CN85104740A - Hydraulic dynamic testing system used for pressure sensor - Google Patents
Hydraulic dynamic testing system used for pressure sensor Download PDFInfo
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- CN85104740A CN85104740A CN 85104740 CN85104740A CN85104740A CN 85104740 A CN85104740 A CN 85104740A CN 85104740 CN85104740 CN 85104740 CN 85104740 A CN85104740 A CN 85104740A CN 85104740 A CN85104740 A CN 85104740A
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- pressure
- pressure transducer
- pressure sensor
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Abstract
The present invention is a kind of metering testing system, is used for the pressure transducer dynamic perfromance is tested.This system's method therefor and principle are novel and have an initiative.Test pressure is with regulated at will in several kilograms to several thousand kilograms pressure limits, and only several square metres of system's floor areas are easy to mounting or dismounting, carry.Investing for a short time, only is about 1/10 of shock tube method, and single pressure transducer testing expense only is about 1/200～1/500 of a shock tube method.Safe and reliable in the use.Owing to adopted some measures, the measuring accuracy height more demonstrates the superiority of this system under the big test pressure.
Description
A kind of hydraulic dynamic testing system used for pressure sensor of setting up on the new principle basis belongs to the metrology and measurement class
The purpose of invention:
Use a kind of new principle to obtain test of pulse pressure, set up an experimental pressure can be in several kilograms to several thousand kilograms pressure limits regulated at will, equipment capital investment is little, experimental expenses is low, only 2～3 square metres of floor areas, be easy to that mounting or dismounting are easy to carry, Data Processing in Experiment fast (in a few minutes can in the on-the-spot dynamic perfromance that obtain tested pressure transducer of experiment), a logarithm pressure transducer carries out the novel dynamic test system of pressure transducer of dynamic test simultaneously on an equipment.
Summary of the invention:
The present invention is used for the pressure transducer dynamic test, because it is different with existing method that the obtaining of pumping signal is based on, require experimental pressure height not only safety but also the difficulty that is difficult to overcome that has aspect such as certain precision to exist in the present pressure dynamic test so solved.
The cardinal principle of this invention is that commercial power is risen to tens thousand of volts, by rectification to low electrification capacity charge, and sparking electrode placed in the dielectric fluid, electric energy is discharged suddenly, thereby produce the pressure pulse of an approximate δ function, as driving source, come the dynamic perfromance of gaging pressure sensor with this.Can obtain amplitude spectrum, transport function, logarithm magnitude-phase characteristics of pressure transducer etc. by routine package.
Hydraulic dynamic testing system used for pressure sensor is made up of following main several parts, is respectively described below:
(1) heavy impulse current device:
Come down to a charge-discharge circuit, purpose is to obtain energy and low-inductive capacitor is charged from electrical network, utilizes it to provide power for experimental signal.
Control desk for improving the stability of sparking voltage, has sparking voltage that switch is set on the control platform except discharge and recharge and igniting etc. controlled, and voltage surpasses or when being lower than the required value margin tolerance, firing circuit is protected automatically, and discharge can not be carried out.The directly control knob of lifting pressure sensor experiment stand also is housed on control desk in addition.
(2) arc chamber and experiment table:
This is the place that forms pressure pulse and carry out the product experiment, according to calculation requirement, can distribute several pressure transducers are installed, to improve conventional efficient on experimental stand.In order to improve measuring accuracy, must eliminate the influence of wave reflection and interference, for this reason, take the wave absorption facility the arc chamber planted agent, metal frame should be made into the wedge shape structure with certain angle meeting the ripple direction.Should design a reflex housing in addition, the reflex housing curved surface should calculate through strict, has a specular dead like this in arc chamber, and pressure transducer and electrode are placed in the blind area.
In addition, in order to obtain the dynamic model of comparatively accurate tested pressure transducer, can a precision height, the wide pressure transducer more than 5～10 times of the tested pressure transducer of duty-cycle be installed with tested pressure transducer equivalent position.Its output signal is imported computing machine with tested pressure transducer output signal, to ask for the digital model of tested pressure transducer.
For the stability that guarantees to discharge, there is the rapid-mounted metal to ignite the device of silk between two discharge electrodes, can guarantee that metal is ignited the each length of silk and rate of tension is approaching.
(3) data processor bag
Test all kinds of pressure transducer dynamic perfromances with hydraulic dynamic testing system used for pressure sensor, begin only to need time a few minutes to obtaining experimental result from experiment.Data processing can off line also can be carried out at the scene, laboratory.Can obtain the amplitude spectrum curve of tested pressure transducer, transport function, logarithm amplitude/phase characteristic curves.
