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公开(公告)号：EP3171615B1
公开(公告)日：2019-07-03
申请号：EP15821664.8
申请日：2015-07-07
发明人： DEAK, James Geza , GUO, Haiping , XUE, Songsheng
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公开(公告)号：EP3171615A1
公开(公告)日：2017-05-24
申请号：EP15821664.8
申请日：2015-07-07
发明人： DEAK, James Geza , GUO, Haiping , XUE, Songsheng
IPC分类号： H04R25/00
CPC分类号： H04R25/554 , G01R33/098 , H04R25/00 , H04R25/305 , 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.
摘要翻译： 本发明公开了一种TMR近场磁通信系统，用于检测近场磁通信系统产生的AC和DC磁场，并将AC和DC磁场信号输入到与输入信号相同的音频电声中 它们。 该音频电声装置包括助听器，家庭娱乐系统的耳机，具有嵌入式听力装置的公共听觉回路系统等.TMR近场磁通信系统包括用于检测AC和DC的一个或多个TMR传感器桥 磁场信号，包含用于分离TMR传感器输出的AC和DC信号的分量的滤波器的模拟信号电路，用于放大AC电信号的放大器以及用于传送AC 电信号到音频电声器件。 TMR传感器可以是线性或非线性TMR传感器，并且TMR传感器被设计为在特定DC磁场中具有最佳信噪比。
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公开(公告)号：EP2950060A1
公开(公告)日：2015-12-02
申请号：EP14742929.4
申请日：2014-01-24
发明人： DEAK, James Geza , XUE, Songsheng
IPC分类号： G01F23/74
摘要： A digital liquid-level sensor (100, 200) comprising a nonmagnetic tube (1), a float (2) provided outside the nonmagnetic tube (1) and capable of moving along the nonmagnetic tube in the axial direction (1), and a permanent magnet (6) fixed on the float (2). The nonmagnetic tube (1) further comprises a switch unit (3) and an encoding unit (4). The switch unit (3) comprises at least one tunneling magnetoresistance switch (s0-s7), which is turned on or turned off under the influence of the magnetic field produced by the permanent magnet (6); and the encoding unit (4) comprises at least one encoder (15), that receives an on/off signal from the tunneling magnetoresistance switch unit (s0-s7) and outputs a digital signal indicating the position of the float (2). The digital liquid-level sensor has small size, low cost, low power consumption, high reliability, high sensitivity, high resolution, long service life, and a good immunity to environmental interference. It additionally can directly output the fluid level as a digital signal.
摘要翻译： 一种数字液位传感器（100,200），包括非磁性管（1），设置在所述非磁性管（1）外部并能够沿着所述轴向（1）沿着所述非磁性管移动的浮子（2），以及 固定在浮子（2）上的永磁体（6）。 非磁性管（1）还包括开关单元（3）和编码单元（4）。 开关单元（3）包括至少一个在由永磁体（6）产生的磁场的影响下导通或截止的隧穿磁阻开关（s0-s7）。 编码单元（4）包括从隧道磁阻开关单元（s0-s7）接收开/关信号的至少一个编码器（15），并输出指示浮子位置的数字信号（2）。 数字液位传感器尺寸小，成本低，功耗低，可靠性高，灵敏度高，分辨率高，使用寿命长，对环境干扰的良好抗扰性。 它还可以直接输出液位作为数字信号。
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公开(公告)号：EP2801834A1
公开(公告)日：2014-11-12
申请号：EP12863825.1
申请日：2012-10-30
发明人： HAN, Liansheng , BAI, Jianmin , LI, Wei , XUE, Songsheng
IPC分类号： G01R19/32
CPC分类号： G01R19/0092 , G01R15/205 , G01R17/10 , G01R19/32 , G01R33/06 , G01R33/098
摘要： This patent discloses a current sensor comprising a sensor bridge (14), which consists of several magnetic tunnel junction (MTJ) elements (R11, R12, R21, R22), a MTJ temperature compensation resistor (16), and a current lead (20), which are integrated onto the same chip. The current lead (20) is positioned close to the sensor bridge (14), and it is used to carry the test current (19). A permanent magnet (17) is arranged at the periphery of the MTJ temperature compensation resistor (16). The permanent magnet (17) rigidly aligns the magnetization direction (7) of the free layer of the MTJ temperature compensation resistor (16) anti-parallel to the magnetization direction (8) of a pinning layer; so that the MTJ temperature compensation resistor (16) remains in a high resistance state providing a resistance value that changes as a function of temperature. The sensor bridge (14) is connected in series with the MTJ temperature compensation resistor (16) in order to temperature compensate the sensor bridge (14). A magnetic field (21) generated by the test current (19) produces an output voltage at the output of the temperature compensated sensor bridge that is proportional to the test current value. As a result of this temperature compensated structure, the current sensor has the advantages of high sensitivity, wide linear range, low power consumption, and excellent temperature stability.
