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A Method for Fast Calibration of Multiple Standard Samples for Environmental Detection

A technology for environmental detection and standard samples, applied in measurement devices, instruments, scientific instruments, etc., can solve problems such as implementation difficulties, limited memory space, and computing power, and achieve the effect of reducing the amount of numerical calculation, small errors, and easy implementation.

Active Publication Date: 2021-11-16
启盘科技发展(上海)有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

In embedded systems, the memory space and computing power are very limited, and it is very difficult to implement

Method used

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  • A Method for Fast Calibration of Multiple Standard Samples for Environmental Detection
  • A Method for Fast Calibration of Multiple Standard Samples for Environmental Detection
  • A Method for Fast Calibration of Multiple Standard Samples for Environmental Detection

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Experimental program
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Embodiment 1

[0050] The present invention proposes a method for quickly calibrating multiple standard samples for environmental detection. The first step is to measure the voltage of the pH electrode at N groups of time, and calculate the difference and the logarithm of the difference.

[0051] Table 1

[0052] i (serial number) 1 2 3 4 … τ (time) 1 2 3 4 … y (voltage) 175.174 175.2319 175.323 175.460 dy (differential) 0.0572 0.0916 0.1373 0.0687 log(dy) difference logarithm -2.86 -2.39 -1.985 -2.168

[0053] In the second step, according to the following formula (2), the parameters k and m of the pH response of a specific instrument can be calculated.

[0054] According to the theory related to chemical reaction speed, s chemical reaction speed, T is the time from the start of measurement, where k and m are constants:

[0055] s=ke -mτ -----(1)

[0056] Take the logarithm log on both sides, transform it into linear least squ...

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Abstract

The invention discloses a method for quickly calibrating multiple standard samples for environmental detection. The first step is to measure the voltage of the pH electrode at the time of N groups, and calculate the difference and the logarithm of the difference; the second step is to calculate according to the chemical speed reaction theory The parameters k and m of the pH response; the third step is smoothing to reduce errors caused by noise and jitter; the fourth step is to obtain a stable voltage by mathematical analysis and modeling. The calculation model of the present invention avoids the exponential formula for fitting voltage and time, and uses the convergent formula of the present invention to greatly reduce the amount of numerical calculation and errors.

Description

technical field [0001] The invention relates to the field of environmental detection, in particular to a method for quickly calibrating multiple standard samples of environmental detection. Background technique [0002] In the environmental protection industry, in order to protect green water, green mountains, blue sky and white clouds, it relies on the measurement and monitoring of various preparations for water quality. The most commonly used indicators are pH, ORP total phosphorus, and heavy metal monitoring and measurement. Among them, pH acidity is one of the most popular and most influential indicators. [0003] In order to ensure the high precision of the instrument measuring pH, it is necessary to use the standard solution of pH 4, pH 7, and pH 10 from time to time to test the instrument. Calibration is a time-consuming process, taking 40 seconds to 2 minutes per standard. Generally speaking, it takes 3-8 minutes to calibrate three standard samples of a handheld de...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N27/416
CPCG01N27/4165
Inventor 余水保顾毅康肖才斌徐力毕俊英王磊
Owner 启盘科技发展(上海)有限公司