Abstract: In a wireless sensor actuator network system, actuators to be actuated to correspond to a plurality of sensors are selected using an A-S matrix that represents relationship strength between a plurality of actuators and the plurality of sensors based on sensing data of the plurality of sensors, and only the selected actuators determine actuation values based on values of the A-S matrix.

Abstract: A collar for a wild animal and an apparatus for monitoring/managing the activity of a wild animal are disclosed. The present invention discloses a collar for a wild animal that is capable of collecting the location, habitat, activity environment and activity state information of a wild animal and transmitting the collected information to a remote server. The present invention discloses an apparatus for monitoring/managing the activity of a wild animal that is capable of remotely receiving the location, habitat, activity environment and activity state information of a wild animal measured by a collar for a wild animal, and analyzing and managing the habitat environment and activity state of the wild animal. The collar for a wild animal is capable of being continuously operated for a long period performing operation using energy that can be acquired from an area around a wild animal and at low power.

Abstract: An aspect of the present invention provides a method for sensing a quality of a mobility link by a system for sensing a quality of a mobility link configured for evaluating a quality of a transmission-attempting link connected with a transmission-attempting node: computing link quality metric values of RSSI, LQI and EXT from transmission packets included in the message; computing a distribution ratio of a fuzzy set corresponding to each of the link quality metric values by applying the computed quality metric values to a quality fuzzy set having their respective quality factor indicators configured therein; computing fuzzy estimator values by classifying and aggregating the computed fuzzy distribution ratio of the quality fuzzy set into a first, a second and a third quality; and evaluating a quality of the transmission-attempting link based on the fuzzy estimator values.

Abstract: An omnidirectional antenna is provided. The omnidirectional antenna includes a spiral antenna including a substrate, at least one upper antenna pattern formed on the substrate, and at least one lower antenna pattern formed under the substrate and connected to the upper antenna pattern; and a monopole antenna that supports the spiral antenna and that is connected to the spiral antenna. Therefore, by forming an omnidirectional antenna in a spiral antenna having an upper antenna pattern and a lower antenna pattern at an upper surface and a lower surface, respectively, of a substrate, three-dimensional current flow is available and thus omnidirectional radiation characteristics may be exhibited.

Abstract: A virtual sensor generation apparatus of a sensor network sets a communication connection to a sensor node at a periphery of a smart device, generates a logical sensor corresponding to a physical sensor that is connected to the sensor node, generates a virtual sensor with the logical sensor, and provides an application service to a user using the virtual sensor.

Abstract: An apparatus and method for processing a path management packet is provided, the method including determining whether a router for processing a received path management packet is a storing node, and when the router is determined to be a storing node, controlling the path management packet to be stored in a routing table, or when the router is determined to be a non-storing node, failing to store the path management packet in the routing table and controlling the path management packet to be transmitted to a subsequent node.

Abstract: An apparatus and method for controlling a sensor node are provided that may calculate an azimuth angle and a slope of the sensor node using a 2-axis magnetic sensor and a 3-axis acceleration sensor, and may detect a target approaching the sensor node. The apparatus may include a calculation unit to calculate an azimuth angle and a slope of a sensor node, based on a magnetic values measured by a 2-axis magnetic sensor and a acceleration values measured by a 3-axis acceleration sensor; a sensor control unit to filter the magnetic values and the vibration values and to amplify the filtered magnetic values and the filtered vibration values, when the azimuth angle and the slope are calculated; and a detection unit to detect a target based on the amplified magnetic values and the amplified vibration values.

Abstract: Provided is a device and a method for smart device and sensor node integrated application update, including an application program updating device including a generator to generate a package in a storage space by installing a sensing application, an extractor to extract an installation file and a profile of an application program interworking with the sensing application from the package, a recognizer to recognize a sensor node by referring to the profile, an installer to install the application program by transmitting the installation file to the sensor node, and an executor to execute the application program and the sensing application when the application program is installed in the sensor node.

Abstract: An apparatus and method for determining the location of a mobile object are disclosed. The apparatus includes a GPS module unit, a mobile communication module unit, a USN module unit, and a control module unit. The GPS module unit receives a GPS signal including the coordinate information of the current location of a mobile object. The mobile communication module unit is operated when the GPS module unit has received the GPS signal, and transmits the coordinate information of the current location of the mobile object and the ID of the mobile object to a location estimation apparatus. The USN module unit is operated when the GPS module unit fails to receive the GPS signal, and broadcasts a beacon signal carrying the ID of the mobile object. The control module unit operates any one of the mobile communication module unit and the USN module unit.

