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The phase difference seen by the sensors would be tiny at any practical frequency. Assume that you have the sensors a distance, D, apart and facing 'forward' on the robot. If there is a transmitting source at 90 degrees to the forward direction, the (...) (27 years ago, 8-Dec-97, to lugnet.robotics.handyboard)
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| | Re: tracking an IR beacon
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(...) I confirm what David is saying! Once i worked on some kind of beacon using an PLL to find its frequency (we used a lm567) and it couldn't work properly due to the response time of the PLL. An alternate solution was to replace the PLL by a (...) (27 years ago, 7-Dec-97, to lugnet.robotics.handyboard)
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| | Re: tracking an IR beacon
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(...) Hmmm...mmm... welllll.. if you are planning to use the GPUI series or equiv. as your detectors.. I think you may run into problems with attempting to detect critical time information about the modulated waverform. Namely, and I'm no expert on (...) (27 years ago, 7-Dec-97, to lugnet.robotics.handyboard)
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| | IR Disturbance?
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Hi, I'm trying to do the Trinity College contest for my science project. I'm using IR reflectance sensors to navigate the walls. But when I tried with the candle the robot went haywire. I think it's due to the IR eminating from the candle. How can I (...) (27 years ago, 6-Dec-97, to lugnet.robotics.handyboard)
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| | Re: tracking an IR beacon
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I'm no electronic wizard which I think you probably would have to be to even consider what you are suggesting. Wouldn't it be simpler to just shield your sensors so that they 'look' in different directions? Have one look a little bit left and the (...) (27 years ago, 6-Dec-97, to lugnet.robotics.handyboard)
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