摘要
针对现有固定式果品分级机设备庞大,难以适应狭窄的温室作业环境,而移动式果品分级机结构复杂的问题,设计了一种温室番茄分级机。以番茄为研究对象,根据番茄斜面滚动性、皮薄易损性及四分格果箱结构运用三维软件SoliderWorks设计了分级机机构及其关键部件。以STM32单片机为控制器,通过压力式称重传感器DYMH-102采样称重模拟信号,并通过24位A/D转换器HX711进行模数转换,控制器根据番茄称重数值划分番茄等级,并控制数字舵机和电动推杆动作,最终实现番茄分级。结果表明:番茄称重绝对误差为3.8 g,番茄分级周期为4.8 s,番茄分级成功率为87%,分级机作业性能好,可为实现设施农业智能装备和技术发展提供支撑。
A tomato grading machine in greenhouse was designed to address the problem of the existing fixed fruit grading equipment being too large to adapt to narrow greenhouse operating environments and the complex structure of mobile fruit grading. Taking tomatoes as the research object, a grading machine mechanism and its key components were designed using SoliderWorks based on the rolling properties of tomato slopes, the vulnerability of thin skin, and the structure of a four-cell fruit box. Using the STM32 microcontroller as the controller, the pressure type weighing sensor DYMH-102 was used to sample the weighing analog signal, and the 24 bit A/D converter HX711 was used for analog-to-digital conversion. The controller divided the tomato grades based on the tomato weighing values, controlled the digital servo and electric push rod actions, and ultimately achieved tomato grading. The results showed that the absolute error of tomato weighing was 3.8 g, the tomato grading cycle was 4.8 s, the success rate of tomato grading was 87%, and the grading machine performance was good, which could provide support for the development of intelligent equipment and technology in facility agriculture.
作者
郭超
刘继展
赵笑缘
毛罕平
GUO Chao;LIU Jizhan;ZHAO Xiaoyuan;MAO Hanping(Key Laboratory of Modern Agricultural Equipment and Technology of the Ministry of Education,Jiangsu University,Zhenjiang 212013,Jiangsu,China)
出处
《农业装备与车辆工程》
2024年第6期14-17,共4页
Agricultural Equipment & Vehicle Engineering
基金
国家自然科学基金面上项目(31971795)。
关键词
温室环境
番茄
自动分级
农业装备
greenhouse environment
tomatoes
automatic grading
agricultural equipment
