Ionizer Bar Self-Sensing for Static Neutralization
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Solution Overview
Problem
Existing neutralization systems require external sensors for optimizing ionization, which are costly and impractical in hazardous environments, and require extensive calibration data collection, making them inefficient and cumbersome.
Innovation Solution
A method where the ionizer bar itself senses current flow and compares it to expected values, adjusting output properties to neutralize charges without the need for external sensors, using interleaved sampling and operation periods to optimize neutralization.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If external sensors are used to detect residual charge on the target web, then neutralization optimization is achieved, but system cost and complexity increase significantly
Solution Approach 1:
The ionizer bar is designed to perform multiple functions: it both generates ions for neutralization and senses current flow to detect target charge. By making the ionizer bar multi-functional, the patent eliminates the need for separate external sensors, thereby reducing system complexity and cost while maintaining the ability to optimize neutralization through accurate charge detection
Solution Approach 2:
The ionizer bar senses its own operating conditions and the target's charge status through current flow measurements. This self-service capability allows the system to automatically adjust and optimize its neutralization output without requiring external monitoring equipment, simplifying the overall system architecture
2Manufacturing precision
If extensive calibration data collection is performed for multiple operating states, then ionizer performance optimization is achieved, but time consumption and memory requirements increase
Solution Approach 1:
Instead of collecting comprehensive calibration data for all possible operating states, the patent uses real-time current flow sensing during actual operation to determine the nearest calibration data point. This partial action approach collects only the necessary calibration information dynamically, significantly reducing the time and memory required compared to exhaustive pre-calibration
Solution Approach 2:
The patent performs preliminary calibration data collection for a limited set of representative operating states, then uses real-time current measurements to interpolate or select the nearest pre-collected data point. This preliminary action reduces the burden of extensive real-time calibration while still providing optimized performance across varying operating conditions
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
This approach eliminates the need for external sensors, reduces equipment costs, and simplifies calibration by using the ionizer bar as a sensor, allowing for efficient and self-regulating neutralization of static charges.
Implementation Method 1
Electrical ionizers generate air ions by intensifying an electric field around a sharp point until the field overcomes the dielectric strength of the surrounding air. Negative corona discharge occurs when electrons are flowing from the electrode into the surrounding air. Positive corona discharge occurs as a result of the flow of electrons from the air molecules into the electrode.
Implementation Method 2
A method where the ionizer bar itself senses current flow and compares it to expected values, adjusting output properties to neutralize charges
Implementation Method 3
As ions flow through the air, they are attracted to oppositely charged particles and surfaces. Neutralization of electrostatically charged surfaces can be rapidly achieved through this process.
Data Source
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AI summary
A method for optimizing performance of a static neutralizing power supply coupled to a controller and configured to provide an output to at least one ionizer includes, (a) during a first time period, sensing a current flow to the at least one ionizer, and (b) comparing, in the controller, an expected current flow to the sensed current flow. A difference between the expected and sensed current flows is proportional to a charge on an object to be neutralized proximate the at least one ionizer. The method further includes (c) adjusting, by the controller and based on the comparison, one or more properties of the output to the at least one ionizer to neutralize the charge on the object during a second time period following the first time period, and (d) periodically repeating steps (a)-(c) for successive first and second time periods.