CN107560814A - The reliability test system of laser vibration measurer - Google Patents
The reliability test system of laser vibration measurer Download PDFInfo
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- CN107560814A CN107560814A CN201710907358.6A CN201710907358A CN107560814A CN 107560814 A CN107560814 A CN 107560814A CN 201710907358 A CN201710907358 A CN 201710907358A CN 107560814 A CN107560814 A CN 107560814A
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- 238000012360 testing method Methods 0.000 title claims abstract description 38
- 230000007613 environmental effect Effects 0.000 claims abstract description 12
- 238000012545 processing Methods 0.000 claims abstract description 8
- 230000004069 differentiation Effects 0.000 claims abstract description 5
- 238000000151 deposition Methods 0.000 claims abstract description 3
- 238000009825 accumulation Methods 0.000 claims description 2
- 238000001514 detection method Methods 0.000 abstract description 5
- 238000005259 measurement Methods 0.000 description 3
- 238000004458 analytical method Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 125000004122 cyclic group Chemical group 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000004088 simulation Methods 0.000 description 2
- 238000010998 test method Methods 0.000 description 2
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Abstract
The present invention relates to a kind of reliability test system of laser vibration measurer.The present invention includes walk-in type environmental test equipment, for depositing and setting up laser vibration measurer, while can adjust all kinds of experimental enviroments according to the requirement of reliability test；Standard actuating vibration table, for producing standard vibration signal；Programmable voltage source, for applying voltage loads to laser vibration measurer；Control and data processing unit, for controlling standard actuating vibration table to produce standard vibration signal, the vibration signal that detection three-dimensional laser vialog receives, and the differentiation failed records with the out-of-service time.The present invention can apply temperature, humidity and voltage stress to laser vibration measurer as needed simultaneously, closer to actual operating mode, improve the confidence level of reliability test.
Description
Technical field
The present invention relates to a kind of reliability test system of laser vibration measurer, especially with regard to three-dimensional laser vialog can
By property pilot system.
Background technology
Laser vibration measurer is refraction, the reflection effect for utilizing optics universal, using the laser beam of sensor as transmitting light source,
The device of vibration measurement is carried out to testee.The features such as its detection range is big, precision is high, fast response time.
With the development of science and technology, especially high-grade, digitally controlled machine tools, Aero-Space, high precision cannon, auto industry and doctor
For subject skill etc. to the demand of vibration measurement, vibration measuring precision and reliability to laser vibration measurer propose higher requirement.Swash
The reliability test of flash ranging Vibration Meter can be the accident analysis of laser vibration measurer, manufacture and production Reliability Assurance, structure optimization
And the offer support such as reliability improvement and lifting.Therefore the global reliability pilot system of Study of Laser vialog has important
Meaning.
For the research of the reliability test of laser vibration measurer, the environmental test for only resting on off working state at present is ground
Study carefully, just to by environmental suitability checking test, not tested under the real detection working condition of simulation.Cause
This, for more preferable simulation realistic operating conditions, the present invention propose one kind can to laser vibration measurer simulate humiture and
The reliability test system of voltage loads, while can be differentiated and record the out-of-service time have to the failure of laser vibration measurer
Beneficial to the accurate analysis of reliability statistic testing.
The content of the invention
The technical problems to be solved by the invention are the fortune that the reliability test of current laser vibration measurer can not simulate reality
A kind of the problem of row operating mode, it is proposed that reliability test that humiture and voltage loads can be carried out to laser vibration measurer complete machine
System, while it is capable of the working condition of effective detection laser vibration measurer.
In order to overcome the above-mentioned deficiencies of the prior art, realized present invention employs following technical scheme：
The present invention includes walk-in type environmental test equipment, for depositing and setting up laser vibration measurer, while can be according to reliability
The requirement of experiment adjusts all kinds of experimental enviroments；Standard actuating vibration table, for producing standard vibration signal；Programmable voltage source, is used for
Apply voltage loads to laser vibration measurer；Control and data processing unit, for controlling standard actuating vibration table to produce standard vibration letter
Number, the vibration signal that detection three-dimensional laser vialog receives, and the differentiation failed records with the out-of-service time.
Further, described control and data processing unit, mainly by standard actuating vibration table control unit, video acquisition list
Member, failure differentiate to be formed with out-of-service time recording unit.Described standard actuating vibration table control unit, control standard actuating vibration table produce
Standard vibration signal；Testing laser is transmitted on standard actuating vibration table by laser vibration measurer, examinations vibration signal, by described
Video acquisition unit be transferred to described failure and differentiate and time recording unit；Described failure differentiates to be recorded with the out-of-service time
The laser vibration measurer that unit collects the standard accumulation signal of described standard actuating vibration table control unit and video acquisition unit
Measured signal be compared, if shape differences are larger, then it is assumed that laser vibration measurer fails, and records the time of failure, together
When feed back to walk-in type environmental test chamber, stop reliability test.
A kind of reliability test method of laser vibration measurer, including herein below：By laser vibration measurer to be measured with it is described
Standard actuating vibration table be arranged on walk-in type environmental test chamber in, according to reliability test need to laser vibration measurer apply it is warm and humid
Spend stress load；By described control and data processing unit, described standard actuating vibration table is controlled to produce standard vibration signal,
Standard voltage source is controlled to apply voltage loads to laser vibration measurer simultaneously；Laser vibration measurer is gathered by video acquisition unit to detect
The vibration signal arrived, the vibration signal detected is contrasted with standard signal, the work shape of automatic decision laser vibration measurer
State, the reliability of laser vibration measurer is assessed according to working condition.
