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459 条记录 (耗时 0.03 秒)

    Fluid monitoring
    41.
    发明授权
    Fluid monitoring 失效

    公开(公告)号：US07114373B2

    公开(公告)日：2006-10-03

    申请号：US11197780

    申请日：2005-08-04

    申请人： Roger John Hazelden ,  Kimberley Patrick Fraser Smith

    发明人： Roger John Hazelden ,  Kimberley Patrick Fraser Smith

    IPC分类号： G01N11/00

    CPC分类号： G01N29/348 ,  G01N11/16 ,  G01N29/036 ,  G01N29/2462 ,  G01N29/42 ,  G01N2291/0258 ,  G01N2291/02818 ,  G01N2291/0422 ,  G01N2291/0427

    摘要： An apparatus for measuring the viscosity and temperature of a fluid, for example an engine oil, comprises a transducer, which is arranged to vibrate when provided with a drive signal to produce an ultrasonic shear wave; an impedance matching layer that is inserted into the fluid and which couples at least a portion of the ultrasonic waves produced by the transducer into the fluid and from which at least a portion of the wave is reflected back to the transducer; a detector which is adapted to detect a measurement signal produced by the transducer when the reflected wave is incident upon the transducer; a control circuit which varies the frequency of the drive signal applied to the transducer and hence the frequency of the ultrasound signal; a processing means which determines the optimum frequency of the drive signal at which the measurement signal output from the transducer has its minimum amplitude; and a temperature determining means which estimates the temperature of the fluid as a function of the optimum frequency.

    Signal processing arrangement
    42.
    发明申请
    Signal processing arrangement 审中-公开
    信号处理安排

    公开(公告)号：US20060203086A1

    公开(公告)日：2006-09-14

    申请号：US11367722

    申请日：2006-03-03

    申请人： Brian Pavlakovic

    发明人： Brian Pavlakovic

    IPC分类号： H04N7/18

    CPC分类号： G01N29/44 ,  G01N29/041 ,  G01N29/11 ,  G01N29/348 ,  G01N29/42 ,  G01N2291/0258 ,  G01N2291/0423 ,  G01N2291/0427 ,  G01N2291/106 ,  G01N2291/2634

    摘要： Apparatus for inspecting a pipe using guided ultrasonic waves includes a signal processing apparatus. The signal processing apparatus is configured to produce a response as if the pipe had been excited by a single wideband excitation wave, but which in fact had been excited by two overlapping narrowband excitation waves.

    摘要翻译： 使用引导超声波检查管道的装置包括信号处理装置。 信号处理装置被配置为产生一个响应，好像管道已被单个宽带激发波激发，但实际上已被两个重叠的窄带激发波激发。

    Transducer-based sensor system with multiple drive signal variants
    44.
    发明申请
    Transducer-based sensor system with multiple drive signal variants 失效
    基于传感器的传感器系统，具有多个驱动信号变量

    公开(公告)号：US20050258716A1

    公开(公告)日：2005-11-24

    申请号：US10286071

    申请日：2002-10-31

    申请人： Daniel Blakley

    发明人： Daniel Blakley

    IPC分类号： G01G3/16 ,  G01N29/00 ,  G01N29/26 ,  G01N29/34 ,  G01N29/36 ,  G01N29/42 ,  H01L41/113

    CPC分类号： G01N29/32 ,  G01N29/262 ,  G01N29/34 ,  G01N29/341 ,  G01N29/36 ,  G01N29/42 ,  G01N2291/106

    摘要： A sensor system including a plurality of transducer groups, with each transducer group having a plurality of transducers. The transducers of each group are adapted to be placed in operative proximity with a sample material. Within each transducer group, each transducer is actuable via application of a different phase-shifted variant of a local oscillator signal to the transducer. The sensor system is also configured so that, for each transducer group, the phase-shifted variants of the local oscillator signal are selectively employed during output processing to inhibit cross-transducer interference occurring between simultaneously active transducers.

