發(fā)布時間：2018-03-18 20:05

  本文選題：低功耗　切入點：遠距離　出處：《電子科技大學(xué)》2016年碩士論文　論文類型：學(xué)位論文

【摘要】：在無線通信技術(shù)飛速發(fā)展的大背景下,工業(yè)監(jiān)視與控制、家庭和樓宇自動化、無線警告和安防系統(tǒng)、遠程灌溉系統(tǒng)等領(lǐng)域也急速發(fā)展,進而催生了大量對無線傳輸技術(shù)的需求。在對無線傳輸技術(shù)需求急劇增長的同時,在某些特殊應(yīng)用場景下對無線傳輸高的性能也提出了更高的要求。例如在荒漠、重化工區(qū)等人煙稀少場景對無線傳輸技術(shù)的低功耗、遠距離傳輸重視程度日益增長,本文正是為了應(yīng)對低功耗遠距離傳輸?shù)木薮笮枨蠖O(shè)計開發(fā)一款無線傳輸模塊旨在盡力改善這一局面。對于遠距離無線傳輸,利用電信運營商的蜂窩網(wǎng)絡(luò)進行數(shù)據(jù)的傳輸似乎是唯一不可替代的選擇。然而涉及到數(shù)據(jù)保密和可操控性方面,并非所有的服務(wù)提供商都情愿通過電信運營商的蜂窩網(wǎng)來傳輸數(shù)據(jù)。其次,通過建設(shè)大量基站來進行搭建蜂窩網(wǎng)顯然要花費大量人力、財力成本。另外,大量的物聯(lián)網(wǎng)設(shè)備連接至蜂窩網(wǎng)勢必會造成蜂窩網(wǎng)的擁堵,對同一網(wǎng)絡(luò)的其他設(shè)備造成干擾。本文正是認(rèn)識到了電信蜂窩網(wǎng)的弊端并未通過電信蜂窩網(wǎng)而是通過開發(fā)低運行功耗的無線射頻傳輸模塊來進行遠距離的傳輸。為了開發(fā)低功耗遠距離的無線射頻傳輸模塊,本文采用了面向中國地區(qū)的Sx127x系列芯片Sx1278作為無線模塊的射頻IC。Sx1278采用了升特(Semtech)公司獨特的Lo Ra擴頻通信技術(shù),且集成了+20d Bm功率放大器,使得該射頻IC在維持較低運行功耗的同時在遠距離傳輸方面具有非常卓越的性能。同時結(jié)合低功耗MCU處理器STM32L151CBT6、低插入損耗射頻開關(guān)PE4259、高加速度靈敏度晶振NX2520SA、聲表面波濾波器DCC6C設(shè)計開發(fā)了一款運行在433MHz頻段的無線通信模塊。該模塊可實現(xiàn)了3154.46m的無丟包傳輸和4851.13m的無斷線傳輸,且最低待機功耗為11.62m W,發(fā)射功耗為401.71m W,接收功耗為90.09m W。最終達到了-126.95d Bm的接收靈敏度。
[Abstract]:In the context of the rapid development of wireless communication technology, industrial surveillance and control, home and building automation, wireless warning and security systems, remote irrigation systems, and other fields have also developed rapidly. The demand for wireless transmission technology has increased dramatically, and in some special application scenarios, higher requirements for wireless transmission performance have been put forward, for example, in the desert. Heavy chemical areas and other sparsely populated scenes pay more and more attention to wireless transmission technology due to its low power consumption and long distance transmission. In order to meet the huge demand of low power long-distance transmission, this paper designed a wireless transmission module to try to improve this situation. The use of telecommunications operators' cellular networks for data transmission seems to be the only irreplaceable option. However, when it comes to data confidentiality and controllability, Not all service providers are willing to transmit data through the cellular network of telecom operators. Secondly, building a large number of base stations to build cellular networks will obviously cost a lot of human and financial resources. A large number of Internet of things devices connected to cellular networks are bound to cause congestion in cellular networks. This paper realizes that the disadvantages of telecommunication cellular network are not carried out by telecommunication cellular network but by the development of wireless radio frequency transmission module with low power consumption. In order to develop wireless radio frequency transmission module with low power consumption and long distance, In this paper, the radio frequency IC.Sx1278, which uses the Sx127x series chip Sx1278 as the wireless module for China, adopts the unique Lo Ra spread spectrum communication technology and integrates the 20dBm power amplifier. The RF IC has excellent performance in long distance transmission while maintaining low power consumption. Combined with low power MCU processor STM32L151CBT6, low insertion loss RF switch PE4259, high acceleration sensitivity crystal oscillator NX2520SA, acoustic meter. The surface wave filter (DCC6C) has designed and developed a wireless communication module running at 433MHz frequency band. The module can realize 3154.46m packet free transmission and 4851.13m unbroken transmission. The lowest standby power consumption is 11.62m W, the transmission power consumption is 401.71m W, and the receiving power consumption is 90.09mW. finally, the receiver sensitivity of -126.95dBm is achieved.
【學(xué)位授予單位】：電子科技大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2016
【分類號】：TN929.5

【參考文獻】

相關(guān)期刊論文 前1條

1 張紅文;;低功耗無線收發(fā)電路系統(tǒng)設(shè)計[J];現(xiàn)代電子技術(shù);2014年21期

，

本文編號：1631100