CN102359638A

CN102359638A - Valve electric device for field bus and wireless control

Info

Publication number: CN102359638A
Application number: CN2011102400306A
Authority: CN
Inventors: 项美根; 韩新民; 项晓明; 罗安明
Original assignee: HUANGSHAN LIANGYE VALVE CO Ltd
Current assignee: HUANGSHAN LIANGYE VALVE CO Ltd
Priority date: 2011-08-13
Filing date: 2011-08-13
Publication date: 2012-02-22

Abstract

The invention relates to a valve electric device capable of realizing the field bus and wireless control. The electric device consists of a main body part and a control part. A mechanical part comprises a special valve motor, a speed reducer, a stroke control mechanism, a torque control mechanism, an opening degree indictor, a hand electric switching mechanism and a field operation mechanism, and the control parts consists of a bottom plate, a main plate and an expansion plate. A temperature sensor, a buzzer, a power supply module and a control signal output unit are arranged on the bottom plate, the main plate is connected with a debugging interface, a reset unit, a clock unit, a liquid crystal display interface, an analog signal input interface and a wireless interface, the expansion plate comprises a switching value signal input interface, a field bus communication interface and an address setting module, and in addition, a bus module, a liquid crystal module and a wireless module can be selected according to requirements. When the electric device is adopted, the remote monitoring on the opening and the closing and the opening degree of a valve can be realized by a field bus and a wireless mode.

Description

The electric device for valve of Field bus and controlled in wireless

Technical field

This is bright to be electric device for valve, relate in particular to a kind of can Field bus and the electric device for valve of controlled in wireless.

Background technique

The monitoring technology of pipe network system development at present is than very fast, and most of pipe network system has all been built the SCADA system, has improved the monitoring efficient to pipe network greatly.But with regard to the control of valve, most of areas is small and medium cities especially, all also are in the manually-operated stage.Therefore can not effectively implement scheduling, when unexpected incidents (like booster, leakage etc.) take place, owing to timely throttle down results in greater loss to pipe network.Thereby the necessary effective scheme of control system proposition one cover to valve.

Along with industrial automation and evolution of embedded technology, the mode of traditional hand mechanical adjustment is no longer practical in many occasions.Utilize network to realize remote monitoring for people accept extensively, the embedded network monitoring technology is progressively full-fledged under this condition just.The user uses the field apparatus of web browser through the built-in web server of Ethernet remote access, not only can carry out remote monitoring to its working state, but also can realize control in real time to the monitored device sending controling instruction.Realize the industrial automation management of pipe network system, just be unable to do without the actuator in this pipe network system of automatic valve.This has higher requirement to the intelligent of electric valve executing mechanism controller.Simultaneously, need a plurality of valve interlock controls, reach the control requirement of whole system in some specific occasions.If in the production scene of poisonous, explosive or inflammable medium, artificial field control is just very dangerous.Distant control is just more necessary in this type application.

ZL200520134573.X discloses the Field bus valve positioner, comprises the communications protocol chip circuit, communication interface circuit, time news signal input circuit, the control signal output circuit that are connected with power circuit; The communications protocol chip circuit comprises the protocol chip that contains microcontroller circuit; Power circuit also connects and provides power supply to detecting LED instructed voltage testing circuit; Return the news signal input circuit and be connected protocol chip, and also connect electric valve, pneumatic valve electric actuator with corresponding input interface and output interface with corresponding input interface and output interface with the control signal output circuit; The communications protocol chip circuit also connects reset circuit, crystal oscillation circuit, address and chip features word configuration circuit respectively; The communication interface circuit is connected to the communications protocol chip circuit and is connected to two-way RS485 bus.

Because the industrial communication agreement does not have unified standard at present, has various protocols, more than invention has only realized a kind of communication interface, and this just makes it can only be applicable to specific occasions.The present invention is directed to this problem, having proposed can multiple line and the electric device for valve of controlled in wireless, makes it possess networking mode more flexibly, and can be used for the occasion of being inconvenient to connect up.

Summary of the invention

Problem to be solved by this invention is: a kind of electric device for valve that can realize multiple Field bus and controlled in wireless is provided, its objective is through Field bus or wireless valve is carried out telecontrol.After adopting this device, can and wirelessly carry out the control of switch and aperture through Field bus to valve.

