CN101979970A - Method and device for limiting detection range of infrared sensor - Google Patents
Method and device for limiting detection range of infrared sensor Download PDFInfo
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- CN101979970A CN101979970A CN 201010516259 CN201010516259A CN101979970A CN 101979970 A CN101979970 A CN 101979970A CN 201010516259 CN201010516259 CN 201010516259 CN 201010516259 A CN201010516259 A CN 201010516259A CN 101979970 A CN101979970 A CN 101979970A
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Abstract
The invention discloses a method and a device for limiting a detection range of an infrared sensor and belongs to the technical field of infrared sensing. The technical key point is that: in the method, a shading cover of which the inner wall is provided with an infrared ray penetration blocking layer is arranged at the bottom of a Fresnel lens on the periphery of the infrared sensor; and the shading cover makes the detection range of the infrared sensor controlled in a circle with the diameter of 3-4m at a position 2.5m below the shading cover. The device comprises the infrared sensor; and the Fresnel lens is arranged on the periphery of the infrared sensor, wherein the shading cover is arranged at the bottom of the Fresnel lens; the inner layer of the shading cover is provided with the infrared ray penetration blocking layer; the shading cover has a circular tube shape; and a lower end part of the shading cover is corrugated. The invention aims to provide a method and a device for limiting the detection range of the infrared sensor, wherein the device has a simple structure, the detection range of the infrared sensor can be reduced and can be effectively controlled, and the device and the method are used for indoor illumination control.
Description
Technical field
The present invention relates to a kind of infra-red detection technology, more particularly, relate in particular to a kind of method that limits the infrared sensor investigative range; The invention still further relates to the device of this method of realization.
Background technology
At present, illumination control infrared sensor detection principle is that the infrared signature according to human body discharges after the infrared eye reception, disconnects normally closed terminal in the sensor, utilizes to open and close signal like this, can realize various functions.Be used in the illumination control field, modal function realizes people Lai Dengliang exactly, the effect that turns off the light when you leave.Because the infrared sensor investigative range has fixing interval value, when infrared sensor is installed in the smallpox height is 2.5 meters position, its investigative range is in the circle of 6 meters to 9 meters of diameters, this investigative range has exceeded the requirement in office field, open-plan requires 1 infrared sensor can only detect 4 desks mostly, that is to say that when infrared sensor is installed in the smallpox height be 2.5 meters position, requiring investigative range is in 3.5 meters the circle.
Summary of the invention
The object of the present invention is to provide a kind of simple in structure, investigative range that can reduce infrared sensor, more help the effectively method of the qualification infrared sensor investigative range of control; Another object of the present invention provides a kind of device of realizing said method.
Last purpose of the present invention is achieved in that a kind of method that limits the infrared sensor investigative range, wherein, this method is in the Fresnel Lenses of infrared sensor periphery bottom an inwall to be set the cover that blocks that stops the infrared penetration layer is arranged, and this blocks cover the investigative range of infrared sensor 2.5 meters distances under it is controlled in the circle that diameter is 3～4m.
Another object of the present invention is achieved in that a kind of device that limits the infrared sensor investigative range, comprise infrared sensor, be provided with Fresnel Lenses in the infrared sensor periphery, wherein, described Fresnel Lenses bottom is provided with blocks cover, the inwall that blocks cover is provided with the internal layer that stops the infrared penetration layer, blocks cover and is the pipe shape, and the bottom of blocking cover is that water is corrugated.
In the device of above-mentioned qualification infrared sensor investigative range, the described internal layer that blocks cover is electroplated metal layer or spary metal powder enamelled coating.
In the device of above-mentioned qualification infrared sensor investigative range, the described smooth end of cover upper end that block for being connected with Fresnel Lenses, the diameter that blocks cover is 35mm, blocking the cover wall thickness is 2mm, the peak height that blocks cover ripples line end, lower end is 22mm, and the height of minimum point is 12mm.
The present invention adopts in the said method, when infrared sensor is installed in apart from the height on ground when going up for blooming of 2.5m, its investigative range can be controlled in the circle that diameter is 3～4m, promptly be in opening wide office 4 desks with interior scope, make room lighting can not cause the waste of the energy owing to investigative range excessive causes too much lighting of indoor illumination light fitting.
After the present invention adopts said structure, by blocking cover peripheral setting of Fresnel Lenses, and can prevent the ultrared metal level that penetrates in cover inwall setting, the investigative range that makes infrared sensor is that the circle of 6～9m is contracted in the circle of 3～4m by original diameter, has dwindled the scope that induction is surveyed greatly.
Description of drawings
The present invention is described in further detail below in conjunction with the embodiment in the accompanying drawing, but do not constitute any limitation of the invention.
Fig. 1 is a structural representation of the present invention.
Fig. 2 is the side view of Fig. 1.
Fig. 3 is the upward view of Fig. 1.
Fig. 4 is the user mode synoptic diagram of a kind of specific embodiment of the present invention.
Fig. 5 is the user mode synoptic diagram of the another kind of specific embodiment of the present invention.
Among the figure: infrared sensor 1, Fresnel Lenses 2, block the cover 3, internal layer 4.
