Title :
A novel gas flow sensor based on sound generated by turbulence [and spirometry application]
Author :
Rabbani, K.S. ; Islam, Suravi ; Alam, Shumon
Author_Institution :
Dept. of Phys., Dhaka Univ., Bangladesh
Abstract :
A novel gas flow sensor has been developed based on the sound produced by turbulence that is created by a small obstruction placed in the path of the flow. A microphone placed behind the obstruction gives an electrical output which is conditioned and calibrated for flow rate. The sensor has no moving parts making it robust. A computerised system with appropriate data correction is being developed for spirometry using this sensor
Keywords :
acoustic signal detection; acoustic signal processing; biomedical equipment; biomedical ultrasonics; calibration; capacitance measurement; computerised instrumentation; electric sensing devices; flow measurement; flowmeters; microphones; pneumodynamics; signal detection; turbulence; calibrated output; capacitor microphone; computerised system; conditioned electrical output; data correction; flow path; gas flow sensor; interfering noise effect; robust sensor; small obstruction; sound generated by turbulence; spirometry; Acoustic noise; Acoustic sensors; Application software; Computer displays; Fluid flow; Gas detectors; Microphones; Microprocessors; Plastics; Voltage;
Conference_Titel :
Instrumentation and Measurement Technology Conference, 1997. IMTC/97. Proceedings. Sensing, Processing, Networking., IEEE
Conference_Location :
Ottawa, Ont.
Print_ISBN :
0-7803-3747-6
DOI :
10.1109/IMTC.1997.612426
