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| Re: Track Detectors (872460) | |||
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Re: Track Detectors |
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Posted by Stephen Bauman on Mon Dec 14 17:45:24 2009, in response to Re: Track Detectors, posted by Broadway Lion on Mon Dec 14 12:08:20 2009. this layout is EIGHT scale MILES...I can probably arrange them at an angle to each other across the track on a diagonal so that they will not be fooled by the gap between the cars.Let me try to scope the problem out a bit. (caveat I'm not into model trains). You need to cover every millimeter of your 8 mile layout with track detectors. How they are tied together determines the number of blocks and signals. You have 8 miles. Let's assume that a detector can determine the presence of a single car. You are rightly worried about the gap. Add more detectors and overlap them vis-a-vis car length. That way at least one of the sensors will detect a car within the block. Assume you are using 2 sensors per car length to accomplish this. You've got 8 miles or 42,240 feet. That's 704 car lengths, assuming 60 foot cars. That's the seat of the pants estimate of scope. If you are considering the opto route for sensors, start calculating supply voltage current. 700+ IC's is a hefty load. The magnetic reed switch should be less power hungry. |
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