| 摘要 |
A system and method for controlling a garage door is presented. An alarm system includes an antenna mounted to a garage door. A signal generator logic generates a periodic signal based on a capacitive value of the antenna. The signal generator logic also provides transmit power to the antenna that is radiated away from the garage door. A detection logic detects if there is a change in a characteristic of the periodic signal caused by movement in proximity of the garage door. Amplification logic amplifies the change of the periodic signal. Alarm detection logic determines if the change is an alarm and an alarm response logic will stop a movement of the garage door when the change is an alarm resulting from movement near the door. |
