Multi-Directional Light Sensing Using A Rotating Sensor

Hoang Anh Dung, Nguyen Manh Cuong, Nguyen Phan Kien
2020 Advances in Science, Technology and Engineering Systems  
The performance of indoor illumination control in many applications, such as in an intelligent building, relies on the quality of the light sensors. In many cases, the light level is not uniform and depends on the direction of the illumination source. It usually requires multiple sensors set up in different directions to gather the overall light level. We propose a system that can provide multi-directional light sensing data by rotating a single sensor. This approach overcomes the problem of
more » ... tic sensors network by dynamically changing the measuring angular of the light sensor. We present a sensor system prototype using the ESP8266 controller board, BH1750 light sensor, stepper motor, and 3D printed rotation base mechanism. The system can calculate the sensing angle and transmit sensing data to the monitoring unit or Internet of Things platforms for visualization and analysis. The testing results in normal workrooms show that the rotating sensor can measure the light level in different directions and detect the direction of the main illumination source. Even blocking some directions, the sensor still is able to accurately measure and provide sensing information on the remaining directions. Our sensor system is useful in both whole lighting and local lighting control applications.
doi:10.25046/aj050626 fatcat:pcdoelhpzffcjc7z4n3abi64ky