在研究傳統(tǒng)家用燃氣報警器的基礎上，以ZigBee協議為平臺，構建mesh網狀網絡實現網絡化的智能語音報警系統(tǒng)。由于傳感器本身的溫度和實際環(huán)境溫度的影響，傳感器標定后采用軟件補償方法。為了減少系統(tǒng)費用，前端節(jié)點采用半功能節(jié)點設備，路由器和協調器采用全功能節(jié)點設備，構建mesh網絡所形成的家庭內部報警系統(tǒng)，通過通用的電話接口連接到外部的公用電話網絡，啟動語音模塊進行報警。實驗結果表明，在2.4 GHz頻率下傳輸，有墻等障礙物的情況下，節(jié)點的傳輸距離大約為35 m，能夠滿足家庭需要，且系統(tǒng)工作穩(wěn)定，但在功耗方面仍需進一步改善。 Abstract: On the basis of studying traditional household gas alarm system, this paper proposed the platform for the ZigBee protocol，and constructed mesh network to achieve network-based intelligent voice alarm system. Because of the sensor temperature and the actual environment temperature, this system design used software compensation after calibrating sensor. In order to reduce system cost, semi-functional node devices were used as front-end node, however, full-function devices were used as routers and coordinator，constructed alarm system within the family by building mesh network，connected to the external public telephone network through the common telephone interface, started the voice alarm module. The results indicate that nodes transmit about 35m in the distance in case of walls and other obstacles by 2.4GHz frequency transmission, this is able to meet family needs and work steadily, but still needs further improvement in power consumption.
標簽： ZigBee 無線智能 家 報警系統(tǒng)
上傳時間： 2013-10-30
上傳用戶：swaylong
為滿足無線網絡技術具有低功耗、節(jié)點體積小、網絡容量大、網絡傳輸可靠等技術要求，設計了一種以MSP430單片機和CC2420射頻收發(fā)器組成的無線傳感節(jié)點。通過分析其節(jié)點組成，提出了ZigBee技術中的幾種網絡拓撲形式，并研究了ZigBee路由算法。針對不同的傳輸要求形式選用不同的網絡拓撲形式可以盡大可能地減少系統(tǒng)成本。同時針對不同網絡選用正確的ZigBee路由算法有效地減少了網絡能量消耗，提高了系統(tǒng)的可靠性。應用試驗表明，采用ZigBee方式通信可以提高傳輸速率且覆蓋范圍大，與傳統(tǒng)的有線通信方式相比可以節(jié)約40%左右的成本。 Abstract: To improve the proposed technical requirements such as low-ower， small nodes， large capacity and reliable network transmission， wireless sensor nodes based on MSP430 MCU and CC2420 RF transceiver were designed. This paper provided network topology of ZigBee technology by analysing the component of the nodes and researched ZigBee routing algorithm. Aiming at different requirements of transmission mode to choose the different network topologies form can most likely reduce the system cost. And aiming at different network to choose the correct ZigBee routing algorithm can effectively reduced the network energy consumption and improved the reliability of the system. Results show that the communication which used ZigBee mode can improve the transmission rate， cover more area and reduce 40% cost compared with traditional wired communications mode.
上傳時間： 2013-10-09
上傳用戶：robter
Explain how to open the Waveform Viewer for Verification ? State how to insert nodes into the Waveform Viewer ? Tell how to assign Stimulus with the Stimulator Selector
標簽： Foundation 仿真
上傳時間： 2013-11-05
上傳用戶：gps6888
Explain how to open the Waveform Viewer for Verification ? State how to insert nodes into the Waveform Viewer ? Tell how to assign Stimulus with the Stimulator Selector
標簽： Foundation 仿真
上傳時間： 2013-10-29
上傳用戶：daguogai
IEEE1394Diag is a GUI application that presents a graphical view of an IEEE1394 network and provides the ability to perform common 1394 operations such as async reads, writes, isoc listens and talks, as well as configuration rom browsing of all nodes present on a bus.
標簽： IEEE 1394 application graphical
上傳時間： 2015-04-02
上傳用戶：familiarsmile
本程序為tcl程序，用于以ns2模擬ad hoc network. 本程序實作50個 nodes 在1000 * 1000公尺內隨意移動的ad hoc network.
上傳時間： 2014-01-27
上傳用戶：Thuan
libraw1394 is the only supported interface to the kernel side raw1394 of the Linux IEEE-1394 subsystem, which provides direct access to the connected 1394 buses to user space. Through libraw1394/raw1394, applications can directly send to and receive from other nodes without requiring a kernel driver for the protocol in question.
標簽： 1394 the interface supported
上傳時間： 2015-08-07
上傳用戶：徐孺
IEEE1394Diag is a GUI application that presents a graphical view of an IEEE1394 network and provides the ability to perform common 1394 operations such as async reads, writes, isoc listens and talks, as well as configuration rom browsing of all nodes pres
標簽： IEEE 1394 application graphical
上傳時間： 2014-12-03
上傳用戶：123啊
This section contains a brief introduction to the C language. It is intended as a tutorial on the language, and aims at getting a reader new to C started as quickly as possible. It is certainly not intended as a substitute for any of the numerous textbooks on C. 2. write a recursive function FIB (n) to find out the nth element in theFibanocci sequence number which is 1,1,2,3,5,8,13,21,34,55,…3. write the prefix and postfix form of the following infix expressiona + b – c / d + e * f – g * h / i ^ j4. write a function to count the number of nodes in a binary tr
標簽： introduction the contains intended
上傳時間： 2013-12-23
上傳用戶：liansi
//Basic packet sending test at the MAC level, used for internal testing only. //This packet test has one node sending out a variety of //differently formatted packets to two assumed destination nodes.
標簽： packet test internal sending
上傳時間： 2014-08-21
上傳用戶：CSUSheep
