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1.发明申请公开(公告)号：US20250137979A1
公开(公告)日：2025-05-01
申请号：US18927774
申请日：2024-10-25
Inventor： Hyung Wook NOH , Do Hyeun KIM , Hwin Dol PARK , Chang Geun AHN , Yong Won JANG , Jae Hun CHOI
IPC: G01N33/00
Abstract: The present disclosure relates to a method and apparatus for performing sensor drift compensation based on double cycling measurement. A method for performing drift correction according to gas sensor measurement according to an embodiment of the present disclosure may comprise: obtaining first measurement data for a reference gas for each sensor using one or more sensors in a first cycle; obtaining second measurement data for a target gas for each sensor using the one or more sensors in a second cycle; and generating a drift-corrected feature for each sensor based on a ratio calculated by dividing the second measurement data by the first measurement data.
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公开(公告)号：US20220187262A1
公开(公告)日：2022-06-16
申请号：US17513567
申请日：2021-10-28
Inventor： YongWon JANG , Hwin Dol PARK , CHANG-GEUN AHN , Do Hyeun KIM , Seunghwan KIM , Hyung Wook NOH , Kwang Hyo CHUNG , Jae Hun CHOI
Abstract: Disclosed are a device and a method for anomaly detection of a gas sensor. The device includes a measuring unit that extracts a characteristic of a gas supplied from the outside, generates data based on the extracted characteristic, and outputs the data, and a data processing unit that receives the data, determines whether an error occurs in the data, and outputs an anomaly detection result based on a result of determining whether the error occurs in the data. The measuring unit performs a calibration operation or an environment adjusting operation before extracting the characteristic, and the data processing unit determines whether the error occurs in the data, based on machine learning.
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公开(公告)号：US20220170900A1
公开(公告)日：2022-06-02
申请号：US17401449
申请日：2021-08-13
Inventor： Jae Hun CHOI , Hwin Dol PARK , Chang-Geun AHN , Do Hyeun KIM , Seunghwan KIM , Hyung Wook NOH , YongWon JANG , Kwang Hyo CHUNG
Abstract: Disclosed are a gas detection intelligence training system and an operating method thereof. The gas detection intelligence training system includes a mixing gas measuring device that collects an environmental gas from a surrounding environment, generates a mixing gas based on the collected environmental gas and a target gas, senses the mixing gas by using a first sensor array and a second sensor array under a first sensing condition and a second sensing condition, respectively, and generates measurement data based on the sensed results of the first sensor array and the second sensor array, and a detection intelligence training device including a processor that generates an ensemble prediction model based on the measurement data.
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公开(公告)号：US20150099961A1
公开(公告)日：2015-04-09
申请号：US14500741
申请日：2014-09-29
Inventor： Yong Jae LEE , Bong Kyu KIM , Hyun Woo SONG , Chang Geun AHN , Eun Ju JEONG , Hyung Wook NOH , Won Ick JANG
IPC: A61B5/00
CPC classification number: A61B5/0095
Abstract: Provided is a miniaturized photo-acoustic probe for a clinical image capable of effectively measuring a photo-acoustic signal by making an ultrasonic axis and an optical axis parallel. The photo-acoustic probe for a clinical image includes a laser generator configured to generate a laser beam, an ultrasound transducer disposed to be parallel to the laser generator and configured to analyze ultrasound output from an object, first and second reflectors configured to receive ultrasound generated in an axis identical to that of the laser beam generated by the laser generator, and a medium material configured to allow the laser to be transmitted from the first reflector to the object and increase ultrasound reflectivity of the first and the second reflector.
Abstract translation: 提供了一种用于临床图像的小型化光声探头，其能够通过使超声波轴和光轴平行来有效地测量光声信号。 用于临床图像的光声探头包括被配置为产生激光束的激光发生器，设置成平行于激光发生器并被配置为分析来自物体的超声波输出的超声波换能器，被配置为接收产生的超声的第一和第二反射器 在与由激光发生器产生的激光束的轴线相同的轴上，以及介质材料，被配置为允许激光从第一反射器传送到物体并增加第一和第二反射器的超声波反射率。
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公开(公告)号：US20210333906A1
公开(公告)日：2021-10-28
申请号：US17148269
申请日：2021-01-13
Inventor： Hyung Wook NOH , Joo Yong SIM , Chang-Geun AHN
Abstract: Disclosed is an electronic device. The electronic device includes an impedance measuring unit including electrodes, that applies a first measurement signal of a first frequency to a user, obtains first biometric impedance data, based on first electrodes among the electrodes, and obtains second biometric impedance data, based on second electrodes among the electrodes, and a signal processor that extracts first feature data of the user, based on the first biometric impedance data and the second biometric impedance data. The first feature data may be based on a ratio between a value of the first biometric impedance data and a value of the second biometric impedance data.
