CN105840900A - Foundation Fieldbus type controller for electric valve actuator - Google Patents
Foundation Fieldbus type controller for electric valve actuator Download PDFInfo
- Publication number
- CN105840900A CN105840900A CN201610377457.3A CN201610377457A CN105840900A CN 105840900 A CN105840900 A CN 105840900A CN 201610377457 A CN201610377457 A CN 201610377457A CN 105840900 A CN105840900 A CN 105840900A
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- Prior art keywords
- valve
- microcontroller
- foundation fieldbus
- bus
- parameter
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/02—Actuating devices; Operating means; Releasing devices electric; magnetic
- F16K31/04—Actuating devices; Operating means; Releasing devices electric; magnetic using a motor
- F16K31/046—Actuating devices; Operating means; Releasing devices electric; magnetic using a motor with electric means, e.g. electric switches, to control the motor or to control a clutch between the valve and the motor
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K37/00—Special means in or on valves or other cut-off apparatus for indicating or recording operation thereof, or for enabling an alarm to be given
- F16K37/0075—For recording or indicating the functioning of a valve in combination with test equipment
- F16K37/0083—For recording or indicating the functioning of a valve in combination with test equipment by measuring valve parameters
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Electrically Driven Valve-Operating Means (AREA)
Abstract
The invention provides a Foundation Fieldbus type controller for an electric valve actuator. The Foundation Fieldbus type controller for the electric valve actuator comprises a micro controller, a power source converting unit, a power source switching management unit, a phase sequence detection unit connected with the micro controller, a valve position detection unit connected with the micro controller, a switch panel connected with the micro controller, a moment monitoring unit connected with the micro controller, a display unit connected with the micro controller, a Foundation Fieldbus H1 communication unit connected with a communication interface card of an upper FCS bus control system through a Foundation Fieldbus bus communication interface, a motor driving unit connected with the micro controller and a remote control receiving unit. The switch panel is used for setting the different work states of the electric valve actuator, and in a manual state, an operator is allowed to use a switch on the switch panel to open or close a valve. The Foundation Fieldbus type controller for the electric valve actuator realizes remote real-time intelligent control and state monitoring on the electric valve actuator based on Foundation Fieldbus standards.
Description
Technical field
The present invention relates to a kind of Foundation Fieldbus field bus type fully digitalization electric device for valve control
Device, is particularly well-suited to electric device for valve, belongs to flow liquid process automatic field.
Background technology
The power driven equipment that electric device for valve uses as flow liquid process control field, owing to it uses alternating current asynchronous
Electric machines control technology, and remote signal automatic control technology, be widely used in the industries such as oil, chemical industry, power station, sewage disposal.
Present Domestic electric device for valve uses traditional analog control mode in a large number, i.e. with long-range 4 20mA electric current loops or
Person's 1-5V voltage signal is as remote control signal, and conventional DCS (Distributed Control System) control system is by exporting 4 20mA electricity
Stream ring controls the action of electric operator, and the valve opening physical location that Real-time Collection is connected with electric device for valve is defeated
Go out, realize the control to valve of the long-range Central Control Room.Due to the physical characteristic of analog signal itself, it is during remote transmission
There is loss, and field control cable is various, lays numerous and diverse, and system can not the weak point such as inline diagnosis.
The standard promulgated as international live bus foundation organization development, it is adaptable to cross the low speed sections of process automation
(Foundation Fieldbus H1, foundation fieldbus H1 part) based on ISO/OSI reference model development evolvement,
At present, H1 low speed bus develops into FF-H1 and FF-H2, transfer rate representative value be 31.25kbit/s, 1Mbit/s and
2.5Mbit/s;FF H1 is as the bottom-layer network of factory, and relatively general wide area network, for LAN, it is the low speed network segment.Its
It is made up of unified bus section or multibus section, it is also possible to by bridge mutual for the total segment of different transmission rates, different transmission medium
Join and constitute.FF-H1 is formed around communication system and two aspects of distributed network automatically system of industrial site
Its technical characteristic, technically combines the communication technology and network automatic technology, and its major technique includes (1) communication technology
(2) functional block technology (3) device Description Technology (4) system integration technology (5) system testing technology；Its main feature includes (1)
Supporting bus power (2) support essential safety (3) token bus access mechanism (4) content be widely applied layer.
