This a two node test, requires a coordinator and an RFD. The coordinator and node simply ping-pong a packet back and forth, and print out the RSSI byte. The RFD waits before bouncing it back, while the coordinator responds immediately.
標(biāo)簽: node coordinator coordinator and
上傳時(shí)間: 2013-12-24
上傳用戶:ardager
This demonstration shows how a ZigBee coordinator can be set up. This demo allows the Demonstration Board (PICDEM Z or Explorer 16) to act as either a "Switching Load Controller" (e.g. a light) or a "Switching Remote Control" (e.g. a switch) as defined by the Home Controls, Lighting profile. It is designed to interact with a second Demonstration board programmed with the Demo RFD project
標(biāo)簽: This demonstration Demonstratio coordinator
上傳時(shí)間: 2014-01-18
上傳用戶:dianxin61
David Vernon is the coordinator of the European Network for the Advancement of Artificial Cognitive Systems and he is a Visiting Professor of Cognitive Systems at the University of Genoa. He is also a member of the management team of the RobotCub integrated working on the development of open-source cognitive humanoid robot. Over the past 27 years, he has held positions at Westinghouse Electric, Trinity College Dublin, the European Commission, the National University of Ireland Maynooth, Science Foundation Ireland, and Etisalat University College. He has authored two and edited three books on computer vision and has published over eighty papers in the fields of Computer Vision, Robotics, and Cognitive Systems. His research interests include Fourier-based computer vision and enactive approaches to cognition. He is currently a Professor at Etisalat University College in Sharjah-United Arab Emirates, focusing on Masters programs by research in Computing fields.".[1]
標(biāo)簽: the coordinator Advancement Artificial
上傳時(shí)間: 2014-01-08
上傳用戶:netwolf
在研究傳統(tǒng)家用燃?xì)鈭?bào)警器的基礎(chǔ)上,以ZigBee協(xié)議為平臺(tái),構(gòu)建mesh網(wǎng)狀網(wǎng)絡(luò)實(shí)現(xiàn)網(wǎng)絡(luò)化的智能語音報(bào)警系統(tǒng)。由于傳感器本身的溫度和實(shí)際環(huán)境溫度的影響,傳感器標(biāo)定后采用軟件補(bǔ)償方法。為了減少系統(tǒng)費(fèi)用,前端節(jié)點(diǎn)采用半功能節(jié)點(diǎn)設(shè)備,路由器和協(xié)調(diào)器采用全功能節(jié)點(diǎn)設(shè)備,構(gòu)建mesh網(wǎng)絡(luò)所形成的家庭內(nèi)部報(bào)警系統(tǒng),通過通用的電話接口連接到外部的公用電話網(wǎng)絡(luò),啟動(dòng)語音模塊進(jìn)行報(bào)警。實(shí)驗(yàn)結(jié)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(diǎn)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(jìn)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(biāo)簽: ZigBee 無線智能 家 報(bào)警系統(tǒng)
上傳時(shí)間: 2013-10-30
上傳用戶:swaylong