摘要翻译： 该专利公开了一种电流传感器，其包括由多个磁性隧道结（MTJ）元件（R11，R12，R21，R22），MTJ温度补偿电阻器（16）和电流引线（20）组成的传感器桥 ），它们集成在同一芯片上。 电流引线（20）位于传感器电桥（14）附近，并用于承载测试电流（19）。 MTJ温度补偿电阻器（16）的外围设置有永磁体（17）。 永磁体（17）使MTJ温度补偿电阻器（16）的自由层的磁化方向（7）与钉扎层的磁化方向（8）反平行地刚性对准; 使得MTJ温度补偿电阻器（16）保持处于高电阻状态，从而提供随温度变化的电阻值。 传感器电桥（14）与MTJ温度补偿电阻器（16）串联以便温度补偿传感器电桥（14）。 由测试电流（19）产生的磁场（21）在温度补偿传感器桥的输出处产生与测试电流值成比例的输出电压。 由于采用这种温度补偿结构，电流传感器具有灵敏度高，线性范围宽，功耗低，温度稳定性好等优点。
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35.发明公开INDIVIDUALLY PACKAGED MAGNETORESISTANCE ANGLE SENSOR 审中-公开EINZELN VERPACKTER MAGNETORESISTIVER WINKELSENSOR
公开(公告)号：EP2682772A1
公开(公告)日：2014-01-08
申请号：EP12751985.8
申请日：2012-03-02
发明人： DEAK, James Geza , SHEN, Weifeng , WANG, Jianguo , ZHANG, Xiaojun , LEI, Xiaofeng , JIN, Insik , XUE, Songsheng
CPC分类号： G01R33/098 , B82Y25/00 , G01B7/30 , G01D5/145 , G01R33/093 , H01L43/08
摘要： A single package magnetoresistive angle sensor for use in measuring rotation angle of a magnet is disclosed. The magnetoresistive angle sensor comprises a pair of magnetoresistive sensor chips, wherein one of the chips is rotated by 180-degree rotation relative to the other. The magnetoresistive sensor chips are attached to a standard semiconductor package lead frame to form a single-axis push-pull full-bridge sensor. Each of the magnetoresistive sensor chips comprises a pair of magneto resistance sensor arms. Each magnetoresistive sensor arm comprises one or more GMR or MTJ sensor elements. The GMR of MTR sensor elements utilize a pined layer. The element blocks of the magnetoresistive sensor electrically are interconnected and connected to the package leads by wirebonding. The magnetoresistive angle sensor can be packaged into various standard semiconductor package designs. Also, provided is a dual-axis push-pull full-bridge magnetoresistive angle sensor comprised of two pairs of magnetoresistive sensor chips.
摘要翻译： 公开了一种用于测量磁体旋转角度的单封装磁阻角传感器。 磁阻角传感器包括一对磁阻传感器芯片，其中一个芯片相对于另一个旋转180度旋转。 磁阻传感器芯片附接到标准半导体封装引线框架以形成单轴推挽全桥传感器。 每个磁阻传感器芯片包括一对磁阻传感器臂。 每个磁阻传感器臂包括一个或多个GMR或MTJ传感器元件。 MTR传感器元件的GMR利用了一个打浆层。 电阻传感器的元件块电连接并通过引线接合连接到封装引线。 磁阻角传感器可以封装成各种标准的半导体封装设计。 此外，提供了由两对磁阻传感器芯片组成的双轴推挽全桥磁阻角度传感器。
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公开(公告)号：EP2682771A1
公开(公告)日：2014-01-08
申请号：EP12751762.1
申请日：2012-03-02
发明人： DEAK, James Geza , JIN, Insik , SHEN, Weifeng , WANG, Jianguo , XUE, Songsheng , LEI, Xiaofeng , ZHANG, Xiaojun , LI, Dongfeng
IPC分类号： G01R33/09
CPC分类号： H01L25/04 , G01R33/093 , G01R33/098 , H01L43/02 , H01L2224/48091 , H01L2224/48137 , H01L2224/48247 , H01L2224/48464 , H01L2924/00014
摘要： A multi-chip push-pull magnetoresistive bridge sensor utilizing magnetic tunnel junctions is disclosed. The magnetoresistive bridge sensor is composed of a two or more magnetic tunnel junction sensor chips placed in a semiconductor package. For each sensing axis parallel to the surface of the semiconductor package, the sensor chips are aligned with their reference directions in opposition to each other. The sensor chips are then interconnected as a push-pull half-bridge or Wheatstone bridge using wire bonding. The chips are wire-bonded to any of various standard semiconductor lead frames and packaged in inexpensive standard semiconductor packages.
