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基于条码溯源电子秤的社区菜店交易管理与追溯系统 总被引：1，自引：0，他引：1
以自主研发的条码溯源电子秤为信息采集基础、以交易信息数据库为管理核心、以手机扫描二维条码为追溯手段,构建了社区菜店交易管理与追溯系统框架。条码溯源电子秤在集成相关模块的基础上,实现了产品称量、身份验证、标签打印和数据上传等功能。在突破电子秤数据传输与解析技术、改进包含多条信息的手机扫描二维条码追溯识别技术的基础上,实现了社区菜店交易管理与追溯系统。通过搭建模拟环境,对连接多台电子秤的数据传输稳定性、手机扫描二维条码追溯进行了测试。结果表明,无论是实时传输方式还是集中传输方式,其传输成功率均在99%以上;随着标签中产品数量的增加,不同像素的手机识别速度和识别成功率均存在不同程度的下降趋势,其中800万像素的手机在识别速度上具有明显优势。 相似文献
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基于手机二维条码识别的农产品质量安全追溯系统 总被引：5，自引：0，他引：5
针对现有农产品质量安全追溯中成本高、追溯设备便携性差等问题,设计了基于手机二维条码识别的农产品质量安全追溯系统。阐述了系统的架构和主要功能设计,并对系统采用Nokia 3款手机为实验终端在手机摄像头与条码不同的距离处进行了最佳识别距离、识别时间、识别率和准确率的测试,食品包装袋和标签纸上条码平均识别时间分别为7.3 s和5.1 s,平均识别率分别为67.8%和75.6%,准确率均可达到100%,识别的最佳距离为10 cm左右,最短识别时间仅为6.4 s和3.4 s。测试结果表明,该系统可以方便用户快速识别产品的二维条码标签,为消费者提供了一种新的追溯手段。 相似文献
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介绍了机动车配件质量跟踪追溯的国内外发展现状,提出采用RFID的机动车配件质量跟踪追溯系统框架,构建和分析了系统各模块功能,设计了RFID高频区和超高频区并用的双频追溯码标签,提出了基于XML的系统主追溯中心端数据库和各企业端数据库同步更新与交换技术。系统可以同时满足政府、配件生产经销商、消费者三方的需求,实现配件质量保证与追溯,促进机动车配件行业的健康规范发展。 相似文献
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《中国农机化学报》2016,(8)
解决农产品出入库过程中物流与信息流的融合,为提高农产品在生产和流通环节的信息对接与追溯能力奠定基础。在农产品出入库过程中引入自主研发的智能出入库设备,作为物流追溯信息采集与关联的载体。基于该设备提供的无线传输、条码扫描、气缸剔除和显示控制装置,开发控制农产品出入库过程的自动装卸货软件系统。实现出入库环节中的产品滚动扫描与订单自动核查,使农产品追溯从订单级别提高到产品级别;将本方案应用于北京市某农产品合作社,通过测试表明,经过初选的待选产品中订单查出率和核查成功率均达到100%以上,单一产品的核查时间为1.5s,明显快于人工操作。智能出入库设备能显著提高农产品在流通过程的追溯能力。 相似文献
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介绍了RFID技术和物流配送的概念,完成了水果包装模块和基于RFID的自动配送系统的设计,实现了一套基于RFID的水果包装和自动配送系统。系统可以完成水果分类包装、贴RFID便签,以及识别和跟踪整个获取和供应链的信息,能够大大节省时间和减少人工成本,简化物流配送过程和提高配送效率,具有较强的应用价值。 相似文献
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为满足水果追溯条码清晰、耐久的要求,选取橘子为试验对象,对比纳秒激光和皮秒激光在其表面打印二维码的效果。试验结果表明:与纳秒激光相比,皮秒激光在橘子表皮上打印的线条平直度佳,轮廓清晰,对表皮的损伤更小。 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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车用发动机润滑油失效规律与更换周期研究 总被引：7，自引：0，他引：7
研究在正常使用条件下１０Ｗ／３０－ＱＣ级润滑油用于某型车用发动机时所表现的失效规律,确认期服从两参数Ｗｅｉｂｕｌｌ分布,并给出分布的尺度参数η和形状参数ｍ之最佳线性无偏估计（ＢＬＵＥ）同时,还为定量分析,计算车用发动机润滑油的使用可靠性和合理确定其更换周期提供了一套可供借鉴的方法,并给出了具体的计算实例。 相似文献
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赵国杰 《农业机械化与电气化》2011,(4):106-107
乡（镇）农技推广体系是农业发展的关键。介绍朝阳市农业技术推广体系的现状,针对目前体制及运行机制、服务手段等方面存在的问题,提出适合朝阳市乡（镇）农技推广体系改革与发展的对策,以期对全省农技推广体系改革和发展起到一些借鉴作用。 相似文献
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苑庆刚 《农业机械化与电气化》2010,(3):52-54
草莓果味酸甜爽口,营养价值高,为人们所喜爱的应市鲜果之一。由于草莓易受损伤和微生物侵染,因此其采收、贮藏过程极为重要。介绍草莓采收过程中的注意事项以及11种贮藏保鲜技术的实施步骤和操作方法,推介9种加工方式,为草莓产业化提供技术支持。 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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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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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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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