Quasi-distributed optical fiber multipoint hot line flow measuring device and method

• Main Authors: WANG DINGBANG, WANG SHAOLIANG, NIU YONGJUN, XUE GUODONG, LEI MING, YU FUSHENG, GUO HAORAN, DONG BOYI
• Format: Patent
• Language: Chinese; English
• Published: 20.10.2023
• Subjects: MEASURING; MEASURING QUANTITY OF HEAT; MEASURING TEMPERATURE; MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUIDLEVEL; METERING BY VOLUME; PHYSICS; TESTING; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR

The invention discloses a quasi-distributed optical fiber multipoint hot line flow measuring device and method. The device comprises a temperature host, an industrial control host and a temperature measuring optical fiber. One end of the temperature measuring optical fiber is placed in a measured space, the temperature host is connected with the other end of the temperature measuring optical fiber, the output end of the temperature host is connected with the input end of the industrial control host, a plurality of constant-power heaters are arranged on the temperature measuring optical fiber, and temperature measuring point pairs are arranged at different positions on the temperature measuring optical fiber. Wherein one temperature measuring point pair corresponds to one constant-power heater, the constant-power heater is located at one temperature measuring point in the corresponding temperature measuring point pair, and one temperature measuring point pair and the corresponding constant-power heater form a