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Miniaturized smart self-calibration electronic pointing method and system

  • US 8,311,757 B2
  • Filed: 08/14/2008
  • Issued: 11/13/2012
  • Est. Priority Date: 08/14/2007
  • Status: Active Grant
First Claim
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1. A self-calibration electric pointing device, comprising:

  • a sensors/actuator assembly wherein further comprises;

    a 2-axis DTG (Dynamically Tuned Gyro) for sensing the earth rate and said device angular motion;

    a first accelerometer;

    a second accelerometer with said first accelerometer for sensing gravity; and

    an indexing device carrying said 2-axis DTG, said first accelerometer, and said second accelerometer for real-time multiple position sensor calibration, wherein said indexing device moves said 2-axis DTG, said first accelerometer, and said second accelerometer when said system is starting or during said system operation for sensor calibration, wherein said sensor calibration is a two-position calibration that said indexing device only needs to stop at two points from an original point to a stop point to complete said sensor calibration;

    a sensor interface circuits; and

    a computation platform electrically connected with said sensors/actuator assembly by said sensor interface circuits for processing measurement from said sensors/actuator assembly for pointing.

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