CN105545881A - Intelligence based hydraulic control system - Google Patents
Intelligence based hydraulic control system Download PDFInfo
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- CN105545881A CN105545881A CN201510877878.8A CN201510877878A CN105545881A CN 105545881 A CN105545881 A CN 105545881A CN 201510877878 A CN201510877878 A CN 201510877878A CN 105545881 A CN105545881 A CN 105545881A
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- drive circuit
- chip microcomputer
- hydraulic control
- control system
- relay
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Abstract
The invention relates to an intelligence based hydraulic control system, namely an intelligent hydraulic control system based on single chip application; new methods such as single chip control, signal acquisition, optocoupler relay control, overvoltage protection and the like are applied to the field of prestressed tension control, specifically relating to the industrial fields such as automatic control, hydraulic control and the like. A single chip is designed inside the intelligent hydraulic control system; the single chip is connected with an optocoupler drive circuit that is connected with an optocoupler relay; the optocoupler relay is connected with an accessible six-way electromagnetic reversing valve; an operating circuit of the electromagnetic valve is connected in series with a protection relay; the single chip is used for controlling the optocoupler drive circuit, the optocoupler relay and the accessible six-way electromagnetic reversing valve; a drive circuit and a wireless communication module both connected with the single chip are designed inside the system; the wireless communication module is used for communication transmission between the single chip and a computer.
Description
Technical field
The present invention relates to a kind of based on intelligent hydraulic control system; it is the intelligent hydraulic control system based on single chip application; the new methods such as Single-chip Controlling, signals collecting, light coupling relay control, overvoltage protection are applied to strain-pull controlling of prestress field, are specifically related to the industry fields such as automatic control, hydraulic control.
Background technique
Hydraulic system because of transmission force large, be easy to transmit and configuration, be widely used in industry, civilian industry, the prestress tensioning equipment of hydraulics is wherein used to be widely used in bridge, at a high speed, the construction fields such as railway, along with maturation and the development of hydraulic system technology, executive component in current hydraulic system is except traditional manual control valve, have also appeared the control valve relying on electromagnetism to drive, the direction to adjusting medium in control system can be realized, flow, the control of speed and other parameter, its control accuracy compares hand control valve with flexibility some superiority, therefore solenoid directional control valve is widely used in hydraulic control system.
At present, the control mode of solenoid directional control valve is mainly contained to hand switch controls, PLC controls two kinds of modes.It is by controlling to realize to the performance loop break-make of electromagnetic coil, generally occurring with the form of touch switch that hand switch controls cardinal principle.And in traditional prestressed stretch-draw field, by manually dynamic direction of operating Vavle switching direction, manual measurement steel strand tension length, stretching force and stretch-draw length that prestress wire bears cannot be monitored in real time, measuring accuracy is not enough.
PLC control mode is common a kind of mode in current automatic control system, and its main operational principle is by programming to PLC, and controller, according to different order-driven mechanical relay, is controlled electromagnetic coil by mechanical relay.
Tradition two kinds of current Application comparison of mode are extensive, but also there is following deficiency:
First, manual control mode, although structure is simple, cost is low, cannot realize automatic control, needs to rely on operator to carry out Non-follow control.
Secondly, PLC control technology relative maturity, but due to its control port be mechanical relay, its speed of response, reliability, working life Shortcomings.In addition, PLC maintenance difficulties, cost are relatively high.
In sum, the aspects such as automatic control, working life, maintenance difficulties have some limitations, and are difficult to meet current requirement.
Summary of the invention
The technical problem to be solved in the present invention is just following 3 points: (1) uses conventional microcontroller to realize automatic control function, judges, regulating system pressure by pressure transducer, displacement transducer data analysis.(2) computer remote automatic control function can be realized.(3) light coupling relay is used to substitute existing machinery formula relay driving mode.(4) system has over-voltage protecting function.
In order to solve the problems of the technologies described above, the present invention adopts following technological scheme:
A kind of based on intelligent hydraulic control system, its indoor design has single-chip microcomputer, and single-chip microcomputer is connected with optocoupler drive circuit, and optocoupler drive circuit is connected with light coupling relay, light coupling relay is connected with accessible No. six solenoid directional control valves, and electromagnetic valve work circuit in series has protective relay;
Single-chip microcomputer, for controlling optocoupler drive circuit, light coupling relay, can be accessed by No. six solenoid directional control valves;
This internal system is designed with the drive circuit, the wireless communication module that are connected with single-chip microcomputer; Wireless communication module is used for the communications of single-chip microcomputer and computer.
