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1. 发明申请

US20130030726A1 CIRCUITRY FOR MEASURING AND COMPENSATING PHASE AND AMPLITUDE DIFFERENCES IN NDT/NDI OPERATION 有权
标题翻译：用于测量和补偿无损检测/ NDI操作中的相位和幅度差异的电路
公开(公告)号：US20130030726A1
公开(公告)日：2013-01-31
申请号：US13194568
申请日：2011-07-29
申请人： Andrew THOMAS , Marc DULAC
发明人： Andrew THOMAS , Marc DULAC
IPC分类号： G06F19/00 , G01N29/48
CPC分类号： G01N29/32 , G01N29/36 , G01N29/4436
摘要： Disclosed are a method and an NDT/NDI inspection device deploying digital circuitry to conduct detection and compensation of phase and amplitude shift in responding signals. A digital waveform generator, such as a direct digital synthesizer (DDS) is used to generate a digital sine-wave of a specific frequency and amplitude, mimicking the pulser frequency and amplitude. The sine-wave is converted to analog signal through a DAC and transmitted to the transducer. The received analog sine-wave from the transducer is converted back to a digital signal through an ADC. The transmitted and received digital signals are then compared for phase and amplitude differences. A null circuit involving another waveform generating component is employed to compensate the detected phase and amplitude differences. As a result the phase and amplitude differences are effectively eliminated before being further processed and analyzed for defects information.
摘要翻译：公开了一种方法和NDT / NDI检测装置，其部署数字电路以进行响应信号中的相位和幅度偏移的检测和补偿。诸如直接数字合成器（DDS）的数字波形发生器用于产生特定频率和幅度的数字正弦波，模拟脉冲发生器的频率和振幅。正弦波通过DAC转换为模拟信号并传输到传感器。来自传感器的接收到的模拟正弦波通过ADC转换回数字信号。然后将发送和接收的数字信号进行相位和幅度差分比较。采用涉及另一个波形发生部件的零电路来补偿检测到的相位和幅度差异。因此，在进一步处理和分析缺陷信息之前，相位和幅度差异被有效地消除。

2. 发明申请

US20150085143A1 METHOD AND CIRCUITRY FOR REMOVING CIRCLING DRIFTS IN NDT/NDI MEASUREMENT DISPLAY 有权
标题翻译：用于在无损检测/ NDI测量显示中移除环路的方法和电路
公开(公告)号：US20150085143A1
公开(公告)日：2015-03-26
申请号：US14036078
申请日：2013-09-25
申请人： Andrew THOMAS
发明人： Andrew THOMAS
IPC分类号： H04N17/00
CPC分类号： H04N17/004 , G01N27/9046
摘要： Disclosed is a method and an apparatus for removing circling drifts on the display of the measured eddy current or other continuous waves. The circling dot which is supposed to be a static dot can obscure information required by the operator to judge if a small defect is present. Embodiments of presently disclosed harmonic rejection filters are tunable and employed to effectively abate or eliminate signals with frequencies that are multiples of operating frequencies, resulting in the removal of the circling effects on the display.
摘要翻译：公开了一种用于去除测量的涡流或其他连续波的显示器上的循环漂移的方法和装置。假定为静点的盘旋点可能会掩盖操作者所需的信息，以判断是否存在小的缺陷。目前公开的谐波抑制滤波器的实施例是可调谐的并且用于有效地消除或消除具有工作频率倍数的频率的信号，导致在显示器上消除盘旋效应。

3. 发明申请

US20130255386A1 APPARATUS FOR AND A METHOD OF IMPROVED TIMING CONTROL FOR NON-DESTRUCTIVE TESTING AND INSPECTION 有权
标题翻译：用于非破坏性测试和检查的改进时序控制的方法
公开(公告)号：US20130255386A1
公开(公告)日：2013-10-03
申请号：US13434276
申请日：2012-03-29
申请人： Andrew THOMAS
发明人： Andrew THOMAS
IPC分类号： G01N29/00 , H03K3/023
CPC分类号： G01N29/343 , G01N29/04 , G01N29/043 , G01N29/34 , G01N33/00 , G01N2033/0096 , G01N2291/0237 , G01N2291/02854 , H01L41/042 , H03K5/131
摘要： A pulse generation circuit and method includes using digital signals to trigger a first and second varying analog signals and detecting when they reach one or more reference levels. In response to the first and second varying analog signals reaching one or more reference levels, a first and a second digital control signals are produced and provided as input to a pulser producing a voltage excitation pulse having a width and timing defined by the first and second digital control signals.
摘要翻译：脉冲发生电路和方法包括使用数字信号来触发第一和第二变化的模拟信号并检测它们何时达到一个或多个参考电平。响应于第一和第二变化的模拟信号达到一个或多个参考电平，产生第一和第二数字控制信号作为脉冲发生器的输入，产生具有由第一和第二信号定义的宽度和定时的电压激励脉冲数字控制信号。

