Potato seed-metering monitoring and improved miss-seeding catching-up compensation control system using spatial capacitance sensor

作     者：Guanping Wang Xiaoping Yang Wei Sun Yan Liu Chengjiang Wang Hua Zhang Xiaolong Liu Bin Feng Hongling Li 

作者机构：Mechanical and Electrical Engineering CollegeGansu Agricultural UniversityLanzhouGansu 730070China 

出 版 物：《International Journal of Agricultural and Biological Engineering》 (国际农业与生物工程学报（英文）)

年 卷 期：2024年第17卷第4期

页      面：255-264页

核心收录：

学科分类：08[工学] 0812[工学-计算机科学与技术（可授工学、理学学位）] 

基　　金：support of the Industrial support plan of the Gansu Provincial Department of Education(Grant No.2023CYZC-42) the National Natural Science Foundation of China(Grant No.52165028) the Key Scientific and the Technological Program of Gansu Province(Grant No.22ZD6NA046) 

主　　题：potato planter seed-metering monitoring miss-seeding spatial capacitance sensor maximum net capacitance fluctuation improved catching-up compensation 

摘      要：The congenital yield reduction caused by miss-seeding in spoon-type seed-metering device of small and medium-sized potato planter is *** on the physical mechanism of different measured capacitance values between two fixed capacitor plates with different media,a miss-seeding detection scheme based on a spatial capacitance sensor is proposed first.A simple and efficient spatial capacitance sensor that can obtain as large capacitance measurement value as possible is designed,and a dual CPU coordinated seed-monitoring and compensation control system architecture is ***7745 is selected for the capacitance measure of the spatial capacitance sensor,and the code of grating encoder is also recorded at the same ***,when each potato spoon passing through the space surrounded by the capacitor plates,the maximum net capacitance fluctuation and its corresponding position can be acquired.A suitable threshold can distinguish between normal-seeding and miss-seeding ***,it should be emphasized that,this monitoring system only requires one monitoring ***,based on obtained information,an improved miss-seeding catching-up compensation plan is put *** utilizing the powerful memory capability of the CPU,this system does not need to complete compensation immediately after the miss-seeding ***,the miss-seeding information and the location of the accident can be just marked in advance,and only when the opportunity arrives,can the miss-seeding catching-up compensation be truly *** this way,the position of the seed-monitoring points can be free from restriction,and the control strategy can therefore be significantly *** soil tank test data showed that,the identification accuracy of the miss-seeding detection system was not less than 94%.When the seed-metering chain speeds are 0.2,0.3,and 0.4 m/s,the average success rates of the miss-seeding compensation system are 94.32%,83.65%,and 75.00%,respectively.T