基于ARM的PCR仪温度控制系统研究

本文设计一种基因扩增仪的温度控制系统,它以ARM芯片为核心,由液晶屏、键盘、驱动电路等模块组成,并以PWM技术、PID控制算法实现温度的控制,使系统可较好地完成基因扩增仪的热循环过程。经测试结果显示该控制系统能够很好地满足基因扩增仪对升降温速度以及精度的要求,真正地实现了低成本、高精确度、快升降温速度。该系统作为基因扩增的专用设备在生命科学、医学研究等研究领域具有良好的应用前景。

Research on Temperature Control System of PCR Based on ARM

In this design, a temperature control system which uses ARM chip as the core is introduced.The system is used as gene amplification equipment.The control system circuit that based on PWM technology and PID control algorithm to achieve temperature control is made up by the following modules, liquid crystal display, keyboard and drive circuit as so on, the system can be accomplished the thermal cycle of gene amplification satisfactorily. The test results show that the control system can satisfy the gene amplification requirements on accuracy and the speed of heating or cooling, realize low-cost, high precision, fast heating and cooling rate truly. The device of special equipment as gene amplification has good prospects in the life sciences, medical research and others.