Abstract: A cooling system for a skin care device includes: a storage container storing a cooling fluid; a chamber in which the cooling fluid transferred from the storage container is filled; a discharge valve for discharging or blocking the cooling fluid filled in the chamber; a fluid level sensor for measuring a level of the cooling fluid filled in the chamber; and a pressurizer for increasing an internal pressure of the storage container so that an internal pressure of the storage container becomes greater than an internal pressure of the chamber, based on a value of a fluid level measured by the fluid level sensor being maintained constantly for a preset period.

Abstract: A substrate mapping sensor detects a state of a substrate located in a channel within a cassette and includes a light transmitting unit located on a side of the cassette and a light receiving unit located on another side of the cassette. The light transmitting unit includes a first light transmitting unit and a second light transmitting unit, which are a pair and located on a side of the channel, the light receiving unit includes a first light receiving unit and a second light receiving unit, which are a pair and located on another side of the channel, the first light transmitting unit and the first light receiving unit detect a presence or an absence of the substrate in the channel, and the second light transmitting unit and the second light receiving unit detect a sagging state of the substrate in the channel.

Abstract: Maps of a physical space provide information to an autonomous mobile device (AMD) about the location of objects. For example, a local map may represent objects currently detected while a global map represents objects that persist over time. Disagreements between the maps may result from quantization errors, sensor errors, changes in the physical space over time that are shown in one map but not another, and so forth. For example, the local map may indicate an obstacle in a space that the global map indicates is empty, or vice versa. A cluster representing an object in a map may be assessed to distinguish if the object is actual or false. Other techniques may be used to determine disagreements. Information about persistent disagreements may be stored for mitigation. The AMD may mitigate disagreements by exploring the physical space associated with the disagreement to add to map data.

Abstract: An autonomous mobile device (AMD) has one or more joints that move. A “choreo” comprises instructions that specify a particular set of motions. A constrained optimization algorithm determines a first time at which operation of the joint may be transitioned from a current state, such as while performing a first choreo, to a second choreo. The first time is determined to minimize motion discontinuities to less than constraint values. Constraint values may specify limits on time, position, acceleration, velocity and so forth. During the transition the joint is moved, subject to the constraints and using an optimization algorithm, toward the positions specified by the second choreo, subject to the constraint values. Synchronization of the second choreo to a specified time is maintained. The resulting movement avoids discontinuities producing a more naturalistic motion and may reduce wear and tear on the joint.

Abstract: An autonomous mobile device (AMD) may move around a physical space while performing tasks. The AMD may have sensors with a field of view (FOV) facing forward. As the AMD moves forward, a safe region is determined based on data from those forward-facing sensors. The safe region describes a geographical area that is clear of obstacles during recent travel. If the AMD moves outside of the FOV, such as moving backwards, a check is made as to whether the AMD remains within the safe region. If a portion of the AMD moves beyond the safe region, the AMD stops. This prevents the AMD from colliding with obstacles that are outside of the safe region and also outside of the FOV while moving.

Abstract: Disclosed herein is a burn-in system with a plurality of plugs on test boards, including: a main body (100) which has a test chamber (200) with an open front side; a plurality of test boards (40) on which a plurality of semiconductor chips (90) are mounted and which is mounted in the test chamber (200); a main board which tests the semiconductor chips by exchanging signals with the plurality of semiconductor chips; a door (540) which is provided on the main body (100) to open and close the test chamber (200); and a temperature control means provided inside the main body (100) to heat and cool the test boards (40) mounted inside the test chamber (200).

Abstract: Disclosed herein is an acoustic metamaterial structure which can effectively reduce noise in a specific frequency range through formation of an acoustic bandgap, wherein the specific frequency range is determined by a periodic structure formed by an array of multiple unit cells. The acoustic metamaterial structure includes multiple first unit cells each including a first space having a first cross-sectional area and a second space disposed downstream of the first space in a flow direction of fluid to communicate with the first space, the second space having a second cross-sectional area larger than the first cross-sectional area, wherein the acoustic metamaterial structure reduces noise in a specific frequency range through formation of an acoustic bandgap, the specific frequency range being determined by a periodic structure formed by an array of the first space and the second space.

Abstract: A fluid silencer includes: an expansion pipe disposed on a pipe through which a fluid containing noise sources flows and having an accommodation space therein; a viscous fluid received in the accommodation space; a noise introducing member disposed between the pipe and the expansion pipe to seal the accommodation space and allowing the noise sources to be introduced into the accommodation space therethrough; at least one partition member disposed in the accommodation space and dividing the accommodation space in a flow direction of the fluid; multiple baffle members disposed on one surface of the partition member and forming multiple sound absorbing spaces into which the noise sources introduced into the accommodation space are dispersedly introduced; and an elastic member disposed between the partition member and the baffle members and contracted/expanded by the viscous fluid entering/leaving the sound absorbing spaces as the noise sources are introduced into the sound absorbing spaces.

Abstract: Provided is a cooling guide structure of a motor, which may effectively cool a coil by being provided with a cooling guide including a guide part for spraying oil cooling the coil to various parts of the coil.

Abstract: A cover unit includes: a body to which an ultrasound generator adapted to generate ultrasound is coupled; first slits disposed at a lower portion of the body in the form of multiple rings having different radii and spaced apart from each other, the first slits having a first width; second slits depressed from an upper surface of the body to communicate with the first slits and having a second width smaller than the first width; third slits depressed from the upper surface of the body and each disposed between adjacent second slits, the third slits having a third width smaller than the first width; a bottom formed under the first slits; a first sidewall formed between adjacent first slits; and a second sidewall formed between the second slit and the third slit.

