Vehicle Window Control Device with Adaptive Insertion Threshold
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Solution Overview
Problem
Existing vehicle window control systems face challenges in detecting foreign substances during remote-controlled closing operations, leading to reduced detection precision and potential failure to close the window completely, as the threshold settings either result in false negatives or excessive motor strain.
Innovation Solution
A control device that dynamically changes the insertion deciding threshold from a normal to a sensitive value when the engine is stopped, enhancing detection sensitivity, and automatically re-closes the window after a predetermined time if an insertion is detected, while also allowing for stepwise gentler threshold adjustments and limiting the number of closing operations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a gentle insertion threshold is used during remote control closing operations, then false positives are reduced, but detection precision of foreign substances is reduced
Solution Approach 1:
The patent applies dynamics by making the insertion threshold changeable based on operational context. The threshold is set to a first value during remote control closing operations to reduce false positives, and automatically switched to a second value when the controller detects that the opening/closing body has stopped or reversed, thereby adapting the detection sensitivity to the current operational state.
Solution Approach 2:
The patent implements parameter changes by dynamically adjusting the insertion threshold parameter based on the operational state of the opening/closing body. The controller monitors motor behavior (stopping or reversing) and automatically changes the threshold parameter from a first value to a second value, optimizing detection precision at critical moments while maintaining reliability during normal operation.
2Measurement precision
If the insertion is detected to stop the closing operation or carry out opening operation, then foreign substance detection is improved, but the window may be left in an opening state
Solution Approach 1:
The patent applies preliminary action by automatically initiating a second closing operation after a predetermined time elapses following detection of a foreign substance. This ensures that if the first closing operation was interrupted, the window will be closed in the subsequent operation, preventing it from being left in an opening state.
Solution Approach 2:
The patent implements feedback by monitoring the operational state of the opening/closing body and using this information to control threshold changes. When the controller detects that the opening/closing body has stopped or reversed during closing, the threshold is automatically changed to a second value, and after a predetermined time, another closing operation is initiated based on this feedback.
3Measurement precision
If a sensitive insertion threshold is used, then foreign substance detection precision is improved, but motor strain increases
Solution Approach 1:
The patent applies dynamics by making the insertion threshold adaptive rather than fixed. The threshold is set to a first value during remote control closing operations to reduce motor strain and false positives, and automatically switched to a second value only when the controller detects that the opening/closing body has stopped or reversed, thereby applying high sensitivity only when necessary.
Solution Approach 2:
The patent implements parameter changes by dynamically adjusting the insertion threshold parameter based on real-time monitoring of the opening/closing body's operational state. The controller changes the threshold from a first value to a second value when stopping or reversing is detected, optimizing the balance between detection precision and motor strain.
Data Source
AI summary
An opening/closing body control device has a controller that controls a driving operation of a motor for carrying out an operation for opening/closing an opening/closing body of a vehicle, a load detector that detects a load of the motor; a deciding part that compares a variation in the load detected by the load detector with a predetermined threshold, thereby deciding presence of insertion of a foreign substance into the opening/closing body during the operation for closing the opening/closing body, an engine state detector that detects a stopping state of an engine of the vehicle, a receiver that receives a closing command for the opening/closing body which is transmitted from a remote control machine, and a changing part that changes the threshold.