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公开(公告)号：EP3159854A4
公开(公告)日：2018-02-28
申请号：EP15811990
申请日：2015-06-12
发明人： DEAK JAMES GEZA , GUO HAIPING
IPC分类号： G07D5/08
CPC分类号： G07D5/08
摘要： A coin detection system comprises an excitation coil (3), a radial magnetic gradiometer (5), an axial magnetic gradiometer (6), a signal excitation source (1), a drive circuit (2), an analog front-end circuit (7) and a processor (8). After the excitation coil (3) is excited by the signal excitation source (1) and the drive circuit (2), the excitation coil (3) generates an excitation magnetic field (10) parallel to the axial direction of a coin (4), and under the influence of the excitation magnetic field (10), the coin (4) generates an induced magnetic field (11) through eddy currents induced in the coin (4); the radial magnetic gradiometer (5) and the axial magnetic gradiometer (6) detect the magnetic field components of the magnetic field (11) in the radial direction and the axial direction of the coin (4), and the detected signal is transmitted to the analog front-end circuit (7) for amplification; the processor (8) processes and then outputs the amplified signal transmitted by the analog front-end circuit (7), and the material, design, denomination, etc. of the coin (4) are obtained according to the amplitude, phase, and other information contained in the output signal.
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公开(公告)号：EP3133291A4
公开(公告)日：2018-01-10
申请号：EP15780557
申请日：2015-04-13
发明人： GUO HAIPING , LI DAN , XUE SONGSHENG , DEAK JAMES GEZA
IPC分类号： F04D27/00
CPC分类号： F04D27/00 , F04D25/0666 , G01P3/487 , G01R33/091 , H01L25/16 , H01L43/02 , H01L43/08 , H01L43/10 , H01L2224/48091 , H01L2224/48145 , H01L2924/00014 , H01L2924/00012
摘要： A direct-current fan control chip comprises a magnetoresistive sensor (4), a controller (5), a driver (6) and a substrate (7). The magnetoresistive sensor (4), the controller (5) and the driver (6) are integrated on the substrate (7). The sensing direction of the magnetoresistive sensor (4) is perpendicular to or parallel to the surface of the direct-current fan control chip. The magnetoresistive sensor (4) provides the controller (5) with a rotor position signal, a rotor speed signal, and rotor a rotation direction signal for the controller. The controller (5) outputs a control signal to the driver (6) according to the received signals. After receiving the control signals, the driver (6) outputs a drive signal. This control chip has the advantages of good temperature stability, good frequency response and so on.
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公开(公告)号：EP3122070A4
公开(公告)日：2017-08-30
申请号：EP15765310
申请日：2015-03-19
发明人： ZHOU ZHIMIN , DEAK JAMES GEZA , GUO HAIPING
CPC分类号： H04R15/00 , G01R33/09 , G01R33/091 , H04B5/0031 , H04R23/00 , H04R29/001 , H04R2499/11 , Y02D70/00 , Y02D70/12 , Y02D70/122 , Y02D70/166 , Y02D70/42
摘要： A magnetoresistive audio pickup comprises an audio detection circuit. The audio detection circuit comprises at least one linear magnetoresistive sensor, a coupling capacitance, an AC amplifier, and a signal processing circuit comprising an additional amplifier. The linear magnetoresistive sensor comprises at least one single-axis linear magnetoresistive sensor unit. The linear magnetoresistive sensors are placed in a measurement plane above a speaker's voice coil, the signal output end of each single-axis linear magnetoresistive sensor unit is capacitively coupled to the AC amplifier which provides AC signals through electrical connection to the amplifier, these signals are combined within the signal processing unit into an audio signal, and the audio signal is output from the circuit; each single-axis linear sensor unit is located in the linear response area of the measurement plane. The present invention detects a speaker's audio signals via magnetic field coupling between a speaker and a linear magnetoresistive sensor. The magnetoresistive audio pickup's structure is simple and it also provides low power consumption.
摘要翻译： 磁阻式音频拾取器包括音频检测电路。 音频检测电路包括至少一个线性磁阻传感器，耦合电容，AC放大器以及包括附加放大器的信号处理电路。 线性磁阻传感器包括至少一个单轴线性磁阻传感器单元。 线性磁阻传感器放置在扬声器音圈上方的测量平面中，每个单轴线性磁阻传感器单元的信号输出端与通过电连接到放大器提供交流信号的交流放大器电容耦合，这些信号是 在信号处理单元内组合成音频信号，并且音频信号从电路输出; 每个单轴线性传感器单元都位于测量平面的线性响应区域内。 本发明通过扬声器和线性磁阻传感器之间的磁场耦合检测扬声器的音频信号。 磁阻式拾音器的结构简单，而且功耗低。
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公开(公告)号：EP3171615A4
公开(公告)日：2018-05-02
申请号：EP15821664
申请日：2015-07-07
发明人： DEAK JAMES GEZA , GUO HAIPING , XUE SONGSHENG
CPC分类号： H04R25/554 , G01R33/098 , H04R25/00 , H04R25/305 , H04W4/008 , H04W4/80
摘要： This invention discloses a TMR near-field magnetic communication system, which is used for detecting AC and DC magnetic fields generated by a near-field magnetic communication system, and inputting AC and DC magnetic field signal to an audio electroacoustic taking the same as input signals thereof. The audio electroacoustic device comprises a hearing aid, an earphone of a home entertainment system, a public hearing loop system with an embedded hearing device, etc. The TMR near-field magnetic communication system comprises one or more TMR sensor bridges for detecting AC and DC magnetic field signals, an analog-signal circuit containing a filter which is used for separating components of AC and DC signals output by a TMR sensor, an amplifier which is used for amplifying an AC electrical signal, and an analog output used for transmitting the AC electrical signal to the audio electroacoustic device. The TMR sensor can be a linear or nonlinear TMR sensor, and the TMR sensor is designed to have an optimal signal to noise ratio in a specific DC magnetic field.
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5.发明公开SINGLE RELUCTANCE TMR MAGNETIC FIELD SENSOR CHIP AND CURRENCY DETECTOR MAGNETIC HEAD 审中-公开EINZELRELUKTANZ-TMR磁传感器芯片和帐单检测器磁头
公开(公告)号：EP3026451A4
公开(公告)日：2017-03-08
申请号：EP14829581
申请日：2014-07-25
发明人： DEAK JAMES GEZA , GUO HAIPING
CPC分类号： G01R33/098 , G01R33/09 , G07D7/04
摘要： A single magnetoresistor TMR magnetic field sensor chip (101) and magnetic currency detector head; the single magnetoresistor TMR magnetic field sensor chip (101) is installed above a magnetic excitation element; the sensing direction of the chip is parallel to the surface of the chip, and the direction of the magnetic excitation field generated at the chip by the magnetic excitation element is perpendicular to the surface of the chip; the chip comprises a substrate (102), a magnetic biasing structure deposited on the substrate (102), a magnetoresistive element (108), and an input/output terminal; the magnetoresistive element (108) consists of MTJs; the sensing directions of the magnetoresistive element (108) and the MTJs are the same as the sensing direction of the chip; and the direction of a bias magnetic field generated on the chip by the magnetic biasing structure is perpendicular to the sensing direction of the chip. The chip features high sensitivity, high signal-to-noise ratio, small size, high temperature stability and high reliability.
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