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随着农业自动化技术的不断发展,无人驾驶收割机被逐渐应用到农业生产中,由于其远程监测和控制技术还不成熟,还无法达到完全无人化作业的水平。为了实现收割机的完全无人化作业,需要提高远程监测系统的实时监测效率。为此,将云平台数据挖掘和并行算法引入到了远程监测系统的设计上,通过对漏收率、破损率的实时监测来提高收割机自主作业水平。为了验证方案的可行性,对收割机远程监测系统的性能进行了测试,结果表明:收割机远程监测系统可以有效地提高播种机的作业效率和质量,对于提高其无人化作业的自动化程度具有重要的意义。 相似文献
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甘蔗收割机作业工况数据的实时监测具有重要的实际意义,设计并实现一种基于云平台的甘蔗收割机作业远程信息平台。通过PLC、CAN总线和Modbus协议完成车载端的现场作业数据实时采集,使用通信模块并采用MQTT协议将数据上传到云平台,终端用户可以通过手机App或Web访问云数据,实现移动终端对甘蔗收割机作业工况数据的实时监测。通过现场测试结果表明：在1.52 h内,实际收到甘蔗收割机实时传来数据5 465条,数据丢失7条,数据准确率为99.88%,丢失率为0.12%。该系统对甘蔗收割机数据监测参数准确,实时性高,能够实现甘蔗联合收割机作业数据的实时采集、远程传输、数据储存与分析等功能,为甘蔗联合收割机的智能化与信息化应用提供了技术支撑。 相似文献
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为了提高收割机调度系统的管理水平和农机调度的效率,将B/S架构和可视化分析技术引入到了调度系统的设计中,用户可以直接通过浏览器对远程收割机的轨迹数据进行查看,提高了调度系统的可查询性和可视化水平。改进后的调度系统可以实时显示收割机的作业动态和作业轨迹,农机管理人员可以根据作业轨迹合理地对农机作业路径做出规划;当作业的农机较多时,管理人员也可以根据作业区域的面积和特点,对每台农机的作业做出合理的调度。由于采用B/S架构,驾驶人员可以通过浏览器用户端对收割机的作业轨迹充分了解,特别是在遇到急转弯或者障碍物时提前做出预判,从而降低了事故的发生概率。 相似文献
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农业机械设备在实际的生产应用中,常常存在信息管理不集中、设备利用率低及设备维修不及时等问题。为此,以履带式收割机为研究对象,提出了一种基于STM32的履带式收割机远程状态监测系统智能终端,采用嵌入式智控平台、GPS、GSM以及CAN总线技术,实现远程对履带式收割机地理信息、工作信息、清洗夹带损失、机械故障,以及预防突发性障碍的监测和预警。试验表明:该系统终端可以实现对履带式联合收割机实时工作状态和潜在故障信息的准确采集与判断,对实现收割机的地理信息、主动维护和预防突发性故障的发生具有重要的参考价值。 相似文献
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《中国农机化学报》2016,(6)
为实现大面积区域农田环境的实时远程连续监测,对比保护性耕作和传统耕作技术的农田环境信息,开发农田环境信息采集与远程监测系统。该系统利用STC12C5A60S2单片机为核心控制器,通过GSM(Global System for Mobile Communications)无线传输网络进行SMS(Short Messaging Service)信息发送,利用太阳能电池板对采集节点进行供电,通过GIS(Geographic Information System)软件进行农田环境的实时监测。实验结果表明:远程监测系统能够连续准确地传送实时数据,监测时间分别为播种期,生长期,收获期,系统在传统耕作模式下检测精度为97.30%,95.18%,96.64%,在保护性耕作模式下检测精度为96.39%,95.11%,95.34%;在中国北方玉米生长季节,保护性耕作土壤含水量明显高于传统耕作土壤含水量,并且当降雨量减少时,采用保护性耕作的土壤水分利用率较传统耕作技术有明显的提高。 相似文献
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Overland water and salt flows in a set of rice paddies 总被引：1，自引：0，他引：1
E. Playn O. Prez-Coveta A. Martínez-Cob J. Herrero P. García-Navarro B. Latorre P. Brufau J. Garcs 《Agricultural Water Management》2008,95(6):645-658
Cultivation of paddy rice in semiarid areas of the world faces problems related to water scarcity. This paper aims at characterizing water use in a set of paddies located in the central Ebro basin of Spain using experimentation and computer simulation. A commercial field with six interconnected paddies, with a total area of 5.31 ha, was instrumented to measure discharge and water quality at the inflow and at the runoff outlet. The soil was classified as a Typic Calcixerept, and was characterized by a mild salinity (2.5 dS m−1) and an infiltration rate of 5.8 mm day−1. The evolution of flow depth at all paddies was recorded. Data from the 2002 rice-growing season was elaborated using a mass balance approach to estimate the infiltration rate and the evolution of discharge between paddies. Seasonal crop evapotranspiration, estimated with the surface renewal method, was 731 mm (5.1 mm day−1), very similar to that of other summer cereals grown in the area, like corn. The irrigation input was 1874 mm, deep percolation was 830 mm and surface runoff was 372 mm. Irrigation efficiency was estimated as 41%. The quality of surface runoff water was slightly degraded due to evapoconcentration and to the contact with the soil. During the period 2001–2003, the electrical conductivity of surface runoff water was 54% higher than that of irrigation water. However, the runoff water was suitable for irrigation. A mechanistic mass balance model of inter-paddy water flow permitted to conclude that improvements in irrigation efficiency cannot be easily obtained in the experimental conditions. Since deep percolation losses more than double surface runoff losses, a reduction in irrigation discharge would not have much room for efficiency improvement. Simulations also showed that rice irrigation performance was not negatively affected by the fluctuating inflow hydrograph. These hydrographs are typical of turnouts located at the tail end of tertiary irrigation ditches. In fact, these are the sites where rice has been historically cultivated in the study area, since local soils are often saline-sodic and can only grow paddy rice taking advantage of the low salinity of the irrigation water. The low infiltration rate characteristic of these saline-sodic soils (an experimental value of 3.2 mm day−1 was obtained) combined with a reduced irrigation discharge resulted in a simulated irrigation efficiency of 60%. Paddy rice irrigation efficiency can attain reasonable values in the local saline-sodic soils, where the infiltration rate is clearly smaller than the average daily rice evapotranspiration. 相似文献
