Abstract: A device protects a vehicle air conditioning system and includes a pressure estimator to estimate a compressor refrigerant discharge pressure based on predetermined vehicle and air conditioning system information. The device includes a pressure switch to selectively transmit a cutting-off request signal for cutting off driving of the compressor depending on the compressor refrigerant discharge pressure. The device includes a controller to determine whether to allow the compressor to be driven based on the estimation discharge pressure determined by the pressure estimator and whether the pressure switch has transmitted a cutting-off request signal.

Abstract: Disclosed is an eyeball movement analysis system. The eyeball movement analysis system includes an image capturing unit configured to acquire a first image of an eyeball at a reference location and acquire a second image of the eyeball at a moved location, and an eyeball movement analyzing unit configured to calculate a rotational angle of the eyeball and a translational distance of the eyeball in a process of moving the eyeball from the reference location to the moved location through comparison of the first image and the second image.

Abstract: Disclosed is an eyeball movement analysis system. The eyeball movement analysis system includes an image capturing unit configured to acquire a first image of an eyeball at a reference location and acquire a second image of the eyeball at a moved location, and an eyeball movement analyzing unit configured to calculate a rotational angle of the eyeball and a translational distance of the eyeball in a process of moving the eyeball from the reference location to the moved location through comparison of the first image and the second image.

Abstract: The present invention relates to a nasolacrimal duct tube. A nasolacrimal duct tube, according to one embodiment of the present invention, comprises a lachrymal passage enabling lachrymal fluid to move between the inside and outside of the tube. According to the present invention, since lachrymal fluid can easily be discharged even while the tube is inserted into a human body, it is possible to decrease the possibility of inflammation occurring and the risk of infection, and it is possible to permanently leave the tube in the body without removing the tube after the operation.