Owing to FF-H1 uses for reference the functional block of DCS and Function Block Configuration technology, at the scene defined in field bus instrument or equipment
Multiple standards functional block (FB), every kind of functional block realizes specific application function；Including Resource Block (Resource Block), become
Send block (Transducer Block), PID block (PID Block), analog input block (AI), analog output
Block (AO), digital quantity input block (DI), digital output block (DO) etc..
It addition, FF-H1 is in order to support that the functional block of standard operates, the equipment that have employed describes (DD) technology, realizes bus
Instrument or the interoperability of equipment, share the functional block in different manufacturers bus apparatus.In order to carry out equipment description, FF-H1
Define corresponding DDL (Device Description Language, DDL), use equipment to describe compiling
Device, the source program that the equipment that DDL is write describes is converted into computer-readable file destination.Bus control system formally relies on
These readable file destinations understand the data sense of the bus apparatus of different manufacturer.
Along with greatly developing of modern digital bus technology and microcontroller technology, now, field bus technique is abroad
Ripe utilization is implemented in a large number.By field digital bussing technique and microcontroller technology are introduced traditional measuring instrument instrument
Table, can make traditional measuring instrument instrument have numerical calculation and a digital communicating ability, use Shielded Twisted Pair as bus,
Will be distributed over the on-the-spot multiple stage instrument of device and access bus network, according to the open communication specification standard promulgated, it is achieved remotely count
Data transmission and information between calculation machine and field instrument exchange, and form the automatic control system that various adaptation is actually needed.
Summary of the invention
It is an object of the invention to utilize international cutting edge technology, introduce foundation fieldbus and control technology
(Foundation Fieldbus H1), develops a kind of Foundation Fieldbus field bus-type valve electric device
Controller, overcomes traditional analog information to be not easy to transmission, and signal cable is various, transmitting procedure analog signal attenuation loss, and
It is not easy to multimode parameter signal feedback monitoring, is not easy to the weak points such as malfunction elimination and maintenance, use single pair of cable, with number
Word signal replaces analog signal, it is not necessary to extra analog/digital, digital-to-analog converting member, is led to by all of parameter information
Cross this single pair of cable transmission, finally realize the long-range real-time intelligent control to electric device for valve and status monitoring.The present invention
The technical scheme is that
A kind of Foundation Fieldbus field bus-type valve electric device controller, including microcontroller, also includes:
Power conversion unit, each direct current used in conversion output valve Valve Actuator Controller that external communication is powered
Source；
Power supply handover management element, powers the handover management powered with internal backup battery for external communication；
The Phase sequence detection unit being connected with microcontroller, for carrying out Acquisition Detection to the phase order of 3-phase AC of outside input；
The valve location detector unit being connected with microcontroller, for real time record and tracking valve physical location, by valve position
Confidence number is that valve position signal passes to micro controller unit；
The switch panel being connected with microcontroller, is arranged above with at least one switch, for setting the difference of electric device for valve
Duty, under manual mode, it is allowed to operator uses the switch on switch panel carry out valve opening or close valve events；
The moment monitoring means being connected with microcontroller, for being converted to linear measurable voltage letter by the torque amount that valve loads
Number it is supplied to microcontroller, it is achieved the monitoring to loading moment of the electric device for valve running；
The display unit being connected with microcontroller, the display at finishing man-machine interaction interface with check；
Foundation Fieldbus H1 communication unit, by Foundation Fieldbus bus communication interface and upper strata
The communication interface card of FCS bus control system is connected, for receiving valve opening that upper strata FCS bus control system sends, closing valve, stop
Only instruction, simultaneously by the current valve position signal of electric device for valve, loading moment signal, and the state parameter in running
Information is uploaded to FCS bus control system；
The electric-motor drive unit being connected with microcontroller, microcontroller, to electric-motor drive unit output motor control signal, drives
The positive/negative rotation of motor is made, it is achieved the control to electric device for valve, and valve is driven into appointment position；
The remote control receiver unit being connected with microcontroller, for receiving the instruction sent from remote controller, completes relevant parameter
Set.
