iPhone 4 eHealth Applications
iPhones represent a great leap forward in wearable technology that can transcend the technology barrier. It is widely used by the young and old alike and hence is an ideal monitoring device for health applications. Not only are people more likely to wear these devices as monitors but it can also be a survey instrument and reminder tool to assist in compliance with medical rehabilitation and research programmes.>
The accelerometer and gyroscope sensors allow the monitoring of acceleration in x,y,z and angular velocity around x,y,z. This gives 6 degrees of freedom which is perfect for monitoring human activity. These sensors can have sample rates up to 100Hz which gives a unique insight into the activity which cannot be easily seen by the naked eye if at all. The GPS and compass allows position and orientation to be obtained at 1Hz which is useful for monitoring position around a particular environment.
The iPhone is good to measure human activity and determine activity levels which have applications to
- obesity due to inactivity
An example of activity capture can be seen in the following image which shows a person walking for 50 metres, jumping, and the walking another 50m, followed by another set of jumps.