Hardware Design of Ethernet/IP Adapter

工业以太网是近年来的研究热点，相对于我国在现场总线技术上的落后现状，我们不应该在这个领域再次落后。本文论述与上海捷准工业自动化公司合作开发的Ethernet/IP通信适配器，即是符合工业以太网Ethernet/IP协议的工业控制现场仪器。其应用主要包括两个方面：(1)集成在传统的工业设备上，作为工业控制系统中信息管理层与现场设备层之间的沟通桥梁；(2)作为独立的设备，是Ethernet/IP工业互联网组网的基础设备，不同协议的工业设备、工业控制系统通过与Ethernet/IP工业互联网通信适配器的连接，便可实现数据集成、协议转换[43]。 本文首先介绍工业以太网的发展概况及其关键技术，并简要...The industry Ethernet is the focus of industrial research in recent years. Compared to our outdated technology in Fieldbus field, we should strengthen the research in this field. This dissertation elaborates the development of Ethernet/IP communication processor, which is industrial control local instrument conforming the industry Ethernet Ethernet/IP agreement, which cooperate with Shanghai Hurco...学位：工学硕士院系专业：信息科学与技术学院自动化系_系统工程学号：2005130249

Design of air-condition intelligence electric-economized device

空调智能节电器是针对空调、冰柜等家用高能耗制冷设备而开发的新型节电器产品。它通过优化压缩机运行曲线,实现对空调、冰柜的节电控制。设计的空调智能节电器硬件由89S52处理器、瞬态型SC2272-M4遥控解码芯片、开关电源等部分组成;软件由初始化模块、键码采集、按键处理、参数保存、显示模块、压缩机控制模块等部分构成。该节电器可遥控设定节电率;并通过减少空调压缩机的启停次数,延长空调机的使用寿命;同时,采用小体积、低功耗的开关电源有效降低节电器自身耗电。该节电器经国家家用电器质量监督检验中心测试,节电率可达到15%-45%,市场应用前景广阔。The air-condition intelligence electric-economized device is a new type of energy saving product which is developed for high-energy consumed refrigeration equipments,such as air-conditioner device and icebox,in household. This device saves the energy through optimizing the compressor’s operating curve.Its hardware is made up of 89S52 processor,SC2272-M4 telecontrol decoding chip,switching power and so on,while the software is made up of initialization module,key code collection,key-press processing,parameters preservation,display module,and compressor control module.This device can be set the electricity-economized rate remotely.It can extend the life span of the air-condition by reducing the start-stop times of the compressors,and can effectively reduce the energy consuming of itself by using small and low-energy consumed switching power.Tested by the national household appliances’ quality supervision and inspection center,this device’s electricity-economized rate is 15%-45%,so it has a bright future of market application.福建省科技计划项目资助(No.2004J020)

散发型戊型肝炎与急性乙肝临床特征比较

目的比较散发型急性戊型肝炎与乙肝临床特征。方法分析戊肝和急性乙肝间年龄、性别、肝脏损伤、症状体征以及病程的差异。结果急性肝炎病例中,戊型肝炎最常见(28.0%),急性乙肝次之(9.2%);戊肝平均发病年龄为56.3±13.1岁,急性乙肝为43.0±12.5岁,平均发病年龄戊肝较急性乙肝大(t=4.4723,P<0.0001),均为男性多发;两者常见的临床症状和体征基本相当,但戊肝患者黄疸症状更多见(P<0.05);戊肝病程较急性乙肝长(t=3.7249,P=0.0003);通过年龄性别进行1:1匹配分析,戊肝比急性乙肝对肝脏的损伤程度严重(t=3.5978,P=0.0019)。结论戊肝多见于中老年,急性乙肝多见于中青年,均为男性多于女性。临床特征比较戊肝较急性乙肝更为严重

Design of Analog Signal Output Board Based on Serial DAC8420 Chip

DAC8420是4路12位DAC芯片,具有功耗低、转换速度快和精度高的特点;同时,其与微处理器的I/O接口采用高速串行连接方式,简化了硬件电路设计。在介绍该芯片内部组成结构的基础上,给出一种多类电信号输出采集卡的软硬件设计,并对系统中的抗干扰措施给予一定的介绍。DAC8420 is a quad,12-bit voltage Digital-to-Analog Converter with characteristic of low power consumption,fast conversion speed and high precision,Meanwhile, the I/O interface that it connects with microprocessor adopts the high speed serial connection way,so have simplified the design of hardware circuit.This paper on the basis of recommending structure and function of the chip provides a kind of hardware and software design of analog signal output board of electric signalsat the same time,the paper provides the anti-interference measure

大型水利工程影响区水文生态系统变化及调控研究

《大型水利工程影响区水文生态系统变化及调控研究》系河南省科技攻关计划项目,编号为0224660030。本项目的研究成果：提出采用水文系统变异性研究方法、生态环境演变趋势研究方法,来量化研究大型水利工程水文生态效应;总结提出一种水量～水质～生态耦合系统“多箱模型”(Multi-box modeling method)方法,建立了水文-生态耦合系统模型;提出“基于DEM的流域分布式水文模型研制方法”;基于RS和GIS相结合技术、可持续发展思想,建立了大型水利工程影响区生态环境调控理论框架,为制定一般大型水利工程影响区生态环境调控对策提供理论依据;研究水文生态效应及调控对策;研究生态环境动态变化

Epidemiological characteristics of sporadic hepatitis E in the rural area of Dongtai,Jiangsu Province,China

目的分析2008-2011年江苏省某农村地区戊型病毒性肝炎流行病学特征。方法利用已建立的疑似肝炎症状监测系统主动发现戊型病毒性肝炎患者,并对其流行病学特征进行分析。结果 2008-2011年戊型肝炎所占急性病毒性肝炎比例为27.29%,成为第2个主要病毒性肝炎。戊型肝炎年平均发病率2.2/万,戊肝发病全年散发,冬春季节高发;男性发病率高于女性,发病率随年龄增长逐渐升高,发病平均年龄(55.48±14.32)岁。戊型肝炎病毒株HEV1、4型并存,以HEV4型为主(95.6%)。结论本地戊肝呈散发,中老年高发,男性多于女性,以HEV4型为主。In order to analyze the epidemiologic characteristics of hepatitis E in the rural area of Jiangsu Province during the period of2008-2011,an established monitoring system of suspected hepatitis was used to detect patients of hepatitis E.The study showed that hepatitis E cases accounted for 27.29% of the total acute hepatitis cases during this period,which indicated hepatitis E had become the second major hepatitis in the rural area of Jiangsu Province.The average annual incidence rate of hepatitis E was around 0.22‰.Hepatitis E was sporadic throughout the whole year,with a higher incidence in spring and winter.The morbidity of hepatitis E was higher in men than that in women and was rising with age.The average age of all cases is 55.48±14.32 years.The research also revealed that HEV of genotype 4was the major genotype in the rural area of Jiangsu Province which accounted for 95.6%,while the proportion of genotype 1was 4.4%.In conclusion,hepatitis E in the rural area of Jiangsu Province is sporadic throughout the whole year,and HEV of genotype 4is the major genotype.The incidence of hepatitis E is higher in the middle-aged and old people and it is higher in men than that in women.国家自然科学基金项目(81373061);; 江苏省科技支撑计划(社会发展)项目(BE2013723)资助~