| 摘要 |
PURPOSE:To surely send accident information by sending the accident information through the use of an antenna not damaged when the other antenna is damaged by an accident. CONSTITUTION:When a collision accident takes place in a vehicle in driving, a shock sensor 11 is operated to generate an output signal and the output signal is inputted to a controller 15. A front side antenna 7a for an automobile telephone radio frequency band is installed to a face of a front glass of the vehicle and similarly a rear side antenna 7b is installed to a face of a rear glass plate. Then a radio equipment 6a of a cellular telephone set 6 connects a radio channel with a base station by a command from a transmission control section 15a of the controller 15 and accident information is sent from an antenna having a larger reception level and not being an antenna damaged by a shock of the accident whose sensitivity is decreased in the front side antenna 7a and the rear side antenna 7b selected by an antenna changeover device 18. |
