CN104154294A - Electric control device of intelligent digital flow valve - Google Patents
Electric control device of intelligent digital flow valve Download PDFInfo
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- CN104154294A CN104154294A CN201410379612.6A CN201410379612A CN104154294A CN 104154294 A CN104154294 A CN 104154294A CN 201410379612 A CN201410379612 A CN 201410379612A CN 104154294 A CN104154294 A CN 104154294A
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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
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66F—HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
- B66F9/00—Devices for lifting or lowering bulky or heavy goods for loading or unloading purposes
- B66F9/06—Devices for lifting or lowering bulky or heavy goods for loading or unloading purposes movable, with their loads, on wheels or the like, e.g. fork-lift trucks
- B66F9/075—Constructional features or details
- B66F9/20—Means for actuating or controlling masts, platforms, or forks
- B66F9/22—Hydraulic devices or systems
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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
- 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
- F16K37/0025—Electrical or magnetic means
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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
- 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
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Transportation (AREA)
- Structural Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Civil Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Electrically Driven Valve-Operating Means (AREA)
Abstract
The invention discloses an electric control device of an intelligent digital flow valve. The electric control device comprises a plurality of oil pressure sensors, a multi-channel signal input interface circuit, a multi-path analog-to-digital signal logic circuit, an intelligent logic unit circuit, a stabilized voltage supply and a motor driving circuit. The multi-channel signal input interface circuit, the multi-path analog-to-digital signal logic circuit, the intelligent logic unit circuit and the motor driving circuit are all connected with the stabilized voltage supply, all oil pressure sensors are connected with the multi-channel signal input interface circuit, and the oil pressure sensors transmit detected analog oil pressure signals to the multi-channel signal input interface circuit. The electric control device of the intelligent digital flow valve has the advantages that the structure is simple, performance is stable, anti-interference ability is high, and the electric control device can be suitable for environment temperature of 120 DEG C and meet control requirements for forklifts and other vehicles.
Description
Technical field
The present invention relates to a kind of electric controller of intelligent digital Flow valve, especially a kind of electric controller of the intelligent intelligent digital Flow valve for engineering machinery, special-purpose vehicle (fork truck).
Background technique
Put on display digital valve first in the international fluid dynamic fair of Shi Jie in 1981 since, have the history of 25 years, some R&D institutions of Japan, the U.S., Germany, Britain, Canada and the country such as Chinese are in succession studied and apply, have very great development, the company such as Sperry, Yickers of the picture U.S., Tokyo gauge company, You Yan company existing digit valve commodity are put on market.Digital valve is more late in Chinese use, but has also had the history of more than ten years, has also obtained very large achievement.But domestic electrohydraulic digital valve, after all still in the development stage, still has very large distance from batch production and popularization and application.
Summary of the invention
The present invention is the deficiency existing in above-mentioned prior art for avoiding, and a kind of electric controller of intelligent digital Flow valve is provided, and to solve, because excess Temperature causes, Flow valve rate of fault is high, the problem of poor reliability.
The present invention be technical solution problem by the following technical solutions.
The electric controller of intelligent digital Flow valve, its structural feature is to comprise multiple oil pressure sensors, multi channel signals input interface circuit, multi-channel analog revolution word signal logic circuit, intelligent logical element circuit, stabilized power supply and motor-drive circuit; Described multi channel signals input interface circuit, multi-channel analog revolution word signal logic circuit, intelligent logical element circuit are all connected with described stabilized power supply with motor-drive circuit, provide power supply by described stabilized power supply for described multi channel signals input interface circuit, multi-channel analog revolution word signal logic circuit, intelligent logical element circuit and motor-drive circuit; Each oil pressure sensor in described multiple oil pressure sensor is all connected with described multi channel signals input interface circuit, and the simulation fuel injection pressure signal detecting is transferred to described multi channel signals input interface circuit by oil pressure sensor;
Described multi channel signals input interface circuit is connected with described multi-channel analog revolution word signal logic circuit, and described multi-channel analog revolution word signal logic circuit is connected with described intelligent logical element circuit; Receive the simulation fuel injection pressure signal of oil pressure sensor transmission and be transferred to described multi-channel analog revolution word signal logic circuit by multi channel signals input interface circuit, after the simulation fuel injection pressure signal that described multi-channel analog revolution word signal logic circuit sends multi channel signals input interface circuit is converted to digital fuel injection pressure signal, sending to described intelligent logical element circuit;
Described intelligent logical element circuit receives the digital fuel injection pressure signal that described multi-channel analog revolution word signal logic circuit sends, and produce control logic according to described digital fuel injection pressure signal computing, and control logic is issued to motor-drive circuit, drive the stepper motor for control figure Flow valve by motor-drive circuit.
