Paper Title
Hardware and Software Implementation of Sensor Node Failure Detection Based on Round Trip Delays and Paths in WSN

Abstract
In recent times there is a wide spread increase in the usage of Wireless Sensor Networks (WSNs), due to its vast advantages of being used in industry, agriculture, medical and military etc. The advancement in the microelectronic fabrication and sensor technology is rapid and hence made it possible to manufacture WSNs with many portable sensor nodes. These sensor nodes are incorporated increasingly in WSNs to improve the Quality Of Service (QOS) of the network at low cost to obtain better sensitivity and measurement accuracy of various parameters in the field. Use of large number of sensor nodes in WSNs would increase the probability of occurrence of faulty sensor nodes. Presence of failed and malfunctioned node may reduce the QOS of the networks which would affect the efficiency and reliability of WSNs. Hence to maintain better QOS of WSNs it is necessary to detect and remove such faulty sensor nodes. The manual checking of failed sensor node is difficult so paper describes the Hardware and Software implementation of Sensor node failure detection using Round Trip Paths (RTPs) and Round Trip Delays (RTDs ) in WSNs Keywords— Wireless Sensor Network, Round Trip Path, Round Trip Delay, faulty.