Mathematical Problems in Engineering / 2013 / Article / Fig 3

Review Article

Recent Developments on Wireless Sensor Networks Technology for Bridge Health Monitoring

Figure 3

Prototypes of wireless sensor.
(a) Wireless sensor proposed by Lynch et al. in 2003 [29]
(b) The two-layer circuit board [34]
(c) The enclosed two-layer circuit board with batteries [34]
(d) Narada wireless sensing prototype [37]

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