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New calibration method of lysimeter weighing system

A technology of weighing system and calibration method, which is applied in the new calibration field of lysimeter weighing system, can solve the problems such as the increase of error value, achieve the effect of increasing accuracy, reducing error rate and error value, and improving contradiction

Inactive Publication Date: 2019-11-05
西安新汇泽测控技术有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the biggest defect of this method is that after it is calibrated in the actual process, it is found that the error rate will reach 50% when it is less than 1kg during the test, and the error rate will increase with the increase of weight weight above 1kg. will gradually decrease, but the error value will still increase a lot as the weight of the weight increases

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  • New calibration method of lysimeter weighing system
  • New calibration method of lysimeter weighing system
  • New calibration method of lysimeter weighing system

Examples

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Effect test

Embodiment 1

[0041] A new calibration method for a weighing system of a lysimeter, comprising the following steps:

[0042] 1) Adopt static calibration method

[0043] ① Zero point calibration: do not add weights, wait until the weighing system of the lysimeter is in a stable state, and perform zero point calibration.

[0044] ②Repeated calibration: starting from the smallest weight, place the weight of each specification 5 times to measure 5 values, and finally take the average value.

[0045] ③Linear calibration: starting from the smallest weight, place weights of 200g, 300g, 500g, 700g, 900g, 1000g, 2000g, etc. for linear calibration, repeat the array, and take the average value to make a linear graph.

[0046] ④Maximum capacity calibration: place weights according to the required maximum capacity.

[0047] ⑤ Calibration result inspection: place weights in order, repeat multiple groups and record the value as figure 1 shown in the four tables.

[0048] 2) Fit a straight line accordi...

Embodiment 2

[0055] A new calibration method for a weighing system of a lysimeter, comprising the following steps:

[0056] 1) Adopt static calibration method

[0057] ① Zero point calibration: do not add weights, wait until the weighing system of the lysimeter is in a stable state, and perform zero point calibration.

[0058] ②Repeated calibration: starting from the smallest weight, place the weight of each specification 5 times to measure 5 values, and finally take the average value.

[0059] ③Linear calibration: starting from the smallest weight, place weights of 200g, 300g, 500g, 700g, 900g, 1000g, 2000g, etc. for linear calibration, repeat the array, and take the average value to make a linear graph.

[0060] ④Maximum capacity calibration: place weights according to the required maximum capacity.

[0061] ⑤ Calibration result inspection: place weights in order, repeat multiple groups and record the value as figure 1 shown in the four tables.

[0062] 2) Fit a straight line accordi...

Embodiment 3

[0069] A new calibration method for a weighing system of a lysimeter, comprising the following steps:

[0070] 1) Adopt static calibration method

[0071] ① Zero point calibration: do not add weights, wait until the weighing system of the lysimeter is in a stable state, and perform zero point calibration.

[0072] ②Repeated calibration: starting from the smallest weight, place the weight of each specification 5 times to measure 5 values, and finally take the average value.

[0073] ③Linear calibration: starting from the smallest weight, place weights of 200g, 300g, 500g, 700g, 900g, 1000g, 2000g, etc. for linear calibration, repeat the array, and take the average value to make a linear graph.

[0074] ④Maximum capacity calibration: place weights according to the required maximum capacity.

[0075] ⑤ Calibration result inspection: place weights in order, repeat multiple groups and record the value as figure 1 shown in the four tables.

[0076] 2) Fit a straight line accordi...

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Abstract

The invention relates to the field of lysimeter weight calibration technologies and discloses a new calibration method of a lysimeter weighing system. The method has the advantages that the contradiction between a large range and high precision of the lysimeter weighing system can be relieved, and meanwhile the accuracy of data measurement of a lysimeter in daily operation is improved. According to the method, through analysis of multiple groups of detection data, it is discovered that a repeatability error of an error rate meter is obviously lowered compared with a previous calibration method, multiple measurement results are stable, and it is indicated that a segmented measurement method can relieve the contradiction between the large range and the high precision of a lysimeter weighingsensor, so that the method has the effect of relieving the contradiction between the large range and the high precision of the lysimeter weighing system and meanwhile guarantees the advantage that theaccuracy of data measurement of the lysimeter in daily operation is improved; and moreover, the lysimeter weighing system achieves the effects of reducing the error rate and an error value through the segmented calibration method.

Description

technical field [0001] The invention relates to the technical field of load-bearing calibration of a lysimeter, in particular to a new calibration method for a weighing system of a lysimeter. Background technique [0002] The sensitivity and range of the lysimeter weighing system are a standard for measuring the quality of a lysimeter in today's industry. Regardless of the size of the lysimeter, it is hoped that the two parameters of range and precision can be optimized. Accuracy and range are not only related to the mechanical design of the lysimeter itself, but also the calibration method has a great influence on these two parameters. Therefore, through a large number of practical operations and experimental verification, it is found that in order to achieve both range and accuracy, the calibration method must be improved. [0003] The current common calibration method is linear calibration, which is to put weights in sequence, and multiply the current value by a coeffic...

Claims

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Application Information

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IPC IPC(8): G01G23/01
CPCG01G23/012
Inventor 李军德路东敏张国超王刚
Owner 西安新汇泽测控技术有限公司
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