Inertial Gesture Control Isolation for Moving Vehicle Operators
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Solution Overview
Problem
Existing motion-induced control systems for unmanned vehicles face challenges when operators are in motion, as their hand/arm movements can interfere with accurate vehicle control, leading to motion-induced errors.
Innovation Solution
A motion identification system that uses inertial sensors to detect motion data from both a controller and an operator's torso, determining whether hand/arm movements are intended as vehicle control commands or errors by comparing the motion data and adjusting commands accordingly.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If motion-induced control systems are used to enable operators to control unmanned vehicles through hand gestures or motions, then the ease of operation is improved, but motion-induced errors occur when the operator is moving or riding onboard a vehicle, worsening the reliability of control
Solution Approach 1:
The patent introduces a torso inertial sensor as an intermediary device to measure the operator's body motion. This mediator allows the system to distinguish between intentional hand movements (commands) and unintentional body movements (errors), thereby resolving the reliability issue while maintaining ease of operation
Solution Approach 2:
The system implements feedback by continuously comparing hand controller motion data with torso inertial sensor data. When the two data streams show significant differences, the system identifies this as an error condition and adjusts or rejects the corresponding control commands, improving reliability without compromising the natural ease of operation
2Productivity
If inertial sensors are used to detect hand/arm movements for generating control commands, then the productivity of controlling unmanned vehicles is improved, but motion-induced errors interfere with accurate control when the operator is moving, worsening the measurement precision
Solution Approach 1:
The patent segments the motion detection function into two independent components: hand controller inertial sensors for detecting intentional commands and torso inertial sensors for detecting body motion. This segmentation allows the system to maintain high productivity by accepting all hand movements as potential commands while improving measurement precision by filtering out those caused by body motion
Solution Approach 2:
The torso inertial sensor acts as an intermediary reference that provides information about operator body motion. By comparing hand controller data against this intermediary reference, the system can accurately distinguish between intentional hand movements and movements caused by operator motion, thereby maintaining both productivity and measurement precision
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
The system effectively reduces motion-induced errors by accurately distinguishing between intended vehicle control commands and errors caused by operator movement, ensuring more reliable control of unmanned vehicles.
Implementation Method 1
The inertial sensor may be a second inertial sensor in the motion identification system that is being worn by an operator. The inertial sensor may measure the linear and angular acceleration(s), velocity (ies), and/or position(s) of a torso of the operator.
Implementation Method 2
The second motion data included in the motion identification system may also include a heading, measured using a magnetometer. Thus, the inertial sensor may include a magnetometer.
Data Source
AI summary
Methods and systems are described herein for detecting motion-induced errors received from inertial-type input devices and for generating accurate vehicle control commands that account for operator movement. These methods and systems may determine, using motion data from inertial sensors, whether the hand/arm of the operator is moving in the same motion as the body of the operator, and if both are moving in the same way, these systems and methods may determine that the motion is not intended to be a motion-induced command. However, if the hand/arm of the operator is moving in a different motion from the body of the operator, these methods and systems may determine that the operator intended the motion to be a motion-induced command to a vehicle.