| 摘要 |
<p>A golf-cart speedometer/odometer has a rotation-mark collar (1) on a cart-wheel rim (2) that signals rotation to a rotation sensor (4) on a housing extension (5) from a cart-axle housing (6). Measurement of rotation is communicated electrically from the rotation sensor to a readout console (8) having a speedometer (10), a resettable long-distance odometer (11) in metric or English and a resettable short-distance odometer (12) in metric or English readout. Rotation-marking is preferably with a plurality of four collar magnets (3) separated ninety degrees apart for a rotation sensor having a Hall-effect communication of passage of the four collar magnets. Optionally, the rotation-marking of the rotation-mark collar can utilize a plurality of four magnetic-material markers of a rotation-sensor magnet to decrease magnetic field that could damage computers or medical equipment in the vicinity. Further optional, the ratio-marking of the rotation-mark collar can utilize four mechanical trippers (31) and trippets (32).</p> |
