Capacitor Sensor Dual-Channel Distance and Contact Area Detection
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Solution Overview
Problem
Existing capacitor sensors can only detect the distance between a target object and a target metal segment, limiting their application range as they cannot detect the contact area between the two, which is crucial for advanced functionalities such as recognizing grip postures.
Innovation Solution
A capacitor sensor with two sensing channels, one operating in a first mode to detect distance and another in a second mode to detect contact area, using capacitance values to determine the presence and area of contact, enabling high-sensitivity detection and recognition of grip postures.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a single sensing channel is used to detect distance, then the device complexity is reduced, but the application range and measurement capabilities are limited
Solution Approach 1:
The sensing system is segmented into two distinct sensing channels: a first sensing channel for distance detection and a second sensing channel for contact area detection. Each channel operates independently with its own sensing electrode configuration, allowing simultaneous multi-parameter detection without interference, thus expanding application range while maintaining manageable complexity
Solution Approach 2:
The capacitor sensor is designed with multi-functionality by enabling a single sensor structure to perform both distance detection and contact area detection through two different sensing channels. The sensing electrodes can operate in different modes (first operation mode for distance, second operation mode for contact area), making the sensor universally applicable to various detection scenarios
2Loss of information
If only distance detection is implemented, then the device structure is simplified, but the ability to recognize grip postures is lost
Solution Approach 1:
The sensing system is segmented into two distinct sensing channels: a first sensing channel for distance detection and a second sensing channel for contact area detection. Each channel operates independently with its own sensing electrode configuration, allowing simultaneous multi-parameter detection without interference, thus expanding application range while maintaining manageable complexity
Solution Approach 2:
The second sensing channel acts as an intermediary that specifically detects contact area information between the target object and the target metal segment. By introducing this intermediate detection channel, the system can capture contact area data without interfering with the primary distance detection function, enabling grip posture recognition
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
Enables detection of both distance and contact area between a target object and a target metal segment, enhancing the sensor's application range and allowing for the recognition of grip postures with high sensitivity.
Implementation Method 1
capacitor sensor...obtain a first target sensing value...indicate a distance between a target object and a target metal segment...obtain a second target sensing value...indicate a contact area
Data Source
AI summary
A capacitor sensor includes a first sensing channel and a second sensing channel. The first sensing channel operates in a first operation mode to obtain a first target sensing value. The first target sensing value is used to indicate a distance between a target object and a target metal segment. The second sensing channel operates in a second operation mode to obtain a second target sensing value. The second target sensing value is used to indicate a contact area between the target object and the target metal segment.