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公开(公告)号：US4351031A
公开(公告)日：1982-09-21
申请号：US204946
申请日：1980-11-07
CPC分类号： G01N27/9053 , G01N27/9046
摘要： An eddy current type of nondestructive testing instrument is disclosed in which the operating frequency is automatically adjusted in accordance with a comparison of output signals obtained in scanning operations in which the frequency is adjusted over its range. The system may be used, for example, in providing lift-off compensation for conductivity measurements or flaw detection or it may be used for sorting of parts of different characteristics.
摘要翻译： 公开了一种涡流型无损检测仪器，其中根据在其范围内调整频率的扫描操作中获得的输出信号的比较来自动调整工作频率。 该系统可用于例如提供用于电导率测量或探伤的剥离补偿，或者可用于对不同特征的部件进行分选。
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2.发明授权Non-destructive testing systems having automatic balance and sample and hold operational modes 失效具有自动平衡和采样和保持操作模式的非破坏性测试系统
公开(公告)号：US4006407A
公开(公告)日：1977-02-01
申请号：US556898
申请日：1975-03-10
申请人： John J. Flaherty , Eric J. Strauts
发明人： John J. Flaherty , Eric J. Strauts
摘要： Automatic balancing circuits are provided for non-destructive testing systems such as eddy current systems in which an unbalance of a probe circuit including a test coil produces undesired deviations from a null indication. Error signal components are generated from a probe circuit output signal, stored in storage means and then applied in a balancing direction to cancel the effect of the unbalance of the probe circuit. Preferably, the error signal components are generated by a pair of quadrature phase detectors and the storage means comprises either a capacitor or the combination of digital storage and digital-analog converter means. The balancing is performed either automatically, with a delay in the storage operation, or by operation of a switch means between a sample or null condition in which the error signals are stored and a hold condition in which the stored error signals are applied. In one embodiment, the stored error signals are used to modulate AC signal components in quadrature phase relation which are applied in a balancing direction. In another, the stored error signals are developed from phase detector output signals and then combined therewith. In both embodiments, balancing signals are combined with signals derived from the probe circuit output signal and applied at points preceding high gain amplification in signal processing circuitry.
摘要翻译： 为非破坏性测试系统（例如涡流系统）提供自动平衡电路，其中包括测试线圈的探头电路的不平衡产生与空指示的不期望的偏差。 误差信号分量由探头电路输出信号产生，存储在存储装置中，然后以平衡方向施加，以消除探针电路不平衡的影响。 优选地，误差信号分量由一对正交相位检测器产生，并且存储装置包括电容器或数字存储器和数模转换器装置的组合。 平衡可以自动执行，存储操作延迟，或者通过操作存储错误信号的采样或空条件之间的开关装置以及应用存储的误差信号的保持条件来执行。 在一个实施例中，所存储的误差信号用于调制在平衡方向上应用的正交相位关系中的交流信号分量。 另一方面，存储的误差信号从相位检测器输出信号产生，然后与其组合。 在两个实施例中，平衡信号与从探测电路输出信号导出的信号组合，并在信号处理电路中的高增益放大之前的点应用。
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公开(公告)号：US4193306A
公开(公告)日：1980-03-18
申请号：US952844
申请日：1978-10-19
申请人： John J. Flaherty , Eric J. Strauts
发明人： John J. Flaherty , Eric J. Strauts
CPC分类号： G01S15/50 , G01N29/0609
摘要： An ultrasonic system for detection of defects is provided including a pulse-echo instrument having a cathode ray tube on which an A-scan visual indication of flaws is produced and including a doppler circuit arranged to produce a doppler signal in an audible range in response to movement of a transducer relative to defects in a pipe seam or other region being investigated. The doppler signal is applied to earphones, permitting the existence of defects to be reliably determined audibly, after which the defects may be more carefully studied through the visual indications on the cathode ray tube. The doppler signal is also recorded on one track of a magnetic tape with operator's comments being recorded on a second track of the same tape. The doppler circuit includes an oscillator operated during a gating time interval to generate a reference signal, a phase detector responsive to a reference signal and to echo ignals, and a sample and hold circuit for storing the output of the phase detector from one cycle to the next.
