CN110261645A - A kind of calibration system of ship accelerometer - Google Patents
A kind of calibration system of ship accelerometer Download PDFInfo
- Publication number
- CN110261645A CN110261645A CN201910577867.6A CN201910577867A CN110261645A CN 110261645 A CN110261645 A CN 110261645A CN 201910577867 A CN201910577867 A CN 201910577867A CN 110261645 A CN110261645 A CN 110261645A
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- Prior art keywords
- signal
- accelerometer
- speed response
- calibrated
- vibration
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- 238000005086 pumping Methods 0.000 claims abstract description 17
- 230000005540 biological transmission Effects 0.000 claims description 6
- 238000012360 testing method Methods 0.000 claims description 6
- 230000005284 excitation Effects 0.000 claims description 5
- 230000005520 electrodynamics Effects 0.000 claims description 3
- 239000012530 fluid Substances 0.000 claims description 3
- 238000009434 installation Methods 0.000 claims description 3
- 238000005259 measurement Methods 0.000 description 10
- 230000001133 acceleration Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000035945 sensitivity Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
- G01P21/00—Testing or calibrating of apparatus or devices covered by the preceding groups
Abstract
The embodiment of the invention provides a kind of calibration systems of ship accelerometer, comprising: controller is used to send control signal to the signal generator；Signal generator is used for according to the pumping signal under control signal output calibration frequency；Power amplifier is for receiving and amplifying the pumping signal；Vibration excitor is for generating constant vibration signal according to the pumping signal；Force snesor is used to transmit the vibration signal to Ship Structure；Standard radio accelerometer, be mounted on it is described be calibrated accelerometer side, First Speed response is generated according to vibration signal, and the First Speed response is sent in controller；It is calibrated accelerometer, for generating second speed response according to the vibration signal, and the second speed response is sent in the controller；Wherein, controller calibrates the calibration factor for being calibrated accelerometer according to First Speed response and second speed response.
Description
Technical field
The invention belongs to measurement and calibration technical field more particularly to a kind of calibration systems of ship accelerometer.
Background technique
In various fields, instrument has the performance state for characterizing monitored product, failure shape as important supervision equipment
The important function such as state.Therefore when instrument works online, the accuracy of logarithm acquisition is clearly required.Under normal conditions, right
Every kind of instrument all defines metering cycle, and generally requiring the metering cycle of instrument is 1 year.
For the instrument or portable instrument that use in laboratory, measurement and calibration is also more convenient, but right
When the instrument that is fixedly mounted on ship carries out measurement and calibration, needs to dismantle it, inspection, the processes such as reassembles, usually
It is more troublesome.Instrument that especially air-tightness is required, the instrument for being arranged in small space inconvenience dismounting, to reliability requirement
These instrument such as the high, instrument of one with line, are just more difficult to realize when carrying out measurement and calibration to it.
In practical engineering application, such instrument (such as accelerometer for monitoring hull self noise) is not often by metering
Cycle request carries out measurement and calibration in time, and measurement and calibration to such instrument choosing is carried out typically during repairing, is led
There is very big risk in the reliability and accuracy for causing such instrument to collect data.
Summary of the invention
In view of the problems of the existing technology, the embodiment of the invention provides a kind of calibration system of ship accelerometer,
For solve the prior art can not quickly and easily to be fixedly mounted on it is on ship, be difficult to the accelerometer instrument dismantled carry out
Measurement and calibration leads to the technical issues of being difficult to ensure the reliability and accuracy of accelerometer acquisition data.
The embodiment of the present invention provides a kind of calibration system of ship accelerometer, the system comprises:
Controller is connected with the input terminal of signal generator by signal wire, is controlled for sending to the signal generator
Signal processed；
Signal generator, the output end of the signal generator are connected with the input terminal of power amplifier by signal wire,
For according to the pumping signal under the control signal output calibration frequency；
Power amplifier, the output end of the power amplifier are connected by signal wire with the input terminal of vibration excitor, are used for
It receives and amplifies the pumping signal；
The output end of vibration excitor, the vibration excitor is connected with force snesor by signal wire, for being believed according to the excitation
Number generate constant vibration signal；
Force snesor, for transmitting the vibration signal to Ship Structure；
Standard radio accelerometer, be mounted on it is described be calibrated accelerometer side, generate the according to the vibration signal
One speed responsive value, and the First Speed response is sent in the controller by wireless transmission；
It is calibrated accelerometer, is connected with the input terminal of the controller by signal wire, for being believed according to the vibration
Number second speed response is generated, and the second speed response is sent in the controller；Wherein, the controller
The calibration factor for being calibrated accelerometer is carried out according to the First Speed response and the second speed response
Calibration.
