| 微型机控制的心肺听诊模拟仪 |
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| 引用本文： | 孟祥顺.微型机控制的心肺听诊模拟仪[J].信息技术,2011(3):162-164,167. |
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| 作者姓名： | 孟祥顺 |
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| 作者单位： | 营口职业技术学院电子系,营口,115000 |
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| 摘 要： | 介绍了由微型机控制的基于AT89S51单片机制作的心肺听诊模拟仪。微型机经RS-232串口发送指令码,声卡送出语音信号,单片机依据PC机的指令码,控制由CD4066集成电路构成的14选1模拟开关接通电路中的功率放大器,形成前置放大电路共用,14路功放单独使用的心肺听诊电路。电路中使用了X9511数字电位器,MC14538双单稳态触发器。软件给出了PC机的VB部分通信程序和心肺听诊模拟仪的程序流程图。
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| 关 键 词： | AT89S51单片机 CD4066模拟开关 X9511数字电位器 程序流程图 |
A cardiopulmonary auscultation simulator controlled by microcomputer |
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| MENG Xiang-shun.A cardiopulmonary auscultation simulator controlled by microcomputer[J].Information Technology,2011(3):162-164,167. |
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| Authors: | MENG Xiang-shun |
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| Institution: | MENG Xiang-shun (Electrical Engineering Department,Yingkou Technical College,Yingkou 115000,China) |
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| Abstract: | This paper designed a novel cardiopulmonary auscultation simulator based on the AT89S51 MCU,controlled by PC.The PC sends instructions via RS-232 serial port.The sound card generates audio signals.According to the PC instructions,the MCU controls the one-to-fourteen bilateral switch consisted of the CD4066 chips and forms 14 individual power amplifiers which share the same preamplifier circuit.The X9511 digital potentiometer and MC14538 dual monostable multivibrator are used in the design.It also presents the source code of a VB communication PC terminal and the flow chart of the cardiopulmonary auscultation simulator program. |
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| Keywords: | AT89S51 microcontroller CD4066 bilateral switch X9511 digital potentiometer program flow chart |
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