CN106482685B - Vibration displacement transducer dwell calibration system and its calibration method - Google Patents
Vibration displacement transducer dwell calibration system and its calibration method Download PDFInfo
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- CN106482685B CN106482685B CN201510545567.1A CN201510545567A CN106482685B CN 106482685 B CN106482685 B CN 106482685B CN 201510545567 A CN201510545567 A CN 201510545567A CN 106482685 B CN106482685 B CN 106482685B
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Abstract
This application discloses a kind of vibration displacement transducer dwell calibration system and its calibration methods, this method is calibrated using vibration displacement transducer dwell calibration system, wherein, vibration displacement transducer dwell calibration system includes: the first end that piezoelectric element is set to measuring staff, grating scale is set to the second end of measuring staff, the conducting wire being connected with piezoelectric element and the conducting wire being connected with grating scale are connected with board, and board is communicated with computer equipment and connect；Gage button is installed on the first end of measuring staff, and gage button is electrically connected with piezoelectric element；Holding frame is set to pedestal, and measuring staff can be moved along towards the direction close to or far from the holding frame；The signal input part of data collector is used for and is calibrated vibration displacement sensor and is electrically connected；The signal output end of data collector is electrically connected with computer equipment；The signal output end of computer equipment and data collector is electrically connected, meanwhile, computer equipment is communicated with raster pattern displacement corrector and is connect.
Description
Technical field
The present invention relates to mechanical oscillation field of measuring technique, calibrate system more particularly to a kind of vibration displacement transducer dwell
System and calibration method.
Background technique
Vibration displacement sensor is the important measuring cell in vibration measurement, is widely used in the monitoring and survey in each field
Amount.But vibration displacement sensor in the fabrication process and after a period of use will demarcate its output sensitivity, lead to
Vibration displacement sensor is calibrated frequently with vibration displacement calibrating device for sensors.
As shown in Figure 1, existing vibration displacement calibrating device for sensors mainly include pedestal 01, it is digital multimeter 02, preceding
It sets amplifier 03, D.C. regulated power supply 04, be calibrated displacement sensor 05, fixed cutting ferrule 06, gage button 07, digital display micrometer caliper
08。
It by digital display micrometer caliper 08 and is calibrated displacement sensor 05 before calibration and fixes, gage button 07 is fixed on digital display
On the measuring staff of micrometer caliper 08；It the use of regulated power supply 04 is to be calibrated displacement sensor 05 to power when calibration, digital multimeter
02 measures its output signal；By the rotation of digital display micrometer caliper 08 to the position that is calibrated displacement sensor 05 and is in contact, press
The zero button of lower digital display micrometer caliper 08, and the output valve of reading number multimeter 02, digital multimeter 02 is defeated at this time
Value is zero position output value out；According to the stroke of the interval adjustment digital display micrometer caliper 08 of regulation, and record by point digital versatile
The output valve of table 02 after recording to all measurement point output valves, carries out calculation processing to data.
It is calibrated using existing vibration displacement calibrating device for sensors, calibration personnel is needed to manually adjust digital display spiral
The shift value of mircrometer gauge 08, manually recorded digital multimeter 02 output valve and handle data, low efficiency；In adjustment zero-bit and often
When a calibration point, when each independent measurement circulation or different calibrators operate, deviation can be introduced, precision is low, and its
Data processing, which calculates, uses least square method, and calculating process is complicated, if slightly neglecting, is easy to appear mistake, is not able to satisfy reality
Demand.
Therefore, how to improve the calibration accuracy of vibration displacement sensor is that those skilled in the art need the technology solved to ask
Topic.
Summary of the invention
In view of this, the purpose of the application is to provide a kind of vibration displacement transducer dwell calibration system and calibration method,
The efficiency and calibration accuracy when calibrating to vibration displacement sensor can be improved.
This application provides a kind of vibration displacement sensor calibrating systems, comprising: is installed on the raster pattern displacement school of pedestal
Quasi- device, the raster pattern displacement corrector include measuring staff, grating scale, board, and the measuring staff is exposed to raster pattern displacement school
The end of the outside of quasi- device is first end, and the end that the measuring staff is placed in the inside of the raster pattern displacement corrector is second
End, the piezoelectric element is set to the first end of the measuring staff, and the grating scale is set to the second end of the measuring staff, and described
Conducting wire that voltage component is connected and the conducting wire being connected with the grating scale are connected with the board, the board and institute
It states computer equipment and communicates connection；For with the gage button that is calibrated vibration displacement sensor and is in contact, the gage button is installed on
The first end of the measuring staff, and the gage button is electrically connected with the piezoelectric element；Vibration displacement sensing is calibrated for installing
The holding frame of device, the holding frame are set to the pedestal and are oppositely arranged with the first end of the measuring staff, and the measuring staff can
It is moved along towards the direction close to or far from the holding frame；Data collector, the signal input part of the data collector
For be calibrated vibration displacement sensor and be electrically connected；The signal output end of the data collector and the computer equipment
Signal input part be electrically connected；Computer equipment, the signal output end phase of the computer equipment and the data collector
Electrical connection, meanwhile, the computer equipment is communicated with the displacement corrector and is connect.
