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11. 发明授权

US09465909B2 Systems and methods of discriminating DC arcs and load switching noise 有权
标题翻译：识别直流电弧和负载开关噪声的系统和方法
公开(公告)号：US09465909B2
公开(公告)日：2016-10-11
申请号：US13679039
申请日：2012-11-16
申请人： Keith W. Kawate , Jianhong Kang
发明人： Keith W. Kawate , Jianhong Kang
IPC分类号： G06F19/00 , H02H1/00 , H02H3/44 , G01R31/40 , G01R31/12 , H02S50/10
CPC分类号： G06F19/00 , G01R31/1227 , G01R31/40 , H02H1/0015 , H02H3/445 , H02S50/10
摘要： Systems and methods of detecting arcing in DC power systems that can differentiate between DC arcs and load-switching noise. The systems and methods can determine, within a plurality of predetermined time intervals, at least the pulse count (PC) per predetermined time interval, and the pulse duration (PD) per predetermined time interval, in which the PC and the PD can correspond to the number and the intensity of potential arcing events in a DC power system, respectively. The systems and methods can process the PC and PD using one or more arc fault detection algorithms, thereby differentiating between DC arcs and load-switching noise with increased reliability.
摘要翻译：在DC电力系统中检测电弧的系统和方法可以区分直流电弧和负载开关噪声。系统和方法可以在多个预定时间间隔内至少确定每个预定时间间隔的脉冲计数（PC）和每个预定时间间隔的脉冲持续时间（PD），其中PC和PD可对应于分别在直流电力系统中的电弧放电事件的数量和强度。系统和方法可以使用一个或多个电弧故障检测算法对PC和PD进行处理，从而在可靠性提高的情况下区分直流电弧和负载切换噪声。

12. 发明申请

US20130009483A1 POWER GENERATOR MODULE CONNECTIVITY CONTROL 审中-公开
标题翻译：发电机模块连接控制
公开(公告)号：US20130009483A1
公开(公告)日：2013-01-10
申请号：US13482911
申请日：2012-05-29
申请人： Keith W. Kawate , Christopher E. Pinette , John R. Wezowicz , Thomas R. Maher , Michael B. Rose
发明人： Keith W. Kawate , Christopher E. Pinette , John R. Wezowicz , Thomas R. Maher , Michael B. Rose
IPC分类号： H02J1/06
CPC分类号： H02J13/0003 , H01L31/02021 , H02H7/20 , H02J3/383 , H02J7/35 , H02S50/10 , Y02E10/563 , Y02E10/566 , Y02E40/72 , Y04S10/123 , Y10T307/685
摘要： A remote resource can be configured to control connectivity of the power generator modules in a string. For example, a respective power generator module can include a current sense circuit that monitors for presence of communication signal. The power generator module can monitor for a presence of a remotely generated control signal over power line that is used by the respective power generator module to convey power to the external load. If the control signal is present on the power line, as generated by the remote resource, the control circuit in the respective power generator module activates the switch to an ON state such that respective activated power generator module is connected in series with the other activated power generator modules. If no keep-alive control signal is detected within a timeout period, the controller deactivates the respective power generator module.
摘要翻译：远程资源可以配置为控制字符串中发电机模块的连接。例如，相应的发电机模块可以包括监视通信信号的存在的电流检测电路。发电机模块可以通过电力线监视远程生成的控制信号的存在，该功率管由相应的发电机模块用于向外部负载传送电力。如果由远程资源产生的电力线路上存在控制信号，则各个发电机模块中的控制电路将开关激活到接通状态，使得相应的激活的发电机模块与另一个激活的功率串联发电机模块。如果在超时时间内没有检测到保持控制信号，则控制器使相应的发电机模块停用。

