CN106500773A - The fiber grating sensing system and measuring method of dust concentration and temperature simultaneously measuring - Google Patents
The fiber grating sensing system and measuring method of dust concentration and temperature simultaneously measuring Download PDFInfo
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- CN106500773A CN106500773A CN201611050775.5A CN201611050775A CN106500773A CN 106500773 A CN106500773 A CN 106500773A CN 201611050775 A CN201611050775 A CN 201611050775A CN 106500773 A CN106500773 A CN 106500773A
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- 239000000835 fiber Substances 0.000 title claims abstract description 142
- 239000000428 dust Substances 0.000 title claims abstract description 84
- 238000000034 method Methods 0.000 title claims abstract description 19
- 239000013307 optical fiber Substances 0.000 claims abstract description 51
- 238000005259 measurement Methods 0.000 claims abstract description 6
- 230000005540 biological transmission Effects 0.000 claims description 12
- 238000012360 testing method Methods 0.000 claims description 12
- 230000003287 optical effect Effects 0.000 claims description 9
- 238000000985 reflectance spectrum Methods 0.000 claims description 5
- 230000003595 spectral effect Effects 0.000 claims description 3
- 230000006698 induction Effects 0.000 claims 1
- 238000001514 detection method Methods 0.000 description 9
- 238000004880 explosion Methods 0.000 description 3
- 238000012544 monitoring process Methods 0.000 description 3
- 239000000843 powder Substances 0.000 description 3
- 239000000203 mixture Substances 0.000 description 2
- 238000005070 sampling Methods 0.000 description 2
- 230000008859 change Effects 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000002360 explosive Substances 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 230000008676 import Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000005272 metallurgy Methods 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000000737 periodic effect Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 230000009182 swimming Effects 0.000 description 1
- 230000002463 transducing effect Effects 0.000 description 1
- 238000009941 weaving Methods 0.000 description 1
- 238000005303 weighing Methods 0.000 description 1
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
- G01D21/00—Measuring or testing not otherwise provided for
- G01D21/02—Measuring two or more variables by means not covered by a single other subclass
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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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- Investigating Or Analysing Materials By Optical Means (AREA)
- Measuring Temperature Or Quantity Of Heat (AREA)
Abstract
The invention discloses the fiber grating sensing system and measuring method of a kind of dust concentration and temperature simultaneously measuring, the fiber grating sensing system of dust concentration and temperature simultaneously measuring includes the fiber bragg grating sensing device of computer, fiber grating demodulation device and multiple concatenations, its Computer is connected with fiber grating demodulation device, the fiber bragg grating sensing device of multiple concatenations is connected with fiber grating demodulation device by the first optical fiber grating sensor apparatus, and in multiple fiber bragg grating sensing devices, the centre wavelength of fiber grating is different.The application only can measure dust concentration and ambient temperature simultaneously using a fiber grating, and two measured parameters are independent of each other, and improve measurement efficiency.
Description
Technical field
The present invention relates to sensing detection technical field, in particular to a kind of dust concentration and temperature simultaneously measuring
Fiber grating sensing system and measuring method.
Background technology
Combustible dust is widely present in chemical industry, metallurgy, weaving, medicine, grain processing, coal mining and powder body and prepares
Industry-by-industry and the department such as storage and transport, for these places, it usually needs by dust concentration and temperature-detecting device pair
Dust concentration of swimming in the air of Work places is monitored, and to take corresponding measure, prevents because dust concentration is exceeded
Set off an explosion.
At present domestic is dust concentration sampling method using more dust monitoring method, and method substantially has two kinds：One is to make
With sampler samples, by weighing and calculating dust concentration value；Two is to use quick dust gauge, after Site Detection, reads powder
Dust concentration.Dust sampler is high due to the accuracy for measuring, and is set to standard dust concentration mensuration instrument in a lot of countries, but which needs
A series of loaded down with trivial details processes such as weigh, dry, sampling, drying again, being re-weighed and calculating, reflection that therefore can not be real-time
The pollution situation of Work places dust.The measuring method that quick dust gauge is adopted substantially has optical method, R ray attenuations method and piezoelectricity
The three major types such as crystal frequency method of changing, the method need staff's carrying instrument to measure reading data at the scene, equally cannot
Carry out real-time online detection, be unfavorable for dust concentration real-time early warning, and quick dust gauge is powered type instrument, have electric charge to export
When, easily cause environment dust to fire, therefore the instrument essence is dangerous.
