| 摘要 |
<p>PURPOSE:To provide an electronic bumper for an automobile whereby an obstacle can be detected in a wide range without causing misoperation by providing a plurally detecting high frequency proximity switch in the bumper. CONSTITUTION:A plurality of detecting parts 4 constituted of detecting plate capacity and a reference resonance circuit 5 constituted of reference capacity to change over a switch are connected to a single oscillator 6 through the switch, and by changing over the switch, each detecting part 4 and the reference resonance circuit 5 are successively oscillated. An output corresponding to each detecting part 4 and the reference resonance circuit 5 is obtained by a discriminating means synchronized with the above-mentioned switch, or each detecting part 4 and the reference resonance circuit 5, individually having the oscillator 6, are connected to a power supply through the switch and successively oscillated by changing over the switch to obtain respective outputs with no interference with each other, and based on an output by the reference resonance circuit 5, the above-mentioned end is attained by an automobile electronic bumper for correcting a change of an output level.</p> |