It includes the signal isolator, the displacement transducer that are connected with single-chip microcomputer; Signal isolator is connected with pressure transducer, pressure transducer Bonding pressure Displaying Meter, and pressure display instrument table is connected with protective relay by exporting control signal.Native system, by the information gathering to pressure transducer, displacement transducer, judgement, can realize the Intelligent adjustment of pressure.
Drive circuit is RS485 drive circuit.
Line communication module is 433MHz wireless communication module.
Single-chip microcomputer is MSP430 single-chip microcomputer.
The present invention has multiple overvoltage automatic protection functions, and to improve security of system performance, electromagnetic valve work circuit in series has protective relay; when pressure exceedes alarming value; Displaying Meter exports control signal, and protective relay switches to open circuit by normally closed, Self-shut electromagnetic valve.
The present invention by RS485 bus, 433MHz is wireless, and two kinds of modes carry out telecontrol by computer, it is characterized in that: indoor design has RS485 drive circuit, 433MHz wireless communication module is used for the communications of single-chip microcomputer and computer.
There is the MSP430 microcontroller of 16 the present invention inside as master controller, and the analog-digital converter input end of the signal such as pressure transducer, displacement transducer and single-chip microcomputer is carried out information gathering, according to single-chip microcomputer to the contrast of pressure, displacement data, judgement, calculate corresponding instruction, and by its port, driving function to electromagnetic coil realizes to the control of light coupling relay.For improving system reliability, sensor signal is isolated through signal isolator.
Present invention achieves the job control of six way solenoid valves, its implementation is: according to the electrical parameter such as operating voltage, operating current of electromagnetic coil, have selected the AQV252G light coupling relay that PANASONIC is produced, the control overflow that electrically can meet the electromagnetic coil of 24V, 40W of its working end.Select the reason of light coupling relay to be light coupling relay to be control controllable silicon by Internal photoemission device, to be a kind of non-contact type power switch, there is the advantages such as life-span long, noise is low, reliable operation.
Because one-chip machine port driving current is less, cannot Direct driver light coupling relay, therefore this control indoor design has 6 roadbeds in the light coupling relay drive circuit of FDV301N field effect transistor.Drive light coupling relay by Single-chip Controlling field effect transistor, achieve the function of full isolation, fast driving.
Realizing the circuit design of computer to the function of controller telecontrol is: the isolated RS485 drive circuit of Controller gain variations one, computer order transmits by RS485 bus, pass through command adapted thereto, its port low and high level of Single-chip Controlling, thus realize computer long-distance control function.Simultaneously for improving practicability, system is also designed with 433MHz wireless communication module, can realize controlled in wireless.
Because the active force produced when hydraulic system uses is large, once there is overload, certain danger can be there is, therefore in the present invention, add overvoltage protection design.Its working principle is, there is overvoltage output control function pressure display instrument table inside, and its inside has a group relay normal state to be normally off, and once occur overvoltage, relay exports as often to open.Apply this characteristic, can by the performance loop of this group relay series connection access solenoid valve, when there is overvoltage, relay disconnects automatically, now solenoid valve power-off, and pressure cannot continue to increase, thus plays protective function.
In sum; the present invention is by the control of microcontroller; built-in signal Acquisition Circuit, overvoltage crowbar, light coupling relay drive circuit, electromagnetic switch valve controling circuit, isolated RS485 drive circuit; electromagnetic valve function can be realized, and controlled by RS485 bus or wireless transmission method.And the single-chip microcomputer used, light coupling relay are conventional device, the feature that design difficulty is controlled, hardware cost is low, solve the problem that traditional approach reliability is low, automaticity is low, compensate for the deficiency of traditional approach.
Accompanying drawing explanation
Fig. 1 is structured flowchart of the present invention;
Fig. 2 is light coupling relay drive circuit schematic diagram of the present invention;
Fig. 3 is isolated RS485 drive circuit schematic diagram of the present invention;
Fig. 4 is system overvoltage of the present invention protection wiring diagram schematic diagram;
Fig. 5 is system port distribution map of the present invention.
Embodiment
Describe the present invention below in conjunction with accompanying drawing 1 ~ 5:
A kind of based on intelligent hydraulic control system, its indoor design has single-chip microcomputer 6, and single-chip microcomputer 6 is connected with optocoupler drive circuit 7, and optocoupler drive circuit 7 is connected with light coupling relay 10, light coupling relay 10 is connected with accessible No. six solenoid directional control valves 12, and electromagnetic valve work circuit in series has protective relay 11;
Single-chip microcomputer 6, for controlling optocoupler drive circuit 7, light coupling relay 10, can be accessed by No. six solenoid directional control valves 12;
This internal system is designed with the drive circuit 8, the wireless communication module 9 that are connected with single-chip microcomputer 6; Wireless communication module 9 is for the communications of single-chip microcomputer and computer.
