Capacitive Rocker Assembly Using Ratio Sensing for Precise Control
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Solution Overview
Problem
Existing rocker apparatuses face challenges in achieving high control accuracy due to environmental factors such as temperature and humidity affecting capacitance, which impacts their performance in unmanned aerial vehicles and e-sports games.
Innovation Solution
A rocker apparatus with a capacitive sensing assembly comprising first, second, and third electrode pieces forming capacitors, where the capacitance changes with the rocker assembly's swing, and a control assembly to detect the capacitance ratio, minimizing environmental impact.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If traditional single capacitor sensing is used, then the device structure is simple, but the control accuracy is affected by environmental factors like temperature and humidity
Solution Approach 1:
The patent changes the sensing parameter from absolute capacitance value to capacitance ratio. By using the ratio of capacitance changes between the first and second capacitors (ΔC1/ΔC2), the system eliminates the influence of environmental factors such as temperature and humidity that affect both capacitors equally, thereby improving measurement precision without requiring complex environmental compensation circuits
Solution Approach 2:
The patent introduces a reference capacitor (the second capacitor) as an intermediary to compensate for environmental effects. This reference capacitor experiences the same environmental conditions as the sensing capacitor but does not experience the rocking motion, allowing the system to separate and eliminate environmental noise from the measurement signal through ratio calculation
2Measurement precision
If capacitance detection is used, then the control position can be detected, but environmental factors like temperature and humidity affect the capacitance values
Solution Approach 1:
The patent converts the harmful effect of environmental factors into a beneficial reference signal. By designing the second capacitor to experience the same environmental conditions without experiencing the rocking motion, the environmental effects become a common-mode signal that can be eliminated through ratio calculation, turning what was previously noise into a useful compensation reference
Solution Approach 2:
The patent transforms the measurement parameter from absolute capacitance (which is sensitive to environmental factors) to capacitance ratio (which is immune to environmental factors). The control position is determined by the ratio ΔC1/ΔC2 rather than individual capacitance values, thereby eliminating temperature and humidity influences on position detection accuracy
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
Improves control accuracy by detecting capacitance ratio changes independently of environmental factors, enhancing precision in unmanned aerial vehicle and e-sports game control.
Implementation Method 1
a first facing spacing is provided between the first electrode piece and the second electrode piece to form a first capacitor; and a second facing spacing is provided between the first electrode piece and the third electrode piece to form a second capacitor
Data Source
AI summary
Disclosed are a rocker apparatus and a handle remote control. The rocker apparatus includes a capacitive sensing assembly, a rocker assembly, and a control assembly. The capacitive sensing assembly includes a first electrode piece, a second electrode piece and a third electrode piece, the second electrode piece and the third electrode piece are provided on a same side of the first electrode piece; a first facing spacing is provided between the first electrode piece and the second electrode piece to form a first capacitor; and a second facing spacing is provided between the first electrode piece and the third electrode piece to form a second capacitor; the control assembly is electrically connected to the capacitive sensing assembly, and the electric control board is configured to output corresponding position information based on a ratio change of the capacitance of the first capacitor to the capacitance of the second capacitor.