CN205176056U - Built -in acceleration sensor who has alignment coil is from calibration device - Google Patents
Built -in acceleration sensor who has alignment coil is from calibration device Download PDFInfo
- Publication number
- CN205176056U CN205176056U CN201520896148.8U CN201520896148U CN205176056U CN 205176056 U CN205176056 U CN 205176056U CN 201520896148 U CN201520896148 U CN 201520896148U CN 205176056 U CN205176056 U CN 205176056U
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- acceleration transducer
- alignment coil
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- sensor
- acceleration sensor
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Abstract
The utility model discloses a built -in acceleration sensor who has alignment coil is from calibration device for mark acceleration sensor, acceleration sensor is built -in to have the alignment coil, and it includes: sensor leveling platform, standard signal generator, digital voltmeter and control computer, wherein: sensor leveling platform is the horizontality, and acceleration sensor sets up at sensor leveling bench, standard signal generator's input and control computer are connected to the sine wave signal of amplitude and settlement frequency is set for in output under the control of control computer, and standard signal generator's output and the alignment coil among the acceleration sensor are connected, digital voltmeter's input is connected with acceleration sensor's signal output part, and digital voltmeter's output and control computer are connected. The utility model discloses high, the convenient operation of simple structure, accuracy and using can improve greatly and carry out the speed and the efficiency of maring to acceleration sensor.
Description
Technical field
The utility model relates to a kind of acceleration transducer self-calibration device, in particular to a kind of device demarcated the acceleration transducer being built-in with alignment coil.
Background technology
The acceleration transducer being applied to vibration survey being built-in with alignment coil (self-calibration coil) has the developing history in more than 30 years, and it can conveniently be demarcated the amplitude versus frequency characte of sensor, sensitivity, the linearity and calibrate.The ultralow frequency characteristic of general sensor, the linearity of Larger Dynamic cannot be demarcated on a vibration table, and the acceleration transducer being built-in with alignment coil then can be demarcated the ultralow frequency characteristic of sensor, the linearity of Larger Dynamic easily.As in the test of vibration transducer low frequency patulous research, the acceleration transducer being built-in with alignment coil can complete the self-calibration of 200 seconds ultralow frequency characteristics in the short time.The linearity with high-resolution microvibration measuring sensor can utilize alignment coil to have demarcated in the cavern that ground unrest is little.For seismometer, the engineering vibration measurement sensor of long-term work, the scene can installed at sensor by built-in alignment coil completes the demarcation to sensor, has important actual application value.
At present, employing shaking table is calibrated the acceleration transducer being built-in with alignment coil and self-calibration calibration usually.Adopt shaking table to need experimental facilities and the experimental site of specialty when calibrating, and have higher requirement to experimental situation, the method is applicable to carry out close adjustment to parameters such as the sensitivity of sensor.Method for self-calibrating conventional is at present the alignment coil sine wave signal that signal source generates being input to sensor, then survey sensor output voltage, thus demarcates sensor.In calibration process, need constantly sinusoidal magnitude and the frequency of artificial adjustment input, when the voltage that survey sensor exports, artificial reading is difficult to the accuracy ensureing to read, thus produces larger error.In addition, after the data that calibration process obtains need hand-kept, arrangement and calculating, sensor characteristic could be generated and demarcate report, being difficult to fast, efficiently sensor being demarcated.
Utility model content
The utility model provides a kind of acceleration transducer self-calibration device being built-in with alignment coil, for demarcating acceleration transducer.
For achieving the above object, the utility model provides a kind of acceleration transducer self-calibration device being built-in with alignment coil, described acceleration transducer is built-in with alignment coil, and it comprises: sensor leveling platform, standard signal generator, digital voltmeter and control microcomputer, wherein:
Described sensor leveling platform is the level of state, and described acceleration transducer is arranged on described sensor leveling platform;
The input end of described standard signal generator is connected with described control microcomputer, to export the sine wave signal of setting amplitude and setpoint frequency under the control of described control microcomputer, the output terminal of described standard signal generator is connected with the alignment coil in described acceleration transducer;
The input end of described digital voltmeter is connected with the signal output part of described acceleration transducer, and the output terminal of described digital voltmeter is connected with described control microcomputer.
In an embodiment of the present utility model, described control microcomputer is connected by RS2332 interface with described standard signal generator and/or described digital voltmeter.
