Patent ID: 6502469
Filing Date: 2003-01-07
Classification: G01N

Abstract:
A portable apparatus configured to be worn by a person, comprising:an enclosure; an air sampling system associated with the enclosure that samples air from a breathing zone of a person wearing the portable apparatus, comprising: a filter device, comprising: a housing including an air inlet in communication with the breathing zone, and an air outlet; and a filter element disposed within the housing that is configured to retain particles entrained within air flowing therethrough; a pump in fluid communication with the filter device air outlet, wherein the pump is configured to draw a predetermined volume of air into the filter device and through the filter element; and a system that intermittently activates the pump to draw the predetermined volume of air through the filter element at predetermined intervals; a physical activity monitor associated with the enclosure that monitors physical activity of the person wearing the portable apparatus, wherein the physical activity monitor does not utilize any part of the air sampling system to monitor physical activity of the person wearing the portable apparatus; and a data logger associated with the enclosure and in communication with the physical activity monitor.