RFID阅读器的驱动及模块设计

当前，大部分有关RFID的文章，都在探讨RFID在提高产品物流速度和信息采集质量方面的作用或研究有关RFID硬件设备，而有关RFID阅读器的驱动及接口技术方面的研究很少。主要介绍了RFID阅读器的驱动模块及模块工作原理，同时介绍阅读器与上层数据管理器之间的接口设计。     

辽宁省种质库LGRIS系统平台设计

针对目前国内种质资源管理信息化流程存在的弊端,依据物联网的技术规范,设计了一套集软硬件一体化、内部数据管理及对外网站发布一体化的,基于物联网技术的种质资源信息处理平台。     

Movement patterns of seaward migrating European eel (Anguilla anguilla) at a complex of riverine barriers: implications for conservation

River infrastructure such as weirs and hydropower stations commonly present migrating fish with multiple potential passage routes. Knowledge of the cues fish use to navigate such environments is required to protect migrants from hazardous areas and guide them towards safe passage; however, this is currently lacking for many species. Employing high‐resolution positioning telemetry, this study examined movements of downstream migrating adult European eel, Anguilla anguilla, as they encountered a complex of water control structures in one location on the River Stour, southern England. The distribution of eels across five potential routes of passage differed from that predicted based on proportion of discharge alone. Certain routes were consistently avoided, even when the majority of flow passed through them. Passage distribution was partially explained by avoidance in the vicinity of a floating debris boom. Movement paths were nonrandomly distributed across the forebay and eels moved predominantly within a zone 2–4 m from the channel walls. Understanding of avoidance and structure oriented movementation exhibited by eels will help advance effective guidance and downstream passage solutions for adults.     

Vehicle Monitoring Control and Scheduling Management System in a Scenic Area

In order to help tourists choose satisfying scenic spots, content hotels, convenient lines and convenient vehicles, vehicle monitoring control and scheduling management system in a scenic area is presented, which dispatches vehicle by appointments and the statistic of tourists at a sight spot and recommends the tour line by broadcasting in vehicle. Vehicle monitoring control and scheduling management system in a scenic area, a integrative vehicle management system, is an integration of GPS, GIS, trunked radio system, a management system of booking room and a tourist statistic system at a sight spot.     

Disturbance‐induced responses of VHF and satellite tagged harbour seals

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Movements by adult cutthroat trout in a lotic system: implications for watershed-scale management

Abstract  Movements by adult cutthroat trout, Oncorhynchus clarkii (Richardson), were assessed from autumn to summer in the Salt River watershed, Wyoming-Idaho, USA by radio telemetry. Adult cutthroat trout were captured during September and October 2005 in the main stem of the Salt River, surgically implanted with radio transmitters, and tracked through to August 2006. Adult cutthroat trout were relatively sedentary and resided primarily in pools from October to March, but their movement rates increased during April. Higher movement rates were observed among tagged fish during May and early June. Among 43 fish residing in the Salt River during April 2006, 44% remained in the river, 37% moved into mountain tributaries and 19% moved into spring streams during the spawning season. Fish did not use segments of mountain tributaries or the upstream Salt River where fish passage was blocked by anthropogenic barriers or the channel was dewatered during summer. Almost all the fish that moved into spring streams used spring streams where pools and gravel–cobble riffles had been constructed by landowners. The results suggest that adult Snake River cutthroat move widely during May and early June to use spawning habitat in mountain tributaries and improved spring streams. Maintaining the ability of adult fish to move into mountain streams with spawning habitat, preserving spawning habitat in accessible mountain tributaries and removing barriers to upstream movements, and re-establishing summer stream flows in mountain tributaries affected by dams appear to be habitat management alternatives to preserve the Snake River cutthroat trout fishery in the Salt River.     

基于无线测距的农业机器人导航定位方法

针对农业机器人应用中的自主导航问题,提出了一种基于无线测距的导航定位方法。首先,分析了机器人的机械模型和位姿描述;然后,阐述了超宽带测距的原理,并分析了基于超宽带测距的定位模型;最后,设计了基于卡尔曼滤波器的多信标传感器信息融合算法。该方法稳定性高,操作简便,解决了农业机器人在恶劣和未知作业环境中的导航定位问题。     

稻谷热风辅助射频干燥工艺及相关品质研究

新型热风辅助射频(HA-RF)技术已被证实在稻谷杀虫方面具有良好的效果,为探究其同步杀虫干燥的应用潜力,本研究重在探究HA-RF在稻谷干燥方面的效能,开发稻谷HA-RF干燥工艺并研究相关的品质变化.结果表明:极板间距为10.0 cm(射频加热速率6.10℃/min),干燥温度为60℃,样品厚度为3.0 cm时,稻谷HA-RF干燥效能最佳;HA-RF与热风(HA)干燥相比可缩短干燥时间34.6％,单位能耗也更低.此外,HA-RF与HA干燥相比对稻谷精米率、整精米率和爆腰率的影响无显著差异,但HA-RF干燥可以更好地保留维生素E,且对样品颜色和微观结构的影响也较小.该研究表明HA-RF是一种比HA干燥更加高效节能的技术,且干燥后稻谷品质更好,在稻谷同步干燥杀虫上具有一定应用潜力.     

基于农业物联网的改进型双门限频谱检测算法研究

农业物联网的出现,对信息化与农业现代化融合具有积极推动的作用。在农业物联网中信息传输是一个至关重要的环节,到目前为止,普通的3G和4G通信网络已经不能提供农业物联网中进行信息传递所需要的频谱资源,而认知无线电网络恰恰可以满足农业物联网的需求。它显著的特点就是可以发现未被授权用户利用的频谱,来供给未授权用户使用,提高了频谱资源的利用率。在认知无线电中,最重要的步骤就是进行频谱检测,笔者就是在双门限频谱检测算法的基础上提出一种新型算法。该算法适当地选取条件好的认知用户进行数据融合,并不是采纳所有认知用户的本地检测信息。仿真结果表明:本文提出的算法可有效提高认知无线电系统中频谱感知的性能,降低虚警概率,以更好地为农业物联网提供可用的频谱资源。     

基于RFID/GIS物联网的肉品跟踪及追溯系统设计与实现

为了提高肉品跟踪与追溯系统信息的实时性、准确性和可靠性,该文介绍了无线射频识别技术（RFID）、物联网及电子产品代码（EPC）系统相关技术,提出了基于无线射频识别技术的肉品企业资源平台架构,详细研究和分析了肉品销售阶段的信息流程,设计了基于无线射频识别技术的肉品销售跟踪及追溯体系,包括跟踪系统和追溯系统。跟踪系统通过在销售节点上的产品电子代码系统,对附有无线射频识别芯片标签的肉品信息进行跟踪。追溯系统通过对象名解析服务（ONS）服务器,查出肉品销售相关节点实体标记语言（PML）服务器的地址,进而获得肉品的