基于蜂窩網(wǎng)絡(luò)的無線抄表系統(tǒng)

1、i基于蜂窩網(wǎng)絡(luò)的無線抄表系統(tǒng)基于蜂窩網(wǎng)絡(luò)的無線抄表系統(tǒng)摘要長(zhǎng)期以來，三表數(shù)據(jù)抄送問題都是相關(guān)供應(yīng)部門非常想解決但又得不到切實(shí)解決的問題。在行業(yè)信息化過程之中，戶表數(shù)據(jù)的自動(dòng)化抄送具有非常重大的意義，因?yàn)閼舯頂?shù)據(jù)是相關(guān)行業(yè)銷售過程中最原始的數(shù)據(jù)，這個(gè)數(shù)據(jù)的準(zhǔn)確度和及時(shí)性直接影響了行業(yè)內(nèi)部其它信息化水平。目前使用的基于無線數(shù)傳模塊的抄表系統(tǒng)都是采用單跳的通信方式，由于射頻芯片發(fā)射功率的限制，其覆蓋范圍有限，會(huì)出現(xiàn)許多盲點(diǎn)。本文在單跳方式的基

2、礎(chǔ)上，提出了一種自動(dòng)搜索的尋的算法，通過中繼的轉(zhuǎn)發(fā)來實(shí)現(xiàn)多跳，擴(kuò)大覆蓋范圍。關(guān)鍵詞關(guān)鍵詞：無線抄表，組網(wǎng)，射頻芯片，自動(dòng)搜索目錄摘要................................................................................................................................iABSTRACTABSTRACT.........

3、...............................................................................................................iiii第一章第一章緒論緒論...............................................................................................

4、.....................11.1自動(dòng)抄表的背景...................................................11.2自動(dòng)抄表的通信方式...............................................31.3無線抄表技術(shù)的特點(diǎn)及面臨的問題...................................41.4ZigBee簡(jiǎn)介...........

5、...........................................61.4.1ZigBee技術(shù)簡(jiǎn)介..................................................61.4.2ZigBee技術(shù)特點(diǎn)..................................................81.5本文的主要研究工作及各章節(jié)安排..........................

6、.........9第二章第二章無線通信的主要技術(shù)無線通信的主要技術(shù)......................................................................................11112.1介質(zhì)及頻段選擇..................................................112.2調(diào)制技術(shù)...........................

7、.............................122.3擴(kuò)頻技術(shù)........................................................142.3.1直接序列擴(kuò)頻....................................................162.3.2跳頻....................................................

8、........162.3.3跳時(shí)............................................................172.3.4線性調(diào)頻........................................................172.4本章小結(jié)........................................................18第三章第三章無線抄

9、表方案無線抄表方案..................................................................................................19193.1課題研究的意義..................................................193.2信道接入概述......................................

10、..............203.3尋的算法........................................................213.2.1窮舉法..........................................................213.2.2區(qū)域算法........................................................213.2.

11、3分區(qū)自動(dòng)搜索算法................................................233.4本章小結(jié)........................................................25第四章第四章系統(tǒng)的硬件設(shè)計(jì)系統(tǒng)的硬件設(shè)計(jì)............................................................................

12、..................26264.1系統(tǒng)的整體結(jié)構(gòu)..................................................264.2無線收發(fā)模塊....................................................274.2.1芯片的選用......................................................274.2.2CC

13、1100應(yīng)用電路.................................................304.2.3脈沖采集的可靠性設(shè)計(jì)............................................324.2.4高速PCB電路的可靠性設(shè)計(jì)........................................334.3掌機(jī)...................................

14、.........................354.3.1控制芯片的選型..................................................354.3.2系統(tǒng)結(jié)構(gòu)介紹....................................................354.4系統(tǒng)的主要參數(shù)..................................................414.

15、5本章小結(jié)........................................................41第五章第五章系統(tǒng)的軟件設(shè)計(jì)系統(tǒng)的軟件設(shè)計(jì)..............................................................................................42425.1程序的模塊化設(shè)計(jì)............................