Abstract: In a direction control antenna, a plurality of impedance elements are connected between a ground body and a radiator, a plurality of switches are connected between each impedance element and the ground body, and on/off of a plurality of switches is controlled according to a control instruction from the outside. In this case, by the turned-on switch, a radiation direction and a radiation form are determined according to short circuit positions of the radiator that is short-circuited to the ground body and the number of short circuit positions.

Abstract: A sensor signal processing apparatus receives a sensor signal from a sensor in order to detect an object, determines whether an object exists from the received sensor signal, and if an object exists, the sensor signal processing apparatus generates an alarm signal, and it removes an alarm signal corresponding to a false alarm signal from the alarm signal based on at least one of a length and energy of the alarm signal.

Abstract: In a wireless sensor actuator network system, actuators to be actuated to correspond to a plurality of sensors are selected using an A-S matrix that represents relationship strength between a plurality of actuators and the plurality of sensors based on sensing data of the plurality of sensors, and only the selected actuators determine actuation values based on values of the A-S matrix.

Abstract: In order to predict power consumption, previous measurements, which indicate the actual amount of power consumed in the past, and errors between previous estimates and the previous measurements, are used as first input data, and power consumption estimates for each prediction technique are simultaneously calculated by using the first input data in at least two prediction techniques. Next, the power consumption estimates calculated by each prediction technique and errors between the power consumption estimates and an actual measurement are used as second input data, and the final power consumption is predicted by making an additional power consumption prediction based on the second input data.

Abstract: Provided is a device and a method for smart device and sensor node integrated application update, including an application program updating device including a generator to generate a package in a storage space by installing a sensing application, an extractor to extract an installation file and a profile of an application program interworking with the sensing application from the package, a recognizer to recognize a sensor node by referring to the profile, an installer to install the application program by transmitting the installation file to the sensor node, and an executor to execute the application program and the sensing application when the application program is installed in the sensor node.

Abstract: A sensor terminal capable of personalizing an external physical device. The sensor terminal includes a control unit that recognizes and uses the external physical device as an internal device. The control unit may include a device object driver to manage a device object of one or more physical device and a profile of the device object; and a device service module to generate the device object of the physical device, and register the generated device object and the profile of the device object in the device object driver. Thus, the sensor terminal may recognize and use the external physical device as if it were the internal device.

Abstract: Provided are a wake-up apparatus and wake-up method for a low power sensor node, and more particularly, to a wake-up apparatus and wake-up method for a low power sensor node, which can extend the battery life of the sensor node and minimize the amount of power consumed by an entire sensor network power by minimizing unnecessary power consumption of the sensor node. The wake-up apparatus for a low power sensor node includes: a wake-up signal detector receiving and detecting a wake-up signal of a sensor node; a wake-up radio frequency (RF) circuit unit filtering and amplifying the wake-up signal; and a wake-up baseband transducer detecting a wake-up address from the wake-up signal and comparing and verifying the wake-up address with a wake-up address that is provided from a server managing the sensor node.

Abstract: A method of comprehensively monitoring slopes based on a wireless network in a sensor node is provided. The method includes acquiring sensing data of first sensing frequencies for determining a risk to the slopes, transmitting the acquired sensing data of first sensing frequencies to an analysis server through a gateway, acquiring sensing data of second sensing frequencies for determining the risk to the slopes when operation mode received from the analysis server through the gateway is precision mode, and transmitting the acquired sensing data of second sensing frequencies to the analysis server through the gateway.

Abstract: Provided is an apparatus and method for tracking a position of a fixed node. The position tracking apparatus of the fixed node may include: an interface to extract, from a database in response to the occurrence of an event about tracking the position of the fixed node, packet data corresponding to a mobile node associated with the event; and a processor to analyze a received signal strength of the packet data and a position of the mobile node from the packet data, and to track the position of the fixed node using the analysis result.

Abstract: Provided are an apparatus and method of transmitting and receiving a wake-up signal. The method of receiving a wake-up signal includes the following: operating a radio frequency (RF) receiving unit that receives a wireless signal through an antenna during an SFD detecting time, wherein the SFD detecting time is shorter than a predetermined SFD detecting time period, according to the predetermined SFD detecting time period and detecting a start of frame delimiter (SFD) to indicate that the received wireless signal is a wake-up signal to wake-up a node in a sleep mode; and detecting the wake-up signal by continuously operating the RF receiving unit when the SFD is detected. Power consumption that is used to receive the wake-up signal can be reduced.

Abstract: An apparatus and method for processing a path management packet is provided, the method including determining whether a router for processing a received path management packet is a storing node, and when the router is determined to be a storing node, controlling the path management packet to be stored in a routing table, or when the router is determined to be a non-storing node, failing to store the path management packet in the routing table and controlling the path management packet to be transmitted to a subsequent node.