Electric Power Research Institute Incorporated

Philip Cochrane

Douglas Stewart Dorr

Thomas A Cooke

Norman Darnell McCollough, Jr

Robert Ira Kavet

Kermit O Phipps

The use of implanted medical devices that address a wide range of health conditions is rapidly expanding. These implanted devices include: Cochlear implants, drug dispensing pumps, cardiac pacemakers, defibrillators and other devices. Although these devices are designed to withstand interference from external radio frequency, electric and magnetic fields, interference can occur which may affect the operation of these devices and pose a health risk. An inventive personal, body-wearable electric field, radio frequency, and three-axis magnetic field monitoring device detects the ambient radio frequency, electric and magnetic fields and warns the wearer when any of these field measurements exceeds a safe level.

Portable magnetic, electric and radio frequency field monitoring apparatus and method

This invention relates to non-contact measurement methods and an apparatus for the identification of hazardous contact voltages on energized objects and surfaces. The apparatus includes an electric field sensor structured to sense an electric field and a gain amplifier electrically connected to the electric field sensor to amplify electric signals from the electric field sensor. The apparatus further includes a signal conditioning circuit adapted to process the amplified electric signals and form time-coordinated signals and a digital signal processor adapted to evaluate the time-coordinated signals and provide a user with a status of a contact voltage source by activating an appropriate status indicator.

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Maryville, TN, United States of America

Philip Cochrane