National Applied Research Laboratories

Precision Instrument Development Center National Science Council

Precision Instrument Development Center

Instrument Technology Research Center

National Instrument Technology Research Center

Precision Instrument Development Ctr., National Science Council

Tai-Shan Liao

Chi-Hung Huang

Yung-Hsiang Chen

Wei-Chung Wang

Din Ping Tsai

Shih-Jie Chou

Chih-Chieh Wu

Kuo-Cheng Huang

Kuo-Chun Chang

Yung-Bin Lin

Feng-Chang Hsu

Chun-Jen Weng

Chun-Li Chang

Ho-Lin Tsay

Long-Jeng Lee

Yu-Hsuan Lin

Wei-Chieh Chiang

Chia-Wei Hsu

Chih-Yen Chen

Chih-Chung Yang

Chun-Fu Lin

Ting-Ming Huang

Franco Lin

Yi-Cheng Liu

Wen-Yi Chang

Cheng-Fang Ho

Lung-Cheng Lee

Fong-Zhi Chen

Shenq-Tsong Chang

Chien-Shing Lee

Shou-I Chen

Yu-Chi Sung

Yu-Chieh Chen

Yung-Kang Wang

Hung-Ta Hsiao

Meng-Huang Gu

Jung-Ru Yu

Ming Hung Huang

Ming-Li Chen

Bih-Chang Wang

Guo-Hao Lu

Min-Li Chen

Jung-Hsing Wang

Ji-Jur Huang

Chi-Hung Hwang

Hung-Ji Huang

Hsiao-Yu Chou

Tzu-Hsuan Wei

Jen-Yu Wen

Chih-Chung Chou

Tzi-Hung Chung

Bo-Han Lee

An integrated device includes a laser ranging module, a dual-branched fiber bundle, a beam splitter, and an image receiving module. The laser ranging module includes a light source, an optical receiver and a computing unit. The fiber bundle is disposed between the laser ranging module and the beam splitter. A target reflects a measuring beam emitted by the light source to form a reflected beam. The beam splitter splits the reflected beam into a first reflected beam and a second reflected beam. The first reflected beam is transmitted to the optical receiver through the fiber bundle to generate a measurement signal. The computing unit receives the measurement signal to calculate a distance between the target and the fiber bundle. The image receiving module is disposed on the optical path of the second reflected beam to receive the second reflected beam and displays the image of the target.

Integrated device for laser ranging and imaging

The present invention provides a reflective condensing interferometer for focusing on a preset focus. The reflective condensing interferometer includes a concave mirror set, a convex mirror, a light splitting element, and a reflecting element. The concave mirror set has first and second concave surface portions which are oppositely located on two sides of a central axis passing through the preset focus and are concave on a surface facing the central axis and the preset focus. Light is preset to be incident in parallel to the central axis in use. The convex mirror is disposed between the concave mirror set and the preset focus on the central axis, and is convex away from the preset focus. The light splitting element vertically intersects with the central axis between the convex mirror and the preset focus. The reflecting element is disposed between the light splitting element and the convex mirror.

Reflective condensing interferometer

A geomorphological structure monitoring system is disclosed, which comprises a supporting base having an accommodating space and a plurality of through holes, and at least a portion of the supporting base is embedded under a ground; a plurality of sensing devices arranged in the accommodating space vertically and embedded under the ground, the sensing devices may generate a sensing signal when the sensing devices are exposed from the ground due to the structural change of the ground; a signal processing device receiving and processing the sensing signal; and a transmission device connecting the sensing devices in series and the signal processing device.

Geomorphological structure monitoring system

Disclosed is a composite hydrological monitoring system, in which a counterweight component and a test component are respectively connected to both opposite ends of a strip and a plurality of sensors are disposed at different vertical positions. Accordingly, the scour depth can be measured by sensing the location of the counterweight component, whereas the water level and/or flow velocity can be determined by signals from the sensors. When the counterweight component moves downward with sinking of the riverbed, the strip would be pulled down and thus causes the test component to present a change in mechanical energy. Accordingly, the sinking depth can be measured by sensing the change of the mechanical energy. Additionally, since the water level variation would cause signal changes of the sensors arranged in a row along a vertical direction, the change of water level can be determined accordingly.

Composite hydrological monitoring system for detecting scour depth, water level and flow velocity

A flexible optical measuring device comprises an optical distance measuring module, an optical fiber adapter and an optical coupling module. The optical distance measuring module comprises a light source, an optical receiver and a computing unit. The optical fiber adapter is disposed and connected between the optical distance measuring module and the optical coupling module. The optical coupling module comprises a first optical fiber, a two-in-one optical coupler, a detector and a second optical fiber. A measuring beam is emitted from the light source and reaches the detector. The measuring beam then passes through the detector to the object and forms a reflected beam which is reflected back to the detector, then enters the second optical fiber and passes through the optical receiver and the optical receiver outputs a measurement signal. The computing unit calculates the distance between the object and a terminal of the detector accordingly.

