MSP430 Applicationin the medical equipment industry (3)
source: icbuy million core time: 2012-04-05-
system hardware design of
ECG signal obtained by the special electrode into the preamplifier preliminary amplification, in certain inhibitory to the band pass filter to filter the ECG interference signal outside the frequency range of the interference signal, and then by 50Hz and 35Hz notch filter frequency and EMG interference into the main amplifier, finally the main amplifier will be filtered signals. Further enlarged to the appropriate range into the A/D sampling circuit for high precision A/D conversion, A/D conversion chip receives the data displayed on the LCD screen for filtering and correlation processing.
