CN1807949A - Electric valve device - Google Patents
Electric valve device Download PDFInfo
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- CN1807949A CN1807949A CN 200610002762 CN200610002762A CN1807949A CN 1807949 A CN1807949 A CN 1807949A CN 200610002762 CN200610002762 CN 200610002762 CN 200610002762 A CN200610002762 A CN 200610002762A CN 1807949 A CN1807949 A CN 1807949A
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Abstract
The invention relates to an electric valve which comprises a control unit, a communication interface, an electric valve drive detecting unit and a sensor input port. Each unit is mounted inside the protective cover integrated with the valve body. Wherein, the control unit is the instruction control center of said device which can independently or controlled by outer instruction control other units to realize the control of said valve. The invention has simple structure, fewer devices and lower cost.
Description
Technical field
The present invention relates to valving, relate in particular to a kind of electric valve device.
Background technique
Before the present invention produces, the control of convection cell in the industry, state-of-the-art automation control system FCS-field bus system (the FCS:Facility Control System that adopt as shown in Figure 1 more, apparatus control system), its simplest structure is made up of operational administrative terminal 101, FCS controller 102, communication network 103, communication network 104, RTU 105 (RTU:Remote Terminal Unit RTU), RTU 107, sensor 106, electric valve drive unit 108 and electric valve 109.Its working procedure is: sensor 106 is with the temperature of the fluid that collects, pressure, information such as flow become the curtage signal, this signal is transformed into by RTU 105 can be in the digital signal of transmitted over communications networks, again by communication network 103, send into FCS controller 102, information after FCS controller 102 will be handled on the one hand after with this information processing reports operational administrative terminal 101, (or under instruction of operational administrative terminal 101) generation automatically is to the control command of corresponding valve 109 on the one hand, this control command is by communication network 104, be sent to corresponding RTU 107, RTU 107 becomes electric valve drive unit 108 discernible control signals with this command conversion, order corresponding electric valve drive unit 108 work, the command conversion that electric valve drive unit 108 is sent corresponding RTU 107 here becomes voltage or current drives electric valve 109 to open or close action.
FCS intelligent industrial control system no doubt is current state-of-the-art intelligent industrial control system, but by Fig. 1 and foregoing working procedure as can be seen, it also has the following disadvantages and defective in the control of convection cell:
1, control system complex structure, in the control system of convection cell, except that the electric valve that the sensor and the convection cell of test fluid parameter are controlled, also there are unnecessary or very unnecessary equipment such as different types of RTU, electric valve drive unit, controller, operational administrative terminal, communication network in a large number.
2, the system equipment kind is many, quantity is big, the RTU 105 of a connection sensor, the sensor that can only connect 2～3 same kinds usually, the RTU 107 that connects the electric valve drive unit can only connect an electric valve drive unit usually, and two kinds of RTU are not general.Often kind or the model because of the kind difference of sensor, communication network difference, RTU also can be varied in the practical application, and its quantity increases along with the increase of number of sensors, the electric valve drive unit is also different with the same difference because of electric valve of RTU, also increases along with the increase of electric valve quantity.
3, system cost height, the price of a RTU be several times and even tens times of small-sized electric valve price normally, and a cover FCS control system cost is hundreds thousand of often and even millions of, are sensor and electric valve price tens of times.
4, information flow link multisystem reliability is low: information at least will be through 5 medium taches from the sensor to the electric valve, any link breaks down, all will influence the proper functioning of system, often adopt standby system in order to increase reliability in actual applications, increase system cost.
5, control is too concentrated, and security risk is big.System depends critically upon FCS controller or operational administrative terminal, in case FCS controller or bookkeeping terminal go wrong, will cause system crash.
Summary of the invention
For addressing the above problem, the invention provides a kind of telecommunication function that has, can external pressure, sensor such as temperature, and can be automatically according to sensor monitors to the parameters such as temperature, pressure, flow and time of fluid control fluid, driving of current collection movable valve and monitoring and intelligent management are controlled in the multi-functional electric valve device of one.
