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1. 发明专利

DE2904306C2 未知
公开(公告)号：DE2904306C2
公开(公告)日：1992-02-06
申请号：DE2904306
申请日：1979-02-05
申请人： WHITE'S ELECTRONICS, INC., SWEET HOME, OREG., US
发明人： KARBOWSKI, JAMES PATRICK, PHILOMATH, OREG., US
IPC分类号： G01V3/10 , G01V3/11
摘要： A transmit-receive type buried metal detector is described employing wide gating pulses to transmit a portion of the received signal through a gate means to an averaging means for reducing any noise in the signal. The gating pulses are centered on the received signal waveform at a centering position where a background signal component of such received signal is of minimum amplitude. As a result, equal positive and negative polarity portions of the background signal component are transmitted through the gate means during each pulse and are averaged to zero in order to eliminate such background signal from the output voltage of the averaging means. The background signal component may be produced by mineralized soil or by undesired metal objects located near the metal object sought to be detected. As a result, the mineral soil signal component or the background signal component of the undesired metal objects is eliminated from the output voltage of the averaging capacitor. This enables detection of the desired metal object in mineral soil or enables such desired metal object to be discriminated from undesired objects. A wide gating pulse greater than about 1/3 cycle and preferably equal to approximately 1/2 cycle of the oscillator signal, is used for improved noise rejection including random noise of high frequency and harmonics of 60 hertz power line frequency which are close to harmonics of the oscillator signal.

2. 发明申请

WO1994002079A1 TUBE PLACEMENT VERIFIER SYSTEM 审中-公开
标题翻译：管布置验证系统
公开(公告)号：WO1994002079A1
公开(公告)日：1994-02-03
申请号：PCT/US1993006518
申请日：1993-07-12
申请人： ABBOTT LABORATORIES , WHITE'S ELECTRONICS, INC.
发明人： ABBOTT LABORATORIES , WHITE'S ELECTRONICS, INC. , HIRSCHI, Richard, Edward , KARBOWSKI, James, Patrick , TIEFENTHAL, James, Lawrence , ISAAC, Ronald, Mark
IPC分类号： A61B19/00
CPC分类号： A61M25/0127 , A61B17/3403 , Y10S128/903
摘要： A system for detecting the position of an object within a body of biological tissue includes a resonant circuit attached to the object and a probe (10) including a receiver/transmitter that operates at the resonant frequency of the object. The resonant circuit rings in response to pulses transmitted from the probe (10) thereby activating receiver circuits which control a visual display (24) indicating the direction the probe should be moved to center it over the object. When the object is centered a second visual display (22) provides confirmation.
摘要翻译：用于检测物体在生物组织体内的位置的系统包括附接到物体的谐振电路和包括在物体的谐振频率下操作的接收器/发射器的探针（10）。谐振电路响应于从探针（10）传输的脉冲而响应，从而启动接收器电路，其控制指示探针应该被移动以将其置于物体上方的视觉显示（24）。当对象居中时，第二个视觉显示（22）提供确认。

3. 发明公开

EP0782012A2 Plural frequency method and system for identifying metal objects in a background environment using a target model 失效
标题翻译：用于通过使用目标模型识别在背景环境的金属物体的多个频率的方法和装置
公开(公告)号：EP0782012A2
公开(公告)日：1997-07-02
申请号：EP96119187.1
申请日：1996-11-29
申请人： WHITE'S ELECTRONICS, INC.
发明人： Shoemaker, Donald K.
IPC分类号： G01V3/10
CPC分类号： G01V3/105
摘要： A system for detecting metal targets located in a background environment such as the ground evaluates metal targets by processing components of signals at two or more different frequencies. A component of the received signal induced by the ground can be eliminated by subtracting signal components measured at two different frequencies. The received signal can be processed to account for changes in the background response with frequency. The type of an unknown target can be identified by processing background excluded components to produce data characterizing the target type.
摘要翻译：一种用于检测位于背景环境金属靶系统：如地面通过在两个或更多个不同频率的处理信号的组件评估金属靶。由地面引起的接收信号的A组分可以通过减去在两个不同的频率下测量的信号分量被消除。所接收的信号可以被处理以考虑与频率的背景响应的变化。类型的未知目标的可通过处理背景排除组分以产生数据表征所述目标类型来识别。

4. 发明授权

EP0580396B1 Metal detector with display 失效
标题翻译：与显示金属探测器
公开(公告)号：EP0580396B1
公开(公告)日：1997-11-12
申请号：EP93305680.6
申请日：1993-07-20
申请人： WHITE'S ELECTRONICS, INC.
发明人： Rowan, Mark Douglas
IPC分类号： G01V3/10
CPC分类号： G01V3/107

5. 发明公开

EP0782012A3 Plural frequency method and system for identifying metal objects in a background environment using a target model 失效
标题翻译：用于通过使用目标模型识别在背景环境的金属物体的多个频率的方法和装置
公开(公告)号：EP0782012A3
公开(公告)日：1998-01-28
申请号：EP96119187.1
申请日：1996-11-29
申请人： WHITE'S ELECTRONICS, INC.
发明人： Shoemaker, Donald K.
IPC分类号： G01V3/10
CPC分类号： G01V3/105
摘要： A system for detecting metal targets located in a background environment such as the ground evaluates metal targets by processing components of signals at two or more different frequencies. A component of the received signal induced by the ground can be eliminated by subtracting signal components measured at two different frequencies. The received signal can be processed to account for changes in the background response with frequency. The type of an unknown target can be identified by processing background excluded components to produce data characterizing the target type.

