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公开(公告)号：US12123758B2
公开(公告)日：2024-10-22
申请号：US17546439
申请日：2021-12-09
发明人： Sung Q Lee , Joho Yun , Chang Han Je , Gunn Hwang
摘要： Disclosed is a method of operating a flow sensor according to an embodiment of the present disclosure, which includes receiving an ultrasonic signal reflected from a particle, generating first and second digital, generating a first Doppler frequency based on the first and second digital signals, a predetermined number of samples, and a first time period, comparing the first Doppler frequency with a second reference frequency, when the first Doppler frequency is less than a first reference frequency, down-sampling the predetermined number of samples to a first sampling frequency or a second sampling frequency, generating a second Doppler frequency based on the first and second digital signals, the number of down-sampled samples, and a second time period determining an output frequency based on the second Doppler frequency when the first Doppler frequency is less than a first reference frequency, and obtaining flow information of the particle based on the output frequency.
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公开(公告)号：US09362783B2
公开(公告)日：2016-06-07
申请号：US14192508
申请日：2014-02-27
发明人： Sung Q Lee , Gunn Hwang , WooSub Youm
摘要： Provided is a wireless power transmission apparatus. The apparatus includes an ultrasound transmitter generating an ultrasound signal in response to an external source voltage and transmitting the generated ultrasound signal to a medium layer and an ultrasound receiver receiving the ultrasound signal through the medium layer and converting the received ultrasound signal into a driving voltage. The ultrasound transmitter and receiver are manufactured to control impedance values thereof to be matched with each other and a distance between the ultrasound transmitter and receiver is controlled according to predetermined distance conditions.
摘要翻译： 提供一种无线电力传输装置。 该装置包括：超声波发射器，响应于外部源电压产生超声信号，并将产生的超声信号传输到介质层;以及超声波接收器，通过介质层接收超声波信号，并将接收到的超声信号转换为驱动电压。 制造超声波发射器和接收器以控制其阻抗值彼此匹配，并且根据预定距离条件来控制超声波发射器和接收器之间的距离。
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公开(公告)号：US10390756B2
公开(公告)日：2019-08-27
申请号：US15424477
申请日：2017-02-03
发明人： WooSub Youm , Sung Q Lee , Gunn Hwang
IPC分类号： A61N1/20 , A61B5/00 , A61N1/36 , A61B5/0476 , A61B5/0402 , A61B5/0488 , A61B5/0496
摘要： The circuit may include bio-stimulating signal generating circuit which generates a bio-stimulating signal in a bio-stimulating mode, a bio-signal electrode which delivers the bio-stimulating signal generated in the bio-stimulating mode and receives a bio-signal in a bio-signal measuring mode, a switch block which is turned on when a voltage of the bio-stimulating signal is greater than a first reference voltage which is greater than a second reference voltage or lower than the second reference voltage, first and second resistors, and a bio-signal measuring circuit which measures voltage signals divided by the first and second resistors or measures a signal of the bio-signal electrode according to whether the switch block is turned on. The first and second resistors may be serially connected between the bio-signal electrode and the switch block, and divide a voltage of a signal of the bio-signal electrode when the switch block is turned on.
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公开(公告)号：US10078069B2
公开(公告)日：2018-09-18
申请号：US14949628
申请日：2015-11-23
发明人： Gunn Hwang , Sung Q Lee , WooSub Youm
CPC分类号： G01N29/024 , E21B47/101 , E21B47/102 , F16L2201/30 , F17D5/06 , G01M3/24 , G01N29/07 , G01N2291/011
摘要： The inventive concept relates to a device that detects a leak of a liquid leaked from a sinkhole, water pipe or oil pipeline under the ground. In the detection device of the inventive concept, a plurality of reception devices disposed on the surface of the earth simultaneously receive an ultrasonic signal transmitted from a transmission device under the ground and a radio frequency (RF) signal synchronized with the ultrasonic signal. Also, by measuring an arrival time of the ultrasonic signal by using the wireless signal received by each reception device as a triggering signal, a leak range of a liquid leaked from a sinkhole, water pipe or oil pipeline on a signal path between the transmission device and the reception device is detected.
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公开(公告)号：US10008888B2
公开(公告)日：2018-06-26
申请号：US14335822
申请日：2014-07-18
发明人： WooSub Youm , Sung Q Lee , Gunn Hwang
CPC分类号： H02J50/80 , H02J7/025 , H02J7/042 , H02J17/00 , H02J50/10 , H02J50/12 , H02J50/15 , H02J2007/0037
摘要： Provided is a wireless power transmission system. The wireless power transmission system includes a power supply unit generating amplified power; a wireless power transmission unit receiving and converting the amplified power into wireless power; a wireless power reception unit receiving and converting the wireless power into charging power; and a charging unit receiving the charging power, wherein the charging unit includes a battery to store the charging power and the power supply unit includes a power detection unit identifies the charged state of the battery based on the amplified voltage and amplified current of the amplified power.
