| 摘要 |
An accelerometer is used to detect deceleration of a moving vehicle. The output from a brake light is varied in proportion to the forces detected by the accelerometer. The brake light can be an integral part of the vehicle or a self-contained unit, e.g. affixed to the rear window of a car. The accelerometer can also be used to alert the driver each time the applied braking force exceeds a threshold level, e.g. as a corrective tool for learner drivers. A status indicator is used to indicate whether the accelerometer is at optimum orientation. |