Further,
Microcontroller be set with valve evolution to/close the force moment protection value in direction, if the torque amount monitored is more than micro-control
The evolution of device inner setting processed to/close direction force moment protection value, microcontroller output motor halt instruction immediately.
Further,
MODBUS-RTU communication protocol is followed according to setting between microcontroller and Foundation Fieldbus H1 communication unit
Interval (such as 250ms) of fixing time carries out the transmitted in both directions of data, and valve position signal parameter, loading moment signal are joined by microcontroller
Count, and multiple particular state parameter carries out packing coding and process according to the data form of agreement, and be uploaded in time
Foundation Fieldbus H1 communication unit, Foundation Fieldbus H1 communication unit again by parameter information according to
Foundation Fieldbus H1 agreement encodes, and finally uploads to Foundation Fieldbus H1 bus network
In, it is positioned at the FCS controller of Foundation Fieldbus H1 bus network directly from this Foundation Fieldbus
H1 bus network extracts the parameter information from microcontroller, thus completes production process based on FCS bus control system
Control；Meanwhile, microcontroller receives the action command that issues from FCS bus control system, by from Foundation
The MODBUS-RTU communication protocol decoding of Fieldbus H1 communication unit obtains, and microcontroller decoding obtains the action of reality and refers to
After order, performing the control strategy of microcontroller, output motor rotating drives signal to electric-motor drive unit, drives motor
Rotating action, is driven into the position that FCS bus control system is specified by valve；
The multiple particular state parameters uploading FCS bus control system include:
The parameter that whether working properly electric device for valve controller is；
Valve wide open, closed positions parameter；
Current execution action is valve opening or the parameter closing valve events；
Working status parameter, including manual mode/remote status/remote state；
Alarm signal parameter, including motor clamping stagnation parameter, the overtemperature prote action parameter of motor temperature protection switch.
Further,
The serial ports of microcontroller and Foundation Fieldbus H1 communication unit carry out isolating and interconnecting by optocoupler.
It is an advantage of the current invention that:
1) based on Foundation Fieldbus international standard, it is achieved the fully digitalization of electric device for valve, intelligent control
System；
2) more status data is obtained, 3) it is easy to on-line monitoring, system diagnostics and maintenance；
3) communications cable is saved, and hardware cost, save mounting cost.
4) automaticity is high, it is simple to diagnosis and maintenance；Save later maintenance time and maintenance cost.
Accompanying drawing explanation
Fig. 1 is microcontroller mainboard structure schematic diagram of the present invention.
Fig. 2 is the piece electrical structural representation of the present invention.
Fig. 3 is the topological structure schematic diagram that the present invention accesses FF bus network.
Detailed description of the invention
Below in conjunction with concrete drawings and Examples, the invention will be further described.
Foundation Fieldbus field bus-type valve electric device controller, as it is shown in figure 1, include micro-process
Device MSP430, and:
Power conversion unit, for external communication being powered (single-phase 220V/ three-phase 380V), conversion output direct current 3.3V power supply,
Direct current 5V power supply, and direct current 24V power supply；It is respectively used to microprocessor unit and external signal collection and processing unit, motor
(three-phase/single-phase) driver element is powered；External signal collection and processing unit include valve location detector unit etc.；
Power supply handover management element, powers the handover management powered with internal backup battery for external communication, when external exchange
When powering normal, the power supply handover management element described power conversion unit of control is output as microprocessor unit and external signal is adopted
Collection is powered with processing unit；When, under external power supply loss situation, by electric device for valve handwheel action, power supply being waken up up
Backup battery in handover management element, power supply handover management element controls backup battery and exports to microprocessor unit and outside
Signal acquiring and processing unit is powered；
The Phase sequence detection unit being connected with microcontroller, for carrying out Acquisition Detection to the phase order of 3-phase AC of outside input；
The valve location detector unit being connected with microcontroller, for real time record and tracking valve physical location, by valve position
Confidence number passes to micro controller unit；The physical location of valve location detector unit recordable valve opening and closing process, and by valve
