CN105466877A - Gas concentration measuring system in ultraviolet gas analyzer - Google Patents
Gas concentration measuring system in ultraviolet gas analyzer Download PDFInfo
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- CN105466877A CN105466877A CN201610017479.9A CN201610017479A CN105466877A CN 105466877 A CN105466877 A CN 105466877A CN 201610017479 A CN201610017479 A CN 201610017479A CN 105466877 A CN105466877 A CN 105466877A
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- ultraviolet
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- 239000007789 gas Substances 0.000 claims abstract description 78
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims abstract description 28
- 229910052760 oxygen Inorganic materials 0.000 claims abstract description 28
- 239000001301 oxygen Substances 0.000 claims abstract description 28
- 238000004891 communication Methods 0.000 claims abstract description 12
- 238000005259 measurement Methods 0.000 claims description 18
- 238000005070 sampling Methods 0.000 claims description 16
- 230000003993 interaction Effects 0.000 claims description 9
- 230000003287 optical effect Effects 0.000 claims description 9
- 239000000835 fiber Substances 0.000 claims description 8
- 238000003825 pressing Methods 0.000 claims description 8
- 230000036541 health Effects 0.000 claims description 7
- 230000003750 conditioning effect Effects 0.000 abstract description 8
- 230000003595 spectral effect Effects 0.000 abstract description 8
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 abstract description 3
- 239000003546 flue gas Substances 0.000 abstract description 3
- 238000001514 detection method Methods 0.000 abstract description 2
- 239000013307 optical fiber Substances 0.000 abstract 1
- 238000000034 method Methods 0.000 description 12
- RAHZWNYVWXNFOC-UHFFFAOYSA-N Sulphur dioxide Chemical compound O=S=O RAHZWNYVWXNFOC-UHFFFAOYSA-N 0.000 description 6
- 238000010521 absorption reaction Methods 0.000 description 6
- 230000008569 process Effects 0.000 description 6
- 230000007613 environmental effect Effects 0.000 description 5
- 238000000862 absorption spectrum Methods 0.000 description 4
- 230000008859 change Effects 0.000 description 4
- 238000012544 monitoring process Methods 0.000 description 4
- 238000004458 analytical method Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 238000012545 processing Methods 0.000 description 3
- MYMOFIZGZYHOMD-UHFFFAOYSA-N Dioxygen Chemical compound O=O MYMOFIZGZYHOMD-UHFFFAOYSA-N 0.000 description 2
- 238000002795 fluorescence method Methods 0.000 description 2
- 230000005283 ground state Effects 0.000 description 2
- 238000004611 spectroscopical analysis Methods 0.000 description 2
- 238000001228 spectrum Methods 0.000 description 2
- YZCKVEUIGOORGS-OUBTZVSYSA-N Deuterium Chemical compound [2H] YZCKVEUIGOORGS-OUBTZVSYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 229910052805 deuterium Inorganic materials 0.000 description 1
- 238000003113 dilution method Methods 0.000 description 1
- 230000005281 excited state Effects 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 230000010365 information processing Effects 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000000474 nursing effect Effects 0.000 description 1
- 230000000171 quenching effect Effects 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
- G01N21/25—Colour; Spectral properties, i.e. comparison of effect of material on the light at two or more different wavelengths or wavelength bands
- G01N21/31—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry
- G01N21/33—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry using ultraviolet light
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- Physics & Mathematics (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material 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)
- Investigating, Analyzing Materials By Fluorescence Or Luminescence (AREA)
Abstract
The invention discloses a gas concentration measuring system in an ultraviolet gas analyzer and belongs to the technical field of flue gas detection. The gas concentration measuring system in the ultraviolet gas analyzer can achieve the technical purpose that the measuring precision is high. According to the adopted technical scheme, the gas concentration measuring system in the ultraviolet gas analyzer comprises a closed air chamber and a light source, an optical fiber sensor is arranged at one end of the closed air chamber and connected with a spectrometer, a temperature sensor, an oxygen sensor, an air outlet pipe and an air inlet pipe are arranged on the closed air chamber, and a control circuit board comprises a master controller and a temperature signal conditioning and collecting circuit, an oxygen signal conditioning and collecting circuit, a light source control circuit, a pipeline control circuit, a key recognition circuit, a communication interface circuit, a display screen display control circuit and a spectral signal collecting and control circuit which are all connected with the master controller.
