CN116519126A - Vibration sensor calibration device and method - Google Patents
Vibration sensor calibration device and method Download PDFInfo
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- CN116519126A CN116519126A CN202310472454.8A CN202310472454A CN116519126A CN 116519126 A CN116519126 A CN 116519126A CN 202310472454 A CN202310472454 A CN 202310472454A CN 116519126 A CN116519126 A CN 116519126A
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- 238000000034 method Methods 0.000 title claims abstract description 17
- 230000005284 excitation Effects 0.000 claims abstract description 40
- 238000012795 verification Methods 0.000 claims description 42
- 238000012360 testing method Methods 0.000 claims description 10
- 230000005540 biological transmission Effects 0.000 claims description 5
- 229910052782 aluminium Inorganic materials 0.000 claims description 4
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 4
- 238000005259 measurement Methods 0.000 claims description 4
- 230000001105 regulatory effect Effects 0.000 claims description 3
- 230000001360 synchronised effect Effects 0.000 claims description 3
- 238000009434 installation Methods 0.000 description 12
- 230000003068 static effect Effects 0.000 description 3
- 230000006978 adaptation Effects 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012806 monitoring device Methods 0.000 description 2
- 238000012544 monitoring process Methods 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000005684 electric field Effects 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 239000003550 marker Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01H—MEASUREMENT OF MECHANICAL VIBRATIONS OR ULTRASONIC, SONIC OR INFRASONIC WAVES
- G01H17/00—Measuring mechanical vibrations or ultrasonic, sonic or infrasonic waves, not provided for in the preceding groups
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Measurement Of Mechanical Vibrations Or Ultrasonic Waves (AREA)
Abstract
The invention discloses a vibration sensor calibration device and a method, which belong to the technical field of vibration sensor calibration, and comprise a calibration device host, a calibration comparison sensor and a standard background plate, wherein a vibration excitation source of the calibration device host is arranged at the center of the standard background plate, the calibration comparison sensor and the calibrated vibration sensor are both arranged on the standard background plate and have the same distance with the vibration excitation source, and the calibration comparison sensor and the calibrated vibration sensor are both connected with a collection end signal of the calibration device host; the standard background plate is provided with an annular mounting groove, and the checking comparison sensor and the checked vibration sensor are arranged in the annular mounting groove and fixed by a fixing piece. The vibration sensor calibration device can flexibly adjust the number and the positions of the vibration sensors to be tested, is convenient to fix, utilizes the standard adjustable vibration source to send out signals, and realizes accurate calibration of the vibration sensor by synchronously measuring and comparing the calibration comparison sensor with the vibration sensor to be calibrated.
Description
Technical Field
The invention belongs to the technical field of vibration sensor calibration, and particularly relates to a vibration sensor calibration device and method.
Background
At present, large-scale power equipment such as transformers (high resistance) in a power system are widely used as vibration sensors for monitoring abnormal vibration of the equipment caused by faults such as loosening of internal bolts and partial discharge, and play an important role in early warning of defects of the power equipment in operation. Vibration type on-line monitoring device in operation receives electromagnetic environment influences such as electrified equipment high electric field, high magnetic field in the long-term operation, and on-line monitoring internal electronic component performance probably takes place ageing or degradation, leads to measurement accuracy to deteriorate, influences the accurate judgement of power equipment running state in turn, can not in time discover after appearing great hidden danger, need regularly carry out the check-up to on-line monitoring device. However, at present, a more perfect verification method for the vibration sensor does not exist. Therefore, a laboratory verification method for the vibration sensor needs to be designed, the uniformity of the test environment is ensured, a standard adjustable vibration source is utilized to send out signals, and the vibration sensor is synchronously measured and compared with the vibration sensor to be verified through the verification comparison sensor, so that the laboratory verification for the vibration sensor is realized, and the laboratory verification method has great popularization value.
