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
CN104596631AInactive Publication Date: 2015-05-06BEIJING FORESTRY UNIVERSITY
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Patent Information

Authority / Receiving Office
CN Β· China
Patent Type
Applications(China)
Current Assignee / Owner
BEIJING FORESTRY UNIVERSITY
Publication Date
2015-05-06
Estimated Expiration
Not applicable Β· inactive patent

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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.
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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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