The technical solution used in the present invention is: with control unit; communication interface; electric valve drives monitoring cell and combines; and be installed in the safety cover that the valve body with electric valve device of the present invention combines; with the communication technology; computer technology; sensor technology and electric valve technology combine; communication interface promptly is set on electric valve; sensor interface; the electric valve drive circuit; valve opening detection device and with single-chip microcomputer or microprocessor; CPU etc. are as control unit; scm software or other control software are installed on control unit; and with said apparatus; equipment or circuit all are installed in the safety cover that the valve body with electric valve device of the present invention combines; make valve have communication capacity as an independent individual; the automatic control ability of fluid parameter detectability and convection cell, thus reach the simplified control system structure; improve the control system Security; reduce the purpose of control system cost.
Electric valve device of the present invention comprises: control unit, communication interface, electric valve drive monitoring cell; described control unit, described communication interface, described electric valve drive monitoring cell and all are installed in the safety cover that the valve body with electric valve device of the present invention combines, wherein:
Described control unit is the command and control center as electric valve device of the present invention, is used for described communication interface, described electric valve is driven monitoring cell, drives and monitor by the valve of described electric valve driving monitoring cell to electric valve device of the present invention;
Described communication interface is as the signal transmission passage between described control unit and the external environment condition, is used to receive the signal of outside input and this signal is passed to described control unit, and the signal that also is used for described control unit is transmitted sends to the outside;
Described electric valve drive monitoring cell be used to receive described control unit output be intended to control the signal of described valve and produce the switch motion of controlling described valve according to this signal, detect the aperture of described valve and give described control unit the gained feedback information.
Electric valve device of the present invention also comprises the sensor access interface; be used to receive the signal that external sensor transmits and this signal is passed to described control unit; described control unit can receive signal that described sensor access interface transmitted and described sensor access interface is implemented monitoring and control, and described sensor access interface also is installed in the described safety cover.
The communication interface of electric valve device of the present invention can be CAN BUS communication interface, MODBUS communication interface, PROFIBUS communication interface, 485 communication interfaces, tcp/ip communication interface or other serial communication interfaces.
The communication interface of electric valve device of the present invention, the external sensor of current type that is output as of sensor access interface are or/and the external sensor that is output as voltage type.
The electric valve of electric valve device of the present invention drives monitoring cell and comprises electric valve drive circuit, valve opening detection device, motor and speed reduction gearing, wherein:
Described electric valve drive circuit be used to receive described control unit output be intended to control the signal of described motor and produce the switch motion of controlling described motor according to this signal;
Described valve opening detection device is used to detect the aperture of described valve and gives described control unit with the gained feedback information;
Thereby described motor can be at described control unit and is realized by described speed reduction gearing that spool shaft to electric valve device of the present invention drives and controls under via the commander of described electric valve drive circuit control and realize described valve is driven and controls;
Described speed reduction gearing is used for sending the driving force that described motor is exported to described spool shaft.
The electric valve drive circuit of electric valve device of the present invention comprises: the switching circuit that the buffer circuit that buffer circuit, detection protective circuit, several photo couplers are formed and several bidirectional triode thyristors are formed, wherein:
Described buffer circuit is used for the signal that described control unit transmits is cushioned reinforcement rear driving buffer circuit;
Described buffer circuit is used to receive controlling of described buffer circuit and drives described switching circuit;
Described switching circuit is used to receive controlling of described buffer circuit and operation that described motor is carried out open and close, just changes, reverses;
Described detection protective circuit is used to detect described operation of motor, and gives described control unit with the gained feedback information.
The advantage and the good effect of technical solution of the present invention are: simple in structure, gather multi-function in integral whole, and device category and quantity are few; Can reduce the information flow link, improve the reliability of system; No longer place one's entire reliance upon and go up the control of level controlling system, maybe can cancel upper control system to the requirement of last level controlling system, reduce system cost thereby reduce; When last level controlling system breaks down, can not cause system crash, improve system reliability; Be no longer dependent on external RTU and external valve actuator, simplied system structure reduces system cost; Can cancel special-purpose fluid parameter detection system and fluid detection network, reduce system cost.
