Distance resolution improvement method for the temperature measuring system using optic fiber

摘要

The present invention relates to an improved system for converting an input signal from an analog signal into a digital signal as a system for receiving light reflected from the optical fiber by injecting light pulses into the optical fiber and measuring temperature according to the intensity of the light.;The measurement distance can be divided into several kilometers to several tens of kilometers depending on the intensity of the incident light, and the resolution of the distance can vary depending on the optical pulse width and the speed of change of the A / D converter, and the variation of the optical pulse width and A / D converter. This is to improve the distance resolution by moving the frequency of the A / D converter in the determined state.