CN104180848A - Online detection device for portable hydraulic system - Google Patents
Online detection device for portable hydraulic system Download PDFInfo
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- CN104180848A CN104180848A CN201310191030.0A CN201310191030A CN104180848A CN 104180848 A CN104180848 A CN 104180848A CN 201310191030 A CN201310191030 A CN 201310191030A CN 104180848 A CN104180848 A CN 104180848A
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Abstract
The invention discloses an online detection device for a portable hydraulic system, which comprises a power supply circuit, a temperature sensor, a pressure sensor, a flow sensor, an A/D conversion circuit and a control chip, wherein the power supply circuit is respectively connected with the temperature sensor, the pressure sensor, the flow sensor, the A/D conversion circuit and the control chip; the temperature sensor is connected with the A/D conversion circuit via a signal conditioning circuit; the pressure sensor is connected with the A/D conversion circuit via a first filter circuit; the flow sensor is connected with the A/D conversion circuit via a second filter circuit; and the A/D conversion circuit is connected with the control chip. The online detection device for the portable hydraulic system has the advantages that the detection precision is high, performance is good, and online detection demands on parameters such as temperature, pressure, and flow can be met.
Description
Technical field
The present invention relates to hydraulic system technical field, be specifically related to a kind of portable liquid pressing system on-line measuring device.
Background technology
The important performance characteristic of reactant liquor pressing system is: flow Q, pressure P, temperature T.
For a long time, the performance parameter detection type of hydraulic system is similar to the black box problem of a sealing, and people can not observe directly the fluid parameter of hydraulic system.Hydraulic tester is exactly such device: by flow, pressure, temperature sensor to hydraulic system carry out data acquisition, through signal condition, after A/D conversion, show its flow, pressure, Temperature numerical.
Hydraulic tester divides dynamic test and static test.
Summary of the invention
The present invention has overcome the deficiencies in the prior art, and the good portable liquid pressing system of a kind of detection effect on-line measuring device is provided.
Consider the problems referred to above of prior art, according to an aspect of the present invention, for solving above-mentioned technical matters, the present invention by the following technical solutions:
A kind of portable liquid pressing system on-line measuring device, comprise power circuit, temperature sensor, pressure transducer, flow sensor, A/D change-over circuit and control chip, described power circuit respectively with described temperature sensor, pressure transducer, flow sensor, A/D change-over circuit is connected with control chip, described temperature sensor is connected with described A/D change-over circuit by signal conditioning circuit, described pressure transducer is connected with described A/D change-over circuit by the first filtering circuit, described flow sensor is connected with described A/D change-over circuit by the second filtering circuit, described A/D change-over circuit is connected with described control chip.
In order to realize better the present invention, further technical scheme is:
According to one embodiment of present invention, described control chip is AT89C52.
According to one embodiment of present invention, also comprise clock module, described clock module is connected with described control chip.
According to one embodiment of present invention, also comprise LCM, described LCM is connected with described control chip.
According to one embodiment of present invention, also comprise host computer, described host computer is connected with described control chip.
According to one embodiment of present invention, described host computer is connected with described control chip by RS232 interface.
According to one embodiment of present invention, also comprise keyboard, described keyboard is connected with described control chip.
The present invention can also be:
According to one embodiment of present invention, also comprise warning circuit, described warning circuit is connected with described control chip.
Compared with prior art, one of beneficial effect of the present invention is:
Portable liquid pressing system on-line measuring device of the present invention, has accuracy of detection high, functional, can meet the parameters such as temperature, pressure, flow are carried out to the online requirement detecting.
Accompanying drawing explanation
For clearer explanation present specification embodiment or technical scheme of the prior art, to the accompanying drawing of required use in the description of embodiment or prior art be briefly described below, apparently, the accompanying drawing the following describes is only the reference to some embodiment in present specification, for those skilled in the art, in the situation that not paying creative work, can also obtain according to these accompanying drawings other accompanying drawing.
Fig. 1 shows the principle schematic of portable liquid pressing system on-line measuring device according to an embodiment of the invention.
