Vision irrigation system for detecting emission character based on crop water duress sound

Abstract

The invention relates to a condition irrigation system that detects by water stress acoustic emission characteristics of crops, which is mainly characterized in that an acoustic emission sensor is arranged on the main diameter of the crop plant on an electronic balance; the acoustic emission sensor is successively connected with a signal conditioner, a PCI data acquisition card and a computer system; the electronic balance is connected with a computer by a PCI control bus, and the condition irrigation system of crop is automatically controlled by the computer. The invention has the advantages that intelligent condition precision sprinkling irrigation and drip irrigation are implemented according to the woe signals and the transpiration changing signals emitted by the crop experiencing water stress; meanwhile according to various soil moisture needed by the crop in different growth periods, the water supply efficiency and the water supply time of the crop is determined and properly adjusted by a computer software; appropriate soil moisture for the growth of crop is guaranteed, and the objective of water saving is achieved; thus the growth of crop under best soil water condition is effectively ensured.

Description

technical field [0001] The invention belongs to the field of agricultural biotechnology, in particular to a condition-based irrigation system based on the detection of acoustic emission characteristics of crop water stress. Background technique [0002] In recent years, agricultural industrialization technology has developed rapidly. According to incomplete statistics in the 1990s, the area of ​​greenhouses in the world is 600,000 hectares. my country's facility agriculture is developing rapidly. From 1996 to 1999, the cultivated area of ​​protected vegetables and flowers nearly doubled. Precision agriculture also presents attractive development prospects. Correspondingly, various irrigation techniques have also been developed rapidly. Condition-based precision irrigation has become an important water-saving measure and one of the important ways to improve water-saving efficiency. [0003] Accurate, rapid and reliable evaluation of crop water status is the theoretical ba...

AI Technical Summary

Problems solved by technology

But after all, it is an indirect indicator reflecting the crop growth environment, and the reflection is relatively slow, lagging, and the accuracy is low.

Because: (1). The responses of crops, varieties and growth conditions to soil moisture are very different

(2). Determination of depth by soil moisture and depth of crop roots are uncertain

(3). Root distribution and soil moisture are uneven, making sampling more difficult

(4). A small amount of precipitation or local irrigation produced by irrigation brings difficulties to the judgment of water deficit in the entire root zone

For example, the research on the relationship between acoustic emission signals and plant water status, other water physiological parameters, soil and atmospheric water stress, meteorological factors, crop growth and development stages, crop species and varieties must be upgraded from qualitative to quantitative, and the number of multi-factors should be refined. Models must be established, and the analysis and processing methods for acoustic emission signals need to be improved, etc.

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