CN103438914A - Dustproof and high-sensitivity photoelectric sensor - Google Patents
Dustproof and high-sensitivity photoelectric sensor Download PDFInfo
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- CN103438914A CN103438914A CN2013104021977A CN201310402197A CN103438914A CN 103438914 A CN103438914 A CN 103438914A CN 2013104021977 A CN2013104021977 A CN 2013104021977A CN 201310402197 A CN201310402197 A CN 201310402197A CN 103438914 A CN103438914 A CN 103438914A
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Abstract
Provided is a dustproof and high-sensitivity photoelectric sensor. A sealing space, which is formed by a sealing case and glass window, is provided with a reflecting mirror group and a photosensitive element. After sunlight irradiates to the photoelectric sensor from a light through hole on the sealing case, sunlight is reflected twice via a plane mirror group and then irradiated to the photosensitive element to perform photoelectric sensing. Advantages of the dustproof and high-sensitivity photoelectric sensor are that: a device is installed in a sealing way so that dust and other impurities in the air can be prevented from polluting the photosensitive element; a light-absorbing coating layer is painted on the light through hole so that influence on detection effect caused by scattered light of other objects apart from sunlight can be prevented; and with reflecting effect of the plane mirror group arranged in the internal part of the device, effective incident light range can be greatly enhanced, sensing sensitivity of the photoelectric sensor is enhanced and thus reaction speed of the device is further enhanced. The dustproof and high-sensitivity photoelectric sensor is simple in structure and convenient to use.
Description
Technical field
The present invention relates to solar photoelectric tracking technique field.
Background technology
In recent years, the development and utilization of sun power has become one of important content of novel energy research.Wherein solar electrical energy generation is the principal mode that sun power utilizes.Solar electrical energy generation mode commonly used has solar energy power generating and solar energy thermal-power-generating, these two kinds of generation modes all need the running orbit of the sun is carried out to track and localization, in order to improve the utilization factor of sun power, photoelectric sensor is one of important component part of solar automatic tracking system.
At present, photoelectric sensor commonly used comprises iris type photoelectric sensor, pyramid photoelectric sensor and light cartridge type photoelectric sensor.The iris type photosensor structure is simple, cost is low, easy for installation, but its sensing accuracy is not high, easily is subject to the impact of external light source or other object scattered light, operation stability is lower; The pyramid photosensor structure is simple, cost is lower, it is more convenient to install, and it is high that the relative iris type of tracking accuracy is wanted, but it is identical with iris type, also can be subject to the impact of external light source or other object scattered light, and operation stability is not high; Light cartridge type photosensor structure is complicated, cost is higher, install and coordinate more complicatedly, but it has solved the problem that iris type and pyramid are subject to external light source and object stray light effects, during general high-precision sensing, usually makes with light cartridge type photoelectric sensor.When above three kinds of photoelectric sensors are used in outdoor environment, can be subject to the impact of dust in air, after light activated element is contaminated, can affect photosensitive effect, shorten service life of equipment; Light cartridge type photoelectric sensor sensing mode is subject to the restriction of equipment own vol in addition, and it is long that its light cylinder can not be done, and the light path of effectively working is shorter, and the length of light path directly has influence on the sensitivity of photoelectric sensor.
In prior art and device about photoelectric sensor: " solar tracking system " (patent No. ZL 200710094062.3) disclose a kind of solar tracking system that is used in solar panels, this system is placed in four light sensing components respectively four orientation of base material, and correspondence is equipped with four sleeves, each sleeve all has and substrate surface opening in the slope, be set on its corresponding light sensing component, the opening of four sleeve ramp is back to the rotation center of base material, the inclined open design of this invention based on sleeve, reduced the impact of spurious rays on inner light sensing component, " full-automatic high precision sun tracking means and tracking thereof based on PSD " (patent No. ZL 200810123085.7) disclose a kind of full-automatic high precision sun tracking means based on PSD, this device sun position sensor is by the sensing base, lid with sunshine incident aperture, the shading bucket, PSD, the PSD base, can automatically regulate the light intensity self-checking device that shines light intensity on PSD and the light path protective cover that semisphere is blocked dust and rainwater composition, lid is arranged on the shading bucket by four screws, PSD is arranged on the PSD base, the PSD base connects by shading bucket internal thread and shading bucket, this structural design has improved the precision of sun tracker, reduced cost simultaneously.But above equipment is affected by volume, long effective work light path can't be set, the equipment luminous sensitivity is limited.
