CN203053562U - Frequency response calibration device of distributed type broadband spectrum fiber interference vibration sensing system - Google Patents
Frequency response calibration device of distributed type broadband spectrum fiber interference vibration sensing system Download PDFInfo
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- CN203053562U CN203053562U CN 201220704980 CN201220704980U CN203053562U CN 203053562 U CN203053562 U CN 203053562U CN 201220704980 CN201220704980 CN 201220704980 CN 201220704980 U CN201220704980 U CN 201220704980U CN 203053562 U CN203053562 U CN 203053562U
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Abstract
The utility model relates to a frequency response calibration device of a distributed type broadband spectrum fiber interference vibration sensing system. The frequency response calibration device comprises a piezoelectric ceramic vibration source and a data collection testing system. Two leads for connecting a signal generator are extracted from the positive and negative electrodes of the piezoelectric ceramic vibration source; and the vibration source is pasted on a wound tightly-wrapped fiber loop. Two ends of the optical fiber of the tightly-wrapped fiber loop are respectively welded with FC/APC optical fiber jumper joints. And the piezoelectric ceramic vibration source is connected to the data collection testing system by a sensing light path. According to the utility model, the beneficial effects are as follows: a piezoelectric ceramic piece is used the vibration source, so that the signal vibration waveform and frequency can be adjusted conveniently and accurately; a sponge is arranged in an accommodation box to absorb noises, so that noises generated by the vibration and the vibration are low; the device can be kept far away from the interference light path, so that little interference on the light path can be caused basically; the device can be used for sensor calibration and a frequency response curve as an important index of an optical fiber vibration sensor can be provided; and the provided device with low cost has a simple structure.
Description
Technical field
The utility model relates to a kind of frequency response caliberating device, and particularly distributed wide spectroscopic fibers is interfered the frequency response caliberating device of vibration sensing system.
Background technology
Optical fiber sensing technology becomes one optical fiber technology and detection technique, have " sense ", " biography " unification, strong anti-electromagnetic interference (EMI), electrical isolation, anticorrosive, high temperature resistant, signal attenuation is little, measuring multiple parameters characteristics such as (temperature, stress, vibration, displacement, rotation, electromagnetic field, chemistry amount and biomasss etc.), be widely used.
In recent years, improved wide spectral interation technique development rapidly.That the vibration transducer of being made by wide spectroscopic fibers principle of interference has is anti-interference, environmental suitability is strong, highly sensitive, advantage such as the vibratory response scope big, the vibration acceleration response scope is big, therefore can be applicable to all kinds of vibrating sensings, vibration monitoring field.
But this system is sound, little vibration sensing to external world, use conventional metering system, such as the vibratory response that utilizes various vibration modes, cause system responses saturated, cause lacking effective means light path system is tested, therefore be difficult to obtain sensor frequency response relation accurately.
The utility model content
The purpose of this utility model is to propose the frequency response caliberating device that a kind of distributed wide spectroscopic fibers is interfered vibration sensing system, interferes to solve distributed wide spectroscopic fibers that vibration transducer is subject to vibrate, noise effect and the accurate problem of frequency response.
For reaching this purpose, the utility model by the following technical solutions:
Distributed wide spectroscopic fibers is interfered the frequency response caliberating device of vibration sensing system, comprise piezoelectric ceramics vibration source and data acquisition test system, both positive and negative polarity is drawn two leads that are used for connecting signal generator in piezoelectric ceramics vibration source, described piezoelectric ceramics vibration source is bonded on the tightly packaged fiber ring of winding, a FC/APC optical patchcord of each welding of optical fiber two of described tightly packaged fiber ring joint, the data acquisition test system is inserted by the sensing light path in described piezoelectric ceramics vibration source.
Preferably, described whole frequency response caliberating device places in the container, and described container adopts plastic casing, and the terminal in the jumper terminal of described tightly packaged fiber ring and described piezoelectric ceramics vibration source is drawn outside container.
Preferably, the tightly packaged fiber ring is the ring of the radius 4cm of fiber reel coiled, and the coiling number of rings is more than 3 rings.
Preferably, be filled with sponge in the described container.
The beneficial effects of the utility model are:, can make things convenient for, accurately conditioning signal vibrational waveform and frequency as vibration source by piezoelectric ceramic piece; The sponge absorption of noise is set in container, and the noise that vibration produces is low, vibration is little, can not cause interference to light path substantially away from optical interference circuit simultaneously; Can be used for transducer calibration, optical fibre vibration sensor important indicator---frequency response curve is provided; Apparatus structure is simple, with low cost.