In an embodiment of the present utility model, described acceleration transducer is installed on fixed position but not on described sensor leveling platform.
The utility model structure is simple, degree of accuracy is high, handled easily and use, greatly can improve the speed and efficiency of demarcating acceleration transducer.
Accompanying drawing explanation
In order to be illustrated more clearly in the utility model embodiment or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is only embodiments more of the present utility model, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
The structural representation being built-in with the acceleration transducer self-calibration device of alignment coil that Fig. 1 provides for the utility model.
Description of reference numerals: 1-sensor leveling platform; 2-standard signal generator; 3-digital voltmeter; 4-control microcomputer; 5-acceleration transducer.
Embodiment
Below in conjunction with the accompanying drawing in the utility model embodiment, be clearly and completely described the technical scheme in the utility model embodiment, obviously, described embodiment is only the utility model part embodiment, instead of whole embodiments.Based on the embodiment in the utility model, those of ordinary skill in the art are not paying the every other embodiment obtained under creative work prerequisite, all belong to the scope of the utility model protection.
The structural representation being built-in with the acceleration transducer self-calibration device of alignment coil that Fig. 1 provides for the utility model, as shown in the figure, the acceleration transducer self-calibration device of what the utility model provided be built-in with alignment coil comprises: sensor leveling platform 1, standard signal generator 2, digital voltmeter 3 and control microcomputer 4, wherein:
Sensor leveling platform 1 is the level of state, when sensor leveling platform 1 is not the level of state, level can be adjusted to by the air level on sensor leveling platform 1, be arranged on sensor leveling platform by the acceleration transducer 5 demarcated, to ensure the sensitive axes level in acceleration transducer 5;
The input end of standard signal generator 2 is connected with control microcomputer 4, to export the sine wave signal of setting amplitude and setpoint frequency under the control of control microcomputer 4, the output terminal of standard signal generator 2 is connected with the alignment coil in acceleration transducer 5, thus described sine wave signal can input to the alignment coil in acceleration transducer 5;
The input end of digital voltmeter 3 is connected with the signal output part of acceleration transducer 5, and the output terminal of digital voltmeter 3 is connected with control microcomputer 4, and control microcomputer 4 can be connected by RS2332 interface with standard signal generator 2 and/or digital voltmeter 3.The magnitude of voltage that digital voltmeter 3 exports for the signal output part of degree of will speed up sensor 5 is sent to control microcomputer 4, to complete the measuring point of setpoint frequency point.Multiple different frequency is exported but the sine wave signal of identical amplitude by control microcomputer 4 control criterion signal generator 2, to measure the magnitude of voltage that acceleration transducer 5 exports under unlike signal frequency, and then complete the measuring point of multiple Frequency point, thus complete sensitivity and the amplitude versus frequency characte self-calibration of acceleration transducer 5 in frequency band range.After completing the self-calibration of acceleration transducer 5, control microcomputer 4 according to the data genaration sensor amplitude versus frequency characte figure in above-mentioned calibration process and can demarcate report.
Timing signal is being carried out to acceleration transducer 5, sine voltage signal can be applied to alignment coil at reference frequency point (reference frequency point can be set as 1/3 of the acceleration transducer 5 frequency band upper limit), the amplitude of sine wave signal is selected according to the full scale of acceleration transducer 5, measured the effective value of the voltage signal that acceleration transducer 5 exports by digital voltmeter 3, obtain the relative sensitivity of acceleration transducer 5.And then the sensor relative sensitivity measured under other calibration frequency points and amplitude.In order to ensure the accuracy of the acceleration transducer 5 output voltage effective value measured, the test point of different frequency should keep continuous input sine wave signal 20 seconds.The effective value exported with reference frequency point is for benchmark, and the effective value that the voltage effective value that other Frequency points export exports divided by reference frequency point, obtains the normalization amplitude versus frequency characte of acceleration transducer 5.According to the demarcation sensitivity of dispatching from the factory of acceleration transducer 5, the relative sensitivity of acceleration transducer 5 and the error of sensitivity of dispatching from the factory can be obtained, reach the object that the sensitivity of acceleration transducer 5 is calibrated.
