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公开(公告)号：US10088495B2
公开(公告)日：2018-10-02
申请号：US15114777
申请日：2014-12-25
Inventor： Keisuke Kuroda , Takeshi Mori
IPC: G01P15/125 , G01P21/00
Abstract: A capacitive physical quality detection device includes a sensor part, a control circuit, and a CV conversion circuit. The sensor part includes a movable electrode, a first fixed electrode, and a second fixed electrode. The CV conversion circuit is configured to receive a reference voltage and to output a voltage corresponding to a capacitance change. In a first time period, the control circuit applies a first signal to the first fixed electrode, and applies a second signal, which is opposite in phase to the first signal, to the second fixed electrode. In a second time period, the control circuit applies the reference voltage to the first fixed electrode and applies the second signal to the second fixed electrode.
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公开(公告)号：US10948311B2
公开(公告)日：2021-03-16
申请号：US16163184
申请日：2018-10-17
Inventor： Keisuke Kuroda , Takeshi Mori
IPC: G01C25/00 , G01C19/5614
Abstract: A sensor includes a detection element that outputs a detection signal corresponding to a physical quantity, a detection circuit that outputs a physical quantity signal corresponding to the physical quantity, first to third diagnosis circuits. The first diagnosis circuit is configured to receive a signal input to the detection circuit and a signal output from the detection circuit, to output an error signal in a case where the detection circuit is abnormal. The second diagnosis circuit is configured to input a diagnosis signal to the first diagnosis circuit. The second diagnosis circuit is configured to input, to the first diagnosis circuit, another of the signal input to the detection circuit and the signal output from the detection circuit. The third diagnosis circuit monitors whether or not the diagnosis signal is input from the second diagnosis circuit to the first diagnosis circuit.
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公开(公告)号：US12203955B2
公开(公告)日：2025-01-21
申请号：US17442300
申请日：2020-01-09
Inventor： Keisuke Kuroda , Takuya Kajiwara , Junji Nakatsuka , Masaaki Nagai
IPC: G01P21/00 , G01P15/08 , G01P15/125 , G01P15/18
Abstract: A signal processing device includes detection circuitry and correction circuitry. The detection circuitry includes a first detection unit and a second detection unit. The first detection unit generates at least one detection signal based on an associated one of output signals corresponding to each of at least two directions. The second detection unit has a broader detection range than the first detection unit and generates at least one correction signal based on the associated one of the output signals corresponding to each of the at least two directions. The correction circuitry corrects an associated one of the detection signals corresponding to each of the at least two directions with at least an associated one of the correction signals corresponding to at least one direction, other than one direction subjected to correction, out of the at least two directions.
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公开(公告)号：US10534015B2
公开(公告)日：2020-01-14
申请号：US15159798
申请日：2016-05-19
Inventor： Keisuke Kuroda , Takeshi Mori
IPC: G01P21/00 , G01C25/00 , G01C19/5614 , H03L7/06
Abstract: A sensor is provided including: an element outputting detection signals according to magnitude of physical quantity; a drive circuit outputting a driving signal to the element and receiving a monitor signal from the element; a detection circuit that includes amplifiers amplifying the detection signals and a first synchronous demodulation circuit performing synchronous demodulation on a signal from the amplifier, receives the detection signals, and outputs a physical quantity signal according to the physical quantity; a processing circuit processing a signal from the first synchronous demodulation circuit; a first diagnostic circuit that receives a signal into the processing circuit and a signal from the processing circuit, and outputs a first error signal when abnormalities occur in the processing circuit; and a second diagnostic circuit that outputs a diagnostic signal to the first diagnostic circuit, instead of the signal into the processing circuit or instead of the signal from the processing circuit.
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公开(公告)号：US11754593B2
公开(公告)日：2023-09-12
申请号：US17442272
申请日：2020-01-30
Inventor： Keisuke Kuroda , Takuya Kajiwara , Junji Nakatsuka , Masaaki Nagai
IPC: G01P15/125 , G01P15/18 , G01P21/00 , G01P15/08
CPC classification number: G01P15/125 , G01P15/0802 , G01P15/18 , G01P21/00
Abstract: A signal processing device includes a detection circuit, a correction circuit, and a comparator circuit. The detection circuit generates a first detection signal, based on an output signal of a capacitive detection element that detects inertial force. The correction circuit corrects non-linearity of the first detection signal and outputs a second detection signal thus corrected. The comparator circuit compares the first detection signal and the second detection signal with each other and outputs a comparison signal representing a result of comparison.
