CN106406395A - Gas sensor test system - Google Patents
Gas sensor test system Download PDFInfo
- Publication number
- CN106406395A CN106406395A CN201610744382.8A CN201610744382A CN106406395A CN 106406395 A CN106406395 A CN 106406395A CN 201610744382 A CN201610744382 A CN 201610744382A CN 106406395 A CN106406395 A CN 106406395A
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- CN
- China
- Prior art keywords
- air pressure
- test
- pressure
- gas sensor
- test system
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
- G05D27/00—Simultaneous control of variables covered by two or more of main groups G05D1/00 - G05D25/00
- G05D27/02—Simultaneous control of variables covered by two or more of main groups G05D1/00 - G05D25/00 characterised by the use of electric means
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F1/00—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L9/00—Measuring steady of quasi-steady pressure of fluid or fluent solid material by electric or magnetic pressure-sensitive elements; Transmitting or indicating the displacement of mechanical pressure-sensitive elements, used to measure the steady or quasi-steady pressure of a fluid or fluent solid material, by electric or magnetic means
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Engineering & Computer Science (AREA)
- Automation & Control Theory (AREA)
- Measuring Fluid Pressure (AREA)
Abstract
The invention discloses a gas sensor test system. The gas sensor test system comprises a test room, a controller, a vacuum pump, a pressure sensor and a servo valve, wherein the vacuum pump and the test room are communicated through a pipeline, the pipeline is equipped with the servo valve, the test room is internally equipped with the pressure sensor, the test room is internally stored with configured standard concentration test gas, the controller is used for controlling on and off of the servo value on the pipeline and start and stop of the vacuum pump, and the pressure sensor is used for detecting pressure of the test room and transmitting the detection information to the controller. The gas sensor test system is advantaged in that compression capability is improved, service life is prolonged, influence of error valve motion on pressure control is avoided, and pressure change of a controlled chamber is made to be more stable.
Description
Technical field
The present invention relates to the field of gas test is and in particular to a kind of test system of gas sensor.
Background technology
Aircraft in atmospheric environment in-flight, is directly affected by space air pressure environment, such as aircraft is in high-altitude
When, surrounding air pressure is negative pressure, but aircraft then bears malleation in face of the direction of speed.Controlled using pneumatic servo valve
The pressure model equipment of Technology design hardware-in-the-loop system, by spacecraft flying height HWIL simulation,
Real flight air pressure environment is introduced in aircraft development process, can effectively shorten the lead time, reduce development cost, disappear
Except product hidden danger it is ensured that flight stability controls.
But the control system of the pressure model of prior art is simultaneously connected with positive and negative potential source and positive pressure source using single control valve,
Thus realizing air pressure is simulated with the association regulation that chamber is filled, is evacuated.One direction single control valve controls two sources of the gas, and its response speed is relatively
Slowly, another aspect control valve is switched fast between pumping filling, and easily produces compression shock and concussion, thus switching causes to adjust by mistake
Section mistake.
Content of the invention
It is an object of the invention to provide a kind of test system of gas sensor, be can solve the problem that current using this system
Produce compression shock and concussion due to easy, thus switching causes to adjust the problem of mistake by mistake.For solving the above problems, the present invention
A kind of test system of gas sensor is proposed, this system includes as follows：
Test cabinet, controller, vacuum pump, pressure transducer, servo valve；Pass through pipeline between described vacuum pump and test cabinet
Connection, pipeline is provided with servo valve, described test interior is provided with pressure transducer, described test cabinet internal memory contains and configures
Normal concentration test gas；Described controller is used for the break-make of servo valve and the start and stop of vacuum pump in control pipeline；Described pressure
Force transducer is used for detecting the air pressure of test cabinet and sending described controller to.
Further, described controller also includes：Air pressure or the quality flow control device of vacuum degree control equipment, gas.
