Industrial Technology Research Institute

Pei-Fang Liang

Yu-Ting Cheng

Lien-Yi Cho

Wei-Hung Hsu

Kai-Cheng Chang

Shih-Hsien Cheng

Ming-Hsiu Hsu

Chia-Yuan Chang

Cheng-Ting Lin

Yung-Chang Chen

Yi-Ru Chen

Guang-Chyeng Fang

Wae-Honge Chen

Guang-Chyeng Fan

Kai Cheng Chang

Pin-Cha Hsu

Wu-chi Ho

Shih-hsien Cheng

A power cable measurement device is provided, which may include a casing, a plurality current sensing modules and a plurality of voltage sensing modules. The casing may be used to envelope a three-phase three-wire power cable. The voltage sensing modules and the current sensing modules may be disposed on the casing and spaced at regular intervals; any two adjacent current sensing modules may be divided by one voltage sensing module. The power cable measurement device can accurately estimate the electricity information of the three-phase three-wire power cable according to a characteristic curve database constructed by pre-measurement, the induced voltages of the voltage sensing modules and the induced voltages of the current sensing modules.

Power cable measurement device and measurement method thereof

A voltage sensor and the method for compensating installation position variation thereof are disclosed. The voltage sensor may comprise a casing, two substrates, a plurality of voltage sensing units and an iterative operation unit. One side of the casing may include two grooves. The substrates may be respectively disposed in the grooves, and an accommodating space is formed between the substrates. The voltage sensing units may be disposed on the substrates to measure a plurality voltage parameters of a dual-wire power cable disposed in the accommodating space. The iterative operation unit can be disposed in the casing and connected to the voltage sensing units, wherein the iterative operation unit can perform an iterative operation process according to a compensation database and the voltage parameters for compensating the horizontal and vertical displacements occurring when installing the voltage sensor on the cable, and calculate the estimated input voltage of the cable.

Non-contact type voltage sensor for dual-wire power cable and method for compensating installation position variation thereof

A compensating apparatus for installing variation of a non-contact current sensor on a two-wire power cable includes a non-contact current sensor, a sensing element characteristic measuring unit and a non-contact current measurement module. The non-contact current sensor mounted top to the two-wire power cable further has a first current sensor, a second current sensor, and a third current sensor. The sensing element characteristic measuring unit is to construct a space characteristic measuring database for the non-contact current sensor respective to the two-wire power cable. The non-contact current measurement module is to pair the space characteristic measuring database so as to compute and further output a measured value of the current I in the two-wire power cable.

Compensating apparatus for a non-contact current sensor installing variation in two wire power cable

A micro-filter for filtering blood cells has a plurality of filtering channel structures, each having a first through hole and a first concave portion connecting to each other, and a plurality of through channel structures respectively connect to the filtering channel structures. Each defines a second through hole opposite the first concave portion, whereby the filtering channel structures are respectively attached to the through channel structures to provide more than two filtering effects.

Micro-filter for filtering blood cells

An adjustable eddy electrostatic precipitator, including a main body, an electrode array, an adjustable opening and a precipitating device. The main body has an inner space with an air guiding plate of helical shape, an entrance for air and an exit for air. The electrode array is placed close to the entrance, ionizing air as well as particles floating therein. The adjustable opening is located at the exit, having an adjustable aperture. The precipitating device is connected with a bias high voltage for adsorbing ionized particles. Air entering the main body through the entrance is ionized, ionizing particles floating therein. Ionized particles are driven towards a single zone and are collected depending on size and charge in an adjustable manner.

Adjustable eddy electrostatic precipitator

An inertia device is constructed by both suspension structure and micro-electroplating structure. The suspension structure may be manufactured by surface micromachining technique of sacrificial layer process or bulk micromachining technique incorporating with thin film process. One side of the suspension structure is arranged firmly to a supporting piece, so that another side of the suspension structure is in a suspension state. The suspension side of the suspension structure is made as micro-electroplating structure through the micro-electroplating process and functions as inertia mass for an inertia sensor. The size of the micro-electroplating structure may be changed through the micro-electroplating process, such that the inertia sensor may be adapted for sensing in different levels. Furthermore, a microstructure of high aspect ratio may be achieved by taking the advantage of a metal during the selection of a processing material, such that the objective for lateral sensing or driving signal may be fulfilled.

Inertia sensor

The invention is to provide a vibratory double-axially sensing micro-gyroscope, which includes a base, on center of which a supporting hub is arranged, and plural suspending arms are extended outwardly with equal altitude and in radial direction from the supporting hub and, at the outside end of the suspending arm, a platform is formed, and a capacitance sensing electrode or a static-electricity driving electrode is plated respectively at each side of the platform top, below which a static-electricity driving electrode or a capacitance sensing electrode is arranged; take a preferred embodiment of the present invention for example, if the capacitance sensing electrode is arranged at top of the platform and the static-electricity driving electrode is arranged below the platform, then the suspending arm and the platform will vibrate vertically by the attraction of the static-electricity when applying driving voltage, and the vibratory phase difference between two adjacent suspending arms and the platform is 180 degrees; when the gyroscope is rotated horizontally, the suspending arm and the platform will generate horizontal displacement caused by Coriolis force and, by measuring the change of capacitance value, the magnitude of the angular velocity of vibration is obtained; since its structure has symmetrical property, so it has sensing ability in both X or Y axes and, because it has superior stability and is able to resist environment noise and vibration, its sensing capability is enhanced and, since its machining method is simple, so it is adapted for mass production for having lower manufacturing cost.

Growing community of inventors

Hsinchu County, Taiwan

Pei-Fang Liang