Image sensor terminal and building monitoring system
An image sensor terminal and a building management system, and belongs to the field of building intelligent management technologies. The image sensor terminal includes an image sensor and a lens element, and further includes: a photosensitive filter and light-transmitting layer disposed at a light incoming side of the lens element; and the image sensor terminal is further provided with a mounting portion for fixing the image sensor terminal into a building. A building management system uses a plurality of the image sensor terminals. Image information acquired by the image sensor terminal under strong light conditions is more accurate, and image information acquired under different ambient light density conditions is more consistent. The control of the building management system under different ambient light density conditions has better accuracy.
1. An image sensor terminal, comprising an image sensor and a lens element, and further comprising:
a photosensitive filter and light-transmitting layer disposed at a light incoming side of the lens element; and
the image sensor terminal being further provided with a mounting portion for fixing the image sensor terminal into a building;
wherein the photosensitive filter and light-transmitting layer is configured to pass a first light density in response to a first ambient light density and pass a second light density in response to a second ambient light density, the first ambient light density greater than the second ambient light density, a difference between the first ambient light density and the second ambient light density being greater then a difference between the first light density and the second light density;
wherein the image sensor terminal further comprises:
a light density sensing component disposed between the lens element and the photosensitive filter and light-transmitting layer; and
an auxiliary light source for enhancing ambient light of an environment where the image sensor terminal is located;
wherein the auxiliary light source is configured to be triggered and lit when light density received by the light density sensing component is lower than a predetermined value;
an analysis processor, which at least receives image information from the image sensor and analyzes the image information to output, from an output end thereof, statistical information data about human beings in the image information.
2. The image sensor terminal according to claim 1 , wherein the photosensitive filter and light-transmitting layer comprises a light-transmitting substrate and a photosensitive filter coating.
3. The image sensor terminal according to claim 2 , wherein the thickness of the photosensitive filter coating is 0.005 mm to 5 mm.
4. The image sensor terminal according to claim 1 , wherein the thickness of the photosensitive filter and light-transmitting layer is 0.1 mm to 8 mm.
5. The image sensor terminal according to claim 1 , wherein the mounting portion is provided with an interface port for connecting with extra-low voltage wiring in the building.
6. The image sensor terminal according to claim 1 , wherein the image sensor terminal further comprises: a Bluetooth module or a wifi module.
7. A building management system, provided with a plurality of the image sensor terminals according to claim 1 , the image sensor terminals being coupled to a control center of the building management system.