Optical fiber grating sensing element is the periodic refractive index set up on trickle fibre core of heliosensitivity point using optical fiber
Cloth, its possess non-electric detection, electromagnetism interference, without temperature drift, high precision, reliability be high, single light with light as transducing signal
Fibre can be connected the advantages such as multiple grating measuring points, be a kind of detecting element of essential safety.There is the industry of dust explosion risk
Production environment is complicated and changeable, and explosive mixture continuously occurs for a long time, proposes very to the enforcement of dust explosion protection detection technique
Harsh technical requirements, cause detection means and electrical sensor under conventional conditions to be difficult to meet, and therefore study fiber grating
Principle dust detection technique will have important practical usage.
Content of the invention
The technical problem to be solved in the present invention is for defect of the prior art, there is provided a kind of dust concentration and temperature
The fiber grating sensing system for measuring simultaneously and measuring method.
The technical solution adopted for the present invention to solve the technical problems is：
A kind of fiber bragg grating sensing device is provided, including Transmission Fibers, the first optical fiber collimator, the second optical fiber collimator,
Dust box and fiber grating；First optical fiber collimator one end connects Transmission Fibers, the other end and dust box connection, and the second optical fiber is accurate
One end of straight device and dust box connection, the other end connect fiber grating；And first optical fiber collimator and the second optical fiber collimator position
On same straight line, realize that light path is aligned；
The dust box inner hollow, and the dust box is provided with multiple through holes.
In fiber bragg grating sensing device of the present invention, two sides of dust box are provided with and optical fiber collimator external diameter contract
First optical fiber collimator and the second optical fiber collimator are connected by the fixing hole of conjunction by fixing hole.
In fiber bragg grating sensing device of the present invention, the contact surface and dust box of each optical fiber collimator and dust box
Inner surface equal.
Present invention also offers the fiber grating sensing system of a kind of dust concentration and temperature simultaneously measuring, including calculating
The fiber bragg grating sensing device of machine, fiber grating demodulation device and multiple concatenations, its Computer are connected with fiber grating demodulation device
Connect, the fiber bragg grating sensing device of multiple concatenations is connected with fiber grating demodulation device by the first optical fiber grating sensor apparatus
Connect, the fiber bragg grating sensing device be above-mentioned fiber bragg grating sensing device, fiber grating in multiple fiber bragg grating sensing devices
Centre wavelength different.
Present invention also offers a kind of method of dust concentration and temperature simultaneously measuring, the optical fiber grating sensing dress of concatenation
That put has n, and the fiber grating numbering in each fiber bragg grating sensing device is followed successively by 1 to n, and the method specifically includes following step
Suddenly：
The centre wavelength signal of the fiber grating collected according to fiber grating demodulation device and reflectance spectrum strength signal difference
Detection ambient temperature and dust concentration；
The drift value Δ λ i that the centre wavelength for respectively obtaining n fiber grating is demarcated by temperature test, wherein i are whole
Number, and 1≤i≤n, and functional relationship T between ambient temperature (Δ λ i) is obtained, fiber grating sensing system is placed on reality
In test environment, drift value Δ λ i are collected according to fiber grating demodulation device, associative function relation T (Δ λ i) is finally inversed by quilt at n
Survey temperature Ti of environment；
Variation delta Pi and the environment dust of the reflection spectral intensity of n fiber grating is obtained by dust concentration test calibration
Relation C (Δ Pi) between concentration C, for the first fiber bragg grating sensing device, according to the Δ that fiber grating demodulation device is collected
P1, associative function relation C (Δ P1), it is finally inversed by dust concentration C obtained at the first fiber bragg grating sensing device1, as optical fiber light
Dust concentration C at grid sensing device1 is real, for the second fiber bragg grating sensing device, collected according to fiber grating demodulation device
ΔP2, associative function relation C (Δ P2), it is finally inversed by dust concentration C obtained by the second fiber bragg grating sensing device2, but due to entering
The optical signal entered to the second fiber bragg grating sensing device has passed through the first fiber bragg grating sensing device, and its reflected light letter first
Number again by fiber grating demodulation device is just entered after the first fiber bragg grating sensing device, therefore the second fiber bragg grating sensing device
Dust concentration C of place's test environment2 is real=C2–C1；
By that analogy, the dust concentration that all n fiber bragg grating sensing device measurements are obtained is：
C1 is real=C1
C2 is real=C2-C1 is real=C2-C1
C3 is real=C3-C2 is real-C1 is real=C3-(C2-C1 is real)-C1 is real=C3-C2
……
CN realities=Cn-CN-1 realities-……C2 is real-C1 is real=Cn-Cn-1, n >=3.
