| 摘要 |
Electronic alarm device for two-wheeled vehicles. The invention relates to an electronic alarm device which is triggered by a blow or by a very low mechanical frequency, and which is managed by an electronic key (its sensitivity is constant whatever the slope). It consists of a piezoelectric sensor, closely linked to a metal mass, which, given a blow, starts to oscillate and to produce an electrical signal. This signal is then managed by an electronic key, based on the principle of balancing Wheatstone bridges. Moreover, the male part of the key consists of a 3-conductor jack. Moreover, the number of possible combinations is 25000, and the alarm detects false keys, thereby triggering itself. This device according to the invention is particularly intended for motorcycles and two-wheeled vehicles. <IMAGE> |
