摘要
传统的有线通信网络至少包括3根线,供电线、信号线和接地线,系统复杂,成本较高。为了充分利用供电线的资源,本设计通过信号耦合电路将编码信息送入总线,通过信号提取电路从总线提取、滤波和放大信号,最后送入解码芯片等进行处理,成功将信号线整合到电源线上,从而使单总线同时实现系统供电与信息传输的功能,相比传统传输方式,有效的降低了成本,增强了系统的稳定性。设计还加入防拆、抗干扰和循环状态检测等功能,使系统工作更加稳定可靠。本文详细介绍了系统各部分的功能、工作原理、硬件设计和程序流程图。
Traditional wired communications networks include three lines at least, power lines, signal and ground lines,the system are always complicated and high cost. In order to take full advantage of the power supply line resources, through the signal coupling circuit,information will be encoded into the bus, and through the extraction signal circuit, extracting, filtering and amplifying the signal from the bus, and finally into the decoder chip,such as processing, the design will integrated the signal line into power line successfully, the 1-wired is used as power line and at the same time as signal transmission line, compared to the traditional transmission, the system reduce costs and enhance the stability effectively. Design has also joined anti-demolition, the anti-jamming and detection features such as circulation, making the system work more stable and reliable. This paper describes the different parts of the system functions and principle, hardware and circuit design process flow chart.
出处
《电子测试》
2008年第9期78-82,86,共6页
Electronic Test
关键词
单总线
编解码芯片对
光电传感器
1-wire
encoding decoder chips
photoelectric sensor
