CN109974755A - A kind of flexible multi-parameter sensor and its preparation based on fiber grating principle - Google Patents
A kind of flexible multi-parameter sensor and its preparation based on fiber grating principle Download PDFInfo
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- CN109974755A CN109974755A CN201910274473.3A CN201910274473A CN109974755A CN 109974755 A CN109974755 A CN 109974755A CN 201910274473 A CN201910274473 A CN 201910274473A CN 109974755 A CN109974755 A CN 109974755A
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- 239000000835 fiber Substances 0.000 title claims abstract description 29
- 238000002360 preparation method Methods 0.000 title abstract description 6
- 239000004205 dimethyl polysiloxane Substances 0.000 claims abstract description 15
- 235000013870 dimethyl polysiloxane Nutrition 0.000 claims abstract description 15
- CXQXSVUQTKDNFP-UHFFFAOYSA-N octamethyltrisiloxane Chemical compound C[Si](C)(C)O[Si](C)(C)O[Si](C)(C)C CXQXSVUQTKDNFP-UHFFFAOYSA-N 0.000 claims abstract description 15
- 238000004987 plasma desorption mass spectroscopy Methods 0.000 claims abstract description 15
- 229920000435 poly(dimethylsiloxane) Polymers 0.000 claims abstract description 15
- 239000013307 optical fiber Substances 0.000 claims abstract description 14
- 230000003287 optical effect Effects 0.000 claims abstract description 10
- 125000000118 dimethyl group Chemical group [H]C([H])([H])* 0.000 claims abstract description 3
- 229920005573 silicon-containing polymer Polymers 0.000 claims abstract description 3
- 238000012360 testing method Methods 0.000 claims abstract description 3
- 238000005259 measurement Methods 0.000 abstract description 15
- 238000005538 encapsulation Methods 0.000 abstract description 2
- 231100000252 nontoxic Toxicity 0.000 abstract description 2
- 230000003000 nontoxic effect Effects 0.000 abstract description 2
- 229920006254 polymer film Polymers 0.000 abstract 2
- 238000009826 distribution Methods 0.000 description 5
- 238000000034 method Methods 0.000 description 4
- 238000004458 analytical method Methods 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 230000036541 health Effects 0.000 description 2
- 230000001788 irregular Effects 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 230000035807 sensation Effects 0.000 description 2
- 241000208340 Araliaceae Species 0.000 description 1
- 235000005035 Panax pseudoginseng ssp. pseudoginseng Nutrition 0.000 description 1
- 235000003140 Panax quinquefolius Nutrition 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- 230000004927 fusion Effects 0.000 description 1
- 235000008434 ginseng Nutrition 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
- G01D5/00—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable
- G01D5/26—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable characterised by optical transfer means, i.e. using infrared, visible, or ultraviolet light
- G01D5/32—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable characterised by optical transfer means, i.e. using infrared, visible, or ultraviolet light with attenuation or whole or partial obturation of beams of light
- G01D5/34—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable characterised by optical transfer means, i.e. using infrared, visible, or ultraviolet light with attenuation or whole or partial obturation of beams of light the beams of light being detected by photocells
- G01D5/353—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable characterised by optical transfer means, i.e. using infrared, visible, or ultraviolet light with attenuation or whole or partial obturation of beams of light the beams of light being detected by photocells influencing the transmission properties of an optical fibre
- G01D5/35306—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable characterised by optical transfer means, i.e. using infrared, visible, or ultraviolet light with attenuation or whole or partial obturation of beams of light the beams of light being detected by photocells influencing the transmission properties of an optical fibre using an interferometer arrangement
- G01D5/35309—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable characterised by optical transfer means, i.e. using infrared, visible, or ultraviolet light with attenuation or whole or partial obturation of beams of light the beams of light being detected by photocells influencing the transmission properties of an optical fibre using an interferometer arrangement using multiple waves interferometer
- G01D5/35316—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable characterised by optical transfer means, i.e. using infrared, visible, or ultraviolet light with attenuation or whole or partial obturation of beams of light the beams of light being detected by photocells influencing the transmission properties of an optical fibre using an interferometer arrangement using multiple waves interferometer using a Bragg gratings
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Abstract
The present invention provides a kind of flexible multi-parameter sensor and preparation method thereof based on fiber grating principle.The sensor includes a plurality of bare optical fibers and bare optical gratings being welded together and outer package layer PDMS film；The fiber grating being welded together includes three testing temperatures, the bare optical fibers and bare optical gratings channel of three measuring pressures and three measuring moistures；The outer package layer includes that will measure the high molecular polymer film that optical fiber Bragg grating encapsulation gets up at the six of temperature and pressure；High molecular polymer film used in the present invention is organosilicon, i.e. dimethyl silicone polymer, has nontoxic, highly-breathable, hydrophobicity, waterproofness high resiliency, avoids the influence that humidity measures temperature, pressure.It draws respectively the fiber grating joint in every channel, it is connected with wideband light source and detecting head, there is small temperature, pressure humidity variation, is just enough to cause the long variation of the wave travels in channel, using spectrometer measurement wavelength, to detect the variation of temperature, pressure humidity.
