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公开(公告)号：US20180069737A1
公开(公告)日：2018-03-08
申请号：US15806648
申请日：2017-11-08
Applicant: Renesas Electronics Corporation
Inventor： Yuji SHIMIZU , Akane HIROSHIMA , Yutaka ONO
CPC classification number: H04L27/2053 , H04L7/0008 , H04L27/20
Abstract: A signal converter 100 includes, for at least two-phase signals detected by a resolver excited by a carrier signal having a carrier frequency fc, a first phase shifter 101 that shifts a phase of a first phase signal of the resolver with a pole at a frequency f1 lower than the carrier frequency fc, a second phase shifter 102 that shifts a phase of a second phase signal of the resolver with a pole at a frequency f2 higher than the carrier frequency fc, and a synthesizer 103 that combines the phase-shifted first phase signal with the phase-shifted second phase signal.
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公开(公告)号：US20180324011A1
公开(公告)日：2018-11-08
申请号：US16034508
申请日：2018-07-13
Applicant: Renesas Electronics Corporation
Inventor： Yuji SHIMIZU , Akane HIROSHIMA , Yutaka ONO
CPC classification number: H04L27/2053 , H04L7/0008 , H04L27/20
Abstract: A signal converter 100 includes, for at least two-phase signals detected by a resolver excited by a carrier signal having a carrier frequency fc, a first phase shifter 101 that shifts a phase of a first phase signal of the resolver with a pole at a frequency f1 lower than the carrier frequency fc, a second phase shifter 102 that shifts a phase of a second phase signal of the resolver with a pole at a frequency f2 higher than the carrier frequency fc, and a synthesizer 103 that combines the phase-shifted first phase signal with the phase-shifted second phase signal.
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公开(公告)号：US20170317682A1
公开(公告)日：2017-11-02
申请号：US15497648
申请日：2017-04-26
Applicant: RENESAS ELECTRONICS CORPORATION
Inventor： Yuji SHIMIZU , Akane HIROSHIMA , Yutaka ONO
Abstract: A control apparatus includes, for at least two-phase signals detected from a resolver excited by a carrier signal having a carrier frequency fc, a first phase shifter that shifts a phase of a first phase signal of the resolver with a pole at a frequency f1 lower than the carrier frequency fc, a second phase shifter that shifts a phase of a second phase signal of the resolver with a pole at a frequency f2 higher than the carrier frequency fc, a signal generator that generates a correction signal for canceling out an error component of the carrier signal, and a synthesizer that synthesizes the phase-shifted first phase signal, the phase-shifted second signal, and the correction signal for canceling out the error component, in order to create a phase-modulated signal that is the carrier signal being modulated at a rotation angle of a rotor of the resolver.
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公开(公告)号：US20170041168A1
公开(公告)日：2017-02-09
申请号：US15159840
申请日：2016-05-20
Applicant: Renesas Electronics Corporation
Inventor： Yuji SHIMIZU , Akane HIROSHIMA , Yutaka ONO
IPC: H04L27/20
CPC classification number: H04L27/2053 , H04L7/0008 , H04L27/20
Abstract: A signal converter 100 includes, for at least two-phase signals detected by a resolver excited by a carrier signal having a carrier frequency fc, a first phase shifter 101 that shifts a phase of a first phase signal of the resolver with a pole at a frequency f1 lower than the carrier frequency fc, a second phase shifter 102 that shifts a phase of a second phase signal of the resolver with a pole at a frequency f2 higher than the carrier frequency fc, and a synthesizer 103 that combines the phase-shifted first phase signal with the phase-shifted second phase signal.
Abstract translation: 对于由具有载波频率fc的载波信号激励的解析器所检测到的至少两相信号，信号转换器100包括：第一移相器101，用一个极点移位旋转变压器的第一相位信号的相位， 频率f1低于载波频率fc;第二移相器102，其以比载波频率fc高的频率f2的极点移位旋转变压器的第二相位信号的相位，以及合成器103，其将相移 具有相移第二相位信号的第一相位信号。
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公开(公告)号：US20190280537A1
公开(公告)日：2019-09-12
申请号：US16281928
申请日：2019-02-21
Applicant: RENESAS ELECTRONICS CORPORATION
Inventor： Yoshifumi IKENAGA , Akane HIROSHIMA
Abstract: A synthesis circuit synthesizes detection signals from a plurality of detection coils to generate a synthesized detection signal indicating a sine component of a rotation angle of a rotor. In this regard, the detection coils which are synthesis targets when the synthesis circuit generates the synthesized detection signal include a detection coil of a salient pole installed at a first electrical angle based on a first pole of the rotor and detection coils of salient poles installed at a second electrical angle different from the first electrical angle based on the first pole, and do not include detection coils installed at the first electrical angle based on a second pole.
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Patent Agency Ranking
公开(公告)号：US20180344258A1
公开(公告)日：2018-12-06
申请号：US16054321
申请日：2018-08-03
Applicant: Renesas Electronics Corporation
Inventor： Akane HIROSHIMA , Yuji SHIMIZU
CPC classification number: A61B5/7225 , A61B5/02433 , A61B5/6826 , A61B2560/0209
Abstract: It is possible to reduce power consumption of a pulsimeter while suppressing a degradation in an accuracy of measuring pulse. A pulsimeter (1) includes a light emitter (10), a photodetector (12), an AD converter (14), a frequency analyzing unit (15), and an adjusting unit (17). The light emitter (10) emits light to a blood vessel of a measurement target. The photodetector (12) detects light emitted by the light emitter (10) via the blood vessel. The AD converter (14) analog/digital converts an output signal of the photodetector (12). The frequency analyzing unit (15) frequency-analyzes data converted by the AD converter (14). The adjusting unit (17) adjusts an amount of light emitted by the light emitter (10) based on the analysis result by the frequency analyzing unit (15).