Description of drawings
Fig. 1 is the utility model structural representation;
Fig. 2 is system of the present utility model connection diagram;
Fig. 3 is the original signal waveform that utilizes before the utility model is measured;
Fig. 4 is the curve map that adopts the sine wave oscillations response that wavelet de-noising mode noise reduction obtains.
Among the figure:
1, optical patchcord joint; 2, lead; 3, tightly packaged fiber ring; 4, piezoelectric ceramic piece; 5, container; 6, signal generator; 7, pressure vibration source; 8, sensing light path; 9, data acquisition test system.
Embodiment
Further specify the technical solution of the utility model below in conjunction with accompanying drawing and by embodiment.
Shown in Fig. 1 to 4, provided a specific embodiment of the present utility model.
Distributed wide spectroscopic fibers is interfered the frequency response caliberating device of vibration sensing system, comprises piezoelectric ceramics vibration source and data acquisition test system,
Figure 1 shows that the utility model structural representation, among the figure, the piezoelectric ceramic piece 4 in piezoelectric ceramics vibration source and the tightly packaged fiber ring 3 that glues thereon all place in the container 5, described container 5 adopts the engineering plastics box, both positive and negative polarity in piezoelectric ceramics vibration source is drawn two leads 2 that are used for connecting signal generator, a FC/APC optical patchcord of each welding of optical fiber two of described tightly packaged fiber ring 3 joint 1, lead 2 joints in the optical patchcord joint 1 of described tightly packaged fiber ring 3 and described piezoelectric ceramics vibration source are drawn outside container 5, are full of sponge in the container 5 and reduce noise leakage; Described tightly packaged fiber ring 3 is the ring of the radius 4cm of fiber reel coiled, and the coiling number of rings is 3 rings.
Be illustrated in figure 2 as each system's connection diagram of the utility model, among the figure, described signal generator 6 is connected to pressure vibration source 7, and described pressure vibration source 7 transmits signals to data acquisition test system 9 by sensing light path 8.
Be illustrated in figure 3 as the original signal waveform before utilizing the utility model to measure, Fig. 4 is the curve map that adopts the sine wave oscillations response that wavelet de-noising mode noise reduction obtains.
Using method of the present utility model is: the lead 2 of caliberating device connects signal generator 6, by the moving waveform of signal generator control 6 dampings and frequency, the optical fiber of caliberating device inserts distributed wide spectroscopic fibers vibration transducer vibrating sensing part, optical fiber carries out wave form analysis by sticking on the corresponding vibration signal of piezoelectric ceramic piece 4 sensings by data acquisition test system 9.
Be specially: signal generator 6 is set output frequency from 10Hz ~ 15kHz, and waveform may be selected to be sine wave, square wave etc., and voltage amplitude is set from 1V ~ 10V, selects output waveform then, and the output probe connects lead 2 two ends of this device respectively.
Move distributed wide spectroscopic fibers vibration sensing system, observe the output of light intensity waveform, record its response wave shape peak-to-peak value, signal frequency.If the response light intensity signal a little less than, can pass through: (1) adjusts signal generator input voltage mode; (2) increase the tightly packaged fiber coiling number of turns; (3) signal de-noising mode etc. is obtained proper signal.
Adopt distributed wide spectroscopic fibers of the present utility model to interfere the frequency response caliberating device of vibration sensing system, can guarantee each vibrating effect basically identical, vibration mode and frequency are accurately controlled, and be with low cost.Therefore, the vibratory response of adopting distributed wide spectroscopic fibers of the present utility model to interfere the frequency response caliberating device of vibration sensing system can carry out distributed wide spectroscopic fibers vibration transducer is effectively demarcated.
Claims (4)
1. distributed wide spectroscopic fibers is interfered the frequency response caliberating device of vibration sensing system, comprise piezoelectric ceramics vibration source and data acquisition test system, it is characterized in that: both positive and negative polarity is drawn two leads that are used for connecting signal generator in piezoelectric ceramics vibration source, described piezoelectric ceramics vibration source is bonded on the tightly packaged fiber ring of winding, a FC/APC optical patchcord of each welding of optical fiber two of described tightly packaged fiber ring joint, the data acquisition test system is inserted by the sensing light path in described piezoelectric ceramics vibration source.