Description of drawings
Fig. 1 is the FCS-field bus system structural representation of prior art;
Fig. 2 is the structural representation of electric valve device of the present invention;
Fig. 3 is the intelligence control circuit schematic representation of electric valve device of the present invention;
Fig. 4 is the communication interface circuit schematic representation of electric valve device of the present invention;
Fig. 5 is the sensor interface circuitry schematic representation of electric valve device of the present invention;
Fig. 6 is the valve opening testing circuit schematic representation of electric valve device of the present invention;
Fig. 7 is the valve opening detection device structural representation of electric valve device of the present invention;
Fig. 8 is the electric valve drive circuit schematic representation of electric valve device of the present invention;
Fig. 9 is the structural representation of the application example one of electric valve device of the present invention;
Figure 10 is the structural representation of the application example two of electric valve device of the present invention;
Figure 11 is the example structure skeleton diagram of electric valve device of the present invention.
The drawing reference numeral brief description:
Among Fig. 1: 101. operational administrative terminals, 102.FCS controller, 103. communication networks, 104. communication networks, 105.RTU, 106. sensors, 107.RTU, 108. electric valve drive units, 109. electric valves.
Among Fig. 2: 1. valve body, 2. motor, 3. speed reduction gearing, 4. intelligence control circuit plate, 5. valve opening detection device, 6. safety cover, 7. fixing bolt, 8. spool shaft;
Among Fig. 3: 301.STC89C516AD single-chip microcomputer, 302. communication interfaces, 303. valve opening testing circuits, 5. valve opening detection device, 304. electric valve drive circuits, 305,306,307. sensor access interface (or being called for short sensor interface);
Among Fig. 4: the 301.STC89C516AD single-chip microcomputer, 302. communication interfaces, 402.SJA100 CAN communication protocol specific chip, 403.PCA82C00 transceiver special chip, A.B. are the correspondence with foreign country connecting line;
Among Fig. 5: the 301.STC89C516AD single-chip microcomputer, 305. sensor access interface, 502. sensor access interface circuit (sensor input filtering buffer circuit), this circuit is Chip Microcomputer A commonly used/D conversion interface circuit, the no longer detailed mark of component parameters;
Among Fig. 6: 301. single-chip microcomputers, 303. valve opening testing circuits, 702. light emitting diodes, 703. photosensitive double-triode valves, this circuit are the computer mouse universal circuit, the no longer detailed mark of component parameter;
Among Fig. 7: 8. spool shaft, 702. light emitting diodes, 703. photosensitive double-triode valves, 704. grid dishes, 705. grid retaining, 706. grid holes, wherein light emitting diode, photosensitive double-triode valve illustrate referring to Fig. 6;
Among Fig. 8: 301. single-chip microcomputers, 304. electric valve drive circuits, 802. single-chip microcomputer output buffers, 803. the detection protective circuit, Q1～Q5 is a controllable silicon output type photo coupler, and BT1～BT5 is a bidirectional triode thyristor, this circuit is Micro Controller Unit (MCU) driving circuit commonly used, the no longer detailed mark of component parameter;
Among Fig. 9: 901. electric valve devices of the present invention, 902. pressure transducers;
Among Figure 10: 1001. operational administrative terminals, 1002. electric valve devices of the present invention, 1003. communication networks.
Among Figure 11: 1101. control units, 1102. electric valve drives monitoring cell, 301. single-chip microcomputer, 302. communication interfaces, 303. valve opening testing circuits, 304. electric valve drive circuit, 305,306,307. sensor access interface, 2. motor, 3. speed reduction gearing, 5. valve opening detection device, 8. spool shaft.
Embodiment
For making those of ordinary skill in the art fully understand purpose of the present invention, feature and effect, now by following specific embodiment, and conjunction with figs., the present invention is described in detail.
Referring to Fig. 2.The present invention is made up of valve body 1, motor 2, speed reduction gearing 3, intelligence control circuit plate 4, valve opening detection device 5 and safety cover 6.Wherein motor 2, speed reduction gearing 3, intelligence control circuit plate 4, valve opening detection device 5 are sealed in the safety cover 6, and safety cover 6 and valve body 1 usefulness fixing bolt 7 combine.Wherein, be laid with a part, electric valve drive circuit 304, sensor access interface 305, sensor access interface 306 and the sensor access interface 307 of single-chip microcomputer 301 as control unit, communication interface 302, valve opening testing circuit 303 on the intelligence control circuit plate 4.Except single-chip microcomputer can be used as control unit, microprocessor, CPU etc. also can be used as control unit.Control unit is programmable.Valve opening detection device 5, electric valve drive circuit 304, motor 2, speed reduction gearing 3 have been formed electric valve jointly and have been driven monitoring cell 1102, referring to Figure 11.The present invention also can adopt step motor drive except can adopting the common motor driving.
