INTEGRATIVE LIGHT-POWERED LIGHT-MONITORING SYSTEM

摘要

A user's light exposure is monitored by receiving light exposure from a light source with an integrative light monitor. A photovoltaic cell converts the light exposure into electric current. At least some of the electric current is directed from the photovoltaic cell through a first conductive pathway to an energy harvester that increases its voltage to produce a stepped-up current, which is directed into an energy-storage device. Electric current is then extracted from the energy-storage device and delivered to electrical components in the integrative light monitor to power the electrical components. At least some of the electric current from the photovoltaic cell is directed through a second conductive pathway to a microcontroller that measures the electric current. The measured electric current is integrated to produce a cumulative luminous exposure value, which is compared with an established luminous-exposure target for achieving a health benefit.