Description
Technical field
Gas concentration measurement system in ultraviolet gas analyzer of the present invention, belongs to the technical field of flue gas inspection.
Background technology
At present, gas analyzer existing on the market mainly utilizes ultraviolet fluorescence method and tunable laser method, ultraviolet fluorescence method can be used for measuring sulphuric dioxide, its principle is that the ultraviolet lighting near 190 ~ 230nm is when being mapped to tested gas, sulfur dioxide molecule absorbs the energy of ultraviolet light, and molecule was subject to exciting and sends fluorescence when high level returns ground state; N2, O2 in air do not cause " fluorescent quenching effect " substantially, the SO2 of excited state returns ground state mainly through fluorescence process, utilize photomultiplier to receive the fluorescence sent out, Ultraluminescence is sent out the monitoring sensitivity of SO2 very high, and fluorescent intensity size can reflect the concentration of sulphuric dioxide; The method can monitor the low concentration SO 2 of the ppb order of magnitude, and dynamic range and the linearity are very well simultaneously, are therefore used for quality of air environment monitoring, but when being applied in flue gas monitoring, need to be equipped with dilution method sampling thief, system is very complicated.
Tunable laser (TunableLaser), refer to the laser instrument that can continuously change laser output wavelength within the specific limits, this laser instrument of many uses, can be used for spectroscopy, photochemistry, medical science, biology, integrated optics, pollution monitoring, semiconductor material processing, information processing and communicates; Due to laser wavelength wide coverage, intensity is large, spectral line is narrow, may be used for the detection of multiple gases, generally has two kinds of working methods: a kind of is the back scattering utilizing tested gas, obtain dusty gas distribution spatially, based on differential absorption lidar technology, another kind utilizes the mean concentration on reverberator acquisition light path direction, and transmitted light and utilizing emitted light meet langbobier law, the advantage of the method almost can measure all gas, responds fast precision high.Shortcoming is that the cost of the tunable laser of middle infrared is too high, and gas with various detects need be equipped with Different Light, and the absorption line strengths that the laser instrument of near-infrared region produces is lower, is unfavorable for measuring.
Summary of the invention
The present invention overcomes the deficiency that prior art exists, and technical matters to be solved is: provide gas concentration measurement system in the ultraviolet gas analyzer that a kind of measuring accuracy is higher.
In order to solve the problems of the technologies described above, the technical solution used in the present invention is: gas concentration measurement system in ultraviolet gas analyzer, comprise: for deposit gas sealed gas chamber and for the light source to emitting parallel light in air chamber, one end of described sealed gas chamber is provided with the Fibre Optical Sensor for receiving directional light, described Fibre Optical Sensor is connected with spectrometer, described sealed gas chamber is provided with temperature sensor, oxygen sensor, escape pipe and draft tube, described temperature sensor, oxygen sensor and spectrometer are all connected with described control circuit board, described control circuit board is also connected with light source by light source driving circuit plate, described control circuit board comprises: primary controller, and the temperature signal regulation be connected with primary controller respectively and Acquisition Circuit, oxygen signal are nursed one's health and Acquisition Circuit, control circuit for light source, pipeline control circuit, recognition by pressing keys circuit, communication interface circuit, display screen display control circuit, spectroscopic acquisition control circuit, described temperature sensor, oxygen sensor, light source driving circuit plate, spectrometer are nursed one's health with Acquisition Circuit, oxygen signal with described temperature signal regulation respectively and are connected with Acquisition Circuit, control circuit for light source, spectroscopic acquisition control circuit.