Patent document publication No. CN 208488164U discloses a multi-type vibration sensor comparing device comprising a fixed disk, a vibration checking device, a data acquisition device and a computer; the vibration checking device is connected with the plurality of vibration sensors to be tested and is used for outputting control signals according to the control instructions to control the vibration of the vibration sensors to be tested; the fixed disc comprises a plurality of sensor mounting grooves, and the sensor mounting grooves are used for mounting a sensor to be detected; the data acquisition device is respectively connected with the plurality of vibration sensors to be detected and is used for acquiring vibration response signals generated by the vibration sensors when the plurality of vibration sensors vibrate; the computer is respectively connected with the data acquisition device and the vibration verification device and is used for acquiring the vibration response signals and outputting control instructions to the vibration verification device. In this patent document, the vibration sensor is fixed by being screwed into the sensor mounting groove, however, most vibration sensors are not provided with a screw thread, and therefore, the use range of the comparison device is small, and the flexibility is poor.
Patent document with publication number of CN 108981893A discloses a dynamic and static characteristic checking bracket and a checking method of an electric vortex sensor, and particularly realizes dynamic and static checking work of the electric vortex sensor on a vibration calibration test bed at one time in the checking process of the electric vortex sensor. The invention comprises a base, a stand column, a cross beam, a sliding seat, a clamp, a dial indicator, an eddy current sensor, a voltage display and a cable, wherein the stand column is arranged on the base, the cross beam is arranged on the stand column in a sliding manner, the sliding seat is arranged on the cross beam in a sliding manner, the dial indicator is arranged on the sliding seat, the clamp is arranged on the dial indicator, the eddy current sensor is arranged on the clamp, and the eddy current sensor is connected with the voltage display through the cable. The vibration sensor calibration test bed can meet the requirements that calibration work is carried out on the eddy current sensors by different types of vibration sensor calibration test beds, is convenient to use, and realizes the calibration work of dynamic and static characteristics of a plurality of eddy current sensors; the fixing device is suitable for fixing the eddy current sensors with different diameters. However, the invention can only check one vibration sensor at a time, and has low efficiency.
Disclosure of Invention
In view of the defects in the prior art, the vibration sensor verification device and the vibration sensor verification method provided by the invention not only can flexibly adjust the number and the positions of the vibration sensors to be tested and conveniently fix the vibration sensors, but also can ensure the uniformity of a test environment, send out signals by using a standard adjustable vibration source, and realize accurate verification of the vibration sensor by synchronously measuring and comparing the verification comparison sensor with the vibration sensor to be verified.
In order to solve the technical problems, the invention adopts the following technical scheme: the vibration sensor calibration device comprises a calibration device host, a calibration comparison sensor and a standard background plate, wherein a vibration excitation source of the calibration device host is arranged at the center of the standard background plate, the calibration comparison sensor and the calibrated vibration sensor are both arranged on the standard background plate and have the same distance with the vibration excitation source, and the calibration comparison sensor and the calibrated vibration sensor are both in signal connection with a collection end of the calibration device host;
the vibration excitation device is characterized in that an annular mounting groove is formed in the standard background plate, the circle center of the annular mounting groove is provided with a vibration excitation source, the outer side of the annular mounting groove is provided with a plurality of fixing pieces, and the checking comparison sensor and the checked vibration sensor are arranged in the annular mounting groove and are respectively fixed by the fixing pieces.
Further, the standard background plate is an aluminum plate with uniform thickness.
Further, a plurality of screw holes are uniformly formed in the periphery of the annular mounting groove, the fixing piece is a bolt, and the bolt is in threaded connection with the screw holes.
Further, a plurality of annular installation sleeves are movably arranged in the annular installation groove, screw holes are also formed in the side face of the annular installation sleeve, the checking comparison sensor and the checked vibration sensor are placed in the annular installation sleeve, and the bolts sequentially penetrate through the annular installation groove and the annular installation sleeve to be fixed.
A vibration sensor verification method comprising the steps of:
s1: the vibration excitation source of the calibration device host is arranged at the center of the standard background plate, so that the uniformity of vibration characteristics of the vibration excitation signal sent by the calibration device host in the whole transmission range of the standard background plate is ensured;
s2: symmetrically arranging the checking comparison sensor and the checked vibration sensor by taking a vibration excitation source as a center point, and ensuring that the testing environments of the checking comparison sensor and the checked vibration sensor are consistent;
s3: and the vibration excitation signals of the vibration excitation source are regulated, the measured values of the verification comparison sensor and the vibration sensor to be verified are recorded, and the vibration sensor is verified by synchronous measurement comparison of the verification comparison sensor and the vibration sensor to be verified.