Abstract: The present disclosure relates to a system for cooling a stator core of an electric motor. The motor cooling system according to the present disclosure is advantageous in that the number of parts can be minimized, and cooling efficiency can be maximized with a cooling fluid evenly distributed to a heat-generating area, by improving a typical design (a core press-fit stop end) of a housing supporting the stator core to add a fluid guide and a nozzle shape or by applying a nozzle ring formed in a curved shape and capable of spraying the cooling fluid after being received and stored to an end of the housing.

Abstract: Disclosed herein is a sound insulation panel which is easy to manufacture and has a light weight. The sound insulation panel includes: a patterned plate comprising an edge plate and a separation plate extending into an inner region of the edge plate and dividing the inner region into a first elastic region and a second elastic region; and an elastic plate protruding from the patterned plate to be stepped with respect to the patterned plate and including a first elastic plate disposed in the first elastic region and a second elastic plate disposed in the second elastic region, the elastic plate blocking an air flow path and converting airborne sound waves into elastic waves, wherein the first elastic plate and the second elastic plate are displaced in opposite directions at a resonant frequency of the sound insulation panel.

Abstract: An autonomous mobile device (AMD) may move around a physical space to perform tasks. The AMD may explore the physical space to determine map data characterizing the physical space. An exploration system maintains a world snapshot that is representative of the AMD with respect to the physical space. A plurality of planning algorithm modules are available, each able to achieve a particular exploration goal or operate under particular conditions such as initial motion, loop closure, frontier exploration, and so forth. One or more planning algorithms are selected and provided with the world snapshot data. These planning algorithms provide responses and may also determine plan data. The resulting plan data is then selected for execution. The execution of the selected plan data operates the AMD to explore the physical space.

Abstract: Described herein is a method and system for generating a personalized exercise therapy program that is capable of customizing and providing an exercise program for therapy purposes to a patient. The method of generating a personalized exercise therapy program may include: executing an exercise program generation mode on a terminal logged in with a specific medical staff account; selecting, in the exercise program generation mode, at least one exercise item to be included in an exercise program; setting program information corresponding to the exercise program; generating the exercise program including the exercise item and the program information; storing the exercise program in association with the specific medical staff account; and allocating the exercise program to the patient account, based on receiving, from the specific medical staff account, prescription information for a patient account.

Abstract: Described herein is a method and system for generating a personalized exercise therapy program that is capable of customizing and providing an exercise program for therapy purposes to a patient. The method of generating a personalized exercise therapy program may include: executing an exercise program generation mode on a terminal logged in with a specific medical staff account; selecting, in the exercise program generation mode, at least one exercise item to be included in an exercise program; setting program information corresponding to the exercise program; generating the exercise program including the exercise item and the program information; storing the exercise program in association with the specific medical staff account; and allocating the exercise program to the patient account, based on receiving, from the specific medical staff account, prescription information for a patient account.

Abstract: A motor structure includes a cylinder-shaped motor housing having a hollow, a stator core accommodated inside the motor housing and including a plurality of stacked split cores each including a ring-shaped yoke portion and a plurality of teeth portions protruding from the yoke portion and having an arc-shape, a coil wound around the teeth portion, wherein the split cores include first split cores combined to form a first layer, second split cores combined to form a second layer stacked on the first layer, and a boundary between the first split cores and a boundary between the second split cores do not match.

Abstract: Disclosed is an ultrasonic wave transmission structure which is provided on a path of ultrasonic waves to amplify incident ultrasonic waves. The ultrasonic wave transmission structure includes: multiple rings each provided with a body portion having a different radius from other body portions and spaced apart from another body portion adjacent thereto and a slit disposed between adjacent body portions; and a membrane disposed in the multiple rings, wherein the mass of the membrane is adjusted to vary a resonant frequency in multiple sub-membrane regions.

Abstract: Described herein is a method of providing digitally-based musculoskeletal rehabilitation therapy provided in an application to achieve the above-mentioned objects, the method may include: selecting, based on prescription information including an exercise plan for a patient being allocated from a doctor terminal, an exercise plan to be provided to the patient; executing the application on a user terminal to which an account of the patient is logged in; providing an exercise list according to the exercise plan to the user terminal on which the application is executed; playing, on the user terminal, an exercise image corresponding to each of a plurality of exercise items according to the plurality of exercise items constituting the exercise list; providing, based on a degree of playback of the exercise image satisfying a preset standard, an evaluation page for performing an evaluation related to the exercise item; and updating the exercise plan based on evaluation information received through the evaluation page

Abstract: A holographic-based directional sound device is provided, the device including: a sound wave generating means generating a sound wave; and a flat plate configured to have the sound wave generating means installed at the center so as to radiate the sound wave to the outside through a surface, and to be composed of a plurality of unit cells, in which at least one groove is formed on a surface of the unit cell, and a radiation angle of the sound wave is determined according to a depth of the groove with respect to the unit cell, wherein the depth of the groove is determined by an individual surface admittance calculated by a cosine function or a sine function of the sum of a first value and a second value on the basis of a preset radiation angle of the sound wave and a preset frequency of the sound wave.

Abstract: An autonomous mobile device (AMD) moves around a physical space while performing tasks. The AMD may have sensors with fields of view (FOVs) that are forward-facing. As the AMD moves forward, a safe region is determined based on data from those forward-facing sensors. The safe region describes a geographical area clear of obstacles during recent travel. Before moving outside of the current FOV, the AMD determines whether a move outside of the current FOV keeps the AMD within the safe region. For example, if a path that is outside the current FOV would result in the AMD moving outside the safe region, the AMD modifies the path until poses associated with the path result in the AMD staying within the safe region. The resulting safe path may then be used by the AMD to safely move outside the current FOV.