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Patent Agency Ranking
公开(公告)号：US11466650B2
公开(公告)日：2022-10-11
申请号：US16708821
申请日：2019-12-10
Inventor： Atsushi Ogawa , Motoaki Kato , Kengo Nomura , Keisuke Kuroda , Takashi Ryu
Abstract: This fuel includes: a first switching element disposed between a booster circuit boosting a battery power and one end of a solenoid; a second switching element disposed between a battery and one end of the solenoid; a third switching element disposed between the other end of the solenoid and a ground; a fourth switching element disposed between one end of the solenoid and a ground; and a control unit configured to control open/closed states of the first switching element, the second switching element, the third switching element, and the fourth switching element. The control unit is configured to open the fourth switching element during a valve closing detection period of detecting closing of a fuel injection valve and to detect the closing of the fuel injection valve on the basis of a change in voltage of the other end of the solenoid.
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公开(公告)号：US10649000B2
公开(公告)日：2020-05-12
申请号：US15760615
申请日：2016-11-02
Inventor： Takahiro Shinohara , Hitoshi Yoshida , Kazuo Goda , Rie Okamoto , Hiroshi Nakatsuka , Masako Yamaguchi , Hideki Ueda , Takanori Aoyagi , Yuki Maegawa , Takuya Kajiwara , Keisuke Kuroda , Takeshi Mori
IPC: G01P15/08 , G01P15/125 , G01P15/18 , H01L29/84
Abstract: A connection assembly includes a sensor substrate, a layer substrate coupled to the sensor substrate so as to face an upper surface of the sensor substrate, and a wire connected between the sensor substrate and the layer substrate. The sensor substrate includes first and second projections provide on the upper surface of the sensor substrate and extending in an extension direction along the upper surface of the sensor substrate. The wire has a first end sandwiched between the layer substrate and the first projection, and a second end sandwiched between the layer substrate and the second projection. The connection assembly provides reliable connection.
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公开(公告)号：US10088497B2
公开(公告)日：2018-10-02
申请号：US15073645
申请日：2016-03-18
Inventor： Takeshi Mori , Keisuke Kuroda , Hitoshi Yoshida , Kazuo Goda , Takumi Taura , Hideki Ueda
IPC: G01P21/00 , G01P15/08 , G01P15/125 , G01P15/18
Abstract: An acceleration sensor includes a CV conversion circuit, an AD conversion circuit, and first and second registers. The CV conversion circuit outputs a voltage corresponding to the capacitance changes between a movable electrode and each of first and second fixed electrodes disposed to face the movable electrode. The AD conversion circuit is connected to the CV conversion circuit and has a first detection range and a second detection range. The first register is connected to the AD conversion circuit and holds a first value. The second register is connected to the AD conversion circuit and holds a second value. The first value contains information about an acceleration in the first detection range, and the second value contains information about an acceleration in the second detection range. The first and second values indicate accelerations in the same direction.
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公开(公告)号：US10921347B2
公开(公告)日：2021-02-16
申请号：US15921296
申请日：2018-03-14
Inventor： Keisuke Kuroda , Takeshi Mori
IPC: G01P21/00 , G01C25/00 , G01C19/5614 , H03L7/06
Abstract: A sensor is provided including: an element outputting detection signals according to magnitude of physical quantity; a drive circuit outputting a driving signal to the element and receiving a monitor signal from the element; a detection circuit that includes amplifiers amplifying the detection signals and a first synchronous demodulation circuit performing synchronous demodulation on a signal from the amplifier, receives the detection signals, and outputs a physical quantity signal according to the physical quantity; a processing circuit processing a signal from the first synchronous demodulation circuit; a first diagnostic circuit that receives a signal into the processing circuit and a signal from the processing circuit, and outputs a first error signal when abnormalities occur in the processing circuit; and a second diagnostic circuit that outputs a diagnostic signal to the first diagnostic circuit, instead of the signal into the processing circuit or instead of the signal from the processing circuit.
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公开(公告)号：US10284091B2
公开(公告)日：2019-05-07
申请号：US15677913
申请日：2017-08-15
Inventor： Keisuke Kuroda , Takashi Ryu
Abstract: A controller controls a bi-directional converter which includes: a first input/output terminal and a second input/output terminal for receiving and outputting a voltage stepped up by a step-up operation and a voltage stepped down by a step-down operation; a first switching element; a second switching element; and an inductor. The controller includes: a first driver which controls the first switching element via a first resistance circuit; a second driver which controls the second switching element via a second resistance circuit; and an operation mode setter which selects one of the step-up operation and the step-down operation, wherein at least one of the first resistance circuit and the second resistance circuit is a variable resistance circuit which has a resistance value that varies for the step-up operation and the step-down operation, in accordance with selection made by the operation mode setter.
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