| 摘要 |
A control system for a safety device such as an air-bag unit 11 in a motor vehicle has three sensors. First and third sensors 21, 22 are sensitive to acceleration having a principal component perpendicular to the longitudinal axis of the vehicle, and are associated with evaluation means 23, 24, 25 adapted to close a first switch 3. The second sensor 4 senses acceleration along the longitudinal axis of the vehicle and is associated with evaluating means 5, 6 which generate a signal to close a second switch 7. When both switches are closed a current is supplied to the unit 11 to deploy the air-bag. Sensors 21, 22 are located at the sides of the vehicle and indicate the risk of a frontal impact. |