    摘要翻译： 一种包括多个换能器组的传感器系统，每个换能器组具有多个换能器。 每组的换能器适于放置在与样品材料操作接近的位置。 在每个换能器组内，通过将本地振荡器信号的不同相移变体应用于换能器，每个换能器可以被致动。 传感器系统还被配置为使得对于每个换能器组，在输出处理期间选择性地采用本地振荡器信号的相移变型，以抑制在同时有效的换能器之间发生的交叉换能器干涉。

    Method of identifying and detecting the concentrations of multiple species by means of a spectrophone
    45.
    发明申请
    Method of identifying and detecting the concentrations of multiple species by means of a spectrophone 审中-公开
    通过分光光度法识别和检测多种物种的浓度的方法

    公开(公告)号：US20050210956A1

    公开(公告)日：2005-09-29

    申请号：US11086280

    申请日：2005-03-23

    申请人： Robert Anthony Crane

    发明人： Robert Anthony Crane

    IPC分类号： G01J3/02 ,  G01N21/00 ,  G01N29/02 ,  G01N29/036 ,  G01N29/22 ,  G01N29/34 ,  G01N29/42

    CPC分类号： G01N29/42 ,  G01N29/036 ,  G01N29/222 ,  G01N29/348 ,  G01N2291/0215

    摘要： A method of identifying and determining the concentrations of multiple species in a gas sample, includes providing a spectrophone assembly having a detector chamber, supplying the gas sample to the detector chamber and simultaneously passing a plurality of radiations of different wavelengths into the detector chamber to produce multiple acoustic resonances of different frequencies. Acoustic resonances in the detector chamber are simultaneously sensed to produce corresponding electrical signals, and the electrical signals are analysed to identify the species present in the gas sample and determine the concentration of each specie.

    摘要翻译： 识别和确定气体样品中多种物质的浓度的方法包括提供具有检测器室的分光镜组件，将气体样品供应到检测器室并同时将多个不同波长的辐射传递到检测器室中以产生 不同频率的多声共振。 同时检测检测器室中的声共振以产生相应的电信号，并分析电信号以识别气体样品中存在的物质并确定每种物质的浓度。

    Detection of movement of termites in wood by acoustic emission techniques
    47.
    发明授权
    Detection of movement of termites in wood by acoustic emission techniques 失效
    通过声发射技术检测木材中白蚁的运动

    公开(公告)号：US06883375B2

    公开(公告)日：2005-04-26

    申请号：US10716077

    申请日：2003-11-18

    申请人： Harold L. Dunegan

    发明人： Harold L. Dunegan

    IPC分类号： G01H1/00 ,  G01N29/14 ,  G01N29/24 ,  G01N29/42 ,  G01N29/04

    CPC分类号： G01N29/14 ,  G01H1/00 ,  G01N29/2437 ,  G01N29/2462 ,  G01N29/42 ,  G01N2291/0422 ,  G01N2291/106

    摘要： Acoustic emission apparatus methods for detecting termite infestation including a probe and signal processing circuitry. The probe includes an piezoelectric transducer and is adapted to be inserted into a bore-hole of the wood under test. The waveguide intersects the high frequency extensional and shear waves produced by feeding and movement of termite propagating along the grain of the wood.The transducer output signal is filtered through high (HF) and low (LF) bandbase filters. Selected HF/LF values produce a signal which substantially eliminates extraneous Out-Of-Plane acoustic noise. One embodiment includes a multiple channel multiplexing system for monitoring insect treatment processes in structures such as homes and other buildings. The real time data is used to determine the effectiveness of treatments as well as the time required to produce an effective treatment for termite eradication.

    摘要翻译： 用于检测白蚁侵袭的声发射装置方法，包括探针和信号处理电路。 探头包括压电换能器，并适于插入被测木材的钻孔中。 波导与通过沿木材颗粒传播的白蚁进食和运动产生的高频拉伸和剪切波相交。 传感器输出信号通过高（HF）和低（LF）滤波器滤波。 所选择的HF / LF值产生基本上消除了外部超平面声学噪声的信号。 一个实施例包括用于在诸如家庭和其他建筑物的结构中监视昆虫处理过程的多路复用系统。 实时数据用于确定治疗的有效性以及产生有效治疗白蚁根除所需的时间。

    Micro acoustic spectrum analyzer
    48.
    发明授权
    Micro acoustic spectrum analyzer 失效
    微声谱分析仪

    公开(公告)号：US06822929B1

    公开(公告)日：2004-11-23

    申请号：US10606526

    申请日：2003-06-25

    申请人： W. Kent Schubert ,  Michael A. Butler ,  Douglas R. Adkins ,  Larry F. Anderson

