"基于AT89S51单片机的高精度电子血压计设计及应用研究"

intelligent, etc. With the development of modern electronic technology, electronic blood pressure monitors are showing a trend towards household use. However, traditional single-chip microcontroller circuit design is complex, stability is not good, and measurement accuracy is not high. Therefore, this design first designs the circuit system from the blood pressure measurement method, and then uses the AT89S51 single-chip microcontroller as the control core. The peripheral hardware circuit is composed of the gas pressure sensor US9111, serial A/D conversion chip ADC0832, LCD driver chip, and other analog circuits. At the same time, KeiluVision2 is used for C language programming to make the hardware meet the functions of a simple blood pressure monitor. The blood pressure monitor designed in this paper has high stability, fast measurement speed, high measurement accuracy, and the test results are basically consistent with a mercury sphygmomanometer. In addition, the design of this system can meet the needs of human health measurement, which has many benefits for improving the quality of daily life and has a high market value. Keywords: microcontroller, sphygmomanometer, sensor, accuracy.