Abstract: An exterior camera system and a cleaning method thereof are provided. The exterior camera system includes a base unit that is fixed to a vehicle, a housing rotatably coupled with the base unit, and an imaging device including a camera module and having at least a portion inserted into the housing to move in a longitudinal direction of the housing. A wiper is disposed on an inside surface of the housing to face the camera module, and a washer fluid nozzle is disposed adjacent to the wiper. A controller receives a video from the camera module to set a rotation angle of the housing based upon driving conditions of the vehicle and to adjust extension of the imaging device.

Abstract: In one example, a semiconductor device can comprise a substrate, a device stack, first and second internal interconnects, and an encapsulant. The substrate can comprise a first and second substrate sides opposite each other, a substrate outer sidewall between the first substrate side and the second substrate side, and a substrate inner sidewall defining a cavity between the first substrate side and the second substrate side. The device stack can be in the cavity and can comprise a first electronic device, and a second electronic device stacked on the first electronic device. The first internal interconnect can be coupled to the substrate and the device stack. The encapsulant can cover the substrate inner sidewall and the device stack and can fill the cavity. Other examples and related methods are disclosed herein.

Abstract: An energy harvesting apparatus using an electroactive material includes an electricity generator including the electroactive material to generate a voltage due to deformation caused by an external stimulus, and an impact generator including a deformable and restorable material capable of repetitive deformation and restoration and configured to generate a dynamic behavior based on the repetitive deformation and restoration in the electricity generator. A stimulus of the impact generator with respect to the electricity generator enables energy harvest. An electrode unit for deformation includes an electricity generator including an electroactive material to generate a voltage due to deformation caused by an external stimulus, and an electrode part electrically connected to at least one surface of the electricity generator, and including an elastically deformable material to achieve relative deformation while in contact with the electricity generator.

Abstract: A sensing portion of the tension type smart shoe unit is arranged to extend across the width of thea sole of a wearer so that foot pressure applied through the sole is exerted thereon, and a connection portion of the tension type smart shoe unit is fixed by connection to a connecting portion of a circuit block. Thus, even when the foot pressure exerted is biased to the left or right while the wearer is walking, only a portion where the pressure is biased is not sensed in contrast with a conventional case in which piezoelectric sensors are mounted, but the sensing portion is deformed, and the magnitude of an electrical output signal corresponding to the deformation is calculated using an equation of a relationship with a load. Consequently, the amount of foot pressure may be precisely measured even with a simple configuration.

Abstract: A wearable device for assisting a human body movement according to an embodiment of the present disclosure includes a sensor including an inner electrode arranged at a center of an arbitrary circle, a plurality of outer electrodes arranged at regular intervals in a circumferential direction at positions spaced apart from the inner electrode in a radial direction so as to be arranged on a circumference of the circle, and a plurality of deformation elements disposed between the inner electrode and each of the outer electrodes and formed of a material whose resistance is changed by deformation; a controller configured to apply different control signals to an actuator according to a combination of different resistance values of the deformation elements of the sensor; and the actuator operating based on the control signals of the controller.

Abstract: A wearable device for assisting a human body movement according to an embodiment of the present disclosure includes a sensor including an inner electrode arranged at a center of an arbitrary circle, a plurality of outer electrodes arranged at regular intervals in a circumferential direction at positions spaced apart from the inner electrode in a radial direction so as to be arranged on a circumference of the circle, and a plurality of deformation elements disposed between the inner electrode and each of the outer electrodes and formed of a material whose resistance is changed by deformation; a controller configured to apply different control signals to an actuator according to a combination of different resistance values of the deformation elements of the sensor; and the actuator operating based on the control signals of the controller.

Abstract: An energy harvesting apparatus using an electroactive material includes an electricity generator including the electroactive material to generate a voltage due to deformation caused by an external stimulus, and an impact generator including a deformable and restorable material capable of repetitive deformation and restoration and configured to generate a dynamic behavior based on the repetitive deformation and restoration in the electricity generator. A stimulus of the impact generator with respect to the electricity generator enables energy harvest. An electrode unit for deformation includes an electricity generator including an electroactive material to generate a voltage due to deformation caused by an external stimulus, and an electrode part electrically connected to at least one surface of the electricity generator, and including an elastically deformable material to achieve relative deformation while in contact with the electricity generator.