Compared with the prior art, the invention has the following beneficial effects:
1. according to the vibration sensor calibration device, the annular mounting groove is formed in the standard background plate, the vibration excitation source of the calibration device host is located at the center of the annular mounting groove, the calibration comparison sensor and the vibration sensor to be calibrated are arranged in the annular mounting groove and are respectively fixed by the fixing piece, and due to the structural design, the distances among the calibration comparison sensor, the vibration sensor to be calibrated and the vibration excitation source are kept consistent, the calibration accuracy is guaranteed, the number and the positions of the vibration sensors to be calibrated can be adjusted at will, the installation flexibility is high, and the calibration efficiency is improved.
2. The invention has the structural design that a plurality of annular mounting sleeves are movably arranged in the annular mounting groove, screw holes are also arranged on the side surfaces of the annular mounting sleeves, the inspection comparison sensor and the vibration sensor to be inspected are placed in the annular mounting sleeves, and bolts sequentially penetrate through the annular mounting groove and the annular mounting sleeves to fix the vibration sensor.
3. According to the vibration sensor verification method, the uniformity of a test environment is realized through the standard background plate, the standard adjustable vibration source is used for sending out signals, and the vibration sensor is synchronously measured and compared with the vibration sensor to be verified through the verification comparison sensor, so that laboratory verification of the vibration sensor is realized.
Drawings
FIG. 1 is a schematic diagram of the operation of embodiment 1 of the present invention;
FIG. 2 is a top view of embodiment 2 of the present invention;
FIG. 3 is a front view of embodiment 3 of the present invention;
FIG. 4 is a top view of embodiment 3 of the present invention;
in the figure, 1-calibration device host computer, 2-calibration contrast sensor, 3-standard background board, 4-vibration excitation source, 5-vibration sensor to be calibrated, 6-annular mounting groove, 7-bolt, 8-annular installation cover, 9-bottom plate, 10-bracing piece, 11-annular frame, 12-buckle.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention more clear, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. It will be apparent that the described embodiments are some, but not all, embodiments of the invention. All other embodiments, which are obtained by a person skilled in the art based on the described embodiments of the invention, fall within the scope of protection of the invention.
Example 1
The embodiment of the invention provides a laboratory verification method for a vibration sensor, which comprises the steps of firstly installing a vibration excitation source of a main machine of a verification device at a position which is as centered as possible in a standard background plate, ensuring uniformity of vibration characteristics of a vibration excitation signal sent by the main machine of the verification device in a transmission range of the whole standard background plate as much as possible, and then symmetrically arranging a verification comparison sensor and a vibration sensor to be verified by taking the vibration excitation source as a center point, and ensuring that test environments of the verification comparison sensor and the vibration sensor to be verified are as consistent as possible. For convenience, the arrangement points of the vibration excitation source, the calibration comparison sensor and the calibrated vibration sensor can be marked on the standard background plate in advance by using a marker pen. And the laboratory verification of the vibration sensor is realized by adjusting the vibration excitation signal of the vibration excitation source, recording and comparing the measured values of the verification comparison sensor and the vibration sensor to be verified.
The standard background plate is an aluminum plate which is uniform in material processing (no air gap, crack or other metal impurities exist in the interior) and uniform in size and thickness, and the transmission characteristics of the vibration excitation signal sent by the calibration device host machine in the whole standard background plate are ensured to be consistent as much as possible.
As shown in fig. 1, the basic principle of the vibration sensor verification method is that the uniformity of a test environment is realized through a standard background plate, then a standard adjustable vibration source is utilized to send out a signal, and the vibration sensor is synchronously measured and compared with a vibration sensor to be verified through a verification comparison sensor, so that the laboratory verification of the vibration sensor is realized.