Preferably, described draft tube is provided with solenoid valve, described solenoid valve is connected with sample gas draft tube with air intake duct, and described air intake duct is provided with sampling pump, and described solenoid valve and sampling pump are all connected with described pipeline control circuit.
Described system also comprises HMI human-computer interaction interface, and described HMI human-computer interaction interface is provided with display screen and button, and described display screen is connected with display screen display control circuit, and described button is connected with recognition by pressing keys circuit.
Described control circuit board also comprises current output circuit and switching signal output circuit, described control circuit board also comprises power-switching circuit, described power-switching circuit is connected with described primary controller, the model of described primary controller is the microcontroller of STM32F103ZET6, and described communication interface circuit comprises: RS232 interface circuit and RS485 interface circuit.
The present invention compared with prior art has following beneficial effect:
1, in the present invention, by temperature sensor, oxygen sensor can the environmental data of Real-time Collection sealed gas chamber, the spectral signal of tested gas in sealed gas chamber can be gathered by spectrometer, described temperature sensor, oxygen sensor are all connected with control circuit board with spectrometer, the described spectral signal of control circuit board process spectrometer collection, the environmental data of sealed gas chamber, and convert the spectral signal received to gas concentration signal; The present invention can eliminate the impact of environmental factor on measuring system, and measuring accuracy is high, system stability good.
2, the present invention, by the communication unit of control circuit board, can be connected with HMI human-computer interaction interface, facilitate staff to the observation of measurement data and operation, practical.
Accompanying drawing explanation
Below in conjunction with accompanying drawing, the present invention will be further described in detail.
Fig. 1 is structural representation of the present invention;
Fig. 2 is electrical block diagram of the present invention;
Fig. 3 is the circuit theory diagrams of oxygen signal conditioning and Acquisition Circuit in the present embodiment;
Fig. 4 is the circuit theory diagrams of temperature signal regulation and Acquisition Circuit in the present embodiment;
In figure: 1 is sealed gas chamber, 2 is light source, 3 is Fibre Optical Sensor, 4 is spectrometer, 5 is temperature sensor, 6 is oxygen sensor, 7 is escape pipe, 8 is draft tube, 9 is control circuit board, 10 is primary controller, 11 is temperature signal regulation and Acquisition Circuit, 12 is oxygen signal conditioning and Acquisition Circuit, 13 is control circuit for light source, 14 is pipeline control circuit, 15 is recognition by pressing keys circuit, 16 is communication interface circuit, 17 is display screen display control circuit, 18 is spectroscopic acquisition control circuit, 19 is light source driving circuit plate, 20 is solenoid valve, 21 is sampling pump, 22 is current output circuit, 23 is switching signal output circuit, 24 is power-switching circuit, 25 is HMI human-computer interaction interface, 26 is display screen, 27 is button.
Embodiment
As shown in Figures 1 to 4, gas concentration measurement system in ultraviolet gas analyzer, comprise: for deposit gas sealed gas chamber 1 and for the light source 2 to emitting parallel light in air chamber, one end of described sealed gas chamber 1 is provided with the Fibre Optical Sensor 3 for receiving directional light, described Fibre Optical Sensor 3 is connected with spectrometer 4, described sealed gas chamber 1 is provided with temperature sensor 5, oxygen sensor 6, escape pipe 7 and draft tube 8, described temperature sensor 5, oxygen sensor 6 and spectrometer 4 are all connected with described control circuit board 9, described control circuit board 9 is also connected with light source 2 by light source driving circuit plate 19, described control circuit board 9 comprises: primary controller 10, and the temperature signal regulation be connected with primary controller 10 respectively and Acquisition Circuit 11, oxygen signal are nursed one's health and Acquisition Circuit 12, control circuit for light source 13, pipeline control circuit 14, recognition by pressing keys circuit 15, communication interface circuit 16, display screen display control circuit 17, spectroscopic acquisition control circuit 18, described temperature sensor 5, oxygen sensor 6, light source driving circuit plate 19 are nursed one's health with Acquisition Circuit 11, oxygen signal with described temperature signal regulation respectively and are connected with Acquisition Circuit 12, control circuit for light source 13.
