生化分析仪的误差分析与建模

The Error Analysis and Modeling of Automatic Chemistry Analyzer

为了明确影响生化分析仪精度的四大误差源即定位误差、光学系统噪声、加样误差、温度波动与仪器精度之间的关系,以生化分析仪对TP(总蛋白)项目的测试为例,对这四大误差源与测试误差之间的关系一一进行了分析,发现定位误差对吸光度的影响极小,最后建立了仪器总误差的合成模型和仪器光学系统允许噪声的模型。

In order to find out the relationships among the four error sources,namely,locating error,noises of optics system,sampling error and temperature fluctuations,and the accuracy of the instrument,the TP test is taken as a clue,each relationship of them is analyzed and it is found that the affection of the locating error is too small and can be ignored.The total error model and the model of the allowed noise of the optics system of the instrument are established in this paper.