| 摘要 |
A high-frequency generating circuit is connected to six electrode fabrics 29a - 29f embedded in a seat back 27 of a passenger's seat 4. Current flow when a human body approaches the electrodes is detected. It is determined whether an occupant is an adult or a child, by comparing patterns of the output current which correspond to the electrodes with a first threshold value and a second threshold value to detect the positions of the head, neck and shoulder of the occupant. When the occupant is a child having a short sitting height, the operation of an air bag is prohibited upon collision, and a warning lamp is lit to advise the occupant to move to a rear seat. A further electrode 29g is provided to detect an occupant who is leaning to the side, deployment of a side airbag being prohibited in such a case. Various electrode constructions are also disclosed. |