To achieve these goals; The technological scheme that the present invention takes is: a kind of can Field bus and the electric device for valve of controlled in wireless; Be used for valve is carried out switch and aperture control; Described electric device for valve is made up of main body and control section; Main body comprises: valve motor special, retarder, range controlling mechanism, torque controling mechanism, indicator of opening, the moving switching mechanism of torch and execute-in-place mechanism (this part belongs to conventional existing technology, here not in narration); Control section is made up of base plate, mainboard and expansion board; Base plate comprises power module, control signal output unit, temperature transducer, buzzer; Mainboard comprises microcontroller and the debugging interface that links to each other with microcontroller, reset unit, clock unit, LCD interface, analog input interface and wave point; Expansion board comprises that switching value signal input interface, field bus communication interface and address are provided with module.

Concrete technical measures also comprise: power module provides four groups of power supply confession systems to use in the base plate, is respectively 12V, 5V, 5V, 3.3V; Temperature transducer has adopted DS1820 monobus digital thermometer; Control signal output unit output signal is used for direct control valve motor special;

That microcontroller adopts in the mainboard is ATmega128; Coupled have a passive crystal oscillator 18M of debugging interface, reset unit and clock circuit; Also dispose LCD interface, analog input interface and wave point in addition, can external as required Liquid Crystal Module, wireless module.

Expansion board by field bus communication interface, address module is set and the switching value signal input interface is formed, and wherein field-bus interface can external bus module, and the bus module that the body invention is supported comprises Modbus, CAN bus and Profibus-DP; The switching value signal input interface obtains outside switching value signal and it is sent to microcontroller handles, and switching value signal involved in the present invention has: valve opening signal, pass valve signal, stop signal, valve reach a signal, valve closes the signal that puts in place, opens valve torque overload signal and closes valve torque overload signal; The address is provided with module and is made up of toggle switch, is used to be provided with the address of electric device for valve.

Beneficial effect

Electric device for valve involved in the present invention has been realized through Field bus and wireless mode valve being carried out switch and aperture control, and the various parameters that can also gather valve are monitored the valve running state.

Description of drawings

Figure is for being denoted as: 1, base plate (1), 2, mainboard, 3, expansion board, 4, temperature transducer, 5, buzzer, 6, power module; 7, control signal output unit, 8, microcontroller, 9, debugging interface, 10, reset unit, 11, clock unit; 12, LCD interface, 13, analog input interface, 14, wave point, 15, Liquid Crystal Module, 16, valve position sensor; 17, wireless module, 18, the switching value signal input interface, 19, the field bus communication interface, 20, the address is provided with module, 21, bus module has Modbus; 22, CAN bus, 23, Profibus-DP, 24, with switching value signal, 25, valve opening signal, 26, close valve signal; 27, stop signal, 28, valve reaches a signal, 29, valve closes the signal that puts in place, 30 open valve torque overload signal, and 31, close valve torque overload signal.

Make brief description in the face of the expressed content of each width of cloth accompanying drawing of this specification down:

Fig. 1 is a circuit block diagram of the present invention

Fig. 2 is the circuit theory diagrams of base plate among Fig. 1

Fig. 3 is the circuit theory diagrams of mainboard among Fig. 1

Fig. 4 is the circuit theory diagrams of expansion board among Fig. 1

Fig. 5 is the circuit theory diagrams of Modbus among Fig. 1

Fig. 6 is the circuit theory diagrams of CAN bus among Fig. 1

Fig. 7 is the circuit theory diagrams of Profibus-DP among Fig. 1

Embodiment

Below in conjunction with accompanying drawing and instance this valve is described in further detail: Fig. 1 is the circuit block diagram of controller of the present invention, and controller is made up of base plate (1) mainboard (2) and expansion board (3); Base plate (1) is made up of temperature transducer (4), buzzer (5), power module (6) and control signal output unit (7); Mainboard (2) is made up of microcontroller (8) and the debugging interface (9) that links to each other with microcontroller (8), reset unit (10), clock unit (11), LCD interface (12), analog input interface (13) and wave point (14), as required can external Liquid Crystal Module (15), valve position sensor (16) and wireless module (17); Expansion board is provided with module (20) by switching value signal input interface (18), field bus communication interface (19) and address and constitutes, and wherein the bus module with field bus communication interface (19) has Modbus (21), CAN bus (22) and Profibus-DP (23); The switching value signal that links to each other with switching value signal (24) input interface has: valve opening signal (25), pass valve signal (26), stop signal (27), valve reach a signal (28), valve closes the signal (29) that puts in place, opens valve torque overload signal (30), closes valve torque overload signal (31).

