| 摘要 |
<p>The immobiliser (2) responds to signals from a touch sensor (8) on the handlebar grip (9), and a change-of-attitude detector, by emitting, after an e.g. 2 second delay, an audible alarm. The helmet (11) belonging to the authorised rider is equipped with a control module (12) incorporating a high-frequency emitter/receiver (13), communicating with a similar unit in the machine. When the helmet is put on and the handlebar gripped, electronic detection of the wearer's head, or a chin-strap switch, initiates the authorisation process (14). Opt., in case the helmet itself is stolen, the process also requires entry of a conforming code on a helmet key-pad (16). When the machine is laid aside after use, the immobiliser self-resets after a brief time delay.</p> |
