CN106404012A - Optical fiber grating sensor sensing parameter coding and decoding method and coding and decoding terminal - Google Patents
Optical fiber grating sensor sensing parameter coding and decoding method and coding and decoding terminal Download PDFInfo
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- CN106404012A CN106404012A CN201610784622.7A CN201610784622A CN106404012A CN 106404012 A CN106404012 A CN 106404012A CN 201610784622 A CN201610784622 A CN 201610784622A CN 106404012 A CN106404012 A CN 106404012A
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- 239000013307 optical fiber Substances 0.000 title abstract description 7
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- 238000005259 measurement Methods 0.000 claims description 12
- 238000012887 quadratic function Methods 0.000 claims description 7
- 238000006243 chemical reaction Methods 0.000 claims description 6
- 238000012886 linear function Methods 0.000 claims description 5
- 239000000203 mixture Substances 0.000 claims description 4
- 238000004364 calculation method Methods 0.000 claims description 3
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Classifications
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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
- G01D5/268—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 using optical fibres
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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
- G01D5/36—Forming the light into pulses
- G01D5/38—Forming the light into pulses by diffraction gratings
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- Length Measuring Devices By Optical Means (AREA)
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Abstract
The invention discloses an optical fiber grating sensor sensing parameter coding and decoding method and a coding and decoding terminal. A coding method comprises the following steps: all sensing parameters of an optical fiber grating sensor are obtained and comprise a sensor type, a fitting function type and fitting parameters; specific figures or characters are assigned to all the sensing parameters and form a code according to a certain order, and the code is converted into a bar code or a two dimensional code that can be identified. According to the optical fiber grating sensor sensing parameter coding and decoding method and the coding and decoding terminal, the parameters of the optical fiber grating sensor are used for forming the bar code or the two dimension code that can be read and demodulated via a code scanning device, and therefore the sensor can be used conveniently.
Description
Technical field
The present invention relates to sensory field of optic fibre, particularly to fiber-optic grating sensor parameter sensing decoding method and volume solution
Code terminal.
Background technology
Through the development in more than ten years, due to it, to have passive, insulation, intrinsic safe explosion-proof, signal remote for fiber grating sensing technology
Biography, high reliability, are widely used in the fields such as petroleum and petrochemical industry, traffic, electric power, national defence, Aero-Space at present.
The sensor mechanism of fiber grating is：By different encapsulating materials and technique, make external physical quantity (such as temperature, should
Power/strain, vibration, displacement, moment of torsion etc.) it is applied to fiber grating, the change of physical quantity can cause optic fiber grating wavelength to change
Become；Measure the changed wavelength of fiber grating using demodulation instrument in real time it is possible to inverse goes out real physical.
In sensor production, measure the one-to-one relationship of physical quantity and optic fiber grating wavelength first, using mathematics side
Method fitting data, is such as fitted with a line style or conic section.During use, the fitting parameter of typing sensor first, then
According to real-time measurement wavelength value, resolved according to model of fit.
Content of the invention
The purpose of the present invention, is to provide a kind of fiber-optic grating sensor coded method, by the type of sensor, matching letter
The content such as several classes of type and fitting parameter all enrolls bar code or Quick Response Code.Typing is only needed to encode during use, system can be certainly
Dynamic identification the above simultaneously starts to measure, and solves the moment sensor inconvenient difficult problem of parameter typing in use.
The present invention be employed technical scheme comprise that by reaching above-mentioned purpose：
A kind of fiber-optic grating sensor parameter sensing coded method is provided, comprises the following steps：
Obtain each parameter sensing of fiber-optic grating sensor, including sensor type, fitting function type and matching
Parameter；
Each parameter sensing is given specifically numeral or character, and composition coding in a certain order；
Code conversion is the bar code or Quick Response Code that can be identified.
In coded method of the present invention, further comprising the steps of：Obtain the product batch number of sensor, and given
Specifically numeral or character, and be added in coding.
In coded method of the present invention, fitting function type include linear function, quadratic function, exponential function and
Other fitting functions.
In coded method of the present invention, when fitting parameter is encoded, specifically by fitting parameter according to default
Computing formula is calculated, to be converted into integer, then using this integer as the part encoding.
Present invention also offers a kind of fiber-optic grating sensor parameter sensing coding/decoding method, comprise the following steps：
Read bar code or Quick Response Code；
According to coding rule, the bar code reading or Quick Response Code are demodulated；
Obtain each parameter sensing of sensor according to demodulation result, including sensor type, fitting function type and
Fitting parameter；
The sensor wavelength value of real-time measurement and fitting parameter are brought into fitting function type and calculated, obtains and sensing
The corresponding physical quantity of device type.