The formation of intelligence control circuit as shown in Figure 3 on the intelligence control circuit plate 4: be made of single-chip microcomputer 301, communication interface 302, valve opening testing circuit 303, electric valve drive circuit 304, sensor access interface 305, sensor access interface 306 and sensor access interface 307, in this embodiment, control unit is taken on by single-chip microcomputer 301.Wherein, valve opening testing circuit 303 is parts of valve opening detection device 5.Light emitting diode 702 in the valve opening testing circuit 303, photosensitive double-triode valve 703 are not to be laid on the intelligence control circuit plate 4 but to be laid on the grid plate edge of valve opening detection device 5, referring to Fig. 7.
Single-chip microcomputer 301 as control unit adopts technical grade single-chip microcomputer STC89C516AD, built-in communication protocol program, sensor signal and data processor, valve control program, valve opening trace routine, timing program, and implement to communication interface 302, to valve opening testing circuit 303 and valve opening detection device 5, to electric valve drive circuit 304, to the monitoring and the control of sensor access interface 305,306,307.
Communication interface 302 circuit as shown in Figure 4, comprise among the figure single-chip microcomputer 301 as control unit (with STC89C516AD single-chip microcomputer 301 among Fig. 3 are same single-chip microcomputers.The single-chip microcomputer of indication all is meant single-chip microcomputer shown in Fig. 3 301 in the following stated and in the diagram), SJA100 CAN communication protocol specific chip 402, PCA82C00 transceiver special chip 403.Wherein A, B are the correspondence with foreign country connecting line, can be used as the use of communicating by letter with the upper control machine structure, also can be used as to connect intelligent instrument (as digital water meter etc.) or intelligent sensor (as digital flowmeter etc.) and use.When the single-chip microcomputer 301 as control unit has informational needs externally to send, this information is sent into SJA100 CAN communication protocol specific chip 402, after this information being changed according to the CAN communications protocol format by SJA100 CAN communication protocol specific chip 402, send on A, the B order wire by PCA82C00 transceiver special chip 403.When PCA82C00 transceiver special chip 403 is received the information that transmits on A, the B order wire, after this information sent into SJA100 CAN communication protocol specific chip 402 and carry out protocol conversion, send into single-chip microcomputer 301 as control unit.The new wound of the non-the present invention of this communication interface circuit institute, and widely applied, so no longer its detailed structure and detailed operation principle are narrated.Except above-mentioned communication interface, can also select MOD BUS communication interface, PROFIBUS communication interface, 485 communication interfaces, tcp/ip communication interface or other serial communication interfaces.
305 circuit as shown in Figure 5 for sensor interface (sensor access interface), comprise among the figure as circuit 502 in the single-chip microcomputer 301 of control unit and the frame of broken lines, figure middle connecting terminal "+", "-", " A " connect external sensor, voltage signal (or current signal) from sensor is through the filtering of RC eliminator, the buffer U buffering of R8 and C1 composition, send into the A/D conversion input port P1.0 as the single-chip microcomputer 301 of control unit, single-chip microcomputer 301 becomes data with this signal conversion.Wherein resistance R 0, R1, R2 and R8 form anti-adapter, can carry out 250 Ω, 500 Ω, 1K Ω and 10K Ω impedence matching to sensor; Resistance R 8 is formed signal attenuator with resistance R 3, R4, R5, can carry out 0,1/2,1/4,1/8 decay to the signal of sensor input.
The interface circuit of sensor interface 306 and sensor interface 307 is identical with sensor interface 305 circuit, is not repeated at this, and its signal is sent into the A/D conversion input port P1.1 and the P1.2 of single-chip microcomputer 301 respectively.
