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公开(公告)号：KR101006971B1
公开(公告)日：2011-01-12
申请号：KR1020100101722
申请日：2010-10-19
Applicant: (주)대우건설 , 성균관대학교산학협력단
CPC classification number: G01N29/04 , E04G21/246 , G01N29/348 , G01N29/44 , G01N33/383
Abstract: PURPOSE: A device and a method for estimating the improvement in concrete curing strength using guided ultrasonic wave are provided to reduce construction time by optimizing curing time of concrete. CONSTITUTION: A device for estimating the improvement in concrete curing strength using guided ultrasonic wave comprises a piezoelectric sensor(10), an arbitrary waveform generator(20), a self sensing circuit(30), a digitizer(40), and a controller(50). The piezoelectric sensor is installed in the inner side or the outer side of a concrete structure and generates guided ultrasonic wave by receiving a frequency signal from outside. And the piezoelectric sensor receives reflected wave from the concrete structure. The arbitrary waveform generator is connected to the piezoelectric sensor. The self sensing circuit converts the reflected wave into a voltage signal. The digitizer eliminates noise from the voltage signal and extracts the frequency in a specified area. The controller measures a strength change of the concrete structure.
Abstract translation: 目的：提供一种使用引导超声波估算混凝土固化强度提高的装置和方法，通过优化混凝土的固化时间来缩短施工时间。 构成：使用引导超声波估计混凝土固化强度的改善的装置包括压电传感器（10），任意波形发生器（20），自感电路（30），数字化仪（40）和控制器 50）。 压电传感器安装在混凝土结构的内侧或外侧，并通过从外部接收频率信号来产生引导超声波。 并且压电传感器从混凝土结构接收反射波。 任意波形发生器连接到压电传感器。 自感电路将反射波转换成电压信号。 数字化仪消除了电压信号的噪声，并提取了指定区域的频率。 控制器测量混凝土结构的强度变化。
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公开(公告)号：KR101864073B1
公开(公告)日：2018-06-04
申请号：KR1020170043459
申请日：2017-04-04
Applicant: 성균관대학교산학협력단
IPC: A23B7/152
CPC classification number: A23B7/152
Abstract: 본발명은휴대용과일숙성도조절장치로서, 과일의숙성에영향을미치는식물호르몬인에틸렌의흡수와방출을조절함으로써소비자가직접과일의신선도유지및 숙성도조절을할 수있는장치에관한것이다. 본발명의일 실시예에따른휴대용과일숙성도조절장치는, 내부공간을포함하며, 상기내부공간에에틸렌가스방출제를포함하고, 상기에틸렌가스방출제의방출을가능하게하는하나이상의개구를포함하는, 내부캡슐; 및상기내부캡슐을포함한내부공간을포함하고, 상기내부캡슐을외부와차단하는내벽을포함하며, 상기내벽의외부에에틸렌가스흡수제를포함하는외부공간을포함하고, 상기외부공간에는상기에틸렌가스흡수제의방출을가능하게하는하나이상의개구를포함하는, 외부캡슐을포함하고, 상기외부캡슐의외부공간에포함된에틸렌가스흡수제에의해에틸렌가스의흡수가이루어지고, 상기외부캡슐이제거되면상기내부캡슐의내부공간에포함된에틸렌가스방출제에의해에틸렌가스의방출이이루어져과일의숙성도가조절된다.
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公开(公告)号：KR101184049B1
公开(公告)日：2012-09-28
申请号：KR1020110144039
申请日：2011-12-28
Applicant: (주)대우건설 , 주식회사 코센 , 성균관대학교산학협력단
CPC classification number: G01N29/04 , G01B17/04 , G01N29/2437 , G01N33/383 , G01N2291/0232 , G01N2291/02827
Abstract: PURPOSE: A flush type smart sensor for estimating the strength of concrete by using a guided wave measurement is provided to protect the sensor from external impact when burying the sensor into concrete and to efficiently measure guided wave signals by providing a transmitting passage of guided waves. CONSTITUTION: A flush type smart sensor for estimating the strength of concrete by using a guided wave measurement comprises a body(110), a guided wave transmitting terminal(120), and a guided wave receiving terminal(130). The body is formed in to a plate form of a steel material and comprises a pair of discharging holes, thereby providing a transmitting passage of guided waves. The guided wave transmitting terminal receives frequency signals input from outside, thereby generating guided waves and transmitting the same to a concrete structure. The guided wave receiving terminal receives reflective waves reflected from the concrete structure and transmitted from the body, thereby outputting to outside.
Abstract translation: 目的：提供一种用于通过使用导波测量来估计混凝土强度的冲洗型智能传感器，用于在将传感器埋入混凝土中时保护传感器免受外部冲击，并通过提供导波传输通道有效测量导波信号。 构成：用于通过使用导波测量来估计混凝土的强度的冲洗型智能传感器包括主体（110），导波发射端子（120）和导波接收端子（130）。 主体形成为钢材的板状，并且包括一对排出孔，从而提供导波的传送通道。 导波发射端子接收从外部输入的频率信号，从而产生导波并将其传输到混凝土结构。 导波接收端子接收从混凝土结构反射并从身体传输的反射波，从而输出到外部。
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公开(公告)号：KR101184048B1
公开(公告)日：2012-09-27
申请号：KR1020110144038
申请日：2011-12-28
Applicant: (주)대우건설 , 주식회사 코센 , 성균관대학교산학협력단
CPC classification number: G01M7/02 , G01B17/04 , G01N27/02 , G01N29/04 , G01N33/383 , G01N2291/02827
Abstract: PURPOSE: A device and a method for estimating the initial strength of concrete using impedance are provided to bury a piezoelectric element sensor in the inside of a concrete structure and to evaluate the initial strength by estimating the strength for 20 hours after placing concrete by using a change of the impedance in the piezoelectric element sensor. CONSTITUTION: A device and a method for estimating the initial strength of concrete using impedance comprises a piezoelectric element sensor(110), an impedance measuring device(120), and a controller(130). The piezoelectric element sensor is buried in the inside of a concrete structure and generates vibration by receiving frequency signals input from outside and outputs by converting responses by the vibration into voltage signals. The impedance measuring device is connected to the piezoelectric sensor with wires, thereby generating and outputting auxiliary voltage signals to the piezoelectric element sensor per a predetermined time unit and measures an impedance value by receiving the voltage signals being output from the piezoelectric element sensor. The controller substitutes the maximum value of the impedance value measured by the impedance measuring device with an initial strength estimating equation, thereby estimating the initial strength of the concrete structure.
Abstract translation: 目的：提供一种用于估计使用阻抗的混凝土的初始强度的装置和方法，以将压电元件传感器埋入混凝土结构的内部，并且通过使用混合物估算混凝土之后20小时的强度来评估初始强度 压电元件传感器中阻抗的变化。 构成：使用阻抗估计混凝土的初始强度的装置和方法包括压电元件传感器（110），阻抗测量装置（120）和控制器（130）。 压电元件传感器埋在混凝土结构的内部，通过接收从外部输入的频率信号并通过将振动响应转换成电压信号而产生振动。 阻抗测量装置通过导线连接到压电传感器，从而以预定时间单位产生并输出辅助电压信号到压电元件传感器，并通过接收从压电元件传感器输出的电压信号来测量阻抗值。 控制器用初始强度估计方程代替由阻抗测量装置测量的阻抗值的最大值，从而估计混凝土结构的初始强度。
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