This article presents a new self-powered wireless failure detection method that uses different signal transmission rates from piezoelectric energy harvesters. Reliable sensor network has been challenging due to the power supply issue, often covered by batteries need regular replacement. Piezoelectric harvesting is an excellent option sensors in vibrational environment, but level limited input e...

Wireless Multimedia Sensor Networks (WMSNs) are networks of wirelessly interconnected sensor nodes equipped with multimedia devices, such as cameras and microphones. Thus a WMSN will have the capability to transmit data, video audio streams, still images, scalar data from environment. Most applications WMSNs require delivery information certain level Quality Service (QoS). This is challenging t...