Network lifetime maximization and the target detection is the most important issue in wireless sensor network. The WSN motivated hundreds of applications in many domains, such as healthcare, emergency responses, traffic control, and military applications. The capability is to sense the environment and respond properly in automated manner. Many studies in the literature have addressed the problem of evaluating the performance of sensor network based on detection probability. It is difficult to detect the target in sensor networking since it is dependent on the topology of the sensor deployment and the location of the target. There has been a great interest to utilize WSN for military applications and especially in border protection. Focus on minimizing energy consumption and maximizing network lifetime for data relay in one-dimensional (1-D) queue network. The sensors on the devices extract physical information from the environment, such as temperature through a temperature sensor, pressure through a barometer, noise through a microphone, and even an image through a camera or thermal camera. Specifically, an Energy Saving via Opportunistic Routing (ENS_OR) algorithm is designed to ensure minimum power cost during data relay and protect the nodes with relatively low residual energy and DOA algorithm.