Fig. 1. The architecture design of the whole system

Fig. 2. Intramolecular excitation and decay process

Fig. 3. Spectral distribution of excitation light sources corresponding to each channel

Fig. 4. Structure of light source system

Fig. 5. PWM dimming circuit design of the system

Fig. 6. System communication structure

Fig. 7. Logic analysis diagram of light source driving circuit

Fig. 8. Imaging of fluorescence detection results of each channel

Fig. 9. Detection of fluorescence excitation