2. distributed wide spectroscopic fibers according to claim 1 is interfered the frequency response caliberating device of vibration sensing system, it is characterized in that: described whole frequency response caliberating device places in the container, described container adopts plastic casing, and the terminal in the jumper terminal of described tightly packaged fiber ring and described piezoelectric ceramics vibration source is drawn outside container.
3. distributed wide spectroscopic fibers according to claim 1 and 2 is interfered the frequency response caliberating device of vibration sensing system, and it is characterized in that: the tightly packaged fiber ring is the ring of the radius 4cm of fiber reel coiled, and the coiling number of rings is more than 3 rings.
4. distributed wide spectroscopic fibers according to claim 2 is interfered the frequency response caliberating device of vibration sensing system, it is characterized in that: be filled with sponge in the described container.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220704980 CN203053562U (en) | 2012-12-18 | 2012-12-18 | Frequency response calibration device of distributed type broadband spectrum fiber interference vibration sensing system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220704980 CN203053562U (en) | 2012-12-18 | 2012-12-18 | Frequency response calibration device of distributed type broadband spectrum fiber interference vibration sensing system |
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| CN203053562U true CN203053562U (en) | 2013-07-10 |
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| CN 201220704980 Withdrawn - After Issue CN203053562U (en) | 2012-12-18 | 2012-12-18 | Frequency response calibration device of distributed type broadband spectrum fiber interference vibration sensing system |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103048039A (en) * | 2012-12-18 | 2013-04-17 | 北京航天易联科技发展有限公司 | Frequency-response calibration device of distributed type wide-spectrum optical-fiber-interference vibration sensing system |
| CN104236694A (en) * | 2014-06-04 | 2014-12-24 | 新疆华讯科技开发有限公司 | Optical fiber type vibrating sensor high in sensitivity |
| CN104596563A (en) * | 2014-12-30 | 2015-05-06 | 无锡波汇光电科技有限公司 | Optical fiber sensing system consistency test method |
| CN105488968A (en) * | 2015-12-24 | 2016-04-13 | 上海华魏光纤传感技术有限公司 | Vibration source for calibrating positioning type optical fiber vibration host and manufacturing method |
| CN109631943A (en) * | 2018-12-09 | 2019-04-16 | 西安航天精密机电研究所 | A kind of fiber optic loop evaluation and test module and evaluating system |
-
2012
- 2012-12-18 CN CN 201220704980 patent/CN203053562U/en not_active Withdrawn - After Issue
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103048039A (en) * | 2012-12-18 | 2013-04-17 | 北京航天易联科技发展有限公司 | Frequency-response calibration device of distributed type wide-spectrum optical-fiber-interference vibration sensing system |
| CN103048039B (en) * | 2012-12-18 | 2016-01-27 | 北京航天易联科技发展有限公司 | The frequency response caliberating device of distributed wide spectral fiber optic interferometric vibration sensing system |
| CN104236694A (en) * | 2014-06-04 | 2014-12-24 | 新疆华讯科技开发有限公司 | Optical fiber type vibrating sensor high in sensitivity |
| CN104236694B (en) * | 2014-06-04 | 2017-03-22 | 中科华讯科技开发有限公司 | Optical fiber type vibrating sensor high in sensitivity |
| CN104596563A (en) * | 2014-12-30 | 2015-05-06 | 无锡波汇光电科技有限公司 | Optical fiber sensing system consistency test method |
| CN104596563B (en) * | 2014-12-30 | 2017-11-14 | 上海波汇科技股份有限公司 | A kind of optical fiber sensing system Consistency test method |
| CN105488968A (en) * | 2015-12-24 | 2016-04-13 | 上海华魏光纤传感技术有限公司 | Vibration source for calibrating positioning type optical fiber vibration host and manufacturing method |
| CN109631943A (en) * | 2018-12-09 | 2019-04-16 | 西安航天精密机电研究所 | A kind of fiber optic loop evaluation and test module and evaluating system |
| CN109631943B (en) * | 2018-12-09 | 2020-08-14 | 西安航天精密机电研究所 | Optical fiber ring evaluating module and evaluating system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20130710 Effective date of abandoning: 20160127 |
|
| C25 | Abandonment of patent right or utility model to avoid double patenting |