Present invention also offers a kind of fiber-optic grating sensor parameter sensing encoding terminal is it is characterised in that include：
Parameter acquisition module, for obtaining each parameter sensing of fiber-optic grating sensor, including sensor type, matching
Type function and fitting parameter；
Coding module, for giving specifically numeral or character by each parameter sensing, and forms in a certain order
Coding；
Modular converter, for being the bar code or Quick Response Code that can be identified by code conversion.
In encoding terminal of the present invention, this parameter acquisition module is additionally operable to obtain the product batch number of sensor, passes through
Product batch number is given specifically numeral or character by coding module, and is added in coding.
In encoding terminal of the present invention, when coding module encodes to fitting parameter, specifically fitting parameter is pressed
Calculated according to default computing formula, to be converted into integer, then using this integer as the part encoding.
Present invention also offers a kind of fiber-optic grating sensor parameter sensing decoding terminal, including：
Barcode scanning module, for reading bar code or Quick Response Code；
Decoder module, for being demodulated to the bar code reading or Quick Response Code according to coding rule, obtains sensor
Each parameter sensing, including sensor type, fitting function type and fitting parameter；
Physical Quantity Calculation module, the sensor wavelength value of real-time measurement and fitting parameter are brought into fitting function type and are carried out
Calculate, obtain the physical quantity corresponding with sensor type.
The beneficial effect comprise that：The present invention utilizes coded system, and the parameter of fiber-optic grating sensor is enrolled
Bar code or Quick Response Code, are read by barcode scanning equipment during use and demodulate, facilitate the use of sensor.
Brief description
Below in conjunction with drawings and Examples, the invention will be further described, in accompanying drawing：
Fig. 1 is embodiment of the present invention fiber-optic grating sensor parameter sensing coded method flow chart；
Fig. 2 is embodiment of the present invention fiber-optic grating sensor parameter sensing coding/decoding method flow chart
Fig. 3 is embodiment of the present invention fiber-optic grating sensor parameter sensing encoding terminal structural representation；
Fig. 4 is embodiment of the present invention fiber-optic grating sensor parameter sensing decoding terminal structural representation；
Fig. 5 is fiber grating temperature sensor characteristic curve schematic diagram；
Fig. 6 is fiber-optical grating temperature sensor bar code schematic diagram；
Fig. 7 is fiber grating strain sensor characteristic curve schematic diagram；
Fig. 8 is fiber Bragg grating strain sensor bar code schematic diagram.
Specific embodiment
In order that the objects, technical solutions and advantages of the present invention become more apparent, below in conjunction with drawings and Examples, right
The present invention is further elaborated.It should be appreciated that specific embodiment described herein is only in order to explain the present invention, not
For limiting the present invention.
As shown in figure 1, the fiber-optic grating sensor parameter sensing coded method of the embodiment of the present invention comprises the following steps：
S101, obtain fiber-optic grating sensor each parameter sensing, including sensor type, fitting function type and
Fitting parameter；
S102, by each parameter sensing give specifically numeral or character, and in a certain order composition coding；
S103, code conversion is the bar code or Quick Response Code that can be identified.
Said method can also include the steps of：Obtain the product batch number of sensor, and is given specifically digital or
Character, and be added in coding.
Sensor type includes temperature sensor, strain transducer, vibrating sensor, displacement transducer and torque sensing
Device.
It should be understood that coding can also be converted to the identification code that other can be identified, it is not limited to bar code or two dimension
Code.
Fitting function type specifically may include but be not limited to linear function, quadratic function, exponential function etc..This fitting function
Reflect the variation relation between the wavelength of fiber-optic grating sensor and respective physical amount.The different biography of different physical quantity correspondences
Sensor type.As temperature sensor, then the physical quantity being calculated is exactly temperature, the expression of corresponding fitting function be exactly wavelength and
Variation relation between temperature.
Preferably, when fitting parameter being encoded, specifically fitting parameter is calculated according to default computing formula,
To be converted into integer, then using this integer as the part encoding.
The fiber-optic grating sensor parameter sensing coding/decoding method of the embodiment of the present invention, for demodulating above-described embodiment coding staff
The coding that method obtains.As shown in Fig. 2 coding/decoding method specifically includes following steps：
S201, reading bar code or Quick Response Code；
S202, according to coding rule to read bar code or Quick Response Code be demodulated；
S203, obtain each parameter sensing of sensor according to demodulation result, including sensor type, fitting function type
And fitting parameter；
S204, the sensor wavelength value of real-time measurement and fitting parameter are brought into fitting function type and calculated, obtain
The physical quantity corresponding with sensor type.