Valve opening detection device 5 is made up of spool shaft 8, grid dish 704, light emitting diode 702, photosensitive double-triode valve 703 and corresponding circuit as shown in Figure 7.Wherein, light emitting diode 702, photosensitive double-triode valve 703 and corresponding circuit have been formed valve opening testing circuit 303, referring to Fig. 6.The structure of grid dish 704 is shown in the AA ' sectional drawing among Fig. 7, and the grid plate edge has grid hole 706 and grid shelves 705.Valve opening detection device 5 can detect the aperture of valve together with wherein valve opening testing circuit 303.Valve opening testing circuit 303, as shown in Figure 6, comprise among the figure single-chip microcomputer 301 as control unit, light emitting diode 702 (with the light emitting diode 702 in the valve opening detection device 5 are same light emitting diodes) and photosensitive double-triode valve 703 (with the photosensitive double-triode valve 703 in the valve opening detection device 5 are same photosensitive double-triode valves) and peripheral resistance R 1, R2, R3 form, wherein light emitting diode 702 and photosensitive double-triode valve 703 are installed in grid dish 704 both sides shown in 702 among Fig. 7 and 703.Light emitting diode 702 and photosensitive double-triode valve 703 and peripheral resistance R 1, R2, R3 have formed valve opening testing circuit 303 jointly, referring to Fig. 6.Except light emitting diode 702 and photosensitive double-triode valve 703 are installed in grid dish 704 both sides, all the other electronic parts and components of valve opening testing circuit 303 are installed on the intelligence control circuit plate 4 usually.
The principle that valve opening detection device 5 and valve opening testing circuit 303 detect valve opening is: the light that light emitting diode 702 sends, the grid hole 706 of passing grid dish 704 is radiated on the photosensitive double-triode valve 703, two equal conductings of phototransistor in the photosensitive double-triode valve 703, the electric current of power supply VCC produces voltage on resistance R 1, R2, the voltage on R1, the R2 is sent into the P2.0 and the P2.1 port of single-chip microcomputer 301 respectively; When the spool shaft 8 of valve 1 drives the spool rotation, also driving simultaneously grid dish 704 rotates, rotation along with grid dish 704, the grid shelves 705 of grid dish can successively cover light emitting diode 702 and shine in the photosensitive double-triode valve 703 light on two phototransistors, the also corresponding priority of two phototransistors in the photosensitive double-triode valve 703 is ended, voltage on resistance R 1, the R2 also successively disappears, and the signal on the P2.0 of single-chip microcomputer 301 and the P2.1 port also successively disappears; Rotation along with grid dish 704, when next grid hole 706 moves to the position of light emitting diode 702 and photosensitive double-triode valve 703, two phototransistors can successively receive the light that light emitting diode 702 sends in the photosensitive double-triode valve 703, the electric current of power supply VCC also successively produces voltage again on resistance R 1, R2, the P2.0 of single-chip microcomputer 301 and P2.1 port also successively obtain signal again, and grid dish 704 turns over grid shelves at this moment.Along with spool shaft 8 drives the rotation that spools and grid dish do not stop, the grid hole of grid dish and grid shelves do not stop moves past light emitting diode and photosensitive double-triode valve, send into as the single-chip microcomputer 301 port P2.0 of control unit and the signal of P2.1 and also can ceaselessly change, pass through to detect the change frequency of signal on P2.0 and the P2.1 port as the single-chip microcomputer 301 of control unit, just can calculate the aperture of valve, because the variation of signal has sequencing on single-chip microcomputer 301P2.0 and the P2.1 port, so single-chip microcomputer 301 can be by detecting the sequencing that signal changes on P2.0 and the P2.1 port, differentiating valve is to open or close.
