Device for Calculating Probability Distribution of Building Sustainability Index Using Monte Carlo Simulation

This technology is a sustainability assessment device that derives the probability distribution of input quantities for building materials and energy sources, and calculates the probability distribution of environmental impact assessment values using Monte Carlo simulation to determine the probability distribution of the environmental impact index.

Life cycle assessment of buildings involves uncertainties in factors such as material input quantities, making it difficult to represent reliability with a single value and challenging to assess sustainability probabilistically.

By calculating the probability distribution of assessment values using input quantity probability distributions and Monte Carlo simulation, this technology can be applied to building sustainability assessments to provide a probabilistic index that reflects uncertainty.

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Key Features:

• A first storage unit that stores a set of baseline environmental impact assessment values and environmental impact coefficients for each building material and energy source.
• An input unit that receives information on building area, as well as quantities of multiple building materials and energy consumption.
• A probability distribution calculation unit that derives the probability distribution of building material input quantities and energy consumption based on settings corresponding to the area information.
• A first calculation unit that computes the probability distribution of environmental impact assessment values using Monte Carlo simulation and derives the probability distribution of the environmental impact index by dividing by the baseline value.

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Building Life Cycle Sustainability Assessment Device for Deriving Environmental, Cost, and Social Impact Indices

This technology is a sustainability assessment device that derives environmental, cost, and social impact indices by storing coefficients for building materials and energy sources, calculating life cycle assessment values, and dividing them by reference values.

Building sustainability requires consideration of not only environmental factors but also cost and social impacts; however, there has been a challenge in integrating these into a single index for quantitative assessment.

By calculating and integrating assessment values across these three areas as indices relative to reference values, this technology can be applied to building sustainability assessments to quantitatively evaluate environmental, cost, and social impacts simultaneously.

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Key Features:

• A first storage unit that stores reference environmental impact assessment values along with sets of environmental impact coefficients for materials and energy sources, and an input unit that receives input for input and consumption quantities.
• A first calculation unit and output unit that derive the environmental impact index by summing the environmental impact assessment values of materials and energy sources to obtain a life cycle value and dividing it by the reference value.
• A second calculation unit and output unit that derive the cost index by summing the cost assessment values of materials and energy sources to obtain a life cycle cost assessment value and dividing it by the reference value.
• A third calculation unit and output unit that derive the social impact index by calculating the life cycle social impact assessment value using social impact coefficients and dividing it by the reference value.

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Automated Life Cycle Assessment Device for Selecting Key Building Materials Based on Environmental Impact Factors

This technology is an automated life cycle assessment device that receives building material codes, stores environmental impact factors by material and energy source, calculates environmental scores for each material, and selects key building materials based on their contribution ratio.

Evaluating the life cycle environmental impact of a building requires calculating the impact of numerous materials, which has historically made it difficult to efficiently automate the selection of key materials for assessment.

By calculating environmental scores for each material and automatically selecting those with the highest contribution, this technology can be integrated into building life cycle assessment systems to automate and streamline the evaluation process.

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Key Features:

• An input unit that receives codes for multiple building materials, including their types and quantities.
• A database unit that stores primary environmental impact factors per unit of material input and secondary environmental impact factors per unit of energy consumption for each code.
• A calculation unit that computes the input volume for each material using its code and derives multiple environmental scores.
• A material selection unit that identifies key building materials by ranking them according to their contribution ratio to the total environmental score.

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This invention was developed with support from the Ministry of Science and ICT’s Center for Durability Innovation in Construction Structures.

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Concrete admixture providing water repellency using natural zeolite impregnated with water-based water repellent

This technology is an admixture that imparts water repellency to cement mortar or concrete by impregnating natural zeolite powder with a water-based water repellent through immersion and drying, and then incorporating it into the mixture.

To provide water repellency within concrete, the water-repellent agent must be stably contained; however, existing methods often suffer from the loss of active ingredients, making it difficult to ensure a lasting effect.

