CN103674846A - Related infrared filter device - Google Patents
Related infrared filter device Download PDFInfo
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- CN103674846A CN103674846A CN201310670230.4A CN201310670230A CN103674846A CN 103674846 A CN103674846 A CN 103674846A CN 201310670230 A CN201310670230 A CN 201310670230A CN 103674846 A CN103674846 A CN 103674846A
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- associated wheel
- filter device
- motor
- infrared filter
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Abstract
The invention discloses a related infrared filter device. The related infrared filter device comprises a direct-current motor and a stepping motor arranged on a machine frame, wherein a related wheel chopper piece and a related wheel are respectively arranged at the shaft ends of the direct-current motor and the stepping motor; a direct-current motor detection optical coupling plate is arranged on the machine frame opposite to one side of the related wheel chopper piece; a stepping motor detection optical coupling plate is arranged on the machine frame opposite to the other side of the related wheel; an infrared light source is arranged on the top, opposite to the related wheel chopper piece, of the machine frame. According to the related infrared filter device, by the adoption of a split combination movement mode, the overall high-speed rotating mode of the related wheel and a light cutting piece is changed into the combination mode of the related wheel which is rotated and positioned in a stepping way at a low speed and a chopper piece which is rotated at a high speed; after the improvement, the load of a motor is reduced, and the chopping frequency of the chopper piece is improved; the related wheel is rotated stably, and the service life is prolonged; the wheel body of the related wheel is made of a hard aluminum material, the weight is light, the load of the motor is reduced, and the cost performance is high. The related infrared filter device is arranged on an automatic CO monitoring instrument, the maintenance workload of the instrument can be reduced, the maintenance cost can be saved, and the measurement accuracy can be improved by 30 percent.
Description
Technical field
The present invention relates to relevant infrared absorption filter wave apparatus, relate in particular to the infrared absorption filter wave apparatus for modulated infrared light source continuous radiation of carbon monoxide automonitor, belong to physical technique field.
Background technology
Along with socioeconomic rapid growth, the level of urbanization improves constantly, environmental air pollution also becomes increasingly conspicuous, become the focal issue of social concerns, and causing serious concerns widely, various monitorings, monitoring and management continue to increase, wherein, in the important monitoring project that environmental monitoring stations at different levels evaluate quality of air environment, what CO became < < ambient air quality > > must survey parameter.
The monitoring method that CO is conventional is the relevant photometry of non-dispersion infrared gas filtration, and the basis of coherent detection is that measured signal has the relevant characteristic in front and back on time shaft.The infrared radiation being sent by infrared light supply enters measuring chamber by infrared entrance after gas filter correlation wheel, at measuring chamber, after multiple reflections (light path 12.8m), from infrared outlet, penetrates, and by being detected device after narrow band pass filter, receives.
Gas filter correlation wheel is comprised of two plenum chambers and runner.What component air chamber to be measured filled is the CO gas of high concentration, and this is reference gas chamber, by its signal as with reference to signal; What inert gas air chamber was filled with is the nitrogen without absorption at 4.65 mu m wavebands, and this air chamber, as measuring air chamber, is measuring-signal by measuring the signal of air chamber.When brshless DC motor drives gas filter correlation wheel to rotate, infrared radiation is successively through reference cell and measuring chamber, during through reference cell, infrared radiation arrives detector after the CO double-absorption in CO air chamber and White pond, and now explorer response is reference signal; During through measuring chamber, infrared radiation does not absorb in nitrogen chamber, only after the CO in White pond absorbs, arrives detector, and now explorer response is measuring-signal; When the next door between reference cell and measuring chamber shuts out the light, the response signal at this moment causing on detector as on electronics zero point of two paths of signals.The difference of measuring-signal and reference signal be exactly system required with air in the concentration dependent signal of CO.In order to obtain this useful signal, system adopts correlation detection technology, with two-way correlation detecting circuit, respectively measuring-signal and reference signal is extracted, and then carries out the concentration that subtraction obtains CO gas in light chamber.
What in prior art CN2722240Y, associated wheel wheel body adopted is pure titanium material, whole associated wheel assembly is heavier, and in practice, in order to improve survey frequency and the reference frequency of light signal, associated wheel assembly must be at high speed rotary motion under driven by motor, at this moment motor operation thermal value is larger, and the temperature rise of whole parts even has influence on the temperature of air chamber, makes high-purity gas unstable state.And high temperature easily affects the sealing of viscose glue, can cause the tiny leakage of air chamber gas, cause associated wheel measuring condition to change, affect signal and the measuring accuracy of instrument.
Summary of the invention
Technical matters to be solved by this invention is to overcome prior art deficiency, and the relevant infrared absorption filter wave apparatus that a kind of Split assembled mode of motion, life-span are relatively long, cost performance is high is provided.