6. 发明公开

EP0780704A2 Plural frequency method and system for identifying metal objects in a background environment 失效
标题翻译：用于识别在背景环境的金属物体的多个频率的方法和装置
公开(公告)号：EP0780704A2
公开(公告)日：1997-06-25
申请号：EP96119190.5
申请日：1996-11-29
申请人： WHITE'S ELECTRONICS, INC.
发明人： Shoemaker, Donald K.
IPC分类号： G01V3/10
CPC分类号： G01V3/104
摘要： A system for detecting metal targets located in a background environment such as the ground evaluates metal targets by processing components of signals at two or more different frequencies. A component of the received signal induced by the ground can be eliminated by subtracting signal components measured at two different frequencies. The received signal can be processed to account for changes in the background response with frequency. The type of an unknown target can be identified by processing background excluded components to produce data characterizing the target type.
摘要翻译：一种用于检测位于背景环境金属靶系统：如地面通过在两个或更多个不同频率的处理信号的组件评估金属靶。由地面引起的接收信号的A组分可以通过减去在两个不同的频率下测量的信号分量被消除。所接收的信号可以被处理以考虑与频率的背景响应的变化。类型的未知目标的可通过处理背景排除组分以产生数据表征所述目标类型来识别。

7. 发明公开

EP0580396A2 Metal detector with display 失效
标题翻译： Metallsuchgerätmit Anzeige。
公开(公告)号：EP0580396A2
公开(公告)日：1994-01-26
申请号：EP93305680.6
申请日：1993-07-20
申请人： WHITE'S ELECTRONICS, INC.
发明人： Rowan, Mark Douglas
IPC分类号： G01V3/10
CPC分类号： G01V3/107
摘要： A metal detector having a receive signal responsive to detected metal objects and having a display panel (139) that can simultaneously display a plurality of phase angles (205) on one scale associated with the receive signal. Additionally, the display panel can simultaneously display on the other scale (210) a second variable associated with the receive signal at each particular phase angle. The second variable is user selectable and can be either (1) a count of the number of times when the signal amplitude exceeds a predetermined threshold level at a particular phase angle or (2) the signal amplitude when the signal is at a particular phase angle.
摘要翻译：一种金属检测器，具有响应于检测到的金属物体的接收信号，并且具有显示面板（139），该显示面板可同时在与接收信号相关联的一个刻度上显示多个相位角（205）。另外，显示面板可以在每个特定相位角处同时在另一个比例（210）上显示与接收信号相关联的第二变量。第二变量是用户可选择的，并且可以是（1）在特定相位角处信号幅度超过预定阈值电平的次数的计数，或者（2）当信号处于特定相位角时的信号幅度。

8. 发明授权

EP0780704B1 Plural frequency method and system for identifying metal objects in a background environment 失效
标题翻译：用于识别在背景环境的金属物体的多个频率的方法和装置
公开(公告)号：EP0780704B1
公开(公告)日：2001-06-20
申请号：EP96119190.5
申请日：1996-11-29
申请人： WHITE'S ELECTRONICS, INC.
发明人： Shoemaker, Donald K.
IPC分类号： G01V3/10
CPC分类号： G01V3/104

9. 发明公开

EP0780704A3 Plural frequency method and system for identifying metal objects in a background environment 失效
标题翻译：用于识别在背景环境的金属物体的多个频率的方法和装置
公开(公告)号：EP0780704A3
公开(公告)日：1998-01-28
申请号：EP96119190.5
申请日：1996-11-29
申请人： WHITE'S ELECTRONICS, INC.
发明人： Shoemaker, Donald K.
IPC分类号： G01V3/10
CPC分类号： G01V3/104
摘要： A system for detecting metal targets located in a background environment such as the ground evaluates metal targets by processing components of signals at two or more different frequencies. A component of the received signal induced by the ground can be eliminated by subtracting signal components measured at two different frequencies. The received signal can be processed to account for changes in the background response with frequency. The type of an unknown target can be identified by processing background excluded components to produce data characterizing the target type.

10. 发明公开

EP0580396A3 Metal detector with display 失效
标题翻译：金属探测器与显示
公开(公告)号：EP0580396A3
公开(公告)日：1994-07-27
申请号：EP93305680.6
申请日：1993-07-20
申请人： WHITE'S ELECTRONICS, INC.
发明人： Rowan, Mark Douglas
IPC分类号： G01V3/10
CPC分类号： G01V3/107
摘要： A metal detector having a receive signal responsive to detected metal objects and having a display panel (139) that can simultaneously display a plurality of phase angles (205) on one scale associated with the receive signal. Additionally, the display panel can simultaneously display on the other scale (210) a second variable associated with the receive signal at each particular phase angle. The second variable is user selectable and can be either (1) a count of the number of times when the signal amplitude exceeds a predetermined threshold level at a particular phase angle or (2) the signal amplitude when the signal is at a particular phase angle.

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