Preferably, the raster pattern displacement corrector is additionally provided with guide rail, and the measuring staff is along the guide rail towards close
Or the direction far from the holding frame moves.
Preferably, the raster pattern displacement corrector further includes motor and the transmission that is connected with the motor, described
Motor and the computer equipment communicate to connect, and the transmission is connected with the second end of the measuring staff, and the motor is used for
The transmission is driven to rotate, the transmission drives the measuring staff to transport along towards the direction close to or far from the holding frame
It is dynamic.
Preferably, the pedestal is additionally provided with guide-track groove, the holding frame can along the guide-track groove towards or it is close
The direction of the displacement corrector moves；The holding frame is additionally provided with retaining mechanism, and the retaining mechanism is used for the folder
It holds frame and is anchored on the guide-track groove.
Preferably, the pedestal is additionally provided with multiple adjustment parts, and multiple adjustment parts are placed in the bottom of the pedestal.
Preferably, the first end of the measuring staff is provided with inside groove, the piezoelectric element be set to the inside groove and with it is described
The conducting wire that piezoelectric element is connected is connected through the measuring staff and across the second end of the measuring staff with the board.
Preferably, the gage button is disc type gage button.
Meanwhile present invention also provides a kind of calibration method of vibration displacement sensor calibrating system, the vibration displacements
The calibration method of sensor calibrating system uses vibration displacement sensor calibrating system as described above, includes the following steps: to walk
Rapid one: vibration displacement sensor will be calibrated and be installed on the holding frame, and the gage button is installed on the first of the measuring staff
End, when the skip signal of the piezoelectric element occurs in the computer equipment, the gage button is installed in place, and by the piezoelectricity
The skip signal of element resets；Step 2: the computer equipment sends signal, the light to the raster pattern displacement corrector
After grating displacement corrector receives signal, the measuring staff is towards close to the direction fortune for being calibrated vibration displacement sensor
Dynamic, so that the gage button is in contact with vibration displacement sensor is calibrated, the piezoelectric element triggers skip signal, the calculating
Machine equipment receives this skip signal, at this point, the raster pattern displacement corrector, which receives the computer equipment, issues signal,
The measuring staff stop motion, the data collector measure the zero-bit output signal for being calibrated vibration displacement sensor and by this zero
Position output signal is transmitted to the computer equipment, while grating scale reading resets；Step 3: the computer equipment to
The raster pattern displacement corrector sends signal, and after the raster pattern displacement corrector receives signal, the measuring staff is towards far
From the direction movement for being calibrated vibration displacement sensor, when the grating scale measures the displacement of the measuring staff and is calibrated shake
When the full scale of dynamic displacement is identical, the raster pattern displacement corrector receives the signal from the computer equipment, described
Measuring staff stop motion, the data collector measure the Full-span output signal for being calibrated vibration displacement sensor and by the full amounts
Journey output signal is transmitted to computer equipment, and the computer equipment obtains being calibrated vibration displacement sensor by calculating
Zero error completes zero error calibration；Step 4: it after zero error calibration to be done, is sensed according to vibration displacement is calibrated
The range of device is arranged multiple measurement points and changes the survey of the raster pattern displacement corrector by the control of the computer equipment
Span is from the data collector can successively obtain the output signal of each measurement point, and the computer equipment receives and remembers
It records the output signal of each measurement point and is calculated according to the data measured, obtain the static state for being calibrated vibration displacement sensor
Sensitivity, the static amplitude linearity, hysterisis error and amplitude repeatability.
Preferably, in step 4, including the upper limit value point and lower limitation point that are calibrated vibration displacement sensor, root
11 measurement points are divided into according to the range for being calibrated vibration displacement sensor.
Preferably, step 4 is repeated several times.