For realizing the object of the invention, this relevant infrared absorption filter wave apparatus is characterized in that it comprises direct current generator and the stepper motor being installed in frame, direct current generator and stepper motor axle head are installed respectively associated wheel copped wave sheet and associated wheel, in the frame of corresponding associated wheel copped wave sheet one side, install direct current generator and detect optocoupler plate, in the frame of corresponding associated wheel opposite side, install stepper motor and detect optocoupler plate, the frame top of corresponding associated wheel copped wave sheet is provided with infrared light supply.
Described associated wheel wheel body is by duralumin material, and associated wheel is axially embedded with two air chambers, is filled with respectively N in described 2 air chambers
2gas and CO gas, the light inlet window of each air chamber adopts calcium fluoride or magnesium fluoride material.
On described associated wheel copped wave sheet, be radially evenly distributed with trapezoidal copped wave hole.
Described DC motor speed is 3500～5000 turn/min, and high-revolving direct current generator can drive the copped wave sheet High Rotation Speed that is installed in its axle head.
Described stepper motor rotating speed is 0.5～2 turn/min, and slow-revving stepper motor can drive the associated wheel slow circumvolve that is installed in its axle head.
The invention has the beneficial effects as follows:
Relevant infrared filter module in the present invention adopts Split assembled mode of motion, associated wheel of the prior art is added and cuts the whole High Rotation Speed Model improvement of mating plate for the associated wheel of stepping rotation location and the copped wave sheet integrated mode of High Rotation Speed at a slow speed, after improvement, motor load reduces, the chopping frequency of copped wave sheet improves, associated wheel running is more steady, and extend serviceable life; And whole associated wheel parts adopt the processing of 2A12 duralumin material, and quality is lighter, reduces motor load, and cost performance is higher compared to prior art.The present invention is installed on CO automonitor, can improve stability and the measuring accuracy of instrument, and than existing equipment, precision can improve 30% left and right, and can reduce the maintenance workload of instrument, maintenance cost saving.
Accompanying drawing explanation
Fig. 1 is one-piece construction schematic diagram of the present invention.
Fig. 2 is the assembly structure schematic diagram of Fig. 1.
Fig. 3 is the associated wheel structural representation of Fig. 1.
Fig. 4 is the vertical view of Fig. 3.
In Fig. 1～Fig. 4, label is as follows: 1. direct current generator; 2. stepper motor; 3. stepper motor detects optocoupler plate; 4. associated wheel; 5. associated wheel copped wave sheet; 6. direct current generator detects optocoupler plate; 7. frame; 8. infrared light supply; 9. CO plenum chamber; 10. N
2plenum chamber, 11. windows.
Embodiment
As shown in Figure 1 to 4, the relevant infrared absorption filter wave apparatus of the present invention comprises direct current generator 1 and the stepper motor 2 being installed in frame 7, the axle head of direct current generator 1 and stepper motor 2 is installed respectively associated wheel copped wave sheet 5 and associated wheel 4, is radially evenly distributed with trapezoidal copped wave hole on associated wheel copped wave sheet 5.In the frame 7 of corresponding associated wheel copped wave sheet 5 one sides, install direct current generator and detect optocoupler plate 6, this optocoupler plate 6 is for detection of the rotating speed of direct current generator 1, the rotating speed of direct current generator 1 is 3500～5000 turn/min, and high-revolving direct current generator 1 can drive associated wheel copped wave sheet 5 High Rotation Speeds that are installed in its axle head; In the frame 7 of corresponding associated wheel 4 opposite sides, install stepper motor and detect optocoupler plate 3, this optocoupler plate 3 is for detection of stepper motor 2 signals, the rotating speed of stepper motor 2 is 0.5～2 turn/min, slow-revving stepper motor 2 can drive associated wheel 4 slow circumvolves that are installed in its axle head, and frame 7 tops of corresponding associated wheel copped wave sheet 5 are provided with infrared light supply 8.
When the present invention is installed in carbon monoxide automonitor, infrared light supply 8 continuous radiation infrared lights in frame 7, direct current high-speed electric expreess locomotive 1 reaches the rotating speed of 4000 turn/min, and drive associated wheel copped wave sheet 5 High Rotation Speeds of its axle head, copped wave hole on the associated wheel copped wave sheet 5 of High Rotation Speed is constantly by the infrared signal cutting of infrared light supply transmitting, the rotating speed of stepper motor 2 is about 1 turn/min, and drive the slowly at the uniform velocity rotation of associated wheel 4 that is installed in its axle head, as the N of infrared signal through setting-in in associated wheel 4
2when the calcium fluoride of air chamber 10 or magnesium fluoride window 11, N
2do not absorb infrared light radiation, infrared light directly enters light chamber and measures, and draws a measuring-signal; When infrared signal is during through the calcium fluoride of CO air chamber 9 or magnesium fluoride window 11, the CO of high concentration almost absorbs the radiation of infrared light completely, measures tested gas CO in light chamber and just no longer causes the further decay of energy, and the signal now drawing is reference signal.By measuring reference signal, by langbobier law, just can obtain the concentration of CO gas in light chamber.
