New Cost Effective GPS Aided Dead Reckoning Navigation Module

This innovative product can operate accurately with intermittent GPS signals. When GPS data is available, the dead reckoning sensors are calibrated continuously and the two data sources are blended into a composite real time position data output. If GPS data is unavailable dead reckoning takes over. In Dead Reckoning mode, position accuracy of 2% of distance travelled is achievable.

Patented motion classification algorithms analyse walking motion, and compensate when the user is running or in semi static mode. Automatic compass orientation algorithms provide accurate azimuth information when the user is upright or prone. Gyros are incorporated to compensate for transient magnetic and accelerations that could interfere with compass operation. A barometric altimeter provides vertical position accurate to 1.5 meter for discrimination between floors of a building.

This versatile device weighs only 25 grams and measures 50.8 x 50.8 x 12.7mm, ideal for mounting on the user’s torso, with no additional sensors required. Power consumption is less than 0.5 watt at 2.8 to 5.2 Volts DC power. Sensors include 3 gyros, 3 accelerometers and 3 magnetometers and operate accurately within a temperature range of -40 to +85 degrees C.

Applications primarily include personnel tracking such as Fire, Police, Security and Military, real-time waypoint navigation, disaster relief operations, tunnels etc, but the DRM 4000 has uses in the Manufacturing, Processing and Engineering Industries