13. 发明申请

US20100027176A1 ARC FAULT DETECTION APPARATUS EMPLOYING A COMPARATOR WITH A CONTINUOUSLY VARIABLE THRESHOLD 有权
标题翻译：使用连续可变阈值的比较器的ARC故障检测装置
公开(公告)号：US20100027176A1
公开(公告)日：2010-02-04
申请号：US12184297
申请日：2008-08-01
申请人： Keith W. Kawate , Lynwald Edmunds , Roger D. Mayer
发明人： Keith W. Kawate , Lynwald Edmunds , Roger D. Mayer
IPC分类号： H02H3/20
CPC分类号： H02H1/0015 , H02H3/006
摘要： An arc fault detection apparatus that provides for better discrimination of electrical arcing events from nuisance loads. The arc fault detection apparatus includes an arcing sense circuit having a comparator circuit with a variable threshold voltage that varies continuously with the line voltage. The arc fault detection apparatus has reduced susceptibility to nuisance tripping in the presence of sudden changes in the load current that occur outside of a specified time window centered on each zero crossing point of the line voltage.
摘要翻译：一种电弧故障检测装置，其能够更好地区分来自妨扰负载的电弧事件。电弧故障检测装置包括具有可变阈值电压的比较器电路的电弧感测电路，其随线电压连续变化。在存在以线路电压的每个过零点为中心的规定时间窗外的负载电流的突然变化的情况下，电弧故障检测装置降低了对妨碍跳闸的敏感性。

14. 发明授权

US07592819B2 Microprocessor-based capacitance measurement 有权
标题翻译：基于微处理器的电容测量
公开(公告)号：US07592819B2
公开(公告)日：2009-09-22
申请号：US11678158
申请日：2007-02-23
申请人： Keith W. Kawate , John A. Powning , Mark Genovese , Eric M. Visser
发明人： Keith W. Kawate , John A. Powning , Mark Genovese , Eric M. Visser
IPC分类号： G01R27/26
CPC分类号： G01R27/2605 , G01D5/24
摘要： An improved system and method of performing capacitance measurements that provides a fast digital response and a reduced output error. The capacitance measurement system includes a circuit configuration that has a variable capacitor and at least one reference capacitor connected to one another at a common node, which in turn is connected to the input of an analog-to-digital converter. The circuit configuration further includes an array of switches coupled between the variable and reference capacitors and the supply voltage, a reference voltage, and ground, respectively. The switched variable and reference capacitors are employed in conjunction with the A-to-D converter to perform, at the common node, a plurality of direct voltage measurements for use in generating an expression defining the capacitance of the variable capacitor.
摘要翻译：改进的提供快速数字响应和减少的输出误差的电容测量的系统和方法。电容测量系统包括具有可变电容器和在公共节点处彼此连接的至少一个参考电容器的电路配置，该公共节点又连接到模数转换器的输入。电路配置还包括分别耦合在可变参考电容器和参考电容器之间的开关阵列和电源电压，参考电压和接地。开关可变和参考电容器与A-D转换器一起使用，以在公共节点处执行多个直接电压测量，以用于产生定义可变电容器的电容的表达式。

15. 发明授权

US06642711B2 Digital inductive position sensor 失效
标题翻译：数字感应位置传感器
公开(公告)号：US06642711B2
公开(公告)日：2003-11-04
申请号：US10043406
申请日：2002-01-10
申请人： Keith W. Kawate , Gerhard A. Foelsche , Lidu Huang , Gerald H. Fleischfresser
发明人： Keith W. Kawate , Gerhard A. Foelsche , Lidu Huang , Gerald H. Fleischfresser
IPC分类号： G01B700
CPC分类号： G01D5/2291 , G01B7/003 , G01D5/2053 , G01D5/2225
摘要： A differential pulse transformer having a drive coil (10a) and differential sense coils (10b) are disposed on a planar surface with a target (10e, 10f) movable over the sense coils to cause an imbalance in magnetic field when a large di/dt pulse is generated in the drive coil. A detection circuit senses the imbalance and provides a digital output accurately identifying the position of the target. Coil and target embodiments include relatively small secondary coils and relatively long targets (10b, 10e/10f; 12b, 12e/12f and 14b) and relatively large secondary coils and short targets (16b, 16c; 18b, 18c; 20b and 22b).
摘要翻译：具有驱动线圈（10a）和差分感测线圈（10b）的差分脉冲变压器设置在平面上，其中可以在感测线圈上移动的目标（10e，10f）在大的di / dt 在驱动线圈中产生脉冲。检测电路感测到不平衡，并提供准确识别目标位置的数字输出。线圈和目标实施例包括相对较小的次级线圈和相对长的目标（10b，10e / 10f; 12b，12e / 12f和14b）和相对较大的次级线圈和短目标（16b，16c; 18b，18c; 20b和22b）。

