基于力矩检测的一次性耗材抓取技术优化  

Optimization of disposable consumables grasping technology based on torque detection

作　　者：徐辅财 钱嵩松[1] 程文播[2] 钱庆[2] 杨任兵 Xu Fucai;Qian Songsong;Cheng Wenbo;Qian Qing;Yang Renbing(School of Electronic and Optical Engineering,Nanjing University of Science and Technology,Nanjing 210000,China;Suzhou Institute of Biomedical Engineering and Teconology,Chinese Academy of Sciences,Suzhou 215163,China)

机构地区：[1]南京理工大学电子工程与光电技术学院,南京210000 [2]中国科学院苏州生物医学工程技术研究所,苏州215163

出　　处：《电子测量技术》2020年第10期168-173,共6页Electronic Measurement Technology

基　　金：国家重点研发计划项目(2019YFC0121800);中国科学院院地合作项目(18YFYSZC00010)资助

摘　　要：在全自动生化分析仪的检测过程中,移液精度是一项非常关键的指标,其精度高低直接影响到生化分析的结果,而在使用一次性耗材(tip头)的情况下,其抓取精度会直接影响移液精度。耗材抓取精度一般从两方面进行提升:定位精度优化和耗材本身结构优化。在基于定位精度优化下采用电机芯片TMC2660PA的力矩检测功能对耗材扎取技术进行优化,通过比重法分别检验室温下使用和不使用该项功能下的移液精度。数据结果显示在使用力矩检测功能的情况下移液精度更高,稳定性也更高,因此该项力矩检测功能对于耗材抓取精度有一定优化作用。During the detection process of the automatic biochemical analyzer,the accuracy of pipetting is a very important index,and its accuracy directly affects the results of biochemical analysis.In the case of using disposable consumables(tips),its grasping accuracy will directly affect pipetting accuracy.The grasping accuracy of consumables is generally improved from two aspects:optimization of positioning accuracy and optimization of the structure of the consumables themselves.In this paper,based on the optimization of positioning accuracy,the torque detection function of the motor chip TMC2660PA is used to optimize the consumables extraction technology.,and the specific gravity method is used to check the pipetting accuracy at room temperature with and without this function.The data results show that when using the torque detection function,the pipetting accuracy is higher and the stability is higher.Therefore,the torque detection function is optimized for the consumables grasping accuracy.

关 键 词：移液精度 耗材抓取精度 力矩检测 

分 类 号：TP2[自动化与计算机技术—检测技术与自动化装置]