Description
Technical field
The present invention relates to a kind of sensor, especially a kind of flexible multi-parameter sensor based on fiber grating principle and its
Preparation method.
Background technique
Professional device of the conventional sensors as acquisition control point data, the common single pressure of single temperature sensor pass
The single hygrometer of sensor is many kinds of.Ideal temperature, pressure humidity sensor should have it is low in cost, prepare it is simple and logical
The features such as strong with property.Conventional sensors are with a wide range of applications in industries such as electric power, automobile, furniture, industry manufactures, still
Ordinary temperature or pressure or humidity sensor are all based on greatly hard material and are prepared, and are not suitable for human body surface or have not advise
The then Data Detection of curved surface, there are processing costs it is high, process is complicated the problems such as.Meanwhile conventional sensor is mostly mutually discrete
Independent measurement, and a kind of parameter of single-measurement or two kinds of parameters.On the one hand it is unable to satisfy demand of the people to measuring multiple parameters, separately
On the one hand subsequent design cost is increased.
To sum up, it is desirable to provide a kind of processing is simple, and measuring multiple parameters demand is met while low in cost, can be used for human body
The flexible temperature, pressure humidity sensor of health monitoring.
Summary of the invention
In order to meet the needs of the prior art, it is feasible based on fiber grating principle that the present invention provides a kind of laboratories
Flexible multi-temperature pressure humidity sensor and its method of preparation.
The technical scheme is that
The sensor includes the three parts bragg grating for measuring temperature, pressure and humidity.The flexibility many reference amounts pass
Sensor includes a plurality of bragg grating being welded together and outer package layer PDMS film；It is described to be welded together
Fiber grating includes the bragg grating channel of three testing temperatures, the bragg grating channel of three measuring pressures and
The bragg grating channel of three measuring moistures；The outer package layer includes that will measure fiber grating at the six of temperature and pressure
The PDMS film being encapsulated；PDMS film used in the present invention is organosilicon, i.e. dimethyl silicone polymer, is had nontoxic, high
Gas permeability, hydrophobicity, waterproofness high resiliency avoid the influence that humidity measures temperature, pressure.The optical fiber in every channel
Grating joint is drawn respectively, is connected with wideband light source and detecting head, is had small temperature, pressure humidity variation, is just enough to cause
The variation of wave travels length in channel, using spectrometer measurement wavelength, to detect the variation of temperature, pressure humidity.
Preferably, a length of 300mm in bragg grating fibre core two sides.
Preferably, three bragg grating vertical setting of types genesis analysis of the measurement temperature are located at left column, the latter and
Previous 4-5cm apart, as shown in Fig. 1.
Preferably, three bragg grating vertical setting of types genesis analysis of the measurement pressure are located at right column, the latter and
Previous 4-5cm apart, as shown in Fig. 1.
Preferably, three bragg gratings one of the measurement humidity is distributed in the head end in two column middle positions,
Two other is symmetrically distributed in the tail end in two column middle positions, left and right distribution, in 45 ° of " eight " word distributions.
Compared with prior art, the excellent effect of the present invention is that: used fusion techniques in 1. production methods of the invention
And fiber grating principle, it is wavelength measurement that simple to operate, principle is understandable, and measurement data is single, convenient for calculating and managing
Solution.
2. more comprehensive multi-parameter real-time measurements of fixed point may be implemented in structure of the invention, the data measured are comprehensive
Accurately.
3. bare optical fibers and bare optical gratings are used on raw material of the invention, it is low in cost, it can be mass-produced；Meanwhile bare fibre light
Flexibility may be implemented in grid, and perfect and irregular surface such as human body surface fits, and applies in such as intelligent wearable device, electronics
The industries such as skin.
4. sensor of the invention preparation method is mutually to be melted bare optical fibers and bare optical gratings and detecting head lead using optical fiber splicer
It connects, and optical fiber Bragg grating encapsulation and fixation is realized into the flexible measuring that can adhere on the fabric with PDMS film.
Detailed description of the invention
The following further describes the present invention with reference to the drawings.
Fig. 1: it in the embodiment of the present invention for measuring foot health parameters, shows a kind of based on the soft of fiber grating principle
Property multi-parameter sensor structure distribution schematic diagram.
A kind of Fig. 2: flexible multi-parameter sensor structural upright section based on fiber grating principle in the embodiment of the present invention
Figure.
Wherein, 1: number one temperature grating；2: No. the second temperature gratings；3: third temperature grating；4: number one humidity
Grating；5: No. the second humidity gratings；6: number one pressure grating；7: No. the second pressure gratings；8: third pressure grating；9: the
No. three temperature and humidity gratings;10:PDMS film.
Specific embodiment
The embodiment of the present invention is described below in detail, the embodiment is with the temperature, pressure humidity parameter and sensing in vola
For device distributed architecture.The example of embodiment is shown in the accompanying drawings, wherein same or similar symbol indicates identical from beginning to end
Or similar element or element with the same or similar functions.