By impregnating and drying porous natural zeolite with active water-repellent ingredients, this technology allows the admixture to provide consistent and long-lasting water repellency from within the concrete.

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Key Features:

• An admixture used by incorporating it into mortar or concrete compositions to manifest water repellency from within the concrete.
• Porous natural zeolite powder impregnated with active ingredients from a water-based water repellent to impart water-repellent properties to concrete.
• Impregnated powder produced through a process of immersing natural zeolite powder in a water-based water repellent and drying it to evaporate the moisture.
• Water-based water repellent containing 40–60% by weight of active water-repellent ingredients, mixed with natural zeolite powder at a weight ratio of 1:0.9–1.1.

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This invention was developed with support from the Engineering Research Center for Durability Innovation of Construction Structures, funded by the Ministry of Science and ICT.

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Blood flow measurement device with adjustable microwave transmission and reception spacing for depth calibration

This technology is a blood flow measurement device that uses an antenna unit at one end of a bar-type probe body to emit and receive microwaves to target blood vessels in the human body, adjusting the depth of the measurement point by controlling the spacing between the transmitting and receiving antennas.

Existing non-contact blood flow measurement methods struggle to accurately target measurement locations due to variations in blood vessel depth among individuals, and it has been difficult to adjust the position while maintaining a simple device structure.

This technology uses an antenna spacing adjustment unit to control the distance between the transmitting and receiving antennas, allowing the measurement depth to be calibrated to the target blood vessel. This enables accurate blood flow measurement with a simple structure, making it ideal for wearable and portable blood flow monitoring devices.

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Key Features:

• A probe comprising a bar-type probe body extending longitudinally and an antenna unit formed at one end of the probe body
• A transmitting antenna included in the antenna unit that emits microwaves toward a target blood vessel in the human body
• A receiving antenna that receives the microwaves transmitted from the transmitting antenna and reflected by the target blood vessel
• An antenna spacing adjustment unit that adjusts the distance between the transmitting and receiving antennas to calibrate the blood flow measurement depth to the target blood vessel

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This invention was developed with support from the Ministry of SMEs and Startups for the development of a microwave sensing module and monitoring system for measuring cerebral artery blood flow imbalance.

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Device for predicting fine dust emissions at construction sites by calculating the weighted sum of direct and fugitive emission factors

This technology is a predictive device that calculates and stores fine dust emission factors for each type of construction equipment, generates activity scenarios based on design information, and calculates the total fine dust emissions at construction sites.

Fine dust at construction sites varies significantly depending on the type of equipment and its activity, making it difficult to accurately predict emissions by accounting for both direct and fugitive sources.

By calculating and aggregating emissions for each piece of equipment using emission factors that combine direct and fugitive emission factors, this technology can be applied to construction site environmental management to predict total fine dust emissions.

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Key Features:

• A fine dust emission factor calculation unit that generates fine dust emission factors defined according to construction equipment and their respective construction activities.
• A database that stores fine dust emission factors and a design information input unit that receives design information, including basic project data and construction specifications.
• A scenario generation unit that creates activity scenarios for construction equipment based on the design information.
• An emission calculation unit that calculates and aggregates emissions for each piece of equipment based on activity scenarios and emission factors to determine the total fine dust emissions at the site.

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This invention was developed with support from the Ministry of Land, Infrastructure and Transport for the development of an IoT-based integrated platform for predicting and managing fine dust at construction sites.

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Upper Limb Assistive Robot

This technology is an upper limb assistive mechanism that secures only the user's forearm without requiring the alignment of the human upper limb and robot joint axes. It achieves gravity compensation and 6 degrees of freedom through two series elastic actuator (SEA)-based rotation axes.

Previous challenges included slippage, discomfort, increased design complexity, and the physical difficulty of aligning joint axes due to individual differences and the mismatch between human upper limb joint degrees of freedom and robot joints.