The structural feature of the electric controller of intelligent intelligent digital Flow valve of the present invention is also:
Described intelligent logical element circuit comprises intelligent controller U1; Described motor-drive circuit comprises that step motor control chip U2 and stepper motor drive chip U3;
Described stepper motor drives chip U3 to be connected with described intelligent controller U1 by described step motor control chip U2, and stepper motor drives chip U3 to be connected with the stepper motor of being controlled digital flow valves;
Capacitor C 1, resistance R 1 and resistance R 2 are all connected with described step motor control chip U2, and resistance R 3 all drives chip U3 to be connected with described stepper motor with resistance R 4.
Described intelligent controller U1 is single-chip microcomputer STC12C5A60S2.
Described step motor control chip U2 is stepper motor nonshared control unit L297.
It is motor drive ic L298N that described stepper motor drives chip U3.
Described digital flow valves comprises valve body, spool, valve pocket, Returnning spring, push rod, leading screw, nut and stepper motor; Described valve inner is provided with valve pocket, and described spool, valve pocket, Returnning spring, push rod, leading screw and nut are all arranged in described valve pocket; Described stepper motor is arranged at the right-hand member of described valve body, and the output terminal of described stepper motor is connected with described leading screw and drives described leading screw to rotate by described stepper motor; Described leading screw is positioned at the right-hand member of described valve pocket, and on leading screw, cover has described nut, is arranged with a nut sleeve on the outer circumferential face of described nut, and the left part of described nut sleeve and the right part of described push rod connect; The left part of described push rod and the right part of described spool connect; The left end of described spool is provided with described Returnning spring, and described Returnning spring is sheathed on the outer circumferential face of left part of described spool, and described valve pocket is sheathed on the outer circumferential face of described spool; The right-hand member of described valve body is provided with a capping, in described capping, is provided with liquid entering hole, is provided with a liquid outlet on described valve body; Described valve pocket is connected with described liquid entering hole and liquid outlet, and described liquid entering hole and described liquid outlet are connected with described valve pocket by feed pathway and liquid outlet channel respectively; Described spool is arranged between described feed pathway and described liquid outlet channel, controls the fluid flow size between feed pathway and described liquid outlet channel by the position of adjusting spool.
The output terminal of described stepper motor is connected with described leading screw by a coupling.
On the outer circumferential face of described push rod, be provided with tip-lever support.
Compared with the prior art, beneficial effect of the present invention is embodied in:
The lifting of the vehicles such as existing fork truck and roll control system all adopt solenoid valve to come oil pressure and the flow of regulating system, and the electric controller of intelligent digital Flow valve of the present invention has been released a kind of system of valve characteristic formula of the digital flow valves that adopts step motor control.The liftings of vehicle such as tradition fork truck and the solenoid valve of roll control system are due to the restriction of electromagnetic property, ambient temperature can not exceed 80 DEG C, and the ambient temperature of the engine compartment of the vehicles such as fork truck often exceedes 80 DEG C, the defect such as rate of fault is high, poor reliability that this has just caused in actual use.And digital flow valves can normally be worked in the ambient temperature below 120 DEG C.Rotated the position stopping by stepper motor, the on state of the each valve port of definition stepper valve.The electric controller of intelligent digital Flow valve of the present invention, have that simple in structure, stable performance, antijamming capability are strong, ambient temperature reaches 120 DEG C, can meet the control requirement of the vehicles such as fork truck, and can realize easily closed loop control, replace electro-hydraulic servo control valve device poor reliability, high in cost of production defect.
The electric controller of intelligent digital Flow valve of the present invention, has and can have simple in structure, stable performance, antijamming capability is strong, ambient temperature reaches 120 DEG C, can meet the advantage such as control requirement of the vehicles such as fork truck.
Brief description of the drawings
Fig. 1 is the structured flowchart of the electric controller of intelligent digital Flow valve of the present invention.
Fig. 2 is the circuit diagram of the intelligent logical element circuit of the electric controller of intelligent digital Flow valve of the present invention.
Fig. 3 is the plan view of digital flow valves of the present invention.
