Hot Wire Anemometry

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Hot Wire Anemometry
Objective

• Create an anemometer that is capable of
  determining the direction of the wind

By Advanced Mechatronics Project Numpon
Mahayotsanun James Washington
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Cad Drawing
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Hot Wire Anemometer Image
Front view of the hot wire anemometry
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Hot Wire Anemometer Image
Top view of the hot wire anemometry
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Circuit Diagram
Heat source
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Circuit Diagram
A pair of diodes and an instrumentation amplifier
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Circuit Diagram
8 Diodes and 8 Instrumentation Amplifiers
Schematic
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How Diodes Behave as a Temperature Sensor
Figure 3 Diode Plate Characteristic
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Current Issue

• Difficulty in control RC servo motor
• Using 555 timer and a comparator to obtain square
  pulses at 20 ms refresh rate
• When changing the width of the pulses, the motor
  did not rotate correspondingly
• Motor kept moving until it hit the stop every
  time it received the pulses

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Next Task

• Control RC servo motor
• Servo motor circuit
• Program to control motor