Development of Virtual Instrumentation for Biomaterial Characterization

Abstract: For the characterization of biomaterials the methodology used is the source of signal, Biomaterial sample and the response detector. The high frequency ultrasonic signal generator generates signals of high frequency suitable for biomaterial characterization. Ultrasonic signals are then made to fall on the biomaterial sample to be characterized. While passing through the sample, the ultrasonic signals are absorbed, reflected and scattered along different directions. The transmitted and reflected signals are sense and detect by sensor. The sensor produces proportional current in microamperes. This current will be applied to sensing circuit, which converts current into proportional amplified voltage with the help of an Op-Amp. An analog to digital converter (ADC) converts analog signal into digital signal and provide data to the computer. Driver software makes NI LabVIEW to interact with hardware. Data acquisition circuit interconnects the PC and driver software to which the data is input. The PC with LabVIEW platform is used to develop VI for biomaterial characterization.

Keywords: ADC, Attenuation, Biomaterial, NI LabVIEW, Ultrasonic velocity.