" sun tracking positioning device " (patent No. ZL 200710115907.2) disclose a kind of sun tracking positioning device, it comprises cylinder case, the plane antireflection mirror, plane mirror, photoresistance network and electromechanical controlling device, wherein on a side end face of cylinder case, have the hole of the anti-reflection mirror of holding plane, be provided with plane mirror on the opposite side end face, some photoresistance networks symmetrically distribute around the plane antireflection mirror, and the photoresistance network is connected with electromechanical controlling device, this invention sun light beam when work makes to incide on level crossing by the plane antireflection mirror, and then reflex on the photoresistance network, utilize the skew of reflection ray and incident ray to judge the position of the sun, this equipment has advantages of to be installed simple and convenient and follows the tracks of accurately high, " wide-domain high-sensitivity sun-tracking sensor " (patent No. ZL 200810071374.7) disclose a kind of wide-domain high-sensitivity sun-tracking sensor, can be used for the real-time follow-up of the solar azimuth of solar energy heating, heat-collecting system and solar photovoltaic generation system.It is characterized by: comprise photoelectric cell, a slice double-surface mirror reflector sheet and an isosceles triangle support that a pair of parameter is identical, form a described sensor, two photoelectric cells are contained in respectively on two inclined-planes of isosceles triangle support, the double-surface mirror reflector sheet is contained on the bisector of two photoelectric cell diplomacy, and this method for designing sensitization degree of accuracy is higher.But above equipment can't solve the impact of scattered light for light activated element, thereby cause the equipment luminous sensitivity limited.
" azimuth sensor based on Y-type layout of photovoltaic cells and sun tracker " (patent No. ZL 200910035942. 2) disclose a kind of azimuth sensor and sun tracker based on Y-type layout of photovoltaic cells, comprise the azimuth sensor of surveying for solar azimuth, described azimuth sensor is connected with the acquisition system for signals collecting, it is characterized in that: the solar azimuth angle transducer is by three the photoelectric cell that the Y type is evenly distributed on base and forms, three photoelectric cells are mutually the 120o angle in the ground projection of base, this azimuth sensor is arranged on The Cloud Terrace, The Cloud Terrace is connected with cradle head controllor, cradle head controllor is connected with computing machine.The present invention has realized can following the tracks of in real time to the large visual field of the sun, accurate without calendar, more than the tracking alignment precision can reach 0.1o, has greatly improved the conversion efficiency of sun power.But this equipment is open tracking means, both can't eliminate the impact of scattered light on system sensitivity, also without dust guard, long-term work is in outdoor environment the time, and equipment precision can be subject to dust to affect the accumulation variation.
In sum, also do not have at present will to prevent dust, eliminate stray light effects and increase effectively these three kinds of optoelectronic sensor devices that advantage combines of work light path.
Summary of the invention
Both the purpose of this invention is to provide and can prevent dust, eliminate stray light effects, and can improve again the high sensitivity photosensors of effective work light path.
the present invention isa kind of dustproof high sensitivity photosensors, this photoelectric sensor is comprised of seal box 1, light hole 2, windowpane 3, light-absorbing coating 4, level crossing group 5 and photo-sensitive cell 6; Wherein on seal box 1, have light hole 2; Light-absorbing coating 4 is coated on the hole wall of light hole 2; Windowpane 3 is installed on the place, aperture of light hole 2, with the common formation confined space of seal box 1; Photo-sensitive cell 6 is installed on seal box 1 inner chamber upside wall; Level crossing group 5 symmetries are installed on seal box 1 inner chamber downside wall, and one rectifies light hole 2, and the other end is over against photo-sensitive cell 6.
usefulness of the present invention is:the high sensitivity photosensors of should preventing dust is when work, and light, by light hole access arrangement inside, after the reflection of level crossing group, is radiated on photoelectric sensor.Because equipment is installed on seal box inside, therefore can prevent airborne contamination by dust photo electric sensitive element; The light hole wall scribbles light absorbent, can prevent that induction impacts scattered light to equipment; Through the level crossing group, reflection can greatly increase the photoelectric sensor light path of effectively working to light in the certain space volume, improves device sensitivity.
The accompanying drawing explanation
Fig. 1 is structural representation of the present invention.
Embodiment
as shown in Figure 1, the present invention isa kind of dustproof high sensitivity photosensors, this photoelectric sensor is comprised of seal box 1, light hole 2, windowpane 3, light-absorbing coating 4, level crossing group 5 and photo-sensitive cell 6; Wherein on seal box 1, have light hole 2; Light-absorbing coating 4 is coated on the hole wall of light hole 2; Windowpane 3 is installed on the place, aperture of light hole 2, with the common formation confined space of seal box 1; Photo-sensitive cell 6 is installed on seal box 1 inner chamber upside wall; Level crossing group 5 symmetries are installed on seal box 1 inner chamber downside wall, and one rectifies light hole 2, and the other end is over against photo-sensitive cell 6.
