公开(公告)号：US20150084646A1

公开(公告)日：2015-03-26

申请号：US14035321

申请日：2013-09-24

Applicant: Fred Mirow

Inventor： Fred Mirow

IPC: G01D5/20 ,  H03K17/95

CPC classification number: G01D5/20 ,  H03K17/951 ,  H03K17/9525

Abstract: A low power inductive proximity sensing system in which a DC voltage to the inductors is only applied for a short time period needed to detect the presence or absence of an appropriate object. After the detection time period is over, DC voltage is no longer applied to the inductors.

Abstract translation: 一种低功率电感式接近感应系统，其中仅电感器的直流电压仅在需要的短时间内施加以检测是否存在适当的物体。 检测时间结束后，直流电压不再施加于电感器。

公开(公告)号：US20140354070A1

公开(公告)日：2014-12-04

申请号：US14371267

申请日：2013-11-01

Applicant: Panasonic Corporation

Inventor： Kazuhiro Watanabe ,  Kouichi Ishino ,  Takeshi Nakayama ,  Masahiro Ishii

IPC: H03K17/965 ,  H03M1/12 ,  G01B7/14 ,  H01F38/14

CPC classification number: H03K17/965 ,  G01B7/14 ,  H01F38/14 ,  H01H2239/024 ,  H03K17/9525 ,  H03K17/97 ,  H03K2217/94057 ,  H03K2217/94068 ,  H03M1/12

Abstract: The present disclosure aims to provide a high-durability switch device. The switch device includes: a switch key top and a switch key bottom that are freely displaceable relative to each other, the switch key top including key top reception and transmitting coils that are connected to each other, and the switch key bottom including: a key bottom transmitting coil having a relative positional relationship with the key top receiving coil that changes according to a relative displacement operation with respect to the switch key top; a key bottom receiving coil having a relative positional relationship with the key top transmitting coil that changes according to the relative displacement operation with respect to the switch key top; a current supplier supplying current to the key bottom transmitting coil; and a determiner determining relative displacement with respect to the switch key top from induced current in the key bottom receiving coil.

Abstract translation: 本公开旨在提供一种耐久性高的开关装置。 开关装置包括：可相对于彼此自由移动的开关键顶部和开关键底部，开关键顶部包括彼此连接的键顶接收和发送线圈，开关键底部包括：键 所述底部发射线圈与所述键顶接收线圈的相对位置关系根据相对于所述开关键顶部的相对位移操作而改变; 具有与所述键顶发送线圈的相对位置关系的按键底部接收线圈根据相对于所述开关键顶部的相对位移操作而变化; 供应给钥匙底部发射线圈的电流的当前供应商; 以及确定器，其确定相对于开关键顶部的关键底部接收线圈中的感应电流的相对位移。

公开(公告)号：US20130193985A1

公开(公告)日：2013-08-01

申请号：US13770285

申请日：2013-02-19

Applicant: HONEYWELL INTERNATIONAL INC.

Inventor： John Kenneth Tillotson

IPC: G01R1/44

CPC classification number: G01R1/44 ,  H03K17/9502 ,  H03K17/9525 ,  H03K17/9547

Abstract: A proximity sensor includes a relatively simple temperature compensation circuit, and includes a variable gain oscillator, a temperature sensor circuit, and a proximity determination circuit. The variable gain oscillator has a gain that varies with the proximity of a target to a sensor coil, generates an oscillating electrical signal having a substantially constant amplitude magnitude, and generates an energy signal representative of the electrical energy needed to sustain oscillations. The temperature compensation circuit senses proximity sensor temperature and supplies a temperature signal representative thereof, and the proximity determination circuit, based on the energy signal, supplies a proximity signal representative of target proximity to the sensor coil. The proximity determination circuit includes a comparator and a fixed resistor network. The comparator circuit supplies the proximity signal. The fixed resistor network is coupled between the temperature sensor circuit and comparator circuit and supplies a temperature compensation signal to the comparator circuit.

