Sampling and control circuit board for an inertial measurement unit
First Claim
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1. An apparatus, comprising:
- a circuit board configured to serve as a control and sampling interface between an inertial measurement device, a local oscillator, and an external trigger pulse, the circuit board configured to;
receive the external trigger pulse and time align the local oscillator to initiate sampling of the inertial measurement device for data at precise time intervals based on pulses from the local oscillator, whereinthe sampled data is synchronized by the circuit board with a navigation system via the external trigger pulse.
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Abstract
A circuit board that serves as a control and sampling interface to an inertial measurement unit (“IMU”) is provided. The circuit board is also configured to interface with a local oscillator and an external trigger pulse. The circuit board is further configured to receive the external trigger pulse from an external source that time aligns the local oscillator and initiates sampling of the inertial measurement device for data at precise time intervals based on pulses from the local oscillator. The sampled data may be synchronized by the circuit board with other sensors of a navigation system via the trigger pulse.
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Citations
20 Claims
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1. An apparatus, comprising:
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a circuit board configured to serve as a control and sampling interface between an inertial measurement device, a local oscillator, and an external trigger pulse, the circuit board configured to; receive the external trigger pulse and time align the local oscillator to initiate sampling of the inertial measurement device for data at precise time intervals based on pulses from the local oscillator, wherein the sampled data is synchronized by the circuit board with a navigation system via the external trigger pulse. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. An apparatus, comprising:
a circuit board configured to serve as a control and sampling interface between with an inertial measurement device, a local oscillator, and an external trigger pulse, the circuit board configured to; receive the external trigger pulse and time align the local oscillator, and sample the inertial measurement device for data at time intervals based on pulses from the oscillator. - View Dependent Claims (10, 11, 12, 13, 14, 15)
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16. A system, comprising:
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an inertial measurement unit; a local oscillator; a main processor; and a circuit board configured to serve as a control and sampling interface between with the inertial measurement unit, the local oscillator, an external trigger pulse, and the main processor, the circuit board configured to; receive the external trigger pulse and time aligns the local oscillator, and sample the inertial measurement device for data at time intervals based on pulses from the oscillator, wherein the sampled data is synchronized by the circuit board with a navigation system via the trigger pulse, and the main processor is configured to perform intensive processing for the navigation system. - View Dependent Claims (17, 18, 19, 20)
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Specification