【摘要】：傳統(tǒng)的自助信息服務(wù)系統(tǒng)(PDA)終端平臺設(shè)備只具有簡單的讀寫功能,網(wǎng)絡(luò)互動能力較差,在文件傳輸中出現(xiàn)較大的數(shù)據(jù)流時會造成明顯的網(wǎng)絡(luò)延時;設(shè)計并實現(xiàn)了基于ZigBee網(wǎng)絡(luò)的終端PDA平臺系統(tǒng)設(shè)計;在平臺設(shè)計中,引入了主從CPU輪流方式,分擔設(shè)備交互中產(chǎn)生的海量數(shù)據(jù)流,在外圍電路中,設(shè)計了專用的SD存儲卡,便于數(shù)據(jù)移植;在原有的平臺無線傳輸模塊中,進行了鏈路升級,采用分級路由機制,有效降低數(shù)據(jù)包的路由延時。并以教學PDA為例進行開發(fā)與試驗,系統(tǒng)測試表明:文章設(shè)計的自助信息服務(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99.7%;證明該系統(tǒng)具有穩(wěn)定的網(wǎng)絡(luò)性能與實用性;具有較高的網(wǎng)絡(luò)穩(wěn)定性和很強的實用價值。
[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】： 平頂山學院軟件學院;
【分類號】：TP368.32
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本文編號：2442308