It includes the signal isolator 5, the displacement transducer 3 that are connected with single-chip microcomputer 6; Signal isolator 5 is connected with pressure transducer 1, pressure transducer 1 Bonding pressure Displaying Meter 4, and pressure display instrument table 4 is connected with protective relay 11 by exporting control signal 2.
Drive circuit 8 is RS485 drive circuit.
Line communication module 9 is 433MHz wireless communication module.
Single-chip microcomputer 6 is MSP430 single-chip microcomputer.
Power supply used in the present invention is DC24V 5A, prohibits the use the power supply of other voltages to carry out work, to prevent controller because of excessive pressure damages during use.By six way solenoid valve access controllers, and port number marks.Controller RS485 datawire is connected with computer, after systems inspection is errorless, switches on power.
Open computer controlled system, be numbered according to port numbering and solenoid valve function, such as oiling valve, scavenger valve etc., so that visual control.
After configuring, user can directly by the telecontrol of computer to solenoid valve.
Claims (5)
1. one kind based on intelligent hydraulic control system, it is characterized in that: its indoor design has single-chip microcomputer (6), single-chip microcomputer (6) is connected with optocoupler drive circuit (7), optocoupler drive circuit (7) is connected with light coupling relay (10), light coupling relay (10) is connected with accessible No. six solenoid directional control valves (12), and electromagnetic valve work circuit in series has protective relay (11);
Single-chip microcomputer (6), for controlling optocoupler drive circuit (7), light coupling relay (10), can be accessed by No. six solenoid directional control valves (12);
This internal system is designed with the drive circuit (8), the wireless communication module (9) that are connected with single-chip microcomputer (6); Wireless communication module (9) is for the communications of single-chip microcomputer and computer.
2. according to claim 1 based on intelligent hydraulic control system, it is characterized in that: it includes the signal isolator (5), the displacement transducer (3) that are connected with single-chip microcomputer (6); Signal isolator (5) is connected with pressure transducer (1), pressure transducer (1) Bonding pressure Displaying Meter (4), and pressure display instrument table (4) is connected with protective relay (11) by exporting control signal (2).
3. according to claim 1 based on intelligent hydraulic control system, it is characterized in that: drive circuit (8) is RS485 drive circuit.
4. according to claim 1 based on intelligent hydraulic control system, it is characterized in that: line communication module (9) is 433MHz wireless communication module.
5. according to claim 1 based on intelligent hydraulic control system, it is characterized in that: single-chip microcomputer (6) is MSP430 single-chip microcomputer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510877878.8A CN105545881A (en) | 2015-12-04 | 2015-12-04 | Intelligence based hydraulic control system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510877878.8A CN105545881A (en) | 2015-12-04 | 2015-12-04 | Intelligence based hydraulic control system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105545881A true CN105545881A (en) | 2016-05-04 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510877878.8A Pending CN105545881A (en) | 2015-12-04 | 2015-12-04 | Intelligence based hydraulic control system |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2201651A (en) * | 1936-10-31 | 1940-05-21 | Western Electric Co | Dial switching telephone system |
| US2580768A (en) * | 1947-08-14 | 1952-01-01 | Ibm | Data look-up apparatus for computing or other machines |
| CN101907896A (en) * | 2010-08-03 | 2010-12-08 | 温州大学 | Multifunctional intelligent combined flow measuring and controlling instrument |
| CN104007681A (en) * | 2013-02-26 | 2014-08-27 | 湖北港源电气有限公司 | Pneumatic riveted digital control system for producing touch switches |
| CN205244023U (en) * | 2015-12-04 | 2016-05-18 | 江西飞尚科技有限公司 | Based on intelligent hydraulic control system |
-
2015
- 2015-12-04 CN CN201510877878.8A patent/CN105545881A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2201651A (en) * | 1936-10-31 | 1940-05-21 | Western Electric Co | Dial switching telephone system |
| US2580768A (en) * | 1947-08-14 | 1952-01-01 | Ibm | Data look-up apparatus for computing or other machines |
| CN101907896A (en) * | 2010-08-03 | 2010-12-08 | 温州大学 | Multifunctional intelligent combined flow measuring and controlling instrument |
| CN104007681A (en) * | 2013-02-26 | 2014-08-27 | 湖北港源电气有限公司 | Pneumatic riveted digital control system for producing touch switches |
| CN205244023U (en) * | 2015-12-04 | 2016-05-18 | 江西飞尚科技有限公司 | Based on intelligent hydraulic control system |
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Application publication date: 20160504 |