CN104101426B - Reflective panorama visual angle flame detector - Google Patents
Reflective panorama visual angle flame detector Download PDFInfo
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- CN104101426B CN104101426B CN201410361521.XA CN201410361521A CN104101426B CN 104101426 B CN104101426 B CN 104101426B CN 201410361521 A CN201410361521 A CN 201410361521A CN 104101426 B CN104101426 B CN 104101426B
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- visual angle
- pyroelectric sensor
- flame detector
- concave mirror
- printing opacity
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- 230000000007 visual effect Effects 0.000 title claims abstract description 32
- 238000007639 printing Methods 0.000 claims abstract description 22
- 238000002485 combustion reaction Methods 0.000 claims abstract description 7
- 238000001228 spectrum Methods 0.000 claims abstract description 6
- 239000011521 glass Substances 0.000 claims description 3
- 230000005616 pyroelectricity Effects 0.000 claims description 3
- 239000000523 sample Substances 0.000 claims description 3
- 238000007789 sealing Methods 0.000 claims description 2
- 238000001514 detection method Methods 0.000 abstract description 5
- 238000004519 manufacturing process Methods 0.000 description 5
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Abstract
The invention discloses a kind of reflective panorama visual angle flame detector, comprise support housing, be provided with concave mirror and signal processing circuit board in this support housing, this concave mirror surface is coated with one deck highly reflecting films; Place pyroelectric sensor in the remittance focal spot of concave mirror, this pyroelectric sensor is connected with signal processing circuit board by flexible PCB, and this pyroelectric sensor outside is provided with hemispheric printing opacity face shield, and this printing opacity face shield is connected with support housing.Flame detector of the present invention is when there being flame combustion, and the burning spectrum incident ray of any direction is after concave mirror reflection, and reflection ray enters to inject pyroelectric sensor, thus realizes the detection of panorama visual angle flame.
Description
Technical field
The present invention relates to flame detector, particularly relate to a kind of reflective panorama visual angle flame detector.
Background technology
Flame detector is widely used in the places such as oil gas, chemicals, ammunition depot, traffic tunnel at present.Its cardinal principle detects the spectral information of comburant.Owing to generally adopting maximum only 120 degree of the field of view angle of pyroelectric sensor in flame detector, therefore for eliminating detection blind area, flame detector for single-sensor structure generally adopts laying mode of intersecting, or adopts dual sensor structure (as patent 201220645912).For expanding flame detector detection visual angle further, patent 201120332965 proposes the structure of four pyroelectric sensor semispheres being arranged, but this simple mode increasing pyroelectric sensor quantity that relies on both had added detector cost, increased again production assembly difficulty.
Summary of the invention
Goal of the invention of the present invention is to provide a kind of reflective panorama visual angle flame detector structure, solves the technical barrier of angular field of view and cost in current flame detector technology.
The present invention realizes the technical scheme that above-mentioned purpose adopts:
There is provided a kind of reflective panorama visual angle flame detector, comprise support housing, be provided with concave mirror and signal processing circuit board in this support housing, this concave mirror surface is coated with one deck highly reflecting films; Place pyroelectric sensor in the remittance focal spot of concave mirror, this pyroelectric sensor is connected with signal processing circuit board by flexible PCB, and this pyroelectric sensor outside is provided with hemispheric printing opacity face shield, and this printing opacity face shield is connected with support housing; When flame combustion, any direction burning spectrum incident ray is after concave mirror reflection, and reflection ray enters to inject pyroelectric sensor, thus realizes the flame detecting at panorama visual angle.
In the flame detector of reflective panorama visual angle of the present invention, the reflected wavelength range of highly reflecting films is 3.6-5.2 micron.
In the flame detector of reflective panorama visual angle of the present invention, cover plate for sealing is passed through at the back of this support housing.
In the flame detector of reflective panorama visual angle of the present invention, this printing opacity face shield is glass mask.
In the flame detector of reflective panorama visual angle of the present invention, described pyroelectric sensor is three wavelength pyroelectricity probes.
In the flame detector of reflective panorama visual angle of the present invention, signal processing circuit board is positioned over the back of concave mirror.
In the flame detector of reflective panorama visual angle of the present invention, this pyroelectric sensor is placed in printing opacity face shield inside top.
In the flame detector of reflective panorama visual angle of the present invention, described printing opacity mask top is provided with a transparent circular fixture, and described pyroelectric sensor is fixed on printing opacity face shield inside top by this transparent circular fixture.