Door open position record is saved in microcontroller memory, so that it is guaranteed that valve is being opened and closing course and power-off
After powering on, valve physical location is not lost again；Valve location detector unit gathers valve location by position sensor of valve and believes
Number；
The switch panel being connected with microcontroller, comprises a red knob switch, and a black rotary switch, is used for setting
Three different operating states (manually/remotely/remote control) of electric device for valve, under manual mode, this controller allows operation
Person uses black rotary switch valve opening or closes valve events；Under remote state, this controller allows operator to use remote controller
Enter menu Debugging interface, carry out the setting of parameter, such as, to closing limit point and driving the setting of limit point, split yawning moment
Protection value sets, to closing yawning moment protection value setting etc.；Under remote status, this controller accepts long-range FCS control system
The action command of the band Foundation Fieldbus H1 agreement sent, be automatically performed valve is driven between 0-100% right
The position answered；
The moment monitoring means being connected with microcontroller, for being converted to linear measurable voltage letter by the torque amount that valve loads
Number it is supplied to microcontroller, it is achieved the monitoring to loading moment of the electric device for valve running, if the torque amount monitored is big
The evolution set in this microcontroller to/close the force moment protection value in direction, this microcontroller will stop by output motor immediately
Only instruction, stops the operating of motor, and in liquid crystal display alert, thus realize the protection to valve；Pass through
The motor temperature signal of other related sensor collection, backup battery voltage signal, and the action of motor temperature protection switch
The duty switching signal (manually/remotely/remote control) transmitted on signal, and switch panel is all sent to microcontroller；
Foundation Fieldbus H1 communication unit, by Foundation Fieldbus bus communication interface and upper strata
FCS(field bus control system Fieldbus Control System) bus control system communication interface card be connected, be used for
Receive valve opening, pass valve, halt instruction that upper strata FCS bus control system sends, simultaneously by the current valve position of electric device for valve
Signal, loading moment signal, and the state parameter information in running are uploaded to FCS bus control system；
The electric-motor drive unit being connected with microcontroller, microcontroller, to electric-motor drive unit output motor control signal, drives
The positive/negative rotation of AC induction motor is made, it is achieved the control to electric device for valve, and valve is driven into appointment position the most at last.
The liquid crystal display being connected with microcontroller, for display valve current location directly perceived, motor temperature parameter, power
Square parameter, remote signal value, warning message etc.；Microcontroller is connected with display unit, by display unit finishing man-machine interaction circle
The display in face with check, microprocessor complete various signals are processed by set control logic, generate corresponding electricity
Machine control signal and alarm signal；
The remote control receiver unit being connected with microcontroller, for receiving the instruction sent from remote controller, completes relevant parameter
Set；
Microcontroller passes through serial communication interface, is connected with Foundation Fieldbus H1 communication unit；It is responsible for place specially
The Foundation Fieldbus H1 communication unit of reason Foundation Fieldbus H1 communication protocol, itself and microcontroller
The serial ports of unit is interconnected by high speed photo coupling, thus carries out the serial transmitted in both directions of data-signal；
Such as Fig. 2, shown in Fig. 3, during application, the present invention passes through Foundation Fieldbus H1 bus communication interface, with reference to existing
AG-181 principle in field bus design and implementation IEC61158 specification, uses AWG18 type armouring pair cable, compare "+,-"
Polarity, i.e. can be accessed by Foundation Fieldbus H1 bus network, and with FF equipment 1, FF equipment 2, FF equipment 3, FF sets
Standby 4 constitute a Foundation Fieldbus network segment, and in the present invention, electric device for valve controller sets as one of them FF
Standby (Foundation Fieldbus equipment)；Describe when FCS bus control system has loaded DD(equipment corresponding to this invention)
After file, FCS bus control system in long-range Central Control Room (it is completely compatible such as the PlantWeb DeltaV of EMERSON company,
The international mainstream systems such as the Experion PKS PROCESS KNOWLEDGE SYSTEM of HONEYWELL company) can ONLINE RECOGNITION access this and set
Standby.
