论文部分内容阅读
铁路站场地区自动拨号系统 主要完成单位 北方交通大学、杭州通信设备厂、上海铁路局杭州分局 铁路站场地区自动拨号系统是为站场运输作业专用的移动通信设备,该系统消化、综合国外集群系统的特点,并考虑到国内专用网的发展,根据频率合成和扫描原理自行设计研制了中央控制器,根据微带电路及滤波原理设计研制丁射频收信分配器,根据魔T电路及功率合成原理设计研制了发射信号功率合成器,利用中规模集成电路及控制软件研制了多信道自动扫描车台、手台的控制器,以及根据电话交换与接口原理研制了无线交换机和电话互联接
Railway station area automatic dialing system is mainly completed units North Jiaotong University, Hangzhou communications equipment factory, Shanghai Railway Bureau, Hangzhou Branch railway station area automatic dialing system for the station transport operations dedicated mobile communications equipment, the system digestion, the integration of foreign clusters System characteristics and taking into account the development of the domestic private network, according to the principle of frequency synthesis and scanning their own design and development of a central controller, according to the design and development of small RF circuits and RF signal distributor, according to the magic T circuit and power synthesis Principle Design and development of a transmit signal power synthesizer, the use of large-scale integrated circuits and control software developed a multi-channel automatic scanning car, hand controller, and according to the principle of telephone exchange and interface developed a wireless switch and telephone interoperability