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公开(公告)号：US11320166B2
公开(公告)日：2022-05-03
申请号：US16975239
申请日：2018-03-20
发明人： Satoshi Hanai , Masahiro Ishihara , Hiroaki Kotake
摘要： An air conditioning system includes: outdoor units; indoor units each communicating with any one of the outdoor units by a first communication method; and a central control device communicating with each of the outdoor units by a second communication method and controlling the outdoor units and the indoor units. One of the outdoor units generates, by using a first address used for communication performed using the first communication method, a second address used for communication performed using a second communication method, generates a second address for one or more of the indoor units by using a first address, and obtains second addresses from another outdoor unit and the central control device. The central control device obtains, from each of the outdoor units, second addresses of the outdoor unit and each indoor unit, and controls operations of the outdoor units and the indoor units by using the second addresses obtained.
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公开(公告)号：US09995772B2
公开(公告)日：2018-06-12
申请号：US14781326
申请日：2014-05-13
CPC分类号： G01R15/181 , G01R19/0092 , H01F38/28
摘要： 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.
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3.发明授权公开(公告)号：US11971792B2
公开(公告)日：2024-04-30
申请号：US17601794
申请日：2019-06-21
发明人： Hiroaki Endo , Masahiro Ishihara , Yoshitaka Otaki
CPC分类号： G06F11/2094 , G06F21/64 , G06F2201/85
摘要： 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).
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公开(公告)号：US10680667B2
公开(公告)日：2020-06-09
申请号：US16477980
申请日：2017-03-22
发明人： Hiroaki Kotake , Masahiro Ishihara
摘要： 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.
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公开(公告)号：US10378785B2
公开(公告)日：2019-08-13
申请号：US15547171
申请日：2015-04-01
摘要： 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.
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公开(公告)号：US10256866B2
公开(公告)日：2019-04-09
申请号：US15508948
申请日：2014-10-28
IPC分类号： H04B3/56 , H04L25/02 , H01L27/144 , H01L31/11 , H04B3/54
摘要： 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.
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公开(公告)号：US10727904B2
公开(公告)日：2020-07-28
申请号：US16497516
申请日：2017-06-16
发明人： Hiroaki Kotake , Masahiro Ishihara
摘要： 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.
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公开(公告)号：US10116352B2
公开(公告)日：2018-10-30
申请号：US15549693
申请日：2015-03-03
摘要： Either one of a communication device and a communication device comprises a direct current power supply configured to generate a direct current for serial communication from alternating current power supplied from an alternating current power supply through a power line and a common line and pass the generated direct current through a current loop. Either the communication device or the communication device comprises an adjuster configured to adjust the impedance between a signal line and the common line based on the voltage between the signal line and the common line (530).
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公开(公告)号：US09869704B2
公开(公告)日：2018-01-16
申请号：US14890655
申请日：2014-06-02
IPC分类号： G01R19/14 , G01R21/06 , G01R35/04 , G01R31/04 , G01R29/18 , G01R19/25 , G01R21/133 , G01R22/10
CPC分类号： G01R21/06 , G01R19/14 , G01R19/2513 , G01R21/133 , G01R22/10 , G01R29/18 , G01R31/041 , G01R35/04
摘要： 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.
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