Wherein, the corresponding name of the Reference numeral in accompanying drawing is called:
101-power circuit, 102-temperature sensor, 103-pressure transducer, 104-flow sensor, 105-A/D change-over circuit, 106-control chip, 107-signal conditioning circuit, 108-the first filtering circuit, 109-the second filtering circuit, 110-clock module, 111-control chip, 112-host computer, 113-keyboard, 114-warning circuit.
Embodiment
Below in conjunction with embodiment, the present invention is described in further detail, but embodiments of the present invention are not limited to this.
Fig. 1 shows the principle schematic of portable liquid pressing system on-line measuring device according to an embodiment of the invention.A kind of portable liquid pressing system on-line measuring device as shown in Figure 1, comprise power circuit 101, temperature sensor 102, pressure transducer 103, flow sensor 104, A/D change-over circuit 105 and control chip 106, described power circuit 101 respectively with described temperature sensor 102, pressure transducer 103, flow sensor 104, A/D change-over circuit 105 is connected with control chip 106, described temperature sensor 102 is connected with described A/D change-over circuit 105 by signal conditioning circuit 107, described pressure transducer 103 is connected with described A/D change-over circuit 105 by the first filtering circuit 108, described flow sensor 104 is connected with described A/D change-over circuit 105 by the second filtering circuit 109, described A/D change-over circuit 105 is connected with described control chip 106.
Described control chip 106 is AT89C52.
Also comprise clock module 110, described clock module 110 is connected with described control chip 106.
Also comprise LCM(LCD MODULE), described LCM is connected with described control chip 111.
Also comprise host computer 112, described host computer 112 is connected with described control chip 106.Described host computer 112 is connected with described control chip 106 by RS232 interface.
Also comprise keyboard 113, described keyboard 113 is connected with described control chip 106.
Also comprise warning circuit 114, described warning circuit 114 is connected with described control chip 106.
The temperature of place, hydraulic system measured point hydraulic oil during temperature sensor 102 testing.This detector adopts integrated temperature sensor AD590.AD590 is a kind of novel two ends formula constant current device, and its driving voltage can be from+4V to+30V; Its working temperature is-55 ℃～+ 150 ℃, and sensitivity is 1 μ A/K, meets the thermometric needs of hydraulic system completely.AD590 output be electric current, be easy to transmit with wire, can not produce large error because of line drop or induced noise voltage.Because hydraulic fluid temperature can only be as the auxiliary detection amount in hydraulically operated equipment (HOE) detection, the measurement of hydraulic fluid temperature is not needed to too high precision, can AD590 be fixed on and need the point of thermometric and do suitable temperature compensation with heat insulation fixture, thereby measure the temperature of intraluminal fluid force feed.
Pressure transducer 103:
General hydraulic system is designed with tensimeter at key position self, or leaves pressure detection interface.To the detection mouth place setting pressure sensor 103 of pressing force measurement to leave in hydraulic system self.Consider the accuracy requirement to pressure transducer 103, pressure transducer 103 operating voltage should be consistent with system voltage, and supply current is little.The present embodiment detector adopts MSP series stainless steel sensor, and its electric property is as follows: power supply: 5VDC; Supply current: <10mA; Output signal: 0.5～4.5VDC/4～20mADC; Range deviation: 2%FS.
Flow sensor 104:
Traditional flow rate of hydraulic system measurement instrument, if vortex shedding flow meter, turbo flow meter etc. is contact instrument mostly, the necessary dismounting original system parts of the installation of this type of instrument, and easily to system, bring new fault, be unsuitable for the online detection of data on flows.The present embodiment detector adopts U.S. health and happiness wound 1010N/X series clamp-on ultrasonic gas mete, need not disassembly system pipeline, adopt clamp-mounting type to install, transmitting probe and receiving transducer are fixed on to place, measured point, obtain the output being directly proportional to flow, can realize non-cpntact measurement and online detection.
