CN1007458B - The tension, pressure and weighting transducers dynamic test system - Google Patents
The tension, pressure and weighting transducers dynamic test systemInfo
- Publication number
- CN1007458B CN1007458B CN 85108333 CN85108333A CN1007458B CN 1007458 B CN1007458 B CN 1007458B CN 85108333 CN85108333 CN 85108333 CN 85108333 A CN85108333 A CN 85108333A CN 1007458 B CN1007458 B CN 1007458B
- Authority
- CN
- China
- Prior art keywords
- pressure
- dynamic test
- load cells
- draw
- gathering
- 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.)
- Expired
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- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
The present invention is a kind of metering testing system, be used for to draw, pressure and LOAD CELLS carry out dynamic test.The cardinal principle of this invention is that commercial power is risen to tens thousand of volts, by rectification to low electrification condenser charge, place the electrode of dielectric fluid, in moment, the whole electric energy on it are discharged suddenly, by the pressure gathering-device, make the pressure of approximate δ function convert the power that is similar to the δ function to, as driving source, come the dynamic perfromance of survey sensor with this, such as transport function, logarithm amplitude/phase characteristic curves etc.
Test power is scalable in the scope from several kilograms to several thousand kilograms, only several square metres of plant areas.
Description
A kind of on the new principle basis, set up draw, pressure and LOAD CELLS dynamic test system belong to the metrology and measurement class.
Adopt at present and knock or method such as drop hammer when power class and LOAD CELLS are carried out dynamic test, precision is not high, and even to the power of high frequency sound, or LOAD CELLS can't be carried out dynamic test.Country metering institute utilizes the way of dropping hammer to carry out dynamic test for the force transducer of 40T to range, can only measure 2kc but frequency response is the highest.
This new principle comes down to the mechanics effect of electrohydraulic effect, is applied on the sensor dynamic test.Use this principle to set up " hydraulic dynamic testing system used for pressure sensor " (applyings date 850624. application number 85104740) and disclose in the patent gazette on January 7th, 1987, publication number is GK85104740.
Principle of the present invention is identical with used principle in " hydraulic dynamic testing system used for pressure sensor ", all be that commercial power is risen to tens thousand of volts, to low electrification condenser charge, place the interior sparking electrode of dielectric fluid by rectification, the whole electric energy on the electric energy capacitor are discharged suddenly in moment.
Here need adopt a kind of specialized designs, pressure pulse gathering-device with certain curve form, make the pressure pulse converting to force pulse of approximate δ function, with this input stimulus as tested power, LOAD CELLS dynamic test, by data acquisition and data handling system, can obtain the amplitude spectrum curve of power, LOAD CELLS, transport function and logarithm amplitude/phase characteristic curves.Because the Frequency spectrum ratio broad of this input signal, so can be with fork-like farm tool used in ancient China dynamic calibration frequency response than higher power, LOAD CELLS.
The surging force that utilizes this method to obtain, the power value can be regulated in the scope from several kilograms to several thousand kilograms, and equipment is small-sized, take up an area of only several square metres, small investment, single sensor testing expenses are low, and only a few minutes can obtain the various multidate informations of tested sensor at the scene from experiment beginning.
Draw, pressure and LOAD CELLS dynamic test system be made up of following several parts, be respectively described below:
1. heavy impulse current device
Come down to a charging circuit, purpose is that to experimental signal provides power the control desk part also is provided with and guarantees the stable circuit of sparking voltage except discharge and recharge and igniting etc. controlled.Sparking voltage surpasses or is lower than the specialized range of the value of requirement, and ignition circuit will not worked, to reach the purpose of automatic protection.
2. pressure pulse gathering-device and experiment table
After pressure pulse forms in arc chamber, the converting to force pulse by gathering-device.The pressure pulse gathering-device comes down to a start letter that inertia is less, and piston has certain curve form requirement, for being slidingly matched, any flexible member must not be installed therebetween between piston and the piston cylinder.
In order to obtain higher conventional efficient and plant factor, once experiment can be carried out dynamic test to two sensors simultaneously.On equipment, only need to change partly lever annex the dynamic test of sensor such as can carry out pulling force, pressure, weigh in addition.
3. data acquisition and data processing
Draw, pressure and LOAD CELLS dynamic test system, is furnished with special-purpose computer processing system, the Print All such as amplitude spectrum curve, mathematical model, logarithm amplitude/phase characteristic curves that begins to tested sensor from experiment comes out, only need time a few minutes, software package can also print above curve data Chinese character form, when experimental result need compare, any four empirical curves can compare on same screen.
Each ingredient title in the Figure of description
1, heavy impulse current device; 2, arc chamber; 3, electrode; 4, pressure pulse gathering-device; 5, force transducer; 6, data acquisition and disposal system; 7, dielectric liquid.
Claims (1)
- A kind of make according to the mechanics effect principle of electrohydraulic effect draw, pressure and LOAD CELLS dynamic test system, and be furnished with data acquisition and the data handling system of handling test data, the power of its experimental signal is provided by the heavy impulse current device, the present invention is characterized in:A. pressure pulse gathering-deviceAfter pressure pulse forms in arc chamber, the converting to force pulse by gathering-device, pressure pulse gathering-device come down to a start letter that inertia is little, and piston has certain curve form requirement, for being slidingly matched, any flexible member must not be installed therebetween between piston and the piston;B. by change the lever annex can to draw, pressure and LOAD CELLS carry out dynamic test, and can be simultaneously to two draw, pressure and LOAD CELLS carry out dynamic test.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 85108333 CN1007458B (en) | 1985-11-18 | 1985-11-18 | The tension, pressure and weighting transducers dynamic test system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 85108333 CN1007458B (en) | 1985-11-18 | 1985-11-18 | The tension, pressure and weighting transducers dynamic test system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN85108333A CN85108333A (en) | 1987-06-03 |
| CN1007458B true CN1007458B (en) | 1990-04-04 |
Family
ID=4795981
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 85108333 Expired CN1007458B (en) | 1985-11-18 | 1985-11-18 | The tension, pressure and weighting transducers dynamic test system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1007458B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2466368C1 (en) * | 2011-04-04 | 2012-11-10 | Государственное образовательное учреждение высшего профессионального образования "Южно-Уральский государственный университет" | Method of determining dynamic characteristics of tensometric pressure transducer (versions) |
| CN105181239A (en) * | 2015-07-13 | 2015-12-23 | 大连理工大学 | Test platform dynamic performance evaluation method with input and output signal waveform comparison |
| CN106525331B (en) * | 2016-11-25 | 2022-09-30 | 中国人民解放军61489部队 | Pen type free field pressure sensor calibration device |
-
1985
- 1985-11-18 CN CN 85108333 patent/CN1007458B/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| CN85108333A (en) | 1987-06-03 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C13 | Decision | ||
| GR02 | Examined patent application | ||
| C01 | Deemed withdrawal of patent application (patent law 1993) |