Week 8

Javier and Nicholas J. Holden

This week was spent working with the radio in order to try and get the radio to release a pulse for the ultrasound. The beginning of the week was primarily about getting used to the GNUradio by doing the different tutorials given by the software and viewing the results using the oscilloscope. Once these were finished, we attempted to create the pulse wave needed for the ultrasound. We figured out the parts needed in order to create the wave. We did encounter some issues in this process primarily because of getting the pulse duration just right by deciding the timings of the different pieces and amounts.  

Nicholas J. Holden persevered on Thursday due to teammate and hardware specialist, Javier, having to attend to a sensitive matter. The beginnings of the Arduino code was formed in an effort to begin work to move the ultrasound sensor around the artifact. Unfortunately, this did not get too far in the development stage. Nicholas J. Holden then tried to work on the GNUradio with the software associated with the device. Little progress was made, however, much was learned from Grissom who gave a short lecture to two groups about the overall direction he wanted groups to go with the software.

Figure 1 – illustrates the sinusoidal wave achieved with the radio.

Figure 2 – illustrates the software we have working with to generate the appropriate waves.

We are currently trying to survive the Coronavirus and will continue to update this blog and the continuation of our work.

Question: What is the role of the quarter-wave line?

This allows the path to the Rx port to seem like an open or closed circuit by changing the impedance of the line. This wire has to be a quarter of the length of the wavelength of the wave being used.