Network packet

Quantum mechanics

Wireless sensor network

Key distribution in wireless sensor networks

Data transmission

Engineering

Network topology

Biology

Fish <Actinopterygii>

Fishery

Real-time computing

Telecommunications

Power (physics)

Computer science

Computer network

Wireless WAN

Physics

Mathematics

Environmental science

Mathematical analysis

Reliability (semiconductor)

Aquaculture

Tree (set theory)

Transmission (telecommunications)

Wireless

Mobile wireless sensor network

Wireless network

Biosystems Engineering

Cabled intelligent systems bring with them the complexities of structures, the complications of data measurements and transmission, and a limited scale of application. A wireless sensor network is used to eliminate these disadvantages, however reliability of data transmission and energy saving in a wireless sensor network are two challenges that still need to be addressed. The design information on three types of nodes in a wireless sensor network is described in detail. Tree topology for WSN is adopted to decrease the packet loss rate and improve reliability of data transmission. Allowing sensor nodes to sleep and reorganising the data frames are the two approaches used to achieve energy-saving. The experimental results demonstrate the usefulness of these approaches in solving the challenges.

A wireless sensor network-based monitoring system for freshwater fishpond aquaculture