Integrated Multivariable Instrument Calibration for Real-Time Field Use
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Solution Overview
Problem
Current calibration methods for multi-variable instruments are cumbersome, require specialized apparatuses, and struggle with real-time error evaluation, leading to increased costs and inconvenience, especially in field applications.
Innovation Solution
An instrument calibration apparatus with integrated physical quantity input/output units, measurement units, configuration units, and display units, capable of switching between modes to generate or measure standard values, allowing for real-time field calibration of multiple variables without the need for multiple specialized devices.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If separate calibration apparatuses are used for each type of equipment, then measurement precision is improved, but device complexity and cost increase
Solution Approach 1:
The patent implements a universal calibration apparatus that can calibrate multiple types of instruments (flow meters, pressure meters, temperature meters, level meters) through a single integrated system. The apparatus uses a standard instrument as a reference to provide standard values for various physical quantities, eliminating the need for multiple specialized calibration devices while maintaining calibration accuracy through the standard instrument's known performance characteristics
2Measurement precision
If multiple specialized calibration apparatuses are used, then calibration accuracy is improved, but ease of operation deteriorates due to carrying and setup complexity
Solution Approach 1:
The patent merges multiple calibration functions into a single portable apparatus that includes a standard instrument, physical quantity conversion unit, and comparison unit integrated in one system. This unified design allows the apparatus to be easily transported to field locations and quickly set up, while providing comprehensive calibration capabilities for multiple instrument types through the integrated standard instrument and conversion mechanisms
3Ease of operation
If separate calibration of multiple variables is performed, then ease of operation is improved, but measurement precision deteriorates due to inability to evaluate overall error
Solution Approach 1:
The patent implements a feedback mechanism where the standard instrument provides standard values that are fed into the physical quantity conversion unit, which then converts them to corresponding physical quantity values for comparison with the tested instrument's readings. This feedback loop enables comprehensive error evaluation by comparing converted standard values against actual measurements, allowing assessment of overall instrument performance across multiple variables simultaneously
Data Source
Figure 1A~1B
Figure 1C~1D
Figure 2
AI summary
An instrument calibration apparatus (100) and a calibration method using the same. The instrument calibration apparatus (100) comprises a physical quantity input/output unit (10), a physical quantity measurement unit (20), a physical quantity configuration unit (30), a display unit (40), a man-machine interaction unit (70), a storage unit (80), and a control unit (60). The instrument calibration apparatus can be widely applied to automatic calibration of field multivariable instruments.