CN202257213U

CN202257213U - Valve electric device suitable for bus and wireless control

Info

Publication number: CN202257213U
Application number: CN2011203033371U
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: 2012-05-30
Anticipated expiration: 2021-08-13

Abstract

The utility model discloses a valve electric device suitable for bus and wireless control. The electric device consists of a main body part and a control part; a mechanical part comprises a motor specific for a valve, a speed reducer, a stroke control mechanism, a torque control mechanism, an opening indicator, a manual/electrical switching mechanism and a field operating mechanism; and the control part consists of a substrate, a mainboard and an expander board. A temperature sensor, a buzzer, a power module and a control signal output unit are arranged on the substrate; the mainboard is connected with a debugging interface, a resetting unit, a clock unit, a liquid crystal display interface, an analog signal input interface and a wireless interface; and the expander board comprises a switching value signal input interface, a bus communication interface and an address setting module. In addition, a bus module, a liquid crystal module and a wireless module can be selected if needed. With the electric device, switching and opening of the valve can be remotely monitored through the bus and wireless control.

Description

The electric device for valve of fieldbus and controlled in wireless

Technical field

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

Background technology

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 valve-off 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 duty, 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 topworks 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 total system in some specific occasions.If in the production scene of poisonous, explosive or inflammable medium, artificial field control is just very dangerous.Far distance controlled is just more necessary in this type application scenario.

ZL200520134573.X discloses the fieldbus 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 electrically operated valve, operated pneumatic valve electric operator 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 oscillating 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 fieldbus and controlled in wireless is provided, its objective is through fieldbus or wireless valve is carried out Long-distance Control.After adopting this device, can and wirelessly carry out the control of switch and aperture through fieldbus to valve.

To achieve these goals; The technical scheme that the present invention takes is: a kind of can fieldbus 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 part and control section; Main part comprises: valve motor special, speed reduction unit, 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 prior art, 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 sensor, hummer; 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 switching value signal input interface, field bus communication interface and address setting 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 sensor has adopted DS1820 unibus digital thermometer; Control signal output unit output signal is used for direct by-pass valve control 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 is made up of field bus communication interface, address setting module and switching value signal input interface, and wherein field-bus interface can external bus module, and the bus module of support of the present invention 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 setting module 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 fieldbus 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 status.

Description of drawings

Figure is for being denoted as: 1, base plate (1), 2, mainboard, 3, expansion board, 4, temperature sensor, 5, hummer, 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 setting 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 instructions 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 sensor (4), hummer (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 made up of switching value signal input interface (18), field bus communication interface (19) and address setting module (20), 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 sensor (4), power supply, power light, 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 light 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; Hummer (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 technical scheme carry out; Or without improving design of the present invention and technical scheme are directly applied to other occasion, all protection scope of the present invention it.

Claims

One kind can fieldbus 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 part and control section, and main part comprises: valve motor special, speed reduction unit, 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); Described control section base plate comprises temperature sensor (4), hummer (7), power module (6) and control signal output unit (5), and what described temperature sensor (4) adopted is DS1820 unibus 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 by-pass valve control motor special.
2. the electric device for valve of fieldbus according to claim 1 and controlled in wireless is characterized in that: described control section expansion board (3) comprises switching value signal input interface (18), field bus communication interface (19) and address setting 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 setting module 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.