CN109540752A - A kind of dust detector and its calibration method - Google Patents
A kind of dust detector and its calibration method Download PDFInfo
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- CN109540752A CN109540752A CN201811591462.XA CN201811591462A CN109540752A CN 109540752 A CN109540752 A CN 109540752A CN 201811591462 A CN201811591462 A CN 201811591462A CN 109540752 A CN109540752 A CN 109540752A
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- 239000000428 dust Substances 0.000 title claims abstract description 28
- 238000000034 method Methods 0.000 title claims description 8
- 238000012545 processing Methods 0.000 claims abstract description 22
- 238000011109 contamination Methods 0.000 claims abstract description 12
- 230000005540 biological transmission Effects 0.000 claims description 20
- 238000005259 measurement Methods 0.000 claims description 14
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 9
- 229910052802 copper Inorganic materials 0.000 claims description 9
- 239000010949 copper Substances 0.000 claims description 9
- 238000002834 transmittance Methods 0.000 claims description 9
- 230000003287 optical effect Effects 0.000 claims description 6
- 239000000523 sample Substances 0.000 claims description 5
- 238000009434 installation Methods 0.000 claims description 4
- 239000002245 particle Substances 0.000 claims description 3
- 210000003516 pericardium Anatomy 0.000 claims description 3
- 239000007787 solid Substances 0.000 claims 1
- 238000001514 detection method Methods 0.000 abstract description 4
- 239000003500 flue dust Substances 0.000 abstract description 3
- 239000007789 gas Substances 0.000 description 8
- 238000012423 maintenance Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 230000003321 amplification Effects 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 3
- 238000004891 communication Methods 0.000 description 3
- 238000005260 corrosion Methods 0.000 description 3
- 230000007797 corrosion Effects 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 238000012544 monitoring process Methods 0.000 description 3
- 238000003199 nucleic acid amplification method Methods 0.000 description 3
- 229910000838 Al alloy Inorganic materials 0.000 description 2
- 238000000605 extraction Methods 0.000 description 2
- 238000001914 filtration Methods 0.000 description 2
- 238000010926 purge Methods 0.000 description 2
- 230000004044 response Effects 0.000 description 2
- 238000009738 saturating Methods 0.000 description 2
- 230000035945 sensitivity Effects 0.000 description 2
- 239000010935 stainless steel Substances 0.000 description 2
- 229910001220 stainless steel Inorganic materials 0.000 description 2
- 231100000331 toxic Toxicity 0.000 description 2
- 230000002588 toxic effect Effects 0.000 description 2
- 239000004215 Carbon black (E152) Substances 0.000 description 1
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 239000003546 flue gas Substances 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 229930195733 hydrocarbon Natural products 0.000 description 1
- 150000002430 hydrocarbons Chemical class 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000000691 measurement method Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000000505 pernicious effect Effects 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000005070 sampling Methods 0.000 description 1
- 238000000790 scattering method Methods 0.000 description 1
- 239000004071 soot Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N15/00—Investigating characteristics of particles; Investigating permeability, pore-volume or surface-area of porous materials
- G01N15/06—Investigating concentration of particle suspensions
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- Chemical & Material Sciences (AREA)
- Dispersion Chemistry (AREA)
- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Investigating Or Analysing Materials By Optical Means (AREA)
Abstract
The invention discloses a kind of dust detector, including two infrared transceivers, two blowback devices, two dynamic calibration apparatus, a power supply, a signal-data processing unit and a displays；Two infrared transceivers are oppositely arranged on the two sides of flue, and one end of blowback device is connected with infrared transceiver, and the other end is connected with dynamic calibration apparatus, and one end of dynamic calibration apparatus is connect with flue sidewall；Power supply is connected with infrared transceiver, signal-data processing unit, blowback device and display electric appliance respectively；Signal-data processing unit and infrared transceiver electrical connection, the present invention can improve the precision of flue dust detection by removing lens contamination.
Description
Technical field
The invention belongs to exhaust gas dust detection technique field more particularly to a kind of dust detectors and its calibration method.
