Patent ID: 8911380

Claim:
A respiration monitoring system for monitoring respiration parameters of a subject, comprising: (a) a first temperature sensor; (b) a thermoelectric generator thermally coupled to said first temperature sensor for generating an electrical signal of the subject respiration that depends on a preset temperature of said thermoelectric generator and the temperature of the subject's respiration, said thermoelectric generator to be driven to a calculated preset temperature; (c) a second temperature sensor to measure an ambient temperature; (d) a feedback error signal processor coupled to said thermoelectric generator and configured to develop and output a processed electrical signal that depends on said ambient temperature, said calculated preset temperature and said subject's respiration temperature; and (e) a compensating power controller electrically coupled to said feedback error signal processor and said thermoelectric generator for developing a compensating electrical signal input to said thermoelectric generator to drive said thermoelectric generator to said calculated preset temperature.