共查询到17条相似文献,搜索用时 203 毫秒
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由于目前的温室农业数据采集系统并不完善,因此,针对存在的问题我们提出了一项新型方案,主要是通过无线传感器网络技术来实现对温室农作物生长环境随时进行无线监控,这项技术的应用既打破了传统数据采集系统的局限性和复杂性,又能提高信息管理的自动化程度。 相似文献
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采用基于无线传感器网络的仓储安全监控系统是农产品仓储安全监控系统未来的发展方向之一.其一方面能够进一步实现国家对农产品仓储业现代化、高效化、个性化、精细化的要求,另一方面还能够拓展无线传感器网络的市场应用需求,最终达到双赢的目的.首先总结了仓储安全监控系统的意义和业务,然后分析了Wi-Fi技术用于农产品仓储安全监控系统的3点优势,最后给出了农产品仓储安全监控系统架构并详细描述了架构中无线传感器网络节点的构成及功能.该系统最终能够实现农产品仓储环境监控和农产品仓储作业设备监控的功能,并对农产品仓储作业设备维护管理提供信息依据. 相似文献
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Joe-Air Jiang Chien-Hao Wang Min-Sheng Liao Xiang-Yao Zheng Jen-Hao Liu Cheng-Long Chuang Che-Lun Hung Chia-Pang Chen 《Precision Agriculture》2016,17(6):766-785
The orchid industry in Taiwan has established large-scale orchid greenhouses to achieve high-precision cultivation of orchids, especially for Phalaenopsis. The wireless sensor network (WSN) technology has been shown to be able to play an important and useful role for effectively acquiring environmental parameters in real-time. However, the mobile benches equipped with different sensors used in an orchid greenhouse create a problem of susceptible dynamic network topology. To meet the requirements of reliable data acquisition in the monitoring of orchid growth, a novel dynamic convergecast tree algorithm (DCTA) based on a tree-like topology was designed and implemented in the WSN-based monitoring system. The proposed WSN algorithm uses the information of the received signal strength indication and hop count to dynamically adjust the routing path of each sensor node. The proposed algorithm includes a flexible scheduling-based design for the medium access control protocol to guarantee higher transmission reliability of the sensor data. An extensive series of experiments, including tests in the lab and an orchid greenhouse, were conducted to examine the performance of the proposed DCTA. The experimental results show that the proposed algorithm can reliably collect environmental data; average successful data delivery rates up to 92.5 % of the entire tested networks with multiple mobile nodes in the greenhouse can be achieved. The WSN-based monitoring system equipped with the proposed DCTA provides environmental measurements with better spatio-temporal resolution to achieve precision cultivation management for orchids. 相似文献
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综述无线传感器网络技术在节点构成、网络拓扑、通信协议等方面的特点,重点介绍无线传感器网络技术在精细农业中的典型应用,认为无线传感器网络技术应用于精细农业,需解决信号传输与衰减方式建模、多通信网融合及降低传感器成本等关键问题.提出将无线传感器网络技术与农艺技术、农业机械化及自动化技术等相结合,有助于优化农业决策支持系统,... 相似文献
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笔者概述了天津市现代设施农业发展状况及农业生态补偿配套政策措施。针对集约化设施农业发展过程中的生态环境问题,借鉴欧盟环境友好型先进技术措施及政策管理成功经验,在中欧、中德国际合作项目示范进展及示范成果的基础上,提出了开展天津市设施农业生态补偿研究,结合沿海都市设施农业特点,制定天津市农业生态补偿规划,设立设施农业生态补偿专项资(基)金;完善设施农业生态补偿的技术支撑体系;建立沿海都市设施农业生态补偿监督评估体系;提高农民组织化程度,推进设施农业产业化进程的政策建议,为天津市地方政府提供理论与实践参考。 相似文献
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为了提高随机部署条件下无线传感器网络对目标监测区域覆盖质量,将目标区域划分为彼此相邻但互不重合的子区域,根据各子区域的期望覆盖质量,并利用改进的粒子群算法优化各子区域节点的分布密度;然后在节点间建立虚拟力场,利用虚拟力调整移动节点的部署位置.仿真实验结果表明,该方法能有效优化移动节点的部署,改善目标区域内节点的分布情况,提高无线传感器网络的覆盖服务质量. 相似文献
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ZigBee-based wireless sensor network localization for cattle monitoring in grazing fields 总被引:7,自引:0,他引:7
Juan Ignacio Huircán Héctor Young Jaime Bustos Marcelo Toneatti 《Computers and Electronics in Agriculture》2010,74(2):258-264
This paper presents the design of a localization scheme in wireless sensor networks (WSN) for cattle monitoring applications in grazing fields. No additional hardware was required for distance estimation since they were performed using the link quality indication (LQI), which is a standard feature of the ZigBee protocol. The ratiometric vector iteration (RVI) algorithm was implemented and modified to work with LQI measurements instead of the usual received signal strength indication (RSSI). Experimental results show acceptable localization performance given the requirements of usual cattle monitoring applications at low cost and low power consumption. 相似文献