CN104748767B - Anti-interference light receiving sensor - Google Patents
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- 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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Abstract
本发明公开了一种抗干扰光接收传感器，包括不透明管状套管和光敏接收管，所述光敏接收管插入管状套管的一端，所述管状套管的内表面开有若干环状沟槽，所述环状沟槽的侧壁与管状套管轴线的夹角为θ，0°＜θ＜90°，所述环状沟槽的底部与环状沟槽的侧壁垂直；位于管状套管外且正对管状套管另一端的光发射管发出的光，经管状套管由光敏接收管接收；干扰光以非平行于管状套管轴线的任意角度入射，经管状套管内部的环状沟槽与内壁的多次反射后被反射出管状套管，从而消除干扰光的影响。
The invention discloses an anti-interference light receiving sensor, which comprises an opaque tubular sleeve and a photosensitive receiving tube, the photosensitive receiving tube is inserted into one end of the tubular sleeve, and the inner surface of the tubular sleeve is provided with several annular grooves. The angle between the side wall of the annular groove and the axis of the tubular sleeve is θ, 0°<θ<90°, the bottom of the annular groove is perpendicular to the side wall of the annular groove; The light emitted by the light emitting tube outside and facing the other end of the tubular sleeve is received by the photosensitive receiving tube through the tubular sleeve; the interfering light is incident at any angle that is not parallel to the axis of the tubular sleeve, and passes through the annular tube inside the tubular sleeve. Multiple reflections from the grooves and inner walls are reflected out of the tubular sleeve, thereby eliminating the effect of interfering light.
Description
技术领域technical field
本发明涉及一种传感器，尤其涉及一种在光的应用领域中，可以消除干扰光影响的一种抗干扰光接收传感器。The invention relates to a sensor, in particular to an anti-interference light receiving sensor which can eliminate the influence of interference light in the application field of light.
背景技术Background technique
目前，基于光的检测与控制产品在非接触测量与控制领域中应用广泛，尤其是红外光收、发对管以价格便宜、性能稳定、电路简单等特征，在无线遥控、安全检测、近距离无线通信等方面得到广泛应用。红外接收管是一种光敏二极管，工作于反向偏压状态，当接收点的光强度发生变化时，红外接收管的电流就会发生相应的变化。由于太阳光谱包括诸如无线电波、红外线、可见光、紫外线、X射线、γ射线等多个波谱范围，在露天环境或者一些光污染严重的场合，由于背景光的影响，使得接收管无法正常工作。At present, light-based detection and control products are widely used in the field of non-contact measurement and control, especially in the field of wireless remote control, safety detection, short-distance It has been widely used in wireless communication and other aspects. The infrared receiving tube is a photosensitive diode, which works in a reverse bias state. When the light intensity of the receiving point changes, the current of the infrared receiving tube will change accordingly. Since the solar spectrum includes multiple spectral ranges such as radio waves, infrared rays, visible light, ultraviolet rays, X-rays, and gamma rays, the receiving tube cannot work normally due to the influence of background light in open-air environments or places with severe light pollution.
为了消除背景光的影响，通常采取的方法是，用一管状物将光接收管罩住(如图1所示)，但由于管状物内壁的反射作用，无法取得理想的抗干扰效果(如图2所示)。In order to eliminate the influence of background light, the usual method is to cover the light-receiving tube with a tubular object (as shown in Figure 1), but due to the reflection of the inner wall of the tubular object, the ideal anti-interference effect cannot be obtained (as shown in Figure 1). 2).
发明内容Contents of the invention
本发明的目的是针对现有光接收器无法在露天环境使用的实际情况，提出了一种消除自然光影响的一种抗干扰光接收传感器。The purpose of the present invention is to propose an anti-interference light receiving sensor that eliminates the influence of natural light for the actual situation that the existing light receiver cannot be used in the open air.