This technology features a mechanism that secures only the user's forearm and positions the robot's joint axes externally. By using wire-pulley-based rotary series elastic actuators, it measures torque from external forces and performs gravity compensation. Applicable to rehabilitation training, gait assistance, and medical/welfare services, it resolves physical compatibility issues to enhance the user experience, providing a comfortable and safe interaction.

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Key Features:

• A second arm that is rotatably coupled to the first arm about a horizontal third robot rotation axis and includes a movement point.
• A connection frame rotatably coupled to the second arm about a horizontal fourth robot rotation axis passing through the movement point.
• A fastening unit rotatably coupled to the connection frame about a fifth robot rotation axis orthogonal to the fourth robot rotation axis.
• A rotating frame rotatably coupled to the first support frame about a vertical first robot rotation axis.

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This invention was developed with support from the Ministry of Science and ICT for the commercialization of immersive human-robot multi-sensory interaction technology.

Autonomous Multi-Purpose Construction Robot System with Position-Maintaining Capability

This technology is an autonomous multi-purpose work system where a transport robot and a work robot are connected by a coupling link to move in a towing configuration, and a gripper module extracts floor finishing materials from a storage unit to install them sequentially onto the floor leveling material.

Existing construction robots are limited to specific tasks, resulting in low versatility. Furthermore, the lack of integration between material transport and installation processes reduces work efficiency, and insufficient sensors for environmental awareness limit their practical effectiveness.

This technology features a towing structure via coupling links between mobile platforms, a gripper module composed of vertical/horizontal supports and a sliding arm, a multi-sensor module for environmental and installation status recognition, and a contact mechanism combined with a light-source marker-based positioning algorithm for precise floor material alignment. Applicable to logistics, service robots, and autonomous platforms, it enhances the speed and efficiency of building finishing work through the adoption of construction automation and robotics.

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Key Features:

• An autonomous transport robot on a first mobile platform equipped with a storage unit that holds multiple floor finishing materials separated by equidistant guide pieces.
• A second mobile platform connected to the first mobile platform via a coupling link, towing the transport robot from the front.
• A gripper module installed on the second mobile platform that extracts and installs floor finishing materials one by one.
• An autonomous work robot that extracts finishing materials by inserting the arm of the gripper module underneath the material and retracting it.

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This invention was developed with support from the Ministry of Science and ICT for the development of intelligent painting and masking collaborative robots.

Control System for Flexible Joint Robots

This technology is a robust control system that resolves robot singularity issues by converting Cartesian coordinates into rotational coordinates and estimates internal and external disturbances using a disturbance observer based on the dynamic model of flexible joints, reflecting them in the control input.

Conventional linear system-based disturbance observers suffer from performance fluctuations depending on robot movement, necessitating conservative design, and their operational range is limited due to control divergence when singularities occur within the workspace.

This technology utilizes a Jacobian transpose matrix to transform coordinate systems and designs a nonlinear disturbance observer that includes a determinant to eliminate inter-joint reaction forces, thereby achieving consistent control performance and singularity avoidance regardless of changes in robot posture. It can be applied to rehabilitation training, gait assistance, and medical/welfare services, maximizing the workspace and improving robot performance and efficiency by achieving high performance and stability across various fields.

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Key Features:

• A full flexible joint robot dynamics unit that receives control inputs and disturbances, and outputs a control output by multiplying the control input, which reflects the disturbances, by at least one determinant.
• A control input dimension conversion unit that receives the robot's control input and converts the Cartesian coordinate system of the control input into a rotational coordinate system.
• c2 is the distance between the end of the second link and its center of gravity, and is the angle of the second link in the Cartesian coordinate system.
• A disturbance observer that calculates estimated disturbances by estimating disturbances and reflects the estimated disturbances in the control input.

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This invention was developed with the support of the Ministry of Trade, Industry and Energy's technology development project for interoperable modular muscle-assist exosuits.

