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11. 发明授权

US3732503A Proximity switch including variable frequency oscillator with ferrite control element 失效
标题翻译：接近开关，包括带有铁制控制元件的变频振荡器
公开(公告)号：US3732503A
公开(公告)日：1973-05-08
申请号：US3732503D
申请日：1972-02-11
申请人： RAPP W , ALBRECHT W
发明人： RAPP W , ALBRECHT W
IPC分类号： H03K17/95 , G08C21/00 , H01F21/06 , H03B5/12
CPC分类号： H03K17/9545 , H03K17/9547 , Y10T307/852
摘要： A proximity switch is provided having an oscillator with a resonant circuit with a variable inductance. The output of the oscillator is fed through a low pass filter and rectifier to a switching circuit which is activated at a predetermined amplitude. The proximity switch is activated when a control body of non-magnetizable ferrite material is moved in close proximity to the inductor of the resonant circuit, thereby increasing the inductance and reducing the frequency of oscillation, and maintaining or increasing the amplitude of the output of the oscillator, the lower frequency and high amplitude signal being passed by the low pass filter and applied after rectification to activate the switch. The switch is not activated by electrically conductive materials because the frequency of the oscillator does not change and the amplitude of its output is damped, and it is not actuated by magnetic materials such as steel chips or permanent magnets because of high eddy current and hysteresis losses induced into the resonant circuit and damping of its output which fail to provide the output necessary to trigger the switch.
摘要翻译：提供一种接近开关，具有具有可变电感的谐振电路的振荡器。振荡器的输出通过低通滤波器和整流器馈送到以预定幅度被激活的开关电路。当非磁化铁氧体材料的控制体靠近谐振电路的电感器移动时，接近开关被激活，从而增加电感并降低振荡频率，并且保持或增大振荡频率振荡器，低频和高振幅信号由低通滤波器传递，并在整流后施加以激活开关。开关不被导电材料激活，因为振荡器的频率不变，其输出的幅度被阻尼，并且由于高的涡电流和磁滞损耗而不被诸如钢芯片或永磁体的磁性材料驱动引起谐振电路和其输出的阻尼，其不能提供触发开关所必需的输出。

12. 发明授权

US3665382A Vehicle detection apparatus 失效
标题翻译：车辆检测装置
公开(公告)号：US3665382A
公开(公告)日：1972-05-23
申请号：US3665382D
申请日：1969-10-30
申请人： MARBELITE CO
发明人： SIKLOS GREGORY
IPC分类号： G08G1/042 , H03K17/95 , G08G1/01
CPC分类号： H03K17/9545 , G08G1/042 , H03K17/9547
摘要： A vehicle detection oscillating circuit includes an inductive sensing loop imbedded in a road, or highway. The output signal amplitude of the oscillating circuit fluctuates when a vehicle is near the sensing loop. A differential amplifier has one input coupled without, and a second with a delay circuit to the output of the oscillator circuit. The differential amplifier is coupled to a relay which is normally energized and becomes de-energized upon the detection of a vehicle near the sensing loop.

13. 发明授权

US3528004A Apparatus for detecting the proximity of a metal body 失效
标题翻译：检测金属物体接近度的装置
公开(公告)号：US3528004A
公开(公告)日：1970-09-08
申请号：US3528004D
申请日：1967-09-25
申请人： HAYAO KATABAMI
发明人： KATABAMI HAYAO
IPC分类号： G01V3/10 , H03K17/95 , G01R33/12
CPC分类号： G01V3/101 , H03K17/9545

14. 发明申请

US20180123587A1 OSCILLATOR AND INDUCTIVE PROXIMITY SWITCH 审中-公开
公开(公告)号：US20180123587A1
公开(公告)日：2018-05-03
申请号：US15556678
申请日：2015-03-09
申请人： Pepperl + Fuchs GmbH
发明人： Thomas Kühn
IPC分类号： H03K17/95 , G01V3/08
CPC分类号： H03K17/9545 , G01V3/08 , H03K17/9512 , H03K17/9547 , H03K2217/94031
摘要： The invention relates to an oscillator comprising a resonant circuit having at least one inductor and one capacitor and having a feedback amplifier, wherein there is at least one trimming resistor in a feedback circuit of the amplifier. The oscillator is characterized in that there is an electronic switching device for alternately connecting and disconnecting the trimming resistor, in that a trimming circuit is formed by the trimming resistor and the electronic switching device, in that there is a drive device for driving the electronic switching device, in that the electronic switching device, together with the drive device, is designed to alternately connect and disconnect the trimming resistor in a switching sequence, and in that an average time value of the electrical resistor of the trimming circuit, which is active in an oscillator mode, is defined by the switching sequence.