asshown in Fig. 1, seal box 1 is connected with windowpane 3, the sealing installation environment of construction system, and free from dust access arrangement inside while having guaranteed outside work, pollute photo-sensitive cell 6; Scribble light-absorbing coating 4 on the hole wall of light hole 2, can prevent that other object reflected light except sunshine from injecting device interior, eliminate the impact of scattered beam on system works; Light by light hole 2 access arrangements after through the reflection of level crossing group 5, shine on photo-sensitive cell 6, in this process, the reflection of level crossing group 5 significantly increases effective incident light path, so just can greatly improve device sensitivity, and then improves equipment reaction speed.
as shown in Figure 1, seal box 1 profile is rectangular parallelepiped.Light hole 2 is round, and windowpane 3 adopts pyroceram to make.
as shown in Figure 1, foundationaccording to the device sensitivity requirement, level crossing group 5 can be comprised of two plane mirrors, or is comprised of a plurality of plane mirrors.
Claims (4)
1. a dustproof high sensitivity photosensors, it is characterized in that: this photoelectric sensor is comprised of seal box (1), light hole (2), windowpane (3), light-absorbing coating (4), level crossing group (5) and photo-sensitive cell (6); Wherein on seal box (1), have light hole (2); Light-absorbing coating (4) is coated on the hole wall of light hole (2); Windowpane (3) is installed on the place, aperture of light hole (2), with seal box (1), jointly forms confined space; Photo-sensitive cell (6) is installed on seal box (1) inner chamber upside wall; Level crossing group (5) symmetry is installed on seal box (1) inner chamber downside wall, and one rectifies light hole (2), and the other end is over against photo-sensitive cell (6).
2. dustproof high sensitivity photosensors according to claim 1, it is characterized in that: seal box (1) profile is rectangular parallelepiped.
3. dustproof high sensitivity photosensors according to claim 1 is characterized in that: light hole (2) is for round, and windowpane (3) adopts pyroceram to make.
4. dustproof high sensitivity photosensors according to claim 1, it is characterized in that: according to the device sensitivity requirement, level crossing group (5) can be comprised of two plane mirrors, or is comprised of a plurality of plane mirrors.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2013104021977A CN103438914A (en) | 2013-09-06 | 2013-09-06 | Dustproof and high-sensitivity photoelectric sensor |
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| CN2013104021977A CN103438914A (en) | 2013-09-06 | 2013-09-06 | Dustproof and high-sensitivity photoelectric sensor |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112306099A (en) * | 2019-07-29 | 2021-02-02 | 陈向荣 | Intelligent solar automatic tracking system |
| CN113835310A (en) * | 2021-09-29 | 2021-12-24 | 深圳市先地图像科技有限公司 | Diaphragm and laser |
| CN113885111A (en) * | 2021-09-29 | 2022-01-04 | 深圳市先地图像科技有限公司 | Diaphragm and laser |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201187905Y (en) * | 2008-04-08 | 2009-01-28 | 成都钟顺科技发展有限公司 | Photo-electric type sun tracker |
| CN101539419A (en) * | 2009-04-29 | 2009-09-23 | 王小牛 | Solar energy tracking position sensor |
| CN101968656A (en) * | 2010-09-27 | 2011-02-09 | 杭州科汀光学技术有限公司 | Sun position tracking system sensor |
| CN202133912U (en) * | 2011-07-01 | 2012-02-01 | 梁璇 | A sensor for automatically tracking the position of the sun |
| CN103163903A (en) * | 2011-12-15 | 2013-06-19 | 飞秒光电科技(西安)有限公司 | Solar tracking sensor |
-
2013
- 2013-09-06 CN CN2013104021977A patent/CN103438914A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201187905Y (en) * | 2008-04-08 | 2009-01-28 | 成都钟顺科技发展有限公司 | Photo-electric type sun tracker |
| CN101539419A (en) * | 2009-04-29 | 2009-09-23 | 王小牛 | Solar energy tracking position sensor |
| CN101968656A (en) * | 2010-09-27 | 2011-02-09 | 杭州科汀光学技术有限公司 | Sun position tracking system sensor |
| CN202133912U (en) * | 2011-07-01 | 2012-02-01 | 梁璇 | A sensor for automatically tracking the position of the sun |
| CN103163903A (en) * | 2011-12-15 | 2013-06-19 | 飞秒光电科技(西安)有限公司 | Solar tracking sensor |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112306099A (en) * | 2019-07-29 | 2021-02-02 | 陈向荣 | Intelligent solar automatic tracking system |
| CN113835310A (en) * | 2021-09-29 | 2021-12-24 | 深圳市先地图像科技有限公司 | Diaphragm and laser |
| CN113885111A (en) * | 2021-09-29 | 2022-01-04 | 深圳市先地图像科技有限公司 | Diaphragm and laser |
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Application publication date: 20131211 |