Fig. 4 is the A-A sectional view in Fig. 3.
In Fig. 1～Fig. 4, label is; 1 valve body, 2 spools, 3 valve pockets, 4 Returnning springs, 5 push rods, 6 leading screws, 7 nuts, 8 stepper motors, 9 valve pockets, 10 nut sleeve, 11 cappings, 12 feed pathway, 13 liquid outlet channels, 14 coupling, 15 tip-lever supports, 16 fixed covers.
Below pass through embodiment, and the invention will be further described by reference to the accompanying drawings.
Embodiment
Referring to accompanying drawing 1～accompanying drawing 4, the electric controller of intelligent digital Flow valve of the present invention, comprises multiple oil pressure sensors, multi channel signals input interface circuit, multi-channel analog revolution word signal logic circuit, intelligent logical element circuit, stabilized power supply and motor-drive circuit; Described multi channel signals input interface circuit, multi-channel analog revolution word signal logic circuit, intelligent logical element circuit are all connected with described stabilized power supply with motor-drive circuit, provide power supply by described stabilized power supply for described multi channel signals input interface circuit, multi-channel analog revolution word signal logic circuit, intelligent logical element circuit and motor-drive circuit; Each oil pressure sensor in described multiple oil pressure sensor is all connected with described multi channel signals input interface circuit, and the simulation fuel injection pressure signal detecting is transferred to described multi channel signals input interface circuit by oil pressure sensor;
Described multi channel signals input interface circuit is connected with described multi-channel analog revolution word signal logic circuit, and described multi-channel analog revolution word signal logic circuit is connected with described intelligent logical element circuit; Receive the simulation fuel injection pressure signal of oil pressure sensor transmission and be transferred to described multi-channel analog revolution word signal logic circuit by multi channel signals input interface circuit, after the simulation fuel injection pressure signal that described multi-channel analog revolution word signal logic circuit sends multi channel signals input interface circuit is converted to digital fuel injection pressure signal, sending to described intelligent logical element circuit;
Described intelligent logical element circuit receives the digital fuel injection pressure signal that described multi-channel analog revolution word signal logic circuit sends, and produce control logic according to described digital fuel injection pressure signal computing, and control logic is issued to motor-drive circuit, drive the stepper motor 8 for control figure Flow valve by motor-drive circuit.
Described intelligent logical element circuit comprises intelligent controller U1; Described motor-drive circuit comprises that step motor control chip U2 and stepper motor drive chip U3;
Described stepper motor drives chip U3 to be connected with described intelligent controller U1 by described step motor control chip U2, and stepper motor drives chip U3 to be connected with the stepper motor of being controlled digital flow valves;
Capacitor C 1, resistance R 1 and resistance R 2 are all connected with described step motor control chip U2, and resistance R 3 all drives chip U3 to be connected with described stepper motor with resistance R 4.
The preferred STC12C5A60S2 of intelligent controller U1.STC12C5A60S2 is the single-chip microcomputer of the single clock/machine cycle (1T) of STC production, is high speed, low power consumption, superpower jamproof 8051 single-chip microcomputers of new generation, the completely compatible tradition 8051 of instruction code, but the fast 8-12 of speed is doubly.Inner integrated MAX810 Special reset circuit, 2 road PWM, 8 road 10-bit high speed A/D conversions, for Electric Machine Control, strong jamming occasion.STC12C5A60S2 has following characteristics: 1), in the situation of same crystal oscillator, speed is common 51 8～12 times; 2) there is 10,8 tunnel AD; 3) many two timers, band PWM function; 4) there is SPI interface; 5) there is EEPROM; 6) there is 1K internal extended RAM; 7) there is WATCH_DOG; 8) many serial ports; 9) IO mouth can define, and has four kinds of states; 10) interrupt priority level has four kinds of state definables.
Motor-drive circuit is by the multifunctional circuit that drives control logic chip L297 and chip L298N to form.The I/O mouth output control pulse of single-chip microcomputer, processes through L297, L298N drive circuit paired pulses, the driving signal of output energy direct controlling and driving motor or stepper motor.
