Development of Wireless Instrument for Measuring Cattle's Somatic Information for Stockbreeding Automatization(II) - Development of Single-Channel Wireless Instrument for Measuring Sphygmus -

축산자동화를 위한 가축의 생체정보 무선 계측장치 개발(II) - 단일채널 무선 맥박 계측장치 개발 -

It is important to measure the somatic informations for stockbreeding automatization. This study was carried out for the development of wireless measurement system of sphygmus in living animals. In meauring sphygmus counting with the single-channel telemety system, a LED-photo transistor sensor showed more sensitivity to the change of blood pressure than a piezo-electric sensor based pressure sensor. The LED-photo transistor sensor resulted ${\pm}1.29%$ of measurement error of sphygmus counting. In the process of transmitting and receiving the blood pressure signal for counting sphygmus, noises were mixed with, and the noises made the counting almost impossible. Auto-correlation analysis technique was applied to the signal data to extract the sphygmus information, and the technique was proved to be very effective.