| 摘要 |
<p>A navigation device for opening/closing the door of an electric garage automatically by remote control but not manual operation without opening/closing the door erroneously. The navigation device is connectable to a wireless garage door opener transmitter (50). The navigation device transmits an opening signal to the wireless garage door opener transmitter (50) when the location of the car calculated by a GPS receiver (24) and the azimuth measured by a gyro sensor (40) are within predetermined ranges of preset opening instruction position and azimuth of the electric garage door, respectively and when the speed of the car measured by a car speed sensor (38) is lower than a predetermined value. This makes it possible to prevent the electric garage door from being erroneously opened, when a car approaches the electric garage so as not to enter the electric garage.</p> |
