CN201583842U - Electric actuating mechanism with various control modes for valve - Google Patents

Electric actuating mechanism with various control modes for valve Download PDF

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Publication number
CN201583842U
CN201583842U CN2010201229301U CN201020122930U CN201583842U CN 201583842 U CN201583842 U CN 201583842U CN 2010201229301 U CN2010201229301 U CN 2010201229301U CN 201020122930 U CN201020122930 U CN 201020122930U CN 201583842 U CN201583842 U CN 201583842U
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control
radio
control section
motor
frequency
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张永亮
李岩
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    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P90/00—Enabling technologies with a potential contribution to greenhouse gas [GHG] emissions mitigation
    • Y02P90/02—Total factory control, e.g. smart factories, flexible manufacturing systems [FMS] or integrated manufacturing systems [IMS]

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Abstract

An electric actuating mechanism with various control modes for a valve comprises a microcontroller, an electric actuating part connected with a microcontroller output interface, a control part connected with the microcontroller control interfaces and the like. The microcontroller is provided with a plurality of control interfaces, and the control interfaces are connected with a switching value control part, an analogue value control part, a wired network control part and a newly-added two-way wireless radio-frequency control part of the control part respectively. The two-way wireless radio-frequency control part is composed of a radio-frequency transceiver module, a CPU (computer processing unit), an A/D converter and the like; and the reception and transmission of the two-way wireless radio-frequency control part performs wireless radio-frequency and network control according to the convention of the communication protocol. The utility model belongs to the field of automatic control, is mainly matched with multi-position and multifunctional valves, and also can drive other electric actuating mechanisms. The electric actuating mechanism realizes various network control modes including wireless radio-frequency and network control, further meets the requirements of industrial controlled networking and informatization, increases application flexibility, enlarges application range, and improves control precision, stability and real-time performance.