Step motor control chip U2 is L297.L297 is the stepper motor nonshared control unit that Italian SGS semiconductor company produces, it can produce 4 phase control signals, can be used for the bipolar and four phase single-phase stepper motors of computer-controlled two-phase, can be with single four clapping, two four clap, four phase eight beat mode control step motor.PWM chopper circuit in chip can regulate the electric current in the motor winding in stepper motor winding under switching mode.This intergrated circuit has adopted the I2L technology of the analog/digital compatibility of SGS company, uses the supply voltage of 5V, all the connection of signals all with TFL/CMOS or open-collector transistor compatibility.L297 chip is the Step-motor Control device with the dual inline type plastic-packaged of 20 pins.It can produce four and drive mutually signal, can drive the bipolar or four phase unipolar stepper motors of Single-chip Controlling two-phase by modes such as half step (eight clap) and full steps (four bats).The PWM chopper of this chip internal allows control step motor winding current under the pattern of pass, because phase sequential signal is also produced by inside, therefore it only needs clock, direction and the mode input signal just can control step motor, can alleviate the burden of microprocessor and programming.
It is L298N that stepper motor drives chip U3.L298N is that a kind of high voltage, the large-current electric machine that ST company produces drives chip.This chip adopts 15 pin encapsulation.Main feature is: operating voltage is high, and maximum operating voltage can reach 46V; Output current is large, and instantaneous peak current can reach 3A, and continuous firing electric current is 2A; The high-voltage large current full-bridge type driver that includes two H bridges, can be used for driving the inductive load such as direct current motor and stepping motor, relay coil; Adopt the control of standard logic level signal; There are two and enable control end, in the situation that not affected by input signal, allow or forbid that device work has a logic power input end, works internal logic circuit part under low voltage; Can external detection resistance, variable quantity is fed back to control circuit.Use L298N chip drives motor, this chip can drive two two-phase electric machines, also can drive four phase motors, can directly carry out regulation output voltage by power supply; And can directly provide signal with the I/O mouth of single-chip microcomputer, circuit is simple, uses more convenient.
Described intelligent controller U1 is single-chip microcomputer STC12C5A60S2.
Described step motor control chip U2 is stepper motor nonshared control unit L297.
It is motor drive ic L298N that described stepper motor drives chip U3.
Described digital flow valves comprises valve body 1, spool 2, valve pocket 3, Returnning spring 4, push rod 5, leading screw 6, nut 7 and stepper motor 8; Described valve body 1 inside is provided with valve pocket 9, and described spool 2, valve pocket 3, Returnning spring 4, push rod 5, leading screw 6 and nut 7 are all arranged in described valve pocket 9; Described stepper motor 8 is arranged at the right-hand member of described valve body 1, and the output terminal of described stepper motor 8 is connected with described leading screw 6 and drives described leading screw 6 to rotate by described stepper motor 8; Described leading screw 6 is positioned at the right-hand member of described valve pocket 9, and on leading screw 6, cover has described nut 7, is arranged with a nut sleeve 10 on the outer circumferential face of described nut 7, and the right part of the left part of described nut sleeve 10 and described push rod 5 connects; The right part of the left part of described push rod 5 and described spool 2 connects; The left end of described spool 2 is provided with described Returnning spring 4, and described Returnning spring 4 is sheathed on the outer circumferential face of left part of described spool 2, and described valve pocket 3 is sheathed on the outer circumferential face of described spool 2; The right-hand member of described valve body 1 is provided with a capping 11, in described capping 11, is provided with liquid entering hole, is provided with a liquid outlet on described valve body 1; Described valve pocket 9 is connected with described liquid entering hole and liquid outlet, and described liquid entering hole and described liquid outlet are connected with described valve pocket 9 by feed pathway 12 and liquid outlet channel 13 respectively; Described spool 2 is arranged between described feed pathway 12 and described liquid outlet channel 13, controls the fluid flow size between feed pathway 12 and described liquid outlet channel 13 by the position of adjusting spool 2.The digital flow valves of electric controller of the present invention, in the time that needs are adjusted uninterrupted, only needs to start stepper motor.While reducing flow, drive described leading screw to rotate by stepper motor, leading screw is positioned at nut axially the moving linearly along described leading screw in leading screw periphery left while rotation, and then promotion nut sleeve rectilinear movement, nut sleeve promotes described push rod motion, and then drive valve core movement, thereby control the gap length between feed pathway and liquid outlet channel, and then realize the object of the uninterrupted between liquid entering hole and liquid outlet.The digital flow valves of electric controller of the present invention, the control that realizes uninterrupted by stepper motor, not only control accuracy is high, and the de-magnetization point of the magnetic material that uses of stepper motor is all more than 130 DEG C, have even up to more than 200 DEG C, so stepper motor appearance temperature 80～90 DEG C completely normal, while having avoided adopting the Flow valve of electromagnetic system to exceed 80～90 DEG C due to temperature, have that rate of fault is high, the problem of poor reliability.Need to increase flow time, stepper motor rotates backward, and under the effect of the Returnning spring of spool, moves right, and the gap between feed pathway and liquid outlet channel is increased, thus augmented flow.
