Water detection method capable of improving detection precision

Abstract

The invention discloses a water detection method capable of improving the detection precision. The water detection method comprises the following steps: (1) taking three to-be-detected samples, and dividing each to-be-detected sample into three parallel samples; (2) respectively measuring the nine samples through a microwave water detector, and selecting three positions in each sample for detection; (3) treating measured values of the three parallel samples of each to-be-detected sample; (4) comparing the water content values of the three to-be-detected samples; (5) measuring the water contents of the to-be-detected samples detected by the microwave water detector in the step (1) through an infrared water detector and a direct drying method; and (6) performing significant difference analysis on the three groups of obtained water content values. According to the water detection method disclosed by the invention, the to-be-detected samples are detected through three methods, namely a comparing, heating, drying and weighing method, an infrared reflectivity water measurement method and a microwave transmission method, so that the water content measurement is more precise, and errors are difficult to cause.

Description

technical field [0001] The invention relates to a moisture detection method, in particular to a moisture detection method capable of improving detection accuracy. Background technique [0002] In industries such as industry, agriculture, and medical care, the moisture content of materials such as building materials, crops, grains, textiles, and medical raw materials needs to be accurately measured and controlled in order to better control product quality. At present, the commonly used methods for measuring the moisture content of materials include heating and drying weighing method, infrared reflectance water measurement method, microwave resonant cavity method, microwave transmission method and so on. The heating and drying weighing method is a national standard measurement method with high precision, but the measurement speed is slow. It can only test the moisture content of a small amount of samples. It cannot be used for online rapid testing, and it only reflects the moi...

AI Technical Summary

Problems solved by technology

The heating and drying weighing method is a national standard measurement method with high precision, but the measurement speed is slow. It can only test the moisture content of a small amount of samples. It cannot be used for online rapid testing, and it only reflects the moisture content of the sample. Uniform, the moisture content of the sample may deviate from the average moisture content of the real material. Therefore, to reflect the average moisture content of the real material, multiple sampling measurements are required for statistical analysis. The test cycle is long and the efficiency is low.

Infrared reflectance water measurement method is to use the difference in the reflectance of infrared rays of specific wavelengths for samples with different water contents, and invert the water content of samples by measuring infrared reflectivity, which can be used for online testing, but because infrared rays are mainly reflected on the surface of materials The penetration depth is small, so it is mainly used to measure the water content of the surface layer of the material, and it is difficult to accurately measure the water content of the material body

[0003] Various water content detection methods have their own advantages but also have their disadvantages. In the existing water content detection methods, a single method is usually used for detection, so it is impossible to judge whether the obtained detection data is correct. Therefore, if There is no way to know if the measurement data is wrong, which may cause inaccurate test data of moisture content, resulting in some major economic losses