基于单片机及红外传感的电子脉搏计设计
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摘要
文章设计的脉搏计系统以单片机AT89C51和红外光电传感器为核心,充分使用单片机的内部软件资源,减少部分硬件电路设计。红外光电传感器检测脉搏信号,并转换成电脉冲信号,经电路的放大、滤波、整形处理,滤除杂散信号,获得规则的脉冲波形,最后通过单片机控制实现基准定时、脉搏计数、倍频及译码,在数码管中实时显示脉搏数。文章详细介绍了系统总体方案及部分软硬件设计方案。
In this paper,the pulse system adopts the microcontroller AT89C51 and the infrared photoelectric sensor as the core,and makes full use of the MCU's internal software resources,and reduces part of hardware circuit design.Infrared photoelectric sensor is used to detect the pulse signals and transform into electrical pulse signals,then it shuld pass through the filter shaping amplifier circuit,to filter out spurious signals,and get regular pulse waveform,finally through the MCU control to achieve a reference timing,pulse counting and frequency,decoding,the pulse number could display in the digital tube in real time.the paper introduces total scheme and hardware and software design of the system in detail.
In this paper,the pulse system adopts the microcontroller AT89C51 and the infrared photoelectric sensor as the core,and makes full use of the MCU's internal software resources,and reduces part of hardware circuit design.Infrared photoelectric sensor is used to detect the pulse signals and transform into electrical pulse signals,then it shuld pass through the filter shaping amplifier circuit,to filter out spurious signals,and get regular pulse waveform,finally through the MCU control to achieve a reference timing,pulse counting and frequency,decoding,the pulse number could display in the digital tube in real time.the paper introduces total scheme and hardware and software design of the system in detail.
引文
[1]张毅刚,彭喜元,董继成.单片机原理及应用[M].北京:高等教育出版社,2004.
[2]吴本玠.红外技术与生物医学[J].中国医疗器械信息,2001,(2).
[3]隋传国.脉搏信号的拾取和放大处理[J].中国仪器仪表,2005,(6).
[4]华成英,童诗白.模拟电子技术基础(第四版)[M].北京:高等教育出版社,2006.
[2]吴本玠.红外技术与生物医学[J].中国医疗器械信息,2001,(2).
[3]隋传国.脉搏信号的拾取和放大处理[J].中国仪器仪表,2005,(6).
[4]华成英,童诗白.模拟电子技术基础(第四版)[M].北京:高等教育出版社,2006.