CN201724734U - Calibrating system for vibrating strain test system - Google Patents
Calibrating system for vibrating strain test system Download PDFInfo
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- CN201724734U CN201724734U CN2010202518807U CN201020251880U CN201724734U CN 201724734 U CN201724734 U CN 201724734U CN 2010202518807 U CN2010202518807 U CN 2010202518807U CN 201020251880 U CN201020251880 U CN 201020251880U CN 201724734 U CN201724734 U CN 201724734U
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Abstract
The utility model relates to a calibrating system for a vibrating strain test system, which comprises a recorder, an analyzer and a vibrating strain tester, wherein the vibrating strain tester comprises a calibration circuit, a filter circuit, a calculus operation circuit, an RMS detector and a digital display which are electrically connected, a 4066 two-way analog switch is also connected between the calibration circuit and the filter circuit, and the calibration circuit comprises a voltage amplification circuit, a series/parallel resonant frequency-selecting positive feedback circuit, a reference diode non-linear negative feedback amplitude stabilizer circuit and a low-pass filter circuit. The utility model has the advantages of simple structure and simple and convenient operation. Since the reference diode non-linear negative feedback amplitude stabilizer circuit is adopted, the stability of the amplitude and frequency of output signals is high, the performance is reliable, the degree of waveform distortion is low, and the interference on the vibrating strain tester in work is little.
Description
Technical field
The utility model relates to a kind of calibrating installation, is specifically related to the calibrating installation that a kind of aeromotor is vibrated the strain testing system.
Background technology
The vibration strain testing is an important ring in aeromotor design, the development test, and vibrating the strain testing data accurately and reliably is bases of analyzing and getting rid of engine failure.And vibration strain testing system from sensor (or foil gauge), cable, tester, registering instrument to analyser, the not normal distortion that all can cause test data of any link work, produce wrong analysis conclusion, influence engine failure and get rid of, incur loss through delay Development Schedule.Therefore, the functional reliability of vibration strain testing system itself is the key of vibration strain testing, before engine test, need calibrate inspection to whole vibration strain testing system, and the assurance system works is normal.
Common calibrating installation generally selects for use signal generator as tester, registering instrument and analyser inspection.Adopt this device to calibrate inspection, increased tester's workload on the one hand, the accuracy of the output signal of signal generator own, reliability will influence the calibration check result of test macro on the other hand, thereby it is also can influence the accuracy and the reliability of test data, and very inconvenient.
Summary of the invention
The purpose of this utility model is to overcome the deficiency of said structure, provides a kind of calibrating signal stable, and frequency, amplitude are reliable, detects the calibrating installation of vibration strain testing system easily and fast, exactly.
The technical solution of the utility model is: comprise registering instrument, analyser and vibration strain testing instrument, it is characterized in that: described vibration strain testing instrument is shown to be electrically connected by calibration circuit, filtering circuit, infinitesimal analysis computing circuit, RMS detection and numeral and forms, also be connected with 4066 two-way analog switch between calibration circuit and filtering circuit, the output terminal of vibration signal or strain signal is connected with 4066 two-way analog switch; Described calibration circuit comprises the voltage amplifier circuit of being made up of operational amplifier 1U1A, resistance 1R1,1R2,1R3,1R4,1R5, the series and parallel resonant selecting frequency positive-feedback circuit of being made up of resistance 1R1,1R6,1R7, electric capacity 1C1,1C2, non-linear negative feedback fixed amplitude circuit of being made up of switching diode 1D1,1D2,1R2, resistance 1R3,1R4,1R5, reference diode 1T1,1T2, resistance 1R4 of reference diode and the low-pass filter circuit of being made up of electric capacity 1C3,1C4, resistance 1R8,1R9, operational amplifier 1U1B connect to form.
The output terminal of the filtering circuit in the described vibration strain testing instrument is electrically connected registering instrument and analyser successively.
The utility model is simple in structure, and is simple to operation.Adopt the non-linear negative feedback fixed amplitude circuit of reference diode, good, the dependable performance of output signal amplitude frequency stability, waveform distortion is less, and the interference that produces during to the work of vibration strain testing instrument is very little.
