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公开(公告)号：US20250079539A1
公开(公告)日：2025-03-06
申请号：US18950282
申请日：2024-11-18
Applicant: BYD COMPANY LIMITED
Inventor： Wenjing BAO , Jie LI , Qifeng LI , Yun YANG
IPC: H01M10/42 , H01M50/583
Abstract: A vehicle, having a battery system, and the battery system having a battery cell management chip, wherein the chip comprises a collection circuit, a power source, a processing circuit, and a dynamic protection circuit; the collection circuit is used for collecting a parameter value of a working parameter of a single battery cell and transmitting the parameter value to the processing circuit; the power source supplies power to the processing circuit; a storage circuit is used for storing a dynamic protection threshold value for the working parameter; the processing circuit is used for adjusting the working state of the single battery cell in the case of an anomaly; and the dynamic protection circuit is used for adjusting the working state of the single battery cell according to the dynamic protection threshold value.
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公开(公告)号：US20180018497A1
公开(公告)日：2018-01-18
申请号：US15548688
申请日：2016-01-05
Applicant: BYD COMPANY LIMITED
Inventor： Li ZHENG , Kunping XU , Yun YANG
Abstract: The present disclosure discloses a method and device for calculating a line distance. The method includes: obtaining an original image and performing grayscale processing to generate a grayscale image; generating a radical image and a tangential image according to the grayscale image; performing filtering on the grayscale image according to the tangential image to generate a smoothened image and converting the smoothened image into a binary image; dividing the binary image into blocks acid determining a radical direction of a center point of each block according to the radical image; traversing pixels in the radical direction of the center point of each block to calculate a number of times pixel values of two adjacent pixels within the each block change between a first pixel value and a second pixel value, and to calculate a coordinate and sub-pixel value of a boundary point corresponding to a changing-point; and generating the line distance according to the number of times of the change, and the coordinate and the sub-pixel value of the boundary point corresponding to the changing-point. The method seeks the boundary point of the fingerprint ridge lines and the fingerprint valley lines and calculates the line distance according to the coordinates and the sub-pixel value of the boundary point, improving accuracy, strengthening the ability to resist noise
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公开(公告)号：US20170160323A1
公开(公告)日：2017-06-08
申请号：US15436981
申请日：2017-02-20
Applicant: BYD COMPANY LIMITED
Inventor： Shengsheng CHEN , Jie ZHANG , Yun YANG
IPC: G06F3/045
CPC classification number: G06F3/0418 , G06F3/0416 , G06F3/044 , G06F3/047 , G09G5/003 , G09G2300/0426
Abstract: A capacitance detecting circuit includes induction units; a transferring capacitor configured to transfer charges to a capacitor of a scanned induction unit; a charging module that charges the transferring capacitor, wherein a first terminal of the charging module connects to the first terminal of the transferring capacitor, and a second terminal of the charging module connects to a first power supply; a discharging module that discharges the transferring capacitor and including a first resistor and a second switch; and a controller connected to the charging module, the transferring capacitor and the discharging module, and configured to control the second switch to switch on when a voltage of the transferring capacitor is larger than a preset threshold voltage, and to update a count value and detect a touch on the induction units according to the count value.
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公开(公告)号：US20180025198A1
公开(公告)日：2018-01-25
申请号：US15549896
申请日：2016-01-05
Applicant: BYD COMPANY LIMITED
Inventor： Zhengang LI , Kunping XU , Yun YANG
IPC: G06K9/00
CPC classification number: G06K9/0002
Abstract: The present disclosure provides a fingerprint detection circuit and method. The circuit includes a fingerprint collecting module and a processing module. The fingerprint collecting module includes a plurality of collecting units, and each collecting unit has a regulation voltage and is configured to output a first voltage or a second voltage according to a capacitance value of one of ridge capacitors, a capacitance value of one of ridge capacitors and the regulation voltage. The processing module is configured to amplify the first and second voltages by a predetermined factor, to calculate a difference between the amplified first and second voltages, and to determine whether the difference is greater than or equal to the predetermined threshold. If no, the processing module adjusts at least one parameter, and configures the fingerprint detection circuit using at least one adjusted parameter.
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5.发明申请公开(公告)号：US20180018499A1
公开(公告)日：2018-01-18
申请号：US15549121
申请日：2016-01-05
Applicant: BYD COMPANY LIMITED
Inventor： Lei LEI , Kunping XU , Yun YANG
CPC classification number: G06K9/00067 , G06K9/00087 , G06K9/34
Abstract: The present disclosure discloses method for calculating an area of a fingerprint overlapping region, including: collecting a to-be-matched fingerprint to obtain a to-be-matched fingerprint image; searching multiple pairs of matching characteristic points between the to-be-matched fingerprint image and a preset template fingerprint image; obtaining an image offset of the to-be-matched fingerprint image according to the multiple pairs of matching characteristic points; based on the image offset, adjusting a position of the to-be-matched fingerprint image to obtain an overlapping region between the to-be-matched fingerprint image and the preset template fingerprint image; and calculating a total number of image pixels within the overlapping region, and calculating an area of the overlapping region based on the total number of image pixels within the overlapping region.
