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1. 发明授权

US3969654A Propulsion train line encoder for a train speed regulation system 失效
标题翻译：用于列车调速系统的推进列车编码器
公开(公告)号：US3969654A
公开(公告)日：1976-07-13
申请号：US581224
申请日：1975-05-27
申请人： Reed H. Grundy , Joseph J. Pierro
发明人： Reed H. Grundy , Joseph J. Pierro
IPC分类号： B60L15/20 , H02P7/00
CPC分类号： B60L15/20 , B60L2200/26 , Y02T10/645 , Y02T10/7275
摘要： A reversible binary counter unit receives periodic clock pulses from associated advance train line apparatus, one pulse at the end of each cycle of operation of the ATL apparatus to vary train propulsion level in car by car steps. The counter adds or subtracts each pulse in accord with the condition of an up/down direction signal representing the sign of the train speed error. The BCD output of the counter is converted into decimal form and applied to a "select and/or" logic network which energizes the train line relay corresponding to the base propulsion level designated by the decimal count and all lower level train line relays. When the counter reaches either count limit, under a corresponding direction signal, further counting operation is inhibited through a logic network. The inhibit network also compares the existing propulsion level with a table of maximum propulsion levels selected for each range of allowed speeds and inhibits any increase beyond the preselected limit, thus enforcing the propulsion limits. The PTL apparatus also transmits a saturation signal to inhibit operation of the ATL apparatus when a propulsion level limit or maximum level is encoded.
摘要翻译：可逆二进制计数器单元接收来自相关联的高级列车线设备的周期性时钟脉冲，在ATL设备的每个循环操作结束时的一个脉冲，以通过汽车步骤来改变轿厢中的列车推进水平。计数器根据表示列车速度误差的符号的上/下方向信号的条件来增加或减少每个脉冲。计数器的BCD输出转换为十进制形式，并应用于“选择和/或”逻辑网络，该逻辑网络对与由十进制计数和所有较低级列车线路继电器指定的基础推进级别相对应的列车线路继电器通电。当计数器达到计数限制时，在相应的方向信号下，通过逻辑网络禁止进一步的计数操作。抑制网络还将现有的推进水平与为每个允许速度范围选择的最大推进水平表进行比较，并且抑制超出预选极限的任何增加，从而实施推进极限。当推进级限制或最大级别被编码时，PTL装置还发送饱和信号以禁止ATL装置的操作。

2. 发明授权

US4314234A Test set for railway cab signal system 失效
标题翻译：铁路驾驶室信号系统试验台
公开(公告)号：US4314234A
公开(公告)日：1982-02-02
申请号：US103885
申请日：1979-12-17
申请人： John O. G. Darrow , Joseph J. Pierro
发明人： John O. G. Darrow , Joseph J. Pierro
IPC分类号： B61L1/20 , G01R31/00 , H04B17/00 , G01R27/26 , H04Q1/20
CPC分类号： G01R31/008 , B61L1/20
摘要： An electronic cab signal test set employing an integrated circuit code oscillator for producing a code signal and an integrated circuit carrier oscillator for producing a carrier signal which is modulated by the code signal to produce a code carrier signal. The coded carrier signal drives a current source which injects current signals directly into a pair of series aiding pickup coils for testing the integrity of the pickup coils and for checking the sensitivity of the amplifier. An indicating circuit including a voltage sensing device, a switching circuit, and an illuminating device connected to the code carrier for evaluating the condition of the d.c. supply source and for indicating that the test set is properly functioning.
摘要翻译：一种采用集成电路代码振荡器产生代码信号的电子驾驶室信号测试装置和用于产生由码信号调制以产生码载波信号的载波信号的集成电路载波振荡器。编码的载波信号驱动电流源，其将电流信号直接注入到一对串联辅助拾取线圈中，用于测试拾取线圈的完整性并检查放大器的灵敏度。一种指示电路，包括电压检测装置，开关电路和连接到代码载体的照明装置，用于评估直流的状态。供应源，并指示测试仪是否正常工作。

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