16. 发明授权

US5767670A Method and apparatus for providing improved temperature compensated output for variable differential transformer system 失效
标题翻译：为可变差动变压器系统提供改进的温度补偿输出的方法和装置
公开(公告)号：US5767670A
公开(公告)日：1998-06-16
申请号：US705491
申请日：1996-08-29
申请人： Thomas R. Maher , Keith W. Kawate
发明人： Thomas R. Maher , Keith W. Kawate
IPC分类号： G01D3/028 , G01D5/22 , G01B7/14 , G01B7/30 , G01D3/02
CPC分类号： G01D3/028 , G01D5/2291
摘要： A variable differential transformer system (10), both linear and rotary (L/RVDT) includes a primary coil (12) drive by a primary drive (20) having a triangle wave generator whose frequency is set by an external frequency control (R.sub.osc and C.sub.osc) which provides compensation for gain temperature error. Secondary coils (14, 16) have a common connection for balanced loading with an input stage arrangement (R7, R8, R9, R10) providing low common mode range and a way to differentiate between normal operation and coil faults detected by a fault detection network (28). Synchronous demodulation (22) extracts both magnitude and direction from the secondary coil signals. Electronic calibration (24) compensates for sensor offset and adjust circuit gain by adding a percentage of the synchronous demodulation reference waveform to the secondary differential voltage. A filter network (26) averages the synchronous demodulated signal in order to extract the DC component of the waveform which is amplified (30) to provide drive current to interface with external loads. A variable rotary core assembly (18) and a variable linear core assembly (18') are shown which allow axial adjustment of the core relative to the coils to provide balancing of the out-of-phase component of the secondary voltage waveform to provide offset temperature error compensation without significantly affecting the in-phase component of the secondary waveform.
摘要翻译：线性和旋转式（L / RVDT）的可变差动变压器系统（10）包括由具有三角波发生器的主驱动器（20）驱动的初级线圈（12），其频率由外部频率控制（Rosc和 Cosc），为增益温度误差提供补偿。二次线圈（14,16）具有用于平衡负载的共同连接，具有提供低共模范围的输入级布置（R7，R8，R9，R10）和区分由故障检测网络检测到的正常操作和线圈故障的方式（28）。同步解调（22）从次级线圈信号中提取幅度和方向。电子校准（24）通过将同步解调参考波形的百分比加到二次差分电压来补偿传感器偏移并调整电路增益。滤波器网络（26）对同步解调信号进行平均，以提取被放大（30）的波形的DC分量，以提供与外部负载接口的驱动电流。示出了可变旋转芯组件（18）和可变线性芯组件（18'），其允许芯相对于线圈的轴向调节，以提供次级电压波形的异相分量的平衡，以提供偏移温度误差补偿，而不会显着影响次级波形的同相分量。

