基于动态条件下压力传感器的嵌入式血压测量系统设计

Design of an embedded blood pressure measurement system of pressure sensor under dynamic condition

传统血压测量系统测量血压值误差较大,无论是性能还是稳定性都相对较差,不能满足临床使用条件,为了解决该问题,提出基于动态条件下压力传感器的嵌入式血压测量系统设计。通过分析嵌入式血压测量系统整体框架,设计系统硬件结构与软件功能;在系统硬件核心部分移植嵌入式微处理器,并对气泵气阀控制、FLASH接口以及液晶显示电路进行设计;制定串口通信协议,利用程序语言完成数据收发处理,由此对血压进行准确测量。通过实验验证该系统设计十分合理,且具有血压值误差小、性能稳定的优势,能够满足人们对血压测量高标准要求。

The traditional pressure measurement system has large error and poor stability for blood pressure measurement,and can′t meet the clinical application conditions.Therefore,a design of embedded blood pressure measurement system of pressure sensor under dynamic condition is put forward.By analyzing the overall framework of the embedded blood pressure measurement system,the hardware structure and software function of the system are designed.The embedded microprocessor is transplanted into the core part of the system hardware,and the air valve control of air pump,FLASH interface and liquid crystal display circuit are designed.The serial communication protocol is formulated,and the programming language is used to send and receive the data,so as to measure the blood pressure accurately.The experimental results prove that the design of the system is reasonable,has the advantages of small error of blood pressure value and stable performance,and can meet the accurate requirement for blood pressure measurement.