A vehicular emergency reporting device includes a voltage step-down unit, an auxiliary power source, a voltage step-up unit, a control unit, an emergency report executing unit, and a switching unit. When a decreased voltage decreased by the voltage step-down unit is lower than an increased voltage increased by the voltage step-up unit, the emergency report executing unit performs an emergency report using the increased voltage as the operation voltage. When the decreased voltage is lower than the increased voltage, the switching unit switches a power supply mode between a first mode in which the increased voltage is supplied to the control unit and the emergency report executing unit and a second mode in which an auxiliary power source voltage is supplied to the control unit and the emergency report executing unit without being increased by the voltage step-up unit.
Vehicular emergency reporting device
2016-10-11
Patent
Electronic Resource
English
IPC: | B60R Fahrzeuge, Fahrzeugausstattung oder Fahrzeugteile, soweit nicht anderweitig vorgesehen , VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR / B60L PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES , Antrieb von elektrisch angetriebenen Fahrzeugen / G08B SIGNALLING OR CALLING SYSTEMS , Signalisier- oder Rufsysteme |
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