Accession Number : ADA624388


Title :   Non-Contact Circuit for Real-Time Electric and Magnetic Field Measurements


Descriptive Note : Final rept. Mar-Aug 2015


Corporate Author : ARMY RESEARCH LAB ADELPHI MD SENSORS AND ELECTRON DEVICES DIRECTORATE


Personal Author(s) : Heintzelman, Sean M


Full Text : https://apps.dtic.mil/dtic/tr/fulltext/u2/a624388.pdf


Report Date : Oct 2015


Pagination or Media Count : 24


Abstract : This report describes the US Army Research Laboratory (ARL) multimodal D-dot (MD-dot) sensor, a 1.25 inch x 2 inch integrated circuit that can stand alone or be attached to an energized conductor to measure both electric and magnetic fields simultaneously. The MD-dot circuit has programmable 0 to 80 dB output gain and 0 3.3 V DC offset to maximize dynamic range. Furthermore, active output control allows us to vary the signals for compatibility with most data acquisition (DAQ) input requirements; however, it is designed to work best with the ARL Real-Time Electric and Magnetic Integrated Sensor (ARTEMIS) smart sensing node. The gain and offset are programmed with 1Wire communication protocol, but are also compatible with serial peripheral interface (SPI) and universal asynchronous receiver-transmitter (UART) for increased programming flexibility. The gain and offset accuracy for the MD-dot is measured to allow real-time calculation of electric and magnetic fields. An ARL-designed electric-field cage is used to generate electric fields and characterize the sensor s frequency response, noise spectral density, and dynamic range.


Descriptors :   *CIRCUITS , *ELECTRIC FIELDS , *MAGNETIC FIELDS , DATA ACQUISITION , DENSITY , DETECTORS , DYNAMIC RANGE , FREQUENCY RESPONSE , GAIN , MEASUREMENT , REAL TIME , RECEIVERS , TRANSMITTERS


Subject Categories : Electrical and Electronic Equipment
      Electricity and Magnetism


Distribution Statement : APPROVED FOR PUBLIC RELEASE