-
公开(公告)号：US20160054359A1
公开(公告)日：2016-02-25
申请号：US14781326
申请日：2014-05-13
Applicant: MITSUBISHI ELECTRIC CORPORATION
Inventor： Hiroaki KOTAKE , Yoshiaki KOIZUMI , Masahiro ISHIHARA
CPC classification number: G01R15/181 , G01R19/0092 , H01F38/28
Abstract: This current measurement device includes a conductor, a first terminal block, a pair of detection coils and a current calculator. A magnetic field, proportional to the magnitude of a conducted to-be-measured current, is generated around the conductor. The first terminal block has a placement surface on which the conductor is disposed. The pair of detection coils has the configuration, connected in series and in opposite polarities, and disposed on the placement surface of the first terminal block such that the conductor is between the pair of detection coils, and each coil is spaced from the conductor by an insulating distance. The detection coils output an inductive voltage signal produced by the magnetic field generated by the conductor and an external magnetic field which is magnetic noise. A current calculator calculates the value of the to-be-measured current on the basis of the inductive voltage signals from the pair of detection coils.
Abstract translation: 该电流测量装置包括导体，第一端子块，一对检测线圈和电流计算器。 在导体周围产生与导通的待测电流的幅度成比例的磁场。 第一端子块具有布置在该导体上的放置表面。 一对检测线圈具有串联连接并具有相反极性的结构，并且设置在第一端子块的放置表面上，使得导体位于该对检测线圈之间，并且每个线圈与导体间隔一个 绝缘距离。 检测线圈输出由导体产生的磁场产生的感应电压信号和作为磁性噪声的外部磁场。 电流计算器基于来自该对检测线圈的感应电压信号计算待测电流的值。
-
2.发明申请公开(公告)号：US20220206911A1
公开(公告)日：2022-06-30
申请号：US17601794
申请日：2019-06-21
Applicant: Mitsubishi Electric Corporation
Inventor： Hiroaki ENDO , Masahiro ISHIHARA , Yoshitaka OTAKI
Abstract: A device management system (1) includes a common certification information acquirer, a certifier, an identification information generator, and a setter. The common certification information acquirer acquires common certification information from a device (10) including a storage for storing the common certification information. The common certification information stored in the storage is shared with another device. The certifier certifies the device (10) based on the common certification information. The identification information generator generates identification information for identification of the device (10) certified by the certifier. The setter sets the identification information to the device (10).
-
公开(公告)号：US20200021461A1
公开(公告)日：2020-01-16
申请号：US16325875
申请日：2016-11-11
Applicant: Mitsubishi Electric Corporation
Inventor： Hiroaki ENDO , Masahiro ISHIHARA , Yohei MIYAURA , Yoshiro MURAKAMI , Yasushi KUWABARA
IPC: H04L12/40 , H04L12/403 , H04L12/24
Abstract: In a communication device, a communicator communicates with a communication counterpart using a first communication mode or a second communication mode. When a communication by the communicator with the communication counterpart using the second communication mode is reset due to a first cause, if the communication with the communication counterpart using the second communication mode is acceptable, a communication controller causes the communicator to resume communication with the communication counterpart using the second communication mode, and if the communication with the communication counterpart using the second communication mode is unacceptable, the communication controller causes the communicator to start a communication with the communication counterpart using the first communication mode. When the communication by the communicator with the communication counterpart using the second communication mode is reset due to a second cause, the communication controller causes the communicator to resume communication with the communication counterpart using the second communication mode.
-
公开(公告)号：US20180019787A1
公开(公告)日：2018-01-18
申请号：US15547171
申请日：2015-04-01
Applicant: Mitsubishi Electric Corporation
Inventor： Hiroaki KOTAKE , Yoshiaki KOIZUMI , Takuya MUKAI , Masahiro ISHIHARA
CPC classification number: F24F11/89 , H02M7/06 , H03H11/28 , H04B3/542 , H04B3/548 , H04B3/56 , H04L25/0278 , H04M9/00 , H04Q9/00
Abstract: A communication system comprises a communication device and communication devices. The communication device comprises a direct current power supply and a transmitter configured to transmit data by control of a current flowing through a current loop. The communication devices comprise a receiver configured to receive data by detection of the current flowing through the current loop. The communication device comprises an adjuster configured to adjust the impedance between a signal line and a common line according to the number of communication devices.
-
Patent Agency Ranking
公开(公告)号：US20200112336A1
公开(公告)日：2020-04-09
申请号：US16497516
申请日：2017-06-16
Applicant: Mitsubishi Electric Corporation
Inventor： Hiroaki KOTAKE , Masahiro ISHIHARA
Abstract: A communication apparatus is connected to another communication apparatus via a power source line, a signal line, and a shared line. The communication apparatus includes a detector and a communicator. The detector detects the phase of an alternating-current voltage applied between a first terminal for connecting to the power source line and a second terminal for connecting to the shared line. The communicator communicates with the other communication apparatus by executing at least one of transmission or reception of an electric current signal generated by opening and closing a circuit including the signal line and the shared line except when the phase detected by the detector is within a specific range. The specific range is defined as a range in which an induced electric current flowing through the signal line due to the alternating-current voltage is greater than a reference value.