In the present invention, described draft tube 8 is provided with solenoid valve 20, described solenoid valve 20 is connected with sample gas draft tube with air intake duct, described air intake duct is provided with sampling pump 21, and described solenoid valve 20 and sampling pump 21 are all connected with described pipeline control circuit 14; Described system also comprises HMI human-computer interaction interface 25, and described HMI human-computer interaction interface 25 is provided with display screen 26 and button 27, and described display screen 26 is connected with display screen display control circuit 17, and described button 27 is connected with recognition by pressing keys circuit 15; Described control circuit board 9 also comprises current output circuit 22 and switching signal output circuit 23; The model of described primary controller 10 is the microcontroller of STM32F103ZET6.
Particularly, described light source 2, light source driving circuit plate 19, spectrometer 4 and Fibre Optical Sensor 3 constitute spectral measurement part, described escape pipe 7, draft tube 8, air intake duct, sample gas draft tube, solenoid valve 20 and sampling pump 21 constitute air sampling part, described air sampling part is responsible for sample gas and air input gas sealed gas chamber 1, for spectral measurement part Measurement and analysis; Further, when solenoid valve 20 controls into air, sampling pump 21 is by air suction air chamber, absorption spectrum at zero point is obtained by spectrometer 4 analysis under the irradiation of light source 2, then solenoid valve 20 controls to enter sample gas, now, spectrometer 4 will obtain the absorption spectrum of sample gas, by communication interface circuit 16, data is passed to the computing that main control unit carries out gas concentration; Simultaneously, the environmental data of the sealed gas chamber 1 of collection is sent to main control unit and carries out data processing by temperature sensor 5 and oxygen sensor 6, and environmental data and gas concentration data are transferred to HMI human-computer interaction interface 25 by communication interface circuit 16 and carry out data display by main control unit.
In the present embodiment, the resistance value that temperature sensor 5 exports by described temperature signal regulation and Acquisition Circuit 11, be converted to voltage signal through R/V conversion, signal amplifies through conditioning, then transmits the signal to primary controller 10 by the ADC interface of primary controller 10 and processes; The weak voltage signals that oxygen sensor 6 exports by described oxygen signal conditioning and Acquisition Circuit 12 amplifies through nursing one's health, and then transmits the signal to primary controller 10 by the ADC interface of primary controller 10 and processes; Described control circuit for light source 13 passes through closedown and the unlatching of the I/O Interface Controller light source of primary controller 10; Described pipeline control circuit 14 is by the control realization sampling pump 21 of primary controller 10 switch amount and the open and close of solenoid valve 20; Described recognition by pressing keys circuit 15 is for the identification to key-press status; Described communication interface circuit 16 comprises RS232 interface and RS485 interface, realizes the digital communication with external unit; Described display screen display control circuit 17 is communicated with primary controller 10 by RS232 interface for realizing display screen 26, and primary controller 10 controls the renewal of display screen displaying contents by this control circuit; Described spectroscopic acquisition control circuit 18 is by the exchanges data between RS232 Interface realization spectrometer and primary controller 10, and the data of exchange comprise the control information of spectrometer, the spectral information etc. of spectrometer; Sample information exports with the form of analog quantity by the inside DA that described current output circuit 22 realizes primary controller 10, specific works process: the information such as gas concentration, temperature primary controller 10 sampling processing crossed is exported by voltage form, the current signal these voltages being converted into 4 ~ 20mA exports; Described switching signal output circuit 23 controls to export 24V switching value for realizing primary controller 10, allows it possess external controlling functions; In the present invention, described control circuit board 9 comprises and also comprising: power-switching circuit 24, and the 24V voltage signal that Switching Power Supply exports is converted to the various power supply signals that control circuit board 9 inside uses by described power-switching circuit 24, comprises 12V, 5V, 3.3V etc.
