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1 慨述 有线电视的迅速发展,使得用户对有线电视节目的质量,节目内容及可靠性提出了更高的要求。随着频道越来越多,有线电视前端设备容量不断增加给前端的信号监视带来很多困难,有时不能及时发现信号中断并及时记录有关故障,影响到节目播出的质量,亦给维护人员带来很大工作量。对此笔者根据目前(CATV)前端规模和“电视墙”监视方式研制了“微机在线有线电视信号自动巡检控制系统”。其目的是能够快速准确地自动检测各播出频道信号(音、视频)故障并及时报警、记录有关故障信息。该系统采用了先进的计算机技术、数字控制技术、电视技术,实用性强,可用于同类各有线电视前端。
With the rapid development of cable television, users have put forward higher requirements on the quality, program content and reliability of cable television programs. With the increasing number of channels, the increasing capacity of cable TV front-end equipment brings many difficulties to front-end signal monitoring. In some cases, it is not possible to detect signal interruptions and timely record the relevant faults, affecting the quality of the programs broadcast. To a lot of workload. In this regard, according to the current (CATV) front-end scale and “TV wall” monitoring mode developed a “microcomputer online cable television signal automatic inspection control system.” Its purpose is to be able to quickly and accurately automatically detect the broadcast channel signal (audio and video) fault and timely alarm, record the fault information. The system uses advanced computer technology, digital control technology, television technology, practicality, can be used for similar cable front-end.