Power Window Control Device Abnormality Confirmation Logic
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Solution Overview
Problem
Existing opening/closing body control devices face issues with abnormal position detection and signal interruptions, leading to inconveniences and safety risks during as-needed operations, as they fail to smoothly manage disturbances or component failures, potentially causing unintended window movements and pinching hazards.
Innovation Solution
The proposed solution involves an opening/closing body control device with a communication unit, control unit, pulse detection unit, and position detection unit, which records operations and determines abnormalities in position and signal integrity. It continues operations based on recorded data until confirmed abnormalities, ensuring safety by temporarily stopping or reversing motor direction when pinches are detected.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the control device stops operation immediately upon detecting an abnormality in opening/closing position or signal, then safety is improved, but user convenience deteriorates due to unintended interruptions in normal operations
Solution Approach 1:
The control device performs preliminary actions by recording operation content before abnormalities occur and preparing confirmation mechanisms in advance. When an abnormality is detected, the system first confirms whether it is a temporary or sustained abnormality before taking stopping action, ensuring safety while avoiding unnecessary interruptions to normal operations
Solution Approach 2:
The control device dynamically adjusts its response based on the duration and characteristics of the detected abnormality. For temporary abnormalities, the system maintains operation to preserve convenience, while for sustained abnormalities confirmed over time, the system stops operation to ensure safety, creating a dynamic decision-making process
2Ease of operation
If the control device continues operation despite detecting temporary abnormalities, then user convenience is maintained, but safety risk increases due to potential pinching hazards
Solution Approach 1:
The control device performs preliminary confirmation of the abnormality state by measuring its duration against a predetermined threshold before deciding whether to stop operation. This preliminary action distinguishes between temporary disturbances and sustained hazards, allowing the system to maintain operation during convenient temporary conditions while preventing unsafe sustained operations
Solution Approach 2:
The control device implements a feedback mechanism that continuously monitors the opening/closing position and signal status, comparing detected abnormalities against recorded operation content and predetermined thresholds. This feedback loop enables the system to make informed decisions about whether to continue or stop operation, balancing convenience and safety based on real-time conditions
3Reliability
If the control device implements comprehensive abnormality detection and confirmation mechanisms, then safety is improved, but device complexity increases
Solution Approach 1:
The control device simplifies complex safety logic by performing preliminary recording of normal operation content before abnormalities occur. This preliminary action creates a reference baseline that simplifies subsequent abnormality detection and confirmation processes, reducing the complexity of real-time decision-making while maintaining comprehensive safety checks
Solution Approach 2:
The control device creates a copy or record of normal operation content for comparison purposes. By storing this reference information, the system can efficiently detect deviations without implementing complex real-time analysis, simplifying the control logic while maintaining comprehensive abnormality detection capabilities
Data Source
AI summary
An opening/closing body control device continues an as-needed operation where the opening/closing body is controlled in response to the operation instruction signal even when an abnormality in an opening/closing position of the opening/closing body is detected, continues opening and closing the opening/closing body until it is determined that the abnormal state in the opening/closing instruction signal is confirmed even when an abnormality in the opening/closing instruction signal is detected during the as-needed opening/closing operation, and stops opening and closing the opening/closing body the abnormal state in the opening/closing instruction signal is confirmed. The confirmation time at the presence of the opening/closing position abnormality is shorter than that at the absence of opening/closing position abnormality.