Abstract translation: 接近传感器包括相对简单的温度补偿电路，并且包括可变增益振荡器，温度传感器电路和接近确定电路。 可变增益振荡器具有随着目标与传感器线圈的接近度而变化的增益，产生具有基本上恒定幅度幅度的振荡电信号，并产生代表维持振荡所需的电能的能量信号。 温度补偿电路检测接近传感器温度并提供代表其的温度信号，并且接近确定电路基于能量信号，提供代表传感器线圈的目标接近度的接近信号。 接近确定电路包括比较器和固定电阻器网络。 比较器电路提供接近信号。 固定电阻网络耦合在温度传感器电路和比较器电路之间，并向比较器电路提供温度补偿信号。

公开(公告)号：US20130193955A1

公开(公告)日：2013-08-01

申请号：US13696055

申请日：2011-03-17

Applicant: Reiner Krapf ,  Tobias Zibold ,  Andrej Albrecht

Inventor： Reiner Krapf ,  Tobias Zibold ,  Andrej Albrecht

IPC: G01R33/00

CPC classification number: G01R33/0011 ,  G01V3/08 ,  G01V3/15 ,  H03K17/9525 ,  H03K17/955

Abstract: A locator for detecting an article includes a push-pull measurement bridge configured to actuate a first and a second electromagnetic device in a variable ratio. Depending on the actuation the first electromagnetic device generates an alternating electromagnetic field in the region of the article. The locator further includes a comparator for detecting the article, should the variable ratio differ by more than a predetermined amount from a predetermined ratio.

Abstract translation: 用于检测物品的定位器包括被配置为以可变比率致动第一和第二电磁装置的推挽测量桥。 根据致动，第一电磁装置在制品的区域产生交变电磁场。 定位器还包括用于检测物品的比较器，如果可变比率与预定比率相差大于预定量。

公开(公告)号：US20120062242A1

公开(公告)日：2012-03-15

申请号：US13224697

申请日：2011-09-02

Applicant: Marc DE HUU ,  Peter HEIMLICHER

Inventor： Marc DE HUU ,  Peter HEIMLICHER

IPC: G01R27/32

CPC classification number: H03K17/9525

Abstract: An inductive proximity switch for detecting the presence of an object in a monitored area includes a coil (2), a pulse source (4) for supplying the coil (2) with transmitting current pulses (S1, S2, S3) at a period (T) larger than the duration (Ts) of the transmitting current pulses, and a processing circuit (6) for generating an output signal (9) based on received voltages (Ui1, Ui2, Ui3) varying in dependence of a change of position of the object. The received voltages are induced in the coil (2) after the duration (Ts) of a transmitting current pulse by the decaying current which previously flows in the object due to the voltage induced therein by the coil. The proximity switch has a suppression circuit (13, 13a, 13b, 13c) for suppressing a signal duration lower than a predetermined perturbation time (Tc1, Tc2) in the output signal (9).

Abstract translation: 用于检测被监视区域中物体的存在的感应式接近开关包括线圈（2），用于向线圈（2）提供传输电流脉冲（S1，S2，S3）的脉冲源（4） T）大于发射电流脉冲的持续时间（Ts）;以及处理电路（6），用于根据接收电压（Ui1，Ui2，Ui3）产生输出信号（9），所述接收电压（Ui1，Ui2，Ui3） 物体。 在线圈（2）中的接收电压在由发生电流脉冲的持续时间（Ts）之后由于由线圈感应的电压而被预先流入物体中的衰减电流引起。 接近开关具有用于抑制低于输出信号（9）中的预定扰动时间（Tc1，Tc2）的信号持续时间的抑制电路（13,13a，13b，13c）。