17. 发明授权

US5485345A Pressure transducer apparatus 失效
标题翻译：压力传感器装置
公开(公告)号：US5485345A
公开(公告)日：1996-01-16
申请号：US339039
申请日：1994-11-14
申请人： Stanley J. Lukasiewicz , Robert P. Bishop , Robert O. Southworth , Keith W. Kawate
发明人： Stanley J. Lukasiewicz , Robert P. Bishop , Robert O. Southworth , Keith W. Kawate
IPC分类号： G01L9/00 , H01G7/00 , G01L9/12
CPC分类号： G01L9/0075 , G01L13/026
摘要： A monolithic capacitive differential pressure transducer (10, 44,) is shown composed of ceramic material having first and second cavities formed adjacent to opposed face surfaces to form first and second flexible diaphragms (12, 14; 50, 52) and a motion transfer pin (24, 58) attached to and extending between the diaphragms. Capacitor plates are disposed on a surface of at least one flexible diaphragm and a stationary member to form a capacitive gap. Component parts are first pressed from ceramic powder and assembled into a unit using one of several methods including relatively high pressure to press them together or using a combination of low pressure along with raising the temperature of the material to soften the binder in the ceramic material at surfaces of the parts which are to be joined together. Selected gaps, both along the x-y direction and along the z direction may be obtained, particularly in assembling the parts using high pressure using consumable spacer material which is sublimated in a debinderization cycle prior to sintering of the unit to form a monolithic body.
摘要翻译：示出了由陶瓷材料组成的单片电容差压变换器（10,44），其具有邻近相对的表面形成的第一和第二空腔，以形成第一和第二柔性隔膜（12,14; 50,52）和运动传递销（24,58），其连接到膜片之间并在膜片之间延伸。电容板设置在至少一个柔性隔膜和静止构件的表面上以形成电容间隙。组分部分首先从陶瓷粉末压制并组装成单元，使用包括较高压力在内的几种方法之一将其压在一起，或者使用低压组合以及提高材料的温度来软化陶瓷材料中的粘合剂要连接在一起的部件的表面。可以获得沿着x-y方向和z方向两者的选择的间隙，特别是在使用消耗性隔离材料组装使用高压的部件之前，在烧结单元之前在脱胶循环中升华以形成整体式。

18. 发明授权

US5444590A Solid state power controller with power switch protection apparatus 失效
标题翻译：带电源开关保护装置的固态电源控制器
公开(公告)号：US5444590A
公开(公告)日：1995-08-22
申请号：US985411
申请日：1992-12-04
申请人： Norman E. LeComte , Sepideh H. Nott , Keith W. Kawate , Thomas R. Maher
发明人： Norman E. LeComte , Sepideh H. Nott , Keith W. Kawate , Thomas R. Maher
IPC分类号： H02H3/093 , H03K17/08 , H03K17/082 , H03K17/16 , H02H7/10
CPC分类号： H03K17/166 , H02H3/093 , H03K17/0822 , H03K2017/0806
摘要： A solid state power controller for switching power on and off to an electrical load which also serves as a circuit protection device protecting the load and/or the wire connected between the load output terminal of the controller and ground from thermal damage due to current overload is shown. When a current overload exists the controller interrupts current to the load in a time inversely proportional to the square of the magnitude of the overload as shown in a trip time vs load current curve. The controller also limits the load current to a selected maximum level by controlling the drain-source resistance of power MOSFETs used for switching the power. A secondary interrupt is provided in the event that the junction temperature of the MOSFETs has risen a selected maximum level. A thermal memory feature is included for both interrupt signals. The controller is controlled by a single on/off input line and provides both a status and trip output line to indicate its state. The status can be configured to monitor load voltage or load current flow as desired. The controller also can be configured to default to either an on or off state in the event the input line is disconnected.
摘要翻译：一种固态电源控制器，用于将电源开关切换到电负载，该电负载也用作保护负载和/或连接在控制器的负载输出端子与地之间的电线免受电流过载导致的热损伤的电路保护装置，显示。当存在电流过载时，控制器将在与负载电流曲线所示的过载幅度的平方成反比的时间内中断负载电流。控制器还通过控制用于切换电源的功率MOSFET的漏极 - 源极电阻将负载电流限制到所选的最大电平。在MOSFET的结温上升到所选择的最大电平的情况下，提供二次中断。两个中断信号都包含一个热存储器功能。控制器由单个开/关输入线控制，并提供状态和跳闸输出线以指示其状态。该状态可以配置为根据需要监视负载电压或负载电流。在输入线断开的情况下，控制器也可以配置为默认为开或关状态。

