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1.发明授权Measuring cable resistance in system for providing power over communication cable 有权测量通过电缆提供电力的系统中的电缆电阻公开(公告)号：US08552749B2
公开(公告)日：2013-10-08
申请号：US12527079
申请日：2007-10-23
CPC分类号： H04L12/10
摘要： A system for providing power to a powered device over a communication cable has a cable resistance measuring mechanism that determines values of response signals detected in response to supplying each of at least three reference signals over the communication cable, and determines the resistance of a pair of wires in the cable based on these values. The cable resistance measuring mechanism may be configured for determining resistance of an Ethernet cable that delivers power to the powered device in a Power over Ethernet system.
摘要翻译： 用于通过通信电缆向受电设备提供电力的系统具有电缆电阻测量机构，其确定响应于通过通信电缆提供至少三个参考信号中的每一个而检测到的响应信号的值，并且确定一对 根据这些值，电缆中的导线。 电缆电阻测量机构可以被配置为确定在以太网供电系统中向被动设备供电的以太网电缆的电阻。
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2.发明申请公开(公告)号：US20100141282A1
公开(公告)日：2010-06-10
申请号：US12527079
申请日：2007-10-23
IPC分类号： G01R27/08
CPC分类号： H04L12/10
摘要： A system for providing power to a powered device over a communication cable has a cable resistance measuring mechanism that determines values of response signals detected in response to supplying each of at least three reference signals over the communication cable, and determines the resistance of a pair of wires in the cable based on these values. The cable resistance measuring mechanism may be configured for determining resistance of an Ethernet cable that delivers power to the powered device in a Power over Ethernet system.
摘要翻译： 用于通过通信电缆向受电设备提供电力的系统具有电缆电阻测量机构，其确定响应于通过通信电缆提供至少三个参考信号中的每一个而检测到的响应信号的值，并且确定一对 根据这些值，电缆中的导线。 电缆电阻测量机构可以被配置为确定在以太网供电系统中向被动设备供电的以太网电缆的电阻。
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3.发明授权Distinguishing network interface card from short circuit condition in power over ethernet system 有权区分网络接口卡在以太网供电系统中的短路状态公开(公告)号：US07230412B2
公开(公告)日：2007-06-12
申请号：US11252585
申请日：2005-10-19
CPC分类号： H04L49/351 , H04L12/10
摘要： Novel system and methodology for distinguishing a Network Interface Card (NIC) from a short circuit condition in a Power over Ethernet (PoE) system. A system for providing power to a powered device (PD) includes a PD probing circuit that generates a detection signal supplied to a device being probed and determines a response signal produced in response to the detection signal, and a control circuit that determines a detection value based on the response signal. The control circuit detects a short circuit if the detection value is in a first predetermined range, and detects a NIC if the detection value is in a second predetermined range outside of the first predetermined range.
摘要翻译： 用于在以太网供电（PoE）系统中区分网络接口卡（NIC）与短路情况的新型系统和方法。 用于向被动设备（PD）提供电力的系统包括PD探测电路，其产生提供给被探测的设备的检测信号，并确定响应于检测信号而产生的响应信号;以及控制电路，其确定检测值 基于响应信号。 如果检测值处于第一预定范围，则控制电路检测短路，并且如果检测值处于第一预定范围之外的第二预定范围，则检测NIC。
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公开(公告)号：US07856561B2
公开(公告)日：2010-12-21
申请号：US11252607
申请日：2005-10-19
IPC分类号： G06F1/00 , G06F15/177 , G01R27/00 , G01R27/02
CPC分类号： H04L12/10
摘要： Novel system and methodology for detecting a Powered Device (PD) in a Power over Ethernet (PoE) system. A PD probing circuit generates a detection signal supplied to the PD and determines a PD response signal produced in response to the detection signal. Based on the PD response signal, the control circuit determines a detection value for identifying the PD. In particular, the control circuit concludes that the PD is a device satisfying a PoE standard if the detection value is in a first predetermined range, and concludes that the PD is a legacy PD device if the detection value is in a second predetermined range outside of the first predetermined range.
摘要翻译： 用于在以太网供电（PoE）系统中检测有源设备（PD）的新型系统和方法。 PD探测电路产生提供给PD的检测信号，并确定响应于检测信号而产生的PD响应信号。 基于PD响应信号，控制电路确定用于识别PD的检测值。 特别地，如果检测值在第一预定范围内，则PD是符合PoE标准的设备，并且如果检测值处于第二预定范围之外的第二预定范围内，则该结论为PD为传统PD设备 第一预定范围。
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5.发明授权Power sourcing equipment having auto-zero circuit for determining and controlling output current 有权具有自动调零电路的电源设备，用于确定和控制输出电流公开(公告)号：US07639469B2
公开(公告)日：2009-12-29
申请号：US11227289
申请日：2005-09-16
IPC分类号： H02H7/00
CPC分类号： H04L12/10 , H04L49/351
摘要： A novel system and methodology for controlling an output of Power Sourcing Equipment in a Power over Ethernet system based on a current limit threshold. The PSE has an auto-zero circuit for comparing a monitored output current of the PSE with the current limit threshold to control the output of the PSE.
摘要翻译： 一种基于电流限制阈值来控制以太网供电系统中的电力采购设备的输出的新型系统和方法。 PSE具有自动调零电路，用于将PSE的监控输出电流与电流限制阈值进行比较，以控制PSE的输出。
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公开(公告)号：US07613936B2
公开(公告)日：2009-11-03
申请号：US11252624
申请日：2005-10-19
IPC分类号： G06F1/00
CPC分类号： H04L49/351 , H02H3/12 , H04L12/10
摘要： Novel circuitry and methodology for detecting a Powered Device (PD) in a system for providing power to the PD. PD detection circuitry detects the PD in a first mode by providing detection current to probe the PD, and in a second mode by providing detection voltage to probe the PD. A control circuit determines that the PD is a valid device if the PD is detected both in the first mode and in the second mode.
