共查询到20条相似文献，搜索用时 62 毫秒
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基于LabVIEW虚拟仪器平台开发出的局域网监控报警系统,该系统通过监控服务端采集实时图片,并利用TCP传输协议,将监控现场图像信息实时发送到监控客户端。并通过图像报警模块判断监控区域是否有异常情况发生,从而触发报警,并将报警信号和报警图片实时发送到监控客户端,在监控客户端触发报警。通过本系统进行局域网监控报警测试结果表明:该系统监控稳定,报警灵敏,图像传输保存稳定高效,具有较高的监控安全性,系统构建简单,造价较低,实现了局域网监控报警功能。 相似文献
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用单片微机8051设计的防盗报警系统 总被引：1，自引：0，他引：1
利用单片微机8052设计的防盗报警系统，包括硬件设计和软件设计两部分。该系统可用于宾馆、仓库等，它能对受监测点进行自动监测，一旦出现盗情，能立即报警，并指示被盗的地点。 相似文献
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ＶＳ—８型视频报警系统是一种可对１～８个重要目标进行远距离自动监视的高技术电子产品，软件主机采用Ｚ８０微机系统，通过对主程序框图、主机键盘扫描程序及键盘功能描述，对该报警设备的软件控制系统作了全面的介绍 相似文献
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主要探讨智能家居系统的子模块功能——智能安防报警系统,其工作原理为：以HT48R50A单片机为中央处理器,实现火警、烟警、液化气漏气报警、防盗拨号报警和语音报警.当有警情发生时可以拨号报警并通过报警电话时时监听,同时启动计算机进行网络监控. 相似文献
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智能建筑中火灾自动报警系统的设计 总被引：2，自引：0，他引：2
徐东升 《河北职业技术学院学报》2006,6(1):12-13
探讨了在智能建筑中如何进行火灾自动报警系统、探测区域的划分,探测器、报警控制器、消防联动设备及其控制的设置,提出火灾自动报警系统设计一定要考虑其在连接界面上与智能建筑的适应性。 相似文献
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戴树春 《Journal of Zhangzhou Technical Institute》2006,8(4):34-36,42
本设计对现有车库电动卷帘门电路进行改进，增加了报警系统装置。文中着重介绍无线遥控发射电路及编码芯片PT2262、无线遥控接收电路及饵码芯片PT2272L4的工作原理，给出该报警系统电路设计方案。该设计具有较高的实用性价值。 相似文献
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多功能数字电子钟系统的设计与实现 总被引：2，自引：0，他引：2
曾日波 《乐山师范学院学报》2004,19(12):23-24,27
本系统以89S52单片机作为控制核心，使用串行时钟芯片PCF8563，实现时间的显示设置和闹钟功能。除具有括时钟显示、闹钟功能外，还有温度测量、电压测量及过欠压报警模块、频率测量等功能。实际运行效果良好，并可进行进一步的扩展。 相似文献
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通过调整传感器LC振荡电路参数、改进传感器密封方式及调整传感器在钢轨的安装参数等措施,对兰州石化公司专用线两个人工看守道口报警系统传感器进行改进,成功解决了报警系统误报警、不报警以及不能长周期运行的问题。为道口的安全提供了可靠保证,并且对于同类型道口报警系统传感器的设计改进及现场安装、调整具有借鉴意义。 相似文献
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邓金枝 《湖南科技学院学报》2005,26(6):272-273
大型集贸市场因其人流物流相对集中，故其火灾自动报警控制系统设计则显得尤为重要。以某大型设置中央空调系统的集贸市场为例，对大型集贸市场火灾自动报警控制系统应具备的功能进行了探讨，并对火灾自动报警控制系统的设计分6个方面进行了改进。 相似文献
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根据现场总线系统的结构和技术特点,论述了在船舶机舱监测报警系统中采用现场总线技术的优越性,探讨了利用CAN总线的可行性,提出了基于CAN总线的船舶机舱监测报警模拟系统构造方案,并对该监测报警系统的组成、功能等进行了论述。 相似文献
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《海外英语》2007,(5):10-11
Many college freshmen arrive woefully unprepared to do college work, and as disadvantaged populations continue to grow, the share of the American work force that has made it through college is expected to plummet. Many experts blame that educational failure not just on high schools but also on colleges. School & College, a special report by The Chronicle, looks at efforts to fix the system. What reforms would better prepare students for college? What should schools and colleges be doing differently? How should state and federal officials help? 相似文献
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罗艳萍 《读与写:教育教学刊》2008,5(6)
The communication of people partially is the communication of cultures. Culture has a direct effect on international commercial activities in all aspects. Different conceptions about time, space, equality, law and the like, lead people to deal with things in different ways. So to know cultures of the counterpart is to facil-itate our enterprises so as to have a smooth and successful communication in commercial activity. 相似文献
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《海外英语》2007,(4):36
There are numbers of crossroads on our long and unpredictable life journey where we totally have no idea about which direction to choose. No matter what our decision is, we should not turn back, but face the music and go ahead instead. I am this kind of girl who always does try without regretting, one example is how I dealt with my love. 相似文献
16.
Migration occurs behind a variety of reasons and has a great effect on the whole world. People may migrate in order to improve their economic situation, or in order to escape civil strife, persecution, and environmental disasters. The impact of migration is complex, bringing both benefits anddisadvantages. This paper briefly talks about the causes of migration, the allocation of benefits, and the ways in which individual countries and the international community deal with this important subject. 相似文献
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Richard Denner 《海外英语》2007,(4):14-15
Rosco and I wait for the fishermen to return.I sit at a wooden bench near the store at Mt.Baker Resort and watch the clouds change shape. Rosco has my belt around his neck and an eight foot tow chain hooked to a tree. Dogs must be on a leash. Ducks and rabbits are loose. 相似文献
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Given a graph G,a subgraph C is called a clique of G if C is a complete subgraph of G maximal under inclusion and |C|≥2. A clique-transversal set S of G is a set of vertices of G such that S meets all cliques of G. The clique-transversal number, denoted as TC (G), is the minimum cardinality of a clique-transversal set in G. The clique-graph of G, denoted as K (G), is the graph obtained by taking the cliques of G as vertices, and two vertices are adjacent if and only if the corresponding cliques in G have nonempty intersection. Let F be a class of graphs G such that F={G|K(G) is a tree}. In this paper the graphs in F having independent clique-transversal sets are shown and thus TC (G)/|G|≤1/2 for all G ∈ F. 相似文献
19.
Sister Carrie is one of the most controversial characters in American literature.Thought as a "fallen woman" firstly,she was defined as a "new woman" by some critics later. However, by digging into the motivaton behind the whole process of Carrie's "success", the relationship between Carrie and her creator (the author), the social conditions of then American, it can be found that Carrie has never been free-standing on her thought and she has never found her real-sdf even after becoming a famous actress. In a society dominated by mass consumerism Carrie is only an adherent of her own desires. She also is a representative of all those country girls flooded into cities, a symbol and a sacrifice of the urbanization of America in a time countryside was overcome by cities. 相似文献