A kind of vibration displacement sensor calibrating system provided herein, comprising: be installed on the raster pattern displacement of pedestal
Calibrator, raster pattern displacement corrector include measuring staff, grating scale, board, and measuring staff is exposed to the outside of raster pattern displacement corrector
End be first end, measuring staff be placed in the inside of the raster pattern displacement corrector end be second end, piezoelectric element setting
In the first end of the measuring staff, grating scale is set to the second end of the measuring staff, the conducting wire that is connected with voltage component and with light
The conducting wire that grid ruler is connected is connected with board, and board is communicated with computer equipment and connect；For be calibrated vibration position
The gage button that displacement sensor is in contact, gage button is installed on the first end of the measuring staff, and gage button is electrically connected with piezoelectric element；For
Installation is calibrated the holding frame of vibration displacement sensor, and holding frame is set to the pedestal and opposite with the first end of measuring staff sets
It sets, measuring staff can be moved along towards the direction close to or far from holding frame；Data collector, the signal input of data collector
End for be calibrated vibration displacement sensor and be electrically connected；The signal output end of data collector and the signal of computer equipment
Input terminal is electrically connected；The signal output end of computer equipment, computer equipment and data collector is electrically connected, meanwhile, meter
Calculation machine equipment is communicated with displacement corrector to be connect.Compared with prior art, by controlling raster pattern position using computer equipment
The stroke of the measuring staff of calibrator is moved and using the stroke of optical scale measurement measuring staff, so as to being calibrated vibration displacement sensor
Measurement point measure, and when measuring every time, data collector can be set the data transfer of acquisition to computer
Standby, computer equipment records corresponding data-signal, and inputs corresponding algorithm in computer equipment in advance, calculates
Machine equipment calculates data according to algorithm, and the corresponding standard value for being calibrated vibration displacement sensor can be obtained, thus,
The efficiency and calibration accuracy when calibrating to vibration displacement sensor can be improved.
Meanwhile present invention also provides a kind of calibration method of vibration displacement sensor calibrating system, vibration displacement sensings
The calibration method of device calibration system uses vibration displacement sensor calibrating system as described above, includes the following steps: step 1:
Vibration displacement sensor will be calibrated and be installed on holding frame, and gage button is installed on to the first end of measuring staff, machine equipment to be calculated goes out
When the skip signal of existing piezoelectric element, gage button is installed in place, and the skip signal of piezoelectric element is resetted；Step 2: computer
Equipment sends signal to raster pattern displacement corrector, and after raster pattern displacement corrector receives signal, measuring staff is towards close to by school
The direction of quasi- vibration displacement sensor moves, so that gage button is in contact with vibration displacement sensor is calibrated, piezoelectric element triggering
Skip signal, computer equipment receive this skip signal, at this point, raster pattern displacement corrector receives computer equipment sending
Signal, measuring staff stop motion, data collector measure the zero-bit output signal for being calibrated vibration displacement sensor and by the zero-bits
Output signal is transmitted to computer equipment, while grating scale reading resets；Step 3: computer equipment is displaced to raster pattern and calibrates
Device sends signal, and after raster pattern displacement corrector receives signal, measuring staff is directed away from the side for being calibrated vibration displacement sensor
To movement, when the displacement that grating scale measures measuring staff is identical as the full scale for being calibrated vibration displacement, raster pattern displacement corrector
The signal from computer equipment, measuring staff stop motion are received, data collector, which is measured, is calibrated vibration displacement sensor
The Full-span output signal is simultaneously transmitted to computer equipment by Full-span output signal, computer equipment by calculating, obtain by
The zero error of vibration displacement sensor is calibrated, zero error calibration is completed；Step 4: after zero error calibration to be done, root
Multiple measurement points are set according to the range for being calibrated vibration displacement sensor, by the control of computer equipment, change raster pattern position
The measurement distance of calibrator is moved, data collector can successively obtain the output signal of each measurement point, and computer equipment receives
And record the output signal of each measurement point and calculated according to the data measured, it obtains being calibrated vibration displacement sensor
Static sensitivity, the static amplitude linearity, hysterisis error and amplitude repeatability.Compared with prior art, by utilizing computer
Equipment controls the stroke of the measuring staff of raster pattern displacement corrector and using the stroke of optical scale measurement measuring staff, so as to by school
The measurement point of quasi- vibration displacement sensor measures, and when measuring every time, data collector can be by the measurement number of acquisition
According to computer equipment is transmitted to, computer equipment records corresponding data-signal, and defeated in computer equipment in advance
Enter corresponding algorithm, computer equipment calculates data according to algorithm, can be obtained and is calibrated vibration displacement sensor
Corresponding standard value, it is thus possible to improve the efficiency and calibration accuracy when calibrating to vibration displacement sensor.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
Some embodiments of invention for those of ordinary skill in the art without creative efforts, can be with
It obtains other drawings based on these drawings.
Fig. 1 is the structural schematic diagram of vibration displacement calibrating device for sensors in the prior art；
Fig. 2 is the structural representation of vibration displacement transducer dwell calibration system in specific embodiment provided herein
Figure；
Fig. 3 is the structural schematic diagram of raster pattern displacement corrector in vibration displacement transducer dwell calibration system shown in Fig. 2；
Wherein, in Fig. 1:
01 pedestal, 02 digital multimeter, 03 preamplifier, 04 D.C. regulated power supply, 05 are calibrated displacement sensor, 06
Fixed cutting ferrule, 07 gage button, 08 digital display micrometer caliper；
Fig. 2 is into Fig. 3:
1 raster pattern displacement corrector, 2 piezoelectric elements, 2-1 motor, 2-2 transmission, 2-3 guide rail, 2-4 measuring staff, 2-5 grating
Ruler, 2-6 board, 3 gage buttons, 4 retaining mechanisms, 5 are calibrated vibration displacement sensor, 6 pedestals, 7 data collectors, 8 holding frames, 9
Fastener, 10 computer equipments, 11 adjustment parts.
