公开(公告)号：US20240053385A1

公开(公告)日：2024-02-15

申请号：US18088945

申请日：2022-12-27

Applicant: KINGFAR INTERNATIONAL INC.

Inventor： Qichao ZHAO ,  Ran Yang ,  Zhao Li

IPC: G01R1/30 ,  A61B5/369

CPC classification number: G01R1/30 ,  A61B5/369

Abstract: Disclosed are an EEG impedance test circuit, a method, and a device. The circuit comprises a frequency selecting circuit, an amplification circuit, a follower circuit, and a power supply terminal AVCC. An input end of the frequency selecting circuit is connected to the power supply terminal AVCC, the input end of the frequency selecting circuit is further connected to the input end of the amplification circuit, an output end of the frequency selecting circuit is connected to the output end of the amplification circuit, and the output end of the amplification circuit is connected to the input end of the follower circuit; the frequency selecting circuit is configured for oscillating so as to generate an oscillation signal; and the follower circuit is configured for isolating the frequency selecting circuit and the amplification circuit; the follower circuit is configured for circuit isolation.

公开(公告)号：US12105127B2

公开(公告)日：2024-10-01

申请号：US18088931

申请日：2022-12-27

Applicant: KINGFAR INTERNATIONAL INC.

Inventor： Qichao Zhao ,  Ran Yang ,  Zhao Li

IPC: G01R27/02 ,  G01L1/18 ,  G01R1/30

CPC classification number: G01R27/02 ,  G01L1/18 ,  G01R1/30

Abstract: Disclosed are a detection circuit and apparatus based on equipotential shielding. A first connection end of a row control circuit, configured to be connected to a row lead of an array piezoresistive sensor; a control end of the row control circuit, connected to a main control chip for outputting a control signal; a second connection end of the row control circuit, connected to a first power supply terminal; and a row pull-up resistor, with an end connected to the row lead and another end connected to a second power supply terminal. Herein, each row lead corresponds to one row pull-up resistor; each column lead of the array piezoresistive sensor is connected to an input end of an inverse adder; an output end of the inverse adder is connected to a first connection end of the column control circuit.

公开(公告)号：US20240036091A1

公开(公告)日：2024-02-01

申请号：US18088931

申请日：2022-12-27

Applicant: KINGFAR INTERNATIONAL INC.

Inventor： Qichao ZHAO ,  Ran Yang ,  Zhao Li

IPC: G01R27/02 ,  G01R1/30 ,  G01L1/18

CPC classification number: G01R27/02 ,  G01R1/30 ,  G01L1/18

Abstract: Disclosed are a detection circuit and apparatus based on equipotential shielding. A first connection end of a row control circuit, configured to be connected to a row lead of an array piezoresistive sensor; a control end of the row control circuit, connected to a main control chip for outputting a control signal; a second connection end of the row control circuit, connected to a first power supply terminal; and a row pull-up resistor, with an end connected to the row lead and another end connected to a second power supply terminal. Herein, each row lead corresponds to one row pull-up resistor; each column lead of the array piezoresistive sensor is connected to an input end of an inverse adder; an output end of the inverse adder is connected to a first connection end of the column control circuit.

公开(公告)号：US12267237B2

公开(公告)日：2025-04-01

申请号：US18088907

申请日：2022-12-27

Applicant: KINGFAR INTERNATIONAL INC.

Inventor： Qichao Zhao ,  Ran Yang ,  Zhao Li

IPC: H04L45/74 ,  H04L67/12

Abstract: Disclosed are a sensor data transmission method and a device. The method includes: a periodic signal acquisition apparatus receiving a message requesting for data packet description information from a data receiving end and reporting the data packet description information to the data receiving end, wherein the data packet description information includes: signal type information, the acquisition rate for each type of signal, and the sending rate of a data packet; receiving a data reporting request from the receiving end, and sending a data packet to the data receiving end according to the sending rate of the data packet in the data packet description information, wherein the data packet sent to the data receiving end contains a packet header portion and a load portion, the packet header portion includes a frame header field, a load length field, and a check field.

公开(公告)号：US20230210462A1

公开(公告)日：2023-07-06

申请号：US18086768

申请日：2022-12-22

Applicant: KINGFAR INTERNATIONAL INC.

Inventor： Qichao ZHAO ,  Ran Yang ,  Zhao Li

IPC: A61B5/00 ,  A61B5/145 ,  A61B5/024

CPC classification number: A61B5/6815 ,  A61B5/024 ,  A61B5/721 ,  A61B5/6838 ,  A61B5/14542

Abstract: Disclosed are a wearable multi-index integrated physiological intelligent sensor system and a physiological index monitoring method. The system includes a device body and an intelligent terminal. The device body is provided with a fixing piece, which is configured to fix the device body at a human ear; the device body is further provided with a collecting and processing assembly, which is in wireless communication connection with the intelligent terminal; the collecting and processing assembly collects a corresponding physiological index signal in response to a physiological index collection instruction sent by the intelligent terminal, and analyzes and processes the physiological index signal to obtain a corresponding physiological index data, and sends the physiological index data to the intelligent terminal; in which, the physiological index signal includes electrodermal signal, heart rate signal and blood oxygen signal; the intelligent terminal is configured to receive and display a physiological index data.