Particularly, the process that the spectroscopic data that described primary controller 10 pairs of spectrometers 4 transmit carries out gas concentration computing is:
(1) information is inputted: spectrometer 4 output spectrum digital quantity signal is to primary controller 10;
(2) selection of wavelength ranges and filtering;
(3) absorption cross section of corresponding wave band is calculated;
(4) slow change part in absorption cross section is calculated by least square method;
(5) removal becomes part slowly, and remaining fast change partially absorbs cross section;
(6) residual absorption cross section utilizes the concentration of the tested gas of area-method inverting;
(7) the mutual interference between gas with various is removed;
(8) concentration calibration;
(9) concentration measurement obtained by inverse exports and shows on screen;
(10) gas concentration value information is exported.
In the present embodiment, described oxygen signal conditioning with the circuit structure of Acquisition Circuit 12 is: comprise current amplifier U11, signal negative terminal-the IN of described current amplifier U11 is also connected with one end of resistance R13 behind one end of connecting resistance R11, the other end ground connection of described resistance R11, the other end of described resistance R13 is also connected with one end of resistance R14 after meeting the signal output part OUT of current amplifier U11, the other end of described resistance R14 and after connecing the negative pole of diode D11 with the negative pole of diode D12, oxygen signal conditioning is connected with the output terminals A DC_OXY of Acquisition Circuit 12, the positive pole of described diode D11 is connected with the 3.3V power output end of power-switching circuit 24, the plus earth of described diode D12, signal anode+the IN of described current amplifier U11 exports single V_OXY by resistance R12 with the signal of oxygen sensor 6 and is connected, the power supply negative terminal V-ground connection of described current amplifier U11, be connected with the 12V power output end of power-switching circuit 24 behind one end of the power positive end shunt-wound capacitance C11 of described current amplifier U11, the other end ground connection of described electric capacity C11.
The circuit structure of described temperature signal regulation and Acquisition Circuit 11 is: comprise current amplifier U22, signal negative terminal-the IN of described current amplifier U22 is also connected with one end of resistance R26 behind one end of connecting resistance R28, the other end of described resistance R26 is also connected with the signal output part PT of temperature sensor 5 behind one end of connecting resistance R24, the other end of described resistance R24 and behind one end of connecting resistance R25 with the negative pole of controlled source of stable pressure U21, one end of resistance R22, one end of resistance R21 is connected, the other end of described resistance R21 is connected with the 12V power output end of described power-switching circuit 24, the other end of described resistance R22 is also connected with the reference edge of controlled source of stable pressure U21 behind one end of connecting resistance R23, the other end of described resistance R23 ground connection after connecing the positive pole of controlled source of stable pressure U21, the other end of described resistance R25 is also connected with one end of resistance R210 behind one end of connecting resistance R27, the other end of described resistance R27 is also connected with the signal anode+IN of current amplifier U22 behind one end of connecting resistance R29, the other end of described resistance R210, the other end of resistance R29, the equal ground connection of power supply negative terminal of current amplifier U22, the other end of described resistance R28 is also connected with the signal output part OUT of described current amplifier U22 behind one end of connecting resistance R211, the other end of described resistance R211 and after connecing the negative pole of diode D21 with the negative pole of diode D22, temperature signal regulation is connected with the output terminal V_TEMP of Acquisition Circuit 11, the positive pole of described diode D22 is connected with the 3.3V power output end of power-switching circuit 24, the plus earth of described diode D21, be connected with the 12V power output end of power-switching circuit 24 behind one end of the power positive end V+ shunt-wound capacitance C21 of described current amplifier U22, the other end ground connection of described electric capacity C21.
