SHIMMER

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SHIMMER [1] is a small sensor platform designed for wearable applications by Intel's Digital Health Group. The platform features an integrated 3-axis accelerometer, large storage (micro SD card), and low-power standards based communication capabilities on the based board. It supports standalone application as such as motion capture. Additional sensing capabilities can be added via extension boards which connect to the base platform via Hirose 20 position connector. The platform is fundamentally a radio agnostic platform supporting both the 802.15.4 and Bluetooth standards in a low-power system architecture.

Contents

Hardware Specifications

Sensing: 3-Axis Accelerometer using Freescale MMA7260Q 1.5/2/4/6g Micropower MEMs Accelerometer into CPU A/D
I/O:

I/O

  • 4 Colored Status LEDs
  • Reset button

Expansion

  • Hirose ST60 series 18 position rugged mobile style external Header for charging, programming, and tethered sensor extensions (12 multi-purpose I/O connections).
  • Hirose DF12 series 20 position internal Expansion header for internal sensor daughter boards (14 Multi-purpose I/O connections)
Radios:

802.15.4 Radio

Class 2 BluetoothTM Radio

CPU:
  • MSP430F1611 CPU Datasheet/Users Guide
    • 10Kbyte RAM, 40Kbyte Flash
    • Up to 8Mhz *8 Channels of 12bit A/D
    • Extremely low power in periods of inactivity
    • Proven solution in medical Sensing applications
Storage: MicroSD slot (Up to 1 GB currently available)

Application

The goal of SHIMMER is to provide an extremely compact extensible platform for long-term wearable sensing in both connected and disconnected settings using proven system building blocks. The design is realized using conventional module design and assembly technology to ensure repeatability and economy.

Current applications

Power

  • Design target is 10 days while sampling 6 channels at 50Hz w/250mAH battery.
  • "Deep Sleep" shelf life is >1 year per battery spec
  • Integrated Li-ion battery charger
  • Ability to monitor and indicate power status

Software

Additional Information

Papers

  • Baker, Chris R.; Armijo, Kenneth; Belka, Simon; Benhabib, Merwan; Bhargava, Vikas; Burkhart, Nathan; Minassians, Artin Der; Dervisoglu, Gunes; Gutnik, Lilia; Haick, M. Brent; Ho, Christine; Koplow, Mike; Mangold, Jennifer; Robinson, Stefanie; Rosa, Matt; Schwartz, Miclas; Sims, Christo; Stoffregen, Hanns; Waterbury, Andrew; Leland, Eli S.; Pering, Trevor; Wright, Paul K., Wireless Sensor Networks for Home Health Care, Advanced Information Networking and Applications Workshops, 2007, AINAW '07. 21st International Conference on, vol.2, no., pp.832-837, 21-23 May 2007.
  • Kevin D. Blanchet. Telemedicine and e-Health. March 1, 2008, 14(2): 127-130. doi:10.1089/tmj.2008.9989.
  • Lorincz, K., Kuris, B., Ayer, S. M., Patel, S., Bonato, P., and Welsh, M. 2007. Wearable wireless sensor network to assess clinical status in patients with neurological disorders. In Proceedings of the 6th international Conference on information Processing in Sensor Networks (Cambridge, Massachusetts, USA, April 25 - 27, 2007). IPSN '07. ACM, New York, NY, 563-564.
  • Patel, Shyamal; Lorincz, Konrad; Hughes, Richard; Huggins, Nancy; Growdon, John H.; Welsh, Matt; Bonato, Paolo, Analysis of Feature Space for Monitoring Persons with Parkinson's Disease With Application to a Wireless Wearable Sensor System, Engineering in Medicine and Biology Society, 2007. EMBS 2007. 29th Annual International Conference of the IEEE, pp.6290-6293, 22-26 Aug. 2007.

References

  1. http://shimmer-research.com/wordpress/home

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