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In this paper, the multiple reference points methods for eliminating dc interference in Raman scattering based distributed temperature sensors (DTSs) are presented and their performance comparison for eliminating dc interference is also made under two different test conditions. The experimental results show that the dual reference points temperature interrogating methods can calculate dc offsets in...
A temperature monitoring system installed in Daqing Petrochemical Company, based on a combination of RS485 serial bus and optical fiber communication has been presented in this article, in which the intelligent temperature sensor DS18B20 was used. The interface circuit between the micro control unit (MCU) and DS18B20 has been designed, which can enhance the sensor-driven ability of the MCU and improve...
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