Background technique
In smelter, chemical company and other industrial enterprises, the detection to air flue soot dust flue gas is always environment dirt
The most important thing of dye source monitoring.Air flue emission gas is the mixture of a large amount of high temperature, toxic, pernicious gas and flue dust, and ingredient is very
Complexity, includes SO2, CO, CO2, hydrocarbon and oxynitrides etc. in gas, flue dust include the ash content of fuel, matchmaker's grain,
Oil droplet and high-temperature split product etc..Online dust instrument is that toxic mordant gas is measured in the environment of flue high temperature
Body, needs that corrosion-resistant, high temperature resistant, high sensitivity, response is fast, is easily installed the features such as maintenance, so, measurement difficulty is big.
There are two types of traditional measurement method is general: a kind of extraction-type measurement contains from region extraction to be measured is representative
Dirt sample pneumatic transmission enters analysis system and measures, the disadvantage is that trivial operations, precision is low, and the sampling time is long, and maintenance cost is high, Wu Fayong
In on-line monitoring；Another non-extraction-type, directly measures dust concentration using characteristics such as the physics of dust, chemistry, at present more
Easy to operate the most commonly used is scattering method, IR transmission method, precision is high, can be monitored on-line, but online measurement, equipment
It is directly installed on flue, eyeglass seriously affects measurement accuracy and maintenance cost is high vulnerable to pollution.
Generally speaking, traditional online IR transmission method dust instrument eyeglass is easy to pollute, seriously affects measurement accuracy and dimension
It protects costly.
Summary of the invention
The present invention mainly solves technical problem present in the prior art, provides a kind of dust detector, can be to inspection
It surveys precision and realizes dynamic calibration.
Above-mentioned technical problem of the invention is mainly to be addressed by following technical proposals:
A kind of dust detector of the invention, including two infrared transceivers, two blowback devices, two dynamic calibration dresses
It sets, a power supply, a signal-data processing unit and a display；Two infrared transceivers are oppositely arranged on the two of flue
One end of side, blowback device is connected with infrared transceiver, and the other end is connected with dynamic calibration apparatus, one end of dynamic calibration apparatus with
Flue sidewall connection；Power supply is connected with infrared transceiver, signal-data processing unit, blowback device and display electric appliance respectively；
Signal-data processing unit and the electrical connection of infrared transceiver and display.
Further, the infrared transceiver includes bell-jar, infrared detector, transmission circuit, convex lens and flange
Disk；The ring flange is fixedly connected with the bottom of bell-jar, and the center of ring flange is arranged in convex lens, and transmission circuit passes through column
It is fixed on ring flange, infrared detector is fixed on the lower section of transmission circuit and is electrically connected with transmission circuit, infrared detector
Probe face convex lens center；Shielding line one end is connected with transmission circuit, and the other end is pierced by from bell-jar top open part
It is connect with signal-data processing unit.
Further, waterproof connector is equipped in bell-jar top open part.
Further, it is equipped with " O-ring seal " in the junction of the upper end lug boss of ring flange and ring flange, convex lens is logical
The disk cover crossed below ring flange is pressed abd fixed on ring flange.
Further, the dynamic calibration apparatus includes valve body, pneumatic actuator, solenoid valve and T-shape copper sleeve；Institute
It states valve body to be connected with pneumatic actuator, solenoid valve side is connected with pneumatic actuator, and the other side is connected with T-shape copper sleeve, valve
The side of body is connected with blowback device, and the other side is connected with flue.
Further, the inner valve pericardium of affiliated valve body includes index plane and non-standard face, and index plane is the logical of diameter 50mm
Unthreaded hole, non-standard face are the light hole of diameter 30mm, and reflective mirror is equipped on diameter 30mm light hole.
Further, compressed air, compressed air are accessed by the external air compressor machine of tracheae in one end of the T-shape copper sleeve
All the way for controlling solenoid valve, another way supplies blowback device.
The beneficial effects of the present invention are:
1, the present invention measures dust particles concentration using the infrared transmission principle with dynamic compensation, and structure is simple, valence
Lattice are cheap, are suitable for popularization and application.
2, since the measurement of infrared sensor is contactless and high sensitivity, response are fast, shell is all using protection etc.
The aluminum alloy materials of grade IP68, so high-precision, corrosion-resistant, high temperature resistant, the online dust concentration of low error can be achieved in the present invention
Measurement.