In order to the sensitivity of Fast Measurement acceleration transducer 5, continuous print frequency-swept sine wave can be exported by established standards signal generator 2, sinusoidal wave frequency is from 0.04 times of the frequency band upper limit of acceleration transducer 5 until 1.4 times, at the output voltage of Simultaneously test acceleration transducer 5 of input frequency-swept sine wave, obtain the output response characteristic of acceleration transducer 5 under different frequency.
During practical application, when acceleration transducer 5 is installed on fixed position, when cannot conveniently take off, the method using the utility model to carry out in acceleration transducer 5 working site when sensitivity calibration is tested is identical with above-mentioned calibration steps, because acceleration transducer 5 is fixed on installation site, when carrying out sensitivity calibration, do not need to carry out leveling by leveling platform to the position of acceleration transducer 5.
After the test of the sensitivity calibration and amplitude versus frequency characte that complete acceleration transducer 5, control microcomputer 4 records the voltage sensitivity of acceleration transducer 5 at different frequency point automatically, generate the amplitude-versus-frequency curve figure within the scope of acceleration transducer 5 effective band by interpolation method, generate the Calibration Report of acceleration transducer 5 simultaneously.
The utility model structure is simple, degree of accuracy is high, handled easily and use, greatly can improve the speed and efficiency of demarcating acceleration transducer.
One of ordinary skill in the art will appreciate that: accompanying drawing is the schematic diagram of an embodiment, the module in accompanying drawing or flow process might not be that enforcement the utility model is necessary.
One of ordinary skill in the art will appreciate that: the module in the device in embodiment can describe according to embodiment and be distributed in the device of embodiment, also can carry out respective change and be arranged in the one or more devices being different from the present embodiment.The module of above-described embodiment can merge into a module, also can split into multiple submodule further.
Last it is noted that above embodiment is only in order to illustrate the technical solution of the utility model, be not intended to limit; Although be described in detail the utility model with reference to previous embodiment, those of ordinary skill in the art is to be understood that: it still can be modified to the technical scheme described in previous embodiment, or carries out equivalent replacement to wherein portion of techniques feature; And these amendments or replacement, do not make the essence of appropriate technical solution depart from the spirit and scope of the utility model embodiment technical scheme.
Claims (3)
1. one kind is built-in with the acceleration transducer self-calibration device of alignment coil, for demarcating acceleration transducer, described acceleration transducer is built-in with alignment coil, it is characterized in that, comprise: sensor leveling platform, standard signal generator, digital voltmeter and control microcomputer, wherein:
Described sensor leveling platform is the level of state, and described acceleration transducer is arranged on described sensor leveling platform;
The input end of described standard signal generator is connected with described control microcomputer, to export the sine wave signal of setting amplitude and setpoint frequency under the control of described control microcomputer, the output terminal of described standard signal generator is connected with the alignment coil in described acceleration transducer;
The input end of described digital voltmeter is connected with the signal output part of described acceleration transducer, and the output terminal of described digital voltmeter is connected with described control microcomputer.
2. the acceleration transducer self-calibration device being built-in with alignment coil according to claim 1, it is characterized in that, described control microcomputer is connected by RS2332 interface with described standard signal generator and/or described digital voltmeter.
3. the acceleration transducer self-calibration device being built-in with alignment coil according to claim 1, is characterized in that, described acceleration transducer is installed on fixed position but not on described sensor leveling platform.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520896148.8U CN205176056U (en) | 2015-11-11 | 2015-11-11 | Built -in acceleration sensor who has alignment coil is from calibration device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520896148.8U CN205176056U (en) | 2015-11-11 | 2015-11-11 | Built -in acceleration sensor who has alignment coil is from calibration device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205176056U true CN205176056U (en) | 2016-04-20 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520896148.8U Expired - Fee Related CN205176056U (en) | 2015-11-11 | 2015-11-11 | Built -in acceleration sensor who has alignment coil is from calibration device |
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| Country | Link |
|---|---|
| CN (1) | CN205176056U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106768282A (en) * | 2017-03-14 | 2017-05-31 | 匙庆磊 | A kind of field calibration system for magnetoelectric sensor |
-
2015
- 2015-11-11 CN CN201520896148.8U patent/CN205176056U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106768282A (en) * | 2017-03-14 | 2017-05-31 | 匙庆磊 | A kind of field calibration system for magnetoelectric sensor |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160420 Termination date: 20161111 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |