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This is an interesting IR interface module. This works on the principle of detecting the bounced light. The intensity of bounced light varies depending on the reflecting surface. The assumption is that emitted light follows the rectilinear propagation of light theory. This interface module has two sensors strategically placed to avoid collision with distance gauge. The distance measurement is by counting the number of reflected signals in comparison with the emitted count. Thus the distance can be gauged. While it is not possible to measure the actual distance, it can display the distance in 3 levels. Ie; far from the transmitter, near the transmitter or close to the transmitter by 3 different coloured LEDs. This can be approximated as the reflecting object to the left, center or right of the transmitter. The built in controller does the function of ranging, and indicating the approaching object. This is a good experimental tool to study the direction control of a simple ROBOT. |
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