基于ARM的温度采集与以太网传输系统的设计     

徐萍  卿粼波  李金平  何小海 《成都信息工程学院学报》2008,23(4):433-437

基于ARM的温度采集与以太网传输系统重点是实现稳定地采集实时温度、批量传送采集结果。系统采用基于ARM内核LPC2214对温度传感器LM235输出的模拟信号进行采集;用DM9000控制以太网传输采集结果。基于DM9000的以太网传输具有较高的可靠性,适合批量数据传输,并且可实现较远距离通信。此外,为方便调试和扩展,设计串口通信模块和JTAG仿真调试接口模块。最终,实现对温度的实时采集与传输。  相似文献   

国家测绘局第三地形测量队（黑龙江第二测绘工程院）     

《测绘与空间地理信息》2009,32(1)

国家测绘局第三地形测量队,即黑龙江第二测绘工程院,是省级文明单位标兵,拥有三十多年的测绘生产经验,具备甲级测绘资质,通过了13B／T19001—2000—ISO9001：2000标准认证,拥有高级工程师22人,工程师40人,业务遍及国内20多个省市及美国、日本等国家,并参与了南极科考,近年来有多项工程获奖。  相似文献   

黑龙江地理信息工程院     

《测绘与空间地理信息》2009,32(1)

黑龙江地理信息工程院成立于1963年,是国家级基础地理信息数据生产基地,是进行航空摄影测量及遥感测绘的专业部门,具有国家测绘局认证的甲级测绘资质,并通过了ISO9001：2000国际质量管理体系认证。  相似文献   

对地勘单位贯彻ISO9000《质量管理和质量保证》系列标准的几点认识     

沈小荣 《青海国土经略》2000,(1)

ISO9000系列标准是一套国际统一的质量管理标准,应用的主体内容是质量管理模式(质量体系)的建立与运行。其对地勘单位走向市场,到社会投标、承揽地勘项目,保证地勘工作成果质量,提高单位在地质市场中的信誉度具有十分重要的意义。  相似文献   

试论质量体系有效性的保持     

付殿东  陈之中  滕磊 《测绘软科学研究》2001,7(1):42-45

提出了保持质量体系有效运行的前提和基础，关键和保证措施，并指出了组织企业保持质量体系持续有效的方法和途径。  相似文献   

IMPACTS OF MONTHLY ANOMALIES OF INTRASEASONAL OSCILLATION OVER SOUTH CHINA SEA AND SOUTH ASIA ON THE ACTIVITY OF SUMMER MONSOON AND RAINFALL IN EASTERN CHINA     

阙志萍  吴凡  毕晨  龙余良  李崇银 《热带气象学报(英文版)》2016,22(2):145-158

The impact of strong (weak) intraseasonal oscillation (ISO) over South China Sea (SCS) and South Asia (SA) in summer on the SCS and SA summer monsoon and the summer rainfall in Eastern China are studied by using the NCEP-NCAR analysis data and the rainfall data of 160 stations in China from 1961 to 2010. It is found that the impacts are significantly different in different months of summer. The study shows that in June and July cyclonic (anticyclonic) atmospheric circulation over SCS and SA corresponds to strong (weak) ISO over SCS. In August, however, strong (weak) ISO over SCS still corresponds to cyclonic (anticyclonic) atmospheric circulation over SA. In June and August cyclonic (anticyclonic) atmospheric circulation over South Asia corresponds to strong (weak) ISO over SA while a strong (weak) ISO corresponds to anticyclonic (cyclonic) atmospheric circulation over SA in July. Besides, in June the strong (weak) ISO over SA corresponds to cyclonic (anticyclonic) atmospheric circulation over SCS, while in July and August the atmospheric circulation is in the same phase regardless of whether the ISO over SA is strong or weak. The impacts of the strong（weak）ISO over SCS on the rainfall of eastern China are similar in June and July, which favors less (more) rainfall in Yangtze-Huaihe Rivers basin but sufficient (deficient) rainfall in the south of Yangtze River. However, the impacts are not so apparent in August. In South Asia, the strong (weak) ISO in July results in less (more) rainfall in the south of Yangtze River but sufficient (deficient) rainfall in Yangtze-Huaihe Rivers basin. The influence on the rainfall in eastern China in June and August is not as significant as in July.  相似文献   

