基于单神经元自适应PID的医疗患者转运车温控系统研究

Study on the temperature-controlling system of medical patient-transport vehicle based on single neuron adaptive PID

【目的】目前医疗患者转运车虽结构各异、使用便捷,但不具备温度调节功能。针对该问题,研究了用于医疗患者转运车的温控系统,利用温度传感器感知温度并进行调节,使得与患者接触的床体温度适宜,提高患者的舒适度。【方法】考虑到转运车系统具有非线性、不确定性、控制精度要求高等特点,在控制器算法设计中,将神经网络与传统PID控制器相结合,采用了基于单神经元PID的控制系统,从理论上设计了控制系统并进行了仿真实验。【结果】仿真实验结果验证了所采用的方法的有效性;为了进一步验证所设计系统的实用性,基于嵌入式单片机系统行了软件和硬件设计,实现了升温、降温及恒温等温度控制功能。【结论】该系统能够实现对医疗患者转运车温度的稳定控制,达到了设计要求,具有良好的实用性。

【Objective】At present, medical patient-transport vehicles with various structures are convenient, but do not have the function of temperature regulation. Aiming at this problem, the temperature-controlling system for medical patient-transport vehicle was designed. Temperature sensor was used to sense and adjust the temperature, which made the bed temperature suitable for the patients to improve the patients＇ coziness.【Methods】Considering the characters of transport vehicle system such as nonlinearity, uncertainty and high precision of temperature control, neural network and traditional PID controller were combined in the design of controller algorithm.Control system based on single neuron PID was designed theoretically and simulation experiments were performed.【Results】The results of simulation experiments verified the effectiveness of this method. In order to further validate the practicability of the designed system, the software and hardware were designed based on the embedded MCU system for the temperature-controlling functions of heating, cooling and constant temperature.【Conclusion】This system can stably control the temperature of medical patient-transport vehicle, and be of good practicability.