High-G MEMS help detect concussions
May 25, 2012 // R. Colin Johnson
Sports-related concussions have skyrocketed in the U.S. with over 3.8 million reported each year. New MEMS sensors small enough to be mounted inside an athlete's helmet, for example, could perform early detection of symptoms, giving doctors time to administer preventative therapies.
"Starting about a year and a half ago we started getting requests for MEMS accelerometers to detect concussions," said Wayne Meyer, MEMS marketing and applications manager at Analog Devices. "Concussive forces start at around 60 Gs and go up to about 120 Gs, but most applications also want to provide some headroom so the sensor never saturates,” Meyer added. “So we built ours to sense plus or minus 200 Gs."
Using high-G sensors for early detection of concussions could drastically reduce injuries, according to the American Association of Neurological Surgeons, since most injuries occur because treatment is delayed. More than 75 percent of concussions go undiagnosed, eventually contributing to over 30 percent of head trauma deaths in the U.S., according to the Centers for Disease Control and Prevention. Early detection also could cut medical bills and lost productivity, which is estimated to exceed $76 billion annually.
Analog Devices, which already produces single-axis, high-G accelerometers used to detect concussions in IndyCar drivers, recently redesigned their high-G sensor into a single chip, allowing it to fit inside football and other sports helmets. The high-G MEMS accelerometer measures 3-by-3-by-1.45 mm, making it small enough to fit inside a helmet-mounted earpiece to measure head trauma. The ADXL377 draws only about 300 microAmps, making it suitable of battery operation.
"There are many sports where high-G accelerometers could be used to detect concussions,” said Meyer. “Football and skateboarding come to mind immediately, but even cycling, water sports and snow skiing are all candidates.” Industrial and aerospace applications include high-G MEMS sensors used along with impact tools and other machinery, he said
Recent high-profile NFL incidents involving repeated head trauma have upped the ante for concussion detection solutions. For instance, after former NFL linebacker Junior Seau's recent suicide has been linked to possible head trauma over the course of a long career. Other former NFL players have joined in a lawsuit against the lead claiming it ignored the health and safety of players.
Tiny display rides maker wave
October 23, 2014
Makers are no strangers to modular hardware, and startup Tiny Circuits hopes to bridge the gap between hobbyists and OEMs ...
Silicon fibres offer cheaper solar power benefits
Can garnet ceramics unleash high-energy lithium batteries
Multi-function wireless sensor future proofs workplace lighting
Overcoming the challenges of V-NAND technology
Sensors for wearables market to double in 2015
October 22, 2014
Market analysis and forecast organization IHS thinks that Apple's Watch, will stimulate and set a standard for fitness and ...
IoT cybersecurity: is EDA ready to deliver?
InP circuits set 40Gbps wireless data record
Can Big-data solution free EVs from range anxiety?
- 5 Best Practices for Designing Flexible Test Stations
- Intelligent PLCs Expand the Internet of Things
- Solutions for Millimeter Wave Wireless Backhaul
- Enter Linduino
InterviewCEO interview: AMS' Laney on driving a sensor-driven business
Kirk Laney, CEO of Austrian mixed-signal chip and sensor company AMS, wants to leverage the opportunity that technology affords to create new markets for sensors and sensor interfaces.
Filter WizardCheck out the Filter Wizard Series of articles by Filter Guru Kendall Castor-Perry which provide invaluable practical Analog Design guidelines.
Linear video channel
READER OFFERRead more
This month, Oscium is giving away three of its iMSO-204L dual analogue iOS oscilloscopes, worth USD400 each. Designed with native Lightning compatibility, the iMSO-204L transforms the iPad, iPhone, and iPod touch into an ultra-portable, two-channel oscilloscope.
Since Apple changed its connector, Oscium has been working to bring native compatibility to its customers. The third generation...MORE INFO AND LAST MONTH' WINNERS...
December 15, 2011 | Texas instruments | 222901974
Unique Ser/Des technology supports encrypted video and audio content with full duplex bi-directional control channel over a single wire interface.