Example 2
As shown in fig. 2, the vibration sensor calibration device comprises a calibration device host 1, a calibration comparison sensor 2 and a standard background plate 3, wherein a vibration excitation source 4 of the calibration device host 1 is arranged at the center position of the standard background plate 3, the calibration comparison sensor 2 and a calibrated vibration sensor 5 are both arranged on the standard background plate 3 and have the same distance with the vibration excitation source 4, and the calibration comparison sensor 2 and the calibrated vibration sensor 5 are both in signal connection with a collection end of the calibration device host 1;
the standard background plate 3 is provided with an annular mounting groove 6, the circle center of the annular mounting groove 6 is provided with a vibration excitation source 4, the outer side of the annular mounting groove 6 is provided with a plurality of fixing pieces, and the checking comparison sensor 2 and the checked vibration sensor 5 are arranged in the annular mounting groove 6 and are respectively fixed by the fixing pieces.
The standard background plate 3 is an aluminum plate with uniform thickness.
A plurality of screw holes are uniformly formed in the periphery of the annular mounting groove 6, the fixing piece is a bolt 7, and the bolt 7 is in threaded connection with the screw holes; the annular mounting groove 6 is internally and movably provided with a plurality of annular mounting sleeves 8, the side surface of each annular mounting sleeve 8 is also provided with a screw hole, the checking comparison sensor 2 and the checked vibration sensor 5 are placed in the annular mounting sleeves 8, and the bolts 7 sequentially penetrate through the annular mounting groove 6 and the annular mounting sleeves 8 to be fixed.
The vibration sensor verification device provided by the embodiment of the invention comprises the following verification methods:
s1: the vibration excitation source of the calibration device host is arranged at the center of the standard background plate, so that the uniformity of vibration characteristics of the vibration excitation signal sent by the calibration device host in the whole transmission range of the standard background plate is ensured;
s2: the method comprises the steps that a checking comparison sensor and a checked vibration sensor are installed in different annular installation sleeves in the annular installation groove, and the sensors are fixed by sequentially penetrating through the annular installation groove and the annular installation sleeve through bolts;
s3: and the vibration excitation signals of the vibration excitation source are regulated, the measured values of the verification comparison sensor and the vibration sensor to be verified are recorded, and the vibration sensor is verified by synchronous measurement comparison of the verification comparison sensor and the vibration sensor to be verified.
According to the vibration sensor verification device provided by the embodiment of the invention, the annular mounting groove is formed in the standard background plate, the vibration excitation source is arranged at the center of the circle, when the verification comparison sensor and the vibration sensor to be verified are mounted on the annular mounting groove, the distances from the two vibration excitation sources to the vibration excitation source are ensured to be equal, and a plurality of vibration sensors to be verified can be mounted, so that the vibration sensors can be verified simultaneously, and the verification efficiency is improved.
Example 3
As shown in fig. 3 to 4, the vibration sensor verification device of the embodiment of the present invention is further improved on the basis of embodiment 2, which is different from embodiment 2 in that:
still include bottom plate 9 and wire support frame, standard background board 3 is fixed to be set up on the bottom plate 9, the wire support frame sets up on the bottom plate 9, and be located standard background board 3 outside, the wire support frame includes bracing piece 10 and annular frame 11, fixed setting on the bracing piece 10 annular frame 11, annular frame 11 is located standard background board 3 directly over, slide on the annular frame 11 and set up a plurality of buckles 12, the wire of check-up pair sensor 2 and by check-up vibration sensor 5 is blocked respectively and is fixed in buckle 12 to can slide around annular frame 11.
According to the vibration sensor calibration device disclosed by the embodiment of the invention, the wire support frame is arranged above the standard background plate, so that wires of the calibration comparison sensor and the calibrated vibration sensor are upwards arranged, more wires are prevented from falling on the standard background plate and influencing the calibration result, and the wires slide along the annular frame through the buckle, so that the wire arrangement is neat, the flexibility is high, and the device can adapt to the position arrangement of a plurality of calibrated vibration sensors.
While the foregoing is directed to the preferred embodiments of the present invention, it will be appreciated by those skilled in the art that various modifications and adaptations can be made without departing from the principles of the present invention, and such modifications and adaptations are intended to be comprehended within the scope of the present invention.