The beneficial effect that the present invention produces is: the present invention utilizes a pyroelectric sensor to coordinate reflective optical structure namely to achieve panorama visual angle flame detecting, effectively prevent simple dependence and increase the method that pyroelectric sensor quantity increases detection area, reduce production cost and production complexity, decrease the on-the-spot quantity laying pyroelectric sensor.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the invention will be further described, in accompanying drawing:
Fig. 1 is the embodiment of the present invention reflective panorama visual angle flame detector schematic diagram;
Fig. 2 is the embodiment of the present invention reflective panorama visual angle flame detector explosive view;
Fig. 3 is the embodiment of the present invention reflective panorama visual angle light path schematic diagram.
Embodiment
In order to make object of the present invention, technical scheme and advantage clearly understand, below in conjunction with drawings and Examples, the present invention is further elaborated.Should be appreciated that specific embodiment described herein only in order to explain the present invention, be not intended to limit the present invention.
As shown in Figure 1 with shown in Fig. 2, the embodiment of the present invention reflective panorama visual angle flame detector 1 comprises support housing 7, is provided with concave mirror 3 in this support housing 7, can place signal processing circuit board 6 at the back of concave mirror 3.In the embodiment of the present invention, concave mirror 3 and signal processing circuit board 6 are all placed in flame detector support housing 7, and concave mirror 3 embeds in support housing 7.
This concave mirror 3 surface is coated with one deck highly reflecting films; A pyroelectric sensor 4 is placed in the remittance focal spot of concave mirror 3, this pyroelectric sensor 4 is connected with signal processing circuit board 6 by flexible PCB 5, this pyroelectric sensor 4 outside is provided with hemispheric printing opacity face shield 2, and this printing opacity face shield 2 is connected with support housing 7.When there being flame combustion, the burning spectrum incident ray of any direction is after concave mirror reflection, and reflection ray enters to inject pyroelectric sensor, thus realizes the flame detecting of panorama.
In one embodiment of the present of invention, reflective panorama visual angle flame detector can be fixed on hemispheric printing opacity face shield 2, as printing opacity face shield inside top.As schemed specifically can be provided with a transparent circular fixture 21 at printing opacity mask top, pyroelectric sensor 4 is fixed on printing opacity face shield 2 inside top by this transparent circular fixture 21.Flexible PCB 5 provides power supply and signal transmission passage for pyroelectric sensor 4.Signal processing circuit board 6 completes the functions such as the amplification of corresponding signal, filtering, analysis, judgement.
In one embodiment of the present of invention, printing opacity face shield 2 can be glass mask.Printing opacity face shield 2 has two effects, as translucent element, the first ensures that flame combustion spectrum enters detector inside, and it two is inner as shell protection detector.
Concave mirror 3 surface is coated with highly reflecting films according to flame combustion spectral range, and the three wavelength pyroelectricity probes that in a preferred embodiment of the present invention, pyroelectric sensor 4 adopts, the reflected wavelength range of highly reflecting films should between 3.6 microns-5.2 microns.
In one embodiment of the present of invention, as shown in Figure 2, the back of support housing 7 is sealed by cover plate 8, to protect support housing 7 inner member.
During flame combustion, as shown in Figure 3, any direction burning spectrum incident ray 9 is after concave mirror 3 reflects, and reflection ray 10 enters to inject pyroelectric sensor 4, thus realizes the flame detecting at panorama visual angle.
To sum up, the present invention only utilizes a pyroelectric sensor to coordinate reflective optical structure namely to achieve panorama visual angle flame detecting.Effectively prevent simple dependence and increase the method that pyroelectric sensor quantity increases detection area, reduce production cost and production complexity, decrease the laying quantity of spot sensor.
Should be understood that, for those of ordinary skills, can be improved according to the above description or convert, and all these improve and convert the protection domain that all should belong to claims of the present invention.
Claims (8)
1. a reflective panorama visual angle flame detector, comprises support housing, is provided with signal processing circuit board, it is characterized in that in this support housing, be also provided with concave mirror in this support housing, and this concave mirror surface is coated with one deck highly reflecting films; Place pyroelectric sensor in the remittance focal spot of concave mirror, this pyroelectric sensor is connected with signal processing circuit board by flexible PCB, and this pyroelectric sensor outside is provided with hemispheric printing opacity face shield, and this printing opacity face shield is connected with support housing; When there being flame combustion, the burning spectrum incident ray of any direction is after concave mirror reflection, and reflection ray enters to inject pyroelectric sensor.
2. reflective panorama visual angle according to claim 1 flame detector, is characterized in that, the reflected wavelength range of highly reflecting films is 3.6-5.2 micron.
3. reflective panorama visual angle according to claim 1 flame detector, it is characterized in that, cover plate for sealing is passed through at the back of this support housing.