In-vehicle warning device that detects drowsy driving risk based on the blood flow velocity ratio between two sites

This technology is an in-vehicle hazard warning system consisting of a terminal unit that senses blood flow velocity via patches attached to the common carotid artery and the vertebral artery to calculate a risk index for determining the driver's sleep state, and a warning unit that generates alerts when a risk is detected.

Existing drowsy driving warning methods rely on external signals such as facial expressions or blinking, which often lead to malfunctions and make it difficult to provide tiered warnings based on physiological signals like cerebral blood flow changes.

By calculating a risk index based on the ratio of the two blood flow velocities and generating tiered warning signals according to the range of the risk index, this technology can be applied to in-vehicle driver monitoring systems to provide proactive, staged warnings for drowsy driving risks.

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Key Features:

• A patch unit consisting of a first patch attached to the user's common carotid artery to sense blood flow velocity and a second patch attached to the vertebral artery to sense blood flow velocity.
• A terminal unit that calculates a risk index using the first and second blood flow velocities and generates a warning signal if the index falls within a preset risk range.
• A warning unit that generates a warning control command to alert the user upon receiving a warning signal from the terminal unit.
• A risk index calculation module that determines the risk index based on the ratio of the first blood flow velocity to the second (or vice versa), and a warning signal generation module that produces tiered alerts for each risk range.

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Method for Determining the Injection Rate of Concrete Lubricating Layer Activators Using an Indoor-to-Field Correlation Model

This technology determines the optimal injection rate of lubricating layer activators by creating a viscosity change model through laboratory mortar viscosity tests and establishing an indoor-to-field correlation model based on actual field pressure measurements.

Relying on experience to determine the injection rate for activating the lubricating layer during concrete pumping often leads to inconsistent pumping efficiency and difficulties in applying laboratory experimental values to field conditions.

By calculating the injection rate required to meet target pressure changes using a viscosity change model and an indoor-to-field correlation model, this technology enables the quantitative determination of lubricating layer activator injection rates in concrete pumping processes.

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Key Features:

• Preparing mortar samples for laboratory testing and measuring viscosity at varying activator concentrations to acquire experimental data.
• Generating a viscosity change model by patterning the mortar's viscosity variations based on the activator concentration from the laboratory data.
• Acquiring field measurement data on pressure changes within the pipeline according to the activator injection rate through actual concrete pumping field tests.
• Plotting points where viscosity changes and pressure changes align on a coordinate plane to form an indoor-to-field correlation model and determine the final injection rate.

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This invention was developed with support from the Ministry of Land, Infrastructure and Transport for the development of prediction techniques to improve the pumping efficiency of lubricating layer activation systems.

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Salt-Resistant Marine Concrete Composition Containing Salt Adsorbents and Lithium Carbonate

This technology is a salt-resistant marine concrete composition that combines Portland cement, blast furnace slag, fly ash, and fine/coarse aggregates with an admixture containing a plasticizer, salt adsorbent, lithium carbonate, and corrosion inhibitor.

Concrete in marine environments is prone to steel reinforcement corrosion due to penetrating chloride ions, making it difficult to maintain long-term strength and water tightness while resisting salt damage.

This technology enhances the salt resistance and long-term durability of marine concrete structures by using a salt adsorbent to substitute and bind chloride ions, while lithium carbonate and corrosion inhibitors suppress corrosion.

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Key Features:

• Portland cement that hardens when mixed with water and contains calcium oxide, silicon dioxide, and aluminum oxide to provide strength.
• Blast furnace slag, which forms Friedel's salt to fix chloride ions upon hardening, and fly ash, which increases strength through pozzolanic reactions.
• An admixture that disperses particles in the mixture of Portland cement, blast furnace slag, and fly ash to provide fluidity.
• The admixture consists of a plasticizer, a salt adsorbent that substitutes chloride ions, lithium carbonate to enhance salt resistance, and a corrosion inhibitor.

