Removable Filter Circuit for Numerical Control Noise Immunity
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Solution Overview
Problem
Numerical control systems face high costs due to the need for numerous noise suppression parts to increase noise immunity, especially when multiple data communication apparatuses are connected in a daisy-chain mode, with noise issues often originating from specific sections in electric panels or power cables.
Innovation Solution
A numerical control system with removably attached filter circuits and error detection units that identify and replace only the necessary filter circuits at points of noise trouble, using unique IDs and noise immunity levels to determine which filters need replacement, thereby focusing noise reduction efforts on specific areas without expanding the entire system's cost.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a number of noise suppression parts are used in each data communication apparatus, then noise immunity is improved, but system cost increases
Solution Approach 1:
The patent applies local quality by making filter circuits removable and replaceable only at specific locations where noise problems occur. Instead of equipping all data communication apparatuses with fixed filter circuits, the system allows selective installation of filters only where needed, based on actual noise occurrence patterns. This resolves the contradiction by providing noise immunity locally rather than system-wide, reducing overall cost while maintaining reliability where required.
Solution Approach 2:
The patent implements dynamics by enabling filter circuits to be removably attached and detached from data communication apparatuses. This dynamic configuration allows the system to adapt to changing noise conditions - filters can be installed when noise problems occur and removed when not needed. This resolves the contradiction by making noise suppression capability flexible rather than static, optimizing the balance between reliability and cost.
2Reliability
If noise suppression parts are installed in all data communication apparatuses, then system reliability is improved, but the number of components and cost increase
Solution Approach 1:
The patent applies local quality by concentrating noise suppression capability only at specific apparatuses where noise problems are detected, rather than distributing filters across all data communication apparatuses. The removable filter design enables selective deployment based on actual noise occurrence, reducing the total quantity of filter components needed while maintaining communication reliability at critical points.
Solution Approach 2:
The patent implements self-service through the error detection unit that automatically identifies data transfer errors and pinpoints the location of noise interference. This self-diagnostic capability eliminates the need for manual inspection and systematic installation of filters throughout the entire system. Instead, the system serves itself by detecting problems and guiding filter installation only where necessary, reducing both the number of components and installation complexity.
3Reliability
If filter circuits are fixed in all data communication apparatuses, then noise immunity is ensured, but system cost and complexity increase
Solution Approach 1:
The patent implements dynamics by replacing fixed filter circuits with removable ones that can be attached or detached as needed. This dynamic approach allows the system configuration to change based on actual noise conditions rather than being statically determined during system design. The complexity is reduced because filters are only installed when noise problems occur, rather than being permanently configured in all apparatuses from the outset.
Solution Approach 2:
The patent applies segmentation by separating the filter circuit from the main data communication apparatus, making it an independent, removable component. This segmentation allows the filter to be independently managed, installed, and removed without affecting the core functionality of the data communication apparatus. This resolves the complexity issue by modularizing the noise suppression function, making the overall system configuration more flexible and manageable.
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 enhances noise immunity at specific points of failure while reducing overall system costs by targeting only necessary noise suppression components, rather than deploying multiple noise suppression parts across the entire system.
Implementation Method 1
a filter circuit removably attached to a connection unit for connection with the numerical controller or another data communication apparatus
Data Source
AI summary
In a numerical control system including a plurality of data communication apparatuses and a numerical controller that transmits and receives data to and from the data communication apparatuses, a filter circuit is removably attached to each of a connection unit of the numerical controller and connection units of the data communication apparatuses. By detecting an error information based on a data transfer error or the sign of the data transfer error, a filter circuit that needs to be replaced is specified. Thus, the noise immunity of only a required portion of the filter circuits is increased, as a result, it is possible to suppress the cost for noise reduction while increasing the noise immunity of the entire system.