Claims (5)
1. A vibration sensor verification device, characterized in that: the device comprises a calibration device host, a calibration comparison sensor and a standard background plate, wherein a vibration excitation source of the calibration device host is arranged at the center of the standard background plate, the calibration comparison sensor and the vibration sensor to be calibrated are both arranged on the standard background plate, the distances between the calibration comparison sensor and the vibration excitation source are equal, and the calibration comparison sensor and the vibration sensor to be calibrated are both in signal connection with a collecting end of the calibration device host;
the vibration excitation device is characterized in that an annular mounting groove is formed in the standard background plate, the circle center of the annular mounting groove is provided with a vibration excitation source, the outer side of the annular mounting groove is provided with a plurality of fixing pieces, and the checking comparison sensor and the checked vibration sensor are arranged in the annular mounting groove and are respectively fixed by the fixing pieces.
2. The vibration sensor verification device of claim 1, wherein: the standard background plate is an aluminum plate with uniform thickness.
3. The vibration sensor verification device of claim 1, wherein: the annular mounting groove is characterized in that a plurality of screw holes are uniformly formed in the periphery of the annular mounting groove, the fixing piece is a bolt, and the bolt is in threaded connection with the screw holes.
4. A vibration sensor verification apparatus as claimed in claim 3, wherein: the annular mounting groove is internally and movably provided with a plurality of annular mounting sleeves, the side surfaces of the annular mounting sleeves are also provided with screw holes, the checking comparison sensor and the checked vibration sensor are placed in the annular mounting sleeves, and the bolts sequentially penetrate through the annular mounting groove and the annular mounting sleeves to be fixed.
5. A vibration sensor verification method, comprising the steps of:
s1: the vibration excitation source of the calibration device host is arranged at the center of the standard background plate, so that the uniformity of vibration characteristics of the vibration excitation signal sent by the calibration device host in the whole transmission range of the standard background plate is ensured;
s2: symmetrically arranging the checking comparison sensor and the checked vibration sensor by taking a vibration excitation source as a center point, and ensuring that the testing environments of the checking comparison sensor and the checked vibration sensor are consistent;
s3: and the vibration excitation signals of the vibration excitation source are regulated, the measured values of the verification comparison sensor and the vibration sensor to be verified are recorded, and the vibration sensor is verified by synchronous measurement comparison of the verification comparison sensor and the vibration sensor to be verified.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310472454.8A CN116519126A (en) | 2023-04-27 | 2023-04-27 | Vibration sensor calibration device and method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310472454.8A CN116519126A (en) | 2023-04-27 | 2023-04-27 | Vibration sensor calibration device and method |
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| Publication Number | Publication Date |
|---|---|
| CN116519126A true CN116519126A (en) | 2023-08-01 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310472454.8A Pending CN116519126A (en) | 2023-04-27 | 2023-04-27 | Vibration sensor calibration device and method |
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| CN (1) | CN116519126A (en) |
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- 2023-04-27 CN CN202310472454.8A patent/CN116519126A/en active Pending
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Inventor after: Guo Lei Inventor after: Zhan Zhenyu Inventor after: Xin Weifeng Inventor after: Yang Zhifei Inventor after: Lu Yiwei Inventor after: Ma Yunrui Inventor after: Zhang Yupeng Inventor after: Wang Wei Inventor after: Hu Runge Inventor after: Wang Xiaohui Inventor after: Liu Furong Inventor after: Wang Jingbao Inventor after: Ding Guojun Inventor after: Zhu Hua Inventor after: Dong Manling Inventor before: Guo Lei Inventor before: Zhan Zhenyu Inventor before: Xin Weifeng Inventor before: Yang Zhifei Inventor before: Lu Yiwei Inventor before: Ma Yunrui Inventor before: Zhang Yupeng Inventor before: Wang Wei Inventor before: Hu Runge Inventor before: Wang Xiaohui Inventor before: Liu Furong Inventor before: Wang Jingbao Inventor before: Ding Guojun Inventor before: Zhu Hua Inventor before: Dong Manling |