Static Charge Sensor Array for High-Resolution Wide-Area Scanning
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Solution Overview
Problem
Current static electricity distribution measuring devices face limitations in measuring electrostatic charge distribution at high spatial resolution over a wide range quickly, as they require scanning point by point, which is time-consuming and impractical for manufacturing processes.
Innovation Solution
A static electricity distribution measuring device with a detection unit equipped with sensors that move relative to the measurement subject, a reference distance measuring unit, a distance adjustment unit, a vibrating unit, and a calculation unit, allowing for continuous scanning and accurate measurement of electrostatic charge distribution across a wide area with high spatial resolution.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If point-by-point scanning measurement is used, then measurement precision is improved, but measurement time increases and productivity decreases
Solution Approach 1:
The measurement device divides the measurement surface into multiple regions by arranging multiple sensors in an array configuration. Each sensor independently measures electrostatic charge at its specific location, enabling simultaneous multi-point measurement across the entire surface rather than sequential point-by-point scanning.
Solution Approach 2:
The invention transitions from one-dimensional sequential scanning to two-dimensional parallel measurement by arranging sensors in a matrix array. This dimensional change allows the system to capture spatial distribution information across the entire measurement surface simultaneously, achieving both high spatial resolution and rapid measurement.
2Area of stationary object
If multiple sensors are arranged in array, then measurement coverage area increases, but device complexity increases
Solution Approach 1:
The control unit performs multiple functions: it simultaneously controls the array of sensors, processes signals from all sensors, calculates electrostatic charge amounts, and generates measurement results. This multi-functionality consolidates what would otherwise require separate systems into a single integrated unit, reducing overall device complexity.
Solution Approach 2:
The invention combines multiple sensors, signal processing circuits, control logic, and calculation functions into an integrated measurement system. By merging these components into a unified device with a single control unit, the system achieves wide measurement coverage without proportionally increasing operational complexity.
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 rapid and accurate measurement of electrostatic charge distribution at high spatial resolution over a wide range, improving manufacturing efficiency by reducing downtime and enhancing product quality.
Implementation Method 1
a plurality of sensors that detect potential changes generated by the distance to the surface of the measurement subject being changed
Implementation Method 2
a vibrating unit that causes the distance between the surface of the measurement subject and the surface of the detection unit to change upon a predetermined cycle
Data Source
AI summary
With prior art static electricity distribution measuring devices, there has been the problem that it has not been possible to measure the amount of electrostatic charge over a wide range at high spatial resolution and quickly.In the present invention, there are provided: a detection unit 20 in which a plurality of sensors, provided upon a surface, move relatively along the surface of an electrostatically charged subject 100 to be measured, and detect potential changes generated by the distance to the surface of the measurement subject being changed; a reference distance measuring unit that measures the distance between the surface of the measurement subject and the surface of the detection unit; a distance adjustment unit that adjusts that distance so that it becomes a reference distance that is determined in advance; and a vibrating unit that causes the distance between the surface of the measurement subject and the surface of the detection unit to change upon a predetermined cycle.