4. reflective panorama visual angle according to claim 1 flame detector, it is characterized in that, this printing opacity face shield is glass mask.
5. reflective panorama visual angle according to claim 1 flame detector, is characterized in that, described pyroelectric sensor is three wavelength pyroelectricity probes.
6. reflective panorama visual angle according to claim 1 flame detector, it is characterized in that, signal processing circuit board is positioned over the back of concave mirror.
7. reflective panorama visual angle according to claim 1 flame detector, it is characterized in that, this pyroelectric sensor is placed in printing opacity face shield inside top.
8. reflective panorama visual angle according to claim 1 flame detector, it is characterized in that, described printing opacity mask top is provided with a transparent circular fixture, and described pyroelectric sensor is fixed on printing opacity face shield inside top by this transparent circular fixture.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410361521.XA CN104101426B (en) | 2014-07-25 | 2014-07-25 | Reflective panorama visual angle flame detector |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410361521.XA CN104101426B (en) | 2014-07-25 | 2014-07-25 | Reflective panorama visual angle flame detector |
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| Publication Number | Publication Date |
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| CN104101426A CN104101426A (en) | 2014-10-15 |
| CN104101426B true CN104101426B (en) | 2016-02-10 |
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| CN201410361521.XA Expired - Fee Related CN104101426B (en) | 2014-07-25 | 2014-07-25 | Reflective panorama visual angle flame detector |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107796513A (en) * | 2017-11-24 | 2018-03-13 | 深圳世纪通茂高科技研发有限公司 | A kind of long-range flame detector |
| CN110567578A (en) * | 2019-09-30 | 2019-12-13 | 长江大学 | Photoelectric sensing device suitable for weak light detection |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101408512A (en) * | 2008-09-02 | 2009-04-15 | 河南汉威电子股份有限公司 | Multi-channel heat release electric detector |
| CN201242470Y (en) * | 2008-08-18 | 2009-05-20 | 河南汉威电子股份有限公司 | Infrared four-waveband flame detector |
| US7541938B1 (en) * | 2006-03-29 | 2009-06-02 | Darell Eugene Engelhaupt | Optical flame detection system and method |
| CN201464049U (en) * | 2009-07-09 | 2010-05-12 | 吴志洪 | Infrared flame detector |
| CN102221404A (en) * | 2010-03-31 | 2011-10-19 | 株式会社山武 | Flame sensor |
| CN202275475U (en) * | 2011-09-06 | 2012-06-13 | 无锡圣敏传感科技有限公司 | Complete-view infrared flame detector |
| EP2500639A2 (en) * | 2011-03-17 | 2012-09-19 | DDC Limited | Recessed smoke or heat detector |
| CN203024859U (en) * | 2013-01-16 | 2013-06-26 | 山西新思备科技有限公司 | Anti-false-alarm shielding cover of dual-ultraviolet gas flame detector |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0991566A (en) * | 1995-09-20 | 1997-04-04 | Matsushita Electric Works Ltd | Flame sensor and its attachment |
| JPH10241078A (en) * | 1997-02-25 | 1998-09-11 | Matsushita Electric Works Ltd | Flame detector |
| KR100492189B1 (en) * | 2002-09-11 | 2005-06-02 | 주식회사 금륜방재산업 | Discernment device for far distance fire confirmation |
-
2014
- 2014-07-25 CN CN201410361521.XA patent/CN104101426B/en not_active Expired - Fee Related
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7541938B1 (en) * | 2006-03-29 | 2009-06-02 | Darell Eugene Engelhaupt | Optical flame detection system and method |
| CN201242470Y (en) * | 2008-08-18 | 2009-05-20 | 河南汉威电子股份有限公司 | Infrared four-waveband flame detector |
| CN101408512A (en) * | 2008-09-02 | 2009-04-15 | 河南汉威电子股份有限公司 | Multi-channel heat release electric detector |
| CN201464049U (en) * | 2009-07-09 | 2010-05-12 | 吴志洪 | Infrared flame detector |
| CN102221404A (en) * | 2010-03-31 | 2011-10-19 | 株式会社山武 | Flame sensor |
| EP2500639A2 (en) * | 2011-03-17 | 2012-09-19 | DDC Limited | Recessed smoke or heat detector |
| CN202275475U (en) * | 2011-09-06 | 2012-06-13 | 无锡圣敏传感科技有限公司 | Complete-view infrared flame detector |
| CN203024859U (en) * | 2013-01-16 | 2013-06-26 | 山西新思备科技有限公司 | Anti-false-alarm shielding cover of dual-ultraviolet gas flame detector |
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| CN104101426A (en) | 2014-10-15 |
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