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51.发明授权Method and apparatus for determining electric motor speed using vibration and flux 失效使用振动和通量确定电动机速度的方法和装置
公开(公告)号：US6087796A
公开(公告)日：2000-07-11
申请号：US98182
申请日：1998-06-16
摘要： A programmable apparatus is used to determine the running speed of an ac induction motor based on vibration and flux measurements. A first analysis is performed on at least one of the vibration and flux signals according to a first criterion to determine candidate speeds and whether speed will be determined based on the first analysis or whether a second analysis is required. A second analysis is selectively performed if required by the first analysis. In the first analysis, vibration signals (for example) are transformed to the frequency domain, such as by Fast Fourier Transform, and vibration amplitude peaks contained in the resulting spectrum are analyzed to identify candidate peaks. If only one candidate peak is identified, the frequency at which the candidate peak occurs is used to determine motor running speed. If two or more candidate peaks are identified and the motor is a two-pole motor, the candidate peak having the maximum amplitude is used to determine running speed. If two or more candidate peaks are identified and the motor has more than two poles, a second analysis is performed by producing a flux spectrum. Peaks at various frequencies within the flux spectrum are compared to the candidate peaks and each candidate peak is scored based on the comparison. The scores are compared to a predetermined score threshold to determine which candidate peak will be used to determine motor running speed. Preferably, each candidate peak is also subjected to testing to determine whether the candidate peak accurately represents the frequency at which the true peak occurs.
摘要翻译： 基于振动和通量测量，可编程装置用于确定交流感应电动机的运行速度。 根据第一准则对振动和通量信号中的至少一个进行第一次分析，以确定候选速度以及是否将基于第一分析确定速度或者是否需要第二分析。 如果第一次分析需要，则选择性地进行第二次分析。 在第一次分析中，例如通过快速傅里叶变换将振动信号（例如）变换到频域，并且分析包含在所得到的频谱中的振幅峰以识别候选峰。 如果仅识别一个候选峰，则使用候选峰出现的频率来确定电机运行速度。 如果识别出两个或多个候选峰，并且电动机是双极电动机，则使用具有最大振幅的候选峰来确定运行速度。 如果识别出两个或多个候选峰，并且电动机具有两个以上的极点，则通过产生通量光谱来进行第二次分析。 将通量光谱内各种频率的峰值与候选峰值进行比较，并根据比较对每个候选峰值进行评分。 将分数与预定分数阈值进行比较，以确定将使用哪个候选峰来确定电机运行速度。 优选地，每个候选峰值也经受测试以确定候选峰值是否准确地表示发生真实峰值的频率。
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公开(公告)号：US6054920A
公开(公告)日：2000-04-25
申请号：US730709
申请日：1996-10-15
申请人： David M. Smith , Rob Hendrickson
发明人： David M. Smith , Rob Hendrickson
摘要： A wireless sensor receiver module for an alarm and/or event reporting system having the capability of monitoring the operational integrity of associated wireless receiver circuitry relative to RF sensor transmissions. A receiver module supervisory timer is reset with the receipt of each sensor transmission, whether an event or supervisory transmission. If sensor transmissions are not received within a supervised receiver time period determined as a function of the number of system sensors, the receiver module communicates a receiver failure condition to the system controller. Noise monitoring circuitry separately monitors the transmissions to enhance the confidence in a receiver failure determination or adjust the period of the receiver module supervisory timer.
摘要翻译： 一种用于报警和/或事件报告系统的无线传感器接收器模块，其具有监测相关无线接收器电路相对于RF传感器传输的操作完整性的能力。 无论是事件还是监控传输，接收机模块监控定时器都会随着每个传感器传输的接收而复位。 如果在作为系统传感器数量的函数确定的受监督接收机时间段内没有接收到传感器传输，则接收机模块将接收机故障状况传送给系统控制器。 噪声监测电路分别监控传输，以增强接收机故障确定的置信度或调整接收机模块监控定时器的周期。
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53.再颁专利Stabilized pressure-hydrated magnesium hydroxide slurry from burnt magnesite and process for its production 失效从烧焦菱镁矿稳定的压力 - 水合氢氧化镁浆料及其生产工艺
公开(公告)号：USRE36369E
公开(公告)日：1999-11-02
申请号：US754178
申请日：1996-11-19
CPC分类号： C01F5/16 , C01P2006/22
摘要： A stabilized, pressure-hydrated magnesium hydroxide slurry and a process for its production from burnt magnesite are described. According to an embodiment of the invention, a mixture comprising burnt natural magnesite and water is pressure hydrated to provide a pressure hydrated slurry. The pressure hydrated slurry is then deagglomerated. If desired, chloride ions and cationic polymer can be added to further stabilize the slurry.
