【摘要】 本文介绍了集程控和共电式扩音功能于一身的ＨＣＢＫ系列程控防爆扩音对讲电话机的工作原理。采用单片机８０３１作为控制器，双音频发送接收芯片ＭＴ８８８０进行通信。可以实现话机的按键选号、单呼、群呼、全呼功能，且可自由设定号码和等级，不同等级可以实现不同的呼叫方式。该产品是石油、化工等易燃、易爆、噪音大等场所生产调度的理想通讯设备。更多还原

【Abstract】 In this paper, the principle of HCBK flame -proof telephone with program control and common-battery telephone public-address is introduced .In this phone, 8031 is used, controller and MT8880 is employed to communicate. Selecting code by key, single calling, group calling and full calling can be realized, and the code and the grade can be set freely. Different calling modes can be implemented between different grades.This product is perfect commnucation device for production management in inflammable and explosive oil and chemical industry, and the place with big noises.更多还原