In above scheme, the installation site of the vibration excitor need to meet the test signal-to-noise ratio for being calibrated accelerometer.
In above scheme, the test signal-to-noise ratio for being calibrated accelerometer is greater than 60dB.
In above scheme, the worst error of the standard radio accelerometer is calibrated accelerometer worst error to be described
1/4.
In above scheme, the standard radio accelerometer is specifically used for:
According to formula V1=FY1Determine the First Speed response V1；Wherein, the F is that the vibration signal is corresponding
Exciting force, the Y1For the vibration excitor to the first admittance of the standard radio accelerometer.
In above scheme, the accelerometer that is calibrated is specifically used for:
According to formula V2=FY2Determine the second speed response V2；Wherein, the F is that the vibration signal is corresponding
Exciting force, the Y2For the vibration excitor to second admittance for being calibrated accelerometer.
In above scheme, the controller is specifically used for:
Determine the difference between the First Speed response and the second speed response；
The calibration factor for being calibrated accelerometer is calibrated according to the difference, so that the First Speed is rung
It should be worth consistent with the second speed response.
In above scheme, the force snesor is fixed in the fixed link of the vibration excitor.
In above scheme, the vibration excitor includes: in electromagnetic actuator, Electrodynamic Vibrators and fluid pressure type vibration excitor
Any one.
In above scheme, wireless receiving module is integrated in the controller.
The embodiment of the invention provides a kind of calibration system of ship accelerometer, the system comprises: controller, with letter
The input terminal of number generator is connected by signal wire, for sending control signal to the signal generator；Signal generator, institute
The output end for stating signal generator is connected with the input terminal of power amplifier by signal wire, for defeated according to the control signal
Pumping signal under calibration frequency out；Power amplifier, the output end of the power amplifier and the input terminal of vibration excitor pass through
Signal wire is connected, for receiving and amplifying the pumping signal；Vibration excitor, output end and the force snesor of the vibration excitor pass through
Signal wire is connected, for generating constant vibration signal according to the pumping signal；Force snesor is used for the Ship Structure
Transmit the vibration signal；Standard radio accelerometer, be mounted on it is described be calibrated accelerometer side, according to vibration letter
Number generate First Speed response, and by the First Speed response by wireless transmission be sent in the controller；Quilt
Calibrating accolerometer is connected with the input terminal of the controller by signal wire, for generating second according to the vibration signal
Speed responsive value, and the second speed response is sent in the controller；Wherein, the controller is according to described
One speed responsive value and the second speed response calibrate the calibration factor for being calibrated accelerometer；In this way,
A perseverance is exported using controller, signal generator, power amplifier, vibration excitor, the force snesor installed in Ship Structure
Fixed power output, so that being calibrated accelerometer and standard radio accelerometer generates First Speed response and the second speed respectively
Response is spent, difference of the controller based on First Speed response and second speed response carries out school to second speed response
Standard just completes the calibration to calibrating accolerometer, thus so that second speed response is consistent with First Speed response
It is calibrated accelerometer without disassembly, can also quickly and easily realize the calibration to accelerometer is calibrated, it is ensured that is calibrated and adds
Speedometer acquires the reliability and accuracy of data at work；And standard radio accelerometer is used, is avoided at the scene
Complicated wiring.
Detailed description of the invention
Fig. 1 is the overall structure diagram of the calibration system of ship accelerometer provided in an embodiment of the present invention；
Fig. 2 is the signal flow schematic diagram of the calibration system of ship accelerometer provided in an embodiment of the present invention.
