Vehicle Door Controller Using Signal Strength and Motion Synchronization
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Solution Overview
Problem
Conventional systems for controlling vehicle opening/closing bodies often malfunction by opening unnecessary doors, lacking effective synchronization between user intent and signal reception strength changes.
Innovation Solution
A controller with an imaging unit, reception unit, and opening/closing control unit that synchronizes the opening operation of vehicle doors with changes in signal strength received from a mobile terminal, using motion detection and guidance images to ensure accurate operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional systems use simple signal reception to control opening/closing bodies, then the system is simple to operate, but malfunctions occur when unnecessary doors are opened
Solution Approach 1:
The system uses reception strength change information as feedback to verify whether a detected motion corresponds to a valid opening command. The control unit compares the reception strength change against predetermined thresholds to confirm user intent, preventing false activations while maintaining system reliability
Solution Approach 2:
The reception strength change acts as an intermediary verification mechanism between the motion detection and the door opening execution. This intermediate check ensures that only motions accompanied by appropriate signal strength changes trigger door opening, eliminating false positives without requiring complex additional sensors
2Reliability
If the system uses multiple verification methods to prevent malfunctions, then reliability improves, but the device complexity increases
Solution Approach 1:
The imaging unit serves multiple functions: it detects motion of the subject, determines the type of motion, and provides visual guidance to users. The reception unit similarly performs both signal detection and verification functions. This multi-functionality reduces the need for separate dedicated components, maintaining reliability while controlling complexity
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
Prevents malfunctions by accurately controlling door openings based on user motion and signal strength changes, enhancing security and convenience.
Implementation Method 1
a reception unit that receives, from a first terminal that transmits a first signal of a predetermined strength, the first signal
Implementation Method 2
an imaging unit that acquires an image of a peripheral area of an opening/closing body provided in a main body part
Data Source
AI summary
A controller includes an imaging unit, a reception unit, a detection unit, and an opening/closing control unit. The imaging unit acquires an image of a peripheral area P of an opening/closing body provided in a main body part (vehicle body). The reception unit receives, from a first terminal that transmits a first signal of a predetermined strength, the first signal. The detection unit detects a motion of a subject included in the image. The opening/closing control unit controls an opening operation of the opening/closing body when a change in a reception strength of the first signal received by the reception unit represents a change synchronizing with the detected motion of the subject.