Embodiment
A kind of method that limits the infrared sensor investigative range, this method is in the Fresnel Lenses of infrared sensor periphery bottom an inwall to be set the cover that blocks that stops the infrared penetration layer is arranged, and this blocks cover the investigative range of infrared sensor 2.5 meters distances under it is controlled in the circle that diameter is 3～4m.
Consult Fig. 1 to shown in Figure 3, a kind of device that limits the infrared sensor investigative range of the present invention, comprise infrared sensor 1, be provided with Fresnel Lenses 2 in infrared sensor 1 periphery, Fresnel Lenses 2 bottoms are provided with blocks cover 3, the inwall that blocks cover 3 is provided with the internal layer 4 that stops the infrared penetration layer, internal layer 4 is electroplated metal layer or spary metal powder enamelled coating, block cover 3 and be the pipe shape, the bottom of blocking cover 3 is that water is corrugated, blocks the smooth end of cover 3 upper ends for being connected with Fresnel Lenses 2, the diameter that blocks cover 3 is 35mm, blocking cover 3 wall thickness is 2mm, and the peak height α that blocks cover ripples line end, 3 lower end is 22mm, and the height β of minimum point is 12mm.
Consult shown in Figure 4, it is 2.5 meters position that an infrared sensor 1 is installed in the smallpox height, by blocking blocking of cover 3, its investigative range is for being that the diameter at center is in 3.5 meters the circle with infrared sensor 1, this scope is that 4 desks can start lighting with interior scope by this corresponding infrared sensor 1 when human body is in the scope of this circle in opening wide office substantially.
Consult shown in Figure 5, it is 2.2 meters position that an infrared sensor 1 is installed in the smallpox height, by blocking blocking of cover 3, its investigative range is for being that the diameter at center is in 3.2 meters the circle with infrared sensor 1, this scope is that 4 desks can start lighting with interior scope by this corresponding infrared sensor 1 when human body is in the scope of this circle in opening wide office substantially.
Claims (4)
1. method that limits the infrared sensor investigative range, it is characterized in that, this method is in the Fresnel Lenses of infrared sensor periphery bottom an inwall to be set the cover that blocks that stops the infrared penetration layer is arranged, and this blocks cover the investigative range of infrared sensor 2.5 meters distances under it is controlled in the circle that diameter is 3～4m.
2. device of realizing the method for the described qualification infrared sensor of claim 1 investigative range, comprise infrared sensor (1), be provided with Fresnel Lenses (2) in infrared sensor (1) periphery, it is characterized in that, described Fresnel Lenses (2) bottom is provided with blocks cover (3), the inwall that blocks cover (3) is provided with the internal layer (4) that stops the infrared penetration layer, and blocking cover (3) is the pipe shape, and the bottom of blocking cover (3) is that water is corrugated.
3. device according to claim 2 is characterized in that, the described internal layer (4) that blocks cover (3) is electroplated metal layer or spary metal powder enamelled coating.
4. according to claim 2 or 3 arbitrary described devices, it is characterized in that, the described smooth end of cover (3) upper end that block for being connected with Fresnel Lenses (2), the diameter that blocks cover (3) is 35mm, blocking cover (3) wall thickness is 2mm, the peak height that blocks ripples line end, cover (3) lower end is 22mm, and the height of minimum point is 12mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010516259 CN101979970A (en) | 2010-10-22 | 2010-10-22 | Method and device for limiting detection range of infrared sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010516259 CN101979970A (en) | 2010-10-22 | 2010-10-22 | Method and device for limiting detection range of infrared sensor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101979970A true CN101979970A (en) | 2011-02-23 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201010516259 Pending CN101979970A (en) | 2010-10-22 | 2010-10-22 | Method and device for limiting detection range of infrared sensor |
Country Status (1)
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| CN (1) | CN101979970A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104809957A (en) * | 2015-04-27 | 2015-07-29 | 北海和思科技有限公司 | Advertising machine |
| CN105844828A (en) * | 2015-02-04 | 2016-08-10 | 霍尼韦尔国际公司 | Smart lookdown function switch design for intrusion detectors |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002082178A (en) * | 2000-09-06 | 2002-03-22 | Horiba Ltd | Human body detector |
| CN201422105Y (en) * | 2009-02-17 | 2010-03-10 | 杨群学 | Pyroelectric infrared shading device |
| CN201421025Y (en) * | 2009-05-23 | 2010-03-10 | 杨群学 | Light shading and guiding device of light manager |
-
2010
- 2010-10-22 CN CN 201010516259 patent/CN101979970A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002082178A (en) * | 2000-09-06 | 2002-03-22 | Horiba Ltd | Human body detector |
| CN201422105Y (en) * | 2009-02-17 | 2010-03-10 | 杨群学 | Pyroelectric infrared shading device |
| CN201421025Y (en) * | 2009-05-23 | 2010-03-10 | 杨群学 | Light shading and guiding device of light manager |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105844828A (en) * | 2015-02-04 | 2016-08-10 | 霍尼韦尔国际公司 | Smart lookdown function switch design for intrusion detectors |
| CN104809957A (en) * | 2015-04-27 | 2015-07-29 | 北海和思科技有限公司 | Advertising machine |
| CN104809957B (en) * | 2015-04-27 | 2018-01-19 | 江苏智慧优视电子科技有限公司 | A kind of advertisement machine |
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Application publication date: 20110223 |