For the characteristic and demand of the structural health monitoring for composite materials

a long-distance structural health monitoring system is proposed based on wireless sensor networks（WSNs）.The system is composed of three subsystems

which are sensor monitoring sub-system

WSNs sub-system and terminal control and monitoring sub-system.In order to enlarge the monitoring range

reduce the cost and consumption and improve the robustness

intelligence and survivability for the system

researches are made on self-developing sensor nodes

multi-hop routing

link-up micro circuit

terminal programs and node programs.Experiments validate that

compared to the traditional wire monitoring

the structural health monitoring based on WSNs has many advantages such as high flexibility

low load

low cost and convenience for building

remotion and maintenance.