[Jiyi iCAN Competition] Lighting Quality Inspection

1. Function introduction

  Use a light source sensor to receive the light source, and then use a series of analyzes to detect its light intensity, power frequency, power frequency percentage, high frequency frequency, and high frequency percentage. It is displayed on the LCD screen and provides humanized brightness prompts and friendly prompts.

2. Principle introduction

What our team produces is a circuit board that extracts frequency signals. It uses linear regulators and LMV358 and other chips to filter and transmit a series of signal frequencies step by step to analyze and transmit them. A linear voltage regulator lamp is used to convert and transmit the voltage signal. Transmit the converted signal to the LMV358 chip for 16Hz low-pass filtering to extract the DC signal

Receive the low-pass filtered signal and extract the power frequency signal.

Amplitude detection of low frequency power frequency signals

Then, in the same way, the high-frequency signal is extracted, and after a series of processing, the amplitude of the high-frequency power frequency signal is detected, thereby obtaining the frequency amplitude of the light source, etc.