Resources Contact Us Home
Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
Vehicle crash detection for implementation with low cost microprocessor










Image Number 2 for United States Patent #5758301.

The deceleration of a vehicle on receiving an impact is detected to produce an analog deceleration signal, which is converted to digital samples. The digital samples that occur during a successively shifted window are integrated to produce a velocity signal. The analog deceleration signal is passed through an analog bandpass filter to extract frequency components which appear uniquely on receiving the impact The bandpass-filtered signal is converted to a digital bandpass-filtered signal which is converted to a first impact energy signal having an absolute digital value and the velocity signal is differentiated to produce a second impact energy signal. The first and second impact energy signals are compared with first and second threshold values and first and second decision outputs are produced when the first and second impact energy signals are respectively higher than the first and second threshold values. The velocity signal is compared with a third threshold value and a third decision output is produced when the velocity signal is higher than the third threshold value. An occupant restraint system is operated in response to the simultaneous presence of the first and third decision outputs and in response to the simultaneous presence of the second and third decision outputs. In a preferred embodiment, the velocity signal is further compared with a fourth threshold value and a fourth decision output is produced when the velocity signal is higher than the fourth threshold value. The occupant restraint system is operated in response to the simultaneous presence of the second and fourth decision outputs, instead of to the simultaneous presence of the second and third decision outputs.








 
 
  Recently Added Patents
Microfluidic system incorporating a metal impregnated nanoporous material in a microfluidic pathway thereof
Signal processing device, signal processing method and program
Anti-infective agents and uses thereof
Motion control system and X-ray measurement apparatus
Lighting device with device for regulating the illumination according to the luminance of the illumination field and corresponding use
Discovery, analysis, and visualization of dependencies
Wearable display device
  Randomly Featured Patents
Lift loader
Herbicidal 4-nitro-diphenyl ethers
Battery operated pencil sharpener
Fluid flow reducer
Antibodies to bufalin prevent inhibition of Na/K ATPase and prolong survival in shock
Assembly for securing and sealing a dispenser to a flanged container
SOI voltage dependent negative-saturation-resistance resistor ballasting element for ESD protection of receivers and driver circuitry
Hardware controlled one-time write for fiscal printers
Anti-fungal compositions employing metal salts of carboxylic acids
Adhesive composition