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Well, here we are at the end of the Sudden Impact Wearables Design Challenge.  Looking back over the past few months I see a mix of enthusiasm, hard work, and great time that I had while working on my project.  I feel fortunate to have had the opportunity to participate in this challenge and I would like to thank again Element14 for organizing it and for selecting me as one of the participants, I would like to thank the sponsors Analog Devices, Tektronix, and Electrolube for providing ...
Hello Everyone,   I have uploaded four demonstration videos on YouTube for my project Wearable Sudden Impact and Health Monitor project.  Here are the links:   Video 1: Short introduction     Video 2: Remotely accessing health measurement data through the cell phone network and displaying it on an Android smart phone   Video 3: Head impact detection, alert sending to used through SMS/text message, and remotely accessing the head impact data     Vid ...
One more measurement feature that I added to the main unit is an electroencephalogram (EEG) module.  The EEG module is mounted on the helmet and uses two active electrodes placed mounted on the sides of the helmet so that they touch the head skin above the ears and one common mode sense electrode mounted on the front inside the helmet, so that it touches the forehead.   The common mode settling time after the helmet is placed on the head is about 2-3 minutes, so any meaningful EEG ...
In this update I will show how I added a pulse oximetry measurement feature to my "Wearable Sudden Impact and Health Monitor" project.   The pulse oximetry and heart rate module measures the Oxygen level in the blood and pulse rate.   Typical measurements of Oxygen level is done trough transmittance method where on LED is applied to one side of a finger tip and an optical receiver diode is applied on the other side of the finger tip.  The transmitted light through the finger tis ...
Here is another update on my "Wearable Sudden Impact and Health Monitor" project.   In this update I will show how I added a measurement feature for body temperature.   The body temperature is measured using the Analog Devices ADT7320, which is very small (4mm x 4mm) and it is mounted on the front inside the helmet, so that it touches the forehead.  To ensure good contact with the skin, the ADT7320 sensor is placed on a layer of elastic sponge-type material.  This implement ...
I started to think more and more that time is passing and we are getting close to the end of this challenge.  So I started to mount the various project parts together.  Here is a picture of the main unit:     I have built the main unit on a prototype board, which I have placed in a project enclosure that I then mounted in on top of a bicycle helmet.  It is not really limited to bicycle helmets; it can be placed on any sports helmet, and with a custom PCB design it can ...
I am back with another update on my "Wearable Sudden Impact and Health Monitor" project.   In my previous update I showed how I improved my Android app by adding a graph that will display the real time ECG measurement.   That time the graph was functional but the hardware and firmware for capturing the ECG was not done yet.   So I started to experiment with the Analog Devices AD8232 evaluation board, which I found extremely easy to setup and use.  In only a few minutes ...
Hello Everyone, this is another update on my "Wearable Sudden Impact and Health Monitor" project.   In my previous update I showed how I connected the Analog Devices EVAL-ADXL375Z module to an Arduino nano and how I measured a physical impact using a small app that I wrote in Android Studio.  This app received the acceleration x, y, and z axis recordings of the ADXL375 accelerometer and it converts them into G units and displays them the screen.   Interestingly, as it has been m ...
Hello Everyone, here I am back with another update on my "Wearable Sudden Impact and Health Monitor" project.  After receiving the materials and playing a little with the Analog Devices ADXL362 and ADXL375 evaluation kits, as I mentioned in my previous blog post, I started to work on my project.  So I took the Analog Devices module EVAL-ADXL375Z and I connected it through SPI interface to an Arduino nano board.  Here is a picture of the setup:     The ADXL375 modules ...
Here is another update on my wearable sudden impact and health monitor project.  The box with the materials for this challenge came; thank you Analog Devices, Tektronix, and Electrolube.     I was very excited, so I opened the box, I took out the contents, and I put them on the floor for a “group” picture.     I was taking pictures admiring all the evaluation modules and thinking which one to start with first, until the dog found me and I had to quickly ...
This is a short update: I am still waiting for the materials, so I looked into what I can do with what I have so far.  After playing with the transmitter and receiver as I described in my previous update I decided to look into the wireless communication protocol and the user interface software application.  Being familiar with Python I put together a python script that would read the data from an Arduino Uno board and display it on a panel.  I then started to make it a little more ...
Some of my ordered parts started to arrive, which made me happy and enthusiastic to start doing some work.  My first experiment tried to make a radio link connection between a QAM-TX1 transmitter and a QAM-RX2 receiver.  QAM-TX1 is a complete transmitter hybrid module that operates at 433MHz and it is specified to handle TTL/CMOS data up to 3kHz.  The other module, QAM-RX2 is a complete RF receiver operating also at 433MHz and which provides TTL/CMOS output.   Here is th ...
Another short update: I am still waiting for the materials, so I haven’t been able to do much progress this week.  I continued to read through datasheets and application notes for the Analog Devices modules.  I started also to look into data communication protocols for linking sensors with processing unit and send data to a tablet or smartphone.  So this was mainly reading and thinking without specific outcomes, so there is not much I can talk about it.   I look forwar ...
Here is a short update on my project: I haven’t received the materials yet, so I spent most of the time reading the datasheets of the Analog Devices accelerometer sensors and the other modules that I will be working with.  Besides this I worked on my parts order list trying to estimate what I need.  I spent many hours on Newark/Element14 Store searching for various components that I could use for communication between modules and host.  Finally I came up with a list and I su ...
First I would like to express thanks to Element14 and Analog Devices for selecting me as a finalist of the Sudden Impact Design Challenge.  I feel fortunate and honored to be one of the fifteen people selected for this challenge.    What I like the most about this challenge is that it focuses on protecting the health of people involved in sport activities at all levels from professional athletes all the way down to our kids playing sports in high-school and middle-school.  ...