Auto safety

Endevco’s accelerometers set the industry standard for safety testing in anthropomorphic test dummies, on- vehicle, barrier and sled testing.  These premier transducers created the original specifications for the National Highway Traffic Association (NHTSA) and other US agencies.  Continuing its technical leadership, Endevco crash sensors meet or exceed Society of Automotive Engineers (SAE) specifications J211 and J2570.  Further, these high-reliability sensors are used for vehicle crash and passenger safety tests in accordance with the European New Car Assessment Programme (EuroNCAP), US Federal Motor Vehicle Safety Standards (FMVSS) and related global legislative and safety testing regulations.

TYPICAL APPLICATIONSREPRESENTATIVE MODELS
Anthropomorphic test devices (ATD)7264C, 7268C, 7302BM5
On-vehicle crash test7264H, 7287
Sled testing2262A, 7264C
Pedestrian safety testing7264H
Airbag testing8530BM37
Side impact testing7287

Application considerations

On-Vehicle side, rear, frontal crash testing

For vehicle side, rear and frontal crash testing, the 7264C series is the industry’s gold standard. Offered in weights as low as one gram, with a full-scale output of 400 mV and 10 Vdc excitation, these piezoresistive sensors (7264C, 7264B, 7264D, 7264H) utilize an advanced MEMS sensor with integral mechanical stops in a monolithic design.  This ensures ruggedness, stability and reliability. This series is offered in both undamped and lightly damped versions, which helps minimize phase shift. Models are available with < 1% transverse sensitivity (“T” option), as well as optional input voltage. The performance specifications of the 7264C series also allow them to be used for rough road testing.

Anthropomorphic Test Devices (ATDs)

Many vehicle and sled crash tests often use ATDs that require precision accelerometers to simulate high-impact events. This testing ensures the effectiveness of in-vehicle safety components such as airbags and seatbelts, and their abilities provide sufficient passenger protection and restraint.  As the direction or source of vehicle impact may be unclear, the highly rugged 7268C, an undamped, high output miniature piezoresistive triaxial accelerometer, is often specified.  Units are supplied with integral cable, and offered with customer ability to specify both excitation voltage and cable length. This sensor is world SID dummy approved, and meets EuroNCAP, SAE J211 and SAE J2570 testing standards.

Crush Zone Testing

Vehicle crush zone test installations incorporate crash accelerometers in areas which deform under high shock inputs.  These sensors must be rugged enough to withstand high shocks, sensitive enough to trigger  passive restraint systems  and able to record data to a high degree of accuracy.  Most importantly,  they must be cost-effective enough to justify one-time use. To meet these requirements, Meggitt offers Endevco models 7286 and 7287. With frequency responses extending down to dc (steady state acceleration), these accelerometers are ideal for measuring the long duration transient shocks typically encountered within vehicle crush zones.

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Sensor features that may be critical in auto safety testing

  • SAE J211, 2570 and ISO 6487 compliant
  • Industry standard
  • DC response
  • Gas damping
  • Miniature size
  • High over range protection
  • Wide measurement range up to 2000g