Voltage Sensor Memory Integration for Calibration Accuracy
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Solution Overview
Problem
Existing voltage and current sensing devices in medium voltage networks require manual insertion of calibration and correction factors, which are prone to errors due to their complex digit nature, affecting measurement accuracy.
Innovation Solution
Integration of a memory element, such as an EEPROM, directly into the signal cable connector of the voltage sensor device to store calibration data and transformation ratios, allowing for automatic retrieval and transfer to connected measuring devices, eliminating the need for manual input.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If manual insertion of calibration and correction factors is used, then device complexity is reduced, but measurement precision deteriorates due to human error
Solution Approach 1:
The patent combines the memory element storing calibration data with the signal cable connector, merging two previously separate functions into a single integrated component. This eliminates the need for separate manual data entry devices while maintaining relatively simple overall device architecture.
Solution Approach 2:
The calibration and correction factors are pre-stored in the memory element during manufacturing or setup, before actual use. This preliminary action eliminates the need for manual input during installation, preventing human error while requiring minimal additional device complexity.
2Ease of operation
If manual insertion of calibration data is required, then ease of operation deteriorates, but loss of information is reduced
Solution Approach 1:
The system performs automatic data retrieval and transfer without requiring manual intervention. The measuring device automatically reads calibration data from the memory element in the connector, making the system self-sufficient and eliminating human error in data entry while greatly simplifying installation operations.
Solution Approach 2:
The patent replaces the manual mechanical process of writing down and entering calibration data with an automated electronic data retrieval and transfer system. This substitution eliminates human error in data transcription while requiring minimal additional operational steps.
3Reliability
If calibration data is stored separately, then device complexity is reduced, but reliability deteriorates due to potential data entry errors
Solution Approach 1:
The memory element is integrated directly into the signal cable connector, combining data storage and signal connection functions in a single component. This merger ensures data accuracy by eliminating separate data handling steps while maintaining manageable device complexity through functional integration.
Data Source
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AI summary
The invention relates to a voltage and or current sensor device (Fig.1) for the use in medium- or high-voltage application and a method for operation of the same. The sensor device can have at least one voltage and/or current sensor (1), wherein the sensor(s) of the sensor device is (are) arranged in a housing. In order to enhance the communication between the sensor and the electronic device and to use maximum possible accuracy of the voltage and current sensors, a signal and/or data memory element (3) is integrated in the sensor housing, or placed near the sensor in such, that the sensor device output signal can be directly evaluated. A method includes an automatic communication of historical sensing data, individual calibration data and/or parameter data between the data memory element (3) and a central calculation/monitoring device