| Gangneung-Wonju National University Industry Academy Cooperation Group Patent applications |
| Patent application number | Title | Published |
|---|
| 20110131010 | LAP TIME MEASUREMENT SYSTEM - Disclosed herein is a lap time measurement system. The lap time measurement system includes a management server and sensor nodes deployed at respective measurement points. Each of the sensor nodes includes a Global Positioning System (GPS) reception unit, a sensor unit for detecting whether a moving object has passed through a corresponding measurement point, a communication unit for transmitting and receiving data to and from the management server, and a control unit for updating an internal timer based on the time information, determining time data of the internal timer to be passage time data, and transmitting the determined passage time data. The management server receives the passage time data from the respective sensor nodes, calculates times at which the moving object has passed through the measurement points and lap times for respective measurement intervals based on the received passage time data, and provides the calculated times and calculated lap times. | 06-02-2011 |
| 20110069611 | WIRELESS SENSOR NETWORK - Provided is a wireless sensor network including: a plurality of sensor nodes connected linearly; a sink node connected to the uppermost node among the sensor nodes; a control server; a gateway connected between the sink node and the control server to transmit and receive data; and a plurality of relay gateways. In the case where the plurality of the sensor nodes are divided into a predetermined number of subgroups, the sensor nodes located at the highest levels in the divided subgroups and which are connected to the relay gateways are designated as relay nodes. In the case where an amount of data stored in the relay node exceeds a predetermined threshold value, the relay node transmits the stored data through the connected relay gateway to the control server. Accordingly, in the case where the data of the sensor nodes are increased, it is possible to minimize a problem in that the increased data are lost during transmission. | 03-24-2011 |
| 20110047538 | METHOD FOR UPDATING FIRMWARE OF SENSOR NODES ON A WIRELESS SENSOR NETWORK AND FIRMWARE UPDATER USING FOR THE SAME METHOD - Provided is a firmware updating method for a new node in a wireless sensor network including a plurality of nodes. The firmware updating method for the new node (a) a new node searching for neighbor nodes located within a predetermined distance; (b) the new node designating a parent node among the searched neighbor nodes; (c) in the case where the plurality of nodes include a join receiving state for joining the new node to the wireless sensor network, the designated parent node and the new node establishing a communication link by using the join receiving state; (d) the parent node transmitting firmware to the new node through the established communication link; and (e) the new node receiving the firmware from the parent node, updating existing firmware with the received firmware, and driving the updated firmware to be jointed to the wireless network. In the case where the new node is to be joined to the wireless sensor network, it is possible to directly update the firmware of the new node on the spot without recalling the node to a factory. | 02-24-2011 |
| 20110001612 | COMMUNICATION METHOD FOR A MOBILE SENSOR NODE IN A WIRELESS SENSOR NETWORK - A communication method for a mobile sensor node in a wireless sensor network includes: in a state that the mobile sensor node performs synchronization by a message reception interrupt from a parent sensor node and determines an uplink active duration and a downlink active duration, transmitting a message to the parent sensor node in the transmitting duration of the uplink active duration, receiving and processing messages from the parent sensor node and sensor nodes linearly connected around the parent sensor node in the receiving duration of the uplink active duration, and resetting a new parent sensor node using the received signal strength indications RSSIs of the received messages; and transmitting a message to the parent sensor node in the transmitting duration of the downlink active duration, checking whether or not a message is received from the parent sensor node in the receiving duration of the downlink active duration, if the message is not received from the parent sensor node, determining that time synchronization fails and resetting a new parent sensor node, and if the message is received from the parent sensor node, performing time synchronization according to a message reception interrupt from the parent sensor node. | 01-06-2011 |
