Micromachined ultrasonic transducer cells having compliant support structure
    1.
    发明授权
    Micromachined ultrasonic transducer cells having compliant support structure 有权
    具有顺应性支撑结构的微加工超声换能器单元

    公开(公告)号:US07408283B2

    公开(公告)日:2008-08-05

    申请号:US11348984

    申请日:2006-02-07

    IPC分类号: H04R17/00 H02N1/00

    CPC分类号: B06B1/0292 H02N1/006

    摘要: A micromachined ultrasonic transducer array comprising a multiplicity of cMUT cells built on a substrate. Each cMUT cell comprises a compliant support structure built on the substrate, a membrane supported over a cavity by the compliant support structure, a first electrode supported by the membrane, and a second electrode that forms a capacitor with the first electrode, the cavity being disposed between the first and second electrodes. The compliant support structure uncouples the non-membrane outer surface of each cMUT cell from the supporting substrate.

    摘要翻译: 一种微机械加工的超声波换能器阵列,其包括建立在基底上的多个cMUT电池。 每个cMUT单元包括构建在基板上的柔性支撑结构,由柔性支撑结构支撑在空腔上的膜,由膜支撑的第一电极,以及与第一电极形成电容器的第二电极, 在第一和第二电极之间。 顺应性支撑结构将每个cMUT电池的非膜外表面与支撑衬底断开。

    Micromachined ultrasonic transducer cells having compliant support structure
    2.
    发明授权
    Micromachined ultrasonic transducer cells having compliant support structure 有权
    具有顺应性支撑结构的微加工超声换能器单元

    公开(公告)号:US07030536B2

    公开(公告)日:2006-04-18

    申请号:US10748920

    申请日:2003-12-29

    IPC分类号: H02N1/00

    CPC分类号: B06B1/0292 H02N1/006

    摘要: A micromachined ultrasonic transducer array comprising a multiplicity of cMUT cells built on a substrate. Each cMUT cell comprises a compliant support structure built on the substrate, a membrane supported over a cavity by the compliant support structure, a first electrode supported by the membrane, and a second electrode that forms a capacitor with the first electrode, the cavity being disposed between the first and second electrodes. The compliant support structure uncouples the non-membrane outer surface of each cMUT cell from the supporting substrate.

    摘要翻译: 一种微机械加工的超声波换能器阵列,其包括建立在基底上的多个cMUT电池。 每个cMUT单元包括构建在基板上的柔性支撑结构,由柔性支撑结构支撑在空腔上的膜,由膜支撑的第一电极,以及与第一电极形成电容器的第二电极, 在第一和第二电极之间。 顺应性支撑结构将每个cMUT电池的非膜外表面与支撑衬底断开。

    Detection by automatic gain control features of gradual cutting tool
breakage
    3.
    发明授权
    Detection by automatic gain control features of gradual cutting tool breakage 失效
    通过自动增益控制检测功能,逐步切割刀具断裂

    公开(公告)号:US4806914A

    公开(公告)日:1989-02-21

    申请号:US46812

    申请日:1987-05-07

    摘要: A tool break detection system has an automatic gain control to adjust the analog signal channel gain and hold the cutting vibration signal at a desired average level. The AGC time constant is long enough that the detection of abrupt tool breaks and sudden large signal level transistions by the digital signature recognition logic is unaffected. However, the gradual decrease in signal level produced by a crumbly-type break would be removed by AGC action. In a system with a hardware AGC, crossing a high gain threshold resets gain to a low value and the resulting abrupt and persisting change in signal level is detected by the abrupt tool break logic. Another embodiment uses the gain command output by a software AGC and generates a break detected signal directly, without resetting the gain command, as gain rises above a high gain alarm level which is recalculated at the start of each cut.

    摘要翻译: 刀具断裂检测系统具有自动增益控制,以调整模拟信号通道增益并将切割振动信号保持在期望的平均水平。 AGC时间常数足够长,使得数字签名识别逻辑的突然工具断开检测和突发的大信号电平转移不受影响。 然而,通过AGC动作可以消除由脆弱型断路产生的信号电平的逐渐降低。 在具有硬件AGC的系统中,跨越高增益阈值将增益重置为低值,并且突然的工具断开逻辑检测到所产生的信号电平的突然和持续变化。 另一个实施例使用由软件AGC输出的增益指令,并且当增益高于在每次切断开始时重新计算的高增益警报水平时,直接生成中断检测信号而不复位增益命令。

    Four-Way Steerable Catheter System and Method of Use
    5.
    发明申请
    Four-Way Steerable Catheter System and Method of Use 有权
    四通导向导管系统及其使用方法

    公开(公告)号:US20080097403A1

    公开(公告)日:2008-04-24

    申请号:US11677791

    申请日:2007-02-22

    IPC分类号: A61M25/01

    摘要: Certain embodiments provide systems and methods for catheter positioning. Certain embodiments provide a catheter for use in at least intravenous and intracardiac spaces. The catheter includes a catheter body having a length and a tip portion at a distal end of the catheter body. The catheter also includes a plurality of wires for moving the catheter body in a plurality of directions. The catheter further includes a first control for manipulating the plurality of wires in two primary planes of movement for the catheter body. The catheter includes a second control for manipulating the plurality of wires in two secondary planes of movement for the catheter body. The second control is distinct in appearance and operation from the first control.