The output terminal of described stepper motor 8 is connected with described leading screw 6 by a coupling 14.
On the outer circumferential face of described push rod 5, be provided with tip-lever support 15.By the fixing described push rod of described tip-lever support, described tip-lever support is sheathed on the outer circumferential face of described push rod, and the two ends, left and right of push rod all stretch out in outside described tip-lever support, push rod can be in described tip-lever support left and right linear slide.The right-hand member of push rod and described nut sleeve connect, and the left end of push rod withstands on described spool.A groove has been established in the right part of described spool, and the left end of described push rod is stuck in described groove just, can mutually not depart from making between described push rod and described spool.Between described tip-lever support 15 and described stepper motor 8, be provided with a fixed cover 16; Described leading screw 6, nut 7 and nut sleeve 10 are all arranged in the inner chamber of described fixed cover 16.Described fixed cover is as the transition apparatus between stepper motor and described valve body, within the parts such as screw pair and coupling that are made up of described leading screw and described nut are all positioned at described fixed cover.Between described fixed cover and described tip-lever support, be fixed by screws on described valve body.The right-hand member of tip-lever support stretches out in outside the valve pocket of valve body, within the left end of tip-lever support stretches to described valve pocket.
The electric controller of intelligent digital Flow valve of the present invention, by various sensors, much information is transported to multi-channel analog revolution word signal logic circuit through multi channel signals input interface circuit, numerical information after conversion is sent into computer intelligence Logical processing unit circuit, here compare through logical process and control strategy judgement, control information is transported to control logic unit, and then remove the stepper motor of control figure Flow valve through motor-drive circuit, to finally reach the object of controlling uninterrupted.
Power supply unit is intelligent switch power source module, has overcurrent protection, can automatically adapt to input voltage wide swings.
The lifting of the vehicles such as existing fork truck and roll control system all adopt solenoid valve to carry out the flow of regulating system, and the electric controller of intelligent digital Flow valve of the present invention has been released a kind of system of valve characteristic formula of the digital flow valves that adopts step motor control.In concrete fork truck control procedure, can adopt multiple digital flow valves to realize respectively the control action such as lifting, inclination of the vehicles such as fork truck.When can realizing multiple stepper motor, described intelligent controller U1 controls.Only need a set of motor-drive circuit by driving control logic chip L297 and chip L298N to form be set again to each stepper motor, motor-drive circuit is connected between intelligent controller U1 and controlled stepper motor and can realizes the flow control of digital flow valves, and then realize the control of the exercises such as fork truck lifting and inclination.
The liftings of vehicle such as tradition fork truck and the solenoid valve of roll control system are due to the restriction of electromagnetic property, ambient temperature can not exceed 80 DEG C, and the ambient temperature of the engine compartment of the vehicles such as fork truck often exceedes 80 DEG C, the defect such as rate of fault is high, poor reliability that this has just caused in actual use.And digital flow valves can normally be worked in the ambient temperature below 120 DEG C.Rotated the position stopping by stepper motor, the on state of the each valve port of definition stepper valve.The electric controller of intelligent digital Flow valve of the present invention, have that simple in structure, stable performance, antijamming capability are strong, ambient temperature reaches 120 DEG C, can meet the control requirement of the vehicles such as fork truck, and can realize easily closed loop control, replace electro-hydraulic servo control valve device poor reliability, high in cost of production defect.
When specific works, in the time of operator's mobile operating handle, the Hall transducer of handle inside detects the action (tilt operation of Joystick, lift operation, suddenly stop meta), operation signal is sent to intelligent controller U1, by intelligent controller U1, control signal is sent to two stepper motor driving circuits, driven for controlling and the inclination digital flow valves of lifting and the stepper motor of lifting digital flow valves by two stepper motor driving circuits, thereby control the turnover oil mass of two digital flow valves, to hydraulic tilt cylinder, lifting hydraulic cylinder carries out tilt operation and elevating control.Inclination digital flow valves, lifting digital flow valves are all connected with described intelligent controller U1, are detected the action of inclination digital flow valves, lifting digital flow valves by intelligent controller U1.
