Patent Number: 6,480,772

Title: Vehicle crash determining apparatus

Abstract: A discrimination is made between a soft crashing in which a relatively low acceleration signal continues for a long period of time and a low-speed head-on crashing so that an air bag can be started at an appropriate timing. An occupant protecting apparatus for that purpose is made up of: a first comparator for comparing an output signal of an acceleration sensor which detects an impact at the time of crashing of a vehicle and a first threshold value; a second comparator for comparing an integrated value of an integrator which integrates an output of the first comparator within a predetermined section and a second threshold value while making a shift by a unit time within a predetermined section; and a starting device for controlling the starting of the air bag based on an output signal of the second comparator.

Inventors: Ugusa; Aki (Tokyo, JP), Yamashita; Toshiyuki (Tokyo, JP)

Assignee: Mitsubishi Denki Kabushiki Kaisha

International Classification: B60R 22/46 (20060101); B60R 21/01 (20060101); G01P 15/00 (20060101); G06F 7/00 (20060101); G06F 007/00 ()

Expiration Date: 11/12/2019