Specific embodiment
In order to solve the prior art can not quickly and easily to be fixedly mounted on it is on ship, be difficult to the accelerometer dismantled
Measurement and calibration is carried out, leads to the technical issues of being difficult to ensure the reliability and accuracy of accelerometer acquisition data, the present invention is real
It applies example and provides a kind of calibration system of ship accelerometer, the system comprises controllers, the input terminal with signal generator
It is connected by signal wire, for sending control signal to the signal generator；Signal generator, the signal generator it is defeated
Outlet is connected with the input terminal of power amplifier by signal wire, for according to swashing under the control signal output calibration frequency
Encourage signal；Power amplifier, the output end of the power amplifier is connected with the input terminal of vibration excitor by signal wire, for connecing
It receives and amplifies the pumping signal；The output end of vibration excitor, the vibration excitor is connected with force snesor by signal wire, and root is used for
Constant vibration signal is generated according to the pumping signal；Force snesor, for transmitting the vibration signal to the Ship Structure；
Standard radio accelerometer, be mounted on it is described be calibrated accelerometer side, First Speed is generated according to the vibration signal and is rung
It should be worth, and the First Speed response is sent in the controller by wireless transmission；It is calibrated accelerometer, with institute
It states the input terminal of controller to be connected by signal wire, for generating second speed response according to the vibration signal, and by institute
Second speed response is stated to be sent in the controller；Wherein, the controller is according to the First Speed response and institute
Second speed response is stated to calibrate the calibration factor for being calibrated accelerometer.
Technical solution of the present invention is described in further detail below by drawings and the specific embodiments.
The present embodiment provides a kind of calibration system of ship accelerometer, the system comprises: controller 1, signal occur
Device 2, vibration excitor 4, force snesor 5, standard radio accelerometer 6, is calibrated accelerometer 7 at power amplifier 3；Wherein, it controls
Device 1, power amplifier 3, vibration excitor 4, standard radio accelerometer 6, is calibrated accelerometer 7 and is all mounted on signal generator 2
The corresponding position of Ship Structure 8.
The output end of controller 1 is connected with the input terminal of signal generator 2 by signal wire, is used for signal generator 2
Send control signal.
The output end of signal generator 2 is connected with the input terminal of power amplifier 3 by signal wire, for being believed according to control
Number output calibration frequency under pumping signal；The pumping signal is electric signal.
The output end of power amplifier 3 is connected with the input terminal of vibration excitor by signal wire, for receiving and amplifying excitation
Signal；Vibration excitor 4 is mounted in Ship Structure, and the output end of vibration excitor 4 is connected with force snesor 5 by signal wire, is used for root
Constant vibration signal is generated according to pumping signal；The vibration signal is a constant exciting force.In practical application, vibration excitor 4
It can be any one in electromagnetic actuator, Electrodynamic Vibrators and fluid pressure type vibration excitor.
Here, the installation site of vibration excitor 4 need to meet the test signal-to-noise ratio for being calibrated accelerometer 7, be calibrated and add
The test signal-to-noise ratio of speedometer is greater than 60dB.
Force snesor 3 is mounted in the fixed link of vibration excitor 4, for transmitting vibration signal to Ship Structure.
Standard radio accelerometer 6 is mounted on the side for being calibrated accelerometer 7, close to accelerometer 7 is calibrated, works as mark
When quasi- radio acceleration meter receives vibration signal, for generating First Speed response according to vibration signal, and by described the
One speed responsive value is sent in the controller 1 by wireless transmission.Here, in order to guarantee that calibration accuracy, standard radio add
Speedometer 6 need to be calibrated before calibrating at the scene in laboratory, and the worst error of standard radio accelerometer 6 is described by school
The 1/4 of quasi- accelerometer worst error, alternatively, the maximum uncertainty of standard radio accelerometer 6 is calibrated acceleration to be described
Degree counts the 1/4 of maximum uncertainty of measurement.
Here, when standard radio accelerometer 6 receives vibration signal, it is specifically used for:
First Speed response is determined according to formula (1):
V1=FY1 (1)
In formula (1), V1For First Speed response；F is the corresponding exciting force of vibration signal, Y1For vibration excitor 4 to institute
State the first admittance of standard radio accelerometer 6.
