【摘要】：傳統(tǒng)的自助信息服務(wù)系統(tǒng)(PDA)終端平臺(tái)設(shè)備只具有簡(jiǎn)單的讀寫功能,網(wǎng)絡(luò)互動(dòng)能力較差,在文件傳輸中出現(xiàn)較大的數(shù)據(jù)流時(shí)會(huì)造成明顯的網(wǎng)絡(luò)延時(shí);設(shè)計(jì)并實(shí)現(xiàn)了基于ZigBee網(wǎng)絡(luò)的終端PDA平臺(tái)系統(tǒng)設(shè)計(jì);在平臺(tái)設(shè)計(jì)中,引入了主從CPU輪流方式,分擔(dān)設(shè)備交互中產(chǎn)生的海量數(shù)據(jù)流,在外圍電路中,設(shè)計(jì)了專用的SD存儲(chǔ)卡,便于數(shù)據(jù)移植;在原有的平臺(tái)無(wú)線傳輸模塊中,進(jìn)行了鏈路升級(jí),采用分級(jí)路由機(jī)制,有效降低數(shù)據(jù)包的路由延時(shí)。并以教學(xué)PDA為例進(jìn)行開(kāi)發(fā)與試驗(yàn),系統(tǒng)測(cè)試表明:文章設(shè)計(jì)的自助信息服務(wù)系統(tǒng)PDA網(wǎng)絡(luò)下行發(fā)送數(shù)據(jù)在10ms可以完成,誤碼率為0.001%,上行發(fā)送數(shù)據(jù)成功率高達(dá)99.7%;證明該系統(tǒng)具有穩(wěn)定的網(wǎng)絡(luò)性能與實(shí)用性;具有較高的網(wǎng)絡(luò)穩(wěn)定性和很強(qiáng)的實(shí)用價(jià)值。
[Abstract]:The traditional self-service information service system (PDA) terminal platform device only has simple read-write function, the network interaction ability is poor, when the large data stream appears in the file transmission, it will cause obvious network delay. The system design of terminal PDA platform based on ZigBee network is designed and implemented. In the platform design, the master-slave CPU rotation mode is introduced to share the massive data flow generated by the equipment interaction. In the peripheral circuit, a special SD memory card is designed to facilitate the data transfer. In the original platform wireless transmission module, the link is upgraded and hierarchical routing mechanism is adopted to effectively reduce the routing delay of packets. And take the teaching PDA as an example to carry on the development and the experiment, the system test shows: the self-help information service system PDA network downlink transmission data can be completed in the 10ms, the error rate is 0.001%, the up-link sending data success rate is as high as 99.7%; It is proved that the system has stable network performance and practicability, high network stability and strong practical value.
【作者單位】： 平頂山學(xué)院軟件學(xué)院;
【分類號(hào)】：TP368.32
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本文編號(hào)：2442308