Weighing Device Filter Condition Prediction via Signal Waveform Simulation
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Solution Overview
Problem
Existing weighing devices cannot determine whether selected filter conditions are appropriate without actual weighing, affecting the accuracy of the weighing process.
Innovation Solution
A weighing device that predicts and generates waveforms of multiple filtering processes with different characteristics, allowing for visual comparison on a display unit to determine optimal filter conditions without actual weighing, ensuring accurate weighing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If multiple filtering processes with different characteristics are performed on the original signal, then the ability to determine appropriate filter conditions is improved, but the device complexity increases due to requiring prediction and generation of multiple waveforms
Solution Approach 1:
The control unit creates virtual copies of the weighing signal by predicting and generating waveforms that simulate the output of different filtering processes. These copied waveforms allow comparison of multiple filter characteristics without requiring multiple physical filtering systems, thus improving filter selection accuracy while avoiding proportional increases in device complexity.
Solution Approach 2:
The system performs preliminary prediction and generation of filtered waveforms before actual weighing operations. By pre-generating and displaying multiple candidate filter waveforms, the system allows users to select optimal filter conditions in advance, ensuring accurate weighing results without needing to trial multiple physical filter configurations.
2Productivity
If filter conditions are determined without actual weighing, then productivity is improved by reducing setup time, but measurement precision may be compromised without real weighing data
Solution Approach 1:
The control unit performs preliminary filtering simulations using the stored original signal to predict how different filters will affect the weighing signal. This preliminary action allows users to evaluate and select optimal filter conditions before actual weighing, reducing setup time while maintaining the ability to achieve precise measurements through informed filter selection.
Solution Approach 2:
The system provides visual feedback by displaying the predicted waveforms of different filtering processes on the display unit. Users can observe the effects of various filters on the waveform and make informed decisions about filter selection, ensuring that the chosen filter will produce accurate weighing results without requiring actual weighing trials.
Data Source
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AI summary
Provided is a weighing device in which it is possible to reliably determine appropriate filter conditions even without actually performing weighing. A weighing device 1 includes: a weighing cell 5 which weighs an article P and outputs an original signal corresponding to the weight of the weighed article P; a filter unit 9 which performs a filtering process on the original signal output from the weighing cell 5; a controller 15 which makes a waveform of a weighing signal subjected to the filtering process be displayed on a touch panel 17; and a storage unit 13 which stores at least one of the original signal and the weighing signal, wherein the controller 15 predicts and generates the waveforms of a plurality of weighing signals in a case of performing a plurality of filtering processes having different characteristics on the original signal or the weighing signal stored in the storage unit 13, and makes the waveforms of the plurality of weighing signals be displayed on the touch panel 17.