CN104748767A - Anti-interference light receiving sensor - Google Patents
Anti-interference light receiving sensor Download PDFInfo
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- CN104748767A CN104748767A CN201510160198.4A CN201510160198A CN104748767A CN 104748767 A CN104748767 A CN 104748767A CN 201510160198 A CN201510160198 A CN 201510160198A CN 104748767 A CN104748767 A CN 104748767A
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- tubular sleeve
- light
- annular ditch
- receiving sensor
- tube
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Abstract
The invention discloses an anti-interference light receiving sensor. The anti-interference light receiving sensor comprises a nontransparent tubular sleeve and a light-sensitive receiving tube, wherein the light-sensitive receiving tube is inserted in one end of the tubular sleeve; a plurality of annular grooves are formed in the inner surface of the tubular sleeve; an included angle between a side wall of each annular groove and the axis of the tubular sleeve is theta which is greater than 0 degree and smaller than 90 degrees; the bottom of each annular groove is perpendicular to the side wall of the annular groove; light emitted from a light transmitting tube which is positioned on the outside of the tubular sleeve and faces the other end of the tubular sleeve is received by the light-sensitive receiving tube via the tubular sleeve; and disturbing light which is parallel to the axis of the tubular sleeve enters the sensor at an optional angle, is repeatedly reflected by the annular grooves in the tubular sleeve and the inner wall of the tubular sleeve, and then is reflected out of the tubular sleeve, so that influences of the disturbing light are eliminated.
Description
Technical field
The present invention relates to a kind of sensor, particularly relate to a kind of in the application of light, the anti-interference optical receiving sensor of one of stray light impact can be eliminated.
Background technology
At present, Detection & Controling product based on light is widely used in non-cpntact measurement and control field, especially infrared light sending and receiving are to pipe with the feature such as low price, stable performance, circuit be simple, are used widely in wireless remote control, safety detection, wireless near field communication etc.Infrared receiving tube is a kind of photodiode, works in reverse bias condition, and when the light intensity of acceptance point changes, corresponding change will occur the electric current of infrared receiving tube.Comprise multiple spectral range such as such as radiowave, infrared ray, visible ray, ultraviolet, X ray, gamma-rays due to solar spectrum, environment or the serious occasion of some light pollution, due to the impact of bias light, make receiving tube normally to work in the open.
In order to eliminate the impact of bias light, the method usually taked is, is covered (as shown in Figure 1) by light receiving tube with a tube, but due to the reflex of tube inwall, cannot obtain desirable anti-jamming effectiveness (as shown in Figure 2).
Summary of the invention
The object of the invention is for existing optical receiver cannot in the open environment use actual conditions, propose a kind of eliminate natural light impact the anti-interference optical receiving sensor of one.
The object of the invention is to be achieved through the following technical solutions: a kind of anti-interference optical receiving sensor, for receiving the light that light-emitting tube sends, it comprises opaque tubular sleeve and photosensitive receiving tube, one end of described photosensitive receiving tube tubular sleeve pipe, the inside surface of described tubular sleeve has some annular ditch grooves, the sidewall of described annular ditch groove and the angle of tubular sleeve axis are θ, 0 ° of < θ < 90 °, the bottom of described annular ditch groove and the sidewalls orthogonal of annular ditch groove; Be positioned at tubular sleeve outer and just to the light that the light-emitting tube of the tubular sleeve other end sends, received by photosensitive receiving tube through tubular sleeve; Stray light, with the non-parallel arbitrarily angled incidence in tubular sleeve axis, is reflected tubular sleeve after the annular ditch groove of tubular sleeve inside and the multiple reflections of inwall.
Further, described θ is 45 °.
Further, described tubular sleeve adopts the material of black or dark color, and the color of material is darker, and the receptivity for stray light is stronger.
Compared with existing interference protection measure, the beneficial effect that the present invention has is: when stray light is with the non-parallel arbitrarily angled incidence in tubular sleeve axis, due to the annular ditch groove of tubular sleeve inside and the multiple reflections of inwall, stray light can be reflected tubular sleeve; Even if stray light is not reflected tubular sleeve, but through multiple reflections consumption, the intensity of stray light is also decayed widely.