As illustrated in fig. 1 and 2, the electric controller of digital flow valve system comprises imported oil pressure transducer, outlet oil pressure power sensor, multi channel signals input interface circuit, multi-channel analog revolution word signal logic circuit, intelligent logical processing unit circuit, stabilized power supply and stepper motor driving circuit; Multi channel signals input interface circuit, multi-channel analog revolution word signal logic circuit, intelligent logical element circuit are all connected with stabilized power supply with motor-drive circuit; Oil pressure sensor is all connected with multi channel signals input interface circuit; Multi channel signals input interface circuit is connected with multi-channel analog revolution word signal logic circuit, and multi-channel analog revolution word signal logic circuit is connected with intelligent logical element circuit; Motor-drive circuit comprises stepper motor driving circuit A and stepper motor driving circuit B.Intelligent logical processing unit stops meta signal, handle tilt control inputs, the input of handle elevating control, import 1 pressure, outlet 1 pressure, import 2 pressure, outlet 2 pressure signals according to the urgency of forklift operator personnel's operating grip, by stepper motor driving circuit A, stepper motor driving circuit B control step motor A, stepper motor B respectively; By various sensors, much information is transported to multi-channel analog revolution word signal logic circuit through multi channel signals input interface circuit, numerical information after conversion is sent into computer intelligence Logical processing unit circuit, here compare through logical process and control strategy judgement, control information is transported to control logic unit, and then removes to control Driving Stepping Motor through overdrive circuit.
Power supply unit is intelligent switch power source module, has overcurrent protection, can automatically adapt to input voltage wide swings.
More than show and described basic principle of the present invention, major character and advantage of the present invention.The technician of the industry should understand; the present invention is not restricted to the described embodiments; what in above-described embodiment and specification, describe is principle of the present invention; the present invention also has various changes and modifications without departing from the spirit and scope of the present invention, and these changes and improvements all fall in claimed scope of the present invention.The protection domain that the present invention requires is defined by appending claims and equivalent thereof.
Claims (8)
1. the electric controller of intelligent digital Flow valve, is characterized in that, comprises multiple oil pressure sensors, multi channel signals input interface circuit, multi-channel analog revolution word signal logic circuit, intelligent logical element circuit, stabilized power supply and motor-drive circuit; Described multi channel signals input interface circuit, multi-channel analog revolution word signal logic circuit, intelligent logical element circuit are all connected with described stabilized power supply with motor-drive circuit, provide power supply by described stabilized power supply for described multi channel signals input interface circuit, multi-channel analog revolution word signal logic circuit, intelligent logical element circuit and motor-drive circuit; Each oil pressure sensor in described multiple oil pressure sensor is all connected with described multi channel signals input interface circuit, and the simulation fuel injection pressure signal detecting is transferred to described multi channel signals input interface circuit by oil pressure sensor;
Described multi channel signals input interface circuit is connected with described multi-channel analog revolution word signal logic circuit, and described multi-channel analog revolution word signal logic circuit is connected with described intelligent logical element circuit; Receive the simulation fuel injection pressure signal of oil pressure sensor transmission and be transferred to described multi-channel analog revolution word signal logic circuit by multi channel signals input interface circuit, after the simulation fuel injection pressure signal that described multi-channel analog revolution word signal logic circuit sends multi channel signals input interface circuit is converted to digital fuel injection pressure signal, sending to described intelligent logical element circuit.
Described intelligent logical element circuit receives the digital fuel injection pressure signal that described multi-channel analog revolution word signal logic circuit sends, and produce control logic according to described digital fuel injection pressure signal computing, and control logic is issued to motor-drive circuit, drive the stepper motor (8) for control figure Flow valve by motor-drive circuit.
2. the electric controller of intelligent intelligent digital Flow valve according to claim 1, is characterized in that, described intelligent logical element circuit comprises intelligent controller U1; Described motor-drive circuit comprises that step motor control chip U2 and stepper motor drive chip U3;
Described stepper motor drives chip U3 to be connected with described intelligent controller U1 by described step motor control chip U2, and stepper motor drives chip U3 to be connected with the stepper motor of being controlled digital flow valves;
Capacitor C 1, resistance R 1 and resistance R 2 are all connected with described step motor control chip U2, and resistance R 3 all drives chip U3 to be connected with described stepper motor with resistance R 4.