The hydraulic system on-line detector that above embodiment introduces can be applicable to the online detection of Large Hydraulic System.Facts have proved that its accuracy of detection is high, functional, can meet the parameters such as temperature, pressure, flow are carried out to the online requirement detecting.
In this instructions, each embodiment adopts the mode of going forward one by one to describe, and each embodiment stresses is the difference with other embodiment, identical similar part cross-references between each embodiment.
Although with reference to a plurality of explanatory embodiment of the present invention, invention has been described here, but, should be appreciated that, those skilled in the art can design a lot of other modification and embodiments, and these are revised and within embodiment will drop on the disclosed principle scope and spirit of the application.
Claims (8)
1. a portable liquid pressing system on-line measuring device, it is characterized in that, comprise power circuit, temperature sensor, pressure transducer, flow sensor, A/D change-over circuit and control chip, described power circuit respectively with described temperature sensor, pressure transducer, flow sensor, A/D change-over circuit is connected with control chip, described temperature sensor is connected with described A/D change-over circuit by signal conditioning circuit, described pressure transducer is connected with described A/D change-over circuit by the first filtering circuit, described flow sensor is connected with described A/D change-over circuit by the second filtering circuit, described A/D change-over circuit is connected with described control chip.
2. portable liquid pressing system on-line measuring device according to claim 1, is characterized in that, described control chip is AT89C52.
3. portable liquid pressing system on-line measuring device according to claim 1, is characterized in that, also comprises clock module, and described clock module is connected with described control chip.
4. portable liquid pressing system on-line measuring device according to claim 1, is characterized in that, also comprises LCM, and described LCM is connected with described control chip.
5. portable liquid pressing system on-line measuring device according to claim 1, is characterized in that, also comprises host computer, and described host computer is connected with described control chip.
6. portable liquid pressing system on-line measuring device according to claim 5, is characterized in that, described host computer is connected with described control chip by RS232 interface.
7. portable liquid pressing system on-line measuring device according to claim 1, is characterized in that, also comprises keyboard, and described keyboard is connected with described control chip.
8. portable liquid pressing system on-line measuring device according to claim 1, is characterized in that, also comprises warning circuit, and described warning circuit is connected with described control chip.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310191030.0A CN104180848A (en) | 2013-05-22 | 2013-05-22 | Online detection device for portable hydraulic system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310191030.0A CN104180848A (en) | 2013-05-22 | 2013-05-22 | Online detection device for portable hydraulic system |
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| Publication Number | Publication Date |
|---|---|
| CN104180848A true CN104180848A (en) | 2014-12-03 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310191030.0A Pending CN104180848A (en) | 2013-05-22 | 2013-05-22 | Online detection device for portable hydraulic system |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107966180A (en) * | 2017-12-14 | 2018-04-27 | 陕西昆仑机械装备制造有限责任公司 | Mobile hydraulic system pressure flow monitoring car |
| CN109707700A (en) * | 2019-01-29 | 2019-05-03 | 石家庄市科恒电子有限公司 | A kind of intelligent detecting method and device of Portable engineering Weapon Hydraulic System |
| CN110567616A (en) * | 2019-08-29 | 2019-12-13 | 北京自动化控制设备研究所 | Signal acquisition circuit for silicon piezoresistive pressure sensor unit |
-
2013
- 2013-05-22 CN CN201310191030.0A patent/CN104180848A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107966180A (en) * | 2017-12-14 | 2018-04-27 | 陕西昆仑机械装备制造有限责任公司 | Mobile hydraulic system pressure flow monitoring car |
| CN109707700A (en) * | 2019-01-29 | 2019-05-03 | 石家庄市科恒电子有限公司 | A kind of intelligent detecting method and device of Portable engineering Weapon Hydraulic System |
| CN110567616A (en) * | 2019-08-29 | 2019-12-13 | 北京自动化控制设备研究所 | Signal acquisition circuit for silicon piezoresistive pressure sensor unit |
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| C06 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20141203 |
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| WD01 | Invention patent application deemed withdrawn after publication |