公开(公告)号：US12123758B2

公开(公告)日：2024-10-22

申请号：US17546439

申请日：2021-12-09

Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE

Inventor： Sung Q Lee ,  Joho Yun ,  Chang Han Je ,  Gunn Hwang

IPC: G01F1/663 ,  G01F1/66

CPC classification number: G01F1/663 ,  G01F1/662

Abstract: 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.

公开(公告)号：US09362783B2

公开(公告)日：2016-06-07

申请号：US14192508

申请日：2014-02-27

Applicant: Electronics and Telecommunications Research Institute

Inventor： Sung Q Lee ,  Gunn Hwang ,  WooSub Youm

IPC: H04B1/06 ,  H02J17/00

CPC classification number: H02J50/15 ,  H02J7/025 ,  H02J17/00 ,  H02J50/90

Abstract: 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.

Abstract translation: 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。

公开(公告)号：US09030916B2

公开(公告)日：2015-05-12

申请号：US13783185

申请日：2013-03-01

Applicant: Electronics and Telecommunications Research Institute

Inventor： Kang-Ho Park ,  Sung Q Lee

IPC: G01S15/88 ,  G01S15/04 ,  G08B17/00

CPC classification number: G01S15/88 ,  G01S15/04 ,  G08B17/00

Abstract: Disclosed are a method and a system for monitoring a fire based on a detection of sound field variation. The system for monitoring a fire based on a detection of sound field variation includes: a sound generator outputting a sound wave within a defined space according to input voltage; a sound receiver receiving the sound wave within the defined space and obtaining a sound pressure from the received sound wave; and a fire monitor using a sound transfer function representing a ratio of the sound pressure obtained by the sound receiver to input voltage of the sound generator in a preparation mode to calculate reference sound pressure information, using the sound transfer function in a monitoring mode to calculate current sound pressure information, and comparing the reference sound pressure information with the current sound pressure information to determine whether a fire occurs.

Abstract translation: 公开了一种基于声场变化检测来监视火灾的方法和系统。 基于声场变化检测来监视火灾的系统包括：声音发生器，根据输入电压在限定的空间内输出声波; 在所述定义的空间内接收所述声波并从所接收的声波获得声压的声音接收器; 以及火灾监视器，其使用表示在准备模式中由声音接收器获得的声压与声音发生器的输入电压的比率的声音传递函数，以使用监视模式中的声音传递函数来计算参考声压信息，以计算 当前声压信息，并且将参考声压信息与当前声压信息进行比较，以确定是否发生火灾。

公开(公告)号：US08605920B2

公开(公告)日：2013-12-10

申请号：US13791039

申请日：2013-03-08

Applicant: Electronics and Telecommunications Research Institute

Inventor： Hye Jin Kim ,  Sung Q Lee ,  Kang Ho Park ,  Jong Dae Kim

IPC: H01L25/00

CPC classification number: H04R31/003 ,  H04R19/005 ,  H04R31/00 ,  H04R2499/11

Abstract: A condenser microphone having a flexure hinge diaphragm and a method of manufacturing the same are provided. The method includes the steps of: forming a lower silicon layer and a first insulating layer; forming an upper silicon layer on the first insulating layer; forming sound holes by patterning the upper silicon layer; forming a second insulating layer and a conductive layer on the upper silicon layer; forming a passivation layer on the conductive layer; forming a sacrificial layer on the passivation layer; depositing a diaphragm on the sacrificial layer, and forming air holes passing through the diaphragm; forming electrode pads on the passivation layer and a region of the diaphragm; and etching the layers to form an air gap between the diaphragm and the upper silicon layer. Consequently, a manufacturing process may improve the sensitivity and reduce the size of the condenser microphone.

Abstract translation: 提供一种具有挠性铰链膜片的电容麦克风及其制造方法。 该方法包括以下步骤：形成下硅层和第一绝缘层; 在所述第一绝缘层上形成上硅层; 通过图案化上硅层形成声孔; 在上硅层上形成第二绝缘层和导电层; 在导电层上形成钝化层; 在钝化层上形成牺牲层; 在牺牲层上沉积隔膜，并形成穿过隔膜的气孔; 在所述钝化层上形成电极焊盘和所述隔膜的区域; 并蚀刻各层以在隔膜和上硅层之间形成气隙。 因此，制造工艺可以提高电容传声器的灵敏度和减小尺寸。