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首页> 外文会议>Computers in railways XII: Computer system design and operation in railways and other transit systems >Development of a railway signaling device based on mixed digital and analog signals using digital signal processors
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Development of a railway signaling device based on mixed digital and analog signals using digital signal processors

机译：使用数字信号处理器开发基于混合数字和模拟信号的铁路信号装置

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In Japan, automatic train control (ATC) systems, one type of railway signaling system, transmit train control information by using analog signals based on amplitude modulation (AM) in the audio frequency band. To realize highly functional train control by increasing the data transmission speed, there have been many studies on digital ATC that transmits train control information by using digital signals based on phase shift keying (PSK), and these systems are employed in some railway lines. In practice, however, it is difficult to install digital ATC because it is impossible to ensure another transmission band for digital ATC signals due to the existing track circuit configuration and interoperability conditions, and there are many railway lines in which analog ATC is still employed. To overcome this restriction, we proposed a novel railway signaling system using mixed digital and analog signals. We employed quadrature PSK (QPSK) for digital signals and developed a transmission device using digital signal processors. We evaluated the transmission characteristics by conducting a basic experiment.
机译：在日本，自动火车控制（ATC）系统是一种铁路信号系统，它通过使用基于音频频带中的幅度调制（AM）的模拟信号来传输火车控制信息。为了通过提高数据传输速度来实现高性能的列车控制，已经进行了许多关于数字ATC的研究，这些数字ATC通过使用基于相移键控（PSK）的数字信号来传输列车控制信息，并且这些系统已在一些铁路线上使用。然而，实际上，由于现有的轨道电路配置和互操作性条件，由于无法确保数字ATC信号的另一个传输频带，并且安装数字ATC是困难的，并且许多铁路线路仍采用模拟ATC。为了克服这一限制，我们提出了一种使用混合数字和模拟信号的新型铁路信号系统。我们对数字信号采用了正交PSK（QPSK），并开发了一种使用数字信号处理器的传输设备。我们通过进行基础实验评估了传输特性。

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