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Patent Agency Ranking
6.发明申请公开(公告)号：US20180005014A1
公开(公告)日：2018-01-04
申请号：US15537707
申请日：2015-11-03
Applicant: BYD COMPANY LIMITED
Inventor： Guilan CHEN , Qiyong WEN , Tiejun CAI , Bangjun HE , Yun YANG
IPC: G06K9/00 , A61B5/1172
CPC classification number: G06K9/00087 , A61B5/1172 , G06K9/0002 , G06K9/00026
Abstract: In the fingerprint identification system according to the present disclosure, the fingerprint sensor collects multiple frames of fingerprint images sliding-inputted by a user, the judging unit determines whether, among the multiple frames of fingerprint images, there is a first overlap region between a current frame of fingerprint images and a previous frame of fingerprint images; if yes, the judging unit removes the first overlap region from the current frame of fingerprint images and superposes the previous frame of fingerprint images with the current frame of fingerprint images to form a superposed fingerprint image; the judging unit completes judgment of all the multiple frames of fingerprint images to obtain a template fingerprint image; the processing unit saves characteristic points of the complete template fingerprint image. The fingerprint sensor collects a to-be-identified fingerprint image pressing-inputted by the user, and the processing unit determines whether the characteristic points of the to-be-identified fingerprint image match with the characteristic points of the template fingerprint image. When establishing template fingerprint database, the fingerprint identification system collects the fingerprint sliding-inputted by the user and the to-be-identified fingerprint pressing-inputted by the user in the subsequent matching process. Therefore, the input and identification efficiency is much higher than that of existing methods. The present disclosure also provides a fingerprint identification method and an electric equipment.
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公开(公告)号：US20180299248A1
公开(公告)日：2018-10-18
申请号：US15574053
申请日：2016-06-08
Applicant: BYD COMPANY LIMITED
Inventor： Zhengang LI , Kunping XU , Yun YANG
CPC classification number: G01B7/28 , G06K9/0002
Abstract: The present disclosure provides a method and an apparatus for adjusting an excitation voltage of a fingerprint detection chip and a fingerprint detection chip. The method for adjusting an excitation voltage of a fingerprint detection chip includes: S1, transmitting an excitation signal to the metal ring by the signal transmitting unit, so as to detect a capacitance value of a coupling capacitance formed between the plurality of detection units in the second detection area and the metal ring; or enabling the metal ring grounded, and applying an excitation signal to the plurality of detection units in the second detection area by the signal transmitting unit, so as to detect a capacitance value of a coupling capacitance formed between the plurality of detection units in the second detection area and the metal ring; and S2, adjusting an excitation voltage of the first detection area according to the capacitance value of the coupling capacitance formed between the plurality of detection units in the second detection area and the metal ring.
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公开(公告)号：US20180032780A1
公开(公告)日：2018-02-01
申请号：US15549872
申请日：2016-01-05
Applicant: BYD COMPANY LIMITED
Inventor： Zhengang LI , Kunping XU , Yun YANG
CPC classification number: G06K9/0002 , H03F3/005 , H03F2200/129
Abstract: A fingerprint detection circuit and an electronic device are provided. The fingerprint detection circuit is configured to apply an excitation signal to a finger so as to generate a finger capacitor, and the fingerprint detection circuit includes: a signal amplifier having a negative input terminal connected with the finger capacitor, a positive input terminal connected with a voltage reference terminal, and an output terminal to output an output voltage according to a capacitance value of the finger capacitor; a capacitor; and a switch unit connected with the negative input terminal and the output terminal of the signal amplifier respectively, and configured to control the capacitor to be connected between the negative input terminal and the output terminal of the signal amplifier, such that the output voltage has a non-linear relationship with the capacitance value of the finger capacitor.
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公开(公告)号：US20180032784A1
公开(公告)日：2018-02-01
申请号：US15550844
申请日：2016-01-05
Applicant: BYD COMPANY LIMITED
Inventor： Zhengang LI , Kunping XU , Yun YANG
CPC classification number: G06K9/0008 , G06K9/00 , G06K9/00013 , G06K9/001 , G06T3/4038
Abstract: The present disclosure provides a fingerprint identification method and apparatus. The fingerprint identification method includes obtaining a to-be-identified fingerprint image and extracting first characteristic points of the to-be-identified fingerprint image; determining whether a number of the first characteristic points of the to-be-identified fingerprint image is less than a predetermined threshold: when the number of the first characteristic points of the to-be-identified fingerprint image is less than the predetermined threshold, selecting, a fingerprint template image according to the number of the first characteristic points; extracting second characteristic points in the fingerprint template image matching with the first characteristic points of the to-be-identified fingerprint image; overlapping the fingerprint template image with the to-be-identified fingerprint image according to the first characteristic points of the to-be-identified fingerprint image and the second characteristic points of the fingerprint template image to form an overlapped image; determining a valid coincidence region between the to-be-identified fingerprint image and the fingerprint template image in the overlapped image; and determining whether the to-be-identified fingerprint image matches the fingerprint template image according to the valid coincidence region to generate a matching result and performing fingerprint identification based on the matching result. According to the disclosed method, fingerprint identification with less characteristic points can be realized, thus improving the success rate of the fingerprint identification, and reducing the identification error rate.
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公开(公告)号：US20180005000A1
公开(公告)日：2018-01-04
申请号：US15546754
申请日：2016-01-05
Applicant: BYD COMPANY LIMITED
Inventor： Zhengang LI , Kunping XU , Yun YANG
IPC: G06K9/00
CPC classification number: G06K9/0002 , G06K9/001
Abstract: A fingerprint detection circuit and an electronic device are provided. The fingerprint detection circuit is configured to apply an excitation signal to a finger so as to generate finger capacitors, and the fingerprint detection circuit includes: a signal amplifier having a negative input terminal connected with one of the finger capacitors, a positive input terminal connected with a ground terminal, and an output terminal to output an output voltage according to a capacitance value of the one of the finger capacitors; a capacitor connected between the negative terminal and the output terminal of the signal amplifier; a rheostat; and a switch unit connected with the rheostat in series and configured to control the rheostat to be connected with the capacitor in parallel, such that the output voltage has a non-linear relationship with the capacitance value of the one of the finger capacitors.
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