CN101737377A - Online fault detector of hydraulic system - Google Patents
Online fault detector of hydraulic system Download PDFInfo
- Publication number
- CN101737377A CN101737377A CN200910248495A CN200910248495A CN101737377A CN 101737377 A CN101737377 A CN 101737377A CN 200910248495 A CN200910248495 A CN 200910248495A CN 200910248495 A CN200910248495 A CN 200910248495A CN 101737377 A CN101737377 A CN 101737377A
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- hydraulic system
- processing unit
- signal processing
- single chip
- chip microcomputer
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- 238000004891 communication Methods 0.000 claims abstract description 7
- 238000006243 chemical reaction Methods 0.000 claims description 2
- 238000001514 detection method Methods 0.000 abstract description 8
- 238000005259 measurement Methods 0.000 abstract description 2
- 239000010720 hydraulic oil Substances 0.000 description 3
- 239000004973 liquid crystal related substance Substances 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000004321 preservation Methods 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
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- Arrangements For Transmission Of Measured Signals (AREA)
Abstract
The invention provides an online fault detector of a hydraulic system, comprising a temperature sensor, a pressure sensor, a flow sensor, a signal processing unit, an A/D converter, a single chip and a clock communication interface. The online fault detector of the hydraulic system is characterized in that the pressure sensor, the temperature sensor and the flow sensor are connected with the signal processing unit, the signal processing unit is connected with the A/D converter; the A/D converter is connected with the single chip; a clock is connected with the single chip, and the single chip is connected with the communication interface. By adopting the single chip to carry out online fault detection on the hydraulic system, the invention improves the measurement precision of the flowmeter and the running stability of the hydraulic system and is convenient to observe the work state of the hydraulic system from a distance, so that the online detection of the hydraulic system is realized.
Description
Technical field
The present invention relates to a kind of detection device, particularly a kind of online fault detector of hydraulic system.
Background technique
At present, the detection of the hydraulic system in market mostly adopts the measuring instrument of separate unit to detect.Such as: the detection of pressure, temperature, flow; all select for use pressure, temperature, flow transducer to detect; three instrument are relatively independent separately; and the flow of system is relevant with temperature and pressure; so can not correctly reflect the working state of system; and error is bigger, easily causes system-down, but damage equipment when serious.
Summary of the invention
The present invention is directed to above-mentioned technical problem; adopt singlechip technology; comprehensively above-mentioned parameter is handled; the working state of display system, the parameter of each point is according to the size of temperature and pressure value; data on flows is compensated; when system running state goes wrong, can report to the police or shut down processing, thus the system of assurance proper functioning.
The object of the present invention is achieved like this: comprise temperature transducer, pressure transducer, flow transducer, signal processing unit, the A/D conversion, single-chip microcomputer, clock communication interface, it is characterized in that, pressure, temperature, flow transducer link to each other with signal processing unit, and signal processing unit links to each other with A/D converter again, and A/D converter links to each other with single-chip microcomputer again, clock links to each other with single-chip microcomputer, and communication interface links to each other with single-chip microcomputer.
Beneficial effect of the present invention: adopt single-chip microcomputer that hydraulic system is implemented online faut detection, according to pressure, temperature value flow parameter is carried out parametric compensation, improved the measuring accuracy of flowmeter greatly, and can be at the working state of hydraulic system, to dut temperature, pressure, flow value is set the upper and lower alarming value, improved the operational reliability of hydraulic system, by input, output module, the parameter of hydraulic system can be sent to upper-position unit and handle, be convenient to observe at a distance the working state of hydraulic system, thereby realize the online detection of hydraulic system.
Description of drawings
Fig. 1 is hydraulic system state-detection figure
Fig. 2 is the hydraulic system temperature measuring circuit
Fig. 3 is the interface circuit of Chip Microcomputer A/D transducer
Embodiment
Below in conjunction with accompanying drawing present embodiment is described further:
By Fig. 1-Fig. 3 as can be known, temperature transducer detects the temperature of the hydraulic oil of hydraulic system measured point, and pressure transducer detects the force value of the hydraulic oil of hydraulic system measured point, and flow transducer detects the flow value of the hydraulic oil of hydraulic system measured point.The signal of three groups of sensor is through signal processing unit, convert the standard signal of standard 4-20mA or 1-10V to, send into single-chip microcomputer through A/D converter again, single-chip microcomputer is handled the signal that collects, according to the temperature and pressure signal that collects flow parameter is compensated, show thereby obtain high-precision flow.
Clock circuit adopts DS1302, for system provide year, month, day, Sunday, the time minute, second, data link to each other with interface microcontroller.
Have warning circuit in the single-chip microcomputer, keyboard and liquid crystal display circuit.Liquid crystal display circuit can show the data of pressure, temperature, flow, four keys such as keyboard is provided with altogether and turns over, turns over down, determines, cancellation, with Liquid Crystal Module etc. separately or be used, finish the selection of determined parameter, the parameter upper and lower is set, work such as the preservation of parameter measurement data and transmission.
