Andrew's Week 7 Report

This week I worked with Ashley to develop communication between the ADE7763, the Atmega328P and the Computer via an RS232 connection.  After troubleshooting and tracing through our connections we were able to develop a relevant signal between the Atmega and ADE7763 via the SPI communication bus.  We were able to get a temperature measurement which was about 15 degrees Celsius but quickly climbed after touching it with the fingertip. Despite the accomplishments reading temperature we were unable to get a consistent voltage measurement.  Hopefully through troubleshooting we will be able to obtain a meaningful measurement which will allow us to calibrate our device.  The picture below captures the SCLK and MISO of the Atmega 328P.

 

To prototype our design without having to use isolation we are currently connecting the V1 and V2 inputs of the ADE7763 to a function generator set at 60 Hz.  Shown below is a waveform of the function generator and the scaled down signal present at the V2 input of the ADE7763.

 Now that Ashley and I have been able to obtain a meaningful signal between the ADE7763 and the Atmega328P I am now going to to work heavily on the isolation end of the circuit so that we can safely handle the 120V AC we intend to manipulate.  Also I plan to continue to work with Ashley to develop more acurrate readings from the registers we are accessing.  Shown below is the circuit as prototyped thus far.