Accompanying drawing explanation
Fig. 1 is the conventional interference protection measure using opaque tube;
Fig. 2 is that jamming light source affects schematic diagram;
Fig. 3 is a kind of anti-interference optical receiving sensor schematic diagram;
Fig. 4 is that a kind of anti-interference optical receiving sensor elimination stray light affects schematic diagram;
Fig. 5 is tubular sleeve exploded view.
Embodiment
Describe the present invention in detail with reference to the accompanying drawings below, object of the present invention and effect will become more obvious.
As shown in Figure 3, a kind of anti-interference optical receiving sensor of the present invention, for receiving the light that light-emitting tube sends, it comprises opaque tubular sleeve and photosensitive receiving tube, one end of described photosensitive receiving tube tubular sleeve pipe, the inside surface of described tubular sleeve has some annular ditch grooves, and the sidewall of described annular ditch groove and the angle of tubular sleeve axis are θ, 0 ° of < θ < 90 °, the bottom of described annular ditch groove and the sidewalls orthogonal of annular ditch groove; As shown in Figure 4, tubular sleeve is positioned at outer and just to the light that the light-emitting tube of the tubular sleeve other end sends, received by photosensitive receiving tube through tubular sleeve; Stray light, with the non-parallel arbitrarily angled incidence in tubular sleeve axis, is reflected tubular sleeve after the annular ditch groove of tubular sleeve inside and the multiple reflections of inwall.
Described tubular sleeve, preferably adopt the material of black or dark color, the color of material is darker, and the receptivity for stray light is stronger.The annular ditch groove of described tubular sleeve inside be that 45° angle is distributed as optimum structure with the axis of tubular sleeve, but other angle also has similar effect.At tubular sleeve inside etching annular ditch groove as shown in Figure 3, production technology cannot realize.Fig. 5 (a) has carried out segmentation of structures (shown in dotted line) to tubular sleeve, and can find out, the tubular sleeve shown in Fig. 5 (a) is combined by the modular unit shown in Fig. 5 (b).Module shown in Fig. 5 (c) is by the extension of modular structure Fig. 5 (b) Suo Shi, and its two ends add the interface of convex-concave, and such structure can use mould to produce completely, and the length of tubular sleeve can be regulated by swap modules unit.
The invention provides a kind of optical receiving sensor eliminating natural light impact, eliminated the impact of stray light by the tubular sleeve with certain structural features, breach the working environment limit of classic method, structure is simple, and be easy to realize, anti-jamming effectiveness is good.
The anti-interference optical receiving sensor of one that the present invention describes; described details is only preferably embodiment; but be not only confined to this; its embodiment is not restricted to the described embodiments; the change done under other any does not deviate from the principle of the invention, modification, combination, simplification; all should be the substitute mode of equivalence, be all included within protection scope of the present invention.
Claims (3)
1. an anti-interference optical receiving sensor, for receiving the light that light-emitting tube sends, it is characterized in that, it comprises opaque tubular sleeve and photosensitive receiving tube, one end of described photosensitive receiving tube tubular sleeve pipe, the inside surface of described tubular sleeve has some annular ditch grooves, and the sidewall of described annular ditch groove and the angle of tubular sleeve axis are θ, 0 ° of < θ < 90 °, the bottom of described annular ditch groove and the sidewalls orthogonal of annular ditch groove; Be positioned at tubular sleeve outer and just to the light that the light-emitting tube of the tubular sleeve other end sends, received by photosensitive receiving tube through tubular sleeve; Stray light, with the non-parallel arbitrarily angled incidence in tubular sleeve axis, is reflected tubular sleeve after the annular ditch groove of tubular sleeve inside and the multiple reflections of inwall.
2. a kind of anti-interference optical receiving sensor according to claim 1, it is characterized in that, described θ is 45 °.
