Method for measuring parameters of soil in greenhouse

Abstract

The invention discloses a method for measuring parameters of soil in a greenhouse. The method comprises the following steps of establishing a neural network by taking the temperature, humidity and carbon dioxide content of air and air flow as input parameters and taking the temperature, water content and carbon dioxide content of soil as output parameters; solving the optimal input parameter of the neural network; judging whether manual sampling is needed or not according to errors of estimation of the neural network in the previous circulation, wherein if yes, errors between the measured temperature, water content and carbon dioxide content of soil and the temperature, water content and carbon dioxide content which are estimated through the neural network of the soil are obtained through comparison by means of manual sampling and off-line analysis, the training neural network is updated through an additional momentum learning rule according to the measured temperature, water content and carbon dioxide content data of soil and the error data between the estimation of the neural network and the measured temperature, water content and carbon dioxide content of soil. According to the method, the soft measurement technology is adopted, and the soil parameters are measured and controlled accurately in real time.

Description

technical field [0001] The invention relates to a method for measuring soil parameters, in particular to a method for measuring soil parameters in greenhouses, and belongs to the technical field of detection. Background technique [0002] Agricultural production has seasonal characteristics, and greenhouses can help overcome the seasonality of agricultural production and improve agricultural production efficiency. The environmental factors affecting the growth of crops in the greenhouse include temperature, humidity, light and air circulation, especially the soil as the base for crop growth, soil temperature, humidity, pH, water content, carbon dioxide content, ventilation status, nitrogen, phosphorus, potassium The content of nutrients such as calcium and calcium have a direct impact on the growth of crops. In order to achieve the efficiency and quality of agricultural production, it is very important to quantitatively measure and control the above-mentioned various soil e...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a method for measuring soil parameters in greenhouses, which solves the problem that in the prior art, it is difficult to directly measure the soil environment parameters of crops in greenhouses with sensors. Instead, artificial intervals are used to measure and sample samples, and then instruments are used for off-line analysis. The technical problem that caused the inability to know the accurate value of soil physical quantity in real time

Images