Adaptive Micro Opto Electromechanical Rotation Rate Sensor
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Solution Overview
Problem
Micro-opto-electromechanical rotation rate sensors face limitations in fully exploiting their dynamic range under varying input signal levels, particularly in conditions where mechanical stimuli change during missions, leading to suboptimal performance.
Innovation Solution
The implementation of discrete control loops and adaptive mechanisms within the Micro-opto-electromechanical rotation rate sensor (MOERRS) system, including mechanical, electronic, and optical control loops, allows for pre-mission and within-mission modifications to optimize the output signal within the dynamic range by adjusting excitation rates, electronic gains, and light exposure.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the sensor operates with fixed parameters, then the device complexity is reduced, but the sensor cannot optimally exploit the dynamic range under varying input signal levels
Solution Approach 1:
The patent implements dynamic adaptation mechanisms that allow the sensor parameters (excitation rate, electronic gain, optical exposure) to change in real-time based on input signal levels. This enables the sensor to optimally exploit its dynamic range under varying mechanical stimuli conditions, resolving the contradiction between fixed simplicity and adaptive performance.
Solution Approach 2:
The patent employs feedback control loops that continuously monitor the sensor output and adjust parameters accordingly. The feedback mechanism compares the actual output with the optimal range and modifies excitation rates, electronic gains, or light exposure to maintain optimal performance, thereby enabling dynamic range adaptation without excessive complexity.
2Measurement precision
If the sensor parameters are adjusted to optimize performance, then the measurement precision is improved, but the device complexity increases
Solution Approach 1:
The patent systematically adjusts key parameters including excitation rate, electronic gain, and optical exposure duration to optimize measurement precision. By changing these parameters dynamically based on input signal characteristics, the sensor achieves accurate rotation rate measurements across varying conditions while managing complexity through focused parameter optimization.
Solution Approach 2:
The patent implements pre-mission adaptation where sensor parameters are configured in advance based on expected operating conditions. This preliminary setup optimizes measurement precision for anticipated scenarios without requiring complex real-time adjustments, thereby improving accuracy while limiting complexity growth.
3Adaptability or versatility
If the sensor is modified autonomously during mission, then the adaptability is enhanced, but the ease of operation is reduced
Solution Approach 1:
The patent implements autonomous self-adjustment mechanisms where the sensor automatically modifies its parameters during mission based on real-time input signal levels. The system serves itself by detecting optimal operating conditions and adjusting excitation rates, electronic gains, or optical exposure without external intervention, thereby enhancing adaptability while maintaining ease of operation through automation.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This adaptive approach enhances the performance of the MOERRS by ensuring the output signal remains within optimal ranges, even under changing mechanical stimuli, thereby improving the sensor's ability to accurately measure rotation rates across varying conditions.
Implementation Method 1
The movement of the proof mass is monitored by an array of light sensitive photo-detectors attached to the VLSI component, as the shade affected by the proof mass, masking the light of an illumination source, changes in coverage in one or more dimensions
Implementation Method 2
Micro-electromechanical optical inertial sensing devices that measure rotation rate, typically make use of the Coriolis effect to detect rotation rate
Data Source
AI summary
A micro-opto-electromechanical rotation rate sensor (MOERRS) device, in which a rotation rate sensor is associated with peripheral circuitry. The magnitude of the output signal of the MOERRS is adaptable to correspond to a range of mechanical stimuli to which the sensor is sensitive, in order to accommodate the signal magnitude to the dynamic range available in the MOERRS device. The signal emanating from the rotation rate sensor is facilitated to exploit the dynamic range of said MOERRS device, by modifying some properties of one or more items on the MOERRS.