Specific embodiment
The invention discloses a kind of vibration displacement transducer dwell calibration system and calibration method, can be improved to vibration position
Efficiency and calibration accuracy when displacement sensor is calibrated.
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
Fig. 2 and Fig. 3 are please referred to, wherein Fig. 2 is vibration displacement sensor in specific embodiment provided herein
The structural schematic diagram of static calibration system, Fig. 3 are that raster pattern is displaced school in vibration displacement transducer dwell calibration system shown in Fig. 2
The structural schematic diagram of quasi- device.
In this embodiment, a kind of vibration displacement sensor calibrating system, comprising: raster pattern displacement corrector 1,
Pedestal 6, gage button 3, holding frame 8, data collector 7 and computer equipment 10, wherein raster pattern displacement corrector 1 and holding frame 8
It is installed on pedestal 6.
Raster pattern displacement corrector 1 includes measuring staff 2-4, grating scale 2-5, piezoelectric element 2 and board 2-6, measuring staff 2-4 exposure
It is first end in the end of the outside of raster pattern displacement corrector 1, measuring staff 2-4 is placed in the inside of raster pattern displacement corrector 1
End is second end, and piezoelectric element 2 is set to the first end of measuring staff 2-4, and grating scale 2-5 is set to the second end of measuring staff 2-4, with
Conducting wire that voltage component is connected and the conducting wire being connected with grating scale 2-5 are connected with board 2-6, board 2-6 and calculate
Machine equipment 10 communicates connection；Measuring staff 2-4 can be moved along towards the direction close to or far from holding frame 8；Gage button 3 is installed on
The first end of measuring staff 2-4, and gage button 3 is electrically connected with piezoelectric element 2, gage button 3 is used for and is calibrated 5 phase of vibration displacement sensor
Contact；Be calibrated vibration displacement sensor 5 and be installed on holding frame, holding frame be set to pedestal 6 and holding frame and measuring staff 2-4 the
One end is oppositely arranged；The signal input part of data collector 7 with be calibrated vibration displacement sensor 5 and be electrically connected；Data are adopted
The signal output end of storage 7 is electrically connected with the computer equipment 10；Computer equipment 10 and the signal of data collector 7 are defeated
Outlet is electrically connected, meanwhile, computer equipment 10 is communicated with raster pattern displacement corrector 1 and is connect.
So set, vibration displacement sensor 5 will be calibrated when to being calibrated vibration displacement sensor 5 and calibrating
It is installed on holding frame 8, calculates equipment control measuring staff 2-4 and moved along towards the direction of holding frame 8, when being set to measuring staff 2-4's
The gage button 3 of first end is in contact with vibration displacement sensor 5 is calibrated, so that dynamic pressure electric device 2 triggers skip signal, computer
When equipment 10 receives the skip signal of piezoelectric element 2, it can show in the screen of computer equipment 10, at this time data collector
7 can acquire according to data are set for, and data-signal is transferred to computer equipment 10, and computer equipment 10 will receive
It is recorded from the data-signal of data collector 7, and by data-signal.According to the full amount for being calibrated vibration displacement sensor 5
Journey sets measurement point, and optical scale is used to measure the specific stroke of measuring staff 2-4, controlled by computer equipment 10, thus it is possible to vary
The stroke of measuring staff 2-4, so as to successively be measured measurement point, every time when measurement, data collector 7 can will be corresponding
Data are transmitted to computer equipment 10, and computer equipment 10 records corresponding data, and then computer equipment 10 is according to being recorded
Data by algorithm, the available zero error for being calibrated vibration displacement sensor 5, static sensitivity, static amplitude line
The data such as property degree, hysterisis error and amplitude repeatability.
Compared with prior art, pass through the row of the measuring staff 2-4 using the control raster pattern displacement corrector 1 of computer equipment 10
Journey and the stroke that measuring staff 2-4 is measured using optical scale, so as to be surveyed to the measurement point for being calibrated vibration displacement sensor 5
When measuring, and measuring every time, data collector 7 can be by the data transfer of acquisition to computer equipment 10, and computer is set
Standby 10 record corresponding data-signal, and input corresponding algorithm, computer equipment in computer equipment 10 in advance
10 calculate data according to algorithm, and the corresponding standard value for being calibrated vibration displacement sensor 5 can be obtained, thus, it can
To improve efficiency and calibration accuracy when calibrating to vibration displacement sensor.
It should be noted that in this embodiment, being carried out again to two ends of measuring staff 2-4 for ease of description
Name, wherein the end that measuring staff 2-4 is placed in the outside of raster pattern displacement corrector 1 is first end, and measuring staff 2-4 is placed in raster pattern
The end of the inside of displacement corrector 1 is second end, certainly, the naming method used is also not excluded for, to ordering again for measuring staff end
Name cannot function as limiting the foundation of protection scope.
