Hand-Tracked Input Repositioning for Obstructed Operator Engagement
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Solution Overview
Problem
Operators face challenges in engaging with input devices for controlling repositionable arms and end effectors in autonomous and semiautonomous electronic devices, particularly when there is an obstructed or partially obstructed view, and the current position of the input device may not be ergonomically favorable for grasping.
Innovation Solution
A system and method that includes an input device, a hand detection system, and a control unit to detect the operator's hand and move the input device to a more ergonomic grasping position closer to the hand, while maintaining alignment with the associated end effector, using position and orientation cues to assist the operator in engaging with the input device.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If the input device is kept at a fixed position aligned with the end effector, then alignment is maintained but the operator cannot easily engage with the device when view is obstructed
Solution Approach 1:
The input device transitions from a fixed position to a dynamically repositionable one, allowing it to maintain alignment during operation while becoming accessible when needed. The repositionable arm enables smooth transitions between aligned operational positions and accessible engagement positions.
Solution Approach 2:
The system automatically repositions the input device based on operator needs detected through hand tracking or interaction patterns, without requiring the operator to manually adjust it. The device serves itself by anticipating when operator engagement will be needed and proactively moving to an accessible position.
2Ease of operation
If the input device is moved closer to the operator for better ergonomics, then operator engagement is improved but alignment with the end effector may be compromised
Solution Approach 1:
The repositionable arm allows the input device to dynamically adjust its position, enabling it to be close to the operator for ergonomic engagement while maintaining the capability to move to aligned positions for intuitive control. The system switches between these states based on operational context.
Solution Approach 2:
The system proactively moves the input device to an ergonomic position before the operator needs to interact with it, then maintains or returns to the aligned position when interaction is complete. This preliminary positioning ensures ergonomic benefits are realized without compromising alignment during actual control operations.
3Device complexity
If the input device remains stationary during operation, then system complexity is reduced but the operator must constantly adjust to reach it when it is in an optimal control position
Solution Approach 1:
The input device is equipped with a repositionable arm that enables automatic movement between positions. This dynamic capability replaces the need for manual operator adjustment, reducing the operational burden while adding only moderate mechanical complexity to the system.
Solution Approach 2:
The input device automatically repositions itself based on operational context and operator needs, eliminating the need for manual adjustment by the operator. The device monitors its own state and autonomously moves to appropriate positions, trading mechanical complexity for operational simplicity.
Data Source
AI summary
A system and method of assisting operator engagement with input devices includes an input device, a hand detection system, and a control unit. The control unit is configured to detect the hand of the operator using the hand detection system; in response to a trigger condition, command the input device to move from a first to a second position; and in response to a signal indicating an input provided by the operator to the input device, command a motion of an end effector associated with the input device. The second position is closer to a grasping position for the hand than the first position. In some embodiments, the control unit is further configured to, in response to the trigger condition, command the input device to move from a first to a second orientation. The second orientation is closer to a grasping orientation for the hand than the first orientation.