The fiber grating caused due to the drift of fiber bragg grating center wavelength that caused by temperature change and by dust concentration
Reflectance spectrum Strength Changes amount, the two is independent of each other, and therefore can achieve to measuring while temperature and dust concentration.(increase herein
Measurable narration simultaneously, if it is necessary, please also adjust in the claims)
Dust concentration provided herein and the fiber bragg grating sensing device of temperature simultaneously measuring, are surveyed with existing dust
Amount means are compared, and detection means adopts optical signal, essential safety, and can carry out that multiple measuring points are distributed, real-time monitoring, more sharp
In the Realtime Alerts for relating to powder enterprise safety operation.The measuring method that the application is provided only can be surveyed simultaneously using a fiber grating
Dust concentration and ambient temperature is measured, and two measured parameters are independent of each other, and improve measurement efficiency.
Description of the drawings
Below in conjunction with drawings and Examples, the invention will be further described, in accompanying drawing：
Fig. 1 is the structural representation of embodiment of the present invention fiber bragg grating sensing device；
Fig. 2 is the measuring system schematic diagram of the multiple sensing device compositions of the embodiment of the present invention.
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, fiber bragg grating sensing device includes Transmission Fibers 1, the first optical fiber in one embodiment of the present of invention
The 2, second optical fiber collimator 3 of collimation, dust box 4, fiber grating 5.The connected mode of all parts is：First optical fiber collimator 2
Left side connection Transmission Fibers 1, right side and dust box 4 connect, and connect with dust box 4 on the left of the second optical fiber collimator 3, and right side connects
Fiber grating 5.4 or so two sides of dust box are provided with the fixing hole agreed with optical fiber collimator external diameter, by fixing hole by
One optical fiber collimator 2 and the second optical fiber collimator 3 connect, after being connected, the first optical fiber collimator 2 and the second optical fiber collimator
3 on same straight line, realizes that light path is aligned.
In conjunction with Fig. 2, after the different sensing device series demultiplex of n fiber bragg grating center wavelength, the first optical fiber grating sensing
The first optical fiber collimator in device is connected with fiber grating demodulation device by Transmission Fibers, fiber grating demodulation device and computer
Connection, realizes data acquisition, and the Transmission Fibers in the first sensing device in fiber grating and the second fiber bragg grating sensing device connect
Connect, realize that series connection is also realized in series connection, follow-up sensing device in this manner.
Optical delivery mode is as follows：
For the first fiber bragg grating sensing device, the broadband optical signal that fiber grating demodulation device sends imports the first light
Transmission Fibers in fine grating sensing device, subsequently into the first optical fiber collimator, from the directional light of the first optical fiber collimator output
Again by the second optical fiber collimator being entered after dust box, subsequently enter fiber grating, the certain wave being reflected back by fiber grating
Long reflected light signal returns the second optical fiber collimator, again by dust box after output, subsequently enters the first optical fiber collimator,
Transmission Fibers are entered after output, and last reflected light signal enters fiber grating demodulation device and processed, obtains in fiber grating
Heart wavelength signals and the real time data of reflectance spectrum strength signal；
For the first fiber bragg grating sensing device, its optical signal is that the broadband light that fiber grating demodulation device sends passes through
After fiber grating in first fiber bragg grating sensing device, Transmission Fibers in the second fiber bragg grating sensing device are imported, according still further to
It is accurate that mode mentioned above passes sequentially through the first optical fiber collimator in the second fiber bragg grating sensing device, dust box, the second optical fiber
Straight device, fiber grating, the reflected light signal of the specific wavelength being reflected back by fiber grating pass sequentially through the second optical fiber grating sensing
The second optical fiber collimator, dust box in device, the first optical fiber collimator, Transmission Fibers, then pass through the first optical fiber grating sensing
Device enters fiber grating demodulation device and is processed, and obtains the centre wavelength of the fiber grating in the second fiber bragg grating sensing device
Signal and the real time data of reflectance spectrum strength signal.Optical signal in remaining sensing device equally enters fiber grating by this principle
Demodulator.
