Land vehicles – Wheeled – Attachment
Patent
1988-09-02
1989-06-27
Rice, Kenneth R.
Land vehicles
Wheeled
Attachment
180274, B60R 2108
Patent
active
048423017
ABSTRACT:
A crash sensing and occupant restraint activating apparatus is disclosed for a vehicle having a welded unit body structure including a side rail extending back from the front of the vehicle on each side. An acoustic sensor near the front of each side rail generates a signal in response to acoustic vibrations due to metal deformation in a frontal crash. The signals from the sensors are processed through a bandpass filter and an envelope detector. A comparator/timer generates a crash signal to activate an occupant restraint only when the envelope of the filtered sensor signal exceeds a predetermined amplitude reference for a predetermined time period of substantially 5 milliseconds. The envelope detector has a time constant of substantially 2 milliseconds; and the bandpass filter passes 200 to 300 KHz.
REFERENCES:
patent: 4021057 (1977-05-01), Held et al.
patent: 4059822 (1977-11-01), Toshioka et al.
patent: 4087782 (1978-05-01), Oishi et al.
patent: 4346914 (1982-08-01), Livers et al.
patent: 4504082 (1985-03-01), Brown, Jr. et al.
General Motors Corporation
Rice Kenneth R.
Sigler Robert M.
LandOfFree
Acoustic emission automotive crash sensor does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Acoustic emission automotive crash sensor, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Acoustic emission automotive crash sensor will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-807448