Document Type : Full Research Paper

Authors

1 Associate Professor, Fluid Mechanic Group, Department of Mechanical Engineering, I.R.O.S.T.

2 Assistant Professor, Biomedical Engineering Group, Department of Electrical Engineering, I.R.O.S. T.

10.22041/ijbme.2008.13423

Abstract

Hot-wire anemometry (HWA) is a suitable method for pulmonary research and routine tests. This anemometry method has high frequency response, calibration stability, low pressure drop and desired precision over whole clinical range of human respiration. Nevertheless, flow direction detection in inspiratory and expiratory phases is one of the main problems in this method. We apply the obstacle-­wake probe as a solution. In this probe, an obstacle is inserted between 2 bot-wire sensors; and the effects of the shape and relative position of the obstacle and hot-wire sensors are discussed. Finally the results are used in manufacturing a clinical spirometer. It satisfies common clinical/research demands along with inspiratory/expiratory flow direction detection. 

Keywords

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