| 摘要 |
A detecting device applied to a vehicle door has a signal transceiver placed above the vehicle door to monitor by downward signals if any passenger or obstacle is near the door. A control circuit is connected to and controls the signal transceiver to emit detecting signals when the vehicle door is opened. Based on the reflected signals, the detecting device judges if any passenger is near the door, and controls the closing/opening movements of the door to avoid any possible injury to passenger.
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