CN209372128U - Virtual instrument system based on multi-parameters test calibration - Google Patents
Virtual instrument system based on multi-parameters test calibration Download PDFInfo
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- CN209372128U CN209372128U CN201822075178.9U CN201822075178U CN209372128U CN 209372128 U CN209372128 U CN 209372128U CN 201822075178 U CN201822075178 U CN 201822075178U CN 209372128 U CN209372128 U CN 209372128U
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Abstract
The virtual instrument system based on multi-parameters test calibration of the utility model includes sensor, signal condition and acquisition module and PC machine；Signal condition and acquisition module are using SC Express module.The utility model uses the advanced bus architecture of PXI, and the test function collection of many physical parameters is closed it, is designed using modularization hierarchical structure, so that system hardware and software is expansible, can cut, is reusable.
Description
Technical field
The utility model relates to instrument tests to calibrate field, and in particular to a kind of Virtual instrument based on multi-parameters test calibration
Device system.
Background technique
Comprehensive parameters test is widely used in the fields such as aerospace, national defence, electronics, industrial automation, and measurement is reliable
Property directly affects structure, equipment, the quality of product.Comprehensive parameters test can find in time setting for product in product development early stage
Defect and weak link are counted, to help improve the reliability of product.
Previous common comprehensive parameter measuring means are that testing equipment is installed to test site to carry out detection calibration.Due to
The parameter of measurement is more, measure field distribution is wide, and tester needs to carry a variety of test equipments, such as: charge amplifier, electricity
Table, oscillograph, multichannel vialog, distortion meter, data logger, stopwatch etc. are pressed, this comes to on-site proving calibration tape
Big inconvenience.Later use digitized frequency meter, dynamic signal analyzer, but these instruments depend on into
Mouthful, costly, processing technology is complicated, and localization process relatively falls behind, and the degree of automation is not high, using being restricted.
Measuring instrument develops to virtual instrument technology direction at present.Virtual instrument technology is mainly using high performance
Modularized hardware completes various tests, measurement and the application automated in conjunction with the software of high efficient and flexible.Designer only need to be by
Computer platform, various functions of designed, designed instrument according to demand, so that user is seemingly in one himself design of operation
Test equipment is the same.Virtual instrument is mainly instead of the operation and display portion of traditional instrument instrument, and with lower-cost biography
Sensor substitutes the physics probe segment of instrument, by the operation button of instrument and the unified display of measurement data in visual user
In order to user's operation and observation on interface.
CN102539266A discloses a kind of fatigue tester gauging calibration virtual instrument and fatigue test gauging calibration side
Method, CN105318909A disclose a kind of large vibration table system health monitoring device, and CN1021251556A discloses sinusoidal letter
Number four parameters testing method and virtual instrument signal supervisory instrument.Virtual instrument technology is all gradually integrated to reality by these technologies
Parameter measurement, calibration and calibration test in, but mostly limit to only in a certain item or several parameters, application scenarios are opposite.
For the Testing And Regulating of comprehensive parameters test, because of the complexity of its measurement object and the diversification of user demand, current
Virtual instrument technology cannot fully meet the demand of user, be mainly shown as: firstly, virtual instrument system only includes test
Function lacks the management to instrument and user；Secondly, these systems are all after user demand determines, by exploit person
Member's orientation exploitation, when having new demand and new task, developer requires a great deal of time carry out demand point
Analysis, system design, written in code, modular debugging, lead to the waste of a large amount of manpower and material resources；Finally, comprehensive parameters pilot system is logical
It often include the detection calibration of multi-parameter, when user only needs the wherein test of several parameters, using fixed integration test
Instrument not only will cause the redundancy of software systems, also bring waste economically to user.
Utility model content
The purpose of this utility model is to provide a kind of virtual instrument systems based on multi-parameters test calibration, use spirit
It is living.
To achieve the above object, the utility model provides a kind of virtual instrument system based on multi-parameters test calibration
System, which is characterized in that including sensor, signal condition and acquisition module and PC machine；The sensor is mounted in measurand；
The signal condition is connect with acquisition module with the sensor；The PC machine is connect with the signal condition with acquisition module；
The detection calibration system software is loaded into the PC machine；The signal condition and acquisition module are using SC Express mould
Block.
Compared with prior art, the advantageous effects of the utility model are:
The utility model uses the advanced bus architecture of PXI, and the test function collection of many physical parameters is closed it, forms intelligence
Test equipment that can be unified combines, and has the advantages that miniature portable.
