Detection and protection of the attacks to the sheep and goats using an intelligent wireless sensor network

Wolves attacks to sheep and goats are very frequent at night. It has caused great economic losses in some countries. When an animal feels the presence of people or different animals, it experiences an increase of its cardiac frequency and corporal temperature. In this paper, we present a network of wireless nodes using IEEE 802.15.4 technology, which are capable of monitoring the vital signs of the sheep and goats. This smart system allows us to detect the collective stress caused by the attack of any predator during the night. It uses a learning system which decision is taken after having received 5 messages. When the system detects these anomalies in the animal´s behavior, it sends an alarm signal to alert the person in charge of the livestock facility and activates visual and acoustic alarms capable of frighten the predators and prowlers.