CN104748767B - Anti-interference light receiving sensor - Google Patents
Anti-interference light receiving sensor Download PDFInfo
- Publication number
- CN104748767B CN104748767B CN201510160198.4A CN201510160198A CN104748767B CN 104748767 B CN104748767 B CN 104748767B CN 201510160198 A CN201510160198 A CN 201510160198A CN 104748767 B CN104748767 B CN 104748767B
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- China
- Prior art keywords
- tubular sleeve
- light
- interference
- receiving sensor
- annular ditch
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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, more particularly to it is a kind of in the application of light, can eliminate interference light affects
A kind of anti-interference optical receiving sensor.
Background technology
At present, it is widely used in non-cpntact measurement with control field based on the Detection ＆ Controling product of light, it is especially red
Outer smooth sending and receiving to pipe with the feature such as low price, stable performance, circuit be simple, wireless remote control, safety detection, closely without
The aspects such as line communication are used widely.Infrared receiving tube is a kind of photodiode, works in reverse bias condition, works as reception
When the luminous intensity of point changes, the electric current of infrared receiving tube will occur corresponding change.Because solar spectrum is included such as
Multiple spectral ranges such as radio wave, infrared ray, visible ray, ultraviolet, X-ray, gamma-rays, in open-air atmosphere or some light
With serious pollution occasion, due to the impact of bias light so that reception pipe cannot normal work.
In order to eliminate the impact of bias light, the method being usually taken is light receiving tube to be covered (such as Fig. 1 with a tube
It is shown), but due to the reflex of tube inwall, it is impossible to obtain preferable anti-jamming effectiveness (as shown in Figure 2).
The content of the invention
The purpose of the present invention is the actual conditions that cannot be used in open-air atmosphere for existing optical receiver, it is proposed that a kind of
Eliminate a kind of anti-interference optical receiving sensor that natural light affects.
The purpose of the present invention is achieved through the following technical solutions：A kind of anti-interference optical receiving sensor, for connecing
The light that light-emitting tube sends is received, it includes opaque tubular sleeve and photosensitive receiving tube, the photosensitive receiving tube inserts tubular casing
One end of pipe, the inner surface of the tubular sleeve is provided with some annular ditch grooves, side wall and the tubular sleeve axle of the annular ditch groove
The angle of line is θ, and 0 ° of 90 ° of ＜ θ ＜, the bottom of the annular ditch groove is vertical with the side wall of annular ditch groove；Outside tubular sleeve
And the light that just light-emitting tube of the tubular sleeve other end is sent, Jing tubular sleeves are by photosensitive receiving tube reception；Interference light is with non-
Parallel to the arbitrarily angled incidence of tubular sleeve axis, the quilt Jing after the multiple reflections of the annular ditch groove inside tubular sleeve and inwall
Reflect tubular sleeve.
Further, the θ is 45 °.
Further, the tubular sleeve is using black or the material of dark color, and the color of material is deeper, for interference light
Absorbability is stronger.
Compared with existing interference protection measure, the invention has the advantages that：Interference light is with non-parallel to tubular casing
Pipe axis it is arbitrarily angled incident when, due to the multiple reflections of the annular ditch groove inside tubular sleeve and inwall, interference light can quilt
Reflect tubular sleeve；Even if interference light is not reflected tubular sleeve, but through multiple reflections consumption, disturbs the intensity of light
Greatly decayed.
Description of the drawings
Fig. 1 is the conventional interference protection measure for 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 eliminates interference light impact schematic diagram；
Fig. 5 is tubular sleeve exploded view.
Specific embodiment
The present invention is described in detail below according to accompanying drawing, the purpose of the present invention and effect will be apparent from.