Before dust and temperature survey is carried out using the sensing device：
The drift value Δ λ i that temperature test demarcates the centre wavelength for respectively obtaining n fiber grating are first passed through, (wherein i is
Integer, and 1≤i≤n) functional relationship T (Δ λ i) and ambient temperature between, measurement apparatus are placed in actual test environment, according to
The Δ λ i that fiber grating demodulation device Real-time Collection is arrived, associative function relation T (Δ λ i), are finally inversed by the real-time temperature of test environment at n
Degree Ti；
Variation delta Pi and the environment dust of the reflection spectral intensity of n fiber grating is obtained by dust concentration test calibration
Relation C (Δ Pi) between concentration C, for the first fiber bragg grating sensing device, arrives according to fiber grating demodulation device Real-time Collection
Δ P1, associative function relation C (Δ P1), real-time dust concentration C for obtaining is finally inversed by the first fiber bragg grating sensing device1, i.e.,
For dust concentration C at the first fiber bragg grating sensing device1 is real, for the second fiber bragg grating sensing device, according to fiber grating solution
The Δ P for adjusting device to collect2, associative function relation C (Δ P2), it is finally inversed by the dust obtained by the second fiber bragg grating sensing device dense
Degree C2, but the optical signal due to entering into fiber grating 2 has passed through the first fiber bragg grating sensing device, and its reflected light first
Signal again by fiber grating demodulation device is just entered after device 1, therefore test environment at the second fiber bragg grating sensing device
Dust concentration C2 is real=C2–C1, principle accordingly, the real-time dust concentration that all n sensing device measurements are obtained is：
C1 is real=C1
C2 is real=C2-C1 is real=C2-C1
C3 is real=C3-C2 is real-C1 is real=C3-(C2-C1 is real)-C1 is real=C3-C2
……
CN realities=Cn-CN-1 realities-……C2 is real-C1 is real=Cn-Cn-1(n≥3)
The real-time monitoring of temperature and dust concentration distributed measuring point can achieve.
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 should all belong to the protection domain of claims of the present invention.
Claims (5)
1. a kind of fiber bragg grating sensing device, it is characterised in that accurate including Transmission Fibers, the first optical fiber collimator, the second optical fiber
Straight device, dust box and fiber grating；First optical fiber collimator one end connects Transmission Fibers, and the other end and dust box connect, and second
One end of optical fiber collimator and dust box connection, the other end connect fiber grating；And first optical fiber collimator and the second optical fiber accurate
Straight device is located on the same line, and realizes that light path is aligned；
The dust box inner hollow, and the dust box is provided with multiple through holes.
2. fiber bragg grating sensing device according to claim 1, it is characterised in that two sides of dust box are provided with and light
First optical fiber collimator and the second optical fiber collimator are connected by the fixing hole that fine collimator external diameter agrees with by fixing hole.
3. fiber bragg grating sensing device according to claim 1, it is characterised in that each optical fiber collimator and dust box
Contact surface is equal with the inner surface of dust box.
4. the fiber grating sensing system of a kind of dust concentration and temperature simultaneously measuring, it is characterised in that including computer, optical fiber
Grating demodulation device and the fiber bragg grating sensing device of multiple concatenations, its Computer is connected with fiber grating demodulation device, multiple
The fiber bragg grating sensing device of concatenation is connected with fiber grating demodulation device by the first optical fiber grating sensor apparatus, the light
Fine grating sensing device is the fiber bragg grating sensing device any one of claim 1-3, multiple optical fiber grating sensing dresses
The centre wavelength for putting middle fiber grating is different.