4. 发明申请

US20130257415A1 CIRCUITRY FOR AND A METHOD OF COMPENSATING DRIFT IN RESISTANCE IN EDDY CURRENT PROBES 有权
标题翻译：电路与电流干扰电流补偿方法
公开(公告)号：US20130257415A1
公开(公告)日：2013-10-03
申请号：US13435706
申请日：2012-03-30
申请人： Andrew THOMAS
发明人： Andrew THOMAS
IPC分类号： G01R35/00
CPC分类号： G01N27/9046
摘要： Disclosed is an eddy current non-destructive inspection device which includes an eddy current probe with a probe conductor resistance dynamically changing due to operation conditions, such as temperature. The device further includes a signal generating circuit generating an inspection frequency signal and a low frequency signal. Sensed inspection frequency signals are processed to produce resulting signals with possible drift. A low frequency processing circuit includes a resistance calculator producing a substantially true value of the dynamic probe resistance, based on which compensation operations are configured to correct the drifted resulting signals and produce corrected resulting signals.
摘要翻译：公开了一种涡流无损检测装置，其包括具有探针导体电阻的涡流探针，其由于诸如温度的操作条件而动态变化。该装置还包括产生检查频率信号和低频信号的信号发生电路。检测到的检测频率信号被处理以产生可能漂移的结果信号。低频处理电路包括电阻计算器，其产生基本上真实的动态探针电阻值，基于该电阻计算器补偿操作被配置为校正漂移的结果信号并产生校正后的结果信号。

5. 发明申请

US20110126624A1 SEQUENTIALLY FIRED HIGH DYNAMIC RANGE NDT/NDI INSPECTION DEVICE 有权
标题翻译：顺序发射高动态范围无损检测/ NDI检测装置
公开(公告)号：US20110126624A1
公开(公告)日：2011-06-02
申请号：US12629565
申请日：2009-12-02
申请人： Andrew THOMAS
发明人： Andrew THOMAS
IPC分类号： G01N29/04
CPC分类号： G01N29/4463 , G01N27/90 , G01N29/04
摘要： An apparatus for performing ultrasonic inspection of an object, during one measurement on the object, triggers a sequence of excitations of the probe system and receives a sequence of substantially identical echo signals reflected from the object, and further scales each echo signal to different degrees to increase and extend the dynamic range of the echo signals. An A/D converter is then used to digitize the scaled signal sequentially in a manner which dispenses the need for using numerous A/D converters and the associated filters. The digitized signal samples are then combined to produce a single digital output in a manner that is not over-flowed and with desirable resolution.
摘要翻译：在物体的一次测量期间对物体进行超声波检查的装置触发探针系统的一系列激励，并接收从物体反射的基本上相同的回波信号的序列，并且进一步将每个回波信号按比例缩放到增加和扩展回波信号的动态范围。然后使用A / D转换器以不需要使用大量A / D转换器和相关滤波器的方式顺序地对缩放信号进行数字化。然后将数字化信号样本组合以产生不过度流动且具有期望分辨率的方式的单个数字输出。

6. 发明申请

US20090223294A1 ULTRASONIC FAULT DETECTION SYSTEM USING A HIGH DYNAMIC RANGE ANALOG TO DIGITAL CONVERSION SYSTEM 有权
公开(公告)号：US20090223294A1
公开(公告)日：2009-09-10
申请号：US12410922
申请日：2009-03-25
申请人： Andrew THOMAS
发明人： Andrew THOMAS
IPC分类号： G01N29/04
CPC分类号： G01N29/44 , G01N29/043 , G01N29/262 , G01N29/42 , G01N29/4463 , G01N2291/044 , G01N2291/102 , H03M1/188
摘要： A method and apparatus for effecting ultrasonic flaw detection of an object processes an echo signal received from the object being tested in at least three signal channels, wherein the echo signal is scaled to different degrees along each channel to increase and extend the dynamic range of an associated A/D converter system, in a manner which dispenses with the need for using numerous analog high pass and low pass filters and a variable gain amplifier. This reduces complexity and avoids performance limitations. The digital to analog converters sample the differently scaled input signal and a selection circuit selects the output of the digital output obtained from that analog to digital converter which has the highest gain, but which has not overflowed. The digital outputs are seamlessly merged to produce an output that can be displayed as a scan display which shows the location of faults.