In long-range FCS bus control system, FCS bus engineer can recognize that the multiple functions in this invention online
Block, in the invention, defines a Resource Block (Resource Block), a pick-up block (Transducer altogether
Block), PID block (PID Block), several analog input block (AI), an analog output block
(AO), several digital quantity input blocks (DI), a digital quantity IOB (DO).Wherein, AO block is used for long-range continuous type control valve
Door aperture；AI block is used for feeding back currently practical valve opening (i.e. valve position signal) and currently practical loading moment value size；DI block
For the encoded radio of the current multiple state parameters of feedback device, DO block is used for realizing discrete type and controls valve.
Follow between microcontroller and Foundation Fieldbus H1 communication unit MODBUS-RTU communication protocol by
Carry out the transmitted in both directions of data according to setting time interval (such as 250ms), valve position signal parameter, loading moment are believed by microcontroller
Number parameter, and multiple particular state parameter carries out packing coding according to the data form of agreement and processes, and be uploaded in time
Foundation Fieldbus H1 communication unit, Foundation Fieldbus H1 communication unit again by parameter information according to
Foundation Fieldbus H1 agreement encodes, and finally uploads to Foundation Fieldbus H1 bus network
In, it is positioned at the FCS controller of Foundation Fieldbus H1 bus network directly from this Foundation Fieldbus
H1 bus network extracts the parameter information from microcontroller, thus completes production process based on FCS bus control system
Control；Meanwhile, microcontroller receives the action command that issues from FCS bus control system, by from Foundation
The MODBUS-RTU communication protocol decoding of Fieldbus H1 communication unit obtains, and microcontroller decoding obtains the action of reality and refers to
After order, performing the control strategy of microcontroller, output motor rotating drives signal to electric-motor drive unit, drives motor
Rotating action, finally, motor passes through electric machine actuating mechanism mechanical transmission component thrust output, and valve is driven into FCS bus
The position that control system is specified；
The multiple particular state parameters uploading FCS bus control system include:
The parameter that whether working properly electric device for valve controller is；
Valve wide open, closed positions parameter；
Current execution action is valve opening or the parameter closing valve events；
Working status parameter, including manual mode/remote status/remote state；
Alarm signal parameter, including motor clamping stagnation parameter (torque amount monitored more than microcontroller set evolution to/
When closing the force moment protection value in direction, it is judged that for motor clamping stagnation), the overtemperature prote action parameter of motor temperature protection switch.
FCS bus control system finally realizes the long-range real-time intelligent control to electric device for valve and status monitoring.
Claims (5)
1. a Foundation Fieldbus field bus-type valve electric device controller, including microcontroller, its feature
It is, also includes:
Power conversion unit, each direct current used in conversion output valve Valve Actuator Controller that external communication is powered
Source；
Power supply handover management element, powers the handover management powered with internal backup battery for external communication；
The Phase sequence detection unit being connected with microcontroller, for carrying out Acquisition Detection to the phase order of 3-phase AC of outside input；
The valve location detector unit being connected with microcontroller, for real time record and tracking valve physical location, by valve position
Confidence number is that valve position signal passes to micro controller unit；
The switch panel being connected with microcontroller, is arranged above with at least one switch, for setting the difference of electric device for valve
Duty, under manual mode, it is allowed to operator uses the switch on switch panel carry out valve opening or close valve events；
The moment monitoring means being connected with microcontroller, for being converted to linear measurable voltage letter by the torque amount that valve loads
Number it is supplied to microcontroller, it is achieved the monitoring to loading moment of the electric device for valve running；
The display unit being connected with microcontroller, the display at finishing man-machine interaction interface with check；
Foundation Fieldbus H1 communication unit, by Foundation Fieldbus bus communication interface and upper strata
The communication interface card of FCS bus control system is connected, for receiving valve opening that upper strata FCS bus control system sends, closing valve, stop
Only instruction, simultaneously by the current valve position signal of electric device for valve, loading moment signal, and the state parameter in running
Information is uploaded to FCS bus control system；
The electric-motor drive unit being connected with microcontroller, microcontroller, to electric-motor drive unit output motor control signal, drives
The positive/negative rotation of motor is made, it is achieved the control to electric device for valve, and valve is driven into appointment position.
2. Foundation Fieldbus field bus-type valve electric device controller as claimed in claim 1, its feature
It is, also includes:
The remote control receiver unit being connected with microcontroller, for receiving the instruction sent from remote controller, completes relevant parameter
Set.