5. a kind of method of the dust concentration and temperature simultaneously measuring based on claim 4, it is characterised in that the optical fiber light of concatenation
Grid sensing device has n, and the fiber grating numbering in each fiber bragg grating sensing device is followed successively by 1 to n, the method is specifically wrapped
Include following steps：
The centre wavelength signal and reflectance spectrum strength signal of the fiber grating collected according to fiber grating demodulation device is detected respectively
Ambient temperature and dust concentration；
The drift value Δ λ i that the centre wavelength for respectively obtaining n fiber grating is demarcated by temperature test, wherein i are integer, and 1
≤ i≤n, and functional relationship T between ambient temperature (Δ λ i) is obtained, fiber grating sensing system is placed on actual tested ring
In border, drift value Δ λ i are collected according to fiber grating demodulation device, associative function relation T (Δ λ i) is finally inversed by test environment at n
Temperature Ti；
Variation delta Pi and environment dust concentration of the reflection spectral intensity of n fiber grating is obtained by dust concentration test calibration
Relation C (Δ Pi) between C, for the first fiber bragg grating sensing device, according to the Δ P that fiber grating demodulation device is collected1, knot
Close functional relationship C (Δ P1), it is finally inversed by dust concentration C obtained at the first fiber bragg grating sensing device1, as fiber grating pass
Dust concentration C at induction device1 is real, for the second fiber bragg grating sensing device, according to the Δ P that fiber grating demodulation device is collected2,
Associative function relation C (Δ P2), it is finally inversed by dust concentration C obtained by the second fiber bragg grating sensing device2, but due to entering into
The optical signal of the second fiber bragg grating sensing device has passed through the first fiber bragg grating sensing device first, and its reflected light signal is again
Secondary just enter fiber grating demodulation device after the first fiber bragg grating sensing device, therefore quilt at the second fiber bragg grating sensing device
Survey dust concentration C of environment2 is real= C2–C1；
By that analogy, the dust concentration that all n fiber bragg grating sensing device measurements are obtained is：
C1 is real=C1
C2 is real=C2- C1 is real= C2- C1
C3 is real=C3- C2 is real- C1 is real= C3-（C2- C1 is real）- C1 is real= C3- C2
……
CN realities=Cn- CN-1 realities- …… C2 is real- C1 is real= Cn- Cn-1, n >=3.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109443445A (en) * | 2018-12-18 | 2019-03-08 | 苏州同阳科技发展有限公司 | A kind of particulate matter on-Line Monitor Device and method |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20060133714A1 (en) * | 2003-03-31 | 2006-06-22 | Sappey Andrew D | Method and apparatus for the monitoring and control of combustion |
| CN1940532A (en) * | 2006-09-25 | 2007-04-04 | 重庆工学院 | Microcavity double-grating and optical-fiber gas sensing system and method |
| CN200950118Y (en) * | 2006-09-25 | 2007-09-19 | 重庆工学院 | Distributed fiber micro-cavity mash gas sensing system |
| CN102288555A (en) * | 2011-07-26 | 2011-12-21 | 山西维力科技有限责任公司 | Bijection type high-temperature smoke sensor and real-time detection method |
| CN102288226A (en) * | 2011-07-29 | 2011-12-21 | 中国科学院光电技术研究所 | Multi-state gas-liquid optical fiber sensor for simultaneously detecting pressure, temperature and component concentration |
| CN104330388A (en) * | 2014-11-17 | 2015-02-04 | 四川鼎林信息技术有限公司 | Haze detector and haze detection method |
-
2016
- 2016-11-23 CN CN201611050775.5A patent/CN106500773A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20060133714A1 (en) * | 2003-03-31 | 2006-06-22 | Sappey Andrew D | Method and apparatus for the monitoring and control of combustion |
| CN1940532A (en) * | 2006-09-25 | 2007-04-04 | 重庆工学院 | Microcavity double-grating and optical-fiber gas sensing system and method |
| CN200950118Y (en) * | 2006-09-25 | 2007-09-19 | 重庆工学院 | Distributed fiber micro-cavity mash gas sensing system |
| CN102288555A (en) * | 2011-07-26 | 2011-12-21 | 山西维力科技有限责任公司 | Bijection type high-temperature smoke sensor and real-time detection method |
| CN102288226A (en) * | 2011-07-29 | 2011-12-21 | 中国科学院光电技术研究所 | Multi-state gas-liquid optical fiber sensor for simultaneously detecting pressure, temperature and component concentration |
| CN104330388A (en) * | 2014-11-17 | 2015-02-04 | 四川鼎林信息技术有限公司 | Haze detector and haze detection method |
Non-Patent Citations (1)
| Title |
|---|
| 刘小虎等: "激光粉尘浓度测量系统中关键参数的分析设计", 《机械与电子》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109443445A (en) * | 2018-12-18 | 2019-03-08 | 苏州同阳科技发展有限公司 | A kind of particulate matter on-Line Monitor Device and method |
| CN109443445B (en) * | 2018-12-18 | 2023-10-27 | 苏州同阳科技发展有限公司 | Online monitoring device and method for particulate matters |
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