A Method for Utilizing Commercially Available Sensors to Investigate Magnetic Field Perturbations Associated With Ballistic Events

Report No. ARL-TR-5625
Authors: Thomas Kottke
Date/Pages: August 2011; 28 pages
Abstract: This report presents an architectural framework for utilizing commercially available magnetic sensors to investigate magnetic field perturbations associated with ballistic events. Specifically, the Honeywell HMC1043 three-axis magnetoresistive field sensor is considered along with required circuitry to provide signal offset compensation, signal amplification, and set/reset strap capability. Conditions are quantified for which active offset compensation is desirable, and a method for achieving this compensation is discussed along with the constraints that active compensation imposes on signal amplification. A method for realizing optimal magnetic sensor performance through sensor conditioning set/reset operations is presented. A scheme for integrating an array of 32 HMC1043 magnetic field sensors into a microprocessor-controlled data acquisition and storage system is outlined, and fabrication details are provided.
Distribution: Approved for public release
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Last Update / Reviewed: August 1, 2011