When warning circuit surpasses upper lower limit value in measured parameter, the warning of sounding.
Single-chip microcomputer utilizes RS-232 transmission and serial ports to communicate interface by input/output interface, thereby realizes point-to-pointly, and point can carry out communication with upper-position unit to the ventilation of system.
Claims (1)
1. an online fault detector of hydraulic system comprises temperature transducer, pressure transducer, flow transducer, signal processing unit, A/D conversion, single-chip microcomputer, the clock communication interface is characterized in that, pressure, temperature, flow transducer link to each other with signal processing unit, signal processing unit links to each other with A/D converter again, A/D converter links to each other with single-chip microcomputer again, and clock links to each other with single-chip microcomputer, and communication interface links to each other with single-chip microcomputer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910248495A CN101737377A (en) | 2009-12-17 | 2009-12-17 | Online fault detector of hydraulic system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910248495A CN101737377A (en) | 2009-12-17 | 2009-12-17 | Online fault detector of hydraulic system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101737377A true CN101737377A (en) | 2010-06-16 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200910248495A Pending CN101737377A (en) | 2009-12-17 | 2009-12-17 | Online fault detector of hydraulic system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101737377A (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101865181A (en) * | 2010-06-29 | 2010-10-20 | 中国传媒大学 | Hydraulic system automatic diagnosis system for stage drive application |
| CN102943790A (en) * | 2012-11-01 | 2013-02-27 | 徐州徐工液压件有限公司 | Intelligent hydraulic cylinder system |
| WO2013026209A1 (en) * | 2011-08-25 | 2013-02-28 | 长沙中联重工科技发展股份有限公司 | Method, controller and device for detecting hydraulic valve in hydraulic circuit, method and device for detecting hydraulic circuit fault， and fault processing system for hydraulic circuit |
| CN103033215A (en) * | 2011-09-29 | 2013-04-10 | 上海海洋大学 | Engineering machinery hydraulic system medium pollution diagnostic method based on digital signal processor (DSP) |
| CN103133458A (en) * | 2011-12-02 | 2013-06-05 | 浙江大学 | Internal leakage quantity detection device of hydraulic valves |
| CN103231989A (en) * | 2013-03-13 | 2013-08-07 | 中国矿业大学 | Real-time fault monitoring system and method for hoisting cooperative flexible cable parallel configuration equipment |
| CN103836025A (en) * | 2014-02-20 | 2014-06-04 | 吉林大学 | Rapid detection and fault acceleration compound system of hydraulic system |
| CN108716492A (en) * | 2018-07-26 | 2018-10-30 | 徐工集团工程机械有限公司 | Multifunctional vehicle accessory control system and multifunctional vehicle |
-
2009
- 2009-12-17 CN CN200910248495A patent/CN101737377A/en active Pending
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101865181A (en) * | 2010-06-29 | 2010-10-20 | 中国传媒大学 | Hydraulic system automatic diagnosis system for stage drive application |
| CN101865181B (en) * | 2010-06-29 | 2012-09-26 | 中国传媒大学 | Automatic diagnostic system of hydraulic system applied to stage driving |
| WO2013026209A1 (en) * | 2011-08-25 | 2013-02-28 | 长沙中联重工科技发展股份有限公司 | Method, controller and device for detecting hydraulic valve in hydraulic circuit, method and device for detecting hydraulic circuit fault， and fault processing system for hydraulic circuit |
| CN103033215A (en) * | 2011-09-29 | 2013-04-10 | 上海海洋大学 | Engineering machinery hydraulic system medium pollution diagnostic method based on digital signal processor (DSP) |
| CN103133458A (en) * | 2011-12-02 | 2013-06-05 | 浙江大学 | Internal leakage quantity detection device of hydraulic valves |
| CN103133458B (en) * | 2011-12-02 | 2016-06-22 | 浙江大学 | A kind of internal leakage detecting device of hydraulic valve |
| CN102943790A (en) * | 2012-11-01 | 2013-02-27 | 徐州徐工液压件有限公司 | Intelligent hydraulic cylinder system |
| CN103231989A (en) * | 2013-03-13 | 2013-08-07 | 中国矿业大学 | Real-time fault monitoring system and method for hoisting cooperative flexible cable parallel configuration equipment |
| CN103836025A (en) * | 2014-02-20 | 2014-06-04 | 吉林大学 | Rapid detection and fault acceleration compound system of hydraulic system |
| CN103836025B (en) * | 2014-02-20 | 2015-12-30 | 吉林大学 | Hydraulic system detects fast accelerates combined system with fault |
| CN108716492A (en) * | 2018-07-26 | 2018-10-30 | 徐工集团工程机械有限公司 | Multifunctional vehicle accessory control system and multifunctional vehicle |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20100616 |