[Jiyi iCAN Competition] Lighting Quality Inspection

The question requires designing a circuit that can determine the quality of light.

Won first prize in the school competition.

Team members Xin Jianfeng, Ma Mengyuan, and Liu Haoting. Instructor: Qi Qiuju

Introduction to the engineering principle: First, silicon photovoltaic cells are used to collect optical signals and then converted into electrical signals to output current, and then the I/U converter is used to convert the current into voltage. The second step will be divided into three branches. The first is to extract the DC signal. The intensity of the DC signal is considered to be the light intensity. Then extract the power frequency signal, and design a frequency and amplitude identification circuit to identify the frequency and amplitude. The power frequency signal is a 220V power supply signal with a frequency of 50HZ. Then extract the high-frequency signal and identify the frequency amplitude of the high-frequency signal. Finally, the extracted signal is transmitted to the microcontroller for processing.

2. Function: (1) Reduce the harm of light to vision (2) Detect the quality of light.

3. Test parameters: DC signal, power frequency signal frequency and amplitude, high frequency signal frequency and amplitude

4. Test results: The strobe and light intensity of the light can be detected through the board.