摘要翻译： 描述了稳定的，压力水合的氢氧化镁浆料及其由烧焦菱镁矿生产的方法。 根据本发明的一个实施方案，包含燃烧的天然菱镁矿和水的混合物被压力水合以提供压力水合浆料。 然后将压力水合浆料解聚。 如果需要，可以加入氯离子和阳离子聚合物以进一步稳定浆料。
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公开(公告)号：US5229852A
公开(公告)日：1993-07-20
申请号：US550274
申请日：1990-07-09
申请人： Michael Maietta , David M. Smith
发明人： Michael Maietta , David M. Smith
IPC分类号： H04N5/66 , G09G1/16 , G09G5/00 , G09G5/14 , G09G5/391 , G09G5/393 , H04N9/64 , H04N9/74 , H04N11/20
CPC分类号： H04N9/642 , G09G5/14 , G09G5/391 , G09G5/393 , G09G2340/125
摘要： A general purpose scan converter for converting video signals from one scan rate to another scan rate. The scan converter accepts NTSC, PAL, EGA, VGA, or other inputs in standard video formats and convert them to be displayed on a monitor Several modes of operation including continuous frame grabbing, grab and hold image, and dynamic scaling are provided. In addition, window sizing and window location options are under user control. The input sources for video may be selected, and a robust voltage controlled oscillator is provided for timing. The converter device operates continuously in real time and provides a high resolution output signal to a monitor. Special effects such as clipping of overlapping windows, superimposing graphics or text, and animation are supported.
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公开(公告)号：US5192337A
公开(公告)日：1993-03-09
申请号：US727776
申请日：1991-07-10
申请人： Mark T. Wajer , David M. Smith , Vernon D. Miles
发明人： Mark T. Wajer , David M. Smith , Vernon D. Miles
IPC分类号： C10L10/02
CPC分类号： C10L10/02
摘要： Compositions and methods are provided for controlling dust production from coal, for controlling dust losses from coal, for reducing decrepitation, and for facilitating cold-weather handling of coal. The compositions comprise blending oil and petroleum resin where the blending oil can comprise reclaimed motor oil, light or heavy oil obtained from the refining of petroleum crude, virgin or reprocessed vegetable or animal oils, or oils of mineral origin, and where the petroleum resin comprises resin obtained from the deresination of cylinder stocks or cylinder stock itself, or a combination thereof. The petroleum resin may also contain optional ingredients such as diesels and/or bright stock for motor oils to reduce viscosity.
摘要翻译： 提供了组合和方法，用于控制煤的粉尘产生，用于控制煤的灰尘损失，减少爆裂，促进煤的冷天气处理。 组合物包括混合油和石油树脂，其中混合油可以包括回收的机油，从石油原油，未处理的或再加工的植物或动物油的精炼或矿物来源的油获得的轻质或重质油，并且其中石油树脂包含 从汽缸原料或汽缸原料本身脱离得到的树脂，或其组合。 石油树脂还可以含有任选成分，例如用于机油的柴油机和/或光亮油，以降低粘度。
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56.发明授权Method and apparatus for producing one-side electroplated steel strip with enhanced phosphatability 失效用于生产具有增强的磷酸盐性的单面电镀钢带的方法和装置
公开(公告)号：US4808278A
公开(公告)日：1989-02-28
申请号：US144216
申请日：1988-01-15
CPC分类号： C25D7/0614
摘要： Producing one-side zinc electroplated strip having enhanced phosphating characteristics. Prior to electroplating, the non-electroplated side of the steel strip is cathodically pickled. Cathodic pickling minimizes staining and etching to the non-electroplated strip surface by the zinc electrolyte during electroplating of the opposite strip surface.
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57.发明授权
公开(公告)号：US4646262A
公开(公告)日：1987-02-24
申请号：US821742
申请日：1986-01-23
申请人： David M. Smith
发明人： David M. Smith
CPC分类号： G09G5/393
摘要： A method and apparatus for writing a vector of data into a random access memory at high speed wherein the random access memory (RAM) is partitioned into blocks of addressable storage sites and wherein storage sites within each block are individually accessible. A vector generator provides addressing and storage site enabling signals to the RAM. Boundary detectors monitor the addressing and storage site selection signals to determine whenever storage sites within a new block of storage sites are sought to be addressed. When a boundary transition is detected, a control signal is provided to the vector generator which slows the operation of the vector generator for a period of time sufficient to permit the RAM to accept a new address. For all other addresses, the vector generator is permitted to operate at a higher speed wherein access to the RAM is made by way of enabling specific storage sites within the block of storage sites being written into.
