Researching | Design of water turbidity detection system based on STM32 optical transmission method

Optical Instruments, Volume. 42, Issue 2, 80(2020)

Design of water turbidity detection system based on STM32 optical transmission method

Ziyan LI... Ji GUO, Sitong DING, Weikuan GUO and Xiumin GAO |Show fewer author(s)

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School of Optical-Electrical and Computer Engineering, University of Shanghai for Science and Technology, Shanghai 200093, China

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Figures & Tables(10)

Fig. 1. System schematic block

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Fig. 2. Hardware design of the system

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Fig. 3. Driving circuit of the light source

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Fig. 4. Photoelectric conversion circuit

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Fig. 5. Preamplifier circuit

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Fig. 6. Active second-order bandpass filter circuit

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Fig. 7. Flow chart of main control program

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Fig. 8. Light source driver

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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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Table 1.
Error analysis of water turbidity
水浊度误差分析表
标准液/FNU 电压值/mV 测量值/FNU 误差值/%
0 0.377 9 1.042 1
1 0.377 7 1.040 8 4
5 0.377 0 4.832 0 3.3
10 0.376 0 10.103 8 1

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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

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Paper Information

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Received: Aug. 14, 2019

Accepted: --

Published Online: May. 27, 2020

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DOI:10.3969/j.issn.1005-5630.2020.02.014

Topics

laser devices and laser physics

Lasers and Laser Optics

laser manufacturing

Instrumentation, Measurement and Metrology