Further, described test interior also includes plural air pressure simulation chamber, and different air pressure simulate the air pressure of intracavity
Difference, each air pressure simulation intracavity is respectively provided with a pressure transducer.
Further, described air pressure simulation intracavity air pressure is negative pressure.
Further, described air pressure simulation intracavity air pressure change scope is 105kPa～109kPa.
Further, this system also includes digital to analog converter, and described digital to analog converter is connected to described pressure transducer and institute
State between controller, the analogue signal for exporting described pressure transducer is converted to digital signal.
Beneficial effect：Pressure, flow continually varying high accuracy control can be realized, accelerate speed, reduces cost, carry
High precision, keeps the control of flight stability, reduces impact and the concussion of pressure.
Brief description
Fig. 1 is a kind of schematic diagram of the test system of gas sensor of the present invention.
In figure 1：1st, test cabinet, 2, pressure transducer, 3, control room, 4, pipeline, 5, servo valve, 6, vacuum pump.
Specific embodiment
Below in conjunction with accompanying drawing, the principle of the present invention and feature are described, example is served only for explaining the present invention, and
Non- for limiting the scope of the present invention.
As shown in fig. 1, a kind of test system of gas sensor, this system includes as follows：
Test cabinet, controller, vacuum pump, pressure transducer, servo valve；Pass through pipeline between described vacuum pump and test cabinet
Connection, pipeline is provided with servo valve, described test interior is provided with pressure transducer, described test cabinet internal memory contains and configures
Normal concentration test gas；Described controller is used for the break-make of servo valve and the start and stop of vacuum pump in control pipeline；Described pressure
Force transducer is used for detecting the air pressure of test cabinet and sending described controller to.
Described controller also includes：Air pressure or the quality flow control device of vacuum degree control equipment, gas.
Described test interior also includes plural air pressure simulation chamber, and the air pressure that different air pressure simulate intracavity is different, often
Individual air pressure simulation intracavity is respectively provided with a pressure transducer.
Described air pressure simulation intracavity air pressure is negative pressure.
Described air pressure simulation intracavity air pressure change scope is 105kPa～109kPa.
This system also includes digital to analog converter, and described digital to analog converter is connected to described pressure transducer and described controller
Between, the analogue signal for exporting described pressure transducer is converted to digital signal.
Embodiment：The process nature that air pressure controls is the inflation/deflation process of closed vessel, adjusts and holds chamber air total amount, from
And adjust the air pressure in cavity volume.Digitial controller for the comparison of input instruction signal and sensor feedback pressure value, according to by mistake
Difference is controlled the gas pressure value in cavity volume by the control law setting by electric device, and exports to external sensor conduct
Control output signal, cavity volume air pressure reaches the target pressure value of command signal setting.Pressure, flow can be realized by the present invention
Continually varying high accuracy control, accelerates speed, reduces cost, improves precision, keeps the control of flight stability, reduces pressure
The impact of power and concussion.
In this manual, identical embodiment or example are necessarily directed to the schematic representation of above-mentioned term.
And, the specific features of description, structure, material or feature can be with suitable in any one or more embodiments or example
Mode combines.Additionally, in the case of not conflicting, those skilled in the art can be by the difference described in this specification
The feature of embodiment or example and different embodiment or example is combined and combines.
Although embodiments of the invention have been shown and described above it is to be understood that above-described embodiment is example
Property it is impossible to be interpreted as limitation of the present invention, those of ordinary skill in the art within the scope of the invention can be to above-mentioned
Embodiment is changed, changes, replacing and modification.
Claims (6)
1. a kind of test system of gas sensor is it is characterised in that this system includes test cabinet, controller, vacuum pump, pressure
Sensor, servo valve；Pass through pipeline communication between described vacuum pump and test cabinet, pipeline is provided with servo valve, described test
Indoor location has pressure transducer, and described test cabinet internal memory contains the normal concentration test gas having configured；Described controller is used
The start and stop of the break-make of servo valve and vacuum pump in control pipeline；Described pressure transducer is used for detecting the air pressure of test cabinet and passing
Give described controller.
