赤坎水文站受下游水利工程的影响,河道的天然属性发生改变,水位与流量关系变得非常复杂,近几年主要采用切割水位法还原该河道天然状态进行推流,随意性较大且不能实时反应河道的情况。2012年赤坎水文站引进HADCP(实时流量监测系统),通过S...赤坎水文站受下游水利工程的影响,河道的天然属性发生改变,水位与流量关系变得非常复杂,近几年主要采用切割水位法还原该河道天然状态进行推流,随意性较大且不能实时反应河道的情况。2012年赤坎水文站引进HADCP(实时流量监测系统),通过Son Tek River Surveyor M9同步测流进行比测率定,结果表明能满足测验精度的要求,为解决受水利工程影响,测流工作量大和流量资料时效性差等问题提供有效的解决办法。展开更多
This paper proposes an unprecedented systematic approach for real-time monitoring the temperature and flow of diesel engine by using embedded fiber Bragg grating(FBG). By virtue of FBG's temperature effect, we des...This paper proposes an unprecedented systematic approach for real-time monitoring the temperature and flow of diesel engine by using embedded fiber Bragg grating(FBG). By virtue of FBG's temperature effect, we design a novel sensitive FBG temperature sensing probe to measure the temperature of cylinder head and inlet flow of diesel engine. We also establish the corresponding software platform for intuitive data analysis. The experimental and complementary simulation results simultaneously demonstrate that the FBG-based optical fiber technique possesses extraordinary reproducibility and sensitivity, which makes it feasible to monitor the temperature and inlet flow of diesel engine. Our work can provide an effective way to evaluate the thermal load of cylinder head in diesel engine.展开更多
文摘赤坎水文站受下游水利工程的影响,河道的天然属性发生改变,水位与流量关系变得非常复杂,近几年主要采用切割水位法还原该河道天然状态进行推流,随意性较大且不能实时反应河道的情况。2012年赤坎水文站引进HADCP(实时流量监测系统),通过Son Tek River Surveyor M9同步测流进行比测率定,结果表明能满足测验精度的要求,为解决受水利工程影响,测流工作量大和流量资料时效性差等问题提供有效的解决办法。
基金supported by the National Natural Science Foundation of China(Nos.61271073 and 61473175)the Fundamental Research Funds of Shandong University(No.2015JC040)
文摘This paper proposes an unprecedented systematic approach for real-time monitoring the temperature and flow of diesel engine by using embedded fiber Bragg grating(FBG). By virtue of FBG's temperature effect, we design a novel sensitive FBG temperature sensing probe to measure the temperature of cylinder head and inlet flow of diesel engine. We also establish the corresponding software platform for intuitive data analysis. The experimental and complementary simulation results simultaneously demonstrate that the FBG-based optical fiber technique possesses extraordinary reproducibility and sensitivity, which makes it feasible to monitor the temperature and inlet flow of diesel engine. Our work can provide an effective way to evaluate the thermal load of cylinder head in diesel engine.