摘要翻译： 提供了一种用于检测缺陷的超声波系统，包括具有阴极射线管的脉冲回波仪器，在该脉冲回波仪器上产生瑕疵的A扫描视觉指示，并且包括多普勒电路，该多普勒电路被布置为响应于可听见的范围产生多普勒信号 传感器相对于正在研究的管缝或其他区域中的缺陷的运动。 多普勒信号被应用于耳机，允许可听见地确定缺陷的存在，之后可以通过阴极射线管上的视觉指示更仔细地研究缺陷。 多普勒信号也被记录在磁带的一个轨道上，操作者的意见被记录在同一磁带的第二轨道上。 多普勒电路包括在门控时间间隔期间操作以产生参考信号的振荡器，响应于参考信号和回波点的相位检测器，以及采样和保持电路，用于将相位检测器的输出从一个周期存储到 下一个。
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公开(公告)号：US4378700A
公开(公告)日：1983-04-05
申请号：US204950
申请日：1980-11-07
申请人： John J. Flaherty , Eric J. Strauts
发明人： John J. Flaherty , Eric J. Strauts
CPC分类号： G01N27/9046
摘要： An indicating system is disclosed for use with nondestructive testing systems of various types including an eddy current instrument in which the characteristics of a specimen structure are indicated by the form, position and dimensions of a trace on a screen. The system indicates whether or not the relationship of two test signals is within certain limits which can be shown in the form of outlines or a series of contiguous boxes on a screen. Prior to the testing of a structure of unknown characteristics, such limits may be learned or recorded by the system either during the manual manipulation of a joystick control or the like or during the testing of a structure of known or standard characteristics.
摘要翻译： 公开了一种用于各种类型的非破坏性测试系统的指示系统，包括涡流仪器，其中样本结构的特征由屏幕上的迹线的形式，位置和尺寸指示。 该系统指示两个测试信号的关系是否在一定限度内，可以以轮廓的形式或屏幕上的一系列连续的框显示。 在测试未知特征的结构之前，系统可以在手动操纵操纵杆控制等期间或者在测试已知或标准特征的结构期间学习或记录这样的限制。
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公开(公告)号：US4123797A
公开(公告)日：1978-10-31
申请号：US773338
申请日：1977-03-01
申请人： Eric J. Strauts , John J. Flaherty
发明人： Eric J. Strauts , John J. Flaherty
摘要： A storage system is provided in which digital numbers are read into a memory by periodically sampling a pair of analog input signals and in which the memory is scanned in timed relation to the signal sampling and also in timed relation to the scanning of a cathode ray tube screen in a raster pattern, the scanning spot being brightened when a stored digital number is detected.A pair of digital-to-analog converters are used both in sampling and for raster scanning. In sampling, the outputs thereof are compared with the input signals to control analog-to-digital logic circuits and the inputs thereof are connected through multiplexers to the output of the analog-to-digital logic circuits which operate as successive approximation registers. In raster scanning, the inputs of the digital-to-analog converters are connected to counter sections driven from a high frequency clock one being operative to develop a sawtooth signal to generate a sweep line and the other being operative at a field or frame rate. The memory is also connected through the multiplexers, alternately to the outputs of the analog-to-digital logic circuits and to the counters to be scanned in synchronism with the scanning of the screen. The multiplexers are so switched that sampling is performed between successive sweep lines.
摘要翻译： 提供了一种存储系统，其中通过周期性地对一对模拟输入信号进行采样而将数字数字读入存储器，并且其中存储器以与信号采样成正比的关系扫描存储器，并且还与阴极射线管的扫描定时关系 以光栅图案进行屏幕显示，当检测到存储的数字数字时，扫描点变亮。
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公开(公告)号：US4117334A
公开(公告)日：1978-09-26
申请号：US786373
申请日：1977-04-11
申请人： Eric J. Strauts
发明人： Eric J. Strauts
摘要： An X-ray unit is provided having a self-contained high voltage supply including a pair of capacitors charged through diodes from a pair of transformer secondary windings and connected in series through the windings to the anode and cathode of an X-ray tube. Switching means are provided for operation either in a first mode in which the alternating voltages across the secondary windings are in phase and in which the output voltage is equal to the sum of the DC voltages across the capacitors to be substantially constant, and a second mode in which the alternating voltages across the secondary windings are out of phase and in which they are added to produce a pulsating output voltage having a peak value which is approximately double that of the substantially constant voltage obtained in the first mode of operation.
