Ziyan LI, Ji GUO, Sitong DING, Weikuan GUO, Xiumin GAO. Design of water turbidity detection system based on STM32 optical transmission method[J]. Optical Instruments, 2020, 42(2): 80
- Optical Instruments
- Vol. 42, Issue 2, 80 (2020)
Fig. 1. System schematic block
Fig. 2. Hardware design of the system
Fig. 3. Driving circuit of the light source
Fig. 4. Photoelectric conversion circuit
Fig. 5. Preamplifier circuit
Fig. 6. Active second-order bandpass filter circuit
Fig. 7. Flow chart of main control program
Fig. 8. Light source driver
Fig. 9. Data acquisition and processing program
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Table 1.
Error analysis of water turbidity
水浊度误差分析表
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