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    • 6. 发明申请
    • Wayside LED signal for railroad and transit applications
    • 路面LED信号用于铁路和运输应用
    • US20050062481A1
    • 2005-03-24
    • US10664656
    • 2003-09-19
    • Thomas VaughnJim WalkerH. Wilson
    • Thomas VaughnJim WalkerH. Wilson
    • B61L5/18G01R31/26G01R31/44H05B33/08G01R31/00
    • H05B33/089B61L5/1881B61L2207/02G01R31/2635G01R31/44
    • A LED signal lamp that monitors, controls and tests the operational status of a plurality of LEDs. A separate current source is provided for each LED and resistors are in series between the current sources and LEDs. Analog-to-digital converters monitor the voltages at the resistors and LEDs and convert the voltages to digital form for a data processor. The data processor determines the junction temperature of each LED, controls the amount of current supplied to each LED and tests the operational status of each LED by matching its characteristics to a known diode curve. A pulse-width modulator provides further control of the amount of power supplied to the current sources. The data processor further controls a vital disconnect and a vital load. An energy storage/limiter circuit stores energy for the data processor during the absence of normal power input. Related methods of monitoring, controlling and testing such an LED system are also disclosed.
    • 一个LED信号灯,用于监视,控制和测试多个LED的工作状态。 为每个LED提供单独的电流源,电阻源和LED之间串联电阻。 模数转换器监控电阻和LED上的电压,并将数据转换为数字处理器的数字形式。 数据处理器确定每个LED的结温,控制提供给每个LED的电流量,并通过将其特性与已知二极管曲线相匹配来测试每个LED的工作状态。 脉冲宽度调制器进一步控制提供给电流源的功率量。 数据处理器进一步控制重要的断开和重要的负载。 能量存储/限幅器电路在没有正常功率输入时为数据处理器存储能量。 还公开了监视,控制和测试这种LED系统的相关方法。
    • 7. 发明申请
    • Systems and methods for externally monitoring equipment use
    • 用于外部监测设备使用的系统和方法
    • US20060080063A1
    • 2006-04-13
    • US10850853
    • 2004-05-21
    • Thomas Vaughn
    • Thomas Vaughn
    • G06F17/40
    • G07C3/02
    • Systems and methods that can externally meter and display cumulative, noncumulative, and re-settable service hours for monitored equipment as well as provide data associated with incremental amounts of equipment usage (e.g., hours, days, etc.). System external interfaces with metered equipment to determine usage. Systems and methods of use for recording the total units of cumulative, incremental and re-settable use of equipment, such as publicly available electromechanical equipment rentals (e.g., carpet cleaners, lawn maintenance equipment, electrical generators, and audio/visual equipment. Equipment-mounted meter can performs as a data recorder for tracking metered equipment usage. A monitoring unit associated with metered equipment can be battery powered and self contained. A handheld device is adaptable to communicate with, interrogate and reset functions for metered equipment.
    • 系统和方法可以外部监测和显示监控设备的累积,非累积和可重新设置的服务时间,并提供与增加设备使用量(例如,小时,天等)相关的数据。 系统外部接口与计量设备确定使用情况。 用于记录累计,增量和可重新使用设备的总单位的系统和方法,例如公共机电设备租赁(例如地毯清洁剂,草坪维护设备,发电机和音频/视频设备) 安装的仪表可以作为跟踪计量设备使用的数据记录器,与计量设备相关的监控单元可以由电池供电和自包含,手持设备适用于与计量设备通信,询问和复位功能。