In the present embodiment, sampling pump 21 can choose the gas samping pump of small size, ultra-low noise, wide temperature range, life-span length, good stability, ensure the error that sampling pump 21 pairs of gas concentration invertings bring to have dropped to ultimate attainment, same solenoid valve 20 also adopts quality product, effectively reduces electromagnetic interference (EMI); Simultaneously, light source 2 part by emitting ultraviolet light to sealed gas chamber 1, for the absorption spectra measurement of gas provides condition precedent, the performance of light source 2 directly determines analysis precision, stability and life-span, the present invention has selected a high stability, long-life deuterium lamp light source, its operation wavelength can cover multiple gases absorption spectra, spectrum is mild, optical noise is little, the energy of ultraviolet portion is higher, meet very much the absorption characteristic at ultraviolet band analyzing multiple gases, substantially increase measuring accuracy of the present invention and stability simultaneously.
To sum up, the present invention has outstanding substantive distinguishing features and significant progress, by reference to the accompanying drawings embodiments of the invention are explained in detail above, but the present invention is not limited to above-described embodiment, in the ken that those of ordinary skill in the art possess, various change can also be made under the prerequisite not departing from present inventive concept.
Claims (7)
1. gas concentration measurement system in ultraviolet gas analyzer, comprise: for deposit gas sealed gas chamber (1) and for the light source (2) to emitting parallel light in air chamber, it is characterized in that: one end of described sealed gas chamber (1) is provided with the Fibre Optical Sensor (3) for receiving directional light, described Fibre Optical Sensor (3) is connected with spectrometer (4), described sealed gas chamber (1) is provided with temperature sensor (5), oxygen sensor (6), escape pipe (7) and draft tube (8), described temperature sensor (5), oxygen sensor (6) is all connected with described control circuit board (9) with spectrometer (4), described control circuit board (9) is also connected with light source (2) by light source driving circuit plate (19),
Described control circuit board (9) comprising: primary controller (10), and the temperature signal regulation be connected with primary controller (10) respectively and Acquisition Circuit (11), oxygen signal are nursed one's health and Acquisition Circuit (12), control circuit for light source (13), pipeline control circuit (14), recognition by pressing keys circuit (15), communication interface circuit (16), display screen display control circuit (17), spectroscopic acquisition control circuit (18);
Described temperature sensor (5), oxygen sensor (6), light source driving circuit plate (19), spectrometer (4) are nursed one's health with described temperature signal regulation and Acquisition Circuit (11), oxygen signal respectively and are connected with Acquisition Circuit (12), control circuit for light source (13), spectroscopic acquisition control circuit (18).
2. gas concentration measurement system in ultraviolet gas analyzer according to claim 1, it is characterized in that: described draft tube (8) is provided with solenoid valve (20), described solenoid valve (20) is connected with sample gas draft tube with air intake duct, described air intake duct is provided with sampling pump (21), described solenoid valve (20) and sampling pump (21) are all connected with described pipeline control circuit (14).
3. gas concentration measurement system in ultraviolet gas analyzer according to claim 1, it is characterized in that: described system also comprises HMI human-computer interaction interface (25), described HMI human-computer interaction interface (25) is provided with display screen (26) and button (27), described display screen (26) is connected with display screen display control circuit (17), and described button (27) is connected with recognition by pressing keys circuit (15).
4. gas concentration measurement system in ultraviolet gas analyzer according to claim 1, is characterized in that: described control circuit board (9) also comprises current output circuit (22) and switching signal output circuit (23).
5. gas concentration measurement system in ultraviolet gas analyzer according to claim 1, is characterized in that: described control circuit board (9) also comprises power-switching circuit (24), and described power-switching circuit (24) is connected with described primary controller (10).
6. gas concentration measurement system in ultraviolet gas analyzer according to claim 1, is characterized in that: the model of described primary controller (10) is the microcontroller of STM32F103ZET6.