Description

The valve electric operator of multiple control modes
Technical field
The utility model belongs to technical field of automatic control, and is particularly a kind of main with the multidigit multifunction valve is supporting, also can drive the valve electric operator that the multiple control modes of usefulness is located by other angular displacement mechanisms.
Background technology
The relevant patent with the network control electric operator that the Chinese patent communique is announced is exemplified below: 1. " can realize ethernet communication ... electric operator " (the patent No.: 02110525.1): control with MCU and ethernet communication.2. " fieldbus valve positioner " (patent No.: 200520134573.X): with MCU and the control of 485 bus interface.3. " novel intelligent electric actuator " (patent No.: 200820300386.8): with MCU and Modbus Fieldbus Control and infra-red remote control.4. " a kind of CAN bus intelligent electric device " (patent No.: 200920129529.8): with MCU and the total line traffic control of CAN based on CAN open agreement.Though above-mentioned patent is used MCU control, also realizes certain network control, control function is few, be unrealized less radio-frequency and network control.In the place that complex environment is not easy to connect up, with the application of restriction electric operator.In the application of multidigit multi-pass ball valve, present electric operator can not meet the demands.
Summary of the invention
In order to overcome the deficiency that existing valve is few with the electric operator network control function, can not satisfy industrial control networkization and information system requirement, the utility model provides the valve electric operator of one kind of multiple control modes, realize network control with multiple mode, further satisfy industrial control networkization and informationalized demand.
The technical scheme that its technical matters that solves the utility model adopts is:
The electronic operating part that the valve of multiple control modes is connected by microcontroller, microcontroller output interface with electric operator, each control part that the microprocessor controls interface connects respectively grade and form.Each control section has: switching value control section, analog quantity control section, cable network control section, newly-increased double-direction radio radio frequency control section.Double-direction radio radio frequency control section is connected with the less radio-frequency control interface of microcontroller; This control section is made up of radio-frequency (RF) receiving and transmission module, CPU, A/D converter etc.; Radio frequency network communications protocol agreement is pressed in its reception and emission, carries out less radio-frequency and network control thereof.Electronic operating part is made up of servo amplification front end circuit, servo amplification drive part, motor, electric motor protecting part, position detecting mechanism, photoelectric isolating circuit, mechanical reduction gear train of connecting with the driven portion etc.
The technical scheme that its technical matters that solves the utility model adopts can also be:
The valve of multiple control modes adopts the multi-functional ball valve of multidigit with the driven portion of electric operator; Its double-direction radio radio frequency control section and microcontroller become one, i.e. wireless singlechip.When the valve of a plurality of multiple control modes together uses with electric operator, can arrange, form the radio frequency network control system by special communication protocol.Its electronic operating part is established the motor braking part.
The beneficial effects of the utility model are:
1. make valve realize the multiple network control mode, comprise less radio-frequency and network control, further satisfy industrial control networkization, informationalized demand with electric operator.Improve valve the electric operator application flexibility and the scope of application.
2. increase motor braking circuits and can guarantee this electric operator control accuracy, stability and real-time.
Description of drawings
Fig. 1 is the block scheme that the valve of multiple control modes is formed with electric operator.
Fig. 2 is the circuit diagram of the valve of multiple control modes with the wireless singlechip part of electric operator.
Fig. 3 is the circuit diagram of the valve of multiple control modes with electronic execution of electric operator and control section.
Among the figure: U 1A-MCU with radio transceiver function is nF CPU, JP 1All IO interface of-nFCPU, U 2-EEPROM, U 3And U 4-photoelectrical coupler is called for short optocoupler, U 5-three terminal regulator, U 6And U 7-photoelectrical coupler, U 8-electric machine controller, U 9～U 12-photoelectrical coupler, U 16-RS485 level translator, U 17-address latch, U 18-storer, U 19-LAN controller, J 1-attaching plug, S 1-AC/DC converter, S 2-DC/DC converter, RF-less radio-frequency terminals, L 1-integrated transporting discharging, L 2-integrated transporting discharging, MG 1-motor or motor, dmq-potentiometer, DB9-nine kinds of needles socket, RJ-45-crystal head, JP 2-double pin, Input-input end.Annotate: no U 13～U 15Microcontroller MCU is a single-chip microcomputer.
Embodiment
The utility model is described in further detail below in conjunction with drawings and Examples.
The valve of the utility model multiple control modes shown in Figure 1 composition of electric operator.It mainly is made up of the control section of microcontroller, electronic operating part, a plurality of different control modes.
1. microcontroller: i.e. MCU; MCU that this is routine and double-direction radio radio frequency control section become one, i.e. wireless singlechip μ F MCU.Also can adopt the form of MCU and the split of double-direction radio radio frequency control section.External control interface of MCU and output interface use light-coupled isolation, with protection MCU and raising antijamming capability.
2. control section: switching value control section, analog quantity control section, cable network control section, double-direction radio radio frequency control section are arranged; They are the corresponding connection of control interface with the corresponding input interface of MCU respectively.Except the double-direction radio radio frequency control section of μ F MCU from inside modules with the less radio-frequency control interface of MCU directly is connected, other control section all is connected with the MCU control interface by photoelectric isolating circuit.
Double-direction radio radio frequency control section is a physical piece of forming wireless network, has the transmission-receiving function of wireless signal; Form by the CPU in the wireless singlechip, radio receiving transmitting module, A/D converter etc.Radio frequency network control is by the communications protocol agreement.When a plurality of valves together use with electric operator,, form the radio frequency network control system with communication modes and control by the special communication protocol agreement.The Industrial Ethernet interface that the cable network control section comprises the industrial bus interface be made up of the RS485 interface circuit, is made up of the LAN interface circuit.The switching value control section, to the corresponding control interface of microcontroller, input switch amount control signal is by the action of switching value control electric operator through photoelectric isolating circuit.The analog quantity control section is controlled the action degree of electric operator by to the corresponding control interface input analog amount of microcontroller control signal with the analog quantity size.Various control modes can make up in many ways or use a kind of separately.
