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| 摘要: |
| 主要讨论借助电话线路进行监控数据的远程实时传输.使用这种传输方式构建的数据传输监控系统可以作为大型远动系统的辅助系统进行实施.数据传输监控系统由被监控设备、被控端、主控端和计算机组成.被监控设备需要传输的监控数据由被控端单片机Atmega8接收,储存在E2PROM中延时发送或直接通过MT8888调制为双音多频(DTMF)信号进行发送;主控端MT8888实现数据的接收和解码,主控端的单片机Atmega8接收解码信号后,上传到计算机进行处理,其处理结果反传至被监控设备完成闭环控制.论述了系统的被控端和主控端的设计,给出了软件流程图.系统可以根据实际情况修正参数,可利用被监控端的Atmega8将控制逻辑前移,在被控端完成闭环控制. |
| 关键词: 监控数据 双音多频信号 数据传输 远动系统 单片机 |
| DOI： |
| 分类号:TM76 |
| 基金项目: |
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| Using DTMF signal to transmit monitoring data |
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YE Shuichun1 LIU Jun2 LIU Man1
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| Abstract: |
| The long-distance real-time transmission of monitoring data via telephone line is discussed,which can be used as an auxiliary system of large remote automation system.The data transmission monitoring system consists of the monitored device,slave terminal,master terminal and computer.The monitored data are received by the singlechip Atmega8 of slave terminal,saved in E2PROM for delayed transmission or directly transmitted by MT888 after modulated into DTMF(Dual Tone Multiple Frequency) signal.It is main func... |
| Key words: monitoring data dual tone multiple frequency data transmission remote automation system single chip microcomputer |
