Ael Microtel, Ltd.

Interprovincial Traffic Services Ltd.

Leonard Dueckman

Larry Y Onotera

A remote controlled object counter has a data counter which may e.g. be buried beneath a trail for counting the passage of people along the trail and a data collector separate from the data counter. The data counter employs an inductive loop with an oscillator and a processor for detecting the oscillator frequency and transmitting a corresponding data signal through radio transceivers in the data counter and the data collector for processing in the latter. To enable adjustment of the data counter sensitivity without physical contact, an adjustment signal generated in the data collector is sent through the transceivers to the data collector processor.

Radio controlled inductive loop counter for detecting human proximity

A 70.+-..DELTA.f MHz sinusoidal test signal from a standard radio link test set is down converted and shaped to obtain a 35.+-..DELTA.f/2 MHz sinusoidal test signal to be applied to the radio set under test. The output of the radio set is applied to an up converter in which a multiplier is used that maintains the amplitude information as it doubles the frequency. The 70.+-..DELTA.f MHz test signal from the up converter is then applied to the input of the radio link test set, and the characteristic is measured as if the radio set under test employed a 70 MHz IF, rather than a 35 MHz IF.

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Maple Ridge, Canada

Leonard Dueckman