基于LSSVM的热电偶建模及火灾温度测量  

Thermocouple Modeling and Fire Temperature Measurement Based on LSSVM

作　　者：许光[1] 张健中[1] 张卫华[1] 佟晓慧[1] 

机构地区：[1]中国石化安全工程研究院,山东青岛266071

出　　处：《石油库与加油站》2015年第6期18-21,共4页Oil Depot And Gas Station

摘　　要：针对K型热电偶在温度测量中得到的是电压信号而非温度值的问题,采用最小二乘支持向量机的建模方法对热电偶的分度表进行拟合,得到测量温度与电压之间的数学模型。通过调整模型参数,测试数据的绝对误差均值低于0.1℃,表明模型有良好的预测精度。将得到的模型用于加油站地面池火火灾实验,测量火焰中心和距离火焰池边1m处的温度,得到良好的结果,表明了该方法的有效性。In the light of the problem that the result obtained in the temperature measurement by K type therm ocouple is not temperature value but voltage signal, the modeling method of least squares support vector machines is used to fit the scaling table of the therm ocouple, obtaining the mathematic model be-tween temperature and voltage. By adjusting the model parameters, the absolute error of the test data is lower than 0. 1 ℃, which indicates the good pre-diction accuracy of the model. In the ground pool fire experiments of gas station, the obtained model was used to measure the temperatures of the flame center and the point 1 meter from the edge of fire pool, which achieved good results, showing the ef-fectiveness of the method.

关 键 词：K型热电偶 最小二乘支持向量机 建模 池火 温度测量 

分 类 号：TE88[石油与天然气工程—油气储运工程]