| 摘要 |
<p>A wheel speed sensor (10) comprises a Hall device (18) disposed in a pocket (16) in a cavity (14) of a plastic housing (12). The cavity (14) is filled with potting compound (28) to capture and enclose the Hall device (18). Flux issued from a magnet that rotates with the wheel acts upon the Hall device (18) and is concentrated on the Hall device (18) by ferromagnetic fragments (30) interspersed throughout the potting compound (28).</p> |
