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1. 发明授权

US08566050B2 Vital current sensor 有权
标题翻译：电流传感器
公开(公告)号：US08566050B2
公开(公告)日：2013-10-22
申请号：US12968944
申请日：2010-12-15
申请人： James R. Hoelscher
发明人： James R. Hoelscher
IPC分类号： G06F19/00 , G08B5/00
CPC分类号： G01R35/00 , G01R15/183
摘要： A system for sensing current that includes a processor and a current sensor coupled to the processor. The current sensor includes a sensor threshold value. The system also includes a current generator coupled to the current sensor. The current generator is operable to generate a test current signal defined by a time-varying linear function. The current sensor is operable to be coupled to an external current source and to output a sensor output signal based on a detected current to the processor. The processor is operable to determine a magnitude of the sensor threshold value based on the sensor output signal.
摘要翻译：一种用于感测电流的系统，其包括耦合到处理器的处理器和电流传感器。电流传感器包括传感器阈值。该系统还包括耦合到电流传感器的电流发生器。电流发生器可操作以产生由时变线性函数定义的测试电流信号。电流传感器可操作以耦合到外部电流源，并且基于检测到的电流将输出信号输出到处理器。处理器可操作以基于传感器输出信号确定传感器阈值的大小。

2. 发明授权

US08668169B2 Communications based crossing control for locomotive-centric systems 有权
标题翻译：以机车为中心的系统的基于通信的交叉控制
公开(公告)号：US08668169B2
公开(公告)日：2014-03-11
申请号：US13078464
申请日：2011-04-01
申请人： Kevin Nichter
发明人： Kevin Nichter
IPC分类号： B61L29/24
CPC分类号： B61L25/025 , B61L15/0027 , B61L25/021 , B61L29/28 , B61L29/32 , B61L2205/04
摘要： A train equipped with an onboard system for determining its position and a track database for determining the positions of upcoming grade crossings sends activate after expiration messages to control wayside warning systems at the crossings to achieve a constant warning time while maintaining a safety margin that ensures the train can be stopped if the wayside systems do not respond correctly to the activate after expiration messages. The system may be used in place of existing track-based crossing warning system control circuits. Communications between the train may be radio-based, and may be direct between the train and wayside devices or may be routed through a central station, which may act as a relay or maintain a database. The train may control multiple crossings at one time, thereby eliminating the need for downstream adjacent crossing control.
摘要翻译：装备有用于确定其位置的车载系统的火车和用于确定即将到来的等级交叉点的位置的轨道数据库在过期消息之后发送激活以在过境点处控制路边警告系统以实现恒定的警告时间，同时保持安全裕度，以确保如果路边系统对过期消息后的激活无效，则可以停止列车。该系统可以用于代替现有的基于轨道的交叉警告系统控制电路。列车之间的通信可以是基于无线电的，并且可以直接在火车和路边设备之间，或者可以通过可以用作中继站或维护数据库的中央站路由。列车可以同时控制多个交叉口，从而消除对下游相邻交叉口控制的需要。

3. 发明授权

US08660215B2 Decoding algorithm for frequency shift key communications 有权
标题翻译：频移键通讯解码算法
公开(公告)号：US08660215B2
公开(公告)日：2014-02-25
申请号：US12724800
申请日：2010-03-16
申请人： Brian Joseph Hogan
发明人： Brian Joseph Hogan
IPC分类号： H03D3/00 , H04L27/14
CPC分类号： H04L27/1563 , B61L1/188 , B61L3/243 , H04L27/156
摘要： A method and apparatus for decoding binary frequency shift key signals in which an exclusive-OR of the sign of a real waveform with a sign of the imaginary waveform at a time shortly after the real (or, alternatively, the imaginary) waveform crosses zero is used to determine a bit represented by the signal. In some embodiments, particularly those in which the bit period is about one-half of the carrier signal frequency, both the real and imaginary waveforms are monitored to detect the zero crossing in order to account for the situation in which data transitions prevent zero-crossings on one of the waveforms.
摘要翻译：二进制频移键控信号的解码方法和装置，其中实际波形的符号与真实波形（或虚拟波形）之后不久的虚数波形的符号异或，用于确定由信号表示的位。在一些实施例中，特别是其中位周期大约是载波信号频率的一半的实施例中，监视实波和虚波两者以检测零交叉，以便考虑数据转换防止过零的情况在其中一个波形。

4. 发明授权

US08601739B2 Gate arm saver 有权
标题翻译：门防臂
公开(公告)号：US08601739B2
公开(公告)日：2013-12-10
申请号：US13225169
申请日：2011-09-02
申请人： Jerry C. Deitchman
发明人： Jerry C. Deitchman
IPC分类号： B61L29/04
CPC分类号： B61L29/04 , E01F13/06
摘要： A gate arm saver is provided. The gate arm saver includes a cam and cam follower arrangement. A biasing element biases the cam follower into engagement with a detent formed in the cam upon rotation of the cam from a rest position due a loading placed upon a gate arm extending from the gate arm saver.
摘要翻译：提供门防臂。门臂保护器包括凸轮和凸轮从动装置。偏置元件由于位于从门臂保护器延伸的门臂上的负载而将凸轮从动件偏压到与凸轮形成的制动器接合，所述制动器从静止位置旋转时将其转动。

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