It is calibrated accelerometer 7 to be connected with the input terminal of controller 1 by signal wire, for generating the according to vibration signal
Two speed responsive values, and the second speed response is sent in controller 1.
Here, when being calibrated accelerometer 7 and receiving vibration signal, it is specifically used for:
Second speed response is determined according to formula (2):
V2=FY2 (2)
In formula (2), V2For second speed response；F is the corresponding exciting force of vibration signal, Y2For vibration excitor 4 to quilt
Second admittance of calibrating accolerometer 7.
In practical application, being calibrated accelerometer 7 can be charge type accelerometer or piezo-electric type accelerometer.
It should be noted that it includes multiple for being calibrated accelerometer 7 in fact to be referring to Fig. 1, then correspondingly, standard
Radio acceleration meter 6 also includes multiple.
The controller 1 can be programmable logic controller (PLC) (PLC, Programmable Logic Controller),
First that is integrated with wireless receiving module in controller 1, therefore can both be sent by wireless receiving standard radio accelerometer 6
Speed responsive value can also receive the First Speed response for being calibrated the transmission of accelerometer 7 by wire signal.Work as controller
1 when receiving First Speed response and second speed response, can show First Speed response and second speed response
Value, and according to the First Speed response and the second speed response to be calibrated the calibration factor of accelerometer 7 into
Row calibration, specifically:
Determine the difference between First Speed response and second speed response；
The calibration factor for being calibrated accelerometer is calibrated according to difference, so that First Speed response and the
Two speed responsive values are consistent.In this way, being calibrated to being calibrated accelerometer 7.
The calibration system energy bring beneficial effect of ship accelerometer provided in an embodiment of the present invention is at least:
The embodiment of the invention provides a kind of calibration system of ship accelerometer, system includes: controller, is sent out with signal
The input terminal of raw device is connected by signal wire, for sending control signal to signal generator；Signal generator, signal generator
Output end be connected with the input terminal of power amplifier by signal wire, for according to control signal output calibration frequency under swash
Encourage signal；The output end of power amplifier is connected with the input terminal of vibration excitor by signal wire, for receiving and amplifying excitation letter
Number；The output end of vibration excitor is connected with force snesor by signal wire, for generating constant vibration signal according to pumping signal；
Force snesor is used to transmit the vibration signal to Ship Structure；Standard radio accelerometer is mounted on and described is calibrated acceleration
Degree meter side generates First Speed response according to the vibration signal, and by the First Speed response by wirelessly passing
It is defeated to be sent in the controller；It is calibrated accelerometer, is connected with the input terminal of the controller by signal wire, root is used for
Second speed response is generated according to the vibration signal, and the second speed response is sent in the controller；Its
In, the controller is according to the First Speed response and the second speed response to the accelerometer that is calibrated
Calibration factor is calibrated；In this way, using controller, signal generator, power amplifier, the exciting installed in Ship Structure
Device, force snesor export a constant power output, so that being calibrated accelerometer and standard radio accelerometer generates respectively
First Speed response and second speed response, difference of the controller based on First Speed response and second speed response
Second speed response is calibrated, so that second speed response is consistent with First Speed response, is just completed to school
The calibration of quasi- accelerometer, thus without disassembly be calibrated accelerometer, can also quickly and easily realize to be calibrated accelerate
The calibration of meter is spent, Lai Xiuzheng is calibrated the sensitivity of accelerometer, and the sensitivity control for the accelerometer being calibrated is being provided
In the range of, meet the requirements its measurement accuracy, it is ensured that be calibrated reliability and standard that accelerometer acquires data at work
True property；And standard radio accelerometer is used, complicated wiring at the scene is avoided, and then avoids the wiring in calibration complicated
Etc. engineering application problems.
The foregoing is only a preferred embodiment of the present invention, is not intended to limit the scope of the present invention, it is all
Made any modifications, equivalent replacements, and improvements etc. within the spirit and principles in the present invention, should be included in protection of the invention
Within the scope of.
