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基于PLC的原煤输配控制系统设计与应用 被引量:4
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作者 吴丽 杨筝 《煤矿机械》 北大核心 2008年第12期203-205,共3页
阐述了选煤厂原煤输配系统采用PLC控制的主要特点,对输煤部分和配煤部分的电气控制系统进行硬件组态、软件设计,用压力继电器检测煤位高低以控制煤流大小,实现高精度配煤,系统中加入完善的连锁保护、报警和显示功能,突出了PLC在工业控... 阐述了选煤厂原煤输配系统采用PLC控制的主要特点,对输煤部分和配煤部分的电气控制系统进行硬件组态、软件设计,用压力继电器检测煤位高低以控制煤流大小,实现高精度配煤,系统中加入完善的连锁保护、报警和显示功能,突出了PLC在工业控制系统中的应用。 展开更多
关键词 原煤输配 PLC 控制程序 高低位检测 报警与显示
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A Highly Sensitive In-Situ Turbidity Sensor With Low Power Consumption 被引量:1
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作者 Yi Hu Lei Sun +3 位作者 Shuming Ye Hang Chen Kai Jiang Jianming Pan 《Photonic Sensors》 SCIE EI CAS 2014年第1期77-85,共9页
A highly sensitive in-situ turbidity sensor with the low power consumption was proposed and evaluated in this study. To meet the practical requirements of the in-situ detection, we have designed the light scattering p... A highly sensitive in-situ turbidity sensor with the low power consumption was proposed and evaluated in this study. To meet the practical requirements of the in-situ detection, we have designed the light scattering path, watertight mechanical structure, and ultra-weak scattering light detecting method. Experiments showed that the sensor had a sensitivity of 0.0076 FTU with the concentration range of 0 - 25 FTU and the R-square of 0.9999. The sensor could withstand the water pressure in depth of 1000m and had the low power consumption in the active mode 10.4mA, sleep mode 65 pA with a supply voltage of 8.4V. Southern China Sea buoy experiments indicated that the sensor could work well in the actual in-situ environment. In comparison with sensors of other companies, our sensor had relatively more comprehensive performance. 展开更多
关键词 In-situ turbidity sensor high sensitivity low power consumption water tight mechanical structure
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