[Jilin ican competition] Lighting quality detector

Engineering principles:

The main principle is to extract the DC signal, power frequency signal and high frequency signal respectively after I/U conversion. The power frequency signal and high frequency signal use frequency identification circuit and radiation detection circuit, and then display the DC and power frequency signals respectively on the oscilloscope. The extracted waveforms of frequency signals and high-frequency signals are used to detect lighting quality problems.

effect:

Reduce the harm of light to vision, provide light intensity prompts, and provide brightness prompts

Working conditions:

You must have a light source when working. Only when there is a light source can you test. Then use an oscilloscope to adjust the voltage and time and observe the waveform.

Test parameters:

DC signal, power frequency signal frequency and amplitude, high frequency signal frequency and amplitude