Touch-Triggered Tilt Reference for Remote Mobile Terminal Control
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Solution Overview
Problem
Operators of mobile terminals face difficulties in determining the absolute angle for remote driving of moving bodies, leading to variability in operability due to differences in wrist movement and holding posture among individuals.
Innovation Solution
A mobile terminal system with a communication device, touch panel, and processor that detects the presence of an operator's touch and determines a reference angle for tilting, generating a control signal for the moving body based on the tilt angle during a control validity period, allowing for improved operability in remote driving.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a fixed reference angle (e.g., horizontal tilt angle) is used for remote operation, then the system structure is simple, but the operability varies among operators due to differences in wrist movement and holding posture
Solution Approach 1:
The reference angle is dynamically determined based on the operator's touch action rather than being a fixed horizontal angle. When the operator touches the touch panel, the current tilt angle is captured as the reference angle, allowing the system to adapt to each operator's natural holding posture and wrist movement characteristics, thereby improving operability without significant complexity increase
Solution Approach 2:
The system automatically determines the reference angle based on the operator's own touch action and holding posture, eliminating the need for manual calibration or preset reference angles. The operator's natural interaction with the device serves to establish their own reference frame, making the system self-adapting to individual differences
2Ease of operation
If the reference angle is determined at the time of touch detection, then the operability is improved for all operators, but the control system becomes more complex
Solution Approach 1:
The reference angle is determined in advance at the moment of touch detection, before the actual tilt operation begins. This preliminary establishment of reference allows the operator to perform intuitive tilt movements without needing to calculate or know the absolute angle, simplifying the operator's task while requiring the processor to implement touch-triggered reference angle determination
3Speed
If the control validity period is extended from touch detection, then the control responsiveness is improved, but the control precision may be reduced due to continued touch
Solution Approach 1:
The control process is segmented into distinct phases: touch detection phase (where reference angle is established) and control execution phase (where tilt angle is measured relative to reference). This segmentation allows the system to maintain both responsiveness (continuous control during touch) and precision (reference-based measurement) by treating these as separate but connected functions
Data Source
AI summary
A mobile terminal is operated by an operator to remotely support a moving body, and includes a communication device, a touch panel, and a processor. A motion of the moving body is controlled in accordance with an operation of the operator tilting the mobile terminal while touching the touch panel. The processor is configured to: determine, as a reference angle in a specific rotation direction of the mobile terminal, a tilt angle in the specific rotation direction at a time point of detection of a touch by the operator on the touch panel; generate a control signal for the motion based on the reference angle and the tilt angle in the specific rotation direction during a control validity period in which the touch is continued from the time point of the detection; and transmit the generated control signal to the moving body via the communication device.