3. a kind of anti-interference optical receiving sensor according to claim 1, is characterized in that, described tubular sleeve adopts the material of black or dark color, and the color of material is darker, and the receptivity for stray light is stronger.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510160198.4A CN104748767B (en) | 2015-04-07 | 2015-04-07 | Anti-interference light receiving sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510160198.4A CN104748767B (en) | 2015-04-07 | 2015-04-07 | Anti-interference light receiving sensor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104748767A true CN104748767A (en) | 2015-07-01 |
| CN104748767B CN104748767B (en) | 2017-04-19 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510160198.4A Expired - Fee Related CN104748767B (en) | 2015-04-07 | 2015-04-07 | Anti-interference light receiving sensor |
Country Status (1)
| Country | Link |
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| CN (1) | CN104748767B (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107478609A (en) * | 2016-06-07 | 2017-12-15 | 宁波方太厨具有限公司 | A kind of photo-electric oil smoke sensor |
| CN107478610A (en) * | 2016-06-07 | 2017-12-15 | 宁波方太厨具有限公司 | A kind of photo-electric oil smoke sensor |
| CN107478576A (en) * | 2016-06-07 | 2017-12-15 | 宁波方太厨具有限公司 | A kind of safeguard structure of oil smoke sensor |
| TWI616068B (en) * | 2016-06-20 | 2018-02-21 | Optical communication device resistant to sunlight interference |
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| CN2506977Y (en) * | 2001-10-25 | 2002-08-21 | 王鹏 | Background light eliminating device for semiconductor laser monitoring instrument |
| CN201062963Y (en) * | 2007-04-12 | 2008-05-21 | 武汉工程大学 | Bracket for mounting infrared pair pipes |
| US20100193689A1 (en) * | 2007-09-04 | 2010-08-05 | Masashi Yokota | Infrared signal-receiving unit and electronic device |
| CN202034342U (en) * | 2011-03-21 | 2011-11-09 | 成都旭光光电技术有限责任公司 | Anti-jamming photosensitive receiving tube and anti-jamming ultraviolet photosensitive tube |
| CN203135838U (en) * | 2013-02-21 | 2013-08-14 | 厦门华晟电子有限公司 | Infrared photoelectric switch |
| CN103837172A (en) * | 2014-03-05 | 2014-06-04 | 赵剑毅 | Anti-interference infrared geminate transistors |
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2015
- 2015-04-07 CN CN201510160198.4A patent/CN104748767B/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2506977Y (en) * | 2001-10-25 | 2002-08-21 | 王鹏 | Background light eliminating device for semiconductor laser monitoring instrument |
| CN201062963Y (en) * | 2007-04-12 | 2008-05-21 | 武汉工程大学 | Bracket for mounting infrared pair pipes |
| US20100193689A1 (en) * | 2007-09-04 | 2010-08-05 | Masashi Yokota | Infrared signal-receiving unit and electronic device |
| CN202034342U (en) * | 2011-03-21 | 2011-11-09 | 成都旭光光电技术有限责任公司 | Anti-jamming photosensitive receiving tube and anti-jamming ultraviolet photosensitive tube |
| CN203135838U (en) * | 2013-02-21 | 2013-08-14 | 厦门华晟电子有限公司 | Infrared photoelectric switch |
| CN103837172A (en) * | 2014-03-05 | 2014-06-04 | 赵剑毅 | Anti-interference infrared geminate transistors |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107478609A (en) * | 2016-06-07 | 2017-12-15 | 宁波方太厨具有限公司 | A kind of photo-electric oil smoke sensor |
| CN107478610A (en) * | 2016-06-07 | 2017-12-15 | 宁波方太厨具有限公司 | A kind of photo-electric oil smoke sensor |
| CN107478576A (en) * | 2016-06-07 | 2017-12-15 | 宁波方太厨具有限公司 | A kind of safeguard structure of oil smoke sensor |
| CN107478610B (en) * | 2016-06-07 | 2023-09-15 | 宁波方太厨具有限公司 | Photoelectric type oil smoke sensor |
| CN107478609B (en) * | 2016-06-07 | 2023-10-20 | 宁波方太厨具有限公司 | Photoelectric type oil smoke sensor |
| CN107478576B (en) * | 2016-06-07 | 2024-02-20 | 宁波方太厨具有限公司 | Protective structure of oil smoke sensor |
| TWI616068B (en) * | 2016-06-20 | 2018-02-21 | Optical communication device resistant to sunlight interference | |
| US10236087B2 (en) | 2016-06-20 | 2019-03-19 | Ir-Tec International Ltd. | Remote control protector for anti-light interference |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104748767B (en) | 2017-04-19 |
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Granted publication date: 20170419 Termination date: 20210407 |