發(fā)布時間：2019-03-03 09:51

【摘要】：由于醫(yī)院、飛機等特殊場合對電磁波比較敏感,傳統(tǒng)的無線電通信方式不適合此類場所,本文根據(jù)VLC原理,對大氣信道進行建模分析的基礎(chǔ)上,設(shè)計開發(fā)了一套室內(nèi)點對點VLC通信平臺。系統(tǒng)采用IM/DD調(diào)制方式,通信鏈接為直射式LOS鏈接,通過合理設(shè)計發(fā)射端光源LED的調(diào)制驅(qū)動電路、接收端探測電路、放大器電路,選用0.5W功率的LED燈珠,在室內(nèi)白天強背景光干擾及室內(nèi)燈光干擾狀態(tài)下,實現(xiàn)了室內(nèi)0.3m的無失真穩(wěn)定的信息傳輸,驗證了基于白光LED的可見光通信系統(tǒng)的可實現(xiàn)性;同時采用本系統(tǒng)對室內(nèi)環(huán)境參量進行了實時監(jiān)測傳輸,系統(tǒng)傳輸性能穩(wěn)定、可靠,驗證了基于白光LED可見光通信系統(tǒng)在室內(nèi)的可實用性。
[Abstract]:Because the hospital, aircraft and other special occasions are sensitive to electromagnetic wave, the traditional radio communication mode is not suitable for this kind of place. Based on the VLC principle, the atmospheric channel is modeled and analyzed in this paper. A set of indoor point-to-point VLC communication platform is designed and developed. The system adopts the IM/DD modulation mode, the communication link is the direct LOS link, through the reasonable design of the transmitter light source LED modulation drive circuit, the receiver detection circuit, the amplifier circuit, selects 0.5W power LED lamp bead, Under the condition of strong background light interference and indoor light interference, the information transmission without distortion and stability of 0.3m is realized, and the realization of visible light communication system based on white light LED is verified. At the same time, the real-time monitoring and transmission of indoor environmental parameters is carried out by this system. The transmission performance of the system is stable and reliable, and the practicability of the visible light communication system based on white light LED in the room is verified.
【作者單位】： 西安工業(yè)大學(xué)電子信息工程學(xué)院;
【基金】：國家自然科學(xué)基金項目(61671362&6127136) 陜西省科技廳自然基金項目(2012JQ8008) 陜西省教育廳科技專項(2012JK0545) 西安市科技計劃項目(CXY1341(3))
【分類號】：TN929.1
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本文編號：2433590