| 摘要 |
PURPOSE:To count correctly the number of walks without diode by extracting the number of walks of a person having the walking meter as an electric signal containing noises from a walking sensor and converting and outputting it into one pulse signal through a hold circuit. CONSTITUTION:A walking sensor A has a weight 2 provided at an end of apendulum 1 with an end section rotatably and axially supported in a casing, a spring 3 usually exerted upward, and a switch 4 contacting with the weight lowered against an exerting force of the spring 3 during walking and convertinginto a digital signal. A hold circuit B comprises an integrating circuit 5 composed of a variable resistance VR setting anextracting period and a condenser C and a rectangular shape wave output circuit 6 of a transistor Tr and extracts an electric signal containing noises from a walking sensor A and converts into and outputs one pulse signal. A counter C inputs the electric signal from the walking sensor A through the hold circuit B and counts the number of walking and display it.
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