本发明的目的是通过以下技术方案来实现的：一种抗干扰光接收传感器，用于接收光发射管发出的光，它包括不透明管状套管和光敏接收管，所述光敏接收管插入管状套管的一端，所述管状套管的内表面开有若干环状沟槽，所述环状沟槽的侧壁与管状套管轴线的夹角为θ，0°＜θ＜90°，所述环状沟槽的底部与环状沟槽的侧壁垂直；位于管状套管外且正对管状套管另一端的光发射管发出的光，经管状套管由光敏接收管接收；干扰光以非平行于管状套管轴线的任意角度入射，经管状套管内部的环状沟槽与内壁的多次反射后被反射出管状套管。The purpose of the present invention is achieved through the following technical solutions: an anti-interference light receiving sensor for receiving the light emitted by the light emitting tube, which includes an opaque tubular sleeve and a photosensitive receiving tube, the photosensitive receiving tube is inserted into the tubular sleeve At one end of the pipe, the inner surface of the tubular sleeve is provided with a number of annular grooves, the angle between the side wall of the annular groove and the axis of the tubular sleeve is θ, 0°<θ<90°, the The bottom of the annular groove is perpendicular to the sidewall of the annular groove; the light emitted by the light emitting tube facing the other end of the tubular sleeve outside the tubular sleeve is received by the photosensitive receiving tube through the tubular sleeve; Incident at any angle not parallel to the axis of the tubular casing, it is reflected out of the tubular casing after multiple reflections by the annular groove inside the tubular casing and the inner wall.
进一步地，所述θ为45°。Further, the θ is 45°.
进一步地，所述管状套管采用黑色或深色的材料，材料的颜色越深，对于干扰光的吸收能力越强。Further, the tubular sleeve is made of black or dark material, and the darker the color of the material, the stronger the ability to absorb disturbing light.
与现有的抗干扰措施相比，本发明具有的有益效果是：干扰光以非平行于管状套管轴线的任意角度入射时，由于管状套管内部的环状沟槽与内壁的多次反射，干扰光会被反射出管状套管；干扰光即使未被反射出管状套管，但经过多次反射消耗，干扰光的强度也被大大地衰减。Compared with the existing anti-interference measures, the present invention has the beneficial effect that when the interfering light is incident at any angle not parallel to the axis of the tubular sleeve, due to the multiple reflections between the annular groove inside the tubular sleeve and the inner wall , the interfering light will be reflected out of the tubular casing; even if the interfering light is not reflected out of the tubular casing, the intensity of the interfering light will be greatly attenuated after being consumed by multiple reflections.
附图说明Description of drawings
图1是使用不透明管状物的常规抗干扰措施；Figure 1 is a conventional anti-jamming measure using an opaque tube;
图2是干扰光源影响示意图；Figure 2 is a schematic diagram of the influence of interfering light sources;
图3是一种抗干扰光接收传感器示意图；Fig. 3 is a schematic diagram of an anti-jamming light receiving sensor;
图4是一种抗干扰光接收传感器消除干扰光影响示意图；Fig. 4 is a schematic diagram of an anti-interference light receiving sensor for eliminating the influence of interference light;
图5是管状套管分解图。Figure 5 is an exploded view of the tubular sleeve.
具体实施方式detailed description
下面根据附图详细描述本发明，本发明的目的和效果将变得更加明显。The purpose and effects of the present invention will become more apparent by describing the present invention in detail below with reference to the accompanying drawings.