Flexible optical measuring device

A method for determining if a wire guide roller having a plurality of V-shaped grooves, each having a copper line thereon, arranged column-by-column on a periphery direction thereof is failed after slicing a plurality of wafers is disclosed. Based on the disclosed technical means, the efficacy may be achieved that a damage situation may be automatically examined and notified to maintain a yield in the slicing process in an online high speed environment.

Damage determination of V-shaped groove guide on roller V-shaped

An apparatus is provided for detecting transmittance of a trench. The trench is located on an infrared-transmittable material, which can be a wafer. The wafer is obtained after a ditching process. An image of the wafer is fetched. The contrast of the image is greatly enhanced. The contrast-enhanced image is used for automated analysis of the transmittance of the trench. Accuracy of detecting the transmittance is improved. Hence, the present invention uses a simple structure to detect transmittance defects of the trench for ensuring goodness of the wafer.

Apparatus of detecting transmittance of trench on infrared-transmittable material and method thereof

A multi-image capture device capturing images by means of circular motion controls the shift movement, along a semi-circular measuring rod, of a moving mechanism by a location control device. Furthermore, a rotary control device is used to control the positioning and image-capturing angle of a second image capture device fixed on the rotary mechanism. Thereby, a first image capture device and the second image capture device are of a co-circle configuration where the optical axis of the first image capture device and the second image capture device overlap to form a center of the co-circle. Such a configuration can broaden the visual range of the image capture device, and allows quick calibration of the image capture device according to positioning of shift movement and image-capturing angles.

Multi-image capture device capturing images by means of circular motion

An image correlation for images having speckle pattern is evaluated. Modulation transfer function (MTF) curves of speckle-pattern images captured at different times are figured out. Whether a correlation value between the MTF curves meets a threshold is checked. If the correlation value is smaller than the threshold, speckle-pattern images are re-selected for re-figuring out the MTF curves and the correlation value. Thus, error of strain and displacement for digital image correlation owing to blurring images of the on-moving target object is figured out; calculation time of the digital image correlation is reduced; and accuracy on measuring physical parameters of the target object before and after movement is improved for digital image correlation.

Method of evaluating image correlation with speckle patter

An image-based refractive index measuring system comprises an optical device and an electronic device. The optical device is used to guiding an external light which is passed through an analyte. The electronic device comprises an image capture module, an image analyze module and a display module. The image capture module generates a first image by capturing the external light source. The image analyze module connects to the image capture module to receive the first image, and analyzes the first image in order to generate an analytical result comprising the refractive index of the analyte. The display module connects to the image analyze module to receive and display the analytical result.

Image-based refractive index measuring system

The present invention relates to a method for measuring cracks remotely and the device thereof. First, multiple laser spots with known a shape are projected onto a remote wall and beside a crack. Then, by using geometric calculations, the relative coordinates of the laser spots on the wall and the real distance can be given and used as the reference length of the crack. Next, a camera is used for taking a picture of the remote crack along with the laser spots; the image identification technology is used for calculating the relevant parameters of the crack. Thereby, to acquire the parameters of the crack, a user needs not to be present at the site for measuring at a short distance or placing a reference object, and thus providing safety and convenience.

Method for measuring cracks remotely and device thereof

The present invention discloses a gamma dose rate measurement system comprising a shielding device and an electronic device. The shielding device is arranged for masking a visible light, so that only a light source substantially being a gamma ray passes through the shielding device. The electronic device comprises a sensing module, an image analysis module and a display module. The sensing module generates a current signal after sensing the gamma ray; the image analysis module receives the current signal and generates an analysis result including a total gamma dose rate and a gamma energy spectrum; and the display module is arranged for displaying the analysis result.

Gamma dose rate measurement system

The present disclosure uses at least three cameras to monitor even a large-scale area. Displacement and strain are measured in a fast, convenient and effective way. The present disclosure has advantages on whole field, far distance and convenience.

Formation apparatus using digital image correlation

A non-visible particle detection device includes an optical module capable of converting an ionizing radiation into visible light. The optical module includes has an attachment unit that is configured to removably attach the optical module to the image capturing module of a mobile device. The image capturing module generates a photon digital image based on the photons converted from the ionizing radiation. The mobile device can be implemented with a radiation dose determining module to execute a radiation dose equivalent calculation method. Based on the pixel brightness analysis of the photon digital image, the radiation equivalent dose can be determined. This method sums up the total brightness of all pixels in the images, determines whether the total brightness is smaller than the minimum effective brightness, and determines the radiation equivalent dose when the total brightness is equal to or larger than the minimum effective brightness.

Non-visible particle detection based on smart phone

The present invention discloses a bridge structural safety monitoring system and a bridge structural safety monitoring method. The method includes the steps of capturing an image of a monitoring area of a bridge to create a standard image of the bridge operated at normal conditions, capturing images of the monitoring area of the bridge continuously to obtain monitoring images, comparing the standard image with the monitoring image to obtain a displacement correlation coefficient of the monitoring area of the bridge, and transmitting the displacement correlation coefficient to a central console, such that the central console can determine the using condition of the bridge according to the displacement correlation coefficient.

Bridge structural safety monitoring system and method thereof

Growing community of inventors

Hsinchu, Taiwan

Tai-Shan Liao