Hei, vi må restarte Brage pga. ytelsesproblemer. Dvs. nede ca. kl. 14:13-14:15.
Ultrasound Transmit-Receive Electronics: Study and Upgrade
MetadataShow full item record
The ultrasonic investigation using transmission of ultrasounds and receiving of the back-scattered echoes is a recognized measurement technology since from the decades. One of the heavy and bulky instrumentation parts in a conventional ultrasound transmit-receive system are the function generators along with power ampliﬁers required to provided appreciable signal for ultrasound transducer excitation. Technology today where miniaturization has become the prime essence, system design in digital hardware by exploiting programmable logic devices is attractive. This work presents the ultrasound transmit-receive instrumentation designed for ﬂexible user interface, portability and ability to be adopted in various types of ultrasound interrogation. The preliminary design of the ultrasound transmitter using a complex programmable logic device has been accomplished. The essential features for making Doppler velocity measurement has been considered in the system design. Some primary acoustic measurement made with the designed instrumentation is illustrated here. The ﬂexibility, challenges and possible upgrade of the design instrumentation for various ﬁeld of applications is also discussed in the work.