3, instrument of the invention is plug-type, and disassembly, maintenance, clean operation are simple, convenient, and the cost of maintenance is low.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
Some embodiments of invention for those of ordinary skill in the art without creative efforts, can be with
It obtains other drawings based on these drawings.
Fig. 1 is a kind of structural schematic diagram of dust detector of the present invention；
Fig. 2 is the structural schematic diagram of infrared transceiver in the present invention；
Fig. 3 is the structural schematic diagram of dynamic calibration apparatus in the present invention；
Fig. 4 is a kind of circuit structure block diagram of dust detector of the present invention.
Specific embodiment
The preferred embodiment of the present invention is described in detail with reference to the accompanying drawing, so that advantages and features of the invention energy
It is easier to be readily appreciated by one skilled in the art, so as to make a clearer definition of the protection scope of the present invention.
As Figure 1-Figure 4, a kind of dust detector, including two infrared transceivers 1, two blowback devices, 2, two dynamics
The signal-data processing unit 4 of power supply 7, one of calibrating installation 3, one and a display 6；Two infrared transceivers 1 are opposite to be set
It sets in the two sides of flue, one end of blowback device 2 and infrared transceiver 1 connect, and the other end and dynamic calibration apparatus 3 connect, dynamic
One end of calibrating installation 3 is connect with flue sidewall；Power supply respectively with infrared transceiver 1, signal-data processing unit 4, blowback device 2
And 6 electric appliance of display connection；Signal-data processing unit 4 and the electrical connection of infrared transceiver 1 and display 6.
Signal-data processing unit 4 includes signal processing unit and data display unit, is arranged in a box.On
The shell for stating each component all uses the aluminum alloy casing material of corrosion-resistant high temperature resistant degree of protection IP68.
Further, the infrared transceiver 1 includes bell-jar 9, infrared detector 10, transmission circuit 11, convex lens 12
And ring flange 13；The ring flange 13 is fixedly connected with the bottom of bell-jar 9, and convex lens 12 is arranged in ring flange 13
The heart, transmission circuit 11 are fixed on ring flange 13 by column, infrared detector 10 be fixed on the lower section of transmission circuit 11 and with
Transmission circuit 11 is electrically connected, the center of the probe face convex lens 12 of infrared detector 10；5 one end of shielding line and transmission circuit
11 are connected, and the other end is pierced by from 9 top open part of bell-jar and connect with signal-data processing unit 4.
Further, waterproof connector 8 is equipped in 9 top open part of bell-jar.
In order to guarantee the leakproofness in bell-jar 9, set in the upper end lug boss of ring flange 13 and the junction of ring flange 13
There is " O-ring seal " 14, convex lens 12 is pressed abd fixed on ring flange 13 by the disk cover 19 of 13 lower section of ring flange.
Further, the dynamic calibration apparatus 3 includes valve body 18, pneumatic actuator 15, solenoid valve 16 and T-shape copper
Connector 17；The valve body 18 is connected with pneumatic actuator 15, and 16 side of solenoid valve is connected with pneumatic actuator 15, the other side with
T-shape copper sleeve 17 is connected, and the side of valve body 18 is connected with blowback device 2, and the other side is connected with flue.
Further, the inner valve pericardium of affiliated valve body 18 includes index plane and non-standard face, and index plane is diameter 50mm's
Light hole, non-standard face diameter are the light hole of 30mm, and reflective mirror is equipped on diameter 30mm light hole.
Further, one end of the T-shape copper sleeve 17 is used to control all the way by the external air compressor machine of tracheae, compressed air
Solenoid valve processed, another way supply blowback device 2.
When use, the present invention two are located at identical infrared transceiver (the first infrared transceiver, the of flue two sides
Two) it forms,
The transmissivity of first infrared transceiver to the second infrared transceiver light is expressed from the next:
τ12=K1(Dγ2/Dt1)
The transmissivity of second infrared transceiver to the first infrared transceiver light is expressed from the next:
τ21=K2(Dγ1/Dt2)
The total transmittance (τ) of system are as follows:
Wherein, K1For the gain constant of transmissivity absolutely the first infrared transceiver in the state of clean air, K2
For the gain constant of transmissivity absolutely red second infrared transceiver in the state of clean air, Dγ1It is infrared for first
The reception light intensity of transceiver, Dγ2For the reception light intensity of red second infrared transceiver, Dt1For the reflected light of the first infrared transceiver
By force, Dt2For the reflective light intensity of red second infrared transceiver.
