DSP极低码率的矿井远程视频监控系统

目前远程视频监控系统已经成为计算机监控系统的重要分支，同时也是人们研究的热点和难点之一。国内外现有的远程监控系统大多基于光纤，而光纤如果遇到机械冲击、碰撞等都会造成光缆断缆或断芯，光缆断裂后。很难快速修复。且修复设备复杂。普通用户根本无法进行焊接修复，再加上光端机价格较高，这些都限制了光纤远程监控系统的应用和普及。为了解决这个问题，人们找到了价格相对便宜、维护十分简单的极低比特率双绞线解决方案，可视电话就是这样一种产品，但价格因素影响了它的推广。本文以TI低成本DSP芯片F206为例，介绍一种基于这一芯片的极低码率双绞线视频图像监控系统，这是一套非常经济、实用且具有广播能力的远程视频图像监控系统。本文不仅给出了整体方案，还就系统实现的一些难点进行了详细解析。     

经济型矿井远程网络摄像机系统

目前远程视频监控系统已经成为计算机监控系统的重要分支，同时也是人们研究的热点和难点之一。国内外现有的远程监控系统大多基于光纤，而光纤如果遇到机械冲击、碰撞等都会造成光缆断缆或断芯，光缆断裂后，很难快速侈复，且侈复设备复杂，普通用户根本无法进行焊接修复，再加上光端机价格较高，这些都限制了光纤远程监控系统的应用和普及。为了解决这个问题，人们找到了价格相对便宜、维护十分简单的极低比特率双绞线解决方案。文中分别以TI低成本DSP芯片F206和TI高性能DSP芯片C6711为例，介绍两种基于DSP芯片的极低码率双绞线网络摄像机系统，这是两套非常经济、实用且具有广播能力的远程矿井网络摄像机系统。     

基于DSP的矿井远视频监控系统

国内外现有的远程监控系统多基于光纤,而光纤如遇到机械冲击、碰撞造成断缆或断芯后,很难快速修复,且修复设备复杂.针对这一个问题,价格相对便宜、维护十分简单的极低比特率双绞线成为解决的方案.以TI低成本DSP芯片F206为例,介绍了一种基于这一芯片的极低码率双绞线视频图像监控系统,给出了整体方案,并就系统实现的一些关键点进行了详细解析.图5,参5.     

自主导航水下勘测机器人

该文设计的主要思路是应用网络来完成图像的识别并且进行处理,与在水下工作的机器人系统进行通信,该系统成功制作完毕后能够通过联网进行视频动画的传输。在光缆的应用上选择使用RS485作为控制总线,光缆线完成电信号的传输,通过加在光缆和以太网之间的光纤收发器,进行对光电信号的转换。光纤收发器的一端连接交换机,而交换机的一端连接双绞线直到水面平台。在创新应用方面,该设计提出了通过网络远程监控水下勘测机器人的功能完成度。在实际应用中,一些专家不能亲临现场指导,这样通过网络远程监控就能完成,节省了人力、物力、财力,使得水下勘测机器人的技术更加科技化。     

一种基于多摄像头的大场景远程实时监控系统

为了满足对大场景进行监控的需求,设计了一种基于多摄像头的远程实时监控系统.系统主要由视频采集、网络传输、远程图像拼接与显示3个部分组成.视频采集部分以FPGA为处理器,通过控制TW2867视频解码芯片实现4路视频同时采集;网络传输部分通过控制千兆以太网收发芯片RTL8211EG,并采用UDP协议实现了视频数据到上位机的高速传输;上位机接收多摄像头数据后,使用OpenCV及GPU完成了图像的快速拼接和显示.采用千兆交换机构建了8个摄像头的大场景远程实时监控系统,测试结果表明:系统视频传输速率可达912 M B;初始化完成后,全景图像拼接时间只需0.38 s;视频刷新速度可以达到15帧/s.所设计的系统可以扩展连接更多的摄像头,满足了更大场景拼接的需求.     

基于单片机的网络视频图像传输系统的设计与实现

采用89s52单片机,TCP/IP协议栈芯片W3100A和图像采集模块JPEG300,设计并实现了基于网络的视频图像传输系统,可用于远程家居网络图像的实时监控.     

基于TMS320DM642芯片的MPEG4SVP视频编码的实现

本文在TI公司的TMS320DM642芯片上实现了MPEG4SVP算法,并针对DSP硬件系统对算法进行了优化,实现了系统的实时性,可应用于实时视频监控以及远程视频图像传输等多方面.     

