摘要
介绍了DTMF技术和CAN总线,在详细分析振铃检测、DTMF信号调制/解调、模拟摘/挂机和CAN总线数据传输等功能与原理的基础上,设计开发了以单片机AT89C51CC01和双音多频解码集成芯片MT8880为电路核心、通过DTMF公话网络和CAN网络信息传递的远程多节点家庭控制系统。系统的应用实验结果表明,其功能实用、灵活,信息传递实时、可靠,能够对多个被遥控对象的状态进行查询及控制,适于家用电器或其他场所的各种设备的远程遥控操作。
DTMF technology and CAN bus were introduced to analyzed function and principle of ring testing, DTMF signal modulating/demodulating, telephone onhook/offhook simulating and CAN bus data transmitting. Then a long - range control system was designed with AT89C51CC01 and MT8880 chips. The system was a multi - node family control system in which information transfers through DTMF public telephone network and CAN network. The accuracy, practicability and flexibility of the system were validated by the practical experiments. All the functions were realized. Real - time and reliable information transfer was achieved and the situation of the remote control objects could be queried and controlled. The system was suitable to long - range remote control for domestic appliance or other devices.
出处
《武汉理工大学学报（信息与管理工程版）》
CAS
2009年第6期889-892,共4页
Journal of Wuhan University of Technology：Information & Management Engineering
