Design and Development of Biosignal Conditioning and Processing Electronic System by Employing Analog Devices Chip (AD-549) and LabVIEW

Abstract

This research work is focused on the design of bio-sensor, bio-signal conditioning, and processing electronic system by employing analog devices (AD-549) chip and LabVIEW. A simple, low-cost data conditioning and processing system for very low power (of the order of pico-amperes) signal is designed and effectively implemented in the laboratory. This is a new innovative approach which is developed using novel signal conditioning (SC) and processing technique and can be applicable for biological applications. Design and development of electronics circuitry using AD549 for effective signal conditioning has been implemented for possible applications in future technology. A new attempt for biosignal processing using LabVIEW software and hardware module appears to be the better solution especially for biomedical applications. The real-time signal from any sensor or transducer has been accessed (simulated), conditioned, processed, studied, and monitored for values in the range of pico-amperes and nano-volts by using MULTISIM software and PXI-4071 digital multimeter (DMM card). In this work, the signal acquired from the sensor has been conditioned using analog devices chip, AD549 IC, and control signals for this system for further processing are generated using LabVIEW (Laboratory Virtual Instrument Engineering Bench Work) program. The proposed sensor and novel signal conditioning and processing circuit have several advantages such as high sensitivity, greater resolution, better accuracy, precision, and wide application in various biomedical fields.