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Target tracking is an important application in Wireless Sensor Networks or Internet of Things. In most applications, a large number of inexpensive and stationary sensor nodes are deployed randomly in a field to cooperatively monitor the intrusive targets that are able to move around the field. To save energy depletion, sensor nodes are in sleep mode in most of the time while they should be waked up...
This paper describes EcoBT, one of the first wireless-sensing platforms to support Bluetooth Low Energy (BLE) as their primary communication protocol. EcoBT Super-node is a full-sized node with an on-board digital accelerometer with rich expansion ports, while EcoBT Mini is the miniature version merely 8×8 mm 2 in area. Included on both nodes are a digital accelerometer with programmable...
As the R&D experience accumulates, there is a rising interest of wireless sensor network (WSN) deployment in the urban environment. For mission critical applications such as healthcare and workplace safety, in particular, it is essential that the data dissemination mechanisms satisfy two important quality of service (QoS) requirements: (1) high delivery rate and (2) low transmission delay. Proposed...
Scare energy limitations, and absence of computation bring serious challenges for sensor network. Given the mobile sensor network (MSN) with the ability of path planning is the key to maintain the sensor network system work autonomously. We had designed a mobile sensor node with compass to correct the direction of movement: six IR sensors let mobile nodes with the ability of obstacle avoidance. We...
Leveraging numerous integrated sensing devices placed close to the actual monitoring environments, the information that such networks can provide is more accurate and richer than the information provided with a system of few, expensive sensing devices. The general design of such sensor node is motionless, but the mobile sensor is useful in some aspects. Nodes can be distributed at any corner easily,...
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