Abstract:
A method for controlling transmission of sensor data by a coordinator of a wireless sensor network, the method including transmitting a data frame received from a sensor device to a PAN coordinator; in response to no acknowledgement message being received from the PAN coordinator during a predetermined period of time for waiting to receive an acknowledgement message, retransmitting the data frame; and, in response to a number of retransmission attempts of the data frame being exceeding a maximum number of retransmission attempts, transmitting Data Transmission Stop Notification to the sensor device in order to stop to receive any data frame from the sensor device.
Abstract:
Provided are a system and method for providing customized decision support information required for decision-making for each disaster type and each situation management work process stage based on a situation management work process. According to the present invention, a decision support system for disaster situation management includes a situation management service system for each disaster type that provides a situation management service for a specific disaster type, a big data management system configured to collect, store, and manage situation management big data used for disaster situation management, a decision support platform configured to manage a situation management work process for each disaster, and provide decision support information necessary for each disaster type and each situation management work process stage, and a situation information sharing and collaboration system configured to visualize and provide situation management decision support information on a situation board in a specific situation room.
Abstract:
An apparatus and method for detecting smoke using multi-angle light scattering. The apparatus includes a light source array in which a plurality of light sources outputting optical signals of a same wavelength are arranged at a regular interval and configured to output the optical signals at different irradiation angles to smoke particles, a lens configured to divert optical paths of the optical signals output from each of the plurality of light sources included in the light source array, an optical detector configured to measure the optical signals that pass through the lens and are scattered and absorbed by the smoke particles, and a computing device configured to classify types of the smoke particles using a scattering coefficient and an absorption coefficient of the smoke particles determined through the measured optical signals.
Abstract:
A surface plasmon resonance imaging apparatus is provided. The surface plasmon resonance imaging apparatus includes a light irradiation unit configured to irradiate polarized light onto a metal coating film provided on one surface of a prism, a light modulator configured to spatially pattern-encode light reflected by the metal coating film and the prism, a light detector configured to detect a pattern-encoded light signal, obtained through pattern-encoding by the light modulator, as a spectral signal, a signal processor configured to spatially decode the spectral signal and analyze a decoded spectral signal to generate characteristic data of a sample provided on the metal coating film, and an output unit configured to output the characteristic data of the sample as a two-dimensional (2D) image.