如图3所示，本发明一种抗干扰光接收传感器，用于接收光发射管发出的光，它包括不透明管状套管和光敏接收管，所述光敏接收管插入管状套管的一端，所述管状套管的内表面开有若干环状沟槽，所述环状沟槽的侧壁与管状套管轴线的夹角为θ，0°＜θ＜90°，所述环状沟槽的底部与环状沟槽的侧壁垂直；如图4所示，位于管状套管外且正对管状套管另一端的光发射管发出的光，经管状套管由光敏接收管接收；干扰光以非平行于管状套管轴线的任意角度入射，经管状套管内部的环状沟槽与内壁的多次反射后被反射出管状套管。As shown in Figure 3, an anti-interference light receiving sensor of the present invention is used to receive the light emitted by the light emitting tube, and it includes an opaque tubular sleeve and a photosensitive receiving tube, and the photosensitive receiving tube is inserted into one end of the tubular sleeve, so that There are several annular grooves on the inner surface of the tubular sleeve, the angle between the side wall of the annular groove and the axis of the tubular sleeve is θ, 0°<θ<90°, the angle of the annular groove The bottom is perpendicular to the sidewall of the annular groove; as shown in Figure 4, the light emitted by the light emitting tube located outside the tubular sleeve and facing the other end of the tubular sleeve is received by the photosensitive receiving tube through the tubular sleeve; the interfering light Incident at any angle not parallel to the axis of the tubular casing, it is reflected out of the tubular casing after multiple reflections by the annular groove inside the tubular casing and the inner wall.
所述管状套管，最好采用黑色或深色的材料，材料的颜色越深，对于干扰光的吸收能力越强。所述管状套管内部的环状沟槽，与管状套管的轴线呈45°角分布为最佳结构，但是另外的角度也具有类似的效果。在管状套管内部刻蚀如图3所示的环状沟槽，在生产工艺上无法实现。图5(a)对管状套管进行了结构分割(虚线所示)，可以看出，图5(a)所示的管状套管是由图5(b)所示的模块单元组合而成。图5(c)所示的模块是由图5(b)所示模块结构的延伸，其两端增加了凸凹的接口，这样的结构完全可以使用模具生产，管状套管的长度可以通过增减模块单元来调节。The tubular casing is preferably made of black or dark material, and the darker the color of the material, the stronger the ability to absorb disturbing light. The annular groove inside the tubular casing is distributed at an angle of 45° to the axis of the tubular casing, which is the optimal structure, but other angles also have similar effects. Etching the annular groove as shown in FIG. 3 inside the tubular casing cannot be realized in the production process. Figure 5(a) divides the structure of the tubular casing (shown by the dotted line), and it can be seen that the tubular casing shown in Figure 5(a) is composed of the modular units shown in Figure 5(b). The module shown in Figure 5(c) is an extension of the module structure shown in Figure 5(b), with convex and concave interfaces added at both ends, such a structure can be produced using molds, and the length of the tubular sleeve can be increased or decreased by Modular units to adjust.
本发明提供了一种消除自然光影响的光接收传感器，通过具有特定结构特征的管状套管消除干扰光的影响，突破了传统方法的工作环境极限，结构简单，易于实现，抗干扰效果好。The invention provides a light receiving sensor that eliminates the influence of natural light, eliminates the influence of interference light through a tubular sleeve with specific structural characteristics, breaks through the working environment limit of the traditional method, has a simple structure, is easy to implement, and has a good anti-interference effect.
本发明描述的一种抗干扰光接收传感器，所述的细节仅仅为较佳的实施方式，但并非仅仅局限于此，其实施方式并不受上述实施例的限制，其它的任何未背离本发明原理下所作的改变、修饰、组合、简化，均应为等效的置换方式，均包含在本发明的保护范围之内。An anti-jamming light-receiving sensor described in the present invention, the details described are only preferred implementations, but not limited thereto, and its implementation is not limited by the above examples, and any other does not depart from the present invention Changes, modifications, combinations, and simplifications made under the principle should all be equivalent replacement methods, and all are included in the protection scope of the present invention.
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| CN107478609B (en) * | 2016-06-07 | 2023-10-20 | 宁波方太厨具有限公司 | Photoelectric type 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 |
| CN107478576B (en) * | 2016-06-07 | 2024-02-20 | 宁波方太厨具有限公司 | Protective structure of oil smoke sensor |
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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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