Portable crop growth information monitor based on active light source

Abstract

Provided is a portable crop growth information monitor based on an active light source. The monitor is characterized by comprising a light source system, a spectrum signal acquisition system and a main unit system. The front end of the light source system is connected with the main unit system, the rear end of the light source system is connected with the spectrum signal acquisition system, the rear end of the spectrum signal acquisition system is connected with the main unit system, and the rear end of the main unit system is connected with the light source system. The monitor can simultaneously and comprehensively monitor and diagnose various physiology and zoology information including chlorophyll content of crops, a normalized difference vegetation index (NDVI), a leaf area index, leaf dry weight, nitrogen content, nitrogen accumulation amount, a net photosynthetic rate, a transpiration rate, leaf temperatures and the like, and has functions of data acquisition, analysis, display, storage, checking and display. By means of application of built-in electronic information techniques, the system structure is simplified, and the monitor has the advantages of being convenient to carry and low in power consumption and the like.

Description

technical field [0001] The invention relates to a portable crop growth information monitor based on an active light source, in particular to a device for non-destructive and rapid detection of crop growth information using an active light source, belonging to the field of intelligent detection of crop growth information, and dedicated to real-time acquisition and monitoring of crop growth information in the field. accurate diagnosis. Background technique [0002] Crop growth information monitoring can comprehensively perceive the growth status of farmland crops, provide information support for the implementation of precise management of crop production, and play an important role in strengthening my country's food security and improving food quality and yield. Lossless, fast, and portable are the inevitable trends in the development of modern farmland information acquisition equipment. The development of real-time and nondestructive acquisition equipment for crop growth info...

AI Technical Summary

Problems solved by technology

[0004] At present, some research and development institutions at home and abroad have developed spectroscopic instruments for monitoring crop growth. These instruments are basically based on passive light source mode. The measurement results are significantly affected by the sun's altitude angle, with low precision and poor reliability, which is not conducive to farmland. Field measurement in the environment

For example, the Crop Circle ACS-470 handheld spectrometer produced by Holland scientific company in the United States is not limited by the environmental light source conditions, and can be used to measure the nutritional status of conventional plants and the basic reflectance information of plant canopies and soils, which can be conveniently compared. The biomass and its distribution of a wide range of plants or crops are carried out, and the measured data can be used to analyze the nutrients, water, diseases and other growth conditions of crops, but the instruments are expensive and bulky, suitable for scientific research but not for Field agricultural production; patent 200710019340.9 discloses a portable multi-channel crop leaf nitrogen nutrition index non-destructive monitoring device, although it meets the non-destructive real-time monitoring of crop canopy leaf nitrogen content, nitrogen accumulation and leaf area index, but the The device uses sunlight as the light source, so it must be restricted by the weather during use, the working time is short, and the stability is poor

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