Research On Detection Algorithm Of Soil Salt Special Sensing Device Of The Great Wall

With the rapid development of environmental monitoring technology, more and more new detection technology is applied to the protection of the cultural relics in the soil. For now soil salinity measuring equipment cannot in no man’s land long-term monitoring, according to the national science and technology support project-《Research on Key Technologies of intelligent perception of preservation condition of the Great Wall》, designs a special sensing device for rammed earth salt. In this paper, an algorithm for the detection of the apparent conductivity of soil is studied. Because of this algorithm complicated, many defects are unknown parameters and difficult to obtain, so this paper proposes the soil solution conductivity detection algorithm for the determination of soil salinity. The mathematical model between the apparent conductivity of soil and soil solution conductivity is established, and the mathematical model is analyzed. The validity of the algorithm is verified by experiments, and the specific sensing device is calibrated. The main work of this paper includes the following:Analyze the measurement principle of the conventional soil salt detection device, and according to the’special sensing device corresponding rammed earth salt design, study the method of measuring the apparent conductivity of soil, discuss the basic principles of in situ soil apparent conductivity method and related measurement methods and the main factors affecting the soil electrical conductivity in detail. In view of the defects of the apparent conductivity detection algorithm of the soil, a soil solution electrical conductivity detection algorithm is proposed, and the mathematical model of the algorithm is analyzed. Simulation experiment was carried out to verify the effectiveness of the detection algorithm by MATLAB, and accomplish calibration work of special sensing device.