3. Foundation Fieldbus field bus-type valve electric device controller as claimed in claim 1 or 2, its
It is characterised by:
Microcontroller be set with valve evolution to/close the force moment protection value in direction, if the torque amount monitored is more than micro-control
The evolution of device inner setting processed to/close direction force moment protection value, microcontroller output motor halt instruction immediately.
4. Foundation Fieldbus field bus-type valve electric device controller as claimed in claim 1 or 2, its
It is characterised by:
MODBUS-RTU communication protocol is followed according to setting between microcontroller and Foundation Fieldbus H1 communication unit
Interval of fixing time carries out the transmitted in both directions of data, microcontroller by valve position signal parameter, loading moment signal parameter, and multiple
Particular state parameter carries out packing coding according to the data form of agreement and processes, and is uploaded to Foundation in time
Fieldbus H1 communication unit, Foundation Fieldbus H1 communication unit again by parameter information according to Foundation
Fieldbus H1 agreement encodes, and finally uploads to, in Foundation Fieldbus H1 bus network, be positioned at
The FCS controller of Foundation Fieldbus H1 bus network is directly from this Foundation Fieldbus H1 bus network
Network extracts the parameter information from microcontroller, thus completes the control of production process based on FCS bus control system；With
Time, microcontroller receives the action command that issues from FCS bus control system, by from Foundation
The MODBUS-RTU communication protocol decoding of Fieldbus H1 communication unit obtains, and microcontroller decoding obtains the action of reality and refers to
After order, performing the control strategy of microcontroller, output motor rotating drives signal to electric-motor drive unit, drives motor
Rotating action, is driven into the position that FCS bus control system is specified by valve；
The multiple particular state parameters uploading FCS bus control system include:
The parameter that whether working properly electric device for valve controller is；
Valve wide open, closed positions parameter；
Current execution action is valve opening or the parameter closing valve events；
Working status parameter, including manual mode/remote status/remote state；
Alarm signal parameter, including motor clamping stagnation parameter, the overtemperature prote action parameter of motor temperature protection switch.
5. Foundation Fieldbus field bus-type valve electric device controller as claimed in claim 1 or 2, its
It is characterised by:
The serial ports of microcontroller and Foundation Fieldbus H1 communication unit carry out isolating and interconnecting by optocoupler.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610377457.3A CN105840900A (en) | 2016-05-31 | 2016-05-31 | Foundation Fieldbus type controller for electric valve actuator |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610377457.3A CN105840900A (en) | 2016-05-31 | 2016-05-31 | Foundation Fieldbus type controller for electric valve actuator |
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ID=56595221
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106441858A (en) * | 2016-12-05 | 2017-02-22 | 重庆享控智能科技有限公司 | Valve pre-judgment monitoring system and method |
| CN111443640A (en) * | 2020-04-18 | 2020-07-24 | 烟台华晟电子科技有限公司 | Valve position controller based on network communication modularization |
| CN115219833A (en) * | 2022-08-03 | 2022-10-21 | 蚌埠日月仪器研究所有限公司 | Valve driving device test information acquisition system |
| CN115327985A (en) * | 2022-08-24 | 2022-11-11 | 常州电站辅机股份有限公司 | Control system and electric actuator system |
| CN116068946A (en) * | 2023-03-15 | 2023-05-05 | 苏州成科自控设备有限公司 | Electric valve controller, visual programming system and visual programming method |
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| CN111443640A (en) * | 2020-04-18 | 2020-07-24 | 烟台华晟电子科技有限公司 | Valve position controller based on network communication modularization |
| CN115219833A (en) * | 2022-08-03 | 2022-10-21 | 蚌埠日月仪器研究所有限公司 | Valve driving device test information acquisition system |
| CN115219833B (en) * | 2022-08-03 | 2024-04-16 | 蚌埠日月仪器研究所有限公司 | Experimental information acquisition system of valve drive device |
| CN115327985A (en) * | 2022-08-24 | 2022-11-11 | 常州电站辅机股份有限公司 | Control system and electric actuator system |
| CN116068946A (en) * | 2023-03-15 | 2023-05-05 | 苏州成科自控设备有限公司 | Electric valve controller, visual programming system and visual programming method |
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