Description of drawings
Fig. 1 is a structural representation of the present utility model.
Fig. 2 calibrates circuit theory diagrams among the utility model Fig. 1.
Among the figure: 1, registering instrument, 2, analyser, 3, vibration strain testing instrument, 4, calibration circuit, 5, vibration signal or strain signal, 6,4066 two-way analog switch, 7 filtering circuits, 8, the infinitesimal analysis computing circuit, 9, the RMS detection, 10, numeral shows.
Embodiment
The calibrating installation of vibration strain testing of the present utility model system comprises registering instrument 1, analyser 2 and vibration strain testing instrument 3.Vibration strain testing instrument 3 is electrically connected by calibration circuit 4, filtering circuit 7, infinitesimal analysis computing circuit 8, RMS detection 9 and numeral demonstration 10 to be formed, also be connected with 4066 two-way analog switch 6 between calibration circuit 4 and filtering circuit 7, the output terminal of vibration signal or strain signal 5 is connected with 4066 two-way analog switch 6.Calibration circuit 4 is by voltage amplifier circuit, series and parallel resonant selecting frequency positive-feedback circuit, and the non-linear negative feedback fixed amplitude circuit of reference diode, low-pass filter circuits etc. connect to form.Wherein voltage amplifier circuit is made up of operational amplifier 1U1A, resistance 1R1,1R2,1R3,1R4,1R5; Series and parallel resonant selecting frequency positive-feedback circuit is made up of resistance 1R1,1R6,1R7, electric capacity 1C1,1C2; The non-linear negative feedback fixed amplitude circuit of reference diode is made up of switching diode 1D1,1D2, resistance 1R2,1R3,1R4,1R5, reference diode 1T1,1T2, resistance 1R4; Low-pass filter circuit is made up of electric capacity 1C3,1C4, resistance 1R8,1R9 and operational amplifier 1U1B.The input end signal of registering instrument 1 and analyser 2 is connected by the output terminal that vibrates the filtering circuit 7 in the strain testing instrument 3 to be provided.
To " calibration " position, remove the failure of oscillation level signal of giving calibration circuit 4 by manual toggle switch, by the input of Q3 end, calibration circuit 4 promptly produces a standard tentering value and decides frequency AC sine signal.Signal output can be calibrated inspection to registering instrument 1, analyser 2 and vibration strain testing instrument 3 each several part circuit respectively separately, and the numeral by analyser 2 analysis results and vibration strain testing instrument 3 shows whether 10 is can the fast detecting test macro normal.Realize switching between calibrating signal and the vibration-testing signal by 4066 two-way analog switch 6, and when not calibrating by Q3 end input high level failure of oscillation.Like this, guaranteed that calibration circuit can not produce interference to measuring.
Because the non-linear negative feedback fixed amplitude circuit that reference diode 1T1 of the present utility model, 1T2, resistance 1R2,1R3,1R4,1R5, switching diode 1D1,1D2 form, make output amplitude in a scope of determining, the proportionate relationship that becomes to determine with the reference voltage of reference diode 1T1,1T2.Therefore certain amplitude of calibration circuit 4 generations is decided frequency sinusoidal voltage signal, has amplitude frequency stability preferably, and waveform distortion is less.
Claims (2)
1. calibrating installation that vibrates the strain testing system, comprise registering instrument (1), analyser (2) and vibration strain testing instrument (3), it is characterized in that: described vibration strain testing instrument (3) is electrically connected by calibration circuit (4), filtering circuit (7), infinitesimal analysis computing circuit (8), RMS detection (9) and numeral demonstration (10) to be formed, also be connected with 4066 two-way analog switch (6) between calibration circuit (4) and filtering circuit (7), the output terminal of vibration signal or strain signal (5) is connected with 4066 path analoging switch (6); Described calibration circuit (4) comprises the voltage amplifier circuit of being made up of operational amplifier 1U1A, resistance 1R1,1R2,1R3,1R4,1R5, the series and parallel resonant selecting frequency positive-feedback circuit of being made up of resistance 1R1,1R6,1R7, electric capacity 1C1,1C2, non-linear negative feedback fixed amplitude circuit of being made up of switching diode 1D1,1D2,1R2, resistance 1R3,1R4,1R5, reference diode 1T1,1T2, resistance 1R4 of reference diode and the low-pass filter circuit of being made up of electric capacity 1C3,1C4, resistance 1R8,1R9, operational amplifier 1U1B connect to form.
