A Histogram Display System (Bio TV) for Physiological Signal Monitoring

摘要

A system, 'BIO-TV,' for display of physiological signals on unmodified television sets has been investigated. The study resulted in the development of a prototype converter that accepts four physiological signals and produces a standard video signal. Four vertical graph bars indicate by their lengths, heart rate, respiration rate, body and skin temperature, and are displayed on one or more television screens. Two horizontal limit lines are also displayed that may be set to indicate high and low safety limits of the measurements. The design concept is flexible and may be adapted to a variety of medical monitoring requirements. The main application of this system is as a convenient, quick-look, safety monitor of patients or subjects in medical research experiments. Design considerations, circuit, and construction details are outlined in the report. (Author)