(4) advance and economic analysis
Pressure transducer is carried out dynamic test both at home and abroad at present, shock tube method in vogue, but experimental pressure has only tens kilograms of pressure to hundreds of kilogram pressure.Single testing expense of pressure transducer needs hundreds of unit to several thousand yuan.Set up the shock tube equipment of a cover experimental pressure at 1000 kilograms of pressure, capital investment is estimated to want about 1,000,000 yuan.Shock tube is because due to the principle, pressure is higher, and the degree of confidence of experimental result is just lower.Safety problem also is difficult for solving.Other method as drop hammer, gunpowder explosion, high-speed switch etc., experimental pressure can be accomplished bigger, but desire is tried the pressure transducer dynamic perfromance of high frequency range and is had any problem, the precision that mainly is test result is difficult for reaching, and the domestic and international at present dynamic characteristic test to the high frequency range pressure transducer of big pressure still has difficulties.Its method of hydraulic dynamic testing system used for pressure sensor and principle and existing shock tube, drop hammer etc. different, so overcome the problem and the difficulty that in the pressure transducer dynamic test, exist at present.Can obtain experimental pressure with hydraulic dynamic testing system used for pressure sensor is 5000 kilograms to 10000 kilograms pressure.Equipment capital investment only is about 1/10 of shock tube method.Single pressure transducer testing expense only is about 1/200～1/500 of a shock tube method.Pressure transducer frequency range 5,000,000 all can be tested with interior.
Each ingredient title in the Figure of description
The heavy impulse current device, 2. arc chamber and experiment table, 3. ignite silk, 4. electrode, 5. pressure transducer, 6. dielectric fluid, 7. plastic of adsorbing wave and reflex housing, 8. data acquisition and disposal system.
Claims (3)
1, a kind of hydraulic dynamic testing system used for pressure sensor of forming by heavy impulse current device, arc chamber and experiment table and data processor bag, it is characterized in that charging to electric capacity with high voltage, electric energy is put suddenly in dielectric liquid and is released, produce pressure pulse, with this input stimulus, the dynamic perfromance of coming the gaging pressure sensor as pressure transducer;
2, arc chamber inner reflecting cover curve form in the test macro as claimed in claim 1 and wedge shape structure reach the influence of eliminating wave reflection and interference;
3, test macro as claimed in claim 1 is a method of setting up tested pressure transducer transport function with two pressure transducers, and can carry out dynamic test to many pressure transducers.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN85104740A CN85104740B (en) | 1985-06-24 | 1985-06-24 | Hydraulic dynamic testing system used for pressure sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN85104740A CN85104740B (en) | 1985-06-24 | 1985-06-24 | Hydraulic dynamic testing system used for pressure sensor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN85104740A true CN85104740A (en) | 1987-01-07 |
| CN85104740B CN85104740B (en) | 1988-06-08 |
Family
ID=4794027
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN85104740A Expired CN85104740B (en) | 1985-06-24 | 1985-06-24 | Hydraulic dynamic testing system used for pressure sensor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN85104740B (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102519663A (en) * | 2011-12-08 | 2012-06-27 | 武汉理工大学 | Polymer film optical fiber F-P cavity-based underwater shock pressure sensor and dynamic calibration experiment system thereof |
| CN105547582A (en) * | 2015-12-03 | 2016-05-04 | 中国航空工业集团公司北京长城计量测试技术研究所 | Portable pulse stress generator |
| CN106441694A (en) * | 2016-10-10 | 2017-02-22 | 海南大学 | Fluid pressure sensor |
| CN106525331A (en) * | 2016-11-25 | 2017-03-22 | 中国人民解放军61489部队 | Pen type free field pressure sensor calibration device |
| CN107843438A (en) * | 2016-09-20 | 2018-03-27 | 福特全球技术公司 | vehicle impact test |
-
1985
- 1985-06-24 CN CN85104740A patent/CN85104740B/en not_active Expired
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102519663A (en) * | 2011-12-08 | 2012-06-27 | 武汉理工大学 | Polymer film optical fiber F-P cavity-based underwater shock pressure sensor and dynamic calibration experiment system thereof |
| CN102519663B (en) * | 2011-12-08 | 2013-10-02 | 武汉理工大学 | Polymer film optical fiber F-P cavity-based underwater shock pressure sensor and dynamic calibration experiment system thereof |
| CN105547582A (en) * | 2015-12-03 | 2016-05-04 | 中国航空工业集团公司北京长城计量测试技术研究所 | Portable pulse stress generator |
| CN107843438A (en) * | 2016-09-20 | 2018-03-27 | 福特全球技术公司 | vehicle impact test |
| CN106441694A (en) * | 2016-10-10 | 2017-02-22 | 海南大学 | Fluid pressure sensor |
| CN106525331A (en) * | 2016-11-25 | 2017-03-22 | 中国人民解放军61489部队 | Pen type free field pressure sensor calibration device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN85104740B (en) | 1988-06-08 |
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