Crash Impact Sound Sensing (CISS) - higher crash discrimination performance at lower cost

Current crash sensing technology is mainly based on the measurement of acceleration, aside from the pressure sensing technology for side impact sensing introduced by SiemensVDO in 1997. The airbag control unit mounted in the passenger compartment captures vehicle acceleration and calculates the crash detection algorithms. In most of today's systems, the discrimination algorithms are supported by acceleration or air pressure data measured at the crash zone of the vehicle. Conventional sensor setups have difficulties detecting specific crash situations (e.g. low speed wall versus high speed deformable barrier or angular situations) in a timely manner and with good robustness. The measurement of "Crash Impact Sound" in the vehicle structure improves the discrimination of today's sensing systems significantly. "Crash impact sound sensing" leads to higher discrimination robustness. Very fast activation times of passive restraints like belt pretensioners and airbags can be achieved and give occupants maximum protection. In addition the number of sensors in the safety system can be reduced due to fast signal transmission. As an example, two early crash sensors can be reduced to one. The integration of "Crash Impact Sound" sensing into the central control module allows single point sensing for most frontal impacts. For the covering abstract see ITRD E127621.

• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/issn/07224087
• Authors:
  • ZIEGAHN, K -
  • FESER, M
  • WIEAND, C
  • SCHMIDT, C
  • BRANDMEIER, T
• Publication Date: 2004

Language

• English

Media Info

• Pagination: 17.1-17.11
• Serial:
  • PROCEEDINGS OF 7TH INTERNATIONAL SYMPOSIUM AND EXHIBITION ON SOPHISTICATED CAR OCCUPANT SAFETY SYSTEMS - AIRBAG 2004 - HELD KARLSRUHE, GERMANY, 29 NOVEMBER-1 DECEMBER 2004
  • Publisher: FRAUNHOFER INSTITUET FUER CHEMISCHE TECHNOLOGIE (ICT)
  • ISSN: 0722-4087

Subject/Index Terms

• TRT Terms: Conferences; Costs; Crashes; Detection and identification; Improvements; Sensors; Sound
• ITRD Terms: 1631: Collision; 8525: Conference; 224: Cost; 9115: Detection; 9108: Improvement; 6120: Sensor; 6748: Sound
• Subject Areas: Finance; Vehicles and Equipment; I91: Vehicle Design and Safety;

Filing Info

• Accession Number: 01018122
• Record Type: Publication
• Source Agency: Transport Research Laboratory
• Files: ITRD
• Created Date: Feb 2 2006 8:09AM