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工程设计学报
工程设计学报  2016, Vol. 23 Issue (6): 612-619    DOI: 10.3785/j.issn.1006-754X.2016.06.014
整机和系统设计     
全自动生化进样系统的设计
刘镇武1, 尚志武1, 黄炎彬2
1. 天津工业大学 天津市现代机电装备技术重点实验室, 天津 300387;
2. 天津市一瑞生物工程有限公司, 天津 300000
Design of full automatic biochemical sampling system
LIU Zhen-wu1, SHANG Zhi-wu1, HUANG Yan-bin2
1. Tianjin Modern Electromechanical Equipment Technology Key Laboratory, Tianjin Polytechnic University, Tianjin 300387, China;
2. Tianjin Era Biology Engineering Co., Ltd., Tianjin 300000, China
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摘要：

医疗检测过程中，传统的人工检测方法效率低、主观误差大、成本高.针对人工检测的缺陷以及生化分析系统高精度、小型化的需求，自主研发了一种全自动生化进样系统.该系统在机械结构上兼具移液和取退吸头的功能，在控制方法上优化了执行机构的控制算法.首先，为满足自动进样系统的实际需求，设计了整个系统的结构和以STM32控制芯片为核心的控制系统；其次，通过论证步进电机的控制算法，决定采用S型曲线控制算法，并对其进行优化和实现，从而提高了系统的控制精度和速度；最后，为进一步提高系统的鲁棒性，对试验数据进行整理和分析，得到了系统的误差补偿曲线和校正方法.结果表明改进后的系统拥有更高的进样精度，满足了更广泛的实际需求，对医疗器械的研发具有指导意义.
关键词： 生化分析仪;  进样系统;  STM32;  S型曲线;  误差补偿    
Abstract:

In the process of medical examination, the traditional manual detection method has the characteristics of low efficiency, high subjective error and high cost. According to the defects of artificial detection and the requirements of biochemical analysis system with high precision and miniaturization, a full automatic biochemical sampling system was developed. In the mechanical structure, the system had the functions of moving the liquid and taking and withdrawing the suction head. In the control method, the actuator control algorithm was optimized. Firstly, the whole system structure was designed and the control system based on the STM32 control chip was completed to meet the actual needs of the automatic sampling system. Secondly, by demonstrating the stepper motor control algorithm, the S type curve control algorithm was used, and the algorithm was optimized and implemented, thus, the control accuracy and speed was improved. Finally, in order to further improve the robustness of the system, we collated and analyzed the experimental data, and got the system error compensation curve and the method of correction. The results show that the improved system has higher accuracy of sampling, meets the actual needs more extensively, and has guiding significance for the development of medical devices.
Key words: biochemical analyzer    sampling system    STM32    S type curve    error compensation
收稿日期: 2016-04-14 出版日期: 2016-12-28
CLC:  TP29  
基金资助:

天津市科技支撑计划重点项目（16YFZCSY00860）.
通讯作者: 尚志武(1977-),男,天津人,正高级工程师,从事智能诊断与动态测控、机电一体化技术、先进检测技术等研究,E-mail:shangzhiwu@126.com.http://orcid.org//0000-0002-7310-0921     E-mail: shangzhiwu@126.com
作者简介: 刘镇武(1990-),男,河南洛阳人,硕士生,从事机械机构研究,E-mail:jikouji@126.com.http://orcid.org//0000-0002-0145-0690
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引用本文:

刘镇武, 尚志武, 黄炎彬. 全自动生化进样系统的设计[J]. 工程设计学报, 2016, 23(6): 612-619.

LIU Zhen-wu, SHANG Zhi-wu, HUANG Yan-bin. Design of full automatic biochemical sampling system. Chinese Journal of Engineering Design, 2016, 23(6): 612-619.

链接本文:

https://www.zjujournals.com/gcsjxb/CN/10.3785/j.issn.1006-754X.2016.06.014    或    https://www.zjujournals.com/gcsjxb/CN/Y2016/V23/I6/612

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