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Accelerometer senses shocks up to 400g

Posted: 04 May 2012 ?? ?Print Version ?Bookmark and Share

Keywords:motion sensor? accelerometer? car black box? medical monitoring?

STMicroelectronics has uncloaked what it dubs as the world's first motion sensor that measures very high accelerations along all three axes at ultra-low current consumption. The H3LIS331DL accelerometers address the need for precise shock detection up to 400g in space- and power-constrained applications such as car black boxes, medical monitoring devices and sports equipment.

Power-stingy, precise high-shock detection devices open new possibilities for portable medical instrumentation and concussion monitoring in high-impact sports such as ice hockey, American football or car racing. ST's high-g sensors can also significantly improve crash-detection capabilities in event data recorders (black boxes) and freight monitoring systems, as well as enhance anti-shock protection functionality in consumer electronics.


The high-g accelerometers provide 3-axis motion sensing.

According to the company, the high-g accelerometers provide three-axis motion sensing across selectable from 100g up to 400g full-scale ranges, and boast excellent stability over time and temperature. An on-chip IC interface converts the acceleration data into a 12bit digital bit stream that is transmitted with high reliability to a dedicated MCU chip through a standard SPI or I2C protocol.

The H3LIS331DL combines a novel sensing-structure design with the market-proven low-power interface of ST's LIS331DLx acceleration sensors, noted the company. Samples of ST's high-g accelerometers are available and volume production is expected to start by the end of Q2. Unit pricing is $5 for volumes in the range of 1,000 pieces. Further pricing options are available for larger quantities.

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