On-line fertilizer quality detection device based on near infrared spectrum technology

Abstract

An on-line fertilizer quality detection device based on a near infrared spectrum technology comprises a sample conveying belt located on a fertilizer production field, optic probes, a detection and control unit and a microprocessor, wherein a fertilizer sample is conveyed by the sample conveying belt, and the optic probes are mounted above the sample conveying belt, transmit acquired spectra to the detection and control unit for light splitting and photoelectric conversion, and then transmit to the microprocessor for modeling and quantitative analysis. The detection device further comprises V-shaped baffles assembled at the front ends of the lower parts of the optic probes, and the V-shaped baffles and the lower sides of the optic probes are inserted into the fertilizer sample when the fertilizer sample is conveyed. The device has the advantages that the on-line detection device is provided by applying the near infrared reflection spectrum analysis technology to fertilizer quality analysis research, can detect active ingredients containing hydrogenous groups H-X in a fertilizer on line, detect the fertilizer sample on the conveying belt precisely on line and has the advantages of high speed, no destruction, no pollution, convenience in operation and the like.

Description

technical field [0001] The invention relates to the field of chemical fertilizer quality detection, in particular to an on-line detection device for chemical fertilizer quality. Background technique [0002] In my country's current fertilizer management regulations "Fertilizer Registration Measures", fertilizer refers to "used to provide, maintain or improve plant nutrition and soil physical, chemical properties and biological activities, can increase the output of agricultural products, or improve the quality of agricultural products, or enhance plant The quality of chemical fertilizers mainly includes: effective components of chemical fertilizers such as nitrogen, phosphorus, potassium, magnesium, boron, zinc, etc., water, and toxic and harmful substances in the production process of chemical fertilizers such as biuret. Unqualified fertilizer products will cause serious harm to crops. For example: At present, most of the chemical fertilizers contain three main nutrients: n...

AI Technical Summary

Problems solved by technology

For example: At present, most of the chemical fertilizers contain three main nutrients: nitrogen, phosphorus, and potassium. Among them, the urea content, that is, the nitrogen content, is the key quality index of the fertilizer, and the impurities contained in it, such as biuret, will be damaged when the content exceeds 1%. It has adverse effects on the growth of crops, that is, "burning seedlings". Excessive moisture content will cause fertilizer compaction, which is not conducive to storage and transportation

At present, the quality analysis of chemical fertilizers mainly relies on traditional laboratory analysis methods. This method uses many reagents and involves steps such as weighing, dissolving, digesting, distillation, titrating, and calculating, which is time-consuming and laborious; There is a certain risk and will have an impact on the environment

These limitations have affected the production, sales and rational use of chemical fertilizers to a certain extent

In addition, our country emphasizes N over P and K in the production and application of chemical fertilizers, resulting in waste of resources, polluting the environment, and endangering the health of humans, animals and plants. At the same time, the imbalance of nitrogen, phosphorus, and potassium cannot meet the nutritional needs of crops for timely growth.

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