It should also be noted that, in this embodiment, being installed on clamping due to being calibrated vibration displacement sensor 5
Frame 8, it is measuring staff 2-4 towards close to the side for being calibrated vibration displacement sensor 5 that measuring staff 2-4 is moved towards the direction close to clip
To movement, otherwise still.
It should be further noted that in this embodiment, gage button 3 is disc type gage button, vibrated according to being calibrated
The specific measurement material of displacement sensor 5 selects corresponding disc type gage button, certainly, is also not excluded for the gage button using other forms.
In further embodiment, raster pattern displacement corrector 1 is additionally provided with guide rail 2-3, and measuring staff 2-4 is along guide rail 2-3
It is moved towards the direction close to or far from holding frame 8.In this way, by setting guide rail 2-3, guarantee measuring staff 2-4 along guide rail 2-3 into
Row movement, it is ensured that the stability of measuring staff 2-4 during the motion, so as to improve the accuracy of measurement result.
It should be noted that in this embodiment, the concrete shape and size of guide rail 2-3 is shaken according to raster pattern
What the specific size of dynamic displacement sensor and the specific size of measuring staff were defined.
In addition, raster pattern displacement corrector 1 further includes the motor 2-1 and transmission 2-2 being connected with motor 2-1, motor
2-1 and computer equipment 10 communicate to connect, and transmission 2-2 is connected with the second end of measuring staff 2-4, and motor 2-1 is passed for driving
Dynamic secondary 2-2 rotation, transmission 2-2 drive measuring staff 2-4 to move along towards the direction close to or far from holding frame 8.In this way, transmission
The angular displacement of optical scale can be converted to displacement of the lines amount by secondary 2-2, so that raster pattern displacement corrector 1 is with grating scale 2-5 survey
The actual displacement amount obtained so can pass through computer when measuring as feedback signal transmission to computer equipment 10
The rotation direction of the control of equipment 10 motor 2-1 and unlatching or stopping, so as to control the direction of motion and row of measuring staff 2-4
Journey, and then accurately measuring staff 2-4 can be controlled, it can be further improved the accuracy of measurement result.
It should be noted that in this embodiment, when motor 2-1 is rotated forward, transmission 2-2 drives measuring staff 2-4 court
It is moved to the direction close to holding frame 8；When motor 2-1 is inverted, transmission 2-2 drive measuring staff 2-4 is directed away from the side of holding frame 8
To movement, certainly, also it is not excluded for controlling the direction of motion of measuring staff 2-4 using other control modes.
It should also be noted that, in this embodiment, transmission 2-2 is accurate lead screw transmission, so can be with
Guarantee the accuracy of measuring staff 2-4 stroke, certainly, is also not excluded for the transmission using other forms.
In addition, the first end of measuring staff 2-4 is provided with inside groove for the ease of installation, piezoelectric element 2 be set to inside groove and with pressure
The conducting wire that electric device 2 is connected is connected through measuring staff 2-4 and across the second end of measuring staff 2-4 with board 2-6.In this way, can be with
It avoids conducting wire from impacting the movement of measuring staff 2-4, guarantees the accuracy of measuring staff 2-4 movement, so as to improve measurement result
Accuracy.
In further scheme, it is calibrated vibration displacement sensor 5 for the ease of installation, pedestal 6, which is additionally provided with, leads
Track slot, holding frame 8 can be moved along guide-track groove direction or close to the direction of raster pattern displacement corrector 1；Holding frame 8 is also set up
There is retaining mechanism 4, retaining mechanism 4 is used to holding frame 8 being anchored on guide-track groove.So set, being calibrated vibration when needing to install
When displacement sensor 5, loosen retaining mechanism 4, and holding frame 8 is directed away from raster pattern displacement corrector 1 along guide-track groove
Direction is mobile, can so increase the distance between holding frame 8 and raster pattern displacement corrector 1, increases installation space, and being convenient for will
It is calibrated vibration displacement sensor 5 and is installed on holding frame 8, when after the installation is completed, by holding frame 8 along guide-track groove towards leaning on dipped beam
The direction of grating displacement corrector 1 moves, it is to be exercised in place after, lock retaining mechanism 4 so that holding frame 8 is anchored on guide-track groove,
It prevents from causing measurement result inaccurate due to the non-essential displacement of holding frame 8, thereby may be ensured that the accuracy of measurement result.
It should be noted that in this embodiment, in order to guarantee the stability of installation, being calibrated vibration displacement biography
Installation is fixed by corresponding fastener in sensor 5 and gage button 3, so, it is ensured that in measurement process, is calibrated vibration
The accuracy of the installation site of dynamic displacement sensor 5 and gage button 3.
It should also be noted that, in this embodiment, guide-track groove is dovetail groove, certainly, also it is not excluded for using it
The guide-track groove of his form.
