| 基于PC机与单片机串行通信的电磁流量计励磁系统的设计 |
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| 引用本文： | 谢光辉,何培祥,李庆东.基于PC机与单片机串行通信的电磁流量计励磁系统的设计[J].仪器仪表用户,2005,12(3):40-41. |
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| 作者姓名： | 谢光辉 何培祥 李庆东 |
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| 作者单位： | 西南农业大学,工程技术学院,重庆,400716 |
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| 摘 要： | 论述了在电磁流量计测量系统研究中采用PC机和PIC16F877A单片机串行通信来确定励磁频率的原理和方法。并给出了程序运行的结果；简略论述了电磁流量计的组成及其双频励磁原理：并详细叙述了利用单片机产生的两路PWM波形控制由IR2110组成的励磁电路原理及控制电路与主电路的隔离装置。
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| 关 键 词： | 串行通信 单片机 PWM 光电隔离 PC机 电磁流量计励磁系统 波形控制 |
| 文章编号： | 1671-1041(2005)03-0040-02 |
| 修稿时间： | 2004年11月12 |
Serial communication in design of electromagnetic flowmeter system's excitation based on PC and MCU |
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| XIE Guang-Hui,HE Pei-Xiang,LI Qing-dong.Serial communication in design of electromagnetic flowmeter system''''s excitation based on PC and MCU[J].Electronic Instrumentation Customer,2005,12(3):40-41. |
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| Authors: | XIE Guang-Hui HE Pei-Xiang LI Qing-dong |
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| Abstract: | This article specifically introduces the programming skills of confirming excitation frequency in electromagnetic flowmeter's study on serial communication between PC and PIC16F877A MCU,and also supplies the results of the programme.lt briefly introduces the operation principle of electromagnetic flowmeter, and the dual frequency excitation.lt specifically introduces the principle.that a pair of PWM, presented by microcontroller PIC16F877A, control the circuit of excitation made of IR2110 chip, and equipment of photoelectricity -isulation between controlling circuit and chief circuit. |
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| Keywords: | serial communication microcontroller PWM photoelectricity-is ulation |
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