摘要:
A method of producing a retro-reflective heat transfer film includes heat-joining a PET release film and a transparent TPU sheet; forming a sticky-adhesive layer or a hot melt adhesive layer on the surface of the transparent TPU sheet; fixing glass beads made of beads with a refractive index of 2.2 to the semi-finished sheet; coating a thin film of transparent resin on the surface of the glass beads, and then forming an aluminum vacuum-coating layer on the coated thin film and forming a reflective resin layer transparent, colored or with graphics on the surface of the aluminum vacuum-coating layer and then producing a transfer sheet by forming a transparent hot melt resin layer on the surface of the reflective resin layer of the semi-finished sheet subject.
摘要:
Provided are a remote control method of a sensor node for low-power and a sensor network therefor. The remote control method, including: generating an interrupt signal when a node receives a remote control signal from a corresponding micro radio frequency (RF) processor installed in a gateway; regenerating the interrupt signal when the node is not converted from a sleep mode to a wake-up mode; collecting sensing data by communicating with other nodes when the node is converted from the sleep mode to the wake-up mode; and converting from the wake-up mode into the sleep mode when the communication is completed.
摘要:
Provided is a method of delivering data in a wireless personal area network. One of nodes forming the wireless personal area network broadcasts data including the address and the sequence number of one node to a plurality of other nodes, and broadcasts one of the data and other data to the other nodes depending on whether the data is received from the other nodes within a predetermined time. Accordingly, all the nodes on the network can receive data reliably and simultaneously power consumption is reduced, and thus the life of the network is extended.
摘要:
An apparatus for and a method of transmitting sensing data of a sensor node for proactive data filtering in a wireless sensor network are provided. In the apparatus and method, a request query of sensing data and timer parameters are received, local sensing data sensed in the sensor node in response to the received request query are detected, a driving time of a timer applying the timer parameters based on the request query is set, and the local sensing data are transmitted when the local sensing data do not overlap sensing data of a neighboring sensor node within a wireless reception range of the sensor node by overhearing the sensing data of the neighboring sensor node during the set driving time of the timer. Thus, since a data transferring path is selected considering the remaining energy of the node, the energy exhaustion of the node is distributed, thereby improve the lifespan of the network.
摘要:
Provided are an apparatus and method for collecting shopping information using a magnetic sensor. The shopping information collecting apparatus, includes: a magnetic value sensing and analyzing means for sensing and analyzing a magnetic value within own zone in real-time; a central processing means for processing shopping information based on the magnetic value analyzed by the magnetic value sensing and analyzing means; and a shopping information transmitting means for transmitting shopping information processed by the central processing means.