基于AT89S52数字血压计的设计与实现

以AT89S52单片机为主要控制核心,利用血压传感器把用户的血压信号转变为微弱的电信号,微弱的电信号经过放大后输入A/D转换芯片MAX197中,由MAX197把电压信号转换为数字量,再经过单片机处理后在LED上显示,随时可以观看到血压值,同时将数据传送到病人的电子档案之中,让医生从整体上了解病人的血压情况做出诊断。文中设计有效解决了传统血压计需要人工读取和记录数据的缺点。

Design and Implementation of A Digital Sphygmomanometer based on AT89S52

This design uses the AT89S52 as the primary control core,and transforms user’s blood pressure signal into the weak electrical signal by using the blood pressure sensor.Then the weak electrical signal which is enlarged by the signal-amplifier is inputted into A/D transformation chip MAX197,which transforms the voltage signal into the digital quantity.Subsequently these figures are processed by AT89S52 again,the achieved results are demonstrated on LED,and the blood pressure value could be watched as necessary.Meanwhile this data material also can be transmitted into patient’s electronic document.So doctors can understand change situation of the patient’s blood pressure from the whole,and make the correct diagnosis.This design effectively solves the tradition sphygmomanometer’s shortcomings such as incovenient use,requiring to artificially to read and register data results.