Detailed description of the invention
The virtual instrument system based on multi-parameters test calibration of the utility model is provided by examples and drawings below.
Fig. 1 is the utility model hardware embodiments figure.
Fig. 2 is the digital electric vibration table embodiment figure of the utility model.
Fig. 3 is that sensor installs top view in the digital electric vibration table embodiment of the utility model.
Fig. 4 is the utility model shock response spectrum testing stand embodiment figure.
Specific embodiment
Below with reference to FIG. 1 to FIG. 4 to the utility model based on the virtual instrument system of multi-parameters test calibration make into
The detailed description of one step.
The virtual instrument system based on multi-parameters test calibration of the utility model includes sensor, signal condition and acquisition
Module and PC machine；The sensor is mounted in measurand, for measuring each parameter；The signal condition and acquisition module with
The sensor connection；The PC machine is connect with the signal condition with acquisition module；The PC machine is used for each parameter testing, school
Quasi- and detection calibration is shown.
The sensor includes accelerometer, force snesor, torque sensor, pressure sensor, weighing sensor, platinum electricity
Resistance, humidity sensor, displacement sensor and angular encoder；The accelerometer include charge output type single-axis accelerometer,
Voltage output type single-axis accelerometer, voltage output type three axis accelerometer and charge output type shock accelerometer；It is described
Force snesor includes strain force sensor and piezoelectric force transducer, and the pressure sensor includes strain pressure transducer
And piezoelectric pressure indicator.
The signal condition and acquisition module are using SC Express module.SC Express module is built in industry
It on the PXI platform of standard, is optimized specifically for specific sensor type, the acquisition of collection data and signal condition function
In the module of one.
As shown in Figure 1, SC Express module includes NI PXIe-4480 board, NI PXIe-4492 board, NI
PXIe-4331 board, NI PXIe-4357 board, NI PXIe-4303 board and NI PXIe-6614 board.Every kind of board needle
Specific sensor type is optimized, data acquisition and signal condition function are integrated.NI PXIe-4480 plate
Card, for carrying out conditioning acquisition to piezoelectric transducer (output charge) measuring signal, piezoelectric accelerometer (output charge) can
For vibrating, shock-testing, piezoelectric force transducer (output charge) is used for dynamic force test, and piezoelectric pressure indicator is (defeated
Charge out) it can be used for dynamically pressure testing；NI PXIe-4492 board, for piezoelectric transducer (output voltage) measuring signal
Carry out conditioning acquisition, piezoelectric accelerometer (output voltage) can be used for vibrating, shock-testing, strain force sensor (output
Voltage) it is tested for static force, strain pressure transducer (output voltage) can be used for pressure test；NI PXIe-4331 plate
Card for carrying out conditioning acquisition to various strain gauge transducer measuring signals, and provides voltage drive to strain gauge transducer；NI
PXIe-4357 board for carrying out conditioning acquisition to thermal rsistance sensors measuring signal, and provides constant current to thermal rsistance sensors and swashs
It encourages；NI PXIe-4303 board, for carrying out conditioning acquisition to measuring signals such as displacement sensor, humidity transmitters；NI
PXIe-6614 board, for carrying out conditioning acquisition to angular encoder measuring signal.
According to the board that mission requirements sensors configured and the signal condition and acquisition module include, so that this is practical new
The virtual instrument system using flexible based on multi-parameters test calibration of type need to only configure corresponding if only partial parameters is needed to test
Sensor and board, once there is new demand, only need to increase respective sensor and board can adapt to new demand immediately.
The PC machine includes PXI cabinet, embedded controller and display screen；The embedded controller is embedded in the PXI cabinet
Interior, the SC Express module is inserted on the PXI cabinet, realizes embedded controller and SC by PXI cabinet
The connection of Express module (board)；The display screen realizes the connection with embedded controller by cable.
The embedded controller collection pre-installs 64 WIN7 operations at double-core core I5 processor, 4G memory, 250G hard disk
System；The embedded controller completes the control task of whole system, and it is pre- that detection calibration system software is loaded into embedded controller
In the WIN7 operating system of dress.
More preferably, the PXI cabinet selects the PXIe-1082 cabinet of NI company.PXIe-1082 cabinet has 8 slots,
Wherein 4 mixing slots, 3 PXI Express slots, 1 PXI Express timing slot.The embedded controller
Select the PXIe-8840 embedded controller of NI company.
The PC machine shows that the prior art can be used in these for each parameter testing, calibration and detection calibration.