-
公开(公告)号：US20170288729A1
公开(公告)日：2017-10-05
申请号：US15508948
申请日：2014-10-28
Applicant: Mitsubishi Electric Corporation
Inventor： Hiroaki KOTAKE , Yoshiaki KOIZUMI , Takuya MUKAI , Masahiro ISHIHARA
IPC: H04B3/56 , H01L27/144 , H01L31/11 , H04B3/54
CPC classification number: H04B3/56 , H01L27/1443 , H01L31/1105 , H04B3/542 , H04B2203/5466 , H04B2203/5483 , H04L25/02
Abstract: A transmission circuit includes a photocoupler, a conductive/non-conductive state of which is controlled in accordance with data to be transmitted to a communication device. A reception circuit includes a photocoupler, a conductive/non-conductive state of which is controlled in accordance with the conductive/non-conductive state of the transmission path. A transmission circuit includes a photocoupler, a conductive/non-conductive state of which is controlled in accordance with data to be transmitted to a communication device. A reception circuit includes a photocoupler, a conductive/non-conductive state of which is controlled in accordance with the conductive/non-conductive state of the transmission path. The photocoupler is included in the transmission path. The photocoupler and the photocoupler are in opposite conductive/non-conductive states.
-
公开(公告)号：US20200127691A1
公开(公告)日：2020-04-23
申请号：US16477980
申请日：2017-03-22
Applicant: Mitsubishi Electric Corporation
Inventor： Hiroaki KOTAKE , Masahiro ISHIHARA
Abstract: A voltage application circuit including a photocoupler and a resistor applies, to a reception terminal, a voltage corresponding to an intensity of a communication current flowing through a transmission path. A reception control unit determines whether the communication current is flowing, by comparing the voltage applied to the reception terminal with a predetermined voltage threshold. A voltage adjustment circuit including a resistor and a transistor adjusts the voltage that is applied to the reception terminal by the voltage application circuit. A switch control unit switches a current threshold used for determining whether the communication current is flowing by controlling the voltage adjustment circuit in accordance with an intensity of the communication current during an on-control period.
-
公开(公告)号：US20180034503A1
公开(公告)日：2018-02-01
申请号：US15549693
申请日：2015-03-03
Applicant: Mitsubishi Electric Corporation
Inventor： Hiroaki KOTAKE , Yoshiaki KOIZUMI , Takuya MUKAI , Masahiro ISHIHARA
IPC: H04B3/54
CPC classification number: H04B3/54 , H04B2203/5416 , H04B2203/5425
Abstract: Either one of a communication device (100) and a communication device (200) comprises a direct current power supply (110) configured to generate a direct current for serial communication from alternating current power supplied from an alternating current power supply (600) through a power line (510) and a common line (530) and pass the generated direct current through a current loop. Either the communication device (100) or the communication device (200) comprises an adjuster (160) configured to adjust the impedance between a signal line (520) and the common line (530) based on the voltage between the signal line (520) and the common line (530).
-
公开(公告)号：US20160091538A1
公开(公告)日：2016-03-31
申请号：US14890655
申请日：2014-06-02
Applicant: MITSUBISHI ELECTRIC CORPORATION
Inventor： Masahiro ISHIHARA , Yoshiaki KOIZUMI
CPC classification number: G01R21/06 , G01R19/14 , G01R19/2513 , G01R21/133 , G01R22/10 , G01R29/18 , G01R31/041 , G01R35/04
Abstract: A power measurer measures, for each current transformer CT, electric energy supplied to equipment or electric energy supplied from the equipment based on a current measured by a current measurer and a voltage measured by a voltage measurer. A sign memory stores, for each current transformer CT, information indicating whether the electric energy measured by the power measurer when the current transformer CT is disposed in a correct direction on a power line shows a positive sign or a negative sign. A determiner determines that, when the sign stored in the sign memory differs from the sign of the electric energy measured by the power measurer, the current transformer CT is disposed in an incorrect direction on the power line.
Abstract translation: 功率测量器针对每个电流互感器CT，根据由电流测量器测量的电流和由电压测量器测量的电压，测量供应给设备的电能或从设备提供的电能。 符号存储器为每个电流互感器CT存储指示当电流互感器CT在电力线上沿正确的方向设置时由电力测量器测量的电能的信息是否表示正号或负号。 确定器确定当存储在符号存储器中的符号与由功率测量器测量的电能的符号不同时，电流互感器CT被布置在电力线上不正确的方向上。
-
-
-
-
-
-
-
-
Search Results
9
records
(took 0.017 seconds)
