided, make system relatively stable, form automatic tracking control circuit thus.

7. S5 is a change-over switch between the multi-channel analog control system among the figure, if the instrument regulator meets J14, and J15, computing machine J16, J17 when a certain operational system goes wrong, switches to another system, and actuator is moved continuously, to guarantee safety in production.By the combination of S4 and S5, applicable to the Redundant Control of two analog control systems of computing machine and a TTL control system.

8. under automatic control state, position feed back signal exceeds when spacing, and the significant level that comparer U1 or U2 provide seals its path by the control gate of A1.WR1, WR2 are used for regulating the size of the spacing value of upper and lower limit.DS1 or DS2 show its spacing state simultaneously.Mechanical position limitation is that level signal is held through J7, and is spacing to reach by the control gate of J5 or J6 end sealing A1, simultaneously DS7 or its upper limit of DS8 diode displaying or lower limit state.

9. figure neutral line photoisolator QS3, QS4 not only isolates the external analog current signal, improve its antijamming capability, and adapt to outside collector electric current input mode or to the vagabond current input mode etc., for outside input circuit provides a general-purpose interface, make its control system that is applicable to DDZ-II type or III type and computer control system correspondingly.

10.CR4 CR7 is the qualification diode to input direction, protecting linear photoisolator QS3, and QS4, and install and do not note directivity in order to solve in the past instrument, and cause bring in the computer control system debugging numb numerous.

11.T C1, PS are the 5V DC-stabilized circuit of using for inner.MA1, mA2 are position feedback and analog control signal current values indicator gauge.

In sum, the utility model has not only overcome the problem that former instrument exists, and has comprehensively realized Its various functions have also adapted to the needs of instrument and computer control system, for the modern times are controlled automatically An effective interface is provided between system and the YE. Have that build is light, cost is low, Multi-functional, the advantages such as reliability is high, highly versatile, installation, convenient operating maintenance can reduce again The external cabling of former combination instrument 50%. Apply this utility model and substitute former DDZ-II type or III Manual operator and servo amplifier in the combination instrument can be the popularization of further raising automatic control system Play a positive role with application level.

Claims

A kind of by two groups of bidirectional triode thyristor driving circuits, the linear photoconductor buffer circuit, automatic tracking control circuit, hand-operating device, limit circuit and multifunctional small-size change-over switch, multi-functional LET shows the integrated general operation controller of being formed, it is characterized in that: driving circuit is by photoisolator QS1, QS2 and bidirectional triode thyristor Q1, the Q2 control end links, the simulation automatic tracking control circuit is by two-way comparator circuit U3, U4 is by adjustable resistance WR3 * 2 and linear photoconductor buffer circuit QS3, QS4 is connected, input end of analog signal J14, J15, J16, J17 joins through change-over switch S5 and QS3, and the position feed back signal input end is by J3, and J4 is through outside serial connection delivery outlet J1, J2 and QS4 link, U3, the output terminal of U4 be through change-over switch S4, S1 and through path A1, A2, A3 links, TTL input end J12, and J13 is through S4, S1 switches the direct and through path A1 in back, A2, the A3 limit circuit that joins is by U1, and U2 is through potentiometer WR1, after the WR2 bound is adjusted, input end wiring photoisolator QS4 output terminal, output termination through path A1, A2, A3, manually, the switchette S1 that automaticallyes switch and the manual operation micro press-key S2 of rotating, S3 links, and the state level signal of S1 is through current-limiting resistance R3, R4 is by J8, J9 output, through path A1, A2, A3 with information processing after with driving circuit in photoisolator QS1, QS2 links.