Lg Electronics Inc.

Hyundai Motor Company

Kangnam University Industry-academia Cooperation Foundation

Young Hyun Lee

Jong Hwan Kim

Ju Hwan Yun

Dong Joo You

Sae Hoon Kim

Duck Whan Kim

Young Bum Kum

Kwi Seong Jeong

Jung Do Suh

Myung Ju Jung

Seung Chan Oh

Seung Ryeol Yoo

Jong Guen Yoon

A technique is described herein for monitoring the operational state of a fuel cell stack by the detection of nonlinearity in such a manner that an external test signal for frequency response is generated and applied to the fuel cell stack during operation, the resulting signal output from the fuel cell stack is measured, and the harmonic content of the measured signal is analyzed, the method including: applying a multiple frequency test signal comprising at least two sinusoidal waves as the test signal for frequency response to the fuel cell stack; and analyzing the resulting current or voltage signal output from the fuel cell stack.

Monitoring the operational state of a fuel cell stack

An automatic liquid dispenser is disclosed wherein a liquid adjustor is disposed to prevent liquid from splashing outside of a receptacle, thereby saving the automatic liquid dispenser from being polluted with splashed liquid. A receptacle and level detector emits ultrasound to the receptacle and detects the ultrasound reflected from the receptacle to generate a signal. A controller receives the signal from the receptacle and level detector to control the liquid adjusting unit, and an identifying mark at the receptacle accommodator facilitates the correct arranging of the receptacle.

Automatic liquid dispensers

An automatic liquid dispenser and automatic liquid dispensing method are disclosed capable of transmitting ultrasonic to an upper surface of a receptacle, and receiving the ultrasonic reflected from the upper surface of the receptacle to detect a receptacle height, whereby the receptacle height may be freely detected regardless of shape, material and surface state of the receptacle, and regardless of a position where the receptacle is placed.

Automatic liquid dispenser and automatic liquid dispensing method

An automatic liquid dispenser and a refrigerator with the same is disclosed wherein a level of liquid to be ejected into a receptacle can be established, and a display module is mounted to thereby enhance a user convenience, and wherein the automatic liquid dispenser is mounted on the refrigerator to allow being independently driven and manufactured.

Automatic liquid dispenser and refrigerator with the same

Growing community of inventors

Seoul, South Korea

Young Hyun Lee