The Development Of Intelligent Fiber Optic Sensing Temperature Measurement System

The paper introduces a design proposal of intelligent fiber optical thermoraetry, and develops a detailed discuss about the system' s theory ,the realization of intelligent sensor ,the design of system' s hardware and software, in the mean time introduces the virtual instrument system and application.The whole sensor system uses digital design scheme, using intelligent sensor system makes the system possess more functions. In the hardware design dynamic gaining is used to improving the signal' s measurement range; using 12 bits' A/D and D/A converter renders certain the system' s precision .A eeprom is used to save some temperature' s adjustment value to adjust the local or global temperature. The software' s design uses modular method, and a small operation system is programmed to accomplish the system' s functions . In the software the noise repression method and anti-interaction method are wielded.The paper also introduces virtual instrument simply, a thermometry system is introduced which uses virtual instrument.In the end of the paper, an improvement idea is advanced, and an eight-wavelength pyrometer, which is designed by harbin institute of technology, is introduced briefly.