Hello all,
With the term coming to an end, this post will the the last post detailing the progress of this project. In week ten's lab, we presented our project and prototype.
The device we made for this project is now complete. It reads through the user's heart rate, identifies the peaks of the QRS complexes in the ECG signals and from that, calculates the time between each heartbeat. By doing this, the device is able to detect abnormal rhythms in the user's heart and notify the user of such abnormalities. Improvements we've made since last week's project check include adding filtering and debugging the code we had for calculating the time between the peaks in the user's heart rate. We filtered the ECG signals by calculating a moving average of the data from the sensors. This smoothed out the data and helped to ensure more accurate readings.
Though we initially hoped to develop a smartphone application to go with the heart rate monitor, there wasn't enough time for that. Currently, the device is capable of communicating data over Bluetooth. So future work on this device includes developing an app that could send a distress signal to a user's physician or emergency medical services. The inspiration for this was the fact that text-to-911 is something that is expected to be in widespread use in the next few years. Other improvements that could be made include better filtering and using better sensors with more leads. This would improve the device's rhythm abnormality detections. More can be seen about this in our final report (found in the Reports and Documents page).
June 3, 2014
May 27, 2014
Weekly Update #9: Project Check
There was not much done in lab this week as this lab was spent tweaking things for the project check.
The results of the check has shown us that we need to put in code to filter the ECG signals and read and display heartbeats per minute of the user on the device. We also need to put together a presentation for week 10.
The results of the check has shown us that we need to put in code to filter the ECG signals and read and display heartbeats per minute of the user on the device. We also need to put together a presentation for week 10.
May 21, 2014
Weekly Update #8: Button and Filtering
Hello,
We hooked up the Bluetooth module again to allow the device to communicate with a smartphone or computer wirelessly. We also put a button on the device to act as a kill switch. The button currently restarts the device. We need to change this so that it just stops the functions of the device. Since this is not an integral part of the device, we aren't spending much time on it. Should it not work, it will just be left off of the final deliverable.
We worked on trying different ways to filter the signals as the sensors are not very accurate. We haven't found a way that works well enough to make us want to keep it in the program for the device. This is what most of the remaining time will be spent on with the project.
We hooked up the Bluetooth module again to allow the device to communicate with a smartphone or computer wirelessly. We also put a button on the device to act as a kill switch. The button currently restarts the device. We need to change this so that it just stops the functions of the device. Since this is not an integral part of the device, we aren't spending much time on it. Should it not work, it will just be left off of the final deliverable.
We worked on trying different ways to filter the signals as the sensors are not very accurate. We haven't found a way that works well enough to make us want to keep it in the program for the device. This is what most of the remaining time will be spent on with the project.
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