CN209856727U - Ceiling type infrared induction head with ultra-large angle - Google Patents

Abstract

The utility model discloses a ceiling type infrared sensing head with an ultra-large angle, which comprises a mounting seat and a focusing shell, wherein a PIR infrared probe is arranged in the focusing shell, and a primary reflector is pasted in a convex surface of the focusing shell; a circle of secondary reflector is arranged on the periphery of the PIR infrared probe, and a plurality of focusing salient points are distributed on the inner wall of the focusing shell; the mounting seat is connected with the mounting plate through a connecting shaft, the connecting shaft comprises an outer sleeve shaft and an inner shaft, an electric telescopic rod is arranged in the inner shaft on the mounting plate, and the output end of the electric telescopic rod is welded and fixed with the mounting seat; this novel utilize on the primary reflector and secondary reflector carry out twice optical reflection with the infrared ray that PIR infrared probe sent, combine the focus of focusing bump on the focusing shell again, the outside infrared signal is collected in the focus, utilizes the technique of "directly penetrate + focus" and "secondary optical reflection + focus", has solved the little problem of single infrared probe transmission angle, and product cost is low, but wide application in places such as large-scale indoor venue, interior lower parking area.

Description

Ceiling type infrared induction head with ultra-large angle

Technical Field

The invention relates to the technical field of inductors, in particular to a ceiling type infrared induction head with an ultra-large angle.

Background

The infrared ray is called infrared ray in a section of the spectrum having a wavelength from 0.76 to 400 μm, and is invisible ray. All substances above absolute zero (-273.15 c) can produce infrared radiation, a modern physics called heat rays. The infrared inductor is developed based on the infrared reflection principle, and when the hand or body is in infrared region, the infrared ray from the infrared emitting tube is reflected to the infrared receiving tube via the hand or body shivering and the signal from the microcomputer in the integrated circuit sends command for switching control.

The response angle of present ceiling type infrared induction probe is only about 129 degrees, and ceiling mounting height is about 2.5 meters usually, then about its maximum induction radius is only 4 meters, when utilizing this infrared induction probe to survey, detection range is little, needs the common cooperation of a plurality of inductive probes just can realize the comprehensive survey in the region, and is inconvenient to use.

Disclosure of Invention

The invention aims to provide a ceiling type infrared sensing head with an ultra-large angle, so as to solve the problems in the background technology.

In order to achieve the purpose, the invention provides the following technical scheme: a ceiling type infrared sensing head with an ultra-large angle comprises a mounting seat and a focusing shell, wherein the focusing shell is of a hemispherical hollow structure, and the plane of the focusing shell is fixedly mounted on the mounting seat; a PIR infrared probe is installed in the focusing shell, a primary reflector is pasted in a convex surface, far away from the installation base, of the focusing shell, the primary reflector is of an arc curved surface structure arched towards the PIR infrared probe, and the arched surface of the primary reflector is a first reflection layer;

a circle of secondary reflector is arranged on the periphery of the PIR infrared probe, one surface of the secondary reflector, back to the mounting base, is of an inwards concave arc curved surface structure, the inwards concave surface of the secondary reflector is a second reflecting layer, and a plurality of focusing convex points are distributed on the inner wall of the focusing shell;

the one side that the focus casing was kept away from to the mount pad is passed through the connecting axle and is connected with the mounting panel, the mounting panel passes through fixing bolt and installs on inhaling a ceiling, the connecting axle includes outer sleeve and interior axle, outer sleeve welded fastening is on the mount pad, interior fixed welding is on the mounting panel, interior symmetrical spout that sets up respectively on the wall of both sides of axle, the one end that the mount pad was kept away from to outer sleeve is provided with and passes the spout perpendicularly and insert interior slider of axle, and the stopper is connected to the one end of slider in interior axle, installs electric telescopic handle in interior axle on the mounting panel, electric telescopic handle's output and mount pad welded fastening.

In a preferred embodiment of the present invention, the PIR infrared probe and the secondary reflector are fixed to the mounting base.

In a preferred embodiment of the present invention, the focus housing and the focus bump are made of PE material.

In a preferred embodiment of the present invention, the outer sleeve shaft and the inner shaft are both hollow tubular structures with openings at both ends.

As a preferable scheme of the invention, the mounting plate is provided with a control button and a power socket of the electric telescopic rod.