Electric valve drive circuit 304 is positioned on the intelligence control circuit plate 4; its structure as shown in Figure 8; comprise single-chip microcomputer 301, the buffer circuit 802 in the frame of broken lines, the detection protective circuit 803 in the frame of broken lines, the buffer circuit of photo coupler Q1～Q5 composition and the switching circuit that bidirectional triode thyristor BT1～BT5 forms among the figure as control unit; wherein, detect protective circuit 803 and also contain thermorelay FR.A phase, B phase, the C phase of A, B, the external threephase AC of C difference among the figure, A ', B ', C ' connect the motor of electric valve.The working principle of this circuit is: the single-chip microcomputer 301 as control unit is exported control signal from P2.3, the buffer circuit that this signal is formed through U1, U2, U3 and R1, R2, R3, after this signal cushioned reinforcement, drive photo coupler Q1, Q2, Q3 respectively, photo coupler Q1, Q2, Q3 drive bidirectional triode thyristor BT1, BT2, BT3 conducting respectively, bidirectional triode thyristor BT1, BT2, BT3 are respectively with A A ', B B ', C C ' connection, motor work; When motor need reverse, single-chip microcomputer 301 is from the P2.2 output signal, the buffer circuit that this signal is formed through U1, U4, U5 and R1, R4, R5, after this signal cushioned reinforcement, drive photo coupler Q1, Q4, Q5 respectively, photo coupler Q1, Q4, Q5 drive bidirectional triode thyristor BT1, BT4, BT5 conducting respectively, and bidirectional triode thyristor BT1, BT5, BT4 are respectively with A A ', B C ', C B ' connection, and motor reverses.The working principle of the detection protective circuit 803 in the frame of broken lines is: with the BT1 interlock circuit is example: when A A ' has alternating current (a.c.) to pass through; on D.C mutual-inductor T1, induce ac current signal; this current signal produces ac voltage signal on resistance R 11; the ac voltage signal that produces on the resistance R 11; after diode D7 rectification; again through R9; send into A/D convertor circuit port P1.3 after the bleeder circuit dividing potential drop that R10 forms as the single-chip microcomputer 301 of control unit; single-chip microcomputer 301 is by detecting the size that A/D convertor circuit port P1.3 goes up signal; judge whether the electric current that flows through A A ' is normal; as the electric current that flows through among the A A ' is undesired; output signal on single-chip microcomputer 301 cancellation P2.2 or the P2.3; bidirectional triode thyristor BT1 turn-offs, and A A ' no current passes through.Diode D1, D4 form cladding circuit in the circuit, prevent to cause because of the electric current that flows through A A ' is undesired through R9, R10 voltage after partial signal excessive, cause single-chip microcomputer 301 damages; Resistance R 8 is to be used for preventing that the electric current from signal after R9, the R10 dividing potential drop is excessive.The circuit working principle relevant with T2, T3 is identical therewith, is not repeated.When the electric current that flows through A A ', B B ', C C ' excessive and this circuit or single-chip microcomputer operation irregularity; the electric current that flows through A A ', BB ', C C ' can cause thermorelay FR to disconnect because of heating; and cut off the electric current that flows to A ', B ', C ' from A, B, C, thereby the protection motor can not be damaged.
Referring to Figure 11, basic functional principle of the present invention is: sensor passes through sensor access interface 305 with the parameter information of detected fluid, 306 or 307 send into the single-chip microcomputer 301 as control unit 1101, or by communication interface 302 operational parameter information is sent into single-chip microcomputer 301 as control unit 1101 as the remote operation office terminal of upper-position unit, single-chip microcomputer 301 is according to this information and the program finished in advance, automatically generate the control command of electric valve, and this order sent into electric valve drive circuit 304,2 work of electric valve drive circuit 304 drive motors, thereby motor 2 drives valve core rotation by 8 rotations of speed reduction gearing 3 drive spool shafts and realizes valve is carried out switching manipulation, single-chip microcomputer 301 as control unit 1101 detects valve opening in real time by valve opening testing circuit 303 and valve opening detection device 5 simultaneously, when the aperture of valve meets the requirements, single-chip microcomputer 301 sends order out of service, motor 2 is out of service, the operation of valve stop switch, exist when getting in touch in valving of the present invention and remote operation office terminal, single-chip microcomputer 301 as control unit 1101 also will in time feed back to the remote operation office terminal with serviceability by communication interface 302, if there are contact in valving of the present invention and intelligent instrument (as digital water meter or digital flowmeter etc.), also can status parameter in time be fed back to them by communication interface 302 as the single-chip microcomputer 301 of control unit 1101.Among the figure, valve opening detection device 5, electric valve drive circuit 304, motor 2, speed reduction gearing 3 have been formed electric valve jointly and have been driven monitoring cell 1102.
When the present invention and upper-position unit and communication network composition large-scale control system, fluid parameter data, valve opening testing circuit 303 and aperture detection device 5 detected valve opening data and other data that sensor can be arrived as the single-chip microcomputer 301 of control unit of the present invention are sent to upper-position unit by communication interface 302 of the present invention via the communication network of control system.When the communication interface 302 of single-chip microcomputer 301 of the present invention by valving of the present invention, when receiving the order from upper-position unit, single-chip microcomputer 301 can come the switching manipulation of control valve and carry out other orders by electric valve drive circuit 304, motor 2, speed reduction gearing 3.Control unit 1101 can be a single-chip microcomputer, also can be microprocessor or CPU.