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Patent Agency Ranking
6.发明申请公开(公告)号：US20200159902A1
公开(公告)日：2020-05-21
申请号：US16687366
申请日：2019-11-18
Inventor： Hyung Wook NOH , Joo Yong SIM , Chang-Geun AHN , Bong Kyu KIM
IPC: G06F21/34 , A61B5/0484 , A61B5/117 , G06F21/32
Abstract: Provided is a personal authentication device based on an auditory brainstem response signal. The personal authentication device includes a signal generator, a signal acquirer, and a signal processor. The signal generator may output an auditory stimulus to an ear of a user, using a sound generator. The signal acquirer may acquire a first reference potential corresponding to a first interval, from a first electrode in close contact with the other ear of the user, and acquire a first evoked potential corresponding to the first interval from a second electrode in close contact with the ear, based on the first reference potential. The signal processor may generate a first auditory brainstem response signal, based on the first reference potential and the first evoked potential, generate authentication data for the user from the first auditory brainstem response signal, and compare the authentication data with registration data to authenticate the user.
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公开(公告)号：US20200047180A1
公开(公告)日：2020-02-13
申请号：US16536031
申请日：2019-08-08
Inventor： Kwang Hyo CHUNG , Chul HUH , Bong Kyu KIM , Jin Tae KIM , Hyung Wook NOH , Joo Yong SIM , Chang-Geun AHN , Eun-Ju JEONG
IPC: B01L3/00
Abstract: Provided is a centrifugal device. The centrifugal device includes a centrifugal part configured to provide an intermediate chamber into which a centrifugal object is put and a driving part disposed on a rotation axis passing through the intermediate chamber.
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8.发明公开公开(公告)号：US20240192187A1
公开(公告)日：2024-06-13
申请号：US18509735
申请日：2023-11-15
Inventor： Jae Hun CHOI , Do Hyeun KIM , Hwin Dol PARK , Seunghwan KIM , Hyung Wook NOH , Chang-Geun ANH , YongWon JANG , Kwang Hyo CHUNG
IPC: G01N33/00
CPC classification number: G01N33/0034 , G01N33/0011 , G01N33/0062 , G01N2033/0019
Abstract: Disclosed is an artificial intelligence apparatus for detecting a target gas, which includes a mixed gas measurement unit that measures a mixed gas collected in a plurality of domains through a sensor array to generate sensing data including heterogeneous domain measurement data measured from the mixed gas collected in a domain different from the target gas and target domain measurement data measured from the mixed gas collected from the same domain as the target gas, a heterogeneous intelligence model deep learning unit that receives the heterogeneous domain measurement data to train a heterogeneous intelligence model, a target intelligence model deep learning unit that receives the heterogeneous intelligence model and the target domain measurement data to train a target intelligence model, and a target gas detection unit that determines whether an environmental gas includes the target gas using the target intelligence model.
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公开(公告)号：US20230176594A1
公开(公告)日：2023-06-08
申请号：US17716889
申请日：2022-04-08
Inventor： Kwang Hyo CHUNG , Chang Geun AHN , Do Hyun KIM , Seung Hwan KIM , Hyung Wook NOH , Hwin Dol PARK , Yong Won JANG , Jae Hun CHOI
CPC classification number: G05D7/0664 , F16L41/008 , F16L41/03
Abstract: Provided is a multi-port gas flow rate control apparatus. The multi-port gas flow rate control apparatus includes a gas supply chamber configured to supply a measurement gas input through one gas inflow channel while allowing the measurement gas to diverge into a plurality of flows, a plurality of gas divergence flow channels each having one side connected to the gas supply chamber and configured to transfer the measurement gas flowing through the gas supply chamber to a plurality of gas sensors, respectively, and a gas measurement chamber configured to accommodate the plurality of gas sensors, including the plurality of gas divergence flow channels configured to connect to the gas supply chamber to the plurality of gas sensors to transfer a gas outflow diverging through the gas supply chamber to the plurality of accommodated gas sensors, and configured to discharge the gas outflow sensed by the plurality of gas sensors.
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公开(公告)号：US20210334348A1
公开(公告)日：2021-10-28
申请号：US17239005
申请日：2021-04-23
Inventor： Joo Yong SIM , Hyung Wook NOH , Chang-Geun AHN
Abstract: A biometric authentication apparatus is provided. The biometric authentication apparatus includes one or more converters that convert a transmit signal of an electrical signal into a vibration signal of a mechanical signal and transmit the vibration signal vibrating within a set frequency range to a user, one or more sensor that receive a biometric signal corresponding to the vibration signal from the user and convert the biometric signal into a receive signal of an electrical signal, an authentication module that extracts anatomical feature information of the user from the receive signal and determines whether the user is a registered user based on the anatomical feature information, and a memory that stores a database for the registered user. The biometric signal is a frequency-based signal modified to include the anatomical feature information while the vibration signal passes through at least a portion of the body of the user.
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