Compared with the prior art, the invention has the beneficial effects that:

1. the infrared radiation emitted by the PIR infrared probe is optically reflected twice by the first reflecting layer on the primary reflector and the second reflecting layer on the secondary reflector, then the external infrared signal is collected in a focusing way by combining the focusing of the focusing salient points on the focusing shell, and the problem of small emitting angle of a single infrared probe is solved by utilizing the technologies of direct projection plus focusing and secondary optical reflection plus focusing, so that the product cost is low, and the infrared radiation collecting device can be widely applied to large indoor venues, parking lots and other places.

2. According to the invention, the mounting base is fixed on the ceiling-mounted ceiling through the mounting plate by the aid of the connecting shaft with the telescopic structure, the connecting shaft is of a double-layer structure, the outer sleeve is sleeved on the inner shaft to slide, and the height of the PIR infrared probe on the ceiling-mounted ceiling can be conveniently adjusted by telescopic driving of the electric telescopic rod in the inner shaft, so that the ceiling-mounted infrared detector is high in flexibility and convenient to adapt to requirements of different heights.

Drawings

FIG. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is a schematic representation of the reflection of the primary and secondary reflectors of the present invention;

FIG. 3 is a schematic diagram of the sensing range of the present invention;

FIG. 4 is a schematic structural diagram of a connecting shaft according to the present invention;

fig. 5 is a schematic structural view of a sliding groove in the inner shaft according to the present invention.

In the figure: 1. a mounting seat; 2. a focus housing; 3. ceiling-mounted ceiling; 4. a PIR infrared probe; 5. a primary reflector; 6. a first reflective layer; 7. a secondary reflector; 8. a second reflective layer; 9. focusing the salient points; 10. a centerline; 11. the energy detection line reflected for the second time; 12. a connecting shaft; 13. mounting a plate; 14. fixing the bolt; 15. an outer sleeve shaft; 16. an inner shaft; 17. a chute; 18. a slider; 19. a limiting block; 20. an electric telescopic rod.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "vertical", "upper", "lower", "horizontal", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of describing the present invention and simplifying the description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention.

In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

Example 1: referring to fig. 1-5, the present invention provides a technical solution: a ceiling type infrared induction head with an ultra-large angle comprises a mounting seat 1 and a focusing shell 2, wherein the focusing shell 2 is of a hemispherical hollow structure, and the plane of the focusing shell is fixedly mounted on the mounting seat 1; a PIR infrared probe 4 is installed in the focusing shell 2, a primary reflector 5 is pasted in a convex surface of the focusing shell 2 far away from the installation base 1, the primary reflector 5 is of an arc curved surface structure which is arched towards the PIR infrared probe 4, and the arched surface of the primary reflector 5 is set as a first reflection layer 6;

a circle of secondary reflector 7 is arranged on the periphery of the PIR infrared probe 4, one surface of the secondary reflector 7, which is back to the mounting base 1, is of an inwards concave arc curved surface structure, the inwards concave surface of the secondary reflector 7 is provided with a second reflecting layer 8, and a plurality of focusing salient points 9 are fully distributed on the inner wall of the focusing shell 2;

the one side of the mounting base 1 far away from the focusing housing 2 is connected with a mounting plate 13 through a connecting shaft 12, the mounting plate 13 is mounted on a ceiling 3 through a fixing bolt 14, the connecting shaft 12 comprises an outer sleeve shaft 15 and an inner shaft 16, the outer sleeve shaft 15 is welded on the mounting base 1, the inner shaft 16 is fixedly welded on the mounting plate 13, two side walls of the inner shaft 16 are symmetrically provided with a sliding groove 17 respectively, one end of the outer sleeve shaft 15 far away from the mounting base 1 is provided with a sliding block 18 which vertically penetrates through the sliding groove 17 to be inserted into the inner shaft 16, one end of the sliding block 18 in the inner shaft 16 is connected with a limiting block 19, an electric telescopic rod 20 is mounted on the mounting plate 13 in the inner shaft 16, and the output end.

Further, a PIR infrared probe 4 and a secondary reflector 7 are fixed on the mounting base 1.

Further, the focusing housing 2 and the focusing bump 9 are made of PE material.

Further, the outer sleeve shaft 15 and the inner shaft 16 are both hollow tubular structures with two open ends.

Further, a control button and a power socket of the electric telescopic rod 20 are arranged on the mounting plate 13.