In addition, pedestal 6 is additionally provided with multiple adjustment parts 11 in order to guarantee that pedestal 6 measuring is in horizontality,
Multiple adjustment parts 11 are placed in the bottom of pedestal 6.In this way, by adjusting adjustment part 11, it is ensured that pedestal 6 is in horizontal
State, to be further ensured that the accuracy of measurement result.
It should be noted that in this embodiment, adjustment part 11 is bolt, and the bottom of pedestal 6 is provided with multiple
For installing the threaded hole of bolt, it is placed in the length in threaded hole by adjusting bolt, i.e., changeable pedestal 6 and horizontal plane or survey
The distance between platform is measured, thereby may be ensured that pedestal 6 is located at horizontality, improve the accuracy of measurement result.Certainly, also not
It excludes using other adjustment parts, if mounting hole is arranged in the bottom of pedestal, adjustment part is type of tamper evidence, and type of tamper evidence one end is placed in peace
It fills in hole, the other end is in contact with horizontal plane or measuring table, by using the type of tamper evidence of different length, to guarantee that pedestal is in
Horizontality.
It should be noted that in this embodiment, for the setting of pedestal 6 there are six threaded hole, six threaded holes are uniform
Ground is distributed in the bottom of pedestal 6, and each threaded hole is mounted on corresponding bolt, certainly, in the feelings for guaranteeing 6 stationarity of pedestal
Under condition, also it is not excluded for that the threaded hole and bolt of other numbers is arranged.
Meanwhile a kind of calibration method of vibration displacement sensor calibrating system is additionally provided in this embodiment,
The calibration method of vibration displacement sensor calibrating system uses vibration displacement sensor calibrating system as described above, including as follows
Step:
Step 1: vibration displacement sensor will be calibrated by fastener 9 and be installed on holding frame 8, and gage button 3 is passed through into phase
The fastener answered is installed on the first end of measuring staff 2-4, when there is the skip signal of piezoelectric element 2 in machine equipment 10 to be calculated, gage button 3
It is installed in place, at this time resets the skip signal of piezoelectric element 2；
Step 2: computer equipment 10 sends signal to raster pattern displacement corrector 1, and raster pattern displacement corrector 1 receives
To after signal, motor 2-1 rotation, transmission 2-2 drives measuring staff 2-4 towards close to the direction for being calibrated vibration displacement sensor 5
Movement, so that gage button 3 is in contact with vibration displacement sensor 5 is calibrated, piezoelectric element 2 triggers skip signal, computer equipment
10 receive this skip signal, stop operating after motor 2-1 receives signal at this point, computer equipment 10 issues signal, from
And measuring staff 2-4 stop motion, data collector 7 measure the zero-bit output signal for being calibrated vibration displacement sensor 5 and by this zero
Position output signal is transmitted to computer equipment 10, while grating scale 2-5 reading resets；
Step 3: computer equipment 10 sends signal to raster pattern displacement corrector 1, and raster pattern displacement corrector 1 receives
To after signal, motor 2-1 rotation, transmission 2-2 drives measuring staff 2-4 to be directed away from the direction for being calibrated vibration displacement sensor 5
Movement, when the displacement that grating scale 2-5 measures measuring staff 2-4 is identical as the full scale for being calibrated vibration displacement, computer equipment 10
Signal is issued to motor 2-1, after motor 2-1 receives signal, measuring staff 2-4 stop motion, data collector 7, which is measured, is calibrated vibration
The Full-span output signal is simultaneously transmitted to computer equipment 10, the calculating by the Full-span output signal of dynamic displacement sensor 5
Machine equipment 10 is by calculating, and obtaining being calibrated the zero error of vibration displacement sensor 5, (zero-bit exports new number and Full-span output
The ratio between signal is zero error), complete zero error calibration；
Step 4: after zero error calibration to be done, multiple surveys are arranged according to the range for being calibrated vibration displacement sensor 5
Point is measured, by the control of computer equipment 10, changes the measurement distance of raster pattern displacement corrector 1, data collector 7 can be according to
The secondary output signal for obtaining each measurement point, computer equipment 10 receive and record the output signal of each measurement point and according to connecing
The output signal received is calculated, obtain being calibrated the static sensitivity of vibration displacement sensor 5, the static amplitude linearity,
Hysterisis error and amplitude repeatability.
Preferably, in step 4, including the upper limit value point and lower limit value point that are calibrated vibration displacement sensor 5,
11 measurement points are divided into according to by the range of school vibration displacement sensor, i.e. the movement travel of measuring staff 2-4 single is by school
The 10% of quasi- 5 full scale value of vibration displacement sensor is also not excluded for using other measurement methods certainly.
In addition, can be measured using the method that step 4 is repeated several times to reduce error, to complete 11 measurements
Point is measured as measurement circulation, can repeat to measure circulation three times, it is of course also possible to be used according to actual measurement situation
Other measurement methods.
