The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 07, 1996
Filed:
Dec. 23, 1992
Hiroyuki Ueda, Hyogo, JP;
Takashi Furui, Hyogo, JP;
Mitsubishi Denki Kabushiki Kaisha, Tokyo, JP;
Abstract
An electronic system for activating a vehicle rider protection apparatus capable of preventing the erroneous activation caused by the failure or malfunctioning of the triggering circuit in the system. An acceleration sensor produces a vehicle acceleration signal, and it is processed independently by a digital signal processor and analog signal processing circuits, which produce trigger signals S.sub.A, S.sub.B and S.sub.D on detecting a collision of the vehicle. An OR gate takes logical sum of the signals S.sub.A and S.sub.B, and produces a trigger signal S.sub.C. An AND gate takes logical product of the signals S.sub.C and S.sub.D, and produces a final trigger signal S.sub.E. In response to the final trigger signal S.sub.E, a current is supplied to a squib, which then ignites and activates the vehicle rider protection apparatus. A diagnostic circuit applies a test signal to the analog signal processing circuits, and tests the operation of the circuits by analyzing the outputs of the circuits.