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    Smoke detector
    1.
    发明授权
    Smoke detector 有权

    公开(公告)号：US12148279B2

    公开(公告)日：2024-11-19

    申请号：US17883625

    申请日：2022-08-09

    Applicant: PixArt Imaging Inc.

    Inventor： Cheng-Nan Tsai ,  Yen-Chang Chu ,  Chih-Ming Sun

    IPC: G08B17/10 ,  G08B17/107

    Abstract: A smoke detector includes a substrate, an optical detection module, a base and a top cover. The substrate has a ring shape region surrounding a central detection region, and a first block structure of the central detection region is protruded from the substrate and higher than an upper surface of the ring shape region. The optical detection module is disposed inside the central detection region. The base is disposed on the substrate and around the optical detection module. The base has a second block structure. The top cover is connected to the base. A lateral wall of the top cover is partly overlapped with the second block structure to form a guiding channel. The optical detection module analyzes variation of scattering parameters resulted from gaseous matter entering the top cover through the guiding channel for determining concentration of the gaseous matter.

    Smoke detection device with preferred detection accuracy
    2.
    发明授权
    Smoke detection device with preferred detection accuracy 有权

    公开(公告)号：US12046114B2

    公开(公告)日：2024-07-23

    申请号：US17741459

    申请日：2022-05-11

    Applicant: PixArt Imaging Inc.

    Inventor： Yen-Chang Chu ,  Yen-Po Chen ,  Chih-Ming Sun ,  Cheng-Nan Tsai ,  Ching-Kun Chen

    IPC: G08B17/10 ,  G08B17/107

    CPC classification number: G08B17/107

    Abstract: A smoke detection device includes a housing, a smoke collector, an optical detector and a cover plate. The housing has a piercing hole. The smoker collector has a smoke hole, and position of the smoke hole is close to position of the piercing hole. The optical detector is disposed inside the smoke collector and adapted to detect gaseous concentration inside the smoke collector. The cover plate is disposed between the housing and the smoke collector, and used to set a channel from the piercing hole to the smoke hole, so that gaseous matter flows from outside the smoke detection device into the smoke collector through the piercing hole and the smoke hole.

    SMOKE DETECTOR
    3.
    发明公开
    SMOKE DETECTOR 审中-公开

    公开(公告)号：US20240054874A1

    公开(公告)日：2024-02-15

    申请号：US17883625

    申请日：2022-08-09

    Applicant: PixArt Imaging Inc.

    Inventor： Cheng-Nan Tsai ,  Yen-Chang Chu ,  Chih-Ming Sun

    IPC: G08B17/107

    CPC classification number: G08B17/107

    Abstract: A smoke detector includes a substrate, an optical detection module, a base and a top cover. The substrate has a ring shape region surrounding a central detection region, and a first block structure of the central detection region is protruded from the substrate and higher than an upper surface of the ring shape region. The optical detection module is disposed inside the central detection region. The base is disposed on the substrate and around the optical detection module. The base has a second block structure. The top cover is connected to the base. A lateral wall of the top cover is partly overlapped with the second block structure to form a guiding channel. The optical detection module analyzes variation of scattering parameters resulted from gaseous matter entering the top cover through the guiding channel for determining concentration of the gaseous matter.

    Smoke detector
    4.
    发明授权
    Smoke detector 有权

    公开(公告)号：US11615684B2

    公开(公告)日：2023-03-28

    申请号：US17320222

    申请日：2021-05-14

    Applicant: PixArt Imaging Inc.

    Inventor： Cheng-Nan Tsai ,  Guo-Zhen Wang ,  Ching-Kun Chen ,  Yen-Chang Chu ,  Chih-Ming Sun

    IPC: G08B17/107

    Abstract: There is provided a smoke detector including a light source, a reflective surface, a light sensor and a processor. The light sensor receives reflected light when the light source emits light toward the reflective surface, and generates a reference detection signal when there is no smoke. The processor receives the detection signal from the light sensor, and automatically selects a set of predetermined condition thresholds according to a profile of the detection signal to be compared with the detection signal thereby determining whether to generate an alarm according to the comparison result.

    SMOKE DETECTOR WITH ANTI-INSECT FUNCTION AND SPOILER FUNCTION
    7.
    发明公开
    SMOKE DETECTOR WITH ANTI-INSECT FUNCTION AND SPOILER FUNCTION 审中-公开

    公开(公告)号：US20240159642A1

    公开(公告)日：2024-05-16

    申请号：US18422024

    申请日：2024-01-25

    Applicant: PixArt Imaging Inc.

    Inventor： Yen-Chang Chu ,  Cheng-Nan Tsai ,  Chih-Ming Sun ,  Zhi-Hao Wu ,  Hung-Yu Lai

    IPC: G01N15/075 ,  G01N33/00

    CPC classification number: G01N15/075 ,  G01N33/0027

    Abstract: A smoke detector with an anti-insect function includes a substrate, an optical detection module, a top cover, a base and a perforated plate. The substrate has a ring shape region surrounding a central detection region, and a first block structure of the central detection region is protruded from the substrate and higher than an upper surface of the ring shape region. The optical detection module is disposed inside the central detection region. The top cover has a lateral wall. The base is disposed on the substrate and connected to the top cover to cover the optical detection module. The base has a second block structure partly overlapped with the lateral wall to form a guiding channel. The perforated plate is disposed between the lateral wall and the second block structure to prevent an insect from moving into the top cover through the guiding channel.

    Smoke detector with protrusions
    8.
    发明授权
    Smoke detector with protrusions 有权

    公开(公告)号：US11854361B2

    公开(公告)日：2023-12-26

    申请号：US18111605

    申请日：2023-02-20

    Applicant: PixArt Imaging Inc.

    Inventor： Cheng-Nan Tsai ,  Guo-Zhen Wang ,  Ching-Kun Chen ,  Yen-Chang Chu ,  Chih-Ming Sun

    IPC: G08B17/10 ,  G08B17/107

    CPC classification number: G08B17/107

    Abstract: There is provided a smoke detector including a light source, a reflective surface, a light sensor and a processor. The light sensor receives reflected light when the light source emits light toward the reflective surface, and generates a reference detection signal when there is no smoke. The processor receives the detection signal from the light sensor, and automatically selects a set of predetermined condition thresholds according to a profile of the detection signal to be compared with the detection signal thereby determining whether to generate an alarm according to the comparison result.

    Smoke detector capable of distinguishing smoke and particles
    10.
    发明授权
    Smoke detector capable of distinguishing smoke and particles 有权

    公开(公告)号：US12106649B2

    公开(公告)日：2024-10-01

    申请号：US18509350

    申请日：2023-11-15

    Applicant: PixArt Imaging Inc.

    Inventor： Cheng-Nan Tsai ,  Guo-Zhen Wang ,  Ching-Kun Chen ,  Yen-Chang Chu ,  Chih-Ming Sun

    IPC: G08B17/10 ,  G08B17/107

    CPC classification number: G08B17/107

    Abstract: There is provided a smoke detector including a first light source, a second light source surface, a light sensor and a processor. The light sensor receives reflected light when the first light source and the second light source emit light, and generates a first detection signal corresponding to light emission of the first light source and a second detection signal corresponding to light emission of the second light source. The processor distinguishes smoke and floating particles according to a similarity between the first detection signal and the second detection signal.

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