Title :
The Research and Application of FM Circuit based on CD4046 in the Traffic Information Release System
Author :
Zhihong, Xiao ; Zongqi, Guan ; Danjiang, Chen
Author_Institution :
Dept. of Electron. & Inf. Eng., Zhejiang Wanli Univ., Hangzhou
fDate :
Aug. 29 2008-Sept. 2 2008
Abstract :
The content of the intelligent transportation system include many aspects of which the key part is to realize the advanced traffic information release system. This system completes the information release mainly through the use of the wireless communication technology. The paper briefly introduces the structural design of the traffic information collection and release system, and puts forward an economic and reliable wireless data transmission program which uses the traffic information data of the subcarrier channel transmission to carry out the remodulation for the base-band analog signal (subcarrier modulation). The subcarrier modulation and demodulation use integrated PLL chip, CD4046. The paper expatiates on the method to realize remodulation and demodulation, and its application in the system.
Keywords :
modems; phase locked loops; radiocommunication; traffic information systems; CD4046; FM circuit; baseband analog signal; integrated PLL chip; intelligent transportation system; structural design; subcarrier channel transmission; subcarrier demodulation; subcarrier modulation; traffic information collection; traffic information release system; wireless communication; wireless data transmission; Circuits; Communications technology; Data communication; Demodulation; Frequency conversion; Frequency modulation; Intelligent transportation systems; Phase locked loops; Voltage; Wireless communication; CD4046; FM; PLL; demodulation; sub-carrier channel;
Conference_Titel :
Computer Science and Information Technology, 2008. ICCSIT '08. International Conference on
Conference_Location :
Singapore
Print_ISBN :
978-0-7695-3308-7
DOI :
10.1109/ICCSIT.2008.66