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6.发明授权Ultrasonic wireless power transmitter and receiver apparatuses, and method for wireless charging thereof 有权超声波无线电力发射机和接收机装置及其无线充电方法公开(公告)号：US09240688B2
公开(公告)日：2016-01-19
申请号：US13671486
申请日：2012-11-07
发明人： Gunn Hwang , Sung Q Lee , Woo Seok Yang , JongDae Kim
摘要： Disclosed are ultrasonic wireless power transmitter and receiver apparatuses, and a method for wireless charging thereof. A method for wireless charging according to the present disclosure includes: transmitting, by an ultrasonic wireless power transmitter apparatus, an wakeup signal to an ultrasonic wireless power receiver apparatus; calculating, by the ultrasonic wireless power transmitter apparatus, a charging time according to a charging status information received from the ultrasonic wireless power receiver apparatus; generating, by the ultrasonic wireless power transmitter apparatus, an ultrasonic signal, amplifying the generated ultrasonic signal to predetermined voltage and thereafter; charging, by the ultrasonic wireless power transmitter apparatus, the ultrasonic wireless power receiver apparatus for the calculated time and thereafter; and determining, by the ultrasonic wireless power transmitter apparatus, whether secondary charging is to be performed according to a charged status information received from the ultrasonic wireless power receiver apparatus.
摘要翻译： 公开了超声波无线电力发射机和接收机装置及其无线充电的方法。 根据本公开的无线充电方法包括：通过超声波无线电力发送装置向超声波无线电力接收装置发送唤醒信号; 根据从所述超声波无线电力接收装置接收到的充电状态信息，计算所述超声波无线电力发送装置的充电时间; 通过所述超声波无线电力发送装置生成超声波信号，将所生成的超声波信号放大到预定的电压，之后; 超声波无线电力发送装置对计算出的时间和之后的超声波无线电力接收装置进行充电; 以及通过所述超声波无线电力发送装置，根据从所述超声波无线电力接收装置接收到的充电状态信息来判断是否进行二次充电。
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公开(公告)号：US11486810B2
公开(公告)日：2022-11-01
申请号：US16709986
申请日：2019-12-11
发明人： Woo Seok Yang , Sung Q Lee , Chang Han Je , Gunn Hwang , Hyung Kun Lee
摘要： The present invention relates to a fluorescence sensor for measuring microalgae and a method of operating the same. The fluorescence sensor for measuring the microalgae includes a fluorescence measurement unit including a light emitter configured to irradiate excitation light onto a measurement region and a detector configured to measure fluorescence emitted from the measurement region, an algae control unit configured to form a node and an antinode of an ultrasonic standing wave in the measurement region to control an algal density, and a signal processing unit configured to calculate the algal density using fluorescence intensity signals according to an operation mode of the algae control unit.
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8.发明授权Charging device with piezoelectric-composite and ultrasonic apparatus with the same 有权具有压电复合和超声波装置的充电装置公开(公告)号：US09093633B2
公开(公告)日：2015-07-28
申请号：US13937125
申请日：2013-07-08
发明人： Gunn Hwang , WooSub Youm , Sung Q Lee
IPC分类号： H01L41/113 , H01L41/047 , H01L41/18 , H02N2/18
CPC分类号： H01L41/047 , H01L41/0475 , H01L41/113 , H01L41/183 , H02N2/18
摘要： Provided is an ultrasonic apparatus. The ultrasonic apparatus may include a charging device, a circuit device electrically connected to the charging device, and a housing part for packaging the charging device and the circuit device. Here, the charging device may include a lower electrode, an upper electrode provided on the lower electrode, a plurality of pillar-shaped piezoelectric composites provided between the lower and upper electrodes, and an electrolyte layer provided between the lower and upper electrodes to fill spaces between the pillar-shaped piezoelectric composites.
摘要翻译： 提供了一种超声波装置。 超声波装置可以包括充电装置，电连接到充电装置的电路装置和用于封装充电装置和电路装置的壳体部分。 这里，充电装置可以包括下电极，设置在下电极上的上电极，设置在下电极和上电极之间的多个柱状压电复合体，以及设置在下电极和上电极之间以填充空间的电解质层 柱状压电复合材料之间。
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