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公开(公告)号：US20160331250A1
公开(公告)日：2016-11-17
申请号：US15094375
申请日：2016-04-08
Applicant: Renesas Electronics Corporation
Inventor： Akane HIROSHIMA , Yuji SHIMIZU
IPC: A61B5/024 , A61B5/00 , A61B5/0255
CPC classification number: A61B5/02427 , A61B5/7207 , A61B5/7257 , A61B2560/0209
Abstract: It is possible to reduce power consumption of a pulsimeter. A pulsimeter 2 includes a light emitter 10, a photodetector 12, a sample and hold circuit 20, an AD converter 14, and a time measurement unit 22. The light emitter 10 periodically repeats a light emission for a predetermined period of time to a blood vessel of a measurement target. The photodetector 12 detects light emitted by the light emitter 10 via the blood vessel. The sample and hold circuit 20 takes and holds an output voltage of the photodetector 12. The AD converter 14 analog/digital converts an output voltage of the sample and hold circuit 20. The time measurement unit 22 measures a time for an output of the sample and hold circuit to be constant. A light emitting time of the light emitter is set by the time measured by the time measurement unit 22.
Abstract translation: 可以降低脉搏计的功耗。 脉搏计2包括光发射器10，光电检测器12，采样和保持电路20，AD转换器14和时间测量单元22.光发射器10周期性地将一定时间的发光重复到血液 测量目标的容器。 光检测器12经由血管检测由发光体10发出的光。 采样和保持电路20取得并保持光电检测器12的输出电压.AD转换器14模拟/数字转换采样和保持电路20的输出电压。时间测量单元22测量样本的输出时间 并保持电路恒定。 光发射器的发光时间由时间测量单元22测量的时间设定。
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公开(公告)号：US20170250701A1
公开(公告)日：2017-08-31
申请号：US15441868
申请日：2017-02-24
Applicant: RENESAS ELECTRONICS CORPORATION
Inventor： Akane HIROSHIMA , Yuji SHIMIZU , Yutaka ONO
IPC: H03M1/48 , H02K11/225
CPC classification number: H03M1/485 , G01B7/30 , G01D5/2053 , H02K11/225 , H02P6/16 , H03M1/201
Abstract: The present invention provides a signal processor that improves a resolution of a phase detection without increasing a clock frequency of a controller or decreasing a frequency of an excitation signal. A signal processor 10 includes a comparator 11 that compares a signal obtained by phase modulating a carrier frequency at a rotor rotation angle of a resolver with a dither signal.
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公开(公告)号：US20170222850A1
公开(公告)日：2017-08-03
申请号：US15484285
申请日：2017-04-11
Applicant: Renesas Electronics Corporation
Inventor： Yuji SHIMIZU , Akane HIROSHIMA , Yutaka ONO
CPC classification number: H04L27/2053 , H04L7/0008 , H04L27/20
Abstract: A signal converter 100 includes, for at least two-phase signals detected by a resolver excited by a carrier signal having a carrier frequency fc, a first phase shifter 101 that shifts a phase of a first phase signal of the resolver with a pole at a frequency f1 lower than the carrier frequency fc, a second phase shifter 102 that shifts a phase of a second phase signal of the resolver with a pole at a frequency f2 higher than the carrier frequency fc, and a synthesizer 103 that combines the phase-shifted first phase signal with the phase-shifted second phase signal.
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公开(公告)号：US20160331329A1
公开(公告)日：2016-11-17
申请号：US15094345
申请日：2016-04-08
Applicant: Renesas Electronics Corporation
Inventor： Akane HIROSHIMA , Yuji SHIMIZU
CPC classification number: A61B5/7225 , A61B5/02433 , A61B5/6826 , A61B2560/0209
Abstract: It is possible to reduce power consumption of a pulsimeter while suppressing a degradation in an accuracy of measuring pulse. A pulsimeter 1 includes a light emitter 10, a photodetector 12, an AD converter 14, a frequency analyzing unit 15, and an adjusting unit 17. The light emitter 10 emits light to a blood vessel of a measurement target. The photodetector 12 detects light emitted by the light emitter 10 via the blood vessel. The AD converter 14 analog/digital converts an output signal of the photodetector 12. The frequency analyzing unit 15 frequency-analyzes data converted by the AD converter 14. The adjusting unit 17 adjusts an amount of light emitted by the light emitter 10 based on the analysis result by the frequency analyzing unit 15.
Abstract translation: 可以在抑制测量脉冲的精度降低的同时降低脉搏器的功率消耗。 脉搏计1包括光发射器10，光电检测器12，AD转换器14，频率分析单元15和调节单元17.光发射器10向测量对象的血管发光。 光检测器12经由血管检测由发光体10发出的光。 AD转换器14对光电检测器12的输出信号进行模拟/数字转换。频率分析单元15对由AD转换器14转换的数据进行频率分析。调节单元17基于光转换器14调整由发光器10发射的光量。 由频率分析单元15分析结果。
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