摘要翻译： 一种用于将数据向量高速写入随机存取存储器的方法和装置，其中随机存取存储器（RAM）被划分为可寻址存储位置的块，并且其中每个块内的存储位置是可单独访问的。 向量生成器向RAM提供寻址和存储站点使能信号。 边界检测器监视寻址和存储站点选择信号，以确定寻找新的存储站点内的存储位置。 当检测到边界转变时，向矢量发生器提供控制信号，该矢量发生器使矢量发生器的操作减慢足以允许RAM接受新地址的时间段。 对于所有其他地址，允许向量生成器以更高的速度操作，其中通过使存储位置块内的特定存储位置被写入来进行对RAM的访问。
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公开(公告)号：US3959955A
公开(公告)日：1976-06-01
申请号：US571490
申请日：1975-04-24
IPC分类号： A01D34/00 , A01D34/84 , A01D35/262
CPC分类号： A01D34/003 , A01D34/84 , A01D2101/00
摘要： A self cleaning rotary lawn mower blade and deck assembly in which the lawn mower blade is provided with metal pins symmetrically mounted on opposite sides of the opening for the center shaft, the tops of the pins being spaced from the deck by a critical distance of one-fourth of an inch + or - 1/32 of an inch and being spaced from each other on from 2 to 4 inch centers, so that a 5 inch blade need only have four pins total, half on one side and half on the other side. The mounting of the pin is such that the pin shank whips through an angle of about 30.degree., e.g., about 15.degree. each side of the normal vertical position and this whipping action which takes place during rotation of the blade removes debris, clippings, and the like which tend to adhere to the underside of the deck.
摘要翻译： 自清洁旋转割草机叶片和甲板组件，其中割草机叶片设置有对称安装在用于中心轴的开口的相对侧上的金属销，销的顶部与甲板间隔一个临界距离 - 英寸+或 - 1/32英寸的四分之一，并且在2至4英寸中心处彼此间隔开，使得5英寸的叶片仅需要四个针，一个一个，一个在另一个上 侧。 销钉的安装使得销柄在正常垂直位置的每一侧倾斜大约30°，例如大约15°的角度，并且在叶片旋转期间发生的这种搅动动作去除了碎片，夹子和 倾向于粘附到甲板的下侧的类似物。
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公开(公告)号：US09247926B2
公开(公告)日：2016-02-02
申请号：US13272105
申请日：2011-10-12
CPC分类号： A61B8/4494 , A61B8/14 , A61B8/145 , A61B8/4444 , A61B8/4483 , A61B8/461 , A61B8/467 , A61B8/5207 , A61B8/523 , A61B8/58 , B06B1/0622 , G01S7/5205 , G01S7/52084 , G01S15/8913 , G01S15/892 , G01S15/8927 , G01S15/8929 , G01S15/8934
摘要： A Multiple Aperture Ultrasound Imaging (MAUI) probe or transducer is uniquely capable of simultaneous imaging of a region of interest from separate apertures of ultrasound arrays. Some embodiments provide systems and methods for designing, building and using ultrasound probes having continuous arrays of ultrasound transducers which may have a substantially continuous concave curved shape in two or three dimensions (i.e. concave relative to an object to be imaged). Other embodiments herein provide systems and methods for designing, building and using ultrasound imaging probes having other unique configurations, such as adjustable probes and probes with variable configurations.
摘要翻译： 多孔超声成像（MAUI）探针或换能器独特地能够从超声阵列的单独孔径同时成像感兴趣的区域。 一些实施例提供了用于设计，构建和使用具有连续的超声换能器阵列的超声波探头的系统和方法，所述超声波探头可具有两维或三维的基本上连续的凹形弯曲形状（即，相对于要成像的物体是凹的）。 本文的其它实施例提供了用于设计，构建和使用具有其他独特配置的超声成像探针的系统和方法，例如具有可变构型的可调探针和探针。
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公开(公告)号：US08473239B2
公开(公告)日：2013-06-25
申请号：US12760327
申请日：2010-04-14
IPC分类号： G01N29/00
CPC分类号： A61B8/42 , A61B8/00 , A61B8/0883 , A61B8/4218 , A61B8/4444 , A61B8/4477 , A61B8/587 , G01S7/5205 , G01S15/8913 , Y10T29/49778
摘要： Increasing the effective aperture of an ultrasound imaging probe by including more than one probe head and using the elements of all of the probes to render an image can greatly improve the lateral resolution of the generated image. In order to render an image, the relative positions of all of the elements must be known precisely. A calibration fixture is described in which the probe assembly to be calibrated is placed above a test block and transmits ultrasonic pulses through the test block to an ultrasonic sensor. As the ultrasonic pulses are transmitted though some or all of the elements in the probe to be tested, the differential transit times of arrival of the waveform are measured precisely. From these measurements the relative positions of the probe elements can be computed and the probe can be aligned.
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