公开(公告)号：US20080204118A1

公开(公告)日：2008-08-28

申请号：US11884040

申请日：2006-02-08

Applicant: Thomas Kuhn

Inventor： Thomas Kuhn

IPC: H03K17/95

CPC classification number: H03K17/9505 ,  H03K17/9525 ,  H03K2017/9527

Abstract: The invention relates to a preferably ferriteless inductive proximity switch having at least one transmitting coil, one oscillator circuit and at least two receiving coils arranged in the alternating magnetic field of the transmitting coil, whereby the transmitting coil and the receiving coil are arranged adjacent to each other on a printed circuit board, and also having an evaluation circuit connected to the receiving coil for evaluating the received signal of the receiving coils when a target approaches the proximity switch. The receiving coils (E1, E2, Ei, En, 7, 8, 12, 13) as well as the transmitting coil (S, SA, 11) are made up of at least one polygonal or annular or elliptical winding and they each delineate a polygonal or annular or elliptical coil surface area, whereby either the transmitting coil (S, 11) is surrounded by a first receiving coil (E1, 12) which is, in turn, surrounded by a second receiving coil (E2, 13) and optionally, said second receiving coil is surrounded by a third or nth peripheral receiving coil (En), or a first receiving coil (7) is surrounded by the second receiving coil and optionally, said second receiving coil is surrounded by a third or nth receiving coil, whereby the nth receiving coil is peripherally surrounded by the transmitting coil (SA), so that in both alternatives, the coil surface area spanned by the outermost coil in each case completely covers all of the coil surface areas of the other coils situated further towards the inside and moreover, in a perpendicular parallel projection onto the coils, the transmitting coil (S, 11, SA) is at a distance from its closest adjacent receiving coil (E1, E2, 12, 13, En) without the transmitting coils and/or the receiving coils overlapping.

公开(公告)号：US6133654A

公开(公告)日：2000-10-17

申请号：US243782

申请日：1999-02-03

Applicant: Peter Heimlicher

Inventor： Peter Heimlicher

IPC: H01H36/00 ,  H03K17/90 ,  H03K17/95 ,  H02B1/24

CPC classification number: H03K17/9505 ,  H03K17/9525

Abstract: An inductive proximity switch is provided which comprises a coil, means for supplying the coil with periodic transmitting current pulses, and means for processing signals which correspond to voltages induced in said coil after the end of a transmitting current pulse by the decaying current which previously flows in the detected body due to the voltage induced therein by the transmitting current pulse. In order to improve the robustness of the proximity switch so that it is suitable for durable use in an aggressive environment, the coil, the means for supplying the coil with a periodical transmitting current, and the signal processing means are arranged in a cylindrical housing which is closed on the side of the active surface of the proximity switch and consists of a metal which is not ferromagnetic and whose specific electric resistance is relatively high.

Abstract translation: 提供了一种电感式接近开关，其包括线圈，用于向线圈提供周期性的传输电流脉冲的装置，以及用于处理与在先前流过的衰减电流之后的发射电流脉冲结束之后在所述线圈中感应的电压的信号的装置 在检测体中由于其中由发射电流脉冲感应的电压。 为了提高接近开关的鲁棒性，使其适合于在侵蚀性环境中的耐久使用，线圈，用于向线圈提供周期性传输电流的装置和信号处理装置布置在圆柱形壳体中， 在接近开关的有源表面侧封闭，并且由不是铁磁性并且其比电阻相对较高的金属组成。

公开(公告)号：US5680103A

公开(公告)日：1997-10-21

申请号：US614687

申请日：1996-03-13

Applicant: John Edward Turner ,  Tom Scrivner ,  Robert F. Turner

Inventor： John Edward Turner ,  Tom Scrivner ,  Robert F. Turner

IPC: G01V3/10 ,  H03K17/95 ,  G08B13/24

CPC classification number: H03K17/9525 ,  G01V3/105

Abstract: A walk-through metal detection system with split field generation coils excited in phase to generate an electromagnetic field having a substantially uniform vertical field density. A plurality of vertically distributed receiver coils are also provided, each receiver coil connected to a separate detector circuit for detecting disturbances in the generated field caused by the presence of metal objects. The signals are processed to generate an output signal indicative of the individual metal mass (or masses) of objects detected within the generated electromagnetic field. The output signal is compared to a threshold signal, and if greater than the threshold signal, then a metal object is presumed to be present within the electromagnetic field and an alarm is sounded. A remote control may be used by an operator to adjust the threshold signals. Additional processing of the detector circuit outputs differentiates between a single object of large metal mass and multiple objects of combined metal mass. The detector circuit outputs may be processed to differentiate between ferrous and non-ferrous metal objects and differentiate between the metal compositions of various metal objects.

