EMERGENCY REPORT SYSTEM TERMINAL EQUIPMENT AND EMERGENCY REPORT SYSTEM

摘要

PROBLEM TO BE SOLVED: To suppress the power consumption of an auxiliary battery in the case of exchanging a main battery at the time of maintenance in an emergency report system terminal equipment for switching power supply from the main battery to the auxiliary battery when the main battery is failed at the occurrence of an accident. SOLUTION: Both of a power supply route 9 of power +B directly supplied from the main battery 7 and a power supply route 10 of power ACC supplied when a vehicle key switch 8 is turned to an accessory are monitored, and when power supply in both the routes 9 and 10 is stopped or only the supply of the power +B is stopped, the failure of the main battery 7 is judged and power supply from the main battery 7 is switched to the auxiliary battery 19.