ATS单片机数字式心率计设计（可编辑）.docVIP

AT89S52单片机数字式心率计设计 Abstract Today in the rapid development of society, peoples material and cultural life has been greatly improved, but also a variety of diseases threatening peoples lives; and heart attack is it difficult to prevent sudden fatal disease, so health is also valued by more and more people. The design problem to be solved is that you can measure heart rate, cardiac disease, heart disease and other digital heart rate meter. This design uses to AT89S52 microcontroller core, low-cost, high accuracy, digital display of heart rate meter miniaturization of hardware and software design. The probe by the single chip integrated analysis of signal processing functions to achieve heart rate measurement. On this basis, the overall design of the system program, and finally achieved through various hardware and software modules. With the relevant parts of the hardware circuit, the program flow chart. The principle of the heart rate meter is used to receive infrared photoelectric sensor OPT101 to human signals, the signal is very weak because of the human body, so the circuit is set in the dual amplifier main chip: OP07, LM324N. The signal passed through enlarged plastic treated A / D converter for analog signals into digital signals, with the above treatment, and then passed to microcontroller AT89S52 calculated, finished up by four digital displayds heart rate, The heart rate meter can easily measure the persons heart rate and body temperature, essentially achieving its stated goals, which will greatly reduce the patients of heart rate and body temperature of the time. Keywords: heart rate; measurement; microcontroller AT89S52;converter 目 录 摘要 I Abstract II 1 绪论 1 1.1 课题的来源 1 1.2 课题设计的目的及功能实现的方法 1 1.3 论文结构 2 2 总体方案设计 4 2.1 心率计原理 4 2.2 总体电路框图设计 4 3 元器件选择及其功能介绍 6 3.1 单片机AT89S52 6 3.2 传感器OPT101 7 3.2.1 OPT101的技术性能 7 3.2.2 OPT101的典型应用 8 3.3 集成运算放大器OP07 11 3.4 低功率运算放大器LM324N 11 3.5 A/D转换器ADC0809 12 4 系统硬件结构设计与仿真 14 4.1 单片机最小系统 14 4.2 信号采集电路 15 4.3 信号放大电路与仿真 16 4