RELATIONSHIP BETWEEN TROPICAL ISO AND TROPICAL CYCLONE ACTIVITY OVER THE SOUTH CHINA SEA     

祝丽娟  王亚非  尹志聪 《热带气象学报(英文版)》2016,22(3):318-329

The relationship between the tropical intra-seasonal oscillation (ISO) and tropical cyclones (TCs) activities over the South China Sea (SCS) is investigated by utilizing the National Centers for Environmental Prediction/National Center for Atmospheric Research (NCEP/NCAR) global reanalysis data and tropical cyclone best-track data from 1949 to 2009. The main conclusions are: (1) A new ISO index is designed to describe the tropical ISO activity over the SCS, which can simply express ISO for SCS. After examining the applicability of the index constructed by the Climate Prediction Center (CPC), we find that the convection spatial scale reflected by this index is too large to characterize the small-scale SCS and fails to divide the TCs activities over the SCS into active and inactive categories. Consequently, the CPC index can’t replace the function of the new ISO index; (2) The eastward spread process of tropical ISO is divided into eight phases using the new ISO index, the phase variation of which corresponds well with the TCs activities over the SCS. TCs generation and landing are significantly reduced during inactive period (phase 4-6) relative to that during active period (phase 7-3); (3) The composite analyses indicate distinct TCs activities over the SCS, which is consistent with the concomitant propagation of the ISO convective activity. During ISO active period, the weather situations are favorable for TCs development over the SCS, e.g., strong convection, cyclonic shear and weak subtropical high, and vice versa; (4) The condensation heating centers, strong convection and water vapor flux divergence are well collocated with each other during ISO active period. In addition, the vertical profile of condensation heat indicates strong ascending motion and middle-level heating over the SCS during active period, and vice versa. Thus, the eastward propagation of tropical ISO is capable to modulate TCs activities by affecting the heating configuration over the SCS.  相似文献   

谈ISO9000质量管理体系在测绘企业中的推广与应用——以焦作市中纬测绘地理信息有限公司为例     

尹祥杰  王辉  黄韫韬 《河南国土资源》2007,(5):48

ISO9000质量管理体系是国际化标准组织(ISO)颁发的国际标准,旨在向全世界推荐一套实用的管理方法和管理模式,推动质量管理,提高产品质  相似文献   

基于ISO14000环境管理体系的土地利用行为约束研究——以烟台开发区为例          下载免费PDF全文

姜义禄  郝小亮 《山东国土资源》2015,31(1):72-74,79

介绍了ISO14000环境管理体系的标准内涵,以PDCA模式为基础,从土地规划、土地保障、土地经营、土地执法4个方面构建出土地利用行为约束体系;分析烟台开发区基于PDCA模式的土地利用行为,结论表明:该模式可有效指导并约束土地利用行为,有利于区域生态环境建设。  相似文献   

正交小波变换研究复杂下垫面边界层的湍流特征   总被引：1，自引：0，他引：1  

罗涛  袁仁民  吴晓庆  邓淑梅 《高原气象》2008,27(6)

小波变换方法具有较好的时频局部特性,非常适合于分析非平稳的湍流信号。本文对35 m铁塔的超声风速测量数据进行了离散正交小波变换,计算了各向同性系数(ISO isotropy coefficient)及小波功率谱,以此对实验场所代表的水陆交际复杂下垫面的近地面层湍流特征进行了研究。ISO系数可以很好地描述实际大气在不同尺度的各向同性特征。根据ISO系数的分布,我们可以通过设定一定的阈值(ISO=0.7)来得到各向同性小涡的分离尺度(记为ISO0.7),即湍流的各向同性尺度范围。研究表明,下垫面对于边界层湍流各向同性特性具有相当大的影响,当风从不同下垫面吹过时ISO0.7尺度的均值具有较明显的差异。同时湍流度和稳定度对湍流各向同性也有一定的影响。对湍流小波功率谱研究表明,功率谱谱幂率在分离出的小涡所处的频段接近于-5/3。而当风从陆面吹过且湍流度较弱时,湍流小波功率谱小涡以分离尺度所对应的频率(fms)为界具有明显的两段趋势:高于fms的频段,谱幂率一般接近-5/3;而低于fms的频段的谱幂率接近-3/3。这反映了下垫面特征对湍流功率谱的影响。同时在不同的风向转变过程中下垫面对功率谱的影响具有差异。  相似文献