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对近年来广德县推广机插秧成效进行总结,结合当地社会经济及农业生产实际,分析了推广机插秧的有利条件和制约因素,提出了加快推广应用的建议。 相似文献
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RTK GPS mapping of transplanted row crops 总被引:2,自引:0,他引:2
This study demonstrated the feasibility of using a real-time kinematic (RTK) global positioning system (GPS) to automatically map the location of transplanted row crops. A positive-placement vegetable crop transplanter retrofitted with an RTK GPS receiver, plant, inclination, and odometry sensors, and an on-board real-time data logger were used for transplant mapping in the field during planting. Sensing the location where each plant was placed in the soil using an absolute shaft encoder mounted on the planting wheel proved to be more robust and accurate than using an infrared light beam sensor to detect the stem location of each plant immediately after planting. Field test results showed that the mean error between the plant map locations predicted by the planting data and the surveyed locations after planting was 2 cm, with 95% of the predicted plant locations being within 5.1 cm of their actual locations. Along-track errors were greater than transverse-track errors indicating that some improvement in plant map accuracy might be obtained by characterization of dynamic planting effects on final plant location. Overall, the system was capable of automatically producing a centimeter-level accuracy plant map suitable for use in precision plant care tasks such as intra-row weed control. 相似文献
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基于穴盘苗力学特性的自动取苗末端执行器设计 总被引:14,自引:0,他引:14
通过对穴盘苗进行夹苗拉拔试验、钵体摩擦试验、钵体平板压缩抗压试验,研究分析了与自动移栽相关的穴盘苗力学特性,为机构设计提供依据。对穴盘苗自动取苗进行技术设计,得到两针钳夹式取苗末端执行器自动取苗的拉拔力与钵体抗压强度、夹持角度、夹持面积、静摩擦因数等参数的关系。利用建立的夹持参数关系,结合穴盘苗力学特性试验数据,设计了一种适应穴盘苗力学特性的自动取苗末端执行器。试制了物理样机,进行了自动取苗夹持力测试。测试结果表明,夹持力测试数据与理论计算数据无显著性差别,验证了理论设计的可靠性。在所测试的含水率下,当取苗频率为30株/min时,取苗成功率达到95.16%。 相似文献
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穴盘育苗移栽机两指四针钳夹式取苗末端执行器 总被引:12,自引:0,他引:12
设计了一种穴盘育苗移栽机两指四针钳夹式夹钵取苗末端执行器。利用2根气缸机械手指伸出4根夹取针插入苗钵,气缸机械手指闭合夹取针捏紧苗钵来取苗,利用两根气缸机械手指撑开放松夹持苗钵,4根夹取针回缩脱离苗钵来放苗。根据穴盘苗自动取苗力学要求,进行了基于穴盘苗物理力学特性的夹取力设计。试制末端执行器,进行夹钵取苗效能测试。在40 mm/s提取速度下,各试验因素的夹钵脱盘力无显著性差异。取苗效能的正交试验分析发现,苗钵含水率水平高度显著影响根土破坏,入钵角度、深度以及根系等试验因素没有统计学显著性影响。当夹取针入钵角为11°,入钵深度为32 mm,苗数为4株,含水率为55%~60%时,所设计的取苗末端执行器对苗钵的夹取作用达到最小根土破坏程度。 相似文献
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水稻机制钵苗抛秧机的研究 总被引:15,自引:0,他引:15
对2SP-10型水稻机制钵苗抛秧机的总体方案设计、自动排序机构、定量抛秧机构进行全面论述和重点理论分析,并提供了有关技术参数供参考 相似文献
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通过对钵苗在滑道上的运动进行了仿真分析和虚拟试验,同时还进行了物理样机试验对照,表明虚拟试验与物理样机试验结果比较接近,证明了滑道模型建立的合理性,参数选择恰当。从中得到了滑道倾角的取值范围,对设计物理样机有一定指导意义. 相似文献
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