Due to taking above technical scheme, it has the advantages that the present invention：
1st, the present invention can apply temperature, humidity and voltage stress to laser vibration measurer as needed simultaneously, closer to reality
Operating condition, improve the confidence level of reliability test.
2nd, the failure that the present invention can be to laser vibration measurer carries out automatic decision, and the out-of-service time is recorded automatically, made
Fail data is more accurate, is more beneficial for carrying out reliability assessment to laser vibration measurer.
Brief description of the drawings
Fig. 1 is the structural representation of the laser vibration measurer reliability test system of the present invention.
Embodiment
As shown in figure 1, a kind of vibration measurement with laser reliability test system provided by the invention, including by standard actuating vibration table and mark
Reference voltage source control unit 1, video acquisition unit 2, failure are differentiated at the control formed with out-of-service time recording unit 3 and data
Manage unit 4, programmable voltage source 5, laser vibration measurer 6, standard actuating vibration table 7 and walk-in type environmental test chamber 8.
Laser vibration measurer 6 to be measured and standard actuating vibration table 7 is soft installed in the inside of walk-in type environmental test chamber 8, regulation ring
Border chamber 8 applies the load of temperature and humidity stress to laser vibration measurer.
Standard actuating vibration table controls standard actuating vibration table 7 to produce standard vibration signal, same time control with standard voltage source control unit 1
Programmable standard voltage source processed applies electric stress load to laser vibration measurer 6.
Video acquisition unit 2 collects the standard vibration signal that laser vibration measurer is tested, and feeds back at control and data
Unit 4 is managed, differentiation is compared the vibration signal passed back with out-of-service time recording unit 3 with standard vibration signal by failing
It is right, judge whether laser vibration measurer 6 fails online, the time of automatic record failure if failure, while control walk-in type ring
Border chamber 8 stops reliability test.
Laser vibration measurer reliability test system and test method are further described with reference to instantiation.
Walk-in type environmental test chamber 8 is adjusted, control humiture stress applying mode is as follows：Humiture Cyclic Stress applies,
24h circulates for one, low temperature and low humidity：10 DEG C, the circulation of 20%RH applications 1/4；Normal temperature, low humidity：25 DEG C, 20%RH applications 1/2
Circulation；It is hot and humid：35 DEG C, the circulation of 80%RH applications 1/4；Warm variable Rate is no more than 1 DEG C/min.Pass through control and data
It is as follows that processing unit 1 controls standard voltage source to apply Cyclic Stress mode：Electric stress 220V, switching on and shutting down are carried out every half an hour
Experiment is once.Described standard actuating vibration table 7 is controlled to produce mark by described standard actuating vibration table and standard voltage source control unit 1
Quasi-sinusoidal vibration signal, its vibration level are 10g.The vibration that laser vibration measurer measures is collected by video acquisition unit 2 to believe
Number, differentiate that recording unit 6 with the out-of-service time judges whether laser vibration measurer fails by failing, if vibration signal is non-sine
Signal, or vibration level and standard signal source difference are more than 30%, then it is assumed that laser vibration measurer fails, after automatic record processing
Out-of-service time.Walk-in type environmental test chamber 8 is controlled simultaneously, stops reliability test.
Claims (2)
1. laser vibration measurer reliability test system, it is characterised in that including：
Walk-in type environmental test equipment, adjusted for depositing and setting up laser vibration measurer, while according to the requirement of reliability test
All kinds of experimental enviroments, including temperature and humidity；
Standard actuating vibration table, for producing standard vibration signal；
Programmable voltage source, for applying voltage loads to laser vibration measurer；
Control and data processing unit, for controlling standard actuating vibration table to produce standard vibration signal, monitor three-dimensional laser vialog
The vibration signal received, and carry out differentiation and the out-of-service time record of three-dimensional laser vialog failure.
2. laser vibration measurer reliability test system according to claim 1, it is characterised in that described control and data
Processing unit, mainly by standard actuating vibration table and standard voltage source control unit, video acquisition unit, failure differentiation and out-of-service time
Recording unit forms；
Described standard actuating vibration table and standard voltage source control unit, control standard actuating vibration table produce standard vibration signal, and
Standard voltage source is controlled to apply voltage loads to laser vibration measurer；
Testing laser is transmitted on standard actuating vibration table by described laser vibration measurer, examinations vibration signal, by described
The vibration signal that video acquisition unit collection laser vibration measurer is tested, feeds back to failure and differentiates and out-of-service time recording unit；
Described failure, which differentiates, collects described standard accumulation signal with video acquisition unit with out-of-service time recording unit
The vibration signal of laser vibration measurer be compared, if vibration signal is nonsinusoidal signal or vibration level and standard signal
Source difference is more than 30%, then it is assumed that laser vibration measurer fails, and records the time of failure, while feeds back to walk-in type environmental test
Case, stop reliability test.
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| CN201710907358.6A CN107560814A (en) | 2017-09-29 | 2017-09-29 | The reliability test system of laser vibration measurer |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114636465A (en) * | 2022-03-22 | 2022-06-17 | 中国计量科学研究院 | Radio frequency counting device for nucleic acid extractor of photoelectric sensor |
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