| 摘要 |
<p>The invention is a device for receiving warning and informative signals supplied by permanent magnet pieces for vehicles travelling along roadways. The device comprises a magnetic detector unit (1), a digital evaluation unit (2) and a display unit (3). The detector unit (1) is fastened to a part of the vehicle which is magnetically unshielded from below, and is connected to said evaluation unit (2) comprising decoding means (D1, D2, D3) and evaluating means adapted to identify the permanent magnets arranged in a predetermined pattern in the road surface, and to control said display unit (3) in case of identification.</p> |