7. 发明申请

US20090045994A1 MULTIPLE MODE DIGITIZATION SYSTEM FOR A NON-DESTRUCTIVE INSPECTION INSTRUMENT 有权
标题翻译：用于非破坏性检查仪器的多模式定位系统
公开(公告)号：US20090045994A1
公开(公告)日：2009-02-19
申请号：US12192369
申请日：2008-08-15
申请人： Michael DRUMMY , Andrew THOMAS , Denys LAQUERRE , David LAROCHELLE , Pierre LANGLOIS , Steven BESSER
发明人： Michael DRUMMY , Andrew THOMAS , Denys LAQUERRE , David LAROCHELLE , Pierre LANGLOIS , Steven BESSER
IPC分类号： H03M1/12
CPC分类号： G01R19/2509 , G01N29/262 , G01N29/44
摘要： A multiple mode digitization system for a non-destructive inspection instrument which makes use of a multiplexing circuit and a single set of analog to digital converters to efficiently digitize analog test signals from a plurality of inputs. In the preferred embodiment, each of the analog to digital converters in the system is driven with an independent and separate clock signal, allowing for propagation delay compensation among the plurality of test signals as well as interleaved sampling such that custom sampling rates can be used for each input without the need for more than one clock frequency. In an alternate embodiment, phase adjustments on the sampling clocks are used only for interleave sampling, and digital filters are used to provide signal propagation delay compensation.
摘要翻译：一种用于非破坏性检查仪器的多模式数字化系统，其利用多路复用电路和单组模数转换器来有效地数字化来自多个输入的模拟测试信号。在优选实施例中，系统中的每个模数转换器都用独立和分离的时钟信号驱动，允许多个测试信号之间的传播延迟补偿以及交错采样，使得定制采样速率可用于每个输入不需要多于一个时钟频率。在替代实施例中，采样时钟上的相位调整仅用于交织采样，并且使用数字滤波器来提供信号传播延迟补偿。

8. 发明申请

US20090178485A1 ULTRASONIC FAULT DETECTION SYSTEM USING A HIGH DYNAMIC RANGE ANALOG TO DIGITAL CONVERSION SYSTEM 有权
标题翻译：使用高动态范围模拟数字转换系统的超声波故障检测系统
公开(公告)号：US20090178485A1
公开(公告)日：2009-07-16
申请号：US12411088
申请日：2009-03-25
申请人： Andrew THOMAS
发明人： Andrew THOMAS
IPC分类号： G01N29/00
CPC分类号： G01N29/44 , G01N29/043 , G01N29/262 , G01N29/42 , G01N29/4463 , G01N2291/044 , G01N2291/102 , H03M1/188
摘要： A method and apparatus for effecting ultrasonic flaw detection of an object processes an echo signal received from the object being tested in at least three signal channels, wherein the echo signal is scaled to different degrees along each channel to increase and extend the dynamic range of an associated A/D converter system, in a manner which dispenses with the need for using numerous analog high pass and low pass filters and a variable gain amplifier. This reduces complexity and avoids performance limitations. The digital to analog converters sample the differently scaled input signal and a selection circuit selects the output of the digital output obtained from that analog to digital converter which has the highest gain, but which has not overflowed. The digital outputs are seamlessly merged to produce an output that can be displayed as a scan display which shows the location of faults.
摘要翻译：用于实现物体的超声波探伤的方法和装置处理在至少三个信号通道中从被测试对象接收的回波信号，其中回波信号沿着每个通道被缩放到不同程度，以增加和扩展一个相关的A / D转换器系统，其不需要使用大量模拟高通和低通滤波器和可变增益放大器。这降低了复杂性并避免了性能限制。数模转换器对不同比例的输入信号进行采样，并且选择电路选择从具有最高增益但尚未溢出的模数转换器获得的数字输出的输出。数字输出无缝合并，产生可显示为显示故障位置的扫描显示的输出。

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