Remote Control System Using Segmented Distance Detection
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Solution Overview
Problem
Existing remote control systems for devices like vehicle doors struggle with improving user convenience due to restrictive sensor detection areas and potential unintentional control activations.
Innovation Solution
A remote control system that uses a sensor to output distance information for two objects within a detection area, allowing operation control only when specific conditions are met, such as changes in distance corresponding to object entries and monotonic decreases followed by increases in distance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the sensor detection area is expanded to improve user convenience, then the ease of operation is improved, but the risk of unintentional control activation increases
Solution Approach 1:
The detection area is divided into multiple sub-areas (first detection area and second detection area). The control unit requires detection of specific patterns across these segmented areas (e.g., detecting an object in the first area while not detecting it in the second area, or vice versa). This segmentation allows the system to distinguish between intentional user actions and accidental detections, enabling a larger overall detection area without increasing unintentional activation risk.
Solution Approach 2:
The control unit continuously monitors detection signals from the sensor and compares them against predefined control conditions. The system provides feedback by evaluating whether the detection pattern matches the expected intentional action pattern before executing control. This feedback mechanism ensures that even with an expanded detection area, only patterns corresponding to intentional user actions trigger control activation.
2Reliability
If the sensor detection area is restricted to prevent unintentional control activation, then the reliability is improved, but the ease of operation deteriorates
Solution Approach 1:
Instead of restricting the overall detection area, the system segments it into multiple sub-areas with different functions. The first detection area and second detection area can be spatially separated but collectively cover a larger region. By requiring specific detection patterns across these segments (e.g., asymmetric detection between the two areas), the system maintains high reliability while effectively utilizing the expanded detection coverage for improved user convenience.
3Measurement precision
If multiple sensors are used to improve detection accuracy, then the measurement precision is improved, but the device complexity increases
Solution Approach 1:
The detection area is segmented into multiple sub-areas that can be covered by a single sensor or multiple sensors. When multiple sensors are used, each sensor monitors specific sub-areas, and the control unit integrates information from all sensors to determine whether control conditions are met. This segmented approach improves detection accuracy through multiple measurement points while managing complexity by assigning specific monitoring responsibilities to each sensor and using a unified control logic.
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 configuration enhances user convenience by allowing more flexible sensor placement and reducing unintentional control activations, while maintaining accurate remote control operations based on user actions.
Implementation Method 1
a sensor (11) configured to output distance information indicating a first distance (D1) to a first object located in a detection area (A) and a second distance (D2) to a second object located in the detection area
Data Source
AI summary
A sensor outputs distance information indicating a first distance to a first object located in a detection area and a second distance to a second object located in the detection area. A control device allows an operation control of a device to be controlled based on a fact that the distance information satisfies prescribed conditions that include: i) a condition that the first distance and the second distance exhibit changes corresponding to entries of the first object and the second object into the detection area; and ii) a condition that one of the first distance and the second distance monotonically decreases and then monotonically increases while the other one of the first distance and the second distance maintains a first value.