Above formula can also be written as:
As available from the above equation, K1、K2For constant, each item is only measured from a transmitting receiving unit, is received with another transmitting
The drift of unit is unrelated, since eyeglass is easy to pollute in measurement process, changes light transmittance, seriously affects measurement result, the present invention
A kind of dynamic calibration apparatus is designed, real-time monitoring lens contamination degree is changed by on-line measurement light transmittance, corrects transmissivity measurement
As a result.
By taking the first infrared transceiver as an example, when measurement, valve body is located at index plane, and the infrared light of the first infrared transceiver passes through
Valve core 50mm light hole is received by the second infrared transceiver；When calibration, valve body rotation makes valve body be located at non-standard face, first is red
The infrared light of outer transceiver passes through after valve core 30mm light hole through mirror reflection, red by first after reflected in parallel returns convex lens
The detector of outer transceiver receives optical signal, therefore:
Wherein, DtOptical signal transmissive when to measure；Reflected light signal when to calibrate；C is constant, is optical signal through saturating
The ratio between signal received by detector and sending light signal after mirror；τ1For the light transmittance of the first infrared transceiver.
When lens are clean, τ1=1, optical signal transmissive is measured, therefore:
Therefore
By above formula, reflected light signal when passing through calibrationThe light transmittance of pollution eyeglass is calculated, while first is infrared
Transceiver lens contamination degree can be calculated as roughly 1- τ1, and the second infrared transceiver receives the first infrared transceiver principle phase with transmitting
Together, can obtain the second infrared transceiver lens contamination degree can be calculated as roughly 1- τ2, to sum up, when calibration, can be filled by dynamic calibration
It sets to obtain the lens contamination degree of two infrared transceivers 1, the dust particles for correcting real-time online measuring by lens contamination degree are saturating
Light rate.
Dynamic calibration apparatus uses timing alignment operating mode in the present invention, is arranged between prover time according to actual condition
Every general recommendations 2 hours 1 time, specific prover time interval can be arranged by data display unit, this instrument is changed by valve body
Darkening road lens contamination degree is measured, to calibrate light transmittance by measurement lens transmission light and the signal contrast of reflected light.
Blowback device 2 is made of blowback body and its internal even device of air, and it is infrared hair that backflush unit, which provides compressed gas purging,
Unit eyeglass is penetrated, as far as possible reduction lens contamination, wherein blowback body uses Stainless steel 316 L material, and inside has an even gas dress
It sets；Wherein even device of air is waveform plane body, also uses Stainless steel 316 L material, the anhydrous nothing of 4-6KPa is passed through into blowback body
The clean compressed air of dirt is blown into the waveform plane through even device of air at a certain angle, makes gas as far as possible uniformly by dynamic
The convex lens 12 of state calibrating installation post-purge infrared transceiver, takes away the pollutant on eyeglass.
Signal processing unit by amplifying circuit, modulus conversion chip and a singlechip group at.Infrared receiver will detect
The signal arrived is after amplification filtering, input signal probe unit.In signal detection unit, first by signal by amplification filtering
Wherein common-mode noise is removed, then carries out digital-to-analogue conversion and converts analog signals into digital signal, it is finally that digital signal is incoming single
Piece machine.
Data display unit is shown by microcomputer, LCD, operation panel forms.Wherein, microcomputer is monolithic meter
Calculation machine, the display output port of the single-chip microcontroller are connected to LCD and show, I/O interface is connected with key, while also having 485 communication ends
Mouth, 232 communication port and 4-20mA output port；LCD display can show various character Chinese characters and figure, with the direct phase of single-chip microcontroller
It connects；There are two LED light and four keys for operation panel setting: Mode key, "enter" key", ↑ key, ↓ key.