2. calibrating installation according to claim 1 is characterized in that: the output terminal of the filtering circuit (7) in the described vibration strain testing instrument (3) is electrically connected registering instrument (1) and analyser (2) successively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202518807U CN201724734U (en) | 2010-07-08 | 2010-07-08 | Calibrating system for vibrating strain test system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202518807U CN201724734U (en) | 2010-07-08 | 2010-07-08 | Calibrating system for vibrating strain test system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201724734U true CN201724734U (en) | 2011-01-26 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010202518807U Expired - Lifetime CN201724734U (en) | 2010-07-08 | 2010-07-08 | Calibrating system for vibrating strain test system |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104391263A (en) * | 2014-10-09 | 2015-03-04 | 中国船舶重工集团公司第七0九研究所 | Onsite calibrating apparatus of circuit board fault diagnosis automatic test system |
| CN104655179A (en) * | 2013-11-21 | 2015-05-27 | 珠海格力电器股份有限公司 | Stress-strain test method, device and system |
| CN105607614A (en) * | 2015-11-20 | 2016-05-25 | 西安航天计量测试研究所 | Calibration device and method of engine instruction and control matching performance tester |
| CN106802182A (en) * | 2015-11-26 | 2017-06-06 | 中国电力科学研究院 | A kind of calibration method of transmission line of electricity aeolian vibration on-Line Monitor Device |
| CN108088767A (en) * | 2017-12-15 | 2018-05-29 | 中国电子科技集团公司第四十研究所 | A kind of microwave density detector frequency hopping signal generator synchronous detection apparatus and method |
| CN110849313A (en) * | 2018-12-26 | 2020-02-28 | 中国航空工业集团公司北京长城计量测试技术研究所 | Strain gauge dynamic calibration method and device based on non-contact scanning measurement |
-
2010
- 2010-07-08 CN CN2010202518807U patent/CN201724734U/en not_active Expired - Lifetime
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104655179A (en) * | 2013-11-21 | 2015-05-27 | 珠海格力电器股份有限公司 | Stress-strain test method, device and system |
| CN104655179B (en) * | 2013-11-21 | 2017-11-14 | 珠海格力电器股份有限公司 | Stress-strain test method, apparatus and system |
| CN104391263A (en) * | 2014-10-09 | 2015-03-04 | 中国船舶重工集团公司第七0九研究所 | Onsite calibrating apparatus of circuit board fault diagnosis automatic test system |
| CN105607614A (en) * | 2015-11-20 | 2016-05-25 | 西安航天计量测试研究所 | Calibration device and method of engine instruction and control matching performance tester |
| CN105607614B (en) * | 2015-11-20 | 2017-12-26 | 西安航天计量测试研究所 | Engine instructs the calibrating installation and method with control matching tester |
| CN106802182A (en) * | 2015-11-26 | 2017-06-06 | 中国电力科学研究院 | A kind of calibration method of transmission line of electricity aeolian vibration on-Line Monitor Device |
| CN106802182B (en) * | 2015-11-26 | 2020-02-18 | 中国电力科学研究院 | Calibration method of power transmission line breeze vibration online monitoring device |
| CN108088767A (en) * | 2017-12-15 | 2018-05-29 | 中国电子科技集团公司第四十研究所 | A kind of microwave density detector frequency hopping signal generator synchronous detection apparatus and method |
| CN108088767B (en) * | 2017-12-15 | 2019-10-11 | 中国电子科技集团公司第四十一研究所 | A kind of microwave density detector frequency hopping signal generator synchronous detection apparatus and method |
| CN110849313A (en) * | 2018-12-26 | 2020-02-28 | 中国航空工业集团公司北京长城计量测试技术研究所 | Strain gauge dynamic calibration method and device based on non-contact scanning measurement |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20110126 |