Device and method for combining samples from an inertial measurement sensor cluster
AssigneeElbit Systems Ltd.
InventorsDekel Tzidon, Alex Braginsky
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Abstract
Device and method for providing inertial indications with high accuracy using micro inertial sensors with inherent very small size and low accuracy. The device and method of the invention disclose use of the cluster of multiple micro inertial sensors to receive from the multiple sensors an equivalent single inertial indication with high accuracy based on the multiple independent indications and mathematical manipulations for averaging the plurality of single readings and for eliminating common deviations based, for example, on measurements of the deviation of the single readings.
Claims18
An inertial measurement device comprising:
- at least one sensor cluster, the sensor cluster comprising a plurality of micro inertial sensors to sample movement with respect to at least one axis of a plurality of axes x, y and z;
- and
- a summing unit to receive samples from at least some of said plurality of sensors indicative of said movement with respect to said at least one axis and to sum said samples to an equivalent vector indicative of a sampled movement.
An inertial measurement method comprising:
- reading separate output of at least some of a plurality of micro inertial sensors of a sensor cluster;
- and
- combining the separate outputs to yield a single output of the sensor cluster.
Dependencies are inferred from the claim text.