关键词: 血细胞检测, 分段曲线拟合, 最小二乘法, 血液分析仪, 线性偏差, 数据采集

Abstract: According to the linear deviation problem of blood cells parameters detection for the hematology analyzer,a piecewise curve fitting method of blood cells is put forward in the paper. Based on the one-to-one relationship between the original value for all kinds of blood cells which are detected by the hematology analyzer and the theoretical value,for piecewise linear fitting according to the data of different period. In order to avoid the jump phenomena of different curve intersection,using three data points of the two linear curve segment intersection to fitting polynomial by Least Square Method(LSM),to realize the smooth transition between different linear segment. Experimental results show that the algorithm is simple,practical and the fitting curve linear deviation is better than the requirements of hematology analyzer industry standard. In addition,it can fully meet the needs of the clinical application.

Key words: blood corpuscle examination, piecewise curve fitting, Least Square Method(LSM), hematology analyzer, linear deviation;data acquisition