Abstract: Techniques for providing in vivo environments to in vitro cells by periodically applying mechanical stimuli to in vitro cells are provided for effective studies on cell culture.

Abstract: Provided is a technique related to a new sensor unit which is flexible in that the sensor unit can be installed in various locations such as inside of a structure with a large curvature, and which can stably measure multi-directional deformation and very efficiently and wireless measure deformation information, and thus provided is a technique of a sensor structure which can be universally utilized in various systems for measuring deformation information.

Abstract: Techniques for providing in vivo environments to in vitro cells by periodically applying mechanical stimuli to in vitro cells are provided for effective studies on cell culture.

Abstract: Provided is a technique related to a new sensor unit which is flexible in that the sensor unit can be installed in various locations such as inside of a structure with a large curvature, and which can stably measure multi-directional deformation and very efficiently and wireless measure deformation information, and thus provided is a technique of a sensor structure which can be universally utilized in various systems for measuring deformation information.

Abstract: The present invention provides a method for manufacturing a metal/composite hybrid wheel for a vehicle by molding an inner rim of a composite material by compression and, at the same time, bonding an outer rim of a metal material to the inner rim to induce compressive residual stress in the bonding area by a difference in thermal expansion coefficient between the outer rim and the inner rim, thereby increasing the adhesive strength of the bonding area and the durability of the wheel. The present invention further provides a metal/composite hybrid wheel for a vehicle manufactured by the method.

Abstract: The present invention provides a method for manufacturing a metal/composite hybrid wheel for a vehicle by molding an inner rim of a composite material by compression and, at the same time, bonding an outer rim of a metal material to the inner rim to induce compressive residual stress in the bonding area by a difference in thermal expansion coefficient between the outer rim and the inner rim, thereby increasing the adhesive strength of the bonding area and the durability of the wheel. The present invention further provides a metal/composite hybrid wheel for a vehicle manufactured by the method.

Abstract: Disclosed herein is, a composite squirrel cage rotor having a polymer resin part containing powder of high magnetic permeability and method for fabricating it. The composite squirrel cage rotor includes a rotating shaft, an inner core, a polymer resin part that fills the cavity of the squirrel cage conductor and contains powder of high magnetic permeability. A squirrel cage conductor is positioned outer to portion of the polymer resin part, is formed of, material having high electric conductivity, and provided with a plurality of axial slots.

Abstract: Disclosed herein is a coreless AC Induction motor. The motor comprises a cup type coreless rotor. A rotating shaft is combined with the cup type coreless rotor. An induction rod is inserted into the cup type coreless rotor to guide a magnetic flux from the stator effectively. A stator is positioned around the coreless rotor. The cup type coreless rotor comprises a squirrel cage-shaped conduction cylinder and composite material or polymer resin. The squirrel cage-shaped conduction cylinder is made of material having high electric conductivity, such as aluminum or copper, and has plurality of slots along the axis of the squirrel cage-shaped conduction cylinder. The composite material or polymer resin fills the slots of the squirrel cage-shaped conduction cylinder to make up for the low stiffness of the squirrel cage-shaped conduction cylinder.

Abstract: A hybrid shaft adapted to be used as a drive shaft of an automobile transmission system comprises a unitary cylindrical hybrid stem formed from a metal tube and a composite material layer adhered to the metal tube. The metal tube provides torque-transmission strength to the hybrid shaft while the composite material layer increases a specific modulus of the hybrid shaft. The hybrid shaft is produced by stacking a composite material layer on a metal tube, putting a thermal shrinkage tube on the composite material layer, and co-curing the metal tube and the composite material layer while exerting a longitudinal compression force on the metal tube to prevent it from being thermally expanded.