Radar human sensor helps road lights realize intelligent adjustment

The radar body sensor helps the road lights to realize intelligent adjustment. Green trees such as camphor trees and magnolias are planted on the urban tree-lined paths, which not only dress up the city, but also provide a good place for citizens to walk and exercise. However, these lush leaves block the street lights, greatly reducing the lighting efficiency of the street lights, and greatly reducing the lighting range, which brings safety risks to pedestrians, especially children, the elderly, the disabled and other special groups.

At present, the urban tree-lined street lights all use electric energy without intelligent control, and cannot be intelligently adjusted according to pedestrian conditions and leaf density, resulting in low energy utilization.

The radar body sensor is an electronic device that uses electromagnetic waves to detect targets. By emitting electromagnetic waves to illuminate the target and receiving echoes, it can obtain information such as the distance, distance change rate (radial velocity), azimuth, and angle from the target to the electromagnetic wave emission point. Using radar sensing technology, the street light is transformed from a solid mode to a smart mode.

The radar human body sensor can be linked with the street lights, and the lighting intensity can be automatically adjusted according to the pedestrian situation. The brightness is increased when there are people, and the brightness is reduced or even turned off when no one is there. The radar human body sensor is installed above the light pole. When people enter the street lighting area, the human body's induction signal is converted into an electrical signal through the radar sensor to control the power supply and power off of the relay. The lamps on the road are mainly composed of controllers, monitoring devices, radar body sensors, relay groups, OLED liquid crystal displays, and single-chip microcomputers.

Radar human sensors are widely used in lighting sensing, human presence sensing, motion detection and control and other fields. When someone enters the switch sensing range, the radar sensor detects the presence of a human body, and the switch automatically connects to the street light load. As long as people do not leave the sensing range, the switch will continue to connect; after leaving, the delay switch (adjustable time) automatically turns off the street light load.

The low-power induction radar body sensor can meet the ultra-low power consumption requirements of battery-powered and other application scenarios. In order to ensure that the lighting system can be intelligently adjusted according to the density of the blades, the radar sensor uses light-sensing modules and smart chips to determine the day or night. Density, intelligent realization of lighting.

The built-in analog-to-digital converter is used to sample pedestrians and light, and radar sensing technology automatically turns on the lights, enabling the lights to turn on when people come and turn off when people leave, which can achieve the effect of energy-saving intelligent lighting.