Korea Institute of Industrial Technology

Dae Yeong Im

Hyun Rok Cha

Chang Seog Kang

Hyoung Uk Nam

Ik Hyun Oh

Tae Won Jeong

Sung Ho Lee

Jin Ho You

Chang Youn Kang

Jae Young Ahn

Bong Kee Park

Disclosed herein is an apparatus and method for detecting a fault in a digitizer. The apparatus includes a function generator for generating test signals, a transmitting switch for transmitting the test signals generated by the function generator to a selective part or all of X- and Y-channels of a transmitting digitizer, a receiving digitizer arranged in a shape identical to that of the transmitting digitizer to be adjacent to the transmitting digitizer, the receiving digitizer receiving reception signals produced by the transmitting digitizer, a receiving switch for receiving resulting signals, generated by the receiving digitizer in response to the reception signals, from a selective part or all of X- and Y-channels of the receiving digitizer, a channel controller for controlling the transmitting switch and the receiving switch, a data collection unit for collecting the resulting signals, and an analysis unit for analyzing the collected resulting signals.

Apparatus and method for detecting fault in digitizer

A washing machine using ultrasonic vibrations, which can allow a user to at home easily and efficiently wash the laundry that needs hand washing or dry-cleaning. The washing machine includes: a body having an inner space of a predetermined volume; a washing tub installed in the body, with a water supply pipe connected to a side of the washing tub so as to supply washing water or a detergent into the tub and with a drain pipe connected to the side of the tub at a position opposite that of the water supply pipe so as to drain used water or used detergent; a cover mounted to a predetermined portion of the body so as to open or close the tub; and an ultrasonic generator installed in at least one predetermined portion of the tub so as to apply ultrasonic vibrations to a laundry contained in the tub.

Washing machine using ultrasonic vibrations

An optical coherence tomography (OCT) probe using lead zirconate titanate (PZT). In the OCT probe using PZT, a sine wave is induced from a vibrator made of a piezoelectric element, so that an image in which the scanning range is increased can be captured due to the vibration of the vibrator. A decrease in the vibration of the vibrator can be minimized by optimizing the position where the base fixes the vibrator.

OCT probe using PZT

Disclosed herein is an ultrasonic extrusion apparatus which causes resonance of an extrusion die using ultrasonic vibrations, thus reducing friction between the extrusion die and an extrusion material. The ultrasonic extrusion apparatus has an increased number of ultrasonic vibrators provided around the extrusion die in the circumferential direction to increase the vibration output, whereby when extruding a metal material such as a magnesium material, friction between the metal material and the extrusion die can be reduced, thus improving the performance of the extrusion process (preventing a reduction in an extrusion rate, generation of heat, cracking of a product, errors in measurements, etc.).

Ultrasonic extrusion apparatus for metal material

A solenoid valve controlled by wireless communication, in which the operation of the valve is controlled by wireless communication, thereby reducing costs and labors necessary for installation and maintenance. The solenoid valve includes a valve body having an inlet port, through which fluid is introduced, and an outlet port, through which fluid is discharged; a plunger movably mounted inside the valve body to open or close one or both of the inlet and outlet ports; a solenoid, which drives the plunger to a position, in which the plunger opens or closes one or both of the inlet and outlet ports, when electric power is supplied; and a communication module provided on the valve body. The communication module receives a wireless control signal transmitted from outside and controls the electric power supplied to the solenoid valve depending on the wireless control signal.

Growing community of inventors

Jeollanam-do, South Korea

Dae Yeong Im