Because the single-chip microcomputer as control unit is programmable, by changing the program of single-chip microcomputer, the present invention can have multiple function.
Application example one
As shown in Figure 9, in water system, uncertainty because of water consumption, usually cause water side hydraulic pressure shakiness, when the single-chip microcomputer 301 of the present invention 901 inside detects the variation of water side hydraulic pressure by pressure transducer 902, single-chip microcomputer 301 is automatically adjusted the aperture of valve by electric valve drive circuit 304, motor 2, speed reduction gearing 3, valve opening testing circuit 303 and valve opening detection device 5, thereby the water side hydraulic pressure is tended to be steady according to the program that weaves in advance.
Application example two
As shown in figure 10:,, form extensive collecting and distributing intelligent control system by communication network 1003 access operation office terminals 1001 by a plurality of the present invention 1002.The fluid parameter data that single-chip microcomputer 301 of the present invention can arrive sensor, valve opening testing circuit 303 and valve opening detection device 5 detected valve opening data and other data are sent to upper-position unit by communication interface 302 of the present invention via the communication network 1003 of control system.When single-chip microcomputer of the present invention 301 by communication interface 302, when receiving the order from upper-position unit, single-chip microcomputer 301 can come the switching manipulation of control valve and carry out other orders by electric valve drive circuit 304, motor 2, speed reduction gearing 3.
By the foregoing description as can be seen; the advantage of technical solution of the present invention and effect are tangible: simple in structure; gather multi-function in integral whole; and all devices of technical solution of the present invention; circuit all is installed in the safety cover that the valve body with electric valve device of the present invention combines; make electric valve device of the present invention become an intelligentized multifunctional motor-driven valving that independently has communication capacity; if utilize a plurality of electric valve devices of the present invention to form valve system, can show more that then its system architecture is simple in conjunction with upper-position unit; cost is low; reliably; the advantage that is easy to manage.
The above only is a better embodiment of the present invention, should be pointed out that for those skilled in the art, under the prerequisite that does not break away from the principle of the invention, can also make some changes, and these changes also should be considered as protection scope of the present invention.
Claims (6)
1. electric valve device; it is characterized in that; comprise: control unit, communication interface, electric valve drive monitoring cell; described control unit, described communication interface, described electric valve drive monitoring cell and all are installed in the safety cover that the valve body with electric valve device of the present invention combines, wherein:
Described control unit is the command and control center as electric valve device of the present invention, is used for described communication interface, described electric valve is driven monitoring cell, drives and monitor by the valve of described electric valve driving monitoring cell to electric valve device of the present invention;
Described communication interface is as the signal transmission passage between described control unit and the external environment condition, is used to receive the signal of outside input and this signal is passed to described control unit, and the signal that also is used for described control unit is transmitted sends to the outside;
Described electric valve drive monitoring cell be used to receive described control unit output be intended to control the signal of described valve and produce the switch motion of controlling described valve according to this signal, detect the aperture of described valve and give described control unit the gained feedback information.
2. electric valve device according to claim 1; it is characterized in that; also comprise the sensor access interface; be used to receive the signal that external sensor transmits and this signal is passed to described control unit; described control unit can receive signal that described sensor access interface transmitted and described sensor access interface is implemented monitoring and control, and described sensor access interface also is installed in the described safety cover.
3. electric valve device according to claim 1 is characterized in that, described communication interface is CAN BUS communication interface, MOD BUS communication interface, PROFIBUS communication interface, 485 communication interfaces, tcp/ip communication interface or other serial communication interfaces.
4. electric valve device according to claim 2 is characterized in that, described communication interface, the external sensor of current type that is output as of described sensor access interface are or/and the external sensor that is output as voltage type.
5. electric valve device according to claim 1 and 2 is characterized in that, described electric valve drives monitoring cell and comprises electric valve drive circuit, valve opening detection device, motor and speed reduction gearing, wherein:
Described electric valve drive circuit be used to receive described control unit output be intended to control the signal of described motor and produce the switch motion of controlling described motor according to this signal;
Described valve opening detection device is used to detect the aperture of described valve and gives described control unit with the gained feedback information;
Thereby described motor can be at described control unit and is realized by described speed reduction gearing that spool shaft to electric valve device of the present invention drives and controls under via the commander of described electric valve drive circuit control and realize described valve is driven and controls;
Described speed reduction gearing is used for sending the driving force that described motor is exported to described spool shaft.