Fig. 2 is the circuit theory diagrams of base plate among Fig. 1 (1), is made up of temperature transducer (4), power supply, power supply indicator, power interface, control relay circuit; Wherein power supply is provided by civil power 220V; Change stable 12V voltage into through the AC-DC module; 12V voltage provides one group of 5V voltage through LM7805, obtains other one group of 5V voltage of isolating fully by IB1205 in addition, and this isolation 5V power supply obtains 3.3V voltage through behind the ASM1117; Power supply indicator is used for the power supply status of indication mechanism; Control relay circuit has adopted optocoupler 6N137 to carry out Signal Spacing, by ULN2003 signal is amplified the back then relay is controlled; Buzzer (5) is controlled by a triode.

Fig. 3 is the circuit theory diagrams of mainboard among Fig. 1, and that microcontroller (8) adopts is ATmega128, and what link to each other with microcontroller (8) has reset circuit, clock circuit, wave point, liquid crystal interface, JTAG debugging interface and an A/D convertor circuit.

Fig. 4 is the former topic figure of the circuit of expansion board among Fig. 1, comprises the switching value signal input interface, toggle switch, Modbus interface, CAN bus/Profibus-DP interface; Wherein the switching value signal is provided by the unlatching and the closure of relay, and through offering microcontroller after the optocoupler TIL1117 isolation.

Fig. 5 is the circuit theory diagrams of Modbus among Fig. 1, comprises RS232 circuit and 485 interfaces, and these two kinds of interfaces all can be used for the communication of Modbus; Wherein the RS232 circuit is realized by MAX232 and peripheral electric capacity; 485 interfaces are realized its function by optocoupler 6N137 and 485 control chip SN65LBC184.

Fig. 6 is the circuit theory diagrams of CAN bus among Fig. 1, and the CAN bus module is realized its function by the protocol chip SJA1000 of CAN bus and bus control chip PCA82C250 and optocoupler 6N137.

Fig. 7 is the circuit theory diagrams of Profibus-Dp among Fig. 1, and the Profibus-DP module realizes its function by protocol chip SPC3 and bus control chip ADM2486 and active crystal oscillator 48MHz.

Combine accompanying drawing that the present invention has been carried out exemplary description above; Obviously the concrete realization of the present invention does not receive the restriction of aforesaid way; As long as adopted the improvement of the various unsubstantialities that method of the present invention design and technological scheme carry out; Or without improving design of the present invention and technological scheme are directly applied to other occasion, all protection scope of the present invention it.

Claims

One kind can Field bus and the electric device for valve of controlled in wireless; Be used for valve is carried out switch and aperture control; Described electric device for valve is made up of main body and control section, and main body comprises: valve motor special, retarder, range controlling mechanism, torque controling mechanism, indicator of opening, the moving switching mechanism of torch and execute-in-place mechanism; It is characterized in that: control section is made up of base plate (1), mainboard (2) and expansion board (3).
2. the electric device for valve of Field bus according to claim 1 and controlled in wireless; It is characterized in that: described control section base plate comprises temperature transducer (4), buzzer (7), power module (6) and control signal output unit (5), and what described temperature transducer (4) adopted is DS1820 monobus digital thermometer; Described power module (6) provides 1 road 12V, 2 road 5V, 1 road 3.3V power supply for system; Said control signal output unit (5) is used for the control valve motor special.
3. the electric device for valve of Field bus according to claim 1 and controlled in wireless; It is characterized in that: microcontroller (8) is arranged on the described control section mainboard (2), and what be connected with microcontroller (8) has debugging interface (9), reset unit (10), clock unit (11), LCD interface (12), analog input interface (13), a wave point (14); Can external Liquid Crystal Module (15), valve position sensor (16) and wireless module (17); That described microcontroller (8) adopts is ATmega128; Described debugging interface is JTAG, is used for the download of program and the debugging of hardware; Described reset unit (10) is made up of resistance-capacitance circuit and button, can electrification reset and hand reset; Described clock unit (11) is the passive crystal oscillator of 18M; Described LCD interface (12) can be connected with 1602 LCD MODULEs (15); That the communications protocol chip of said wireless module (17) adopts is CC1100.
4. the electric device for valve of Field bus according to claim 1 and controlled in wireless is characterized in that: described control section expansion board (3) comprises that switching value signal input interface (18), field bus communication interface (19) and address are provided with module (20); What be connected with described field bus communication interface (19) is bus module (32); Described switching value signal (24) input interface is made up of optocoupler TIL1117 and relay; Described address is provided with module and is made up of toggle switch; Described field bus communication interface (19) can be connected with Modbus (21), CAN bus (22) and Profibus-DP (23) module.