The signal in flue that infrared detector 10 in each bell jar 9 detects, which first passes through analog switch, (normally to be made
Used time switch conduction), then pass through filter and amplification, will receive more faint and be submerged in low frequency signal extraction in high-frequency noise
And amplify, it is converted using analog/digital converter and obtained analog signal is converted into digital signal, be input to responsible signal
The first singlechip of processing unit (signal processing unit includes first singlechip).The two paths of signals that first singlechip will receive
It is calculated by algorithm, calculates dust concentration, finally send the second monolithic that control signal output is shown with LCD for acquired results
Machine (data display unit includes second singlechip).In addition the temperature signal that temperature sensor is measured in bell jar passes through number/mould
Second singlechip will be also transferred to after quasi- conversion and first singlechip processing.Signal is by the further of second singlechip
It after processing, can be directly displayed by LCD display panel, be shown after can also being connect by 485 or 232 communication modes with host computer
Show on host computer, can also be exported by 4~20mA mode, controls other controllable instruments.
The above description is merely a specific embodiment, but scope of protection of the present invention is not limited thereto, any
The change or replacement expected without creative work, should be covered by the protection scope of the present invention.Therefore, of the invention
Protection scope should be determined by the scope of protection defined in the claims.
Claims (8)
1. a kind of dust detector, it is characterised in that: including two infrared transceivers (1), two blowback devices (2), two dynamics
Calibrating installation (3), a power supply (7), a signal-data processing unit (4) and a display (6)；Two infrared transceivers
(1) two sides of flue, one end of blowback device (2) and infrared transceiver (1) connection, the other end and dynamic calibration dress are oppositely arranged on
(3) connection is set, one end of dynamic calibration apparatus (3) is connect with flue sidewall；Power supply respectively with infrared transceiver (1), signal number
It is connected according to processing unit (4), blowback device (2) and display (6) electric appliance；Signal-data processing unit (4) and infrared transceiver
(1) and display (6) is electrically connected.
2. a kind of dust detector according to claim 1, it is characterised in that: the infrared transceiver (1) includes bell
Cover (9), infrared detector (10), transmission circuit (11), convex lens (12) and ring flange (13)；The ring flange (13) and clock
The bottom of shape cover (9) is fixedly connected, and at the center of ring flange (13), transmission circuit (11) is solid by column for convex lens (12) setting
It is scheduled on ring flange (13), infrared detector (10) is fixed on the lower section of transmission circuit (11) and electrically connects with transmission circuit (11)
It connects, the center of the probe face convex lens (12) of infrared detector (10)；Shielding line (5) one end is connected with transmission circuit (11),
The other end is pierced by from bell-jar (9) top open part and connect with signal-data processing unit (4).
3. a kind of dust detector according to claim 2, it is characterised in that: in bell-jar (9), top open part is equipped with
Waterproof connector (8).
4. a kind of dust detector according to claim 2, it is characterised in that: ring flange (13) upper end lug boss with
The junction of ring flange (13) is equipped with " O-ring seal " (14), and convex lens (12) passes through the disk cover (19) below ring flange (13)
It is pressed abd fixed on ring flange (13).
5. a kind of dust detector according to claim 1, it is characterised in that: the dynamic calibration apparatus (3) includes valve
Body (18), pneumatic actuator (15), solenoid valve (16) and T-shape copper sleeve (17)；The valve body (18) and pneumatic actuator
(15) it is connected, solenoid valve (16) side is connected with pneumatic actuator (15), and the other side is connected with T-shape copper sleeve (17), valve body
(18) side is connected with blowback device (2), and the other side is connected with flue.
6. a kind of dust detector according to claim 5, it is characterised in that: the inner valve pericardium of affiliated valve body (18) includes
Index plane and non-standard face, index plane are the light hole of diameter 50mm, and non-standard face is the light hole of diameter 30mm, in the diameter
30mm light hole is equipped with reflective mirror.
