Title :
Detecting Human Pulse in P-SPICE Model Using Lock-In Amplifier
Author :
Arafat Bin Azidin, F. ; Bin Zainudin, Z.
Author_Institution :
Fac. Electron. Eng. & Comput., Univ. Teknikal Malaysia Melaka, Ayer Keroh, Malaysia
Abstract :
The goal of this project is to develop low noise pulse detection simulation models with the help of Lock-In analysis. This technique offers better result in extracting signal at extremely noisy environment. Two major noises that influence the detection of pulse signal are noise that comes from surrounding lights and noise from ripple voltage of power supply. The basic components of Lock-In analysis are modulation, multiplication and low pass filter. It uses the principle of amplitude modulation which is widely used in communication technique. Current-to-voltage converter (transimpedance) amplifier is applied in detecting signal from photodiode. The P-SPICE simulation models offer undergraduates to understand the concept of Lock-In analysis.
Keywords :
SPICE; amplitude modulation; operational amplifiers; signal detection; P-SPICE model; amplitude modulation; current-to-voltage converter; human pulse detection; lock-in amplifier; low noise pulse detection simulation; low pass filter; power supply ripple voltage; signal detection; signal extraction; Amplitude modulation; Analytical models; Humans; Low pass filters; Photodiodes; Pulse amplifiers; Pulsed power supplies; Signal detection; Voltage; Working environment noise; Lock-In analysis; P-SPICE simulation; Pulse detection; transimpedance;
Conference_Titel :
Soft Computing and Pattern Recognition, 2009. SOCPAR '09. International Conference of
Conference_Location :
Malacca
Print_ISBN :
978-1-4244-5330-6
Electronic_ISBN :
978-0-7695-3879-2
DOI :
10.1109/SoCPaR.2009.145
