Inductive loop pick ups are described for the detection of wheeled vehicle traffic flow along a road. Distances between 50 and 400 metres between loops are possible and the induction variation may lie between 60 and 1400 muH. A circuit is outlined where two loops are connected to a microprocessor interface with different frequency pulses from each loop detected according to a cyclic system regulated by a timing signal generator. Up to eight frequencies may be used, lying between 40 and 110 kHz. The output includes signals to energise light emitting diodes forming part of a display.
Traffic detector4, 182, 184ers. d. Orig.-Titels)
Verkehrsdetektoren
Polytechnisch Tijdschrift. Editie Elektrotechnick, Electronica ; 36 , 10 ; 504-506
1981
3 Seiten
Article (Journal)
Dutch
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