Method and system of monitoring respiratory signal by radio
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United States of America Patent
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Nov 9, 2010
Grant Date -
Dec 4, 2008
app pub date -
Jul 19, 2007
filing date -
Jun 4, 2007
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A method and system is provided for monitoring a respiratory signal by radio. The method includes the steps of: converting a change in electric resistance, which is caused by a change in abdominal circumference measured through a rubber waistband that is made of conductive rubber and is mounted on a lower garment of a testee during respiration, into a voltage signal, performing A/D conversion on the voltage signal, and transmitting the converted digital signal to a short distance by radio using a wireless communication protocol for ZigBee; and receiving the respiratory signal transmitted by radio, transmitting it to a computer unit by wire through an RS-232 port that is a serial communication port, and enabling a tester to monitor the respiratory signal through a screen.
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