Balance Electrostatic Sensor Adaptive Ionization
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing balances face errors in weighing results due to electrostatic charges, particularly when measuring non-conductive samples or containers, as these charges interfere with the weighing process and are not effectively neutralized by existing ionization devices that produce air currents and have fixed ionization levels.
Innovation Solution
A balance equipped with an electrostatic sensor that detects and measures charge magnitude and polarity, triggering an ionization device to neutralize charges when exceeding predefined thresholds, with adjustable ionization duration and intensity based on humidity and container material, ensuring accurate weighing results.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If ionization devices are used to neutralize electrostatic charges, then weighing accuracy is improved, but air currents and fixed ionization levels cause new errors and inefficiency
Solution Approach 1:
The patent applies dynamics by making the ionization process adjustable and adaptive rather than fixed. The ionization device can be controlled to vary its operation based on detected charge levels, allowing dynamic optimization of neutralization effectiveness while minimizing unwanted air currents and matching ionization intensity to actual charge magnitude.
Solution Approach 2:
The patent implements feedback by using electrostatic sensors to detect charge levels on containers and automatically controlling the ionization device based on these measurements. This closed-loop system allows the balance to respond to actual electrostatic conditions, adjusting ionization application to achieve neutralization without excessive air currents or fixed-level errors.
2Productivity
If electrostatic charges are present on non-conductive samples or containers, then weighing process continues, but weighing results contain errors due to potential differences
Solution Approach 1:
The patent applies preliminary action by detecting electrostatic charges on containers before weighing begins and applying ionization neutralization in advance. This ensures that by the time measurement starts, the electrostatic charges have already been neutralized, preventing potential difference errors while allowing the weighing process to proceed without interruption.
3Ease of operation
If fixed amount of ionization charges is used, then ionization device operation is simplified, but neutralization effectiveness is insufficient for varying charge magnitudes
Solution Approach 1:
The patent makes the ionization device dynamic by allowing adjustment of ionization charge amount based on detected electrostatic charge levels. The system can adapt its operation to match the actual neutralization needs, improving effectiveness for varying charge magnitudes while maintaining operational simplicity through automatic control.
Solution Approach 2:
The patent uses feedback from electrostatic sensors to automatically adjust ionization charge application. The sensor detects charge magnitude and feeds this information back to control the ionization device, ensuring the appropriate amount of ionization charges are applied for each specific situation without requiring manual adjustment.
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 system provides accurate weighing by neutralizing electrostatic charges, preventing errors and ensuring reliable measurements, especially for high-resolution balances, by dynamically adjusting ionization according to charge levels and environmental conditions.
Implementation Method 1
an electrostatic sensor which is arranged so that electrostatic charges can be detected which reside on a load that is placed or about to be placed on the weighing pan
Implementation Method 2
a device for generating an ionized air stream, which includes an ionization device with at least two point electrodes
Data Source
AI summary
A balance (1, 101) has a weighing pan (4, 104) for receiving a load (5, 6, 25) to be weighed, and an electronic weighing module (27) which includes a measuring unit (28). The balance is equipped with an electrostatic sensor (10) which is arranged so that accumulated electrostatic charges which reside on the load can be detected as the load is placed or about to be placed on the weighing pan. The balance is operated by using the electrostatic sensor to detect electrostatic charges, transferring information on a value characterizing the magnitude of the detected electrostatic charges to the measuring unit, comparing the value against a threshold value, and triggering an action of the electronic weighing module based on the comparison.