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- Path: sparky!uunet!zaphod.mps.ohio-state.edu!swrinde!emory!sol.ctr.columbia.edu!destroyer!iunet!hal9k!delbert.big
- From: delbert.big@hal9k.ann-arbor.mi.us (Delbert Big)
- Newsgroups: rec.railroad
- Subject: Talking Detectors
- Message-ID: <637.134.uupcb@hal9k.ann-arbor.mi.us>
- Date: 20 Dec 92 11:01:00 GMT
- Distribution: world
- Organization: HAL 9000 BBS, (313)663-4173, Ann Arbor, MI, USA
- Reply-To: delbert.big@hal9k.ann-arbor.mi.us (Delbert Big)
- Lines: 11
-
- In a recent post from Jeff Hintzman;
- JH>How do the "smart" detectors count the number of axles that go by?
- JH>Photocells? Laser beam? Clink-clunk sound on rail joint? :-)
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- Axles are read by infrared detectors. These also provide the hot
- box information.
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