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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：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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5.发明申请公开(公告)号：US20160235371A1
公开(公告)日：2016-08-18
申请号：US14956593
申请日：2015-12-02
Applicant: Renesas Electronics Corporation
Inventor： Akane HIROSHIMA , Naoya TOKIMOTO , Yuji SHIMIZU
CPC classification number: A61B5/7257 , A61B5/02416 , A61B5/6826 , A61B5/7225 , A61B5/7278 , G06F19/3481
Abstract: An object of the invention is to shorten a measurement time while preventing deterioration in resolution during frequency analysis and preventing a reduction in measurement range. A pulsimeter (1) includes a pulse data acquisition unit (100), a replication unit (16), and a frequency analysis unit (17). The replication unit (16) generates, when the number of pieces of acquired sampling data for a pulse rate calculation reaches n, m pieces of sampling data using the n pieces of sampling data and data obtained by replicating n-th sampling data. The frequency analysis unit (17) performs a frequency analysis on the m pieces of sampling data.
Abstract translation: 本发明的目的是缩短测量时间，同时防止频率分析期间的分辨率的劣化并且防止测量范围的减小。 脉搏计（1）包括脉冲数据获取单元（100），复制单元（16）和频率分析单元（17）。 复制单元（16）在采集脉冲率计算的采集数据的数量达到n时，生成使用n个采样数据的m个采样数据和通过复制第n采样数据而获得的数据。 频率分析单元（17）对m个采样数据进行频率分析。
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Patent Agency Ranking
公开(公告)号：US20210105162A1
公开(公告)日：2021-04-08
申请号：US17018208
申请日：2020-09-11
Applicant: RENESAS ELECTRONICS CORPORATION
Inventor： Yoshifumi IKENAGA , Yuji SHIMIZU , Akane ABE
Abstract: To provide a correction method of resolver correction device and resolver correction device that can reduce rotation angle (the rotation speed) detection error caused by resolver. An excitation signal supply circuit supplies an excitation signal of an excitation frequency to the resolver during a normal operation, for supplying the excitation signals of a plurality of frequencies including the excitation frequency to the first phase shifter or the second phase shifter during a calibration operation. A shift amount searching circuit searches the first shift amount setting value for each frequency of the excitation signal such that the first shift amount becomes 45 degrees, and the second shift amount setting value for each frequency of the excitation signal such that the second shift amount becomes 135 degrees, while referring to the detection result of the phase difference detection circuit during the calibration operation, and stores in the correction table.
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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：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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