It should be noted that in this embodiment, the measurement data position collected of data collector 7 is calibrated vibration
Output valve U of the dynamic displacement sensor 5 in measurement pointi, the data of optical scale are to be calibrated the moving distance of vibration displacement sensor 5
Li, computer equipment 10 receives relevant signal and carries out that corresponding measurement data result is calculated.
Each embodiment in this specification is described in a progressive manner, the highlights of each of the examples are with other
The difference of embodiment, the same or similar parts in each embodiment may refer to each other.
The foregoing description of the disclosed embodiments enables those skilled in the art to implement or use the present invention.
Various modifications to these embodiments will be readily apparent to those skilled in the art, as defined herein
General Principle can be realized in other embodiments without departing from the spirit or scope of the present invention.Therefore, of the invention
It is not intended to be limited to the embodiments shown herein, and is to fit to and the principles and novel features disclosed herein phase one
The widest scope of cause.
Claims (10)
1. a kind of vibration displacement transducer dwell calibration system characterized by comprising
Be installed on the raster pattern displacement corrector (1) of pedestal (6), the raster pattern displacement corrector (1) include measuring staff (2-4),
Grating scale (2-5), board (2-6), the measuring staff (2-4) are exposed to the end of the outside of the raster pattern displacement corrector (1)
For first end, the end that the measuring staff (2-4) is placed in the inside of the raster pattern displacement corrector (1) is second end, piezoelectricity member
Part (2) is set to the first end of the measuring staff (2-4), and the grating scale (2-5) is set to the second end of the measuring staff (2-4),
The conducting wire being connected with the piezoelectric element (2) and the conducting wire being connected with the grating scale (2-5) with the board (2-6)
It is connected；
For with the gage button (3) that is calibrated vibration displacement sensor (5) and is in contact, the gage button (3) is installed on the measuring staff (2-
4) first end, and the gage button (3) is electrically connected with the piezoelectric element (2)；
For installing the holding frame (8) for being calibrated vibration displacement sensor (5), the holding frame (8) is set to the pedestal (6)
And it is oppositely arranged with the first end of the measuring staff (2-4), and the measuring staff (2-4) can be along towards close to or far from the folder
Hold the direction movement of frame (8)；
The signal input part of data collector (7), the data collector (7) is used for and is calibrated vibration displacement sensor (5)
It is electrically connected；
Computer equipment (10), the computer equipment (10) and the signal output end of the data collector (7) are electrically connected,
Meanwhile the computer equipment (10) communicates with the displacement corrector and connect, the board (2-6) sets with the computer
Standby (10) communicate connection.
2. vibration displacement transducer dwell calibration system as described in claim 1, which is characterized in that the raster pattern is displaced school
Quasi- device (1) is additionally provided with guide rail (2-3), and the measuring staff (2-4) is along the guide rail (2-3) towards close to or far from the clamping
The direction of frame (8) moves.
3. vibration displacement transducer dwell calibration system as claimed in claim 2, which is characterized in that the raster pattern is displaced school
Quasi- device (1) further includes motor (2-1) and the transmission (2-2) being connected with the motor (2-1), the motor (2-1) and institute
Computer equipment (10) communication connection is stated, the transmission (2-2) is connected with the second end of the measuring staff (2-4), the electricity
For machine (2-1) for driving the transmission (2-2) to rotate, the transmission (2-2) drives the measuring staff (2-4) to lean on along direction
Close or remote from the direction movement of the holding frame (8).
4. vibration displacement transducer dwell calibration system as described in any one of claims 1 to 3, which is characterized in that the base
Seat (6) is additionally provided with guide-track groove, and the holding frame (8) can be along the guide-track groove direction or close to the displacement corrector
Direction movement；The holding frame (8) is additionally provided with retaining mechanism (4), and the retaining mechanism (4) is used for the holding frame (8)
It is anchored on the guide-track groove.
5. vibration displacement transducer dwell calibration system as claimed in claim 4, which is characterized in that the pedestal (6) also sets
It is equipped with multiple adjustment parts (11), multiple adjustment parts (11) are placed in the bottom of the pedestal (6).
6. vibration displacement transducer dwell calibration system as claimed in claim 5, which is characterized in that the measuring staff (2-4)
First end is provided with inside groove, the conducting wire that the piezoelectric element (2) is set to the inside groove and is connected with the piezoelectric element (2)
It is connected through the measuring staff (2-4) and across the second end of the measuring staff (2-4) with the board (2-6).
7. vibration displacement transducer dwell calibration system as described in claim 1, which is characterized in that the gage button (3) is disk
Formula gage button.
