How to capture motion with magnetic sensor?

[hewstone999]

Hey there,

Purpose:
I want to design and build a basic system that detects human movement using magnetic sensors. These sensor will be attached to the human body.

The problem that i have is that i dont understand how to build this system. I understand that you must have a magnetic sensor (Any suggests on which would be helpful) that connecs to a transmitter (again any information would be nice) that is then connected to the PC, where a software package will convert the signals from the transmitter into useful information.

So a basic overall of the structue is:

Sensor (Detects movement) ------> Transmitter ------>PC


Any ideas on how this could be acheived? also at low cost.

Thanks for your help in advance.

Rich

[99thpercentile]

I'm not sure what exactly you want to do, but I think this might be it. There is a video clip of this in use somewhere, but I can't find it.

Honrywell DRM®4000 Dead Reckoning Module

The DRM®4000 Dead Reckoning Module provides accurate position information for first responders and other people on foot in places that the global positioning system (GPS) is unable to reach. The small, easy-to-integrate unit contains ten sensors including three gyros, accelerometers and magnetometers as well a barometric altimeter to accurately deliver position location. The DRM®4000 uses patented motion classification algorithms to analyze walking motion and compensate for unique user kinematics. The DRM®4000 contains an internal Kalman filter for integrating onboard sensors and external GPS data. It nominally provides position data that is accurate to within 2% of the actual distance traveled by a user in environments without GPS. The unit can be directly interfaced to many GPS receivers and man-pack computers and includes capabilities for accurate field calibration.

http://www.magneticsensors.com/products.html