Corresponding to the coded method of above-described embodiment, the embodiment of the present invention additionally provides a kind of fiber-optic grating sensor sensing
Parameter coding terminal, as shown in figure 3, this encoding terminal specifically includes：
Parameter acquisition module 31, for obtaining each parameter sensing of fiber-optic grating sensor, including sensor type, plan
Close type function and fitting parameter；
Coding module 32, for each parameter sensing is given specifically numeral or character, and group in a certain order
Become coding；
Modular converter 33, for being the bar code or Quick Response Code that can be identified by code conversion.
Preferably, this parameter acquisition module 31 is additionally operable to obtain the product batch number of sensor, will be given birth to by coding module 32
Produce lot number and give specifically numeral or character, and be added in coding.
Preferably, when coding module 32 encodes to fitting parameter, specifically fitting parameter is calculated public affairs according to default
Formula is calculated, to be converted into integer, then using this integer as the part encoding.
Corresponding to the coding/decoding method of above-described embodiment, the embodiment of the present invention additionally provides a kind of fiber-optic grating sensor sensing
Parameter decoding terminal, as shown in figure 4, this decoding terminal includes：
Barcode scanning module 41, for reading bar code or Quick Response Code；
Decoder module 42, for being demodulated to the bar code reading or Quick Response Code according to coding rule, is sensed
Each parameter sensing of device, including sensor type, fitting function type and fitting parameter；
Physical Quantity Calculation module 43, the sensor wavelength value of real-time measurement and fitting parameter are brought into fitting function type and are entered
Row calculates, and obtains the physical quantity corresponding with sensor type.
Embodiment of the present invention fiber-optic grating sensor parameter sensing coding/decoding system, including the encoding terminal of above-described embodiment
And decoding terminal.
Fiber grating can be encapsulated into the polytype sensor such as temperature, strain, vibration, displacement, moment of torsion in practice.Under
Table is the sensor type of definition and its corresponding digital coding example：
| Sensor type | Coding |
| Fiber-optical grating temperature sensor | 1 |
| Fiber Bragg grating strain sensor | 2 |
| Optical fiber raster vibration sensor | 3 |
| Fiber grating displacement sensor | 4 |
| Fiber grating torque sensor | 5 |
| …… | …… |
The embodiment of the present invention is taking fiber-optical grating temperature sensor as a example.The temperature characteristics of fiber-optical grating temperature sensor
Schematic diagram is as shown in Figure 5.It is fitted obtaining straight line 2, linear letter according to optical fiber grating temperature feature measurement point 1 with linear function
The parameter of number is a and b in equation 3.Wherein a is the temperature slope of sensor, and in this example, value is 10.5pm/ DEG C；B is straight line
Intercept, that is, 0 DEG C when sensor wavelength value, in this example value be 1550.123nm.Consider that coding is only capable of using integer and digit
Limit, retain one decimal place, a is multiplied by 10, then for 105；The value of b will for deducting reference wave long value 1525.000, then
It is multiplied by 1000, then for 25123.It is assumed that sensor is the 90th producing for 2015 the 50th week, the coding rule of sensor is：
Week in year-sensor type-a b
Then the coding of sensor can be set to：20155090-1-105 25123, its bar code is as shown in Figure 6.
When this temperature sensor uses, by barcode scanning equipment (as barcode scanning gun or mobile phone etc.), read bar code information.Demodulation is soft
Part extracts " 1 ", then be automatically recognized as temperature sensor, will calculate temperature information；Extraction " 105 " and " 25123 " two simultaneously
" 25123 ", by " 105 " divided by 10, are added 1525.000 divided by 1000 simultaneously, are brought into formula and obtain by parameter：
Y=10.5*10-3*x+1550.123
Wherein y is the sensor wavelength value of real-time measurement, for example, be now 1551.123nm, bring above formula into and can obtain x=
95.2 DEG C, thus completing temperature survey.
The present invention can also increase the quantity of information of coding further.As increased a coding in order to the matching letter used by identifying
Number.Following table is the fitting function type of definition and its corresponding digital coding example：
| Fitting function type | Equation expression formula | Coding |
| Linear function | Y=a*x+b | 1 |
| Quadratic function | Y=a*x2+b*x+c | 2 |
| Exponential function | Y=a*exp (b*x) | 3 |
| …… | …… |
This example illustrates taking strain transducer as a example.The emergent property curve synoptic diagram of fiber Bragg grating strain sensor is such as
Shown in Fig. 7.It is fitted obtaining curve 5, the parameter of quadratic function according to fiber grating strain feature measurement point 4 with quadratic function
For a, b and c in equation 6.A is taken to be 2.2*10 in this example-7nm/με2, b is 1.0*10-3Nm/ μ ε, c are 1555.123nm.Consider
Coding is only capable of limiting using integer and digit, retains one decimal place, a is multiplied by 108, then for 22；The value of b is multiplied by
104, then for 10；, the value of c for deducting reference wave long value 1525.000, then will be multiplied by 1000, then for 30123.It is assumed that sensor
For the 91st of production in 2015 the 51st week, the coding rule of sensor is：
Week in year only-sensor type-fitting function type-a b c
Then the coding of sensor can be set to：20155191-2-2-22 10 30123, its bar code is as shown in Figure 8.