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7.发明授权Sensor and method for discriminating coins of varied composition, thickness, and diameter 有权用于区分不同组成，厚度和直径的硬币的传感器和方法公开(公告)号：US06892871B2
公开(公告)日：2005-05-17
申请号：US10095256
申请日：2002-03-11
申请人： Eric J. Strauts , David J. Mecklenburg , Joseph J. Geib , John R. Blake , David J. Wendell , Scott D. Casanova
发明人： Eric J. Strauts , David J. Mecklenburg , Joseph J. Geib , John R. Blake , David J. Wendell , Scott D. Casanova
摘要： A coin discrimination sensor having an excitation coil and two detector coils arranged to detect eddy currents in a passing coin. The excitation coil is provided a composite waveform formed by adding a low frequency signal (30 KHz) with a high frequency signal (480 KHz). The two detector coils are arranged at different distances from the passing coin, and are calibrated to eliminate the common-mode voltage when no coin is present. As a coin passes by the sensor, eddy currents are induced in the coin which result in phase and amplitude shifts in the low and high frequency components of the detector signal. The low and high frequency components are separated from the detector signal, and their respective phases and amplitudes are ascertained and compared against values stored in a lookup table. These values represent the composition, thickness, and diameter characteristics of known coins, and if the signature of the processed coin does not appear in the lookup table, it can be flagged as an invalid coin.
摘要翻译： 具有激励线圈的硬币识别传感器和布置成检测通过硬币中的涡流的两个检测器线圈。 励磁线圈提供了通过将低频信号（30KHz）与高频信号（480KHz）相加形成的复合波形。 两个检测器线圈布置在与通过硬币不同的距离处，并且在没有硬币存在时被校准以消除共模电压。 当硬币通过传感器时，在硬币中引起涡流，导致检测器信号的低频和高频分量中的相位和振幅偏移。 低频和高频分量与检测器信号分离，并且确定它们各自的相位和振幅并将其与存储在查找表中的值进行比较。 这些值表示已知硬币的组成，厚度和直径特征，如果处理的硬币的签名没有出现在查找表中，则可以将其标记为无效硬币。
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8.发明授权Coin processing machine and method for discriminating coins of varied composition, thickness, and diameter 有权用于辨别不同成分，厚度和直径的硬币的硬币处理机和方法公开(公告)号：US06988606B2
公开(公告)日：2006-01-24
申请号：US10954830
申请日：2004-09-30
申请人： Joseph J. Geib , John R. Blake , David J. Wendell , Scott D. Casanova , David J. Mecklenburg , Eric J. Strauts
发明人： Joseph J. Geib , John R. Blake , David J. Wendell , Scott D. Casanova , David J. Mecklenburg , Eric J. Strauts
IPC分类号： G07D5/02
摘要： A coin discrimination sensor having an excitation coil and two detector coils arranged to detect eddy currents in a passing coin. The excitation coil is provided a composite waveform formed by adding a low frequency signal (30 KHz) with a high frequency signal (480 KHz). The two detector coils are arranged at different distances from the passing coin, and are calibrated to eliminate the common-mode voltage when no coin is present. As a coin passes by the sensor, eddy currents are induced in the coin which result in phase and amplitude shifts in the low and high frequency components of the detector signal. The low and high frequency components are separated from the detector signal, and their respective phases and amplitudes are ascertained and compared against values stored in a lookup table. These values represent the composition, thickness, and diameter characteristics of known coins, and if the signature of the processed coin does not appear in the lookup table, it can be flagged as an invalid coin.