Above-described embodiment is only preferred embodiment of the present invention, not in order to limit the present invention, those skilled in the art or those skilled in the art are except also taking other various implementations according to embodiment disclosed in this invention, all simple, equivalences of doing according to content of the present invention change or modify, all should understand within the scope of the invention, be subject to the restriction of the claims in the present invention.
Claims (4)
1. a relevant infrared absorption filter wave apparatus, it is characterized in that it comprises direct current generator and the stepper motor being installed in frame, direct current generator and stepper motor axle head are installed respectively associated wheel copped wave sheet and associated wheel, in the frame of corresponding associated wheel copped wave sheet one side, install direct current generator and detect optocoupler plate, in the frame of corresponding associated wheel opposite side, install stepper motor and detect optocoupler plate, the frame top of corresponding associated wheel copped wave sheet is provided with infrared light supply.
2. according to power, require the relevant infrared absorption filter wave apparatus described in 1, it is characterized in that described associated wheel is axially embedded with two air chambers, is filled with respectively N in described 2 air chambers
2gas and CO gas, the light inlet window of each air chamber adopts calcium fluoride or magnesium fluoride material.
3. according to power, require the relevant infrared absorption filter wave apparatus described in 1, it is characterized in that described DC motor speed is 3500～5000 turn/min.
4. according to power, require the relevant infrared absorption filter wave apparatus described in 1, it is characterized in that described stepper motor rotating speed is 0.5～2 turn/min.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310670230.4A CN103674846A (en) | 2013-12-10 | 2013-12-10 | Related infrared filter device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310670230.4A CN103674846A (en) | 2013-12-10 | 2013-12-10 | Related infrared filter device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103674846A true CN103674846A (en) | 2014-03-26 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310670230.4A Pending CN103674846A (en) | 2013-12-10 | 2013-12-10 | Related infrared filter device |
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| CN (1) | CN103674846A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105048719A (en) * | 2015-08-25 | 2015-11-11 | 石忠 | Opening and closing curtain motor |
| US20210310939A1 (en) * | 2020-04-06 | 2021-10-07 | Joyson Safety Systems Acquisition Llc | Systems and methods of ambient gas sensing in a vehicle |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2722240Y (en) * | 2004-06-29 | 2005-08-31 | 河北先河科技发展有限公司 | Related wheel of automatic carbon monoxide monitor |
| US20090213380A1 (en) * | 2008-02-21 | 2009-08-27 | Dirk Appel | Gas analyzer system |
| CN102323667A (en) * | 2011-07-29 | 2012-01-18 | 浙江科技学院 | Miniaturized mechanical chopper |
| CN103115890A (en) * | 2012-12-29 | 2013-05-22 | 聚光科技(杭州)股份有限公司 | Synchronous sampling method for GFC (gas filter correlation) wheels |
| CN203606270U (en) * | 2013-12-10 | 2014-05-21 | 河北先河环保科技股份有限公司 | Relevant infrared filter device |
-
2013
- 2013-12-10 CN CN201310670230.4A patent/CN103674846A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2722240Y (en) * | 2004-06-29 | 2005-08-31 | 河北先河科技发展有限公司 | Related wheel of automatic carbon monoxide monitor |
| US20090213380A1 (en) * | 2008-02-21 | 2009-08-27 | Dirk Appel | Gas analyzer system |
| CN102323667A (en) * | 2011-07-29 | 2012-01-18 | 浙江科技学院 | Miniaturized mechanical chopper |
| CN103115890A (en) * | 2012-12-29 | 2013-05-22 | 聚光科技(杭州)股份有限公司 | Synchronous sampling method for GFC (gas filter correlation) wheels |
| CN203606270U (en) * | 2013-12-10 | 2014-05-21 | 河北先河环保科技股份有限公司 | Relevant infrared filter device |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105048719A (en) * | 2015-08-25 | 2015-11-11 | 石忠 | Opening and closing curtain motor |
| US20210310939A1 (en) * | 2020-04-06 | 2021-10-07 | Joyson Safety Systems Acquisition Llc | Systems and methods of ambient gas sensing in a vehicle |
| US11692933B2 (en) * | 2020-04-06 | 2023-07-04 | Joyson Safety Systems Acquisition Llc | Systems and methods of ambient gas sensing in a vehicle |
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Application publication date: 20140326 |