调频广播机房报警系统  

FM Broadcasting Room Alarm System

作　　者：王书刚 WANG Shugang(Shandong Broadcasting and Television Station,Jinan 250062,China)

机构地区：[1]山东广播电视台,山东济南250062

出　　处：《电声技术》2022年第3期75-77,共3页Audio Engineering

摘　　要：分别介绍有线报警器和无线报警器相关内容。对于有线报警器,主要介绍调频射频信号的拾取、左右路音频信号的解调、模拟信号到数字信号的转变,以及故障报警电路、故障显示电路在信号中断时的报警情况;对于无线报警器,介绍6路调谐器和故障报警器及信号在中断或较弱时的报警情况。This paper introduces the related contents of wired alarm and wireless alarm respectively. For wired alarm, it mainly introduces the pickup of FM RF signal, the demodulation of left and right audio signals, the transformation from analog signal to digital signal, and the alarm of fault alarm circuit and fault display circuit when the signal is interrupted. For the wireless alarm, introduce the 6-channel tuner, fault alarm and the alarm situation when the signal is interrupted or weak.

关 键 词：信号拾取 故障报警电路 故障显示电路 FM调谐器 

分 类 号：TN931.3[电子电信—信号与信息处理]