8. a kind of calibration method of vibration displacement transducer dwell calibration system, which is characterized in that the vibration displacement sensor
The calibration method of static calibration system uses vibration displacement transducer dwell as described in any one of claim 1 to 7 calibration system
System, includes the following steps:
Step 1: vibration displacement sensor will be calibrated and be installed on the holding frame (8), and the gage button (3) is installed on institute
The first end for stating measuring staff (2-4), it is described when the skip signal of the piezoelectric element (2) occur in the computer equipment (10)
Gage button (3) is installed in place, and the skip signal of the piezoelectric element (2) is resetted；
Step 2: computer equipment (10) the Xiang Suoshu raster pattern displacement corrector (1) sends signal, the raster pattern displacement
After calibrator (1) receives signal, the measuring staff (2-4) is towards close to the direction for being calibrated vibration displacement sensor (5)
Movement, so that the gage button (3) is in contact with vibration displacement sensor (5) is calibrated, piezoelectric element (2) the triggering jump letter
Number, the computer equipment (10) receives this skip signal, at this point, the raster pattern displacement corrector (1) receive it is described
The signal that computer equipment (10) issues, measuring staff (2-4) stop motion, the data collector (7), which is measured, is calibrated vibration
The zero-bit output signal is simultaneously transmitted to the computer equipment (10) by the zero-bit output signal of dynamic displacement sensor (5), simultaneously
Grating scale (2-5) reading resets；
Step 3: computer equipment (10) the Xiang Suoshu raster pattern displacement corrector (1) sends signal, the raster pattern displacement
After calibrator (1) receives signal, the measuring staff (2-4) is directed away from the direction for being calibrated vibration displacement sensor (5)
Movement, when the displacement that the grating scale (2-5) measures the measuring staff (2-4) is identical as the full scale for being calibrated vibration displacement,
The raster pattern displacement corrector (1) receives the signal from the computer equipment (10), and the measuring staff (2-4) stops fortune
Dynamic, the data collector (7) measures the Full-span output signal for being calibrated vibration displacement sensor (5) and the full scale is defeated
Signal is transmitted to computer equipment (10) out, and the computer equipment (10) obtains being calibrated vibration displacement sensing by calculating
The zero error of device (5) completes zero error calibration；
Step 4: after zero error calibration to be done, multiple measurements are arranged according to the range for being calibrated vibration displacement sensor (5)
Point changes the measurement distance of the raster pattern displacement corrector (1), the number by the control of the computer equipment (10)
The output signal of each measurement point can be successively obtained according to collector (7), the computer equipment (10) receives and records each
The output signal of measurement point is simultaneously calculated according to the data measured, and the static state spirit for being calibrated vibration displacement sensor (5) is obtained
Sensitivity, the static amplitude linearity, hysterisis error and amplitude repeatability.
9. the calibration method of vibration displacement transducer dwell calibration system as claimed in claim 8, which is characterized in that in step
In four, including the upper limit value point and lower limitation point that are calibrated vibration displacement sensor (5), passed according to vibration displacement is calibrated
The range of sensor (5) is divided into 11 measurement points.
10. the calibration method of vibration displacement transducer dwell calibration system as claimed in claim 8 or 9, which is characterized in that more
It is secondary to repeat step 4.
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| CN201510545567.1A CN106482685B (en) | 2015-08-31 | 2015-08-31 | Vibration displacement transducer dwell calibration system and its calibration method |
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| CN109282776A (en) * | 2018-10-19 | 2019-01-29 | 长江水利委员会长江科学院 | Tensile-line instrument automates caliberating device and its scaling method |
| CN114838650B (en) * | 2022-03-28 | 2024-04-09 | 北京航天控制仪器研究所 | Displacement sensor calibration device and method based on turntable |
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| CN2051732U (en) * | 1989-07-29 | 1990-01-24 | 黑龙江省林产工业研究所 | Band-saw displacement amplitude meter |
| SU1679179A2 (en) * | 1989-06-27 | 1991-09-23 | Харьковский филиал Центрального конструкторского бюро Союзэнергоремонта | Device for calibrating linear displacement meter |
| CN102927959A (en) * | 2012-08-02 | 2013-02-13 | 南京航空航天大学 | Automatic calibration device and calibration method for strain gauge |
| CN204188151U (en) * | 2014-11-28 | 2015-03-04 | 黑龙江省计量检定测试院 | Linear displacement transducer calibrating installation |
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- 2015-08-31 CN CN201510545567.1A patent/CN106482685B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU1679179A2 (en) * | 1989-06-27 | 1991-09-23 | Харьковский филиал Центрального конструкторского бюро Союзэнергоремонта | Device for calibrating linear displacement meter |
| CN2051732U (en) * | 1989-07-29 | 1990-01-24 | 黑龙江省林产工业研究所 | Band-saw displacement amplitude meter |
| CN102927959A (en) * | 2012-08-02 | 2013-02-13 | 南京航空航天大学 | Automatic calibration device and calibration method for strain gauge |
| CN204188151U (en) * | 2014-11-28 | 2015-03-04 | 黑龙江省计量检定测试院 | Linear displacement transducer calibrating installation |
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