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Water Turbidity Meter

Course: Embedded Systems and Software 55:032 Instructor: Dr. Anton Kruger. Water Turbidity Meter. Abhijeet Kher Aakant Taurani. Why is measuring water turbidity important?. Particles can be suspended in water Test for water quality Clear water is not always clean water

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Water Turbidity Meter

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  1. Course: Embedded Systems and Software 55:032 Instructor: Dr. Anton Kruger Water Turbidity Meter AbhijeetKher AakantTaurani

  2. Why is measuring water turbidity important? • Particles can be suspended in water • Test for water quality • Clear water is not always clean water • Drinking dirty water can cause many GI and other health problems • Especially a problem in developing nations

  3. Cost Our Project Source: http://www.nextag.com/turbidity-meter/shop-html ~$60!!!

  4. Components of Our Turbidity Meter Phototransistors Vial Slot LED LCD Microcontroller

  5. Circuit Schematic 470 Ohms LCD Transistor 1 100k Transistor 2 Voltage Ratio Vs NTU Rating 100k

  6. Voltage Ratio & NTU Correlation • Voltage Ratio • Using the polynomial equation in the graph, we can obtain the corresponding NTU rating • Higher the Voltage ratio, lower the NTU • Significant error +/- 5 NTU MS Excel plot of Voltage Ratio Vs. NTU Rating

  7. How it works:

  8. Possible Improvements • Building a more compact container • Fixing/mounting LED and Transistors firmly to prevent shock damage • Error correction to provide a more accurate reading of voltage ratio • Using a custom made circuit to cut down costs further • Increase accuracy by using more test samples

  9. Demo

  10. Questions?

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