It is described based on multi-parameters test calibration virtual instrument system the Static and dynamic performance of following system can be tested,
Calibration: electric vibrating system, bump testing machine, shock table, Material Testing Machine, shock response spectrum testing stand, vibration-isolating platform,
General Oscillation system, general impact system, three shaft vibration systems, temperature and humidity field, temperature humidity vibration experiment etc..
The virtual instrument system based on multi-parameters test calibration can carry out the Testing And Regulating of following items: waveform is permitted
Poor calibration, velocity variable calibration, the calibration of the frequency error of indication, the sinusoidal signal distortion factor, dynamic range calibration, random signal inspection
It tests, the calibration of acceleration signal-to-noise ratio, acceleration amplitude stability, sinusoidal thrust calibration, Random Thrust calibration, frequency response characteristic school
Standard, table top oscillation crosswise ratio, table top uniform amplitude degree, table top total harmonic distortion, the table top acceleration error of indication, acceleration are always equal
The total root mean square control precision calibration of precision, acceleration that square error, acceleration power spectral density indicating value are calibrated, frequency sweep is shaken surely adds
The calibration of speed-power spectrum density control precision, the total root mean square indicating value calibration of sinusoidal plus broad-band random vibration acceleration, sine are widened
The calibration of band random vibration amplitude indicating value, the calibration of sinusoidal plus broad-band random vibration power spectral density, narrowband random widen the random vibration of band
The total root mean square indicating value calibration of dynamic acceleration, narrowband random add the calibration of broad-band random vibration amplitude indicating value, narrowband random widen band with
The calibration of machine vibration power spectral density, temperature correction, humidity calibration, the test of vibration-isolating platform intrinsic frequency, amplitude phase error testing,
Location error test, uniformity test, total harmonic distortion test, general shock-testing, General Oscillation test, multi -components power are surveyed
Examination, displacement measurement, angle measurement etc..
The signal processing method that the virtual instrument system based on multi-parameters test calibration is included includes: from power
Spectrum, crosspower spectrum, autocorrelation spectrum, coherence spectra, probability distribution, probability density, shock response spectrum, FRF amplitude spectrum, FRF phase
Spectrum, FRF degree of coherence, FRF Nai Sikuite and power spectral-density analysis etc..
The virtual instrument system based on multi-parameters test calibration of the utility model is now described in detail with specific embodiment.
Embodiment 1:
As shown in Fig. 2, the virtual instrument system based on multi-parameters test calibration of the present embodiment includes PXIe-1082 cabinet
1, the PXIe-8840 embedded controller 2 that is embedded in cabinet, is installed on number at the PXIe-4492 board 3 being inserted in cabinet
Measurement accelerometer 7 and display 4 on formula electric vibration table 5 (measurand)；Measurement accelerometer 7 is mounted on digital electric
Dynamic 5 table top center of shake table, measurement accelerometer 7 are connect with PXIe-4492 board 3 with cable.Digital electric vibration table 5
On be also equipped with control accelerometer 6, control accelerometer 6 connect with shake table controller 8, controlled by shake table controller 8
Digital electric vibration table 5 moves.
Enter detection calibration system software operation interface by display 4b, option board Card Type: PXIe-4492, setting
Corresponding instrument initial configuration, pilot project are selected as " the table top acceleration amplitude error of indication ".Choose high, normal, basic three frequencies
Value, takes large, medium and small three vibration amplitudes to measure under selected frequency values.
As shown in figure 3, five accelerometers are rigidly attached to digital 5 table top center of electric vibration table and different-diameter
On circumference, wherein an accelerometer 11 is located at 9 center of table top, and two accelerometers 12 are located on 10 axis of trunnion, and two
A accelerometer 13 is located on vertical 10 axis of trunnion.Five accelerometers are all connect with PXIe-4492 board 3 with cable.
Pilot project is " the table top acceleration amplitude error of indication ", loads five sensor acquisition channels.In experiment work
In frequency range, maximum vibration under 10 frequency values (including upper and lower limit frequency values) and corresponding frequencies is at least chosen by octave
The 50% of amplitude measures
Can be needed to add other pilot projects according to task, such as " frequency response characteristic calibration ", " table top oscillation crosswise ratio ",
" table top total harmonic distortion ", " the table top acceleration error of indication ", " the total root-mean-square error of acceleration " etc., are completed according to corresponding configuration
Every test objective.
