准双工声控自动对讲机

Quasi-duplex Automatic Sound Control Interphone

为了提高高校学生宿舍管理水平,设计和制作了准双工声控自动对讲机。该对讲机是以甲方为主的有线自动对讲机,它是采用数字声控的方法来切换对讲双方的讲话通道,从而实现自动对讲。它的声控部分采用单稳态延时及电子开关来实现,具有声控灵敏度调节,可以避免环境噪音干扰。它的讲话通道由前置放大器和功率放大器组成。即能满足声音信号的放大,又能使传声器和扬声器与功放得到合理的阻抗匹配,从而使对讲声音清晰宏亮。该机传呼距离远,音质清晰宏亮,成本低廉,具有较高的实用价值。

To improve the college dormitory management,design and production of a automatic quasi-duplex sound control interphone. The interphone is automatically A Party based cable radio,which is the way to a digital sound-control interphone switch sides of the speech channel,allowing automatic interphone. It is the voice part of the single steady-state delay and electronic switches to be achieved,with the sound sensitivity adjustment,to avoid noise interference. It＇s the speech channel from the pre-amplifier and power amplifiers. That can meet the sound signal amplification,it also enabled the microphone and speakers and a reasonable impedance matching amplifier,so that a clear loud sound interphone, far paging range,quality of the sound loud and clear,low-cost,high practical value are realized.