基于Hi3512的3G视频监控终端的设计与实现

为了满足交通远程视频监控和信息服务需求的要求,通过对新一代的移动视频监控系统进行需求分析,提出了一种基于GPS定位技术和3G网络的视频监控系统设计方法.采用嵌入式开发技术进行视频监控终端的设计与实现:选用海思Hi3512作为嵌入式CPU芯片,片内集成了H.264硬件编解码视频处理单元;可通过无线和有线网络2种方式传输视...     

基于网络的数字视频监控系统

提出了一种基于网络的数学视频监控系统,该系统具有视频、解码、网络传输、图像储存、图像索引回放、摄像机远程控制和图像内容报警等功能,因采用了基于视频硬件压缩芯片以及快速以太网技术,该系统的图像质量和帧率指标远远高于一般电话线和软件压缩的监控系统。     

4G网络视频监控在电力系统上的应用

从4G技术的特点和优势出发,提出了一种基于4G网络的视频监控系统,详述了该系统的功能组成、组网方案和系统特点.该系统以4G网络技术为基础,实现了在电力系统工作中的远程图像采集、实时视频监控等功能.     

Markedness and its Interpretation in Language Use

Language markedness is a common phenomenon in languages, and is reflected from hearing, vision and sense, i.e. the variation in the three aspects such as phonology, morphology and semantics. This paper focuses on the interpretation of markedness in language use following the three perspectives, i.e. pragmatic interpretation, psychological interpretation and cognitive interpretation, with an aim to define the function of markedness.     

Lower Paleozoic oil relationships within Williston Basin, Canada

The Williston Basin is a significant petroleum province, containing oil production zones that include the Middle Cambrian to Lower Ordovician, Upper Ordovician, Middle Devonian, Upper Devonian and Mississippian and within the Jurassic and Cretaceous. The oils of the Williston Basin exhibit a wide range of geochemical characteristics defined as "oil families", although the geochemical signature of the Cambrian Deadwood Formation and Lower Ordovician Winnipeg reservoired oils does not match any "oil family". Despite their close stratigraphic proximity, it is evident that the oils of the Lower Palaeozoic within the Williston Basin are distinct. This suggests the presence of a new "oil family" within the Williston Basin. Diagnostic geochemical signatures occur in the gasoline range chromatograms, within saturate fraction gas chromatograms and biomarker fingerprints. However, some of the established criteria and cross-plots that are currently used to segregate oils into distinct genetic families within the basin do not always meet with success, particularly when applied to the Lower Palaeozoic oils of the Deadwood and Winnipeg Formation.     

An Analysis of Catherine＇s Character——Wuthering Heights

Wuthering Heights, Emily Bronte＇s only novel, was published in December of 1847 under the pseudonym Ellis Bell. The book did not gain immediate success, but it is now thought one of the finest novels in the English language. Catherine is the key character of this masterpiece, because everybody and everything center on her though she had a short life. We can understand this masterpiece better if we know Catherine well.     

Characterization of Ordovician carbonate reservoirs, southeastern Saskatchewan, Canada

The discovery of the prolific Ordovician Red River reservoirs in 1995 in southeastern Saskatchewan was the catalyst for extensive exploration activity which resulted in the discovery of more than 15 new Red River pools. The best yields of Red River production to date have been from dolomite reservoirs. Understanding the processes of dolomitization is, therefore, crucial for the prediction of the connectivity, spatial distribution and heterogeneity of dolomite reservoirs.The Red River reservoirs in the Midale area consist of 3～4 thin dolomitized zones, with a total thickness of about 20 m, which occur at the top of the Yeoman Formation. Two types of replacement dolomite were recognized in the Red River reservoir: dolomitized burrow infills and dolomitized host matrix. The spatial distribution of dolomite suggests that burrowing organisms played an important role in facilitating the fluid flow in the backfilled sediments. This resulted in penecontemporaneous dolomitization of burrow infills by normal seawater. The dolomite in the host matrix is interpreted as having occurred at shallow burial by evaporitic seawater during precipitation of Lake Almar anhydrite that immediately overlies the Yeoman Formation. However, the low δ18O values of dolomited burrow infills (-5.9‰～ -7.8‰, PDB) and matrix dolomites (-6.6‰～ -8.1‰, avg. -7.4‰ PDB) compared to the estimated values for the late Ordovician marine dolomite could be attributed to modification and alteration of dolomite at higher temperatures during deeper burial, which could also be responsible for its 87Sr/86Sr ratios (0.7084～0.7088) that are higher than suggested for the late Ordovician seawaters (0.7078～0.7080). The trace amounts of saddle dolomite cement in the Red River carbonates are probably related to "cannibalization" of earlier replacement dolomite during the chemical compaction.     