3. electronic operating part: form by servo amplification front end circuit, servo amplification drive part, motor, electric motor protecting part, motor braking part, position detecting mechanism, photoelectric isolating circuit, mechanical reduction driving mechanism of connecting with the driven portion etc.The control interface of MCU is controlled the motor of electronic operating part through photoelectric isolating circuit by servo amplification driving front end circuit, driving circuit.The protection part of motor has temperature protection and protections such as overcurrent, overvoltage.The motor braking part is used direct current generator, makes the power end short circuit of motor during braking.If the use alternating current generator is used the DC circuit of injecting direct current for the motor power end during braking.Position detecting mechanism comprises position-detection sensor spare, and the position that output reflection is carried out and the analog quantity and the switching value of duty turn back to CPU with the position signalling of topworks so that location accurately.The mechanical reduction gear train is with topworks's driving coupling of driven portion.The driven portion is the multi-functional ball valve of multidigit, or other electrically operated valve, also can be to be driven other electric operator that produces angular displacement.
The valve of the multiple control modes shown in Figure 2 CPU of electric operator and the circuit theory of bi-directional RF control section.
Module U 1ABe the MCU that has the radio-frequency receiving-transmitting function, model: nF95e; Also can select the combination of general MCU and radio receiving transmitting module for use.JP 1Be all input and output interfaces of nF95e; Port P 00～P 07(be P 0.0～P 0.7) be two-way I/O mouth, analog quantity input is AIN 0～AIN 3All the other have: reference level output terminals A REF, and serial input terminal MOSI, serial output terminal MISO, clock end SCK, sheet select control end EECSN and antennal interface ANT 1, ANT 2Antenna outward element: inductance L 1～L 3, capacitor C 3, C 4, C 12, C 13, C 15, C 16, select according to transmitting-receiving frequency.Chip U 2Be that three-way serial electricity is rewritten EEPROM, sheet choosing end CS is through JP 1The sheet of EECSN termination CPU select control end EECNS, serial output terminal SO, serial input terminal SI, clock end SCK meet serial input terminal MISO, serial output terminal MOSI, the clock end SCK of CPU respectively.Main vibration circuit is by crystal oscillator JT 2, resistance R 1, capacitor C 1, C 2Meet the XC of CPU 1, XC 2End constitutes.The impedance of radio frequency input/output terminal RF in/out is 50ohm.Resistance R 2, R 5, capacitor C 5～C 10Be module U 1APeripheral cell; Resistance R 3, R 4, capacitor C 11Be chip U 2Peripheral cell.
The circuit of Fig. 2 is mainly realized the action control of wireless network communication and electric operator, and the exchanges data of other communication modes and control.
The circuit theory of the electronic operating part of the valve usefulness electric operator of multiple control modes shown in Figure 3, cable network control section, power unit.
JP among Fig. 3 1Be the JP among Fig. 2 1Each port definition is controlled by the program of CPU, is the external connection interface from CPU.Other elements are electric machine controller U 8: LMD18200, RS485 level translator U 16: MAX485, LAN controller U 19: RTI8019AS.Photoelectrical coupler U 3, U 4, U 6, U 7, U 9～U 12Constitute each the input signal control interface of CPU and the photoelectric isolating circuit of output interface.
1. the power unit of electric operator: AC power is by attaching plug J 1Input is through AC/DC converter S 1, capacitor C 5Filtering is converted to DC+12V output, power supply machine controller U by AC 127V 8After resistance R 11, R 10Current limliting, stabilivolt D 4, D 5Voltage stabilizing, three terminal regulator U 5Voltage stabilizing, capacitor C 1, C 2Filtering, output+5V supplies with RS485 level translator U 16, LAN controller U 19, and other elements that directly do not link to each other with CPU; Again through DC/DC converter S 2: B0505, isolate back output+5V, supply with and the direct-connected circuit of CPU, again through diode D 1, D 2, D 3Step-down, stabilivolt D 6Voltage stabilizing, output+3V, i.e. power end V CCVoltage, supply with CPU.
2. electronic operating part: form by servo amplification front end circuit, servo amplification drive part, motor, motor braking part, electric motor protecting part, position detecting mechanism, photoelectric isolating circuit etc.
1. servo amplification front end circuit, servo amplification drive part: by triode Q 4, optocoupler U 3, electric machine controller U 8Deng composition.The control of motor: input and output interfaces JP 1Electric Machine Control end P 2.7The pulse of output different in width is through triode Q 4, optocoupler U 3, meet electric machine controller U 8PWM end, control motor M G 1The rotating speed of (being A), MG 1Rotating speed and P 2.7The pulse width of output is relevant.JP 1Motor steering control end P 2.6Control motor M G 1Rotation direction, P 2.6End is through triode Q 5, optocoupler U 4Meet electric machine controller U 8DIR end, motor M G during the output high level 1Just change motor counter-rotating during output low level.
2. motor braking part: this example is used direct current generator MG 1, make P during braking 2.7The pulse width of end is 0, electric machine controller U 8The pin 2 and 10 of drive end is equivalent to short circuit, motor M G 1Be in on-position.
3. electric motor protecting part: by integrated transporting discharging L 2, L 1With compositions such as CPU.Electric machine controller U 8Pin 8 are load output terminals, its potentiometric response motor M G 1Load condition, the signal of output is through integrated transporting discharging L 2Amplification, optocoupler U 4Isolation, integrated transporting discharging L 1After the amplification, through lead end AI 1, JP 1AI 1Hold, output to the AIN of CPU 1End is used for protecting motor M G 1Other holding circuit slightly.
4. position detecting mechanism: go out the potentiometer dwq of end and CPU etc. by the axle that is installed in electric operator and form.The travelling arm of potentiometer dwq rotates with output shaft, is used for detecting the rotational angle of electric operator; Meet the AI of potentiometer dwq travelling arm 0End is through JP 1AI 0The AIN of end and CPU 0End connects, the operation of electric operator of feedback and supervision valve.All the other peripheral cells of electronic operating part have: resistance R 3～R 6, R 9, R 12～R 18, capacitor C 6～C 9
3. cable network control section: comprise RS485 interface circuit (industrial bus interface), LAN interface circuit (Industrial Ethernet interface) dual serial communication interface circuit.
1. RS485 interface level translator U 16: MAX485 realizes, by JP 1Port P 2.2, P 2.3The serial communication signals of the Transistor-Transistor Logic level of output is through optocoupler U 11, U 12Be input to pin DI, the DE of MAX485 after the isolation, after the MAX485 conversion, output to 7,8 ends of nine core D type socket DB9, be connected with 485 industrial bus by A and B end.By the serial signal of 485 industrial bus input, after the MAX485 conversion, import, through optocoupler U by pin RO 10Be transported to JP after the isolation 1Port P 2.1Peripheral cell has: resistance R 21～R 31, stabilivolt D 6, D 7
2. LAN interface (lan interfaces) realizes with RTI80198AS.The P of CPU 00～P 07Meet LAN controller U 19Data terminal SD 0～SD 7Carry out exchanges data, simultaneously through address latch U 17: the 74HC573 latch address is to the address end SA of LAN controller 0～SA 4, read-write control end WD and RD, reset T0 and interrupt IN of timing 0Receive the CPU corresponding ports.LAN controller U 19Network-side RD, LD, TPIN+, TPIN-, being connected to lan network through LAN interface by quartzy joint RJ45 is on the Industrial Ethernet.Peripheral cell has: storer U18, crystal oscillator, capacitor C 10And C 11, resistance R 32
In this example, because the pinout of CPU is different under various control modes, RS485 network and lan network can not use simultaneously.The cable network control section can also adopt other serial communication wired network interface except 485 interface chips, LAN interface chip, as: CAN interface etc.
4. input end Input represents the signal input end of switching value control section or analog quantity control section, by double pin JP 2Meet optocoupler U 9Input side, optocoupler U 9The P of output termination CPU 2The P of mouth 2.0End.R 20, R 19Be input side current-limiting resistance, outgoing side pull-up resistor.Switching value control section, analog quantity control section are identical with conventional control, are omitted at this.