6. electric valve device according to claim 1 and 2; it is characterized in that; described electric valve drive circuit comprises: the switching circuit that the buffer circuit that buffer circuit, detection protective circuit, several photo couplers are formed and several bidirectional triode thyristors are formed, wherein:
Described buffer circuit is used for the signal that described control unit transmits is cushioned reinforcement rear driving buffer circuit;
Described buffer circuit is used to receive controlling of described buffer circuit and drives described switching circuit;
Described switching circuit is used to receive controlling of described buffer circuit and operation that described motor is carried out open and close, just changes, reverses;
Described detection protective circuit is used to detect described operation of motor, and gives described control unit with the gained feedback information.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200610002762 CN1807949A (en) | 2006-01-25 | 2006-01-25 | Electric valve device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200610002762 CN1807949A (en) | 2006-01-25 | 2006-01-25 | Electric valve device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1807949A true CN1807949A (en) | 2006-07-26 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200610002762 Pending CN1807949A (en) | 2006-01-25 | 2006-01-25 | Electric valve device |
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| CN (1) | CN1807949A (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103047467A (en) * | 2012-12-13 | 2013-04-17 | 宁波恒富汽车部件发展有限公司 | Intelligent water valve |
| CN103256419A (en) * | 2013-04-16 | 2013-08-21 | 云南大学 | Non-oscillation high-sensitivity controller for ordinary electrically operated valve, and control method thereof |
| CN104405948A (en) * | 2014-09-12 | 2015-03-11 | 赵继鹏 | Self-control stop valve control box and valve body structure fixing and water leakage/water passing detection device |
| CN104678837A (en) * | 2014-11-28 | 2015-06-03 | 绍兴文理学院 | Intelligent exhaust valve control device |
| CN105042171A (en) * | 2015-05-27 | 2015-11-11 | 扬中市第一蝶阀厂有限公司 | Adjusting valve |
| CN105509831A (en) * | 2015-12-29 | 2016-04-20 | 成都兴联宜科技有限公司 | Photoelectric direct reading teletransmission smart IC card water meter valve drive circuit |
| CN110094576A (en) * | 2019-04-30 | 2019-08-06 | 北京国新建祥科技发展有限公司 | Flue motorized non-return valve |
| CN117970971A (en) * | 2024-04-01 | 2024-05-03 | 上海海维工业控制有限公司 | Valve port independent electric valve control method and system based on state identification |
-
2006
- 2006-01-25 CN CN 200610002762 patent/CN1807949A/en active Pending
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103047467A (en) * | 2012-12-13 | 2013-04-17 | 宁波恒富汽车部件发展有限公司 | Intelligent water valve |
| CN103047467B (en) * | 2012-12-13 | 2014-11-26 | 宁波恒富汽车部件发展有限公司 | Intelligent water valve |
| CN103256419A (en) * | 2013-04-16 | 2013-08-21 | 云南大学 | Non-oscillation high-sensitivity controller for ordinary electrically operated valve, and control method thereof |
| CN104405948A (en) * | 2014-09-12 | 2015-03-11 | 赵继鹏 | Self-control stop valve control box and valve body structure fixing and water leakage/water passing detection device |
| CN104678837A (en) * | 2014-11-28 | 2015-06-03 | 绍兴文理学院 | Intelligent exhaust valve control device |
| CN105042171A (en) * | 2015-05-27 | 2015-11-11 | 扬中市第一蝶阀厂有限公司 | Adjusting valve |
| CN105509831A (en) * | 2015-12-29 | 2016-04-20 | 成都兴联宜科技有限公司 | Photoelectric direct reading teletransmission smart IC card water meter valve drive circuit |
| CN110094576A (en) * | 2019-04-30 | 2019-08-06 | 北京国新建祥科技发展有限公司 | Flue motorized non-return valve |
| CN117970971A (en) * | 2024-04-01 | 2024-05-03 | 上海海维工业控制有限公司 | Valve port independent electric valve control method and system based on state identification |
| CN117970971B (en) * | 2024-04-01 | 2024-05-31 | 上海海维工业控制有限公司 | Valve port independent electric valve control method and system based on state identification |
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