7. gas concentration measurement system in ultraviolet gas analyzer according to claim 1, is characterized in that: described communication interface circuit (16) comprising: RS232 interface circuit and RS485 interface circuit.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610017479.9A CN105466877B (en) | 2016-01-12 | 2016-01-12 | Gas concentration measurement system in ultraviolet gas analyzer |
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| CN201610017479.9A CN105466877B (en) | 2016-01-12 | 2016-01-12 | Gas concentration measurement system in ultraviolet gas analyzer |
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| CN105466877B CN105466877B (en) | 2018-11-23 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106483087A (en) * | 2016-12-13 | 2017-03-08 | 云南电网有限责任公司电力科学研究院 | A kind of sulfur dioxide detection method and system |
| CN106596444A (en) * | 2016-12-08 | 2017-04-26 | 哈尔滨工业大学 | Oxygen concentration measuring system based on ultraviolet broadband absorption spectrum and measuring method |
| CN110568514A (en) * | 2019-08-21 | 2019-12-13 | 吉林大学 | sweat wiping device for doctor of surgical operation main knife |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201740731U (en) * | 2010-05-18 | 2011-02-09 | 宇星科技发展(深圳)有限公司 | Online ozone monitor |
| CN202189011U (en) * | 2011-07-20 | 2012-04-11 | 郭振铎 | Novel gas absorbing device |
| CN202330277U (en) * | 2011-12-04 | 2012-07-11 | 北方光电集团有限公司 | Portable ultraviolet spectrum flue gas analyzer |
| CN202502046U (en) * | 2012-03-06 | 2012-10-24 | 昆明斯派特光谱科技有限责任公司 | Light spectrum transmitting terminal for spectroscopy gas analyzer |
| KR101326237B1 (en) * | 2012-01-10 | 2013-11-11 | 주식회사 스펙트로 | Remote sensing apparatus and method for tropospheric aerosol using UV MAX-DOAS during hazy conditions |
| CN104568836A (en) * | 2015-01-26 | 2015-04-29 | 南京国电环保科技有限公司 | Low-concentration and multi-component gas detection method based on integration of multiple spectrum technologies |
| CN205538658U (en) * | 2016-01-12 | 2016-08-31 | 中绿环保科技股份有限公司 | Gaseous concentration measurement system in ultraviolet gas analysis appearance |
-
2016
- 2016-01-12 CN CN201610017479.9A patent/CN105466877B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201740731U (en) * | 2010-05-18 | 2011-02-09 | 宇星科技发展(深圳)有限公司 | Online ozone monitor |
| CN202189011U (en) * | 2011-07-20 | 2012-04-11 | 郭振铎 | Novel gas absorbing device |
| CN202330277U (en) * | 2011-12-04 | 2012-07-11 | 北方光电集团有限公司 | Portable ultraviolet spectrum flue gas analyzer |
| KR101326237B1 (en) * | 2012-01-10 | 2013-11-11 | 주식회사 스펙트로 | Remote sensing apparatus and method for tropospheric aerosol using UV MAX-DOAS during hazy conditions |
| CN202502046U (en) * | 2012-03-06 | 2012-10-24 | 昆明斯派特光谱科技有限责任公司 | Light spectrum transmitting terminal for spectroscopy gas analyzer |
| CN104568836A (en) * | 2015-01-26 | 2015-04-29 | 南京国电环保科技有限公司 | Low-concentration and multi-component gas detection method based on integration of multiple spectrum technologies |
| CN205538658U (en) * | 2016-01-12 | 2016-08-31 | 中绿环保科技股份有限公司 | Gaseous concentration measurement system in ultraviolet gas analysis appearance |
Non-Patent Citations (1)
| Title |
|---|
| 孟国鑫 等: "DOAS监测排放烟气浓度时谱线漂移处理方法研究", 《环境工程》 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106596444A (en) * | 2016-12-08 | 2017-04-26 | 哈尔滨工业大学 | Oxygen concentration measuring system based on ultraviolet broadband absorption spectrum and measuring method |
| CN106483087A (en) * | 2016-12-13 | 2017-03-08 | 云南电网有限责任公司电力科学研究院 | A kind of sulfur dioxide detection method and system |
| CN110568514A (en) * | 2019-08-21 | 2019-12-13 | 吉林大学 | sweat wiping device for doctor of surgical operation main knife |
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| CN105466877B (en) | 2018-11-23 |
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