Parallel pH Sensor Calibration Using a Shared Standard Solution
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Solution Overview
Problem
Existing pH sensor calibration methods require a time proportional to the number of sensors being calibrated, leading to increased man-hours and the use of multiple pH standard solutions, which is inefficient and burdensome.
Innovation Solution
A calibration apparatus and method that allows simultaneous calibration of multiple pH sensors by managing them in parallel when immersed in a common pH standard solution, reducing the time, man-hours, and pH standard solution usage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If pH sensors are calibrated one by one using sequential methods, then calibration accuracy is maintained, but the time required for calibration increases proportionally with the number of sensors
Solution Approach 1:
The patent combines multiple pH sensor calibrations into a single parallel processing operation. Multiple pH sensors are immersed in separate containers with pH standard solutions simultaneously, and the calibration apparatus measures and calculates calibration values for all sensors at the same time, rather than processing them sequentially one by one.
Solution Approach 2:
The patent divides the calibration process into independent parallel segments. Each pH sensor is placed in its own container with pH standard solution, allowing individual calibration operations to proceed simultaneously without interfering with each other. The calibration apparatus independently measures and calculates calibration values for each sensor segment.
2Reliability
If multiple pH standard solutions are used for calibrating multiple pH sensors, then each sensor can be calibrated individually, but the amount of pH standard solution required and the operational burden increase
Solution Approach 1:
The patent merges the usage of pH standard solutions into a parallel processing framework. While multiple containers with pH standard solutions are used, they are prepared and utilized simultaneously in a coordinated manner, reducing the total operational burden and managing the consumption more efficiently compared to sequential individual calibrations.
3Ease of manufacture
If sequential calibration of multiple pH sensors is performed, then proper calibration procedure is followed, but the man-hours required for calibration increase
Solution Approach 1:
The patent segments the calibration workflow into independent parallel tasks that can be executed simultaneously. Each pH sensor calibration follows the proper procedure independently, but these segmented tasks run in parallel rather than sequentially, maintaining procedure compliance while improving productivity.
Solution Approach 2:
The patent changes the temporal parameter of the calibration process from sequential to parallel execution. By organizing multiple calibration operations to occur simultaneously with optimized resource allocation, the system maintains proper calibration procedures while significantly reducing the total time and man-hours required.
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 effectively reduces the time and effort required for calibrating multiple pH sensors, minimizing the burden on workers and the amount of pH standard solution needed.
Implementation Method 1
a glass electrode method is known. The glass electrode method is a measurement method using a proportional relationship between a potential difference between two electrodes in the pH sensor and a pH value of an object to be measured.
Data Source
AI summary
A calibration apparatus includes a processor configured to calibrate a first pH sensor measuring a pH of an aqueous solution, calibrate a second pH sensor different from the first pH sensor, and manage the first pH sensor and the second pH sensor so as to enable calibrations thereof in parallel, when the first pH sensor and the second pH sensor are both immersed in a pH standard solution indicating a predetermined pH.