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Piezo crash test accelerometers get automated calibration

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By eeNews Europe


The industry-exclusive design of the CRASH-CAL system seamlessly integrates MB’s own Model CAL25AB air bearing shaker, together with its Model 407-8X multi-channel signal conditioner; MB 500VI power amplifier; and proprietary Win475 CRASH-CAL software, facilitating the accurate, efficient, and simultaneous calibrations of up to eight piezoresistive crash test accelerometers (DUT’s) of the same model and type, over a frequency range of 10 to 4000 Hz, complying with SAEJ211, SAE2570, and other global automotive industry test standards. Its versatile design further supports individual calibrations of non-piezoresistive DUT’s, including charge mode and IEPE accelerometers, in frequencies from 5Hz to 10kHz.

The MB CRASH-CAL system automatically measures and saves relevant accelerometer characteristics, such as ZMO, Zin and Zout, as well as input & output impedance values. As a highly flexible system, an end-user can choose from among seven individual (six internal, one external) high-precision resistors for shunt calibration. The system also reads onboard sensor electronic identifications, such as 1-Wire Dallas ID memory chips or TEDS piezoelectric accelerometers (per IEEE 1451). The MB CRASH-CAL may be further integrated into customer-specified databases for additional automation capabilities with reduced calibration data transference errors.

MB Dynamics – www.mbdynamics.com

 


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