Implementation of IoT Networks Based on MQTT for Wildlife Monitoring System

With the widespread use of the Internet of Things (IoT), use cases in IoT have been considered for solving social problems in various fields such as agriculture, welfare, disaster prevention, and transportation infrastructure. Additionally, crop damage caused by animals is a common occurrence all over the world. An example of such damage is the damage to agricultural crops and threat to elderly people owing to animals in Hakusan city, Ishikawa prefecture, where the Hakusan campus of the authors' university is located. Presently, measures against damage caused by animals are being implemented by installing animal traps and cages; however, it is necessary to patrol the conditions of capture, thereby increasing human effort. To solve this problem, the authors considered a wildlife monitoring system to remotely manage a cage by using a sensor or camera with Internet connectivity. Assuming that a large number of IoT devices would be used in such a system, the authors visualize a high network load problem. Therefore, the authors aim to reduce the load on the IoT network. In this paper, the part of the wildlife-monitoring system that is concerned the evaluation and consideration of network using MQTT is described.