3. according to the electric controller of the intelligent intelligent digital Flow valve described in claim 1 and 2, it is characterized in that, described intelligent controller U1 is single-chip microcomputer STC12C5A60S2.
4. the electric controller of intelligent intelligent digital Flow valve according to claim 1, is characterized in that, described step motor control chip U2 is stepper motor nonshared control unit L297.
5. the electric controller of intelligent intelligent digital Flow valve according to claim 1, is characterized in that, it is motor drive ic L298N that described stepper motor drives chip U3.
6. the electric controller of intelligent intelligent digital Flow valve according to claim 1, it is characterized in that, described digital flow valves comprises valve body (1), spool (2), valve pocket (3), Returnning spring (4), push rod (5), leading screw (6), nut (7) and stepper motor (8); Described valve body (1) inside is provided with valve pocket (9), and described spool (2), valve pocket (3), Returnning spring (4), push rod (5), leading screw (6) and nut (7) are all arranged in described valve pocket (9); Described stepper motor (8) is arranged at the right-hand member of described valve body (1), and the output terminal of described stepper motor (8) is connected with described leading screw (6) and drive described leading screw (6) to rotate by described stepper motor (8); Described leading screw (6) is positioned at the right-hand member of described valve pocket (9), the upper cover of leading screw (6) has described nut (7), on the outer circumferential face of described nut (7), be arranged with a nut sleeve (10), the right part of the left part of described nut sleeve (10) and described push rod (5) connects; The right part of the left part of described push rod (5) and described spool (2) connects; The left end of described spool (2) is provided with described Returnning spring (4), and described Returnning spring (4) is sheathed on the outer circumferential face of left part of described spool (2), and described valve pocket (3) is sheathed on the outer circumferential face of described spool (2); The right-hand member of described valve body (1) is provided with a capping (11), and described capping is provided with liquid entering hole on (11), is provided with a liquid outlet on described valve body (1); Described valve pocket (9) is connected with described liquid entering hole and liquid outlet, and described liquid entering hole and described liquid outlet are connected with described valve pocket (9) by feed pathway (12) and liquid outlet channel (13) respectively; Described spool (2) is arranged between described feed pathway (12) and described liquid outlet channel (13), controls the fluid flow size between feed pathway (12) and described liquid outlet channel (13) by the position of adjusting spool (2).
7. the electric controller of intelligent digital Flow valve according to claim 1, is characterized in that, the output terminal of described stepper motor (8) is connected with described leading screw (6) by a coupling (14).
8. the electric controller of intelligent intelligent digital Flow valve according to claim 1, is characterized in that, is provided with tip-lever support (15) on the outer circumferential face of described straight push rod (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410379612.6A CN104154294A (en) | 2014-08-04 | 2014-08-04 | Electric control device of intelligent digital flow valve |
Applications Claiming Priority (1)
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| CN104633234A (en) * | 2015-02-15 | 2015-05-20 | 山东科技大学 | Electromagnetic exchange valve with automatic time counting function and working method of electromagnetic exchange valve |
| CN106286950A (en) * | 2016-08-25 | 2017-01-04 | 宁波新思创机电科技股份有限公司 | A kind of electromagnetic valve with auto-control function |
| CN107605834A (en) * | 2017-08-09 | 2018-01-19 | 太原理工大学 | A kind of voltage stabilizing feed liquid method for adapting to hydraulic support action |
| CN110030422A (en) * | 2019-03-26 | 2019-07-19 | 北京星际荣耀空间科技有限公司 | Flow regulator and adjusting method |
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| CN104633234A (en) * | 2015-02-15 | 2015-05-20 | 山东科技大学 | Electromagnetic exchange valve with automatic time counting function and working method of electromagnetic exchange valve |
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| CN106286950A (en) * | 2016-08-25 | 2017-01-04 | 宁波新思创机电科技股份有限公司 | A kind of electromagnetic valve with auto-control function |
| CN107605834A (en) * | 2017-08-09 | 2018-01-19 | 太原理工大学 | A kind of voltage stabilizing feed liquid method for adapting to hydraulic support action |
| CN107605834B (en) * | 2017-08-09 | 2019-02-22 | 太原理工大学 | A kind of pressure stabilizing feed liquid method adapting to hydraulic support movement |
| CN110030422A (en) * | 2019-03-26 | 2019-07-19 | 北京星际荣耀空间科技有限公司 | Flow regulator and adjusting method |
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