7. a kind of dust detector according to claim 5, it is characterised in that: one end of the T-shape copper sleeve (17)
Compressed air is accessed by the external air compressor machine of tracheae, compressed air is used to control all the way solenoid valve, and another way supplies blowback device
(2)。
8. a kind of dust detector calibration method characterized by comprising when measurement, valve body (18) is located at index plane, and first is red
The infrared light of outer transceiver is received by valve core 50mm light hole by the second infrared transceiver；When calibration, valve body (18) rotation makes
Valve body (18) is located at non-standard face, the infrared light of the first infrared transceiver by after valve core 30mm light hole through mirror reflection,
After reflected in parallel goes back to convex lens (12), optical signal is received by the detector of the first infrared transceiver, therefore:
Wherein, DtOptical signal transmissive when to measure；Reflected light signal when to calibrate；C is constant, is optical signal planoconvex lens
(12) signal received by detector and the ratio between light signal is issued afterwards；τ1For the light transmittance of the first infrared transceiver.
When convex lens (12) is clean, τ1=1, optical signal transmissive is measured, therefore:
Therefore
By above formula, reflected light signal when passing through calibrationCalculate the light transmittance of pollution eyeglass, while the first infrared transceiver
Lens contamination degree can be calculated as roughly 1- τ1, the second infrared transceiver is identical with transmitting the first infrared transceiver principle of reception, similarly
The second infrared transceiver lens contamination degree, which can be obtained, can be calculated as roughly 1- τ2, when calibration, two can be obtained by dynamic calibration apparatus
The lens contamination degree of a infrared transceiver 1 corrects the dust particles light transmittance of real-time online measuring by lens contamination degree.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811591462.XA CN109540752B (en) | 2018-12-25 | 2018-12-25 | Dust detector and calibration method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811591462.XA CN109540752B (en) | 2018-12-25 | 2018-12-25 | Dust detector and calibration method thereof |
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| CN109540752A true CN109540752A (en) | 2019-03-29 |
| CN109540752B CN109540752B (en) | 2024-02-27 |
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|---|---|---|---|---|
| JP2005172636A (en) * | 2003-12-11 | 2005-06-30 | Shimadzu Corp | Dust meter |
| CN2751300Y (en) * | 2004-05-28 | 2006-01-11 | 锦州华冠环境科技实业公司 | Embedded multifunctional smoke dust online monitoring system |
| CN102262061A (en) * | 2011-04-26 | 2011-11-30 | 中国人民解放军军事医学科学院卫生装备研究所 | Method and device for detecting concentration of chlorine dioxide gas on line |
| CN103439233A (en) * | 2013-08-30 | 2013-12-11 | 苏州奥德克光电有限公司 | Flue dust concentration detection system |
| CN104897591A (en) * | 2015-06-08 | 2015-09-09 | 苏州谱道光电科技有限公司 | Sample measuring device |
| US20150338205A1 (en) * | 2012-11-09 | 2015-11-26 | Tsinghua University | Heterodyne grating interferometer displacement measurement system |
| CN107478554A (en) * | 2017-07-27 | 2017-12-15 | 中绿环保科技股份有限公司 | Dust measurement sensor |
| CN209542378U (en) * | 2018-12-25 | 2019-10-25 | 苏州曼德克光电有限公司 | A kind of dust detector |
-
2018
- 2018-12-25 CN CN201811591462.XA patent/CN109540752B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005172636A (en) * | 2003-12-11 | 2005-06-30 | Shimadzu Corp | Dust meter |
| CN2751300Y (en) * | 2004-05-28 | 2006-01-11 | 锦州华冠环境科技实业公司 | Embedded multifunctional smoke dust online monitoring system |
| CN102262061A (en) * | 2011-04-26 | 2011-11-30 | 中国人民解放军军事医学科学院卫生装备研究所 | Method and device for detecting concentration of chlorine dioxide gas on line |
| US20150338205A1 (en) * | 2012-11-09 | 2015-11-26 | Tsinghua University | Heterodyne grating interferometer displacement measurement system |
| CN103439233A (en) * | 2013-08-30 | 2013-12-11 | 苏州奥德克光电有限公司 | Flue dust concentration detection system |
| CN104897591A (en) * | 2015-06-08 | 2015-09-09 | 苏州谱道光电科技有限公司 | Sample measuring device |
| CN107478554A (en) * | 2017-07-27 | 2017-12-15 | 中绿环保科技股份有限公司 | Dust measurement sensor |
| CN209542378U (en) * | 2018-12-25 | 2019-10-25 | 苏州曼德克光电有限公司 | A kind of dust detector |
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| CN109540752B (en) | 2024-02-27 |
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