Triboelectric Sensor Contact Reset for Stable Initial Detection
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Solution Overview
Problem
Existing contact and separation sensors face challenges in detecting initial contact states due to charge degradation on the insulator surface over time, leading to unstable initial output and reduced detection accuracy.
Innovation Solution
A sensor system comprising an electrode, an insulator, a pressure receiver, and a pressure imparting unit, where the pressure receiver is positioned opposite to the electrode, and the pressure imparting unit presses the insulator towards the electrode at a different location, enabling contact and separation charging to generate power and improve signal output by maintaining the insulator and electrode in a contact or separated state.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the insulator surface charge is allowed to degrade naturally over time, then the device structure remains simple, but the initial output detection accuracy deteriorates
Solution Approach 1:
The patent applies preliminary action by using the pressure imparting unit to proactively restore the insulator surface charge before detection accuracy deteriorates. The pressure unit presses the insulator against the electrode to regenerate charge through contact charging, ensuring the insulator is ready for accurate detection without waiting for charge degradation to occur naturally.
Solution Approach 2:
The system implements self-service by using the pressure imparting unit to automatically restore the insulator's charge when needed. The insulator serves itself by generating charge through contact charging with the electrode when pressed, eliminating the need for external charging mechanisms or manual intervention.
2Reliability
If the insulator and electrode are kept in continuous contact to maintain charge, then detection stability improves, but the ability to detect separation events is reduced
Solution Approach 1:
The patent applies dynamics by making the contact state between the insulator and electrode changeable rather than fixed. The pressure imparting unit dynamically adjusts the contact state by pressing the insulator against the electrode when needed to restore charge, then allowing separation for detection events. This dynamic control enables the system to adapt between maintaining charge and detecting separation events.
3Measurement precision
If a pressure imparting unit is added to restore insulator charge, then initial output detection accuracy improves, but device complexity increases
Solution Approach 1:
The pressure imparting unit serves multiple functions: it restores the insulator charge through contact charging, maintains detection accuracy, and can potentially trigger detection events itself. This multi-functionality justifies the added complexity by providing both charge restoration and detection capabilities in a single component.
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
The sensor system enhances the initial rise of output detection by ensuring the insulator and electrode remain in a contact or separated state, improving detection accuracy and stability over time, even after prolonged standing periods.
Implementation Method 1
The insulator generates power by contact charging or separation charging with respect to the electrode, to output the power as a signal.
Implementation Method 2
The insulator generates power by contact charging or separation charging with respect to the electrode, to output the power as a signal.
Data Source
AI summary
A sensor includes an electrode, an insulator, a pressure receiver, and a pressure imparting unit. The insulator is disposed at a position facing the electrode and away from the electrode. The pressure receiver is disposed on a surface of the insulator on a side opposite to the electrode. The pressure imparting unit presses a part of the insulator toward the electrode at a position different from the pressure receiver to contact the insulator with the electrode. The insulator generates power by contact charging or separation charging with respect to the electrode, to output the power as a signal.