CN101929953B - Online air quality monitor capable of calibrating automatically - Google Patents
Online air quality monitor capable of calibrating automatically Download PDFInfo
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- CN101929953B CN101929953B CN 200910117000 CN200910117000A CN101929953B CN 101929953 B CN101929953 B CN 101929953B CN 200910117000 CN200910117000 CN 200910117000 CN 200910117000 A CN200910117000 A CN 200910117000A CN 101929953 B CN101929953 B CN 101929953B
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- mercury lamp
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Abstract
The invention discloses an online air quality monitor capable of calibrating automatically. The monitor comprises an optical fiber fixing seat (11), an optical fiber fixing sleeve (12), a pen-shaped mercury lamp (1) and an elevating device, wherein the pen-shaped mercury lamp is fixed at the bottom of the optical fiber fixing seat (11) through the elevating device. The pen-shaped mercury lamp is only needed to be elevated into the optical fiber fixing seat during calibration and is descended through the elevating device after calibration is finished. The monitor has the advantages of realizing automatic calibration of the mercury lamp and improving the measuring accuracy of a system.
Description
Technical field
The present invention relates to a kind of air quality on-line monitoring appearance with DOAS monitoring air quality.
Background technology
The DOAS ultimate principle is to confirm the content of some component substances quantitatively through analyzing absorption spectrum, and the concentration that wants to measure gas to be measured must at first be known the absorption cross section of its molecule.The absorption cross section of molecule generally all records in the laboratory having under certain experiment condition; In practical application; Because the non-ideal characteristic of optical system itself; Spectrometer also can be introduced some and cause measured factors such as position of spectral line skew, profile broadening and distortion, in order to improve measuring accuracy, need demarcate with mercury lamp during actual measurement.
At present, the method for DOAS air quality on-line monitoring system (being called for short AQMS) sampling mercury lamp demarcation is to realize through manual method.Promptly earlier optical fiber is taken off, then mercury lamp is aimed at optical fiber and enter the mouth and realize that mercury lamp demarcates, demarcation finishes, and mercury lamp is removed, and optical fiber is fixed again.Though this method can realize calibrating function, existing problems: 1: can not realize that on-line automatic mercury lamp demarcates tracking illumination spectrometer position of spectral line skew.2: fixed fiber again after timing signal must take off optical fiber, demarcate, the light path condition changes before and after demarcating.3: troublesome poeration, can not realize the remote online demarcation.
Summary of the invention
In order to overcome above deficiency, the invention provides a kind of automatically-calibrated air quality on-line monitoring appearance, not only can solve the mercury lamp online in real time and demarcate automatically, and need not remove optical fiber at timing signal, bring convenience to operation.
The present invention is achieved in that and comprises fiber fixed seat, optical fiber fixed cover, and it also comprises form of a stroke or a combination of strokes mercury lamp and jacking gear thereof, and the fiber fixed seat bottom has the enterable calibrated holes of form of a stroke or a combination of strokes mercury lamp, and form of a stroke or a combination of strokes mercury lamp is fixed on the calibrated holes below by jacking gear.Only need form of a stroke or a combination of strokes mercury lamp is risen up in the fiber fixed seat at timing signal, demarcate again form of a stroke or a combination of strokes mercury lamp to be fallen through jacking gear after finishing and get final product.
Jacking gear is made up of stepper motor, gear, tooth bar, guide rail and geometrical clamp, goes on foot dynamo-electric machine and guide rail and is fixed on the monitor, and the chute that cooperates with tooth bar is arranged on the guide rail, and gear is fixed on the step motor shaft, and form of a stroke or a combination of strokes mercury lamp is fixed on the tooth bar by geometrical clamp.
Install for ease, stepper motor and guide rail are fixed on the holder, and holder is fixed on the monitor.
Beneficial effect of the present invention is embodied in: 1, can realize the offset of automatic mercury lamp demarcation tracking illumination spectrometer, improve the precision of systematic survey.2, easy to use, as long as it is installed in the porch of optical fiber, be that the may command mercury lamp moves and realizes calibration through sending simple control command, overcome the problem that the light path condition changes before and after demarcating.3, can realize regularly or far distance controlled is carried out real-time calibration.
Description of drawings
Fig. 1 is a structural representation of the present invention.
Fig. 2 is the left view of Fig. 1.
Fig. 3 is the vertical view of Fig. 1.