摘要翻译： 具有激励线圈的硬币识别传感器和布置成检测通过硬币中的涡流的两个检测器线圈。 励磁线圈提供了通过将低频信号（30KHz）与高频信号（480KHz）相加形成的复合波形。 两个检测器线圈布置在与通过硬币不同的距离处，并且在没有硬币存在时被校准以消除共模电压。 当硬币通过传感器时，在硬币中引起涡流，导致检测器信号的低频和高频分量中的相位和振幅偏移。 低频和高频分量与检测器信号分离，并且确定它们各自的相位和振幅并将其与存储在查找表中的值进行比较。 这些值表示已知硬币的组成，厚度和直径特征，如果处理的硬币的签名没有出现在查找表中，则可以将其标记为无效硬币。
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公开(公告)号：US06755730B2
公开(公告)日：2004-06-29
申请号：US10095164
申请日：2002-03-11
申请人： Joseph J. Geib , John R. Blake , David J. Wendell , Scott D. Casanova , David J. Mecklenburg , Eric J. Strauts
发明人： Joseph J. Geib , John R. Blake , David J. Wendell , Scott D. Casanova , David J. Mecklenburg , Eric J. Strauts
IPC分类号： G07D300
摘要： A coin processing system for processing a plurality of coins of mixed denominations comprises a rotatable disc for imparting motion to the plurality of coins, a sensor for differentiating between valid and invalid coins, a stationary sorting head, a diverter and a controller. The stationary sorting head has a lower surface generally parallel to and spaced slightly away from the rotatable disc. The lower surface forms a queuing channel and a plurality of exit channels for sorting and discharging coins of particular denominations. The queuing channel has a first segment for receiving coins and a second segment for moving the coins past the sensor and is configured to move coins at a faster rate along the second segment for increasing the spacing between adjacent coins. The diverter is disposed along the second segment beyond the sensor and is moveable between a first position for permitting coins to proceed to the plurality of exit channels and a second position for diverting coins to a reject region. The controller moves the diverter from the first position to the second position when the sensor detects an invalid coin.
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10.发明授权公开(公告)号：US07188720B2
公开(公告)日：2007-03-13
申请号：US10835820
申请日：2004-04-30
申请人： Joseph J. Geib , John R. Blake , David J. Wendell , Scott D. Casanova , David J. Mecklenburg , Eric J. Strauts
发明人： Joseph J. Geib , John R. Blake , David J. Wendell , Scott D. Casanova , David J. Mecklenburg , Eric J. Strauts
IPC分类号： G07D5/00
摘要： A coin processing system for processing a plurality of coins of mixed denominations comprises a rotatable disc for imparting motion to the plurality of coins, a sensor for differentiating between valid and invalid coins, a stationary sorting head, a diverter and a controller. The stationary sorting head has a lower surface generally parallel to and spaced slightly away from the rotatable disc. The lower surface forms a queuing channel and a plurality of exit channels for sorting and discharging coins of particular denominations. The queuing channel has a first segment for receiving coins and a second segment for moving the coins past the sensor and is configured to move coins at a faster rate along the second segment for increasing the spacing between adjacent coins. The diverter is disposed along the second segment beyond the sensor and is moveable between a first position for permitting coins to proceed to the plurality of exit channels and a second position for diverting coins to a reject region. The controller moves the diverter from the first position to the second position when the sensor detects an invalid coin.
摘要翻译： 一种用于处理混合面额的多个硬币的硬币处理系统，包括用于向多个硬币施加运动的可旋转盘，用于区分有效和无效硬币的传感器，固定分类头，转向器和控制器。 固定分拣头具有大致平行于并且与可旋转盘稍微远离的下表面。 下表面形成排队通道和多个出口通道，用于分类和排出特定面额的硬币。 排队通道具有用于接收硬币的第一段和用于使硬币移动通过传感器的第二段，并且被配置为沿着第二段以更快的速度移动硬币，以增加相邻硬币之间的间隔。 分流器沿着第二段布置成超过传感器，并且可在用于允许硬币进入多个出口通道的第一位置和用于将硬币转移到拒收区域的第二位置之间移动。 当传感器检测到无效硬币时，控制器将分流器从第一位置移动到第二位置。
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