When this strain transducer uses, by barcode scanning equipment (as barcode scanning gun or mobile phone etc.), read bar code information.Demodulation is soft
Part extracts two " 2 ", then be automatically recognized as strain transducer, and will resolve strain information according to quadratic function；Extract simultaneously
" 22 ", " 10 " and " 30123 " three parameters, " 22 " are divided by 108, " 10 " are divided by 104, " 30123 " are added divided by 1000 simultaneously
1525.000, it is brought into formula and obtain：
Y=2.2*10-7*x2+1.0*10-3*x+1555.123
Wherein y is the sensor wavelength value of real-time measurement, for example, be now 1551.225nm, bring above formula into and can obtain x=100
μ ε, thus complete strain measurement.
It should be appreciated that for those of ordinary skills, can be improved according to the above description or be converted,
And all these modifications and variations all should belong to the protection domain of claims of the present invention.
Claims (9)
1. a kind of fiber-optic grating sensor parameter sensing coded method is it is characterised in that comprise the following steps：
Obtain each parameter sensing of fiber-optic grating sensor, including sensor type, fitting function type and fitting parameter；
Each parameter sensing is given specifically numeral or character, and composition coding in a certain order；
Code conversion is the bar code or Quick Response Code that can be identified.
2. method according to claim 1 is it is characterised in that further comprising the steps of：Obtain the product batch number of sensor,
And given specifically numeral or character, and it is added in coding.
3. method according to claim 1 is it is characterised in that fitting function type includes linear function, quadratic function, refers to
Number function and other fitting functions.
4. method according to claim 1 is it is characterised in that when encoding to fitting parameter, specifically by fitting parameter
Calculated according to default computing formula, to be converted into integer, then using this integer as the part encoding.
5. a kind of fiber-optic grating sensor parameter sensing coding/decoding method based on claim 1 is it is characterised in that include following walking
Suddenly：
Read bar code or Quick Response Code；
According to coding rule, the bar code reading or Quick Response Code are demodulated；
Obtain each parameter sensing of sensor according to demodulation result, including sensor type, fitting function type and matching
Parameter；
The sensor wavelength value of real-time measurement and fitting parameter are brought into fitting function type and calculated, obtains and sensor class
The corresponding physical quantity of type.
6. a kind of fiber-optic grating sensor parameter sensing encoding terminal is it is characterised in that include：
Parameter acquisition module, for obtaining each parameter sensing of fiber-optic grating sensor, including sensor type, fitting function
Type and fitting parameter；
Coding module, for each parameter sensing is given specifically numeral or character, and composition coding in a certain order；
Modular converter, for being the bar code or Quick Response Code that can be identified by code conversion.
7. encoding terminal according to claim 6 is it is characterised in that this parameter acquisition module is additionally operable to obtain sensor
Product batch number is given specifically numeral or character by coding module, and is added in coding by product batch number.
8. encoding terminal according to claim 6 is it is characterised in that when coding module encodes to fitting parameter, have
Fitting parameter is calculated by body according to default computing formula, to be converted into integer, then using this integer as coding
A part.
9. a kind of fiber-optic grating sensor parameter sensing decoding terminal based on claim 6 is it is characterised in that include：
Barcode scanning module, for reading bar code or Quick Response Code；
Decoder module, for being demodulated to the bar code reading or Quick Response Code according to coding rule, obtains each of sensor
Individual parameter sensing, including sensor type, fitting function type and fitting parameter；
Physical Quantity Calculation module, the sensor wavelength value of real-time measurement and fitting parameter are brought into fitting function type and are counted
Calculate, obtain the physical quantity corresponding with sensor type.
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Cited By (2)
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| CN108414089A (en) * | 2018-02-05 | 2018-08-17 | 南京理工大学 | A kind of measuring device and its measurement method of optical fiber grating temperature coefficient |
| CN109189008A (en) * | 2018-06-04 | 2019-01-11 | 杭州瑞纽宝科技有限公司 | A kind of sensor monitoring system based on electronic mark and cloud platform, convenient and fast detection data acquisition system and method |
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Application publication date: 20170215 |
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