CN211373828U - Illuminance sensor - Google Patents

Abstract

The utility model discloses an illumination sensor, include: a housing; a lens and a photoreceptor array are mounted in the housing, the photoreceptor array being located at the focal plane of the lens. The sunlight of the utility model is focused on the photoreceptor array through the lens; because the photoreceptor array is divided into a plurality of areas, under the condition that the installation position of the illumination sensor is not changed, the focusing position of the photoreceptor array is changed along with the rising and falling of the sun, and the relative height and the incident angle of the sun at the moment can be calculated according to the focal length of the lens and the size of the plane of the photoreceptor array; because sunlight penetrates through the lens to be focused on the photoreceptor array, the light intensity of the focused position is high, the relative ratio of the light intensities of other positions is low, the scattering degree of air can be calculated through the peak value based on the ratio of the intensity values on the photoreceptor array, and then the sunny day, the cloudy day and the relative transmittance of the air are judged.

Description

Illuminance sensor

Technical Field

The utility model belongs to the technical field of the illumination, a light intensity sensor is related to, concretely relates to light intensity sensor of measurable quantity sun relative altitude and air scattering degree.

Background

With the development of urban construction, road illumination covers most roads of cities and towns, and due to the huge number, even if a plurality of places are changed into energy-saving LED street lamps, the LED street lamps still are energy consumption objects; in order to save more energy, the manager can switch on or off the street lamp or adjust the brightness of the street lamp in a way of installing a timer on the street lamp and detecting ambient light.

Meanwhile, in the industries of Internet of things such as smart home, smart lighting and the like, only a simple brightness sensor is provided at present, and due to the reflectivity and scattering of light, the precise control of lamps, curtains, windows and the like is difficult to realize through simple brightness induction; the existing sensor cannot measure the relative height of the sun, the air scattering degree in cloudy days and sunny days, and the like.

SUMMERY OF THE UTILITY MODEL

To the weak point that exists in the above-mentioned problem, the utility model provides a but measurement of solar relative height and air scattering degree's illuminance sensor.

The utility model discloses an illumination sensor, include: a housing;

and a lens and a photoreceptor array are arranged in the shell, and the photoreceptor array is positioned on a focal plane of the lens.

As a further improvement, the housing is open-topped, all around and bottom confined structure, lens are installed light entrance department in the top of housing, the photoreceptor array is installed in the housing.

As a further improvement of the present invention, the present invention further comprises: an aperture;

the aperture is an adjustable aperture;

the adjustable aperture is located between the lens and the photoreceptor array.

As a further improvement of the present invention, the present invention further comprises: a light-reducing lens;

the light reduction optic is positioned between the lens and the photoreceptor array.

As a further improvement of the utility model, the light-reducing lens comprises a light-transmitting material, and a light-reducing film or a reflection increasing film is plated on the light-transmitting material;

and carrying out multi-stage switching on the light-transmitting materials with different light transmittances through a moving mechanism.

As a further improvement of the present invention, the illuminance sensor is mounted on an outer wall or a window.

Compared with the prior art, the beneficial effects of the utility model are that:

the utility model has the advantages that the light sensor array is positioned on the focal plane of the lens, and the sunlight is focused on the light sensor array through the lens; because the photoreceptor array is divided into a plurality of areas, under the condition that the installation position of the illumination sensor is not changed, the focusing position of the photoreceptor array is changed along with the rising and falling of the sun, and the relative height and the incident angle of the sun at the moment can be calculated according to the focal length of the lens and the size of the plane of the photoreceptor array;

the utility model discloses because sunlight sees through lens and focuses on the photoreceptor array, the position luminous intensity of focus is very high then, and the luminous intensity relative ratio of other positions is very low, can calculate the dispersion degree of air through the peak value based on the proportion of the last intensity value of photoreceptor array, and then judges sunny day, cloudy day and air relative transparency degree;

the utility model discloses can set up between lens and photoreceptor array and be used for reducing light and can remove and the light ring or the light reduction lens that switch for avoid when light is very strong the sunlight to see through the focus of lens and lead to the damage of photoreceptor array.

