Measuring Device for Soil Physical or Mechanical Properties of Rapeseed Direct Planting Field

ZHANG Qingsong, LIAO Qingxi, WANG Zetian, CHEN Jie, ZHU Longtu

Abstract

Considering the problem that the indoor measurement of soil physical or mechanical properties is time-consuming in laborious, and the function of instruments in the field measurement is single, a measuring device for farmland soil physical and mechanical characteristics was designed. The device can measure soil moisture content, firmness, cohesion and internal friction angle, and the measurement results can be displayed and stored in the mobile APP. It realized walking control based on self-propelled mobile platform. An STM32 single chip microcomputer was used as the core controller, an FDR sensor was used to obtain the soil moisture content, and the soil firmness and shear strength parameters, including cohesion and internal friction angle were measured through the cone penetration component. In addition, the measurement principles of the cone penetration component and the soil moisture content detection component of the device were analyzed, the hardware circuit and software of the device measurement control system were designed, and the input and output responses of cylindrical pressure sensor, thin film pressure sensor and soil moisture sensor were determined by sensor calibration test, respectively. Totally 71 soil samples were selected, and the mathematical measuring models of soil cohesion and internal friction angle were established by the least square method based on the sample moisture content and sample friction coefficient data obtained based on the conical force balance relationship. The model fitting coefficient R2 was 0.932 and 0.956, respectively. Field measurement experiments were carried out to measure soil moisture content, firmness, cohesion and internal friction angle. The results showed that compared with AYD-2 type soil firmness meter, oven drying method and ZJ-D type direct shear instrument, the average relative errors of soil firmness, soil moisture content, cohesion and internal friction angle measured by the measuring device of farmland soil physical and mechanical properties were 3.34%, 5.06%, 10.40% and 8.20%, respectively. The research result can provide a reference for the development of a fast and integrated measurement device for multiple physical and mechanical properties of farmland soil.


Keywords: rapeseed direct planting field, soil moisture content, soil shear strength, soil firmness, measuring device

 

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LIAO Qingxi, BU Xiangli, SUN Wencheng, et al. Development of driven plow-rotary combined tillage machine for construction of rational tillage in rape seedbeds[ J ]. Transactions of the Chinese Society for Agricultural Machinery , 2020, 51(11) :74 -84. ( in Chinese)

WEI Guoliang, ZHANG Qingsong, LIU Lichao, et al. Design and experiment of plowing and rotary tillage buckle device for rapeseed direct seeder [ J ]. Transactions of the Chinese Society for Agricultural Machinery, 2020, 51 ( 6 ) ; 38 - 46. (in Chinese)

WANG Lei, LIAO Yitao, ZHANG Qingsong, et al. Design on profiling chisel opener of precision broad width no-tillage planter for rapeseed and wheat [ J ]. Transactions of the Chinese Society for Agricultural Machinery, 2019, 50 ( 11 ): 63 - 73. (in Chinese)

ZHANG Qingsong, LIAO Qingxi, JI Wenfeng, et al. Surface optimization and experiment on ditch plowr of direct rapeseed seeder [ J]. Transactions of the Chinese Society for Agricultural Machinery, 2015, 46( 1 ) :53 -59. ( in Chinese)

LIAO Qingxi, W'U Chong, ZHANG Qingsong, et al. Design and experiment of speed-dependent seeding control system of rapeseed precision combined seeding machine [ J ]. Transactions of the Chinese Society for Agricultural Machinery, 2022, 53( 12) : 49 -58, 159. (in Chinese)

WEI Guoliang. Mechanism and seed bed preparation technology of plowing and rotary combined [ D ]. Wuhan; Huazhong Agricultural University, 2021. (in Chinese)

ZHANG Qingsong. Study on reducing adhesion and resistance and simulation analysis about ditching and rotary soil engaged tools for rape planter [ D]. Wuhan: Huazhong Agricultural University, 2017. (in Chinese)

FENG Lei, YANG Weizhong, SHI Qinglan, et al. Soil moisture meter based on time domain transmission principle [ J ]. Transactions of the Chinese Society for Agricultural Machinery, 2017, 48(3) ; 181 - 187. (in Chinese)

ZHANG Jianle, SHI Dongmei, LIU Yi, et al. Effects of soil bulk density and water content on shear strength of cultivated-layer in purple soil sloping farmland [J]. Journal of Soil and Water Conservation, 2020, 34(3) : 162 - 174. (in Chinese)

ZHANG Zenglin, HAN Meng, HAN Wenting, et al. Design and test of wireless underground sensor network nodes [ J ] . Transactions of the Chinese Society for Agricultural Machinery, 2021 , 52(7) ; 203 -212. (in Chinese)

KHABOUSHAN E A, EM AMI II, MOSADDEGIII M R, et al. Estimation of unsaturated shear strength parameters using easilv-available soil properties [ J ]. Soil and Tillage Research, 2018, 184; 118 - 127.

STEFANOW D, DUDZINSKI P A. Soil shear strength determination methods—state of the art[ J] - Soil and Tillage Research, 2021 , 208; 104881.

ZHANG Shujuan, QIU Zhengjun, WANG Fenghua, et al. Test on the field soil moisture and compaction acquisition instrument [J ]. Transactions of the Chinese Society for Agricultural Machinery, 2010, 41(9) ; 75 -79. (in Chinese)

LI Hongru, YU Weichu, W ANG Zhenving. Automatic calibration model of FDR soil moisture based on transfer learning [J ]. Transactions of the Chinese Society for Agricultural Machinery, 2020, 51(2) :213 -220. (in Chinese)

JIANG Q, CAN M, W ANG Y, et al. Estimation of soil shear strength indicators using soil physical properties of paddy soils in the plastic statefj]. Applied Sciences, 2021 ,11 :5609.

MOAYEDI H, BUI D T, DOUNIS A. Novel nature-inspired hybrids of neural computing for estimating soil shear strength [ J ]. Applied Sciences, 2019, 9: 4643.

ZHAI Junliang. Shear strength test and preliminary study on retrieving soil-water curve for unsaturated soils [ D]. Dalian; Dalian University of Technology, 2019. (in Chinese)

KHALILI N, GEISER F, BLIGHT G E. Effective stress in unsaturated soils; review with new evidence [ J ]. International Journal of Geomechanics, 2004, 4; 115 - 126.


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