A PORTABLE SPIROMETER FOR MEASURING LUNG CAPACITY AND RESPIRATION GAS

摘要

The present invention relates to a portable lung function analysis apparatus for measuring the amount of lung capacity and the specific breathing gas at the same time, the main body including an air tube; Infrared spectroscopic unit including an infrared light source, an optical filter and an infrared sensor, for measuring the amount of a particular respiratory gas flowing from the air tube; Spirometry lung capacity detection unit including a sensor for measuring the vital capacity with respiratory gas flowing from the air tube; Signal processing unit comprising the infrared sensor and to each process a signal output from the lung capacity sensor, a signal amplifier, signal processor, a storing unit, a display and a signal transmitting unit; And a control unit including a tank for the reference gas and the reference gas for correcting the measured value for the breathing gas, characterized in that each unit can be operated independently of each other.