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公开(公告)号：US20220397908A1
公开(公告)日：2022-12-15
申请号：US17775413
申请日：2020-07-22
Applicant: Hitachi, Ltd.
Inventor： Yuichi IGARASHI , Yuta ESAKA , Kazuo ONO , Noriyasu HASEJIMA , Kazuya MUROTANI , Takehito OGATA
IPC: G05D1/02
Abstract: Provided is a self-propelled inspection device capable of improving efficiency of system introduction cost, setting, and update work necessary for self-propelling in a self-propelled inspection device expected to be operated outdoors for a long period of time. Therefore, there is provided the self-propelled inspection device that autonomously inspects an inspection object while autonomously traveling an inspection route, the self-propelled inspection device including: a self-position estimation unit that estimates a self-position; a map information database that manages map information for autonomous traveling; a traveling unit including a drive mechanism and a steering mechanism; a sensor that senses the inspection object; a map information update unit that updates the map information based on information sensed by the sensor; and a traveling unit control unit that controls the traveling unit based on the updated map information.
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公开(公告)号：US20180370793A1
公开(公告)日：2018-12-27
申请号：US15918502
申请日：2018-03-12
Applicant: Hitachi, Ltd.
Inventor： Masaharu KINOSHITA , Atsushi ISOBE , Kazuo ONO , Noriyuki SAKUMA , Tomonori SEKIGUCHI , Keiji WATANABE
Abstract: A manufacturing method of a MEMS sensor includes a step of, by irradiating a first hole formed in a second layer on a semiconductor substrate with a focused ion beam for a first predetermined time, forming a first sealing film, which seals the first hole, on the first hole, and a step of, by irradiating a second hole formed in the second layer with a focused ion beam for a second predetermined time, forming a second sealing film, which seals the second hole, on the second hole. At this time, each of the first predetermined time and the second predetermined time is a time in which thermal equilibrium of the second layer is maintainable, and the step of forming the first sealing film and the step of forming the second sealing film are performed repeatedly.
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公开(公告)号：US20180202960A1
公开(公告)日：2018-07-19
申请号：US15869943
申请日：2018-01-12
Applicant: Hitachi, Ltd.
Inventor： Kazuo ONO , Yoshitaka SASAGO
IPC: G01N27/28 , H03F3/45 , H01L29/788 , G01N27/414 , H01L29/06 , H01L29/78
CPC classification number: G01N27/28 , G01N27/4141 , G01N27/4146 , G01N27/4148 , H01L29/0649 , H01L29/7832 , H01L29/788 , H03F3/45179
Abstract: There is provided a field effect transistor type gas sensor, the gas sensor including a substrate, an oxide film on the substrate, a gate electrode on the oxide film, a body electrode which is disposed on the substrate, a first switch that changes a voltage which is applied to the gate electrode, and a second switch that changes a voltage which is applied to the body electrode. The gate electrode and the first switch are connected with each other through an electrical wire.
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公开(公告)号：US20200150156A1
公开(公告)日：2020-05-14
申请号：US16676852
申请日：2019-11-07
Applicant: Hitachi, Ltd.
Inventor： Kazuo ONO , Kouji MATSUDA , Takuma NISHIMURA
IPC: G01R19/145 , G01R19/25 , G01M15/02
Abstract: A rotary tool diagnosis system according to one aspect of the present invention includes a first current detector, a second current detector, and a signal processing device. The first current detector detects a current of at least one power line connected to a first electric motor that rotates a rotary tool. The second current detector detects a current of at least one power line connected to a second electric motor that is used for moving the rotary tool. The signal processing device triggers based on a result of processing on an output signal of the second current detector and starts recording of an output signal from the first current detector.
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Patent Agency Ranking
公开(公告)号：US20210349436A1
公开(公告)日：2021-11-11
申请号：US17230002
申请日：2021-04-14
Applicant: Hitachi, Ltd.
Inventor： Yuya OGI , Takuma NISHIMURA , Kazuo ONO
IPC: G05B19/042 , G06N20/00 , G06N5/04
Abstract: A sensor device includes: a sensor data acquisition unit that acquires sensor data of a measurement target from a sensor; a sensor data analysis unit that analyzes the data acquired by the sensor data acquisition unit; an extraction data setting unit that sets extraction conditions indicating a part desired to be extracted from among all the sensor data; a specific condition extraction unit that extracts a part from among all the sensor data based on an analysis result and the extraction conditions; and a user interface unit that allows a user to input/output information. Further, the user interface unit includes simple condition setting means by which a simple condition being at least one or more of the extraction conditions among the extraction conditions can be set in the sensor data analysis unit, and detection result display means that displays data satisfying the simple condition in the sensor data analysis unit.