Drawings

Fig. 1 is a schematic structural diagram of an illumination sensor according to an embodiment of the present invention;

FIG. 2 is a schematic view of the photoreceptor array of FIG. 1;

fig. 3 is an irradiation view of the sun after passing through a curtain or a window according to an embodiment of the present invention.

In the figure:

1. a housing; 2. a lens; 3. an aperture; 4. an array of photoreceptors; 5. the sun.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; 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 meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

The invention is described in further detail below with reference to the accompanying drawings:

as shown in fig. 1 and 2, the present invention provides an illuminance sensor, which can measure the relative height of the sun, the sunny day, the cloudy day, the air scattering degree, etc. after being installed on an outer wall, a window, etc.; the illuminance sensor includes: a shell 1, a lens 2, an aperture 3 or a dimming lens, and a photoreceptor array 4; wherein:

the utility model discloses a lens 2 and a photoreceptor array 4 are installed in the shell 1, and the photoreceptor array 4 is positioned on the focal plane of the lens 2; specifically, the shell 1 is of a structure with an opening at the top and closed periphery and bottom, the lens 2 is arranged at the light inlet at the top of the shell 1, and the photoreceptor array 4 is arranged in the shell 1; further, the photosensor array 4 may be composed of a plurality of independent photosensitive sensors or a plurality of sensors packaged in a package.

The aperture 3 or the light reduction lens of the utility model is positioned between the lens 2 and the photoreceptor array 4, wherein, the aperture 3 is an adjustable aperture, the light reduction lens comprises a light transmission material, and the light transmission material is plated with a light reduction film or a reflection increasing film; when the light-transmitting device is used, the light-transmitting materials with different light transmittances are switched in multiple stages through the moving mechanism according to the intensity of light.

As shown in fig. 1-3, the working principle of the present invention is:

the utility model has the advantages that the light sensor array is positioned on the focal plane of the lens, the sunlight is focused on the light sensor array through the lens, and the brightness of the focal point is higher than that of other areas; because the photoreceptor array is divided into a plurality of areas, under the condition that the installation position of the illumination sensor is not changed, the focusing position of the photoreceptor array is changed along with the rising and falling of the sun, and the relative height and the incident angle of the sun at the moment can be calculated according to the focal length of the lens and the size of the plane of the photoreceptor array;

the utility model discloses because sunlight sees through lens and focuses on the photoreceptor array, the position luminous intensity of focus is very high then, and the luminous intensity relative ratio of other positions is very low, can calculate the dispersion degree of air through the peak value based on the proportion of the last intensity value of photoreceptor array, and then judges sunny day, cloudy day and air relative transparency degree;

the utility model discloses can set up between lens and photoreceptor array and be used for reducing light and can remove and the light ring or the light reduction lens that switch for avoid when light is very strong the sunlight to see through the focus of lens and lead to the damage of photoreceptor array.

The above is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes will occur to those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (6)

1. An illuminance sensor, comprising: a housing;

and a lens and a photoreceptor array are arranged in the shell, and the photoreceptor array is positioned on a focal plane of the lens.

2. The illuminance sensor according to claim 1, wherein said housing is open-topped, closed-topped, and closed-topped, said lens is mounted at a top light entrance of said housing, and said photoreceptor array is mounted within said housing.

3. An illuminance sensor as recited in claim 1, further comprising: an aperture;

the aperture is an adjustable aperture;

the adjustable aperture is located between the lens and the photoreceptor array.

4. An illuminance sensor as recited in claim 1, further comprising: a light-reducing lens;

the light reduction optic is positioned between the lens and the photoreceptor array.

5. The illuminance sensor according to claim 4, wherein said light-reducing lens comprises a light-transmitting material, said light-transmitting material being coated with a light-reducing film or an anti-reflection film;

and carrying out multi-stage switching on the light-transmitting materials with different light transmittances through a moving mechanism.

6. An illuminance sensor according to claim 1, wherein said illuminance sensor is mounted on an exterior wall or window.

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