ZigBee技術(shù)是一種應(yīng)用于短距離范圍內(nèi),低傳輸數(shù)據(jù)速率下的各種電子設(shè)備之間的無線通信技術(shù)。ZigBee名字來源于蜂群使用的賴以生存和發(fā)展的通信方式,蜜蜂通過跳ZigZag形狀的舞蹈來通知發(fā)現(xiàn)的新食物源的位置、距離和方向等信息,以此作為新一代無線通訊技術(shù)的名稱。ZigBee過去又稱為“HomeRF Lite”、“RF-EasyLink”或“FireFly”無線電技術(shù),目前統(tǒng)一稱為ZigBee技術(shù)。 2、ZigBee技術(shù)的特點(diǎn) 自從馬可尼發(fā)明無線電以來,無線通信技術(shù)一直向著不斷提高數(shù)據(jù)速率和傳輸距離的方向發(fā)展。例如:廣域網(wǎng)范圍內(nèi)的第三代移動(dòng)通信網(wǎng)絡(luò)(3G)目的在于提供多媒體無線服務(wù),局域網(wǎng)范圍內(nèi)的標(biāo)準(zhǔn)從IEEE802.11的1Mbit/s到IEEE802.11g的54Mbit/s的數(shù)據(jù)速率。而當(dāng)前得到廣泛研究的ZigBee技術(shù)則致力于提供一種廉價(jià)的固定、便攜或者移動(dòng)設(shè)備使用的極低復(fù)雜度、成本和功耗的低速率無線通信技術(shù)。這種無線通信技術(shù)具有如下特點(diǎn): 功耗低:工作模式情況下,ZigBee技術(shù)傳輸速率低,傳輸數(shù)據(jù)量很小,因此信號(hào)的收發(fā)時(shí)間很短,其次在非工作模式時(shí),ZigBee節(jié)點(diǎn)處于休眠模式。設(shè)備搜索時(shí)延一般為30ms,休眠激活時(shí)延為15ms,活動(dòng)設(shè)備信道接入時(shí)延為15ms。由于工作時(shí)間較短、收發(fā)信息功耗較低且采用了休眠模式,使得ZigBee節(jié)點(diǎn)非常省電,ZigBee節(jié)點(diǎn)的電池工作時(shí)間可以長(zhǎng)達(dá)6個(gè)月到2年左右。同時(shí),由于電池時(shí)間取決于很多因素,例如:電池種類、容量和應(yīng)用場(chǎng)合,ZigBee技術(shù)在協(xié)議上對(duì)電池使用也作了優(yōu)化。對(duì)于典型應(yīng)用,堿性電池可以使用數(shù)年,對(duì)于某些工作時(shí)間和總時(shí)間(工作時(shí)間+休眠時(shí)間)之比小于1%的情況,電池的壽命甚至可以超過10年。 數(shù)據(jù)傳輸可靠:ZigBee的媒體接入控制層(MAC層)采用talk-when-ready的碰撞避免機(jī)制。在這種完全確認(rèn)的數(shù)據(jù)傳輸機(jī)制下,當(dāng)有數(shù)據(jù)傳送需求時(shí)則立刻傳送,發(fā)送的每個(gè)數(shù)據(jù)包都必須等待接收方的確認(rèn)信息,并進(jìn)行確認(rèn)信息回復(fù),若沒有得到確認(rèn)信息的回復(fù)就表示發(fā)生了碰撞,將再傳一次,采用這種方法可以提高系統(tǒng)信息傳輸?shù)目煽啃浴M瑫r(shí)為需要固定帶寬的通信業(yè)務(wù)預(yù)留了專用時(shí)隙,避免了發(fā)送數(shù)據(jù)時(shí)的競(jìng)爭(zhēng)和沖突。同時(shí)ZigBee針對(duì)時(shí)延敏感的應(yīng)用做了優(yōu)化,通信時(shí)延和休眠狀態(tài)激活的時(shí)延都非常短。 網(wǎng)絡(luò)容量大:ZigBee低速率、低功耗和短距離傳輸?shù)奶攸c(diǎn)使它非常適宜支持簡(jiǎn)單器件。ZigBee定義了兩種器件:全功能器件(FFD)和簡(jiǎn)化功能器件(RFD)。對(duì)全功能器件,要求它支持所有的49個(gè)基本參數(shù)。而對(duì)簡(jiǎn)化功能器件,在最小配置時(shí)只要求它支持38個(gè)基本參數(shù)。一個(gè)全功能器件可以與簡(jiǎn)化功能器件和其他全功能器件通話,可以按3種方式工作,分別為:個(gè)域網(wǎng)協(xié)調(diào)器、協(xié)調(diào)器或器件。而簡(jiǎn)化功能器件只能與全功能器件通話,僅用于非常簡(jiǎn)單的應(yīng)用。一個(gè)ZigBee的網(wǎng)絡(luò)最多包括有255個(gè)ZigBee網(wǎng)路節(jié)點(diǎn),其中一個(gè)是主控(Master)設(shè)備,其余則是從屬(Slave)設(shè)備。若是通過網(wǎng)絡(luò)協(xié)調(diào)器(Network coordinator),整個(gè)網(wǎng)絡(luò)最多可以支持超過64000個(gè)ZigBee網(wǎng)路節(jié)點(diǎn),再加上各個(gè)Network coordinator可互相連接,整個(gè)ZigBee網(wǎng)絡(luò)節(jié)點(diǎn)的數(shù)目將十分可觀。 兼容性:ZigBee技術(shù)與現(xiàn)有的控制網(wǎng)絡(luò)標(biāo)準(zhǔn)無縫集成。通過網(wǎng)絡(luò)協(xié)調(diào)器(coordinator)自動(dòng)建立網(wǎng)絡(luò),采用載波偵聽/沖突檢測(cè)(CSMA-CA)方式進(jìn)行信道接入。為了可靠傳遞,還提供全握手協(xié)議。
標(biāo)簽: zigbee
上傳時(shí)間: 2013-11-24
上傳用戶:siguazgb
MicroChip Zigbee協(xié)議棧開源代碼,版本1.0-3.3,支持coordinator\router\rfd。
標(biāo)簽: MicroChip Zigbee 協(xié)議棧 代碼
上傳時(shí)間: 2014-01-07
上傳用戶:四只眼
該代碼為Jennic的基于IEEE802.15.4協(xié)議的Zigbee協(xié)議棧星型網(wǎng)源代碼,內(nèi)有coordinator和endpoint代碼,一個(gè)網(wǎng)絡(luò)可以有多個(gè)endpoint但是只有一個(gè)coordinator!
標(biāo)簽: Jennic Zigbee IEEE 802
上傳時(shí)間: 2014-01-17
上傳用戶:ippler8
本代碼為Jennic公司芯片JN5121,基于Zigbee協(xié)議棧的無線傳感網(wǎng)絡(luò),包含有coordinator和Router的源代碼,可以所有設(shè)備形成一個(gè)Mesh網(wǎng)。最大的路由深度為10級(jí),最大節(jié)點(diǎn)數(shù)為2萬。
上傳時(shí)間: 2013-12-13
上傳用戶:xcy122677
代碼為Jennic的基于IEEE802.15.4協(xié)議棧星型網(wǎng)源代碼,內(nèi)有coordinator和endpoint代碼,只有MAC層,網(wǎng)絡(luò)層用戶可以自行編寫!
上傳時(shí)間: 2013-12-24
上傳用戶:417313137
MicroChip Zigbee協(xié)議棧開源代碼,版本V1.0-3.8和V1.0-3.8.1,支持coordinator\router\rfd
標(biāo)簽: MicroChip Zigbee 協(xié)議棧 代碼
上傳時(shí)間: 2014-12-21
上傳用戶:xc216
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