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This invention was developed with support from the Ministry of Education for the development of concrete mixed with admixtures to improve the salt-damage durability of reinforced concrete buildings in coastal areas.

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Concrete Washwater Recycling System Using Supersaturated Carbon Dioxide Reaction Solution for Neutralization

This technology is a concrete washwater recycling system consisting of a carbon dioxide supply unit, a micro-bubble generator that mixes CO2 with process water to create a supersaturated reaction solution, and a recycling treatment tank that collects and neutralizes washwater separated from surplus concrete.

Ready-mixed concrete washwater is highly alkaline, making it difficult to reuse directly, and there have been challenges in stably neutralizing it using carbon dioxide to convert it into a usable resource.

By using a micro-bubble generator to create a supersaturated carbon dioxide reaction solution that reacts with and neutralizes calcium hydroxide in the washwater, this technology allows the washwater to be recycled as mixing water for concrete production.

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Key Features:

• Carbon dioxide supply unit equipped with a flow control device for supplying carbon dioxide in a gaseous state
• Micro-bubble generator that mixes carbon dioxide with process water to dissolve it into a supersaturated carbon dioxide reaction solution and supplies it to the recycling treatment tank
• Washwater recycling treatment tank where washwater separated from surplus concrete is collected and neutralized by the supplied supersaturated reaction solution
• Agitation pumping unit that mixes and pressure-pumps carbon dioxide and process water, along with an expansion unit, a turbulent collision unit, and a micro-bubble generation unit

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This invention was developed with support from the Ministry of Education for the development of mineral carbonation techniques for construction waste using carbon dioxide micro-bubbles.

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Heat-storage pavement for black ice reduction using embedded phase-change material storage media

This technology is a pavement system designed with heat-storage capabilities by placing metal storage media filled with phase-change materials between the first and second pavement layers above the sub-base.

In winter, black ice often forms on road surfaces, posing significant accident risks, and existing pavement structures have struggled to store sufficient heat to effectively prevent surface freezing.

By utilizing alkane phase-change materials within the storage media that absorb and release heat through state changes based on temperature, this technology can be applied to road surfaces to reduce the formation of black ice on the second pavement layer.

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Key Features:

• A first pavement layer laid over the sub-base and a second pavement layer laid on top to form the road surface
• Metal storage media placed at regular intervals on the first pavement layer, featuring internal containment spaces
• Storage pipes consisting of a carbon nanotube-reinforced hard steel body, including closed ends, openings, and sealing components
• Phase-change materials filled within the storage media's containment spaces, composed of a mixture of tetradecane, tridecane, and pentadecane, which change state according to temperature

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HMD device for managing blood flow velocity using flickering black-and-white spot visual stimuli

This technology is a blood flow velocity management device consisting of a terminal unit that senses blood flow velocity at the common carotid artery and radial artery using attached patches and calculates the difference between the two, and an HMD unit that provides flickering black-and-white spot visual stimuli to minimize this difference.

Existing blood flow management methods have limitations in that they cannot directly improve imbalances between body parts through visual means, and they fail to optimize the brightness or flickering frequency of stimuli according to an individual's condition.

By varying the brightness and flickering frequency of black-and-white spots to find the optimal conditions that minimize the difference between the two peak blood flow velocities, this technology can be applied to wearable healthcare devices to improve blood flow imbalances through visual stimulation alone.

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Key Features:

• A patch unit consisting of a first patch attached to the user's common carotid artery to sense blood flow velocity and a second patch attached to the radial artery to sense blood flow velocity.
• A terminal unit that quantitatively calculates the difference between the first and second blood flow velocities received from the patch unit in real time.
• An HMD unit that provides visual stimuli corresponding to black-and-white spots flickering at a predetermined frequency to minimize the difference between the two blood flow velocities based on the calculated quantitative data.
• An HMD control unit that operates the HMD unit by varying the brightness and flickering frequency of the black-and-white spots to determine the optimal conditions that minimize the difference between the two peak blood flow velocities.

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