| 摘要 |
PURPOSE:To record the diagnosis data having high reliability by recording the trouble diagnosis data of an air bag device into an NVRAM (semiconductor nonvolatile memory) in multiple form and comparing said data in a processing part and detecting the trouble of a semiconductor nonvolatile memory (NVRAM) itself. CONSTITUTION:An air bag device 1 is constituted of a plurality of G sensors 1b1 and 1b2, squib 1c, and an electric power source 1a for feeding are ignition electric current of the squib 1c. If, in this case, the trouble of the air bag device 1 is detected by the detection part 2a of a processing part 2, said detection is judged by a microcomputer 2, and an alarm signal is outputted into an alarm device 3, and the trouble diagnosis data is written into an NVRAM 4. Further, when a detection part 2b detects the electric conduction of the squib 1c, the squib electric conduction data is written into the NVRAM 4 by the microcomputer 2c, and the writing-in of the data into the NVRAM 4 is prohibited. |