Claims (10)
1. a kind of calibration system of ship accelerometer, which is characterized in that the system comprises:
Controller is connected with the input terminal of signal generator by signal wire, for sending control letter to the signal generator
Number；
Signal generator, the output end of the signal generator are connected by signal wire with the input terminal of power amplifier, are used for
According to the pumping signal under the control signal output calibration frequency；
Power amplifier, the output end of the power amplifier is connected with the input terminal of vibration excitor by signal wire, for receiving
And amplify the pumping signal；
The output end of vibration excitor, the vibration excitor is connected with force snesor by signal wire, for raw according to the pumping signal
At constant vibration signal；
Force snesor, for transmitting the vibration signal to Ship Structure；
Standard radio accelerometer, be mounted on it is described be calibrated accelerometer side, the first speed is generated according to the vibration signal
Response is spent, and the First Speed response is sent in the controller by wireless transmission；
It is calibrated accelerometer, is connected with the input terminal of the controller by signal wire, for being produced according to the vibration signal
Raw second speed response, and the second speed response is sent in the controller；Wherein, the controller according to
The First Speed response and the second speed response calibrate the calibration factor for being calibrated accelerometer.
2. the system as claimed in claim 1, which is characterized in that the installation site of the vibration excitor need to meet described be calibrated and add
The test signal-to-noise ratio of speedometer.
3. system as claimed in claim 2, which is characterized in that the test signal-to-noise ratio for being calibrated accelerometer is greater than
60dB。
4. the system as claimed in claim 1, which is characterized in that the worst error of the standard radio accelerometer is the quilt
The 1/4 of calibrating accolerometer worst error.
5. the system as claimed in claim 1, which is characterized in that the standard radio accelerometer is specifically used for:
According to formula V1=FY1Determine the First Speed response V1；Wherein, the F is the corresponding excitation of the vibration signal
Power, the Y1For the vibration excitor to the first admittance of the standard radio accelerometer.
6. the system as claimed in claim 1, which is characterized in that the accelerometer that is calibrated is specifically used for:
According to formula V2=FY2Determine the second speed response V2；Wherein, the F is the corresponding excitation of the vibration signal
Power, the Y2For the vibration excitor to second admittance for being calibrated accelerometer.
7. the system as claimed in claim 1, which is characterized in that the controller is specifically used for:
Determine the difference between the First Speed response and the second speed response；
The calibration factor for being calibrated accelerometer is calibrated according to the difference, so that the First Speed response
It is consistent with the second speed response.
8. the system as claimed in claim 1, which is characterized in that the force snesor is fixed on the fixed link of the vibration excitor
On.
9. the system as claimed in claim 1, which is characterized in that the vibration excitor includes: electromagnetic actuator, electrodynamic type exciting
Any one in device and fluid pressure type vibration excitor.
10. the system as claimed in claim 1, which is characterized in that be integrated with wireless receiving module in the controller.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910577867.6A CN110261645A (en) | 2019-06-28 | 2019-06-28 | A kind of calibration system of ship accelerometer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910577867.6A CN110261645A (en) | 2019-06-28 | 2019-06-28 | A kind of calibration system of ship accelerometer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110261645A true CN110261645A (en) | 2019-09-20 |
Family
ID=67923162
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910577867.6A Pending CN110261645A (en) | 2019-06-28 | 2019-06-28 | A kind of calibration system of ship accelerometer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110261645A (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203798520U (en) * | 2014-04-30 | 2014-08-27 | 上海冠图防雷科技有限公司 | Ship structure vibration measuring instrument |
| CN106124803A (en) * | 2016-06-13 | 2016-11-16 | 中国地质大学（武汉） | A kind of calibration system of optical fiber acceleration transducer |
| CN210109138U (en) * | 2019-06-28 | 2020-02-21 | 中国船舶重工集团公司第七一九研究所 | Calibration system of ship accelerometer |
-
2019
- 2019-06-28 CN CN201910577867.6A patent/CN110261645A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203798520U (en) * | 2014-04-30 | 2014-08-27 | 上海冠图防雷科技有限公司 | Ship structure vibration measuring instrument |
| CN106124803A (en) * | 2016-06-13 | 2016-11-16 | 中国地质大学（武汉） | A kind of calibration system of optical fiber acceleration transducer |
| CN210109138U (en) * | 2019-06-28 | 2020-02-21 | 中国船舶重工集团公司第七一九研究所 | Calibration system of ship accelerometer |
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