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20 条记录 (耗时 0.017 秒)

    Relay ladder control system for simulation and monitoring
    4.
    发明授权
    Relay ladder control system for simulation and monitoring 失效

    公开(公告)号：US5777869A

    公开(公告)日：1998-07-07

    申请号：US353181

    申请日：1994-12-09

    申请人： John T. Welch

    发明人： John T. Welch

    IPC分类号： G05B19/05 ,  G06F19/00 ,  G06F9/305

    CPC分类号： G05B19/056

    摘要： An improved method of implementing and solving relay ladder logic, such as in programmable logic controllers, more efficiently to allow greater flexibility is provided. Solving relay ladder logic is performed with scan times dependent only upon the number of input and state changes on a scan, and the resulting number of flow changes at ladder connectors. The scan time will therefore be independent of the size of the ladder. The method comprises the steps of recording the structure of a relay ladder and the current flow on the ladder via a ladder coding convention which specifies adjacent relay ladder connections for a particular diagram. Based upon input or state variable changes or events, the process of the invention will act to toggle all of the ladder contacts associated with these events between open and closed positions. This procedure is accomplished by following precomputed lists of such contacts which will be affected by a particular event or change in system model variables. Once the scan events have been posted in the ladder, the scan continues with a processing sweep which computes flow change across one column of the ladder at a time. In each column during a scan, each posted event which has been updated in the control model may be retrieved and expanded across the ladder to vertical paths of the next column to the right in the ladder. When the column sweep reaches a coil element, the changed state variable will be output and retained for the next scan calculation. The relay logic event sweep performs a left to right computation of events or changes in the input or state variables of the control model ladder flow, such that the computation will always move downstream with respect to the power flow on the ladder. This insures that flow change is not doubly calculated on the same scan, returning to an original value. The process maintains a complete record of ladder flow on every scan, and is adaptable to any relay ladder logic system, having no formatting restrictions.

    Pyrazinoic acid esters as anti-mycobacterium avium agents
    5.
    发明授权
    Pyrazinoic acid esters as anti-mycobacterium avium agents 失效
    吡嗪酸酯作为抗分枝杆菌的鸟类药剂

    公开(公告)号：US5643912A

    公开(公告)日：1997-07-01

    申请号：US584707

    申请日：1996-01-11

    申请人： Michael Henry Cynamon ,  John T. Welch

    发明人： Michael Henry Cynamon ,  John T. Welch

    IPC分类号： C07D241/24 ,  A61K31/495 ,  C07D241/18

    CPC分类号： C07D241/24

    摘要： Compounds of formula II ##STR1## wherein R.sup.1 is a hydrocarbon, halogenated hydrocarbon, polyether, substituted phenyl, substituted benzyl or alkylamine; and R.sup.2, R.sup.3 and R.sup.4 are hydrogen, lower alkyl, halogen, haloalkyl, alkoxy and similar substituents are disclosed. The compounds are useful in the treatment of M. avium. Methods and compositions utilizing novel as well as known compounds are disclosed.

    摘要翻译： 式II的化合物其中R 1是烃，卤代烃，聚醚，取代的苯基，取代的苄基或烷基胺; 并且R 2，R 3和R 4是氢，低级烷基，卤素，卤代烷基，烷氧基和类似的取代基。 这些化合物可用于治疗鸟分枝杆菌。 公开了利用新型和已知化合物的方法和组合物。

    Peltier temperature control system for electronic components
    7.
    发明授权
    Peltier temperature control system for electronic components 有权
    用于电子元件的珀尔帖温度控制系统

    公开(公告)号：US07082772B2

    公开(公告)日：2006-08-01

    申请号：US10645882

    申请日：2003-08-20

    申请人： John T. Welch

    发明人： John T. Welch

    IPC分类号： F25B21/02

    CPC分类号： F25B21/04 ,  F25B2321/0212 ,  F25B2321/0251 ,  F25B2700/02 ,  F25D2700/16 ,  H01L23/38 ,  H01L35/00 ,  H01L2924/0002 ,  H01L2924/00

    摘要： A cooling system for audio equipment uses a temperature sensor and Peltier effect module in a feedback control loop. The cooling system reads the temperature sensor to obtain the temperature of an audio component of the equipment, and adjusts the drive for the Peltier effect module that cools the audio component, to prevent overheating of the component. The cooling system may include an autonomous power supply that generates electric power from the audio signal driving a loudspeaker of the audio system. In another embodiment, the cooling system cools an audio component installed in a vehicle, even when the vehicle is unattended. To prevent discharge of the vehicle's battery, the cooling system employs a battery supervisor for turning the cooling system off when the battery has discharged down to a predetermined state.

