基于stm32 的细胞换液自动控制系统① - 计算机系统应用.pdf

2015 年 第 24 卷 第 6 期 计 算 机 系 统 应 用 ① 基于 STM32 的细胞换液自动控制系统 1,2 1 2 2 王 程 , 肖文香 , 凌世全 , 吴天准 1(桂林电子科技大学 生命与环境科学学院, 桂林 541004) 2( 中国科学院深圳先进技术研究院 生物医学与健康工程研究所, 深圳 518055) 摘 要: 为了解决目前在细胞冷冻前细胞换液过程中人工操控难、技术要求高、效率低、成本高等问题, 提出了 一种基于 STM32 和 μC/OS- Ⅱ的自动控制系统的设计方案. 其中, 以STM32 为主控器, 完成步进电机 S 形加减速 脉冲的生成、位移数据的采集和模数转换、与上位机 LabVIEW 的通信等; 控制系统中嵌入 μC/OS- Ⅱ实时操作系 统以实现多任务运行, 简化程序设计, 便于扩展. 实际的测试证明, 该系统具有良好的稳定性和可行性,大大缩短 了实验时间, 性能指标达到了系统初步的目标要求. 关键词: 细胞冷冻; 自动控制; 步进电机; STM32; μC/OS- Ⅱ Exchange of the Cell Medium Automatic Control System Based on STM32 1,2 1 2 2 WANG Cheng , XIAO Wen-Xiang , LING Shi-Quan , WU Tian-Zhun 1(School of Life and Environmental Science, Guilin University of Electronic Technology, Guilin 541004, China) 2(Insitute of Biomedical and Health Engineering, Shenzhen Institutes of Advanced Technology, Chinese Academy of Sciences, Shenzhen 518055, China) Abstract: In order to solve the problems of difficult manual handling, high technical requirement, low efficiency and high cost during the exchange of the cell medium before cell freezing, a design of automatic control system based on STM32 and μC/OS- Ⅱ is proposed. In the system, STM32 is used as main controller to complete the generation of S-shaped acceleration and deceleration pulses for the stepper motor, acquisition of displacement data and analog-to-digital conversion, communication with the host computer, etc. Embedded real-time operation system μC/OS- Ⅱ is applied in the control system, which can realize the multi-tasks running, simplify programming and is easy to extend. Test results show that the system is stable, feasible, and has grea