15. 发明授权

US09214936B2 Non-contact sensing module and method of manufacturing the same 有权
标题翻译：非接触感应模块及其制造方法
公开(公告)号：US09214936B2
公开(公告)日：2015-12-15
申请号：US13920799
申请日：2013-06-18
申请人： Hyundai Motor Company , DH Holdings Co., Ltd.
发明人： Myung-Sub Kum , Jong-Sang Noh , Jung-Min Lee
IPC分类号： G01R27/26 , H03K17/95
CPC分类号： G01D5/22 , G01R27/2611 , H01H21/26 , H01H2231/026 , H03K17/9502 , H03K17/9505 , H03K17/9545 , Y10T29/49126
摘要： A non-contact sensing module includes a coil printed circuit board in which a reference pattern coil may be formed at an upper surface and in which a sensing pattern coil may be formed at a lower surface and that has a mounting hole at the center, and a main printed circuit board that may be coupled to the mounting hole and that may be vertically disposed at an upper surface of the coil printed circuit board and that may be electrically connected to the reference pattern coil and the sensing pattern coil.
摘要翻译：非接触感测模块包括线圈印刷电路板，其中可以在上表面形成参考图案线圈，并且可以在下表面形成感测图案线圈，并且在中心具有安装孔，主印刷电路板，其可以联接到安装孔，并且可以垂直地布置在线圈印刷电路板的上表面处，并且可以电连接到参考图案线圈和感测图案线圈。

16. 发明授权

US07924103B2 Inductive proximity switch and method for its operation 有权
标题翻译：感应式接近开关及其操作方法
公开(公告)号：US07924103B2
公开(公告)日：2011-04-12
申请号：US11782846
申请日：2007-07-25
申请人： Thomas Kuehn
发明人： Thomas Kuehn
IPC分类号： H03K17/95 , H03B5/04 , G01B7/14
CPC分类号： H03K17/9545 , H03K17/9547
摘要： The present invention relates to an inductive proximity switch with an oscillator having a resonant circuit and an amplifier and with an evaluating and control device for evaluating an impedance of the resonant circuit and for outputting a switching signal. According to the invention, the proximity switch is characterized in that a frequency measuring device is provided for measuring the oscillation frequency of the oscillator and for eliminating ambiguities of the evaluation result of the evaluating and control device. The invention also relates to a method for operating an inductive proximity switch.
摘要翻译：本发明涉及具有振荡器的电感式接近开关，该振荡器具有谐振电路和放大器，并且具有用于评估谐振电路的阻抗并用于输出开关信号的评估和控制装置。根据本发明，接近开关的特征在于，提供用于测量振荡器的振荡频率并消除评估和控制装置的评估结果的不确定性的频率测量装置。本发明还涉及一种用于操作电感式接近开关的方法。

17. 发明申请

US20080024234A1 INDUCTIVE PROXIMITY SWITCH AND METHOD FOR ITS OPERATION 有权
标题翻译：电感式接近开关及其运行方法
公开(公告)号：US20080024234A1
公开(公告)日：2008-01-31
申请号：US11782846
申请日：2007-07-25
申请人： Thomas Kuehn
发明人： Thomas Kuehn
IPC分类号： G05D1/00
CPC分类号： H03K17/9545 , H03K17/9547
摘要： The present invention relates to an inductive proximity switch with an oscillator having a resonant circuit and an amplifier and with an evaluating and control device for evaluating an impedance of the resonant circuit and for outputting a switching signal. According to the invention, the proximity switch is characterized in that a frequency measuring device is provided for measuring the oscillation frequency of the oscillator and for eliminating ambiguities of the evaluation result of the evaluating and control device. The invention also relates to a method for operating an inductive proximity switch.
摘要翻译：本发明涉及具有振荡器的电感式接近开关，该振荡器具有谐振电路和放大器，并且具有用于评估谐振电路的阻抗并用于输出开关信号的评估和控制装置。根据本发明，接近开关的特征在于，提供用于测量振荡器的振荡频率并消除评估和控制装置的评估结果的不确定性的频率测量装置。本发明还涉及一种用于操作电感式接近开关的方法。