    发明人： W. Kent Schubert ,  Michael A. Butler ,  Douglas R. Adkins ,  Larry F. Anderson

    IPC分类号： G01N3300

    CPC分类号： B06B1/0292 ,  G01H3/00 ,  G01H3/08 ,  G01H3/12 ,  G01N29/14 ,  G01N29/42 ,  G01N29/46 ,  H04R1/44 ,  H04R29/00

    摘要： A micro acoustic spectrum analyzer for determining the frequency components of a fluctuating sound signal comprises a microphone to pick up the fluctuating sound signal and produce an alternating current electrical signal; at least one microfabricated resonator, each resonator having a different resonant frequency, that vibrate in response to the alternating current electrical signal; and at least one detector to detect the vibration of the microfabricated resonators. The micro acoustic spectrum analyzer can further comprise a mixer to mix a reference signal with the alternating current electrical signal from the microphone to shift the frequency spectrum to a frequency range that is a better matched to the resonant frequencies of the microfabricated resonators. The micro acoustic spectrum analyzer can be designed specifically for portability, size, cost, accuracy, speed, power requirements, and use in a harsh environment. The micro acoustic spectrum analyzer is particularly suited for applications where size, accessibility, and power requirements are limited, such as the monitoring of industrial equipment and processes, detection of security intrusions, or evaluation of military threats.

    摘要翻译： 用于确定波动声音信号的频率分量的微声频谱分析仪包括麦克风拾取波动的声音信号并产生交流电信号; 至少一个微制造谐振器，每个谐振器具有不同的谐振频率，其响应于交流电信号而振动; 以及至少一个检测器，用于检测微加工的谐振器的振动。 微声频谱分析仪还可以包括混合器以将参考信号与来自麦克风的交流电信号混合，以将频谱移动到与微细谐振器的谐振频率更好匹配的频率范围。 微声谱分析仪可以专门设计用于便携性，尺寸，成本，精度，速度，功率要求和在恶劣环境中的使用。 微声谱分析仪特别适用于尺寸，可达性和功率要求有限的应用，例如监测工业设备和工艺，检测安全入侵或评估军事威胁。

    Detection of movement to termites in wood by acoustic emission techniques
    49.
    发明申请
    Detection of movement to termites in wood by acoustic emission techniques 失效
    通过声发射技术检测木材中白蚁的运动

    公开(公告)号：US20040107773A1

    公开(公告)日：2004-06-10

    申请号：US10716077

    申请日：2003-11-18

    发明人： Harold L. Dunegan

    IPC分类号： G01N029/14 ,  G01H011/08

    CPC分类号： G01N29/14 ,  G01H1/00 ,  G01N29/2437 ,  G01N29/2462 ,  G01N29/42 ,  G01N2291/0422 ,  G01N2291/106

    摘要： Acoustic emission apparatus methods for detecting termite infestation including a probe and signal processing circuitry. The probe includes an piezoelectric transducer and is adapted to be inserted into a bore-hole of the wood under test. The waveguide intersects the high frequency extensional and shear waves produced by feeding and movement of termite propagating along the grain of the wood. The transducer output signal is filtered through high (HF) and low (LF) bandbase filters. Selected HF/LF values produce a signal which substantially eliminates extraneous Out-Of-Plane acoustic noise. One embodiment includes a multiple channel multiplexing system for monitoring insect treatment processes in structures such as homes and other buildings. The real time data is used to determine the effectiveness of treatments as well as the time required to produce an effective treatment for termite eradication.

    摘要翻译： 用于检测白蚁侵袭的声发射装置方法，包括探针和信号处理电路。 探头包括压电换能器，并适于插入被测木材的钻孔中。 波导与通过沿木材颗粒传播的白蚁进食和运动产生的高频拉伸和剪切波相交。 传感器输出信号通过高（HF）和低（LF）滤波器滤波。 所选择的HF / LF值产生基本上消除了外部超平面声学噪声的信号。 一个实施例包括用于在诸如家庭和其他建筑物的结构中监视昆虫处理过程的多路复用系统。 实时数据用于确定治疗的有效性以及产生有效治疗白蚁根除所需的时间。