Method for calibrating weighing precision of weighing lysimeter

A calibration method and technology of lysimeter, applied in the field of measurement, can solve the problems of high installation accuracy, long time consumption, complex structure of large lysimeter, etc., and achieve accurate and continuous weighing effect

Inactive Publication Date: 2015-05-06
BEIJING FORESTRY UNIVERSITY
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  • Abstract
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Problems solved by technology

However, due to the complex structure of the large-scale lysimeter, and the high requirements for the installation accuracy of each part, the cost of component maintenance is high, difficult, time-consuming and difficult to operate

Method used

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  • Method for calibrating weighing precision of weighing lysimeter
  • Method for calibrating weighing precision of weighing lysimeter
  • Method for calibrating weighing precision of weighing lysimeter

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Embodiment Construction

[0020] The specific implementation manners of the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0021] figure 1 It is a flowchart of a method for calibrating the weighing accuracy of a weighing lysimeter provided in an embodiment of the present invention, including:

[0022] S1: Add weights successively on the weighing soil of the weighing lysimeter, and obtain the weighing value of the weighing lysimeter after each increase, and obtain the correspondence between the total weight of the weight and the weighing value data set;

[0023] S2: Establish a regression model according to the data in the corresponding data set;

[0024] S3: Correcting the weighing value of the weighing lysimeter based on the regression model.

[0025] Preferably, in step S1, the weights a...

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Abstract

The invention discloses a method for calibrating weighing precision of a weighing lysimeter. The method comprises the following steps of: S1: successively increasing weights on the weighing soil body of the weighing lysimeter, acquiring the measuring values of the weighing lysimeter each time weights are added to obtain the corresponding data set among the total weight of the weights and the measuring values; S2: creating a regression model according to the data in the corresponding data set; S3: amending the measuring values of the weighing lysimeter according to the regression model. The method is simple, easy to perform, and accurate and continuous in weighing.

Description

technical field [0001] The invention relates to the field of measurement, in particular to a method for calibrating the weighing accuracy of a weighing lysimeter. Background technique [0002] The working principle of the large-scale weighing lysimeter is mainly to convert the soil weight into the scale range according to the set ratio through the levers of different coefficients, so as to reflect the change value of the soil weight. High-precision weighing can more truly simulate the process of natural soil moisture movement, which is also the advantage of the lysimeter compared with other instruments. Therefore, the weighing accuracy becomes one of the most important parameters of the weighing lysimeter. As the service life increases, the lever and box of the lysimeter will experience certain component fatigue and wear during long-term work; at the same time, the external environment will gradually interfere with the normal operation of the lysimeter, including precipitat...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01G23/01G01N5/04
Inventor 余新晓贾剑波刘文娜贾国栋涂志华莫莉李瀚之邓文平王贺年孙佳美赵娜娄源海
Owner BEIJING FORESTRY UNIVERSITY
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