    摘要翻译： 音频设备的冷却系统在反馈控制环路中使用温度传感器和珀耳帖效应模块。 冷却系统读取温度传感器以获得设备的音频组件的温度，并调节冷却音频组件的Peltier效果模块的驱动器，以防止组件过热。 冷却系统可以包括从驱动音频系统的扬声器的音频信号产生电力的自主电源。 在另一个实施例中，即使当车辆无人值守时，冷却系统也会冷却安装在车辆中的音频组件。 为了防止车辆电池的放电，当电池已经放电到预定状态时，冷却系统采用电池管理器来关闭冷却系统。

    Silver precursors for CVD processes
    8.
    发明授权
    Silver precursors for CVD processes 有权
    CVD工艺的银前体

    公开(公告)号：US06613924B1

    公开(公告)日：2003-09-02

    申请号：US09447974

    申请日：1999-11-23

    申请人： John T. Welch ,  Silvana C. Ngo ,  Kulbinder K. Banger

    发明人： John T. Welch ,  Silvana C. Ngo ,  Kulbinder K. Banger

    IPC分类号： C07F110

    CPC分类号： C07F1/005 ,  C07C45/77 ,  C07C49/92

    摘要： Organosilver complexes with &bgr;-diketonates and neutral coordinating ligands are useful as silver precursors in chemical vapor deposition processes. The &bgr;-diketonates include 1,1,1,5,5,5-hexafluoro-2,4-pentanedionate (hfac), acetylacetonate (acac), 2,2,6,6-tetramethyl-3,5-heptanedionate (tmhd), 1,1,1-trifluoro-2,4-pentanedionate, (tfac), 2,2,7-trimethyl-3,5-octanedionate (tmod), 1,1,1-trifluoro-5,5-dimethyl-2,4-pentanedionate (tfh) 1,1,1,2,2,3,3,7,7,8,8,9,9,9-tetradecafluoro-4,6-nonanedionate (tdf). Neutral coordinating ligands include triphenylphosphine, tributylphosphine, pyridine, tetramethylethanediamine (TMEDA) and tetramethylpropanediamine (TMPDA).

    摘要翻译： 有机硅复合物与β-二酮和中性配位配体可用作化学气相沉积工艺中的银前体。 β-二酮酸酯包括1,1,1,5,5,5-六氟-2,4-戊二酮（hfac），乙酰丙酮酸（acac），2,2,6,6-四甲基-3,5-庚二酮酸（tmhd） ），1,1,1-三氟-2,4-戊二酮，（tfac），2,2,7-三甲基-3,5-辛二酮（tmod），1,1,1-三氟-5,5-二甲基 -2,4-戊二酮（tfh）1,1,1,2,2,3,3,7,7,8,8,9,9,9-十四氟-4,6-壬二酮酸酯（tdf）。 中性配位配体包括三苯基膦，三丁基膦，吡啶，四甲基乙二胺（TMEDA）和四甲基丙二胺（TMPDA）。

    Programmable gate array for relay ladder logic
    10.
    发明授权
    Programmable gate array for relay ladder logic 失效
    用于梯形逻辑的可编程门阵列

    公开(公告)号：US5731712A

    公开(公告)日：1998-03-24

    申请号：US555731

    申请日：1995-11-09

    申请人： John T. Welch

    发明人： John T. Welch

    IPC分类号： G05B19/05 ,  H03K19/173 ,  H03K19/177

    CPC分类号： H03K19/17704 ,  G05B19/056 ,  H03K19/1736 ,  G05B2219/13026 ,  G05B2219/15057

    摘要： An architecture is provided for field programmable gate army (FPGA) devices which implement relay ladder logic in PLC systems. Once the device is programmed, the implemented logic is executed in rung parallel fashion at electronic speeds. A direct correspondence of these devices in detail to relay ladder logic assures that technology mapping software for the FPGA device will run sufficiently fast for use in PLC systems. A reversible device programming method is required, so that the device can be reprogrammed conveniently to different relay ladder models. The architecture scales to families of devices of differing sizes and resources. A basic relay ladder logic is implemented, which supports various relay ladder logic dialects.

    摘要翻译： 为PLC系统中实现梯形逻辑的现场可编程门阵列（FPGA）器件提供了架构。 一旦设备被编程，所实现的逻辑以电子速度的并行方式执行。 这些器件与继电器梯形图逻辑的直接对应保证了FPGA器件的技术映射软件将足够快地运行，以便在PLC系统中使用。 需要一种可逆的设备编程方法，使设备可以方便地重新编程到不同的梯形梯型。 该架构可以扩展到不同规模和资源的设备系列。 实现了基本的梯形逻辑，支持各种梯形逻辑方式。