Embodiment 2
As shown in figure 4, the virtual instrument system based on multi-parameters test calibration of the present embodiment includes PXIe-1082 cabinet
1b, the PXIe-8840 embedded controller 2b being embedded in cabinet, the PXIe-4480 board 3b being inserted in cabinet, it is installed on punching
Hit measurement shock transducer 16, the display 4b on response spectra testing stand 14, measurement shock transducer 16 and PXIe-4480 board
3b is connected with cable.
It is also equipped with control shock transducer 15 on shock response spectrum testing stand 14 (measurand), controls shock transducer
15 are connect with shock response spectrum testing stand controller 17 with cable, and pendulum 18, punching are arranged above shock response spectrum testing stand 14
Response spectra testing stand controller 17 is hit to connect with shock response spectrum testing stand 14.
Enter detection calibration system software operation interface by display 4b, option board Card Type: PXIe-4480, setting
Sampling trigger signal channel and trigger signal amplitude is arranged in corresponding instrument initial configuration.
When test, rises pendulum 18 and generate potential energy, then putting down pendulum 18 makes its impact response spectra testing stand 14
Face end face.Shock response spectrum testing stand parameter is set according to test requirements document, acquires transient impact time-domain signal simultaneously after dropping hammer
Calculate shock response spectrum.
In shock response spectrum analytic process, setting spectrum initial frequency and cutoff frequency, the selection of octave and damping ratio,
Acceleration signal type, shock response spectrum include maximum spectrum, residual spectra, initial spectrum, absolute spectrum and relative spectrum, totally six kinds of selections.
Spectrum analysis is completed in addition, shows the waveform diagram of attack time signal and shock response spectrum in system main interface.
The virtual instrument system based on multi-parameters test calibration of the utility model realizes a kind of generalization, modularization, one
Body, intelligentized high-performance Data Collective of Parameters, analysis, processing system, system have displacement, speed, acceleration, power,
The kinematic parameters such as torque, pressure, temperature, humidity, mechanics parameter, environmental parameter quiet dynamic power of test, be able to achieve vibration with
The field calibrations such as dynamic environmental tests equipment, temperature and humidity environmental test equipment, the material testing apparatus such as impact；System has in height
Poly-, lower coupling such as can cut, is expansible, is reusable at the features, when facing new test assignment, the test equipment bought
Channel extension, function increase etc. can be completed by reconfiguring in module, constitutes new test macro, meets continually changing survey
Trial business and non-standard test task.
Claims (4)
1. the virtual instrument system based on multi-parameters test calibration, which is characterized in that including sensor, signal condition and acquisition mould
Block and PC machine；The sensor is mounted in measurand；The signal condition is connect with acquisition module with the sensor；Institute
PC machine is stated to connect with the signal condition with acquisition module；
The signal condition and acquisition module are using SC Express module.
2. the virtual instrument system as described in claim 1 based on multi-parameters test calibration, which is characterized in that the sensor
Including accelerometer, force snesor, torque sensor, pressure sensor, weighing sensor, platinum resistance, humidity sensor, displacement
Sensor and angular encoder；The accelerometer includes charge output type single-axis accelerometer, the acceleration of voltage output type single shaft
Degree meter, voltage output type three axis accelerometer and charge output type shock accelerometer；The force snesor includes strain-type
Force snesor and piezoelectric force transducer.
3. the virtual instrument system as described in claim 1 based on multi-parameters test calibration, which is characterized in that the SC
Express module includes NI PXIe-4480 board, NI PXIe-4492 board, NI PXIe-4331 board, NI PXIe-
4357 boards, NI PXIe-4303 board and NI PXIe-6614 board.
4. the virtual instrument system as described in claim 1 based on multi-parameters test calibration, which is characterized in that the PC machine packet
Include PXI cabinet, embedded controller and display screen；The embedded controller is in the PXI cabinet, the SC Express mould
Block is inserted on the PXI cabinet, and the connection of embedded controller and SC Express module is realized by PXI cabinet；It is described aobvious
Display screen realizes the connection with embedded controller by cable.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201822075178.9U CN209372128U (en) | 2018-12-11 | 2018-12-11 | Virtual instrument system based on multi-parameters test calibration |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109443438A (en) * | 2018-12-11 | 2019-03-08 | 上海精密计量测试研究所 | Virtual instrument system based on multi-parameters test calibration |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109443438A (en) * | 2018-12-11 | 2019-03-08 | 上海精密计量测试研究所 | Virtual instrument system based on multi-parameters test calibration |
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