A SHORT BACKGROUND
I have a project for detecting insects (Tephritidae fly). Winged insects have pairs of wings in their back which each of them has a different shape and width. Many journals use laser (or infrared transmitters) and light sensors as the receiver for detecting it. How does it work? We'll wait for insects to pass the laser and sensor, then we'll get a value named wingbeat frequency.
My problem is, the LDR module sensor we used (LM393) performances aren't at their peak. The sensors can't detect flickering light (laser module) that has more than 100Hz frequency after calibration (according to the journal the wingbeat frequency is about 197-203Hz). So is there a recommendation for the kind of sensors we could use? Are there new ways to measure flickering light using any kind of sensor? Sorry for bad grammar.