Claims (6)

1. the valve electric operator of one kind of multiple control modes comprises microcontroller, the electronic operating part of its output interface connection, switching value control section and analog quantity control section and the cable network control section that its control interface connects respectively; Electronic operating part comprises servo amplification front end circuit, servo amplification driving circuit, motor, electric motor protecting part, position detecting mechanism, photoelectric isolating circuit, the mechanical reduction driving mechanism that connects with the driven portion; It is characterized in that: said microcontroller, be provided with the less radio-frequency control interface, this interface is connected with double-direction radio radio frequency control section; Double-direction radio radio frequency control section comprises radio-frequency (RF) receiving and transmission module, CPU, A/D converter; The reception of double-direction radio radio frequency control section and emission have radio frequency network communications protocol agreement.
2. the valve electric operator of multiple control modes according to claim 1, it is characterized in that: said driven portion is the multi-functional ball valve of multidigit.
3. the valve electric operator of multiple control modes according to claim 1, it is levied and is: said double-direction radio radio frequency control section and microcontroller become one, and are wireless singlechip.
4. according to the valve electric operator of claim 1 or 3 described multiple control modes, it is characterized in that: the valve electric operator of a plurality of multiple control modes of together using, their less radio-frequency control section has the special communication protocol agreement, forms the radio frequency network control system with communication modes.
5. the valve electric operator of multiple control modes according to claim 1, it is characterized in that: said cable network control section comprises 485 interface circuits, LAN interface circuit.
6. the valve electric operator of multiple control modes according to claim 1, it is characterized in that: said electronic operating part is provided with the motor braking part; When motor is alternating current generator, when partly being braking, injects motor braking the DC circuit of direct current for the motor power end; When motor was direct current generator, motor braking made the circuit of motor power two terminal shortcircuits when partly being braking.
CN2010201229301U 2010-02-01 2010-02-01 Electric actuating mechanism with various control modes for valve Expired - Lifetime CN201583842U (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103729993A (en) * 2013-12-17 2014-04-16 上海孚因流体动力设备有限公司 Wi-Fi (Wireless Fidelity) automatic control system device and application thereof
CN105422950A (en) * 2015-12-29 2016-03-23 常熟市亨达电子器材厂 Mining flame-proof type electric ball valve
CN114220266A (en) * 2021-12-04 2022-03-22 海之景科技集团有限公司 Complex road blind area intelligent monitoring device

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103729993A (en) * 2013-12-17 2014-04-16 上海孚因流体动力设备有限公司 Wi-Fi (Wireless Fidelity) automatic control system device and application thereof
CN105422950A (en) * 2015-12-29 2016-03-23 常熟市亨达电子器材厂 Mining flame-proof type electric ball valve
CN114220266A (en) * 2021-12-04 2022-03-22 海之景科技集团有限公司 Complex road blind area intelligent monitoring device

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AV01 Patent right actively abandoned

Granted publication date: 20100915

Effective date of abandoning: 20130619

RGAV Abandon patent right to avoid regrant