Extension Module Calibration Memory for Swappable Motion Control I/O
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Solution Overview
Problem
In industrial motion control, extension modules require calibration data storage, leading to high hardware costs and inflexibility, as they must be matched with specific main modules, limiting user convenience and requiring repeated calibration when replacing modules.
Innovation Solution
An extension module design that shares an ADC sampling circuit with the main module, allowing independent storage of calibration data and enabling flexible module replacement without repeated calibration, by using a signal processing circuit and memory to store module-specific calibration data.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If calibration data is stored on the main module or extension module in a fixed matching mode, then calibration accuracy is maintained, but user flexibility and module replaceability deteriorate
Solution Approach 1:
The calibration data storage is segmented into two independent parts: extension module calibration data stored in the extension module's memory and main module calibration data stored in the main module's memory. This segmentation allows each module to be calibrated and stored independently, enabling free replacement while maintaining overall calibration accuracy through the combination of both calibration datasets.
2Adaptability or versatility
If an additional ADC sampling circuit is implemented on the extension module for independent calibration data storage, then module flexibility improves, but hardware cost increases
Solution Approach 1:
The ADC sampling circuit is extracted from the extension module and centralized in the main module. The extension module only retains the signal conditioning circuit and port protection circuit, while calibration data is stored independently in the extension module's memory. This extraction eliminates redundant hardware in the extension module while maintaining module flexibility and independent calibration capability.
3Measurement precision
If extension modules are matched in a fixed mode with specific main modules, then calibration accuracy is ensured, but manufacturing cost and usage cost increase
Solution Approach 1:
The main module's ADC sampling circuit is designed with universal compatibility to work with multiple types of extension modules. Each extension module stores its own calibration data independently, allowing any extension module to be paired with any compatible main module without requiring fixed matching, thereby reducing manufacturing costs and inventory complexity while maintaining calibration accuracy.
Data Source
AI summary
Provided is an extension module for independently storing calibration data, including: a first interface, adapted to receive a first external input signal; a second interface, adapted to output the first output signal of the extension module; a signal processing circuit, connected between the first interface and the second interface; and a first memory, the first memory storing first calibration data, and the first calibration data being associated with the extension module. Furthermore, also provided is a component using the above extension module, and a component calibration method. On the one hand, the extension module of an embodiment may share an ADC sampling circuit on a main module, so that the manufacturing cost of the extension module is reduced. On the other hand, an embodiment can facilitate the replacement of different extension modules for the main module without repeated calibration.