摘要
设计并实现了一种基于RTAI嵌入式Linux实时内核的多数据融合的智能检测仪的研制,针对传感器的非线性输出问题,给出了一种数据重构算法,采用最小二乘拟合与径向基函数残差插值进行融合重构,在增加有限计算量的条件下,提高传感器数据的近似精度;采用ARM11作为主处理器,构建以RTAI硬实时嵌入式系统为主核的管理子系统,采用DSP(TMS320F28335)作为协处理器,构建以μC/OS-Ⅱ操作系统为辅核的数据采集处理子系统,实现双CPU嵌入式实时系统架构,进行气体检测、风速检测、温度检测、风量检测、通道截面周长及面积测量等;设计了分析判断功能,对检测到的数据进行综合分析,依靠分析决策库,进行决策判断;在多个工业现场测试实验表明,该检测仪具备智能性高、数据实时处理能力强等特点。
A multi data fusion intelligent detection instrument based on RTAI is designed and implemented. For the nonlinear problem of output of sensor, we develop a data reconstruction method, using least square fitting and radial basis function error interpolation fusion re- construction , in the condition of increasing the limited computing quantity, the data accuracy of the sensor is improved; This paper uses ARMll as the main processor to build the management subsystem, and uses DSP （TMS320F28335） as the coprocessor to build the data ac- quisition and processing subsystem of/~C/OS--II operating system being auxiliary nuclear, then the paper implements the construction of the double kernel embedded operating system , conducts the gas detection, speed detection, temperature detection, flow testing, the roadway section perimeter and area measurement~ We design the state analysis function, analyzing the detected data comprehensively, relying on the library of the evaluation experience to make decision. Field test shows that, the detection with high intelligence, strong data processing abili- ty and other characteristics.
出处
《计算机测量与控制》
北大核心
2014年第6期1987-1989,1992,共4页
Computer Measurement &Control