The working principle is as follows: a part of infrared rays emitted by the PIR infrared probe 4 penetrate out in a direct way in the form of a central line 10, a part of infrared rays are emitted out along the side surface of the focusing shell 2, a part of infrared rays firstly strike a first reflecting layer 6 of a primary reflector 5 to be reflected for the first time, infrared rays after the primary reflection strike a second reflecting layer 8 of a secondary reflector 7 to be reflected for the second time, the infrared rays after the secondary reflection are emitted out from the side surface of the focusing shell 2, and the included angle between the rays after the secondary reflection and the central line 10 is enlarged compared with the original rays at the moment, so that the detection range of the infrared rays is enlarged; the inner wall of the focusing shell 2 is fully distributed with a plurality of focusing salient points 9, and the focusing salient points 9 are used for collecting detected external infrared signals and providing signals of products 0 and 1 for judgment.

The electric telescopic rod 20 is connected with an external circuit through a power socket arranged on the mounting plate 13, the telescopic length of the electric telescopic rod 20 is controlled through a control button, so that the outer sleeve can slide on the inner shaft, the height of the PIR infrared probe on the ceiling 3 can be conveniently adjusted, the flexibility is high, and the electric telescopic rod is convenient to adapt to requirements of different heights.

Example 2: at present, the installation height of a common ceiling type infrared probe is about 2.5 meters, the ceiling installation height is 2.5 meters in the scheme, for example, as shown in fig. 3, the minimum induction distance radius of the product is 1-1.5 meters, and the maximum induction distance radius is about 10 meters, so that the induction range of the infrared induction probe is greatly enlarged.

The infrared radiation emitted by the PIR infrared probe is optically reflected twice by the first reflecting layer on the primary reflector and the second reflecting layer on the secondary reflector, then the external infrared signal is collected in a focusing way by combining the focusing of the focusing salient points on the focusing shell, and the problem of small emitting angle of a single infrared probe is solved by utilizing the technologies of direct projection plus focusing and secondary optical reflection plus focusing, so that the product cost is low, and the infrared radiation collecting device can be widely applied to large indoor venues, parking lots and other places.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims (5)

1. The ceiling type infrared sensing head with the ultra-large angle is characterized by comprising a mounting seat (1) and a focusing shell (2), wherein the focusing shell (2) is of a hemispherical hollow structure, and the plane of the focusing shell is fixedly mounted on the mounting seat (1); a PIR infrared probe (4) is installed in the focusing shell (2), a primary reflector (5) is pasted in a convex surface, far away from the mounting base (1), of the focusing shell (2), the primary reflector (5) is of an arc curved surface structure arched towards the PIR infrared probe (4), and an arched surface of the primary reflector (5) is set to be a first reflecting layer (6);

a circle of secondary reflector (7) is arranged on the periphery of the PIR infrared probe (4), one surface of the secondary reflector (7) back to the mounting base (1) is of an inwards concave arc curved surface structure, the inwards concave surface of the secondary reflector (7) is provided with a second reflecting layer (8), and a plurality of focusing convex points (9) are distributed on the inner wall of the focusing shell (2);

one surface of the mounting seat (1) far away from the focusing shell (2) is connected with a mounting plate (13) through a connecting shaft (12), the mounting plate (13) is mounted on the ceiling (3) through a fixing bolt (14), the connecting shaft (12) comprises an outer sleeve shaft (15) and an inner shaft (16), the outer sleeve shaft (15) is welded and fixed on the mounting seat (1), the inner shaft (16) is fixedly welded on the mounting plate (13), two sliding chutes (17) are respectively and symmetrically arranged on two side walls of the inner shaft (16), one end, far away from the mounting seat (1), of the outer sleeve shaft (15) is provided with a sliding block (18) which vertically penetrates through a sliding groove (17) and is inserted into the inner shaft (16), one end, in the inner shaft (16), of the sliding block (18) is connected with a limiting block (19), an electric telescopic rod (20) is mounted on the mounting plate (13) in the inner shaft (16), and the output end of the electric telescopic rod (20) is welded and fixed with the mounting seat (1).

2. The ultra-large angle ceiling type infrared sensor head as set forth in claim 1, wherein: the PIR infrared probe (4) and the secondary reflector (7) are fixed on the mounting base (1).

3. The ultra-large angle ceiling type infrared sensor head as set forth in claim 1, wherein: the focusing shell (2) and the focusing salient points (9) are both made of PE materials.

4. The ultra-large angle ceiling type infrared sensor head as set forth in claim 1, wherein: the outer sleeve shaft (15) and the inner shaft (16) are both hollow tubular structures with openings at two ends.

5. The ultra-large angle ceiling type infrared sensor head as set forth in claim 1, wherein: the mounting plate (13) is provided with a control button and a power socket of the electric telescopic rod (20).