1) Jointless Track Circuit Frequency-shift Automatic Block System
无绝缘移频自动闭塞
1.
This thesis is based on ZPW-2000A /UM71 Jointless Track Circuit Frequency-shift Automatic Block System, which is widely used in our country s railway sections.
本文基于我国铁路区间广泛使用的ZPW-2000A/UM71无绝缘移频自动闭塞制式,利用计算机仿真技术对区间的部分设备及功能进行了模拟。
2) ZPW-2000A Jointless Track Circuit Frequency-shift Automatic Block System
ZPW-2000A无绝缘移频自动闭塞
1.
It was based on ZPW-2000A Jointless Track Circuit Frequency-shift Automatic Block System,which was widely used in our country’s railway sections.
基于我国铁路区间广泛使用的ZPW-2000A无绝缘移频自动闭塞制式,利用计算机仿真技术对区间的部分设备及功能进行了模拟。
3) automatic block with audio frequency shift modulated track circuit
移频自动闭塞
1.
Signal demodulation of automatic block with audio frequency shift modulated track circuits was implemented with a singe chip microcomputer.
本文将单片机技术用于实现移频自动闭塞系统的移频信号解调,结果表明该系统不仅能正确地从接收到的信号中提取出低频脉冲调制信号,还能有效地抑制由轨道电路引入的各种干扰,在各种复杂信道条件下都能获得较高的信噪比。
4) uninsulated frequency shift
无绝缘移频
1.
This paper expounds the faults occurring in the construction of the automatic block of ZPW—2000A uninsulated frequency shift,introduces the methods for diagnosing and eliminating the faults.
阐述了ZPW—2000A无绝缘移频自动闭塞施工中出现的故障,介绍了故障的判断方法与排除方法。
5) 18information frequency shift automatic block
18信息移频自动闭塞
6) moving automatic block
移动自动闭塞
1.
On this basis, computation formulas of train headway under fixed automatic block and moving automatic block are deduced in the paper.
在此基础上推导固定自动闭塞和移动自动闭塞系统下列车间隔的计算公式。
2.
According to the characteristics of CBTC (Communication Based Train Control) system, a train tracing model under moving automatic block of CBTC system was analyzed and the formal description of the tracing model was proposed.
针对基于通信的列车控制系统(CBTC)特点,首先分析了CBTC系统移动自动闭塞下的列车追踪模型,给出了模型的形式化描述,并依据此追踪模型采用分层有色Petri网(CPN)建立了两辆列车运行追踪过程的模型,仿真分析CBTC系统移动自动闭塞下的列车追踪特性。
补充资料:多普勒频移
多普勒频移
物理学术语。又称“多普勒频率”。由多普勒效应引起发射频率与运动目标反射波或散射波信号频率之间的频差。反射体引起的多普勒频移(fd)与发射频率(fs)的关系式为fd=(2Vcosθ)·fs,C为声速,V为反射体的运动速度,θ为反射体运动方向与声束指向之间的夹角。取超声诊断中的典型数据可算得血流。胎心检测中的多普勒频移(fd)均在声频范围之内,因此这类诊断仪器均可采用扬声器来监听。
说明:补充资料仅用于学习参考,请勿用于其它任何用途。
参考词条