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 is wrapped
Opaque tubular sleeve and photosensitive receiving tube are included, the photosensitive receiving tube inserts one end of tubular sleeve, the tubular sleeve
Inner surface is provided with some annular ditch grooves, and the side wall of the annular ditch groove and the angle of tubular sleeve axis are θ, 0 ° of 90 ° of ＜ θ ＜,
The bottom of the annular ditch groove is vertical with the side wall of annular ditch groove；As shown in figure 4, being located at outside tubular sleeve and just to tubular sleeve
The light that the light-emitting tube of the other end sends, Jing tubular sleeves are received by photosensitive receiving tube；Interference light is with non-parallel to tubular sleeve
The arbitrarily angled incidence of axis, Jing after the multiple reflections of the annular ditch groove inside tubular sleeve and inwall tubular casing is reflected
Pipe.
The tubular sleeve, preferably with black or the material of dark color, the color of material is deeper, for the absorption of interference light
Ability is stronger.Annular ditch groove inside the tubular sleeve, optimum structure is distributed as with the axis of tubular sleeve in 45° angle, but
It is that other angle also has similar effect.Annular ditch groove as shown in Figure 3 is etched inside tubular sleeve, in production technology
On cannot realize.Fig. 5 (a) has carried out segmentation of structures to tubular sleeve (shown in dotted line), it can be seen that the tubulose shown in Fig. 5 (a)
Sleeve pipe is that the modular unit by shown in Fig. 5 (b) is combined.Module shown in Fig. 5 (c) is the modular structure by shown in Fig. 5 (b)
Extend, its two ends increased the interface of convex-concave, such structure can be produced completely using mould, the length of tubular sleeve can be with
Adjusted by swap modules unit.
The invention provides a kind of eliminate the optical receiving sensor that natural light affects, by the pipe with certain structural features
Shape sleeve pipe eliminates the impact of interference light, breaches the working environment limit of conventional method, simple structure, it is easy to accomplish, it is anti-interference
Effect is good.
A kind of anti-interference optical receiving sensor of present invention description, described details is only preferably embodiment, but
This is not intended to be limited to, embodiments thereof is simultaneously not restricted to the described embodiments, it is other any without departing from the principle of the invention
Lower made change, modification, combination, simplify, should be equivalent substitute mode, be all contained in protection scope of the present invention it
It is interior.
Claims (3)
1. a kind of anti-interference optical receiving sensor, for receiving the light that light-emitting tube sends, it is characterised in that it includes opaque
Tubular sleeve and photosensitive receiving tube, the photosensitive receiving tube inserts one end of tubular sleeve, and the inner surface of the tubular sleeve is opened
There are some annular ditch grooves, the side wall of the annular ditch groove and the angle of tubular sleeve axis are θ, 0 °<θ<90 °, the annular groove
The bottom of groove is vertical with the side wall of annular ditch groove；Outside tubular sleeve and just the light-emitting tube of the tubular sleeve other end is being sent
Light, Jing tubular sleeves by photosensitive receiving tube receive；Interference light is with non-parallel to the arbitrarily angled incidence of tubular sleeve axis, Jing
Tubular sleeve is reflected after annular ditch groove inside tubular sleeve and the multiple reflections of inwall.
2. a kind of anti-interference optical receiving sensor according to claim 1, it is characterised in that the θ is 45 °.
3. a kind of anti-interference optical receiving sensor according to claim 1, it is characterised in that the tubular sleeve adopts black
Material, the color of material is deeper, stronger for the absorbability of interference light.
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 CN104748767A (en) | 2015-07-01 |
| CN104748767B true CN104748767B (en) | 2017-04-19 |
Family
ID=53588804
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 |
|---|---|
| CN (1) | CN104748767B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
Family Cites Families (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 |
| WO2009031352A1 (en) * | 2007-09-04 | 2009-03-12 | Sharp Kabushiki Kaisha | Infrared signal reception 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 |
-
2015
- 2015-04-07 CN CN201510160198.4A patent/CN104748767B/en not_active Expired - Fee Related
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| Publication number | Publication date |
|---|---|
| CN104748767A (en) | 2015-07-01 |
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| CF01 | Termination of patent right due to non-payment of annual fee |