JCIR_V2_N3_RP5
Low Cost Instrumentation For Ultrasonic Measurements
Apurva Gandole
Omkar S. Ghatpande
Yogendra Gandole
Journal on Circuits And Systems
2322–035X
2
3
25
31
Instrumentation, Ultrasonic, Pulse Generator, Receiver, CMOS, Complementary Metal-Oxide Semiconductor)
Low cost Instrumentation for ultrasonic velocity and attenuation measurements in liquids and solids is described in this paper. 1--10 MHz pulse generator is assembled using CMOS integrated circuits having pulse width of 2 to 60 microseconds. The wideband receiver is developed by using the Wideband Low Distortion, High Gain Operational Amplifier (OPA 643). The gain and bandwidth of the receiver are 50 dB and 10 MHz respectively. Transit time measurement has been performed by using the NI-LABVIEW and Multifunction I/O card NI-USB-6212. The system is found suitable, accurate and versatile for ultrasonic velocity and attenuation measurements.
June - August 2014
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