    摘要翻译: 某些实施例提供用于导管定位的系统和方法。 某些实施例提供用于至少静脉内和心内空间的导管。 该导管包括导管主体,该导管主体具有在导管主体的远端处的长度和尖端部分。 导管还包括用于在多个方向上移动导管主体的多根线。 导管还包括用于在用于导管主体的两个主运动平面中操纵多个电线的第一控制器。 导管包括用于在用于导管主体的两个运动的次级平面中操纵多个电线的第二控制。 第二个控件的外观和操作与第一个控件不同。

    Method of manufacturing ultrasound transducer device having acoustic backing
    6.
    发明授权
    Method of manufacturing ultrasound transducer device having acoustic backing 有权
    制造具有声学背衬的超声波换能器装置的方法

    公开(公告)号:US07441321B2

    公开(公告)日:2008-10-28

    申请号:US10960871

    申请日:2004-10-06

    IPC分类号: H04R31/00

    摘要: An ultrasonic transducer device comprising: an ultrasonic transducer array micromachined on a substrate; flexible electrical connections connected to the transducer array; and a body of acoustically attenuative material that supports the substrate and the flexible electrical connections. The acoustic backing material may contain additional features, such as tabs or notches, for use in positioning the transducer on fixtures during manufacturing or positioning the transducer within a housing during final assembly. Tabs or other features that are used only during manufacturing may be subsequently removed from the device. The MUT device itself may also be thinned so as to provide flexibility as desired. The backing material is preferably matched in acoustic impedance to the silicon wafer so as to prevent reflection at the interface of any acoustic energy propagating rearward, i.e., in the direction away from the device front surface. The backing material may also possess a high thermal conductivity to assist in removal of heat from the device.

    摘要翻译: 一种超声波换能器装置,包括:微机械加工在基底上的超声换能器阵列; 连接到换能器阵列的柔性电连接; 以及支撑衬底和柔性电连接的声衰减材料体。 声学衬垫材料可以包含附加特征,例如突片或凹口,用于在最终组装期间制造或将换能器定位在壳体内时将换能器定位在固定装置上。 仅在制造期间使用的标签或其它特征可随后从装置中移除。 MUT设备本身也可以被减薄,以便根据需要提供灵活性。 背衬材料优选地与硅晶片的声阻抗匹配,以便防止在向后传播的任何声能的界面处的反射,即远离器件前表面的方向上的反射。 背衬材料还可以具有高热导率以帮助从装置移除热量。

    Multi-level tool break detection using multi-mode sensing
    9.
    发明授权
    Multi-level tool break detection using multi-mode sensing 失效
    使用多模式感测的多级工具断点检测

    公开(公告)号:US4918427A

    公开(公告)日:1990-04-17

    申请号:US329044

    申请日:1989-03-27

    IPC分类号: B23Q17/09 G08B21/20

    摘要: A system and method for monitoring machine tool operations provides a multi-level tool break alarm and uses information from multiple sensors of different types. Signal processing and pattern recognition logic techniques are applied to a cutting process high frequency vibration signal to detect major tool breaks requiring prompt stoppage of the cut. False alarm resistant detection of minor tool breaks, for which the response may not be an immediate stop of the cutting process, is obtained with information from a low frequency vibration sensor, an axis drive current sensor, or an axis velocity sensor. A minor tool break alarm is generated when signal transients in both a high frequency and low frequency channel signal are in close time coincidence, and a major alarm when the high frequency channel transient is followed by a persisting mean vibration level shift.

    摘要翻译: 用于监控机床操作的系统和方法提供了多级工具中断报警,并且使用来自不同类型的多个传感器的信息。 信号处理和模式识别逻辑技术应用于切割过程高频振动信号,以检测需要及时停止切割的主要刀具断裂。 通过来自低频振动传感器,轴驱动电流传感器或轴速度传感器的信息,可以获得针对可能不立即停止切割过程的小型刀具断裂的防误报警检测。 在高频和低频信号信号中的信号瞬变处于紧密的时间一致时,产生小的工具中断报警,当高频信道瞬态随后是持续的平均振动电平偏移时,产生主要报警。

    Cutting tool wear detection apparatus and method
    10.
    发明授权
    Cutting tool wear detection apparatus and method 失效
    刀具磨损检测装置及方法

    公开(公告)号:US4831365A

    公开(公告)日:1989-05-16

    申请号:US153300

    申请日:1988-02-05

    IPC分类号: G05B19/4065

    摘要: Sharp tools have different cutting characteristics from dull or worn tools. Among these differences is that a wear land develops on the cutting tool so that more of the cutting tool comes into contact with the workpiece during the cutting process. The increased contact area between the tool and workpiece forces more energy to be consumed by the cutting machine in making a cut because more energy is expended in non-productive work. Indications of an increase in non-productive work are the increased power or force necessary to operate a spindle in lathes, milling machines, etc., and the increased energy in cutting vibrations in a low frequency range emitted during the cutting process. Another indication of decreased efficiency of the cutting process is the decreased energy in cutting vibrations in a high frequency range emitted during the cutting process. A method and apparatus are described for continuously monitoring a ratio of spindle force or power or low frequency vibration energy to high frequency vibration energy during the cutting process, and generating an output warning signal when the radio reaches a preselected level correlated with excessive tool wear.

    摘要翻译: 锋利的工具具有不同的切割特性,从钝或磨损的工具。 这些差异在于,在切割工具上形成磨损区域,使得更多的切削工具在切割过程中与工件接触。 刀具和工件之间的增加的接触面积在切割机中产生更多的能量消耗,因为在非生产性工作中消耗更多的能量。 增加非生产性工作的迹象是在车床,铣床等中操作主轴所需的力量或力量的增加,以及在切割过程中发射的低频范围内切割振动的能量增加。 切割过程效率降低的另一个指示是在切割过程中发射的高频范围内的切割振动中的能量减少。 描述了一种用于在切割过程中连续监测主轴力或功率或低频振动能量与高频振动能量的比率的方法和装置,并且当无线电达到与过度的工具磨损相关的预选级别时,产生输出警告信号。