摘要翻译： 用于检测用于向PD提供电力的系统中的受电设备（PD）的新型电路和方法。 PD检测电路通过提供检测电流来探测PD而在第一模式中检测PD，并且在第二模式中通过提供检测电压来探测PD。 如果在第一模式和第二模式都检测到PD，则控制电路确定PD是有效装置。
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公开(公告)号：US09176163B2
公开(公告)日：2015-11-03
申请号：US13448075
申请日：2012-04-16
摘要： An anemometer and method for analyzing fluid flow is described. In one embodiment, a transistor sensor is heated by applying power to cause its base-emitter junction to rise from an ambient first temperature to a second temperature. The power is removed, and the Vbe is measured at intervals as the junction cools. The Vbe equates to a temperature of the junction. The temperature exponentially decreases, and the time constant of the decay corresponds to the fluid flow velocity. A best fit curve analysis is performed on the temperature decay curve, and the time constant of the exponential decay is derived by a data processor. A transfer function correlates the time constant to the fluid flow velocity. The transistor is thermally coupled to a metal rod heat sink extending from the package, and the characteristics of the rod are controlled to adjust the performance of the anemometer.
摘要翻译： 描述了用于分析流体流动的风速计和方法。 在一个实施例中，通过施加功率来加热晶体管传感器，以使其基极 - 发射极结从环境温度升至第二温度。 功率被去除，并且Vbe在接头冷却时间隔测量。 Vbe等于交界处的温度。 温度指数下降，衰减的时间常数对应于流体流速。 对温度衰减曲线进行最佳拟合曲线分析，数据处理器得出指数衰减的时间常数。 传递函数将时间常数与流体流速相关联。 晶体管热耦合到从封装延伸的金属棒散热器，并且控制棒的特性以调节风速计的性能。
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公开(公告)号：US09024473B2
公开(公告)日：2015-05-05
申请号：US13590043
申请日：2012-08-20
申请人： Ryan Huff , Jeffrey Lynn Heath
发明人： Ryan Huff , Jeffrey Lynn Heath
CPC分类号： H04L12/10 , G06F1/266 , Y10T307/549 , Y10T307/604
摘要： A technique for combining power to a single load from multiple power supplies using power over Ethernet (PoE) is disclosed. Each power supply is coupled to associated power sourcing equipment (PSE) providing PoE, and each PSE has a current limit. The power supplies supply approximately the same voltage, but the output voltages are typically not exactly equal. All the power supplies are connected via diodes to a common load terminal. The power supply outputting the highest voltage first supplies power to the load terminal, since only its diode is forward biased, until a PoE current limit is reached. Then its duty cycle is limited. The load terminal voltage is then inherently lowered to cause the diode of the power supply with the next highest output voltage to connect it to the load to supply additional power to the load as the first power supply continues to supply its limited current.
摘要翻译： 公开了一种使用以太网供电（PoE）将电力与来自多个电源的单个负载组合的技术。 每个电源耦合到提供PoE的相关电源设备（PSE），并且每个PSE具有电流限制。 电源提供大致相同的电压，但是输出电压通常不完全相等。 所有电源通过二极管连接到公共负载端子。 输出最高电压的电源首先向负载端子供电，因为只有其二极管被正向偏置，直到达到PoE电流限制。 那么它的占空比是有限的。 然后负载端子电压固有地降低，使得具有次高输出电压的电源的二极管将其连接到负载，以在第一电源继续供应其有限电流时向负载提供附加电力。
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公开(公告)号：US08692576B2
公开(公告)日：2014-04-08
申请号：US11522408
申请日：2006-09-18
申请人： Jeffrey Lynn Heath
发明人： Jeffrey Lynn Heath
IPC分类号： H03K19/0175
CPC分类号： H03K19/018528 , H03K19/01707 , H03K19/01721
摘要： A level shifting circuit and methodology involving a switching current generator responsive to switching of an input signal for producing a switching current to switch an output signal, and a holding current generator for producing a holding current to hold the logic level of the output signal in accordance with the logic level of the input signal. The holding current is produced independently of the switching current.
摘要翻译： 一种电平移动电路和方法，涉及响应于用于产生开关电流以切换输出信号的输入信号的切换的开关电流发生器，以及用于产生保持电流以保持输出信号的逻辑电平的保持电流发生器 与输入信号的逻辑电平。 保持电流独立于开关电流产生。
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公开(公告)号：US07765420B2
公开(公告)日：2010-07-27
申请号：US11208630
申请日：2005-08-23
IPC分类号： G06F1/26
CPC分类号： G06F1/189
摘要： Novel system and protocol for controlling a sequence of events. The sequencing system has a master circuit for providing sequencing information defining a sequence of events using a sequencing signal, and at least one slave circuit responsive to the sequencing signal for producing at least one event signal defining an event. The master and slave circuits are configured for providing a bidirectional transfer of the sequencing information via a single wire.
摘要翻译： 用于控制事件序列的新型系统和协议。 排序系统具有主电路，用于使用定序信号提供定义事件序列的定序信息，以及响应于排序信号的至少一个从电路，用于产生定义事件的至少一个事件信号。 主电路和从电路被配置为经由单线提供排序信息的双向传送。
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