Fig. 4 is a stereoscopic-state reference diagram of the present invention.
Embodiment
Extremely shown in Figure 3 like Fig. 1; Guide rail 7 is fixed on the track base 6, and the chute that cooperates with guide rail 7 is arranged on the tooth bar 5, and stepper motor 3 is fixed on the holder 2 with track base 6; Gear 4 is fixed on 3 of the stepper motors; Gear 4 and tooth bar 5 engagements, form of a stroke or a combination of strokes mercury lamp 1 is fixed on the mercury lamp geometrical clamp 10, is fixed on the tooth bar 5 through web member 9.The upper and lower limit position of tooth bar 5 motions is respectively equipped with touch switch 8, and touch switch 8 is installed on the holder 2, and tooth bar 5 motion positions are accomplished by touch switch 8.
As shown in Figure 4; Optical fiber 13 is fixed on fiber fixed seat 11 sides by optical fiber fixed cover 12; The mercury lamp jacking gear is installed in fiber fixed seat 11 belows; Have the calibrated holes that the mercury lamp cover can stretch in fiber fixed seat 11 bottoms, monitor is when normal the measurement, and measure spectrum is by getting into optical fiber 13 inlets in the fiber fixed seat 11; At the needs timing signal; Controller sends various form of a stroke or a combination of strokes mercury lamps 1 rising orders; Stepper motor 3 driven wheels 4 of this jacking gear rotate; Drive tooth bar 5 and be fixed on form of a stroke or a combination of strokes mercury lamp 1 that tooth bar 5 is and rise and get in the fiber fixed seat 11, measure spectrum is blocked by the back of form of a stroke or a combination of strokes mercury lamp 1, and mercury lamp spectrum is beaten at optical fiber 13 inlet completion system mercury lamp calibrating functions.Demarcate and finish, controller sends mercury lamp decline order, and this device drives mercury lamp and descends.The automatic remote controlled mercury lamp calibrating function of the system that realized has improved the automaticity and the operability of system greatly.
Claims (2)
1. automatically-calibrated air quality on-line monitoring appearance; Comprise fiber fixed seat [11], optical fiber fixed cover [12]; It is characterized in that it also comprises form of a stroke or a combination of strokes mercury lamp [1] and jacking gear thereof; Fiber fixed seat [11] bottom has the enterable calibrated holes of form of a stroke or a combination of strokes mercury lamp [1], and form of a stroke or a combination of strokes mercury lamp is fixed on the calibrated holes below by jacking gear; Jacking gear is made up of stepper motor [3], gear [4], tooth bar [5], guide rail [7] and geometrical clamp [10]; Go on foot dynamo-electric machine [3] and guide rail [7] is fixed on the monitor; The chute that cooperates with tooth bar [5] is arranged on the guide rail [7]; Gear [4] is fixed on stepper motor [3] axle, and form of a stroke or a combination of strokes mercury lamp [1] is fixed on the tooth bar [5] by geometrical clamp [10].
2. automatically-calibrated air quality on-line monitoring appearance according to claim 1 is characterized in that stepper motor [3] and guide rail [7] are fixed on another holder [2], and this holder [2] is fixed on the monitor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200910117000 CN101929953B (en) | 2009-06-25 | 2009-06-25 | Online air quality monitor capable of calibrating automatically |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200910117000 CN101929953B (en) | 2009-06-25 | 2009-06-25 | Online air quality monitor capable of calibrating automatically |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101929953A CN101929953A (en) | 2010-12-29 |
| CN101929953B true CN101929953B (en) | 2012-04-25 |
Family
ID=43369250
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200910117000 Active CN101929953B (en) | 2009-06-25 | 2009-06-25 | Online air quality monitor capable of calibrating automatically |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101929953B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103900980B (en) * | 2014-04-15 | 2016-10-05 | 安徽蓝盾光电子股份有限公司 | Full automatic calibration control system and scaling method thereof for long light path DOAS gas analyser |
| CN105841812A (en) * | 2016-03-30 | 2016-08-10 | 广西科技大学 | Method for correcting wavelength drift of array type spectrometer based on combination of optical switch and mercury lamp |
| CN107014778A (en) * | 2017-05-08 | 2017-08-04 | 浙江理工大学 | A kind of desk-top near-infrared probe device |
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2009
- 2009-06-25 CN CN 200910117000 patent/CN101929953B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN101929953A (en) | 2010-12-29 |
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