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瓦房店市是我国重要的水果生产基地,在国内水果生产领域占有重要地位。随着水果市场化的不断深入,如何满足和适应国内外市场需求成为瓦房店市水果生产的关键问题。从瓦房店市水果生产实际出发,阐述了实施水果生产标准化的必要性,提出了发展水果生产标准化的具体措施。 相似文献
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对引进的谷子新品种金谷子耐旱TG118进行品种比较试验和多点试种。结果表明：该品种抗旱、耐瘠、适应性强,稳产、高产、抗病抗风抗倒伏强,品质优良,粮草兼用,种植简单,省工易管;一般产量在6000kg/hm2以上,比当地主栽品种增产20%以上。最高产量达9450kg/hm2,适于在辽西北地区推广应用。 相似文献
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对《种子法》存在问题的探讨 总被引：1，自引：0，他引：1
李鹏 《农业机械化与电气化》2011,(6):129-130
《种子法》是我国种植业第一部法律。自实施以来,为依法加强种子管理提供了有力的法律支撑,促进我国种子产业发生翻天覆地的变化。但随着依法管理工作的深入和种子产业的快速发展,《种子法》及配套规章的一些问题逐步显现出来。对《种子法》及配套规章存在的问题进行深入分析,对需要进一步补充的章节以及需要调整的内容进行深入探讨,以求更加完善和明确。 相似文献
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About 30 years have passed since the Government of Egypt embarked on implementing a series of large scale drainage projects. At present, about 3.8 million acres have been provided with drainage systems on the basis of systematic pre-drainage investigations and designs. The target is to provide drains in approximately 6.4 million acres in the Nile Valley and Delta.The implementation of the subsurface drainage system is carried out by the public sector and private contractors under direct supervision of governmental regional departments. The implementation process depends on many factors related to the drainage material, machinery, manpower, site requirements, farmers and organizations involved. Problems and constraints are sometimes challenging, however, the annual rate of implementation has gradually increased to 170,000 acre/year.This paper discusses the different aspects involved in the implementation process of drainage systems. The development in materials, machinery and construction technologies will be reviewed. Institutional and management factors are going to be also considered. 相似文献
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在新世纪,面对机遇和挑战,党的十六大把“社会更加和谐”作为全面建设更高水平的小康社会的一个重要目标。中国人素有社会和谐的理想;西方人自古也向往社会和谐;借鉴东西方两种和谐社会思想的经验、教训,构建社会主义和谐社会理论。 相似文献
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Gunter Wriedt Marijn van der Velde Alberto Aloe Fayçal Bouraoui 《Agricultural Water Management》2009,96(5):771-789
We present a pan-European irrigation map based on regional European statistics, a European land use map and a global irrigation map. The map provides spatial information on the distribution of irrigated areas per crop type which allows determining irrigated areas at the level of spatial modelling units. The map is a requirement for a European scale assessment of the impacts of irrigated agriculture on water resources based on spatially distributed modelling of crop growth and water balance. The irrigation map was compiled in a two step procedure. First, irrigated areas were distributed to potentially irrigated crops at a regional level (European statistical regions NUTS3), combining Farm Structure Survey (FSS) data on irrigated area, crop-specific irrigated area for crops whenever available, and total crop area. Second, crop-specific irrigated area was distributed within each statistical region based on the crop distribution given in our land use map. A global map of irrigated areas with a 5′ resolution was used to further constrain the distribution within each NUTS3 based on the density of irrigated areas. The constrained distribution of irrigated areas as taken from statistics to a high resolution dataset enables us to estimate irrigated areas for various spatial entities, including administrative, natural and artificial units, providing a reasonable input scenario for large-scale distributed modelling applications. The dataset bridges a gap between global datasets and detailed regional data on the distribution of irrigated areas and provides information for various assessments and modelling applications. 相似文献
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在介绍粉质仪和拉伸仪结构和原理的基础上,探讨了粉质曲线中吸水率、形成时间、稳定时间、弱化度和评价值等指标与面粉品质的关系,以及如何根据拉伸曲线中面团最大拉伸阻力、延伸度和拉伸曲线面积等指标来评价面团品质,并结合生产实际,概述了粉质仪和拉伸仪在面粉生产中的作用。 相似文献
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车辆ABS控制算法的研究及探讨 总被引：1，自引：0，他引：1
对现代汽车的ABS控制算法作了一些简单的介绍,同时指出了它们的一些缺陷,相应地提出了几种对ABS的其它控制方法并加以探讨,其中着重论述了ABS门限值控制算法中参考车速的确定方法和基于附着系数的控制算法。 相似文献