The Study of the Optical Fiber Transmission Systems Applied to the Vehicle's Sensors

• Main Authors: CIOU, KAI-DI, 邱凱迪
• Other Authors: HSU SHIH
• Format: Others
• Language: zh-TW
• Published: 2016
• Online Access: http://ndltd.ncl.edu.tw/handle/u6ht4u

碩士 === 正修科技大學 === 電子工程研究所 === 104 === This study is directed against the vehicle at the time of exploration disasters or disaster scene, sensors used and the manner of vehicle control and data transfer were studied, and to use the LabVIEW software to make data processing and presentation.Sensor module used in this study are: posture sensor module, temperature and humidity sensor module, gas detection module and a global positioning system module (GPS). Utilizing optical fiber communication transmission, the electrical signal into an optical signal transmitted, compared with the traditional electrical signal cable transmission, the optical fiber signal attenuation and subject to interference situation are the improved a lot, especially to ues in long-distance and a large number of transmission occasions . When the sensor is activated, gas-sensing and temperature and humidity sensing outputs a set of 4 ~ 20mA current signal, through four or eight controllers, to transform a set of RS-232 signals output, posture sensing and global positioning system is a direct output of each set of RS-232 signals, three sets of signals simultaneously to enter four-port serial networking servers, through the four-port serial networking servers packets as TCP / IP (Transmission Control Protocol / Internet Protocol, TCP / IP) format, to enter the photoelectric conversion transmission device, the signal from the electrical signal to transform an optical signal, through the optical fiber to transmitted the other end of the photoelectric conversion transmitter, the optical signal back to electrical signals again, to enter the computer. Using LabVIEW software control sensor module on the computer and the sensor module are return data for analysis, display current sensor measured values on the front panel window, the return of the measured value exceeds the standard if the set value, the vehicle on the warning light and buzzer will issue a warning.