Patent Number: 6,674,362

Title: Emergency informing terminal and emergency informing system including the terminal

Abstract: A main controller for controlling an emergency informing terminal, and a sub controller for controlling communications with an external device are provided. The main controller and sub controller have microcomputers, and the main controller and sub controller monitor the operation of each other. If the other is abnormal, a reset signal is issued to initialize it, and if still abnormal, the history of abnormality is recorded, and the abnormality is informed to the user by means of sound or light. The power source device of this emergency informing terminal has a function of cutting off power supply to the emergency informing terminal when overheat or overcurrent occurs in the auxiliary battery which operate when supply from the main battery is interrupted, and if overheat or voltage drop occurs due to short circuit of the auxiliary battery or other trouble, power supply into the emergency informing terminal is cut off, so that spread of damage may be avoided.

Inventors: Yoshioka; Kenji (Kanagawa, JP), Inui; Takeshi (Osaka, JP), Tanahashi; Takayuki (Osaka, JP), Shimizu; Toshiyuki (Osaka, JP)

Assignee: Matsushita Electric Industrial Co., Ltd.

International Classification: G08B 25/01 (20060101); G08B 029/00 ()

Expiration Date: 01/06/2021