2. a kind of test system of gas sensor according to claim 1 is it is characterised in that described controller also wraps
Include：Air pressure or the quality flow control device of vacuum degree control equipment, gas.
3. a kind of test system of gas sensor according to claim 1 is it is characterised in that described test interior is also wrapped
Include plural air pressure simulation chamber, the air pressure that different air pressure simulate intracavity is different, and each air pressure simulation intracavity is respectively provided with one
Pressure transducer.
4. a kind of test system of gas sensor according to claim 1 is it is characterised in that described air pressure simulates intracavity
Air pressure is negative pressure.
5. a kind of test system of gas sensor according to claim 4 is it is characterised in that described air pressure simulates intracavity
Air pressure change scope is 105kPa～109kPa.
6. according to claim 1 or 5 a kind of test system of gas sensor it is characterised in that this system also includes
Digital to analog converter, described digital to analog converter is connected between described pressure transducer and described controller, for by described pressure
The analogue signal of sensor output is converted to digital signal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610744382.8A CN106406395A (en) | 2016-08-28 | 2016-08-28 | Gas sensor test system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610744382.8A CN106406395A (en) | 2016-08-28 | 2016-08-28 | Gas sensor test system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106406395A true CN106406395A (en) | 2017-02-15 |
Family
ID=58003038
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610744382.8A Pending CN106406395A (en) | 2016-08-28 | 2016-08-28 | Gas sensor test system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106406395A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107608233A (en) * | 2017-09-12 | 2018-01-19 | 江西洪都航空工业集团有限责任公司 | High dynamic atmospheric environment simulation system and two loop control schemes |
| CN111983142A (en) * | 2020-07-28 | 2020-11-24 | 中国电子产品可靠性与环境试验研究所（（工业和信息化部电子第五研究所）（中国赛宝实验室）） | Testing device and method for atmosphere detection device |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0771991A (en) * | 1993-09-01 | 1995-03-17 | Tokyo Gas Co Ltd | Gas meter |
| CN102495110A (en) * | 2011-11-18 | 2012-06-13 | 南京工业大学 | Gas sensor test system |
| CN103558265A (en) * | 2013-10-29 | 2014-02-05 | 陕西高新实业有限公司 | Automatic testing system with gas sensitive element |
| CN105021777A (en) * | 2015-07-31 | 2015-11-04 | 湖北大学 | Multifunctional gas sensor testing system |
| CN105302003A (en) * | 2015-11-23 | 2016-02-03 | 华中科技大学 | Servo control system for simulating air pressure of aircraft |
-
2016
- 2016-08-28 CN CN201610744382.8A patent/CN106406395A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0771991A (en) * | 1993-09-01 | 1995-03-17 | Tokyo Gas Co Ltd | Gas meter |
| CN102495110A (en) * | 2011-11-18 | 2012-06-13 | 南京工业大学 | Gas sensor test system |
| CN103558265A (en) * | 2013-10-29 | 2014-02-05 | 陕西高新实业有限公司 | Automatic testing system with gas sensitive element |
| CN105021777A (en) * | 2015-07-31 | 2015-11-04 | 湖北大学 | Multifunctional gas sensor testing system |
| CN105302003A (en) * | 2015-11-23 | 2016-02-03 | 华中科技大学 | Servo control system for simulating air pressure of aircraft |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107608233A (en) * | 2017-09-12 | 2018-01-19 | 江西洪都航空工业集团有限责任公司 | High dynamic atmospheric environment simulation system and two loop control schemes |
| CN111983142A (en) * | 2020-07-28 | 2020-11-24 | 中国电子产品可靠性与环境试验研究所（（工业和信息化部电子第五研究所）（中国赛宝实验室）） | Testing device and method for atmosphere detection device |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20170215 |
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| RJ01 | Rejection of invention patent application after publication |