Abstract translation: 具有分裂场产生线圈的步进金属检测系统在相位上激发以产生具有基本上均匀的垂直场密度的电磁场。 还提供了多个垂直分布的接收器线圈，每个接收器线圈连接到单独的检测器电路，用于检测由金属物体的存在引起的所产生场中的扰动。 信号被处理以产生指示在产生的电磁场内检测到的物体的单个金属质量（或质量）的输出信号。 将输出信号与阈值信号进行比较，如果大于阈值信号，则假设金属物体存在于电磁场内，并发出报警。 操作员可以使用遥控器来调整阈值信号。 检测器电路的附加处理输出大金属质量的单个物体和组合的金属质量的多个物体之间的差异。 可以对检测器电路输出进行处理以区分黑色金属和有色金属物体，并区分各种金属物体的金属组成。

公开(公告)号：US4709213A

公开(公告)日：1987-11-24

申请号：US752018

申请日：1985-07-08

Applicant: Robert J. Podhrasky

Inventor： Robert J. Podhrasky

IPC: G01V3/10 ,  G01V3/11 ,  H03K17/95 ,  G01R15/08 ,  H03M1/06

CPC classification number: G01V3/105 ,  H03K17/9512 ,  H03K17/9525

Abstract: A metal detector circuit includes a transmit coil (12) and a receive coil (56) arranged in a balanced induction configuration in an electromagnetic field. The receive signal from the receive coil (56) is input to electronic switches (146, 148) which receive quadrature reference inputs from a phase shift circuit (112). The phase demodulated outputs of the switches (146, 148) are passed through amplifiers and input to an analog-to-digital converter (324) to produce digital signal samples which are transmitted through a bus (326). The bus (326) is connected to random access memory (414, 416) and a read only memory (418) which includes a stored signal processing program. A microprocessor (374) is connected to the bus (376) for receiving the digital signal samples and the stored program from memory (418). The microprocessor (374) executes the stored signal processing program to produce a digital output signal which is transmitted through the bus (326) to a digital-to-analog converter (360). The converter (360) produces an analog output signal which is passed to an output driver circuit which produces a target indication signal at a speaker (284). The digital signal processing provided by the microprocessor (374) includes concurrent ground cancellation and discrimination without the need for operator selection of these functions. The digital output produced by the microprocessor (374), upon detection of an object in the electromagnetic field, can be displayed in digital readouts (474-482).

Abstract translation: 金属检测器电路包括在电磁场中以平衡的感应配置布置的发射线圈（12）和接收线圈（56）。 来自接收线圈（56）的接收信号被输入到从相移电路（112）接收正交参考输入的电子开关（146,148）。 开关（146,148）的相位解调输出通过放大器并输入到模拟 - 数字转换器（324），以产生通过总线（326）发送的数字信号采样。 总线（326）连接到随机存取存储器（414,416）和仅包含存储的信号处理程序的只读存储器（418）。 微处理器（374）连接到总线（376），用于从存储器（418）接收数字信号采样和存储的程序。 微处理器（374）执行所存储的信号处理程序，以产生通过总线（326）发送到数模转换器（360）的数字输出信号。 转换器（360）产生模拟输出信号，该模拟输出信号被传递到在扬声器（284）产生目标指示信号的输出驱动器电路。 由微处理器（374）提供的数字信号处理包括并行接地取消和鉴别，而不需要操作员选择这些功能。 微处理器（374）在检测到电磁场中的物体时产生的数字输出可以以数字读出（474-482）显示。

公开(公告)号：US3436649A

公开(公告)日：1969-04-01

申请号：US3436649D

申请日：1965-06-23

Applicant: OMRON TATEISI ELECTRONICS CO

Inventor： TAKECHI SABURO ,  IIO KENJI

IPC: G01V3/00 ,  G01V3/10 ,  H03K17/95 ,  H03K17/97 ,  G01R33/12 ,  G01R33/00

CPC classification number: G01V3/00 ,  G01V3/107 ,  H03K17/9525 ,  H03K17/97 ,  H03K2017/9706