Patent ID: 6522992
Filing Date: 2003-02-18
Classification: G01C

Abstract:
A core inertial measurement unit, comprising:an angular rate producer for producing X axis, Y axis and Z axis angular rate electrical signals; an acceleration producer for producing X axis, Y axis and Z axis acceleration electrical signals; an angular increment and velocity increment producer for converting said X axis, Y axis and Z axis angular rate electrical signals into three-axis digital angular increments and converting said X axis, Y axis and Z axis acceleration electrical signals into three-axis digital velocity increments; an Earth's magnetic field detector for producing Earth's magnetic field vector measurements; a position, attitude and heading processor connected with said angular rate producer, said acceleration producer and said Earth's magnetic field detector, so as to use said three-axis digital angular increments, three-axis digital velocity increments and said position, attitude and heading angle measurements to compute motion measurements including position, attitude and heading angle measurements; a communication module connected with said position, attitude and heading processor for providing external systems with said motion measurements, including said position, attitude and heading angle measurements, of said core inertial measurement unit; and a LCD display module connected with said position, attitude and heading processor for providing a display of said motion measurements of said core inertial measurement unit in terms of position, velocity, and attitude data; wherein said position, attitude, and heading processor is a DSP chipset arranged on a control board; wherein said communication module is interfaced with said DSP chipset; wherein said Earth's magnetic field detector is interfaced with said DSP chipset through an Earth's magnetic field detector interface circuit of an ASIC chip and arranged on said control board; wherein said LCD display module is interfaced with said DSP chipset through a LCD interface circuit of said ASIC chip and arranged on said control board.