CN104101426A - Reflection-type panoramic view angle flame detector - Google Patents
Reflection-type panoramic view angle flame detector Download PDFInfo
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- CN104101426A CN104101426A CN201410361521.XA CN201410361521A CN104101426A CN 104101426 A CN104101426 A CN 104101426A CN 201410361521 A CN201410361521 A CN 201410361521A CN 104101426 A CN104101426 A CN 104101426A
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- flame detector
- pyroelectric sensor
- visual angle
- printing opacity
- concave mirror
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Abstract
The invention discloses a reflection-type panoramic view angle flame detector which comprises a support casing. A concave reflection mirror and a signal processing circuit board are arranged in the support casing, a high reflection film is plated on the surface of the concave reflection mirror, a pyroelectric sensor is arranged at the convergence focus position of the concave reflection mirror and is connected with the signal processing circuit board through a flexible circuit board, and a hemispherical light transmission mask is arranged on the outer portion of the pyroelectric sensor and is connected with the support casing. In a flame burning process, after burning spectrum incident light in any direction is reflected by the concave reflection mirror, the reflected light enters the pyroelectric sensor an in incidence mode, so that panoramic view angle detection is achieved.
Description
Technical field
The present invention relates to flame detector, relate in particular 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 is that the spectral information of comburant is detected.Due to the field of view angle maximum that generally adopts pyroelectric sensor in flame detector 120 degree only, therefore for eliminating detection blind area, flame detector for single-sensor structure generally adopts the laying mode of intersecting, or adopts dual sensor structure (as patent 201220645912).For further expanding flame detector, survey visual angle, patent 201120332965 proposes the structure that four pyroelectric sensor semispheres are arranged, but the mode that this simple dependence increases pyroelectric sensor quantity had both increased detector cost, had strengthened 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:
A kind of reflective panorama visual angle flame detector is provided, comprises 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; Remittance focal spot at concave mirror is placed pyroelectric sensor, and 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, thereby realizes the flame detecting at panorama visual angle.
In the flame detector of reflective panorama of the present invention visual angle, the reflected wavelength range of highly reflecting films is 3.6-5.2 microns.
In the flame detector of reflective panorama of the present invention visual angle, cover plate for sealing is passed through at the back of this support housing.
In the flame detector of reflective panorama of the present invention visual angle, this printing opacity face shield is glass mask.
In the flame detector of reflective panorama of the present invention visual angle, described pyroelectric sensor is three-wavelength pyroelectricity probe.
In the flame detector of reflective panorama of the present invention visual angle, signal processing circuit board is positioned over the back of concave mirror.
In the flame detector of reflective panorama of the present invention visual angle, this pyroelectric sensor is placed in printing opacity face shield inside top.
In the flame detector of reflective panorama of the present invention visual angle, 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 to realize panorama visual angle flame detecting, effectively avoided simple dependence to increase the method that pyroelectric sensor quantity increases detection area, reduce production cost and production complexity, reduced the quantity of on-the-spot 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 reflective panorama of embodiment of the present invention visual angle flame detector schematic diagram;
Fig. 2 is the reflective panorama of embodiment of the present invention visual angle flame detector explosive view;
Fig. 3 is the reflective panorama of embodiment of the present invention visual angle light path schematic diagram.
Embodiment
In order to make object of the present invention, technical scheme and advantage clearer, 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, is not intended to limit the present invention.
With shown in Fig. 2, the reflective panorama of embodiment of the present invention visual angle flame detector 1 comprises support housing 7, in this support housing 7, is provided with concave mirror 3 as shown in Figure 1, 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.
These concave mirror 3 surfaces are coated with one deck highly reflecting films; Remittance focal spot at concave mirror 3 is placed a pyroelectric sensor 4, this pyroelectric sensor 4 is connected with signal processing circuit board 6 by flexible PCB 5, these pyroelectric sensor 4 outsides are provided with hemispheric printing opacity face shield 2, and this printing opacity face shield 2 is connected with support housing 7.When having flame combustion, the burning spectrum incident ray of any direction is after concave mirror reflection, and reflection ray enters to inject pyroelectric sensor, thereby 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 corresponding signal amplification, 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, and the first guarantees that as translucent element flame combustion spectrum enters detector inside, and it two is inner as shell protection detector.
Concave mirror 3 surfaces are coated with highly reflecting films according to flame combustion spectral range, the three-wavelength pyroelectricity probe that in a preferred embodiment of the present invention, pyroelectric sensor 4 adopts, and the reflected wavelength range of highly reflecting films should be 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 seals by cover plate 8, so that support housing 7 inner members are protected.
During flame combustion, as shown in Figure 3, any direction burning spectrum incident ray 9 is after concave mirror 3 reflections, and reflection ray 10 enters to inject pyroelectric sensor 4, thereby realizes the flame detecting at panorama visual angle.
To sum up, the present invention only utilizes a pyroelectric sensor to coordinate reflective optical structure to realize panorama visual angle flame detecting.Effectively avoid simple dependence to increase the method that pyroelectric sensor quantity increases detection area, reduced production cost and production complexity, reduced 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 improvement and conversion all should belong to the protection domain of claims of the present invention.
Claims (8)
1. a reflective panorama visual angle flame detector, is characterized in that, comprises support housing, is provided with concave mirror and signal processing circuit board in this support housing, and this concave mirror surface is coated with one deck highly reflecting films; Remittance focal spot at concave mirror is placed pyroelectric sensor, and 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 having 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 according to claim 1 visual angle flame detector, is characterized in that, the reflected wavelength range of highly reflecting films is 3.6-5.2 microns.
3. reflective panorama according to claim 1 visual angle flame detector, is characterized in that, cover plate for sealing is passed through at the back of this support housing.
4. reflective panorama according to claim 1 visual angle flame detector, is characterized in that, this printing opacity face shield is glass mask.
5. reflective panorama according to claim 1 visual angle flame detector, is characterized in that, described pyroelectric sensor is three-wavelength pyroelectricity probe.
6. reflective panorama according to claim 1 visual angle flame detector, is characterized in that, signal processing circuit board is positioned over the back of concave mirror.
7. reflective panorama according to claim 1 visual angle flame detector, is characterized in that, this pyroelectric sensor is placed in printing opacity face shield inside top.
8. reflective panorama according to claim 1 visual angle flame detector, 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 |
|---|---|---|---|
| CN201410361521.XA CN104101426B (en) | 2014-07-25 | 2014-07-25 | Reflective panorama visual angle flame detector |
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| CN104101426A true CN104101426A (en) | 2014-10-15 |
| CN104101426B CN104101426B (en) | 2016-02-10 |
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| CN201410361521.XA Active CN104101426B (en) | 2014-07-25 | 2014-07-25 | Reflective panorama visual angle flame detector |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
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| 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 |
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2014
- 2014-07-25 CN CN201410361521.XA patent/CN104101426B/en active Active
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
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| 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 |
| KR20040023322A (en) * | 2002-09-11 | 2004-03-18 | 주식회사 금륜방재산업 | Discernment device for far distance fire confirmation |
| 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 |
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| EP2500639A2 (en) * | 2011-03-17 | 2012-09-19 | DDC Limited | Recessed smoke or heat detector |
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| 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 |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
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| Publication number | Publication date |
|---|---|
| CN104101426B (en) | 2016-02-10 |
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