摘要翻译： 公开了一种利用磁隧道结的多芯片推挽磁阻桥式传感器。 磁阻桥式传感器由放置在半导体封装中的两个或多个磁性隧道结传感器芯片组成。 对于平行于半导体封装的表面的每个感测轴，传感器芯片彼此相对对准其参考方向。 然后将传感器芯片作为推挽半桥或使用引线接合的惠斯通电桥进行互连。 这些芯片被引线接合到各种标准半导体引线框架中的任何一个并且封装在廉价的标准半导体封装中。
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公开(公告)号：EP4455686A1
公开(公告)日：2024-10-30
申请号：EP22909596.3
申请日：2022-11-17
发明人： LIU, Mingfeng , SHI, Ran , XUE, Songsheng
IPC分类号： G01R19/00
摘要： A stepped copper-bar current measurement apparatus. The apparatus comprises: a circuit board (3), a magnetic induction module (2) and a stepped copper bar (1), wherein the magnetic induction module (2) comprises a first magnetic induction unit (211) and a second magnetic induction unit (212); the side of the stepped copper bar (1) facing the magnetic induction module (2) comprises a first step (11) and a second step (12), which are different from each other; the first magnetic induction unit (211) is located above the first step (11), and the second magnetic induction unit (212) is located above the second step (12); a current to be measured flows through the cross section perpendicular to the stepped copper bar (1); the first magnetic induction unit (211) and the second magnetic induction unit (212) induct, in a differential manner, a differential-mode magnetic field which is generated by said current flowing through the stepped copper bar (1), and generate differential voltage signals and output the differential voltage signals. The apparatus has the characteristics of having an adjustable common-mode magnetic field working point, being applicable to various magnetic induction units, having adjustable sensitivity, realizing electrical isolation between an input and an output, having a strong resistance to common-mode interference, being able to measure alternating currents and direct currents, and having a large current.
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公开(公告)号：EP4421511A1
公开(公告)日：2024-08-28
申请号：EP22882505.5
申请日：2022-09-14
发明人： GUO, Haiping , SONG, Chen , CHEN, Ye , SHEN, Weifeng , XUE, Songsheng
摘要： Embodiments of the present invention disclose a magnetic apparatus. The apparatus comprises a magnetic field generation portion, a magnetic sensor portion and a signal processing portion. The magnetic sensor portion comprises a first magnetic sensor arranged at a first position, a second magnetic sensor arranged at a second position and a third magnetic sensor arranged at a third position. The first position, the second position and the third position are on the same horizontal line and are arranged at equal intervals. Magnetic fields generated by the magnetic field generation portion at the three different positions are different. The signal processing portion comprises a first differential circuit, a second differential circuit, and a third differential circuit. The first differential circuit generates a first difference between the first signal that is sensed and output by the first magnetic sensor and the second signal sensed and output by the second magnetic sensor. The second differential circuit generates a second difference between the second signal and the third signal sensed and output by the third magnetic sensor. The third differential circuit generates a differential measurement signal on the basis of the difference between the first difference and the second difference. The magnetic sensor apparatus can eliminate the impact of a magnetic interfering field to improve the current detection precision.
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公开(公告)号：EP4130758A1
公开(公告)日：2023-02-08
申请号：EP21775248.4
申请日：2021-03-24
发明人： QU, Pin , XUE, Songsheng , WANG, Huijuan , LIU, Zongxin
摘要： A magnetic probe-based current measurement device and measurement method is disclosed. The device comprises: a conductor (100) for a current under test, a magnetic probe, a magnetic bias structure (300, 300a, 300b), and a programmable chip (400). A conductor (100) has a first axis (01), a second axis (02), and a third axis (03). The conductor (100) is provided with through holes (101, 101a, 101b, 101c). The direction of the through holes (101, 101a, 101b, 101c) are parallel to the third axis (03). Vertical projections of the through holes (101, 101a, 101b, 101c) on a first cross section are symmetric about the first axis. At least one of the through holes (101, 101a, 101b, 101c) has a center position located on the first axis (01). And/or every pair of the through holes (101, 101a, 101b, 101c) have center positions that are symmetric about the first axis (01). The magnetic probe is provided within the through holes (101, 101a, 101b, 101c), and is electrically connected to the programmable chip (400). A sensitive center position of the magnetic probe is located on the first cross section. A vertical projection of the magnetic probe on the first cross section is symmetric about the first axis (01). The magnetic bias structure (300, 300a, 300b) is provided within the through holes (101, 101a, 101b, 101c). A magnetization direction (301) of the magnetic bias structure (300, 300a, 300b) is perpendicular to a sensitive direction (2011) of the magnetic probe. The device is small size and has the advantages of high measurement accuracy, and high adaptability.
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公开(公告)号：EP4109048A1
公开(公告)日：2022-12-28
申请号：EP21757028.2
申请日：2021-02-09
发明人： GUO, Haiping , LI, Haochen , SHEN, Weifeng , XUE, Songsheng
摘要： Disclosed is linear displacement absolute position encoder (10) used for measuring displacement of a tested apparatus. The linear displacement absolute position encoder (10) comprising a base (100), a magnetoresistive sensor array (300), an encoding strip (200), and a back magnet. The encoding strip (200) is fixed on the base (100) and extends in the direction of a rail of the tested apparatus. The encoding strip is a magnetic material block having recess and protrusion for identifying encoding information of different positions. The magnetoresistive sensor array (300) is arranged between the encoding strip (200) and the back magnet in a non-contact manner. The back magnet is used for generating a non-uniform magnetic field around the encoding strip (300) so as to magnetize the encoding strip (200). The magnetoresistive sensor array (300) is used for acquiring the position encoding information of the encoding strip (200) by detecting magnetic field information of the encoding strip (200). The encoder (10) is low cost and can monitor large distances
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