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公开(公告)号：US20200103306A1
公开(公告)日：2020-04-02
申请号：US16556746
申请日：2019-08-30
Applicant: HITACHI, LTD.
Inventor： Toshiyuki MINE , Yuudai KAMADA , Tetsuya ISHIMARU , Kazuo ONO
Abstract: A water leak sensing system includes: a plurality of sensor terminals including a sensor installed in a pipeline of a water supply network; and a computer that senses a water leak from the pipeline based on detection signal data of the plurality of sensors of the plurality of sensor terminals, and outputs a result. The pipeline is either a first pipeline not covered by a pipe covering member (PE sleeve) or a second pipeline covered by the pipe covering member. The sensor can detect a signal at a first distance from a water leak point when the water leak occurs in the first pipeline, and detect a signal at a second distance, longer than the first distance, from the water leak point when the water leak occurs in the second pipeline.
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公开(公告)号：US20230161334A1
公开(公告)日：2023-05-25
申请号：US17921408
申请日：2020-06-15
Applicant: Hitachi, Ltd.
Inventor： Reiso SASAKI , Kazuo ONO
IPC: G05B19/418 , G01K1/024 , H04W52/02
CPC classification number: G05B19/41865 , G01K1/024 , H04W52/0251 , G05B2219/50185
Abstract: An automatic inspection system includes a wireless slave device and a wireless master device. The wireless slave device includes a sound collection unit that collects sound generated from an inspection target object, an analysis unit that analyzes the collected sound to obtain a degree of difference between the collected sound and normal sound learned in advance and sound state information of the collected sound, as an analysis result, a wireless communication unit that wirelessly transmits data including the analysis results to a wireless master device, and a power supply unit that supplies power to the sound collection unit, the analysis unit, and the wireless communication unit. The wireless master device is configured to perform processing of receiving and managing the data from the wireless slave device, and transmitting the analysis result extracted from the data to a monitoring terminal that monitors a state of the inspection target object.
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公开(公告)号：US20210382491A1
公开(公告)日：2021-12-09
申请号：US17245041
申请日：2021-04-30
Applicant: Hitachi, Ltd.
Inventor： Kazuya MUROTANI , Noriyasu HASEJIMA , Takehito OGATA , Yuichi IGARASHI , Kazuo ONO , Yuta ESAKA
Abstract: A self-propelled inspection robot according to the invention includes a self-position estimation unit that performs inspection of an equipment by traveling on a travel route and obtains the position of the self-propelled inspection robot, an obstacle detection unit that detects an obstacle, an inspection continuity determination unit that determines whether the self-propelled inspection robot can continue the inspection, a mode selection unit that selects an automatic mode and a manual mode as a travel mode of the self-propelled inspection robot when the inspection continuity determination unit determines that the inspection cannot be continued, and a control unit that makes the self-propelled inspection robot automatically travel when the inspection continuity determination unit and when the mode selection unit selects the automatic mode, and makes the self-propelled inspection robot travel by a user's operation when the mode selection unit selects the manual mode.
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公开(公告)号：US20190310158A1
公开(公告)日：2019-10-10
申请号：US16251580
申请日：2019-01-18
Applicant: HITACHI, LTD.
Inventor： Kazuo ONO , Yuudai KAMADA , Ryosuke FUJIWARA , Takashi ENDO
Abstract: A monitoring system includes a plurality of sensor terminals installed for a target to be measured, a base station wirelessly communicating with the sensor terminals, and a calculator communicable with the base station. The sensor terminal includes a sensor element which acquires vibration information of a target to be measured, an arithmetic unit which performs an arithmetic operation for data including the vibration information of the sensor element, and a wireless communication unit. The arithmetic unit performs a reduction process for reducing an amount of data of the sensor element. The wireless communication unit transmits data processed by the arithmetic unit to the base station. After the transmitted data is received, the base station transmits it to the calculator. The calculator includes a signal processing unit. The signal processing unit complements the reduction-processed data to acquire vibration information, and averages the vibration information for a predetermined period of time.
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