Electric Winder Plug Detection to Prevent Retraction Damage
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Solution Overview
Problem
Improper user operations can cause the socket on the free end of a cable to drive the plug on a tool, leading to damage when the electric winder retracts the cable, as the plug is not properly disconnected before retraction.
Innovation Solution
An electric winder with a strain sensor and controller system that detects deformation caused by the plug insertion, preventing the reel from winding if the deformation exceeds a threshold, thus preventing the socket from driving the plug during retraction.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the electric winder retracts the cable without detecting plug insertion status, then the retraction operation is simple and fast, but the socket or plug may be damaged due to improper user operation
Solution Approach 1:
The strain sensor detects plug insertion status before the retraction operation begins. The controller checks the sensor signal and only permits retraction when the cable is confirmed to be disconnected, preventing damage before it can occur.
Solution Approach 2:
A strain sensor is introduced as an intermediary detection device between the user operation and the winder control system. The sensor converts mechanical deformation from plug insertion into an electrical signal that the controller can process to make safe operation decisions.
2Measurement precision
If the strain sensor continuously monitors the contact assembly, then the detection accuracy of plug insertion status is improved, but the energy consumption increases
Solution Approach 1:
The controller performs periodic detection of the strain sensor signal at specific moments (when retraction is requested or during operation) rather than continuous monitoring. This maintains detection accuracy when needed while minimizing energy consumption during idle periods.
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 damage to the socket and plug by ensuring the reel does not wind when the plug is not fully removed, enhancing the fault tolerance of the electric winder.
Implementation Method 1
the strain sensor is configured to detect a deformation of the contact assembly caused by the plug
Data Source
AI summary
The disclosure provides an electric winder and a method for controlling the same. The electric winder includes a winder body, a socket and a controller. When a plug is inserted into the contact assembly through the insertion hole, the strain sensor is configured to detect a deformation of the contact assembly caused by the plug, and send the deformation to the controller. The controller is configured to receive the deformation sent from the strain sensor. When the deformation is greater than a deformation threshold, the controller controls the drive mechanism to be in a stop state to prevent the reel from winding.