Design and analysis of generic LBS application developing platform

Location based services is promising due to its novel working style and contents.A software platform is proposed to provide application programs of typical location based services and support new applications developing efficiently. The analysis shows that this scheme is easy implemented, low cost and adapt to all kinds of mobile nework system.     

橡胶颗粒沥青混合料低温抗裂性试验研究

以AC-13级配为基础,将橡胶颗粒代替部分集料掺入混合料中,以低温弯曲试验为评价方法对不同橡胶颗粒掺量下沥青混合料的低温抗裂性进行研究,并引入应变能密度值对混合料的低温抗裂性进行综合评价.试验结果表明:橡胶颗粒沥青混合料试件的破坏微应变均超过2 300,满足冬寒区的技术指标;无论是否掺加橡胶颗粒,随着温度的下降,沥青混合料破坏时的最大弯拉强度增大,弯拉应变降低,劲度模量增大;弯曲应变能密度在胶粒掺量为1%左右时具有较大的弯曲应变能密度值,此时橡胶颗粒沥青混合料具有较好的低温抗裂性.     

A computer generator for randomly layered structures

AcomputergeneratorforrandomlylayeredstructuresYUJia shun1,2,HEZhen hua2(1.TheInstituteofGeologicalandNuclearSciences,NewZealand;2.StateKeyLaboratoryofOilandGasReservoirGeologyandExploitation,ChengduUniversityofTechnology,China)Abstract:Analgorithmisintrod…     

低渗透非均质砂岩油藏启动压力梯度研究

理论推导与室内实验相结合,建立了低渗透非均质砂岩油藏启动压力梯度确定方法。首先借助油藏流场与电场相似的原理,推导了非均质砂岩油藏启动压力梯度计算公式。其次基于稳定流实验方法,建立了非均质砂岩油藏启动压力梯度测试方法。结果表明:低渗透非均质砂岩油藏的启动压力梯度确定遵循两个等效原则。平面非均质油藏的启动压力梯度等于各级渗透率段的启动压力梯度关于长度的加权平均;纵向非均质油藏的启动压力梯度等于各渗透率层的启动压力梯度关于渗透率与渗流面积乘积的加权平均。研究成果可用于有效指导低渗透非均质砂岩油藏的合理井距确定,促进该类油藏的高效开发。     

On Tragic Consciousness In The Works By Ernest Hemingway

As an American modern novelist who were famous in the literary world, Hemingway was not a person who always followed the trend but a sharp observer. At the same time, he was a tragedy maestro, he paid great attention on existence, fate and end-result. The dramatis personae's tragedy of his works was an extreme limit by all means tragedy on the meaning of fearless challenge that failed. The beauty of tragedy was not produced on the destruction of life, but now this kind of value was in the impact activity. They performed for the reader about the tragedy on challenging for the limit and the death.     

Quantitative trait loci （QTLs） for quality traits related to protein and starch in wheat

Quality traits in wheat （Triticum aestirum L.） were studied by quantitative trait locus （QTL） analysis in a recombinant inbred line （RIL） population, a set of 131 lines derived from Chuan 35050 × Shannong 483 cross （ChSh）. Grains from RILs were assayed for 21 quality traits related to protein and starch. A total of 35 putative QTLs for 19 traits with a single QTL explaining 7.99-40.52% of phenotypic variations were detected on 10 chromosomes, 1D, 2A, 2D, 3B, 3D, 5A, 6A, 6B, 6D, and 7B. The additive effects of 30 QTLs were positive, contributed by Chuan 35050, the remaining 5 QTLs were negative with the additive effect contributed by Shannong 483. For protein traits, 15 QTLs were obtained and most of them were located on chromosomes 1 D, 3B and 6D, while 20 QTLs for starch traits were detected and most of them were located on chromosomes 3D, 6B and 7B. Only 7 QTLs for protein and starch traits were co-located in three regions on chromosomes 1D, 2A and 2D. These protein and starch trait QTLs showed a distinct distribution pattern in certain regions and chromosomes. Twenty-two QTLs were clustered in 6 regions of 5 chromosomes. Two QTL clusters for protein traits were located on chromosomes 1D and 3B, respectively, three clusters for starch traits on chromosomes 3D, 6B and 7B, and one cluster including protein and starch traits on chromosome 1D.