| 摘要 |
A sensor uses an accelerometer to measure acceleration values in two axes to detect if a tip-over angle of a system has exceeded a tip-over threshold angle α. Each acceleration value is respectively multiplied by a corresponding factor a, b. The two factors a, b are chosen as a function of the tip-over threshold angle α. Two values are calculated and each calculated value is compared to zero. Depending upon which values are greater than or less than zero determines whether the tip-over angle has been exceeded. The detector, upon sensing of a tipped-over condition, provides a signal indicative of that condition. The output signal can be employed to trigger an alarm or to shut down a device that has tipped over or to otherwise denote the tipped-over condition. |