The embodiment of flexible multi-parameter sensor based on fiber grating principle provided by the invention a kind of as shown in Figure 1,
Specifically: the sensor includes nine naked bragg gratings for being used as main body and the PDMS film as outer package layer,
Middle main part mainly includes 1, No. second temperature grating 2 of number one temperature grating, third temperature grating 3, number one humidity
4, No. second humidity gratings 5 of grating, 6, No. second pressure gratings 7 of number one pressure grating, third pressure grating 8 and third number
Humidity grating 9, outer package layer are PDMS films 10.Wherein, 1, No. second temperature grating 2, third temperature of number one temperature grating
Degree grating 3, number one humidity grating 4 are located at left column, 8, No. second pressure gratings 7 of third pressure grating, number one pressure light
6, No. second humidity gratings 5 of grid are located at right column, and four row's gratings are divided into two column and correspond respectively, are symmetric, third number is wet
The head end central location that grating 9 is located at two column is spent, number one humidity grating 4 and No. second humidity grating 5 are symmetrically distributed in two column
Tail end central location, left and right distribution, in the distribution of 45 ° of " eight " words.PDMS film 10 is located at nine fiber grating bottoms, simultaneously will
The six roots of sensation bragg grating outer enclosure of measurement temperature, pressure is got up.
In the present embodiment, 9 fiber gratings are subjected to welding with detecting head connector respectively with optical fiber splicer.
The core segment for measuring the six roots of sensation bragg grating of temperature and pressure is packaged, has encapsulated and has carried out each ginseng
Several calibration measurements, is individually measured without the wavelength under temperature, pressure humidity condition using spectrometer, calculates phase therewith
Corresponding temperature, pressure humidity parameter, is demarcated.
After the completion of calibration, last outer package is carried out to sensor, nine bragg gratings is fixed, simultaneously
To meet the detection working condition requirement of irregular surface temperature, pressure.
In the present embodiment, when the temperature is changed, the generation of optical fiber temperature grating middle width strip optical wavelength is permanently sexually revised, Jin Ertong
Cross the variation temperature variation of measurement of wavelength.
In the present embodiment, when pressure change, the generation of pressure fiber grating middle width strip optical wavelength is permanently sexually revised, Jin Ertong
The variation for crossing measurement of wavelength determines pressure change.
In the present embodiment, since the fiber grating of measurement temperature and pressure is all encapsulated by PDMS film, therefore it not will receive wet
Spend the influence changed.
Finally it should be noted that: described embodiment be only of the invention is explained further, do not represent Ben Fa
Bright protection scope is only limitted to this, and all equivalence replacements done with thinking of the invention are in protection scope of the present invention.
Claims (3)
1. a kind of flexible multi-parameter sensor based on fiber grating principle, it is characterised in that: described to be based on fiber grating principle
Flexible multi-parameter sensor include a plurality of bare optical fibers and bare optical gratings being welded together and outer package layer PDMS film；It is described molten
The fiber grating being connected together includes the bare optical fibers and bare optical gratings channel of three testing temperatures, the bare optical fibers and bare optical gratings channels of three measuring pressures with
And the bare optical fibers and bare optical gratings channel of three measuring moistures；The outer package layer includes that will measure fiber grating at the six of temperature and pressure to seal
The PDMS film loaded；The PDMS film is organosilicon, i.e. dimethyl silicone polymer.
2. a kind of flexible multi-parameter sensor based on fiber grating principle as described in claim 1, it is characterised in that: described
Fiber grating is the channel being welded together by naked bragg grating and detecting head, retains major part and two terminations
Head, the main a length of 300mm in fibre core both ends.
3. a kind of flexible multi-parameter sensor based on fiber grating principle as described in claim 1, it is characterised in that: described
PDMS film should be encapsulated on fibre core, and to add PDMS thin for the fibre core for measuring six bragg gratings of temperature and pressure
Film.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201910274473.3A CN109974755B (en) | 2019-04-08 | 2019-04-08 | Flexible multi-parameter sensor based on fiber grating principle and preparation thereof |
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| CN201910274473.3A CN109974755B (en) | 2019-04-08 | 2019-04-08 | Flexible multi-parameter sensor based on fiber grating principle and preparation thereof |
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| CN109974755A true CN109974755A (en) | 2019-07-05 |
| CN109974755B CN109974755B (en) | 2021-07-30 |
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Cited By (3)
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| CN112212898A (en) * | 2020-09-09 | 2021-01-12 | 山东科技大学 | Intelligent skin based on small-size distributed optical fiber sensing array |
| CN112641425A (en) * | 2019-10-12 | 2021-04-13 | 四川大学 | Design and preparation of wearable flexible multi-parameter sensor |
| CN114018922A (en) * | 2021-11-04 | 2022-02-08 | 中国工程物理研究院激光聚变研究中心 | Micro-nano optical fiber humidity sensor and preparation method and application thereof |
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