18. 发明申请

US20010038291A1 Inductive or capacitive detector 有权
标题翻译：感应或电容检测器
公开(公告)号：US20010038291A1
公开(公告)日：2001-11-08
申请号：US09846242
申请日：2001-05-02
申请人： Schneider Electric Industries SA
发明人： Christian Charneau , Christophe Guichard
IPC分类号： G01R027/26
CPC分类号： H03K17/9545 , H03K17/955
摘要： A proximity detector comprising a reference oscillator and a measurement oscillator the frequency of which depends on the proximity of an object, particularly a metal object. A detection counter value A, which is controlled by the frequency F of the measurement oscillator 10, is compared to a set point counter value B to create the output signal. The set point counter value B0, which is determined during the calibration operation, is corrected by a quantity C that depends mainly on the difference of the measured temperature null compared to the calibration temperature null0. Application to the detection of ferrous or nonferrous objects by universal or selective inductive detectors or capacitive detectors.
摘要翻译：一种接近检测器，包括参考振荡器和测量振荡器，其频率取决于物体，特别是金属物体的接近度。将由测量振荡器10的频率F控制的检测计数器值A与设定点计数器值B进行比较，以产生输出信号。在校准操作期间确定的设定点计数器值B0由主要取决于测量温度θ与校准温度θ0的差的量C来校正。通过通用或选择性感应检测器或电容式检测器检测黑色或有色物体的应用。

19. 发明授权

US4873494A Inductive loop presence detector with cross talk filter 失效
标题翻译：具有串扰滤波器的感应环存在检测器
公开(公告)号：US4873494A
公开(公告)日：1989-10-10
申请号：US589250
申请日：1984-03-13
申请人： Brian C. Jefferis
发明人： Brian C. Jefferis
IPC分类号： G01V3/10 , G08G1/042 , H03K17/95
CPC分类号： H03K17/9545 , G01V3/101 , G08G1/042
摘要： An inductive loop presence detector, more especially a vehicle detector, including a loop oscillator having an inductive loop connected as a frequency determining element of the oscillator, which inductive loop may be buried in a roadway to sense the presence of vehicles, and sensing circuitry to detect changes in the loop oscillator frequency due to vehicle movements in the vicinity of the loop, with a filter network inserted between the output of the loop oscillator and the sensing circuitry to improve performance when cross-talk occurs due to mutual interference between a number of inductive loop detectors forming part of a total installation. The filter network can be a phase-locked loop incorporating a low pass filter to attenuate high frequency components due to cross-talk.
摘要翻译：一种感应回路存在检测器，更具体地说是一种车辆检测器，其包括具有作为振荡器的频率确定元件连接的感应回路的环路振荡器，该感应回路可以被埋在道路中以感测车辆的存在，以及感测电路检测由于环路附近的车辆运动引起的环路振荡器频率的变化，其中滤波器网络插入在环形振荡器的输出端与感测电路之间，以在串扰发生时由于多个电感式环路检测器构成整体安装的一部分。滤波器网络可以是包含低通滤波器的锁相环，以便由于串扰而衰减高频分量。

20. 发明公开

US20230216496A1 PROXIMITY SENSOR WITH INTERNAL TEMPERATURE SENSOR AND METHOD OF OPERATING THE SAME 审中-公开
公开(公告)号：US20230216496A1
公开(公告)日：2023-07-06
申请号：US18090283
申请日：2022-12-28
申请人： ABOV Semiconductor Co., Ltd.
发明人： Young Jin SEO , Seo Han LEE , Yoon Ki KIM , Yeong Jin MUN
IPC分类号： H03K17/95 , G01D3/036
CPC分类号： H03K17/9545 , G01D3/0365
摘要： A proximity sensor is provided with multiple channels and a proximity sensor chip (IC) connected to the multiple channels through a sensing line. The proximity sensor chip (IC) includes an internal temperature sensor, senses a first sensing value through the multiple channels, senses a second sensing value through the internal temperature sensor, and compensates the first sensing value through addition or subtraction of the second sensing value with respect to the first sensing value. The internal temperature sensor includes: a clock signal generator including a first oscillator and generating first clock signals variable according to temperature characteristics; and a temperature compensator generating second clock signals according to a setting condition corresponding to the first clock signals generated from the clock signal generator and outputting the second sensing value by counting the second clock signals through a second oscillator generating reference clock signals independent of temperature change.

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