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    MICROWAVE SENSOR DEVICE, AND SENSING METHODS, AND LIGHTING SYSTEM USING THE SENSOR DEVICE
    1.
    发明申请
    MICROWAVE SENSOR DEVICE, AND SENSING METHODS, AND LIGHTING SYSTEM USING THE SENSOR DEVICE 有权

    公开(公告)号：US20210168920A1

    公开(公告)日：2021-06-03

    申请号：US17268563

    申请日：2019-07-31

    申请人： SIGNIFY HOLDING B.V.

    发明人： LIANG SHI ,  RANG JIAN DING ,  GANG WANG ,  SHOAIB KHAN ,  FETZE PIJLMAN

    IPC分类号： H05B47/115 ,  H05B47/19 ,  H05B47/155 ,  G01S17/50 ,  G01S17/86

    摘要： A microwave sensor device is for detecting activity and for sending and/or receiving a communications signal to/from a second microwave sensor device. A microwave transceiver is used for transmitting a microwave transmit signal and for receiving a microwave receive signal. For motion detection, the microwave receive signal is a reflected version of the microwave transmit signal and the signals are processed to identify first signal characteristics. For communication, the microwave transmit signal is a communications signal for detection at another sensor device. The transmit and microwave receive signals are processed to identify second characteristics. This sensor device detects motion and also transmits and/or receives a communications signal using the same transceiver. In particular, the communications signal is designed to be detected by a remote sensor device in the same way as for motion detection.

    LED DRIVING CIRCUIT AND LED LIGHTING CIRCUIT
    5.
    发明公开
    LED DRIVING CIRCUIT AND LED LIGHTING CIRCUIT 审中-公开

    公开(公告)号：US20240196497A1

    公开(公告)日：2024-06-13

    申请号：US18556193

    申请日：2022-04-19

    申请人： SIGNIFY HOLDING B.V.

    发明人： JIE FU ,  SHIGUANG SUN ,  ZHIQUAN CHEN ,  FENG JU ,  YU WANG ,  GANG WANG

    IPC分类号： H05B45/50

    CPC分类号： H05B45/50

    摘要： To provide a safer over voltage protection, it is provided a driving circuit for a light emitting source, comprising an input adapted to receive a power supply; a conversion circuit, adapted to convert the power supply and provide a converted power, comprising a power switch (M2); an output, adapted to output the converted power; an output capacitor (C2) connected at the output; a first control circuit coupled to the output and connected to the power switch (M2), adapted to sense a voltage corresponding to the voltage on the output capacitor and control the power switch operate in a power-reducing mode to reduce the converted power when the voltage corresponding to the voltage on the output capacitor sensed by the first control circuit exceeds a first level; and a second control circuit (D15) connected to the output capacitor (C2) and connected to a control terminal of the power switch (M2), adapted to sense a voltage at the output capacitor (C2) and damage and make the power switch (M2) unoperational permanently when the voltage at the output capacitor (C2) sensed by the second control circuit exceeds a second level.

    A BOOST CONVERTER AND METHOD OF CONTROLLING A BOOST CONVERTER
    6.
    发明公开
    A BOOST CONVERTER AND METHOD OF CONTROLLING A BOOST CONVERTER 审中-公开

    公开(公告)号：US20230299681A1

    公开(公告)日：2023-09-21

    申请号：US18014331

    申请日：2021-06-23

    申请人： SIGNIFY HOLDING B.V.

    发明人： YU WANG ,  ZHIQUAN CHEN ,  JIE FU ,  SHAN WANG ,  GANG WANG

    IPC分类号： H02M3/158 ,  H02M1/36 ,  H05B45/38

    CPC分类号： H02M3/1588 ,  H02M1/36 ,  H05B45/38

    摘要： A boost converter has a main energy storage inductor and a main GaN boost switch with a node between them. A pre-charging switch is connected at the output side of the main boost switch and the inductor, between the node and an output capacitor. The pre-charging switch comprises a body diode in the forward direction from the output capacitor to the node. The output capacitor is charged by the pre-charging switch in a pre-charge phase and this provides a soft start-up to avoid large inrush currents. A third switch, which is also a GaN switch, is in series with the pre-charging switch to provide synchronous output rectification. The third switch has a body diode in a forward direction from the node to the output capacitor. In the pre-charge phase, both the boost switch and third switch are turned off whereas in a subsequent boost phase, the pre-charging switch is turned constantly on, and alternately the boost switch and the third switch are turned on and off to implement the boost conversion.

    A METHOD OF AND A NODE DEVICE FOR TRANSMITTING A TRIGGER MESSAGE IN A NETWORK OF OPERATIVELY INTERCONNECTED NODE DEVICES
    7.
    发明公开
    A METHOD OF AND A NODE DEVICE FOR TRANSMITTING A TRIGGER MESSAGE IN A NETWORK OF OPERATIVELY INTERCONNECTED NODE DEVICES 审中-公开

    公开(公告)号：US20230247403A1

    公开(公告)日：2023-08-03

    申请号：US18024438

    申请日：2021-09-07

    申请人： SIGNIFY HOLDING B.V.

    发明人： GANG WANG

    IPC分类号： H04W4/70 ,  H04W4/06

    CPC分类号： H04W4/70 ,  H04W4/06

    摘要： A method of, a node device and a computer program product arranged for transmitting a trigger message in a network of operatively interconnected node devices arranged along at least one elongated track is disclosed. The trigger message is configured for triggering a service provided by the node devices to a moving object. The node devices are divided into a plurality of groups, each group comprising, seen in a moving direction of the object, a first edge node device, at least one normal node device and a second edge node device, within each group at least the first edge node device and the second edge node device respectively comprising a sensor for detecting the object. The method comprises the step of: receiving, by a first edge node device in a group, a first object-approaching trigger message transmitted by a second edge node device in an immediate preceding group; and transmitting, by the first edge node device in the group, a second object-approaching trigger message to other node devices in the group. The method therefore ensures that only forward group trigger of the service is performed.