Hydration and composition measurement device and technique

摘要

A hydration and composition measurement device and technique that in one embodiment includes a microcontroller; a phase lock loop frequency synthesizer controlled by the microcontroller to generate radio frequencies; a cavity for use in resonating at a set of frequencies; a radio frequency power detector for measuring perturbed cavity resonance; and an analyzer. The hydration and composition measurement device may further include a circulator, which receives frequencies from the phase lock loop frequency synthesizer, and an antenna connected to the circulator and cavity. The cavity may be defined by a metallic material or members, and the cavity includes a hole configured to provide access of tissue to be tested to the cavity.

主权项

1. A method for measuring hydration and body composition comprising the steps of:
providing a device capable of measuring a cavity resonance perturbation the device including a phase lock loop frequency synthesizer, a circulator, a radio frequency power detector, and an analog-to-digital converter; resonating a set of frequencies in a cavity of said device; contacting tissue with the cavity to perturb the resonance; measuring the perturbed cavity resonance; analyzing the perturbed cavity resonance; and feeding the measured perturbed cavity resonance to a microcontroller to obtain a steady state operation, and comparing the perturbed cavity resonance with predetermined values to determine water content of the tissue.