Illumination sensor

Abstract

The invention discloses an illumination sensor, which comprises a shell and a lens and a photoreceptor array installed in the shell, and the photoreceptor array is located on the focal plane of the lens. Sunlight penetrates through a lens and is focused on the photoreceptor array; because the photoreceptor array is divided into a plurality of areas, the focusing position of the photoreceptor arrayis changed along with the change of rising and falling of the sun under the condition that the installation position of the illumination sensor is not changed, and the relative height and 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; due to the fact that sunlight penetrates through the lensto be focused on the photoreceptor array, the light intensity of the focused position is very high, the relative ratio of the light intensity of other positions is very low, the air scattering degreecan be calculated through a peak-to-peak value based on the ratio of the intensity values on the photoreceptor array, and then the sunny day, the cloudy day and the air relative permeability are determined.

Description

technical field [0001] The invention belongs to the technical field of illumination, and relates to an illumination sensor, in particular to an illumination sensor capable of measuring the relative height of the sun and the degree of air scattering. Background technique [0002] With the development of urban construction, road lighting covers most of the roads in cities and towns. Due to the huge number, even if many places have changed to energy-saving LED street lights, they are still the object of energy consumption; in order to save energy, managers can The street lamps are installed with timers and ambient light detection methods to switch or adjust the brightness of the street lamps. [0003] At the same time, in the Internet of Things industries such as smart home and smart lighting, there are only simple brightness sensors. Due to the reflectivity and scattering of light, it is difficult to accurately control lamps, curtains, windows, etc. through simple brightness s...

AI Technical Summary

Problems solved by technology

[0003] At the same time, in the Internet of Things industries such as smart home and smart lighting, there are only simple brightness sensors. Due to the reflectivity and scattering of light, it is difficult to accurately control lamps, curtains, windows, etc. through simple brightness sensing; now Some sensors cannot measure the relative height of the sun, cloudy and sunny air scattering, etc.

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