对讲系统

This thesis introduces the whole project and each module on exploitation, for instance:net transmission module,MPEG4 image serve module,database module, history track record module,sound talk-back module and so on .

本文介绍了本系统的方案设计以及各个模块的开发实现，其中包括：网络传输模块、MPEG4图像服务模块、数据库模块、历史记录模块以及声音对讲模块等，设计方案是一套专门面向电力行业的变电站遥视警戒系统，目前已成功的运用于苏州电力的变电站远程视频监控中，实现了变电站视频、音频、数据的远程传输、控制及记录。

Based on the study of adaptive echo cancellation techniques, an echo cancellation scheme without the need for double talk detection is presented.

首次提出了无双端对讲检测回声抵消系统的概念和框架，突破了传统自适应回声抵消技术必须进行双端对讲检测的限制。

The company's main business scope are: camera products, monitoring systems, alarm systems, weak construction projects, security projects, background music; intelligent parking management system, intelligent building community, building intercom; hotel information management software , hotel smart door lock system and so on dedicated to provide users with information technology solutions and a full range of services.

本公司的主要经营范围是：摄像机产品、监控系统、报警系统、弱电建设工程、安防工程、背景音乐；停车场智能化管理系统、小区智能化建设、楼宇对讲；酒店信息化管理软件、酒店专用智能门锁系统等等，为用户提供信息化建设解决方案及全方位的服务。

Cell intelligent management system which sets networking visual intercom, ext household intercom, four anti-theft alarm Standoff family, import and export access and credit card from a defended position, password lock and other functions, and similar products, more powerful and technologically more advanced, and has been successfully installed in major national projects.

其中小区智能化管理系统集联网可视对讲、分机户户对讲、四防区家庭防盗报警、出入口门禁及刷卡撤防、密码开锁等功能于一体，与同类产品比较，功能更强大，技术更先进，并已成功安装在全国各大工程项目。

Based on modernize and high and new technology, we are engaged in many kinds of developing, production, selling, and installation for the intelligent system and building talkback intelligent system.

江苏恒博电子科技发展有限公司，是一家位于中国大陆长江三角洲地区有着较强实力的专业从事各智能化系统和楼宇对讲智能化系统研发、生产、销售和安装为一体的现代化高新技术企业。

The fourth line of defense Road safety: from networking-floor寓a visual Talkback System can be Xianduorenyuan shut stairs and prevent foreign staff four-string.

第四道安全防线：由联网型楼寓可视对讲系统构成，可将闲杂人员拒之梯口外，防止外来人员四处游串。

Works - mainly undertake the following business: intelligent building, smart systems integration weak plot lump-sum engineering, integrated wiring systems engineering, computer network systems integration engineering, computer room engineering, earthing, lightning protection engineering, anti-theft alarm, closed circuit monitoring system , public radio, background music systems engineering,(offices, schools, factories and karaoke OK) multi-function room audio-visual, frequency, and conferencing systems, lighting, sound systems engineering, IC card access control, electric door, video intercom doorbell system engineering , parking autotoll systems engineering, remote telephone, video conferencing systems engineering company based in Guangdong, for the country, major customers, including banks, tax, post and telecommunications, railway, companies, state organs, the property companies.

工程方面-主要承接以下业务：智能大厦、智能小区弱电系统集成总包工程、综合布线系统工程、计算机网络系统集成工程、计算机机房工程、接地、防雷工程、防盗报警、闭路监控系统工程、公共广播、背景音乐系统工程、（机关、学校、工厂及卡拉OK）多功能厅音视、频及会议系统、灯光音响系统工程、门禁IC卡、电动门、可视对讲门铃系统工程、停车场自动收费系统工程、远程电话、电视会议系统工程、公司立足于广东、面向全国，主要客户包括银行、税务、邮电、铁路、公司、国家机关、物业公司等。

Based on the thorough analyzing function and practical value which amplifying call and telephone talk system should have, this thesis proposed the hardware and software scheme, which PC with software program controls system to work hormonally, and presented the introduction of hardware-circuit and software-realizati- on processes in detail.

本扩音对讲电话系统广泛应用于石油、化工、冶金、医药、煤炭等行业的生产场所，满足在此类易燃、易爆、强噪声的特定场合下对通信系统的要求。本论文通过对扩音对讲电话系统所应具有的功能、以及其实用价值进行深入分析的基础上，提出了单片机结合软件程序控制系统协调工作的软/硬件方案，并且给出了详细的硬件电路介绍以及软件实现机理。

At the same time, the system is integrated with many subsystems such as Home Safe Defense System, Door Access System, Perimeter Defense System, Building Video Intercommunication System, etc.

同时本系统集成了家庭安防系统、门禁系统、周界防范系统、楼宇可视对讲等诸多子系统。

The wireless digital trunking intercommunication system will be activated during the games, and the interphones will be provided to personnel such as the liaison officer of each delegation for communicating, as a more flexible communication method for the game management, game process control, and emergency

在比赛期间将启用无线集群对讲系统，提供给代表团联络官等人员使用，为运动会竞赛管理、比赛过程控制、应急联络等提供更加灵活的通信手段。

Do you know, i need you to come back

你知道吗，我需要你回来

Yang yinshu、Wang xiangsheng、Li decang,The first discovery of haemaphysalis conicinna.

1〕 杨银书，王祥生，李德昌。安徽省首次发现嗜群血蜱。