19. 发明授权

US5057811A Electrothermal sensor 失效
标题翻译：电热传感器
公开(公告)号：US5057811A
公开(公告)日：1991-10-15
申请号：US289294
申请日：1988-12-22
申请人： Douglas B. Strott , Timothy White , Keith W. Kawate , Thomas Wiecek , Carleton M. Cobb, III , Sepideh H. Nott
发明人： Douglas B. Strott , Timothy White , Keith W. Kawate , Thomas Wiecek , Carleton M. Cobb, III , Sepideh H. Nott
IPC分类号： G01K7/22 , H02H3/08 , H02H6/00
CPC分类号： H02H3/085 , H02H6/00
摘要： An electrothermal sensor is shown having an electrically conductive substrate, an electrically insulating layer disposed on the substrate, a first thermistor disposed on a central region of the electrically insulating layer, a second thermistor disposed adjacent an edge of the electrically insulating layer, an electrical coupling device on the electrically insulating layer for coupling the first and second thermistors externally of the electrically insulating layer and a pair of electrical connecting devices coupled to the substrate and passing through the electrically insulating layer, the first thermistor being disposed between the pair of electrical connecting devices.

20. 发明授权

US4496895A Universal single phase motor starting control apparatus 失效
标题翻译：通用单相电机启动控制装置
公开(公告)号：US4496895A
公开(公告)日：1985-01-29
申请号：US492537
申请日：1983-05-09
申请人： Keith W. Kawate , Richard W. Strachan, deceased
发明人： Keith W. Kawate , Richard W. Strachan, deceased
IPC分类号： H02P1/42 , H02P1/44
CPC分类号： H02P1/42
摘要： A starting circuit for single phase electric motors including both split-phase and capacitor start motors includes a gate controlled solid state switch serially connected to the start winding of the motor. Rectified reference pulses from a pulse transformer are generated to turn on a first transistor to provide gating current for the solid state switch. Initially, when the motor is energized at zero rpm, the pulses are received at the switch after the start winding current passes through the zero current level to gate the switch to conduct each half cycle and energize the start winding however as the motor speeds up, the pulses are received earlier and earlier relative to the start winding current zero cross over until at a selected speed the pulses are received at the switch prior to the start winding current zero cross over with the result that the switch is no longer gated conductive. When this occurs, the voltage across the switch goes high. This voltage is rectified and received at the base of a second transistor adapted to shunt the pulses from the pulse transformer away from the first transistor to lock out the switch with the start winding deenergized. In a first embodiment the pulse transformer is energized by the main winding current to directly employ the phase difference between main winding current and start winding current while in a second embodiment the pulse transformer is energized by line current to directly employ the phase difference between line current and start winding current.
摘要翻译：包括分相和电容起动电动机的单相电动机的起动电路包括串联连接到电动机起动绕组的门控固态开关。产生来自脉冲变压器的整流的参考脉冲，以接通第一晶体管以为固态开关提供门控电流。最初，当电机以零rpm通电时，在起动绕组电流通过零电流电平之后，开关处接收脉冲以对开关进行栅极导通每个半周期，并且在电机加速时给启动绕组通电，脉冲相对于起始绕组电流零交叉更早和更早地接收，直到以选定的速度在开始绕组电流过零之前在开关处接收脉冲，结果是开关不再选通导通。当这种情况发生时，开关上的电压变高。该电压在第二晶体管的基极处被整流并接收，该第二晶体管适于将来自脉冲变压器的脉冲从第一晶体管分流，以将起动绕组断电时锁定开关。在第一实施例中，脉冲变压器由主绕组电流通电，以直接采用主绕组电流和起动绕组电流之间的相位差，而在第二实施例中，脉冲变压器由线电流通电直接采用线路电流之间的相位差并开始卷绕电流。

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