广播电视信号的自动监测系统设计

Automatic monitoring system design of broadcast television signals

摘要:

提出一种广播电视信号的自动监测系统，以改变传统的人工定期外出收测方式。在广播电视覆盖区范围内的多个监测点上设置前端设备，用于接收广播电视信号并将信号频率、场强、监测点名称等信息通过网络传输到处理终端，进行监测点信号场强的自动检测和分析。前端设备以单片机为核心，连接天线和选频电路、检波电路、模数转换器、数模转换器以及网络收发器，通过软件循环选频、处理场强数据。网络收发器实现前端设备以有线或无线方式接入互联网，从而与处理终端连接和数据交互。处理终端以桌上型PC、膝上型PC或者掌上PC为平台，通过软件远程接收互联网传输的的数据，对每个监测点上的前端设备所发送的信号频率、场强、监测点名称等信息进行存储和显示。系统运行正常，数据精确，方便快捷，稳定可靠，省时省力，具有很高的推广价值。

Abstract:

This paper proposes an automatic monitoring system of radio and television signals to change the traditional way of manpower periodic testing.The front-end device of provided on the multiple monitoring points within the coverage area of radio and television，for receiving a broadcast television signal and the signal frequency, field strength，monitoring point name and other information，through the network to the processing terminal，automatic detection and analysis monitoring point signal field strength.The front-end equipment uses the microcontroller as the core, connecting antenna and frequency selective circuit, detection circuit, analog to digital converter, digital to analog converter and network transceiver, through the software cycle selects frequency, processing field strength data. The network transceiver enables the front-end devices to access the internet in a wired or wireless manner to handle terminal connections and data interactions.The processing terminal uses the desktop PC, laptop PC or handheld PC as the platform to remotely receive the data transmitted over the internet through software, and stores and displays the signal frequency, field strength, and monitoring point name of the front-end equipment on each monitoring point.System operating normally, data is accurate, convenient, reliable, time-saving, promotion of high value.