Recently, Unmanned Aerial Vehicles (UAVs) present a promising advanced technology that can enhance people life quality and smartness of cities dramatically and increase overall economic efficiency. UAVs have attained a significant interest in supporting many applications such as surveillance, agriculture, communication, transportation, pollution monitoring, disaster management, public safety, healthcare, and environmental preservation. Industry 4.0 applications are conceived of intelligent things that can automatically and collaboratively improve beyond 5G (B5G). Therefore, the Internet of Things (IoT) is required to ensure collaboration between the vast multitude of things efficiently anywhere in real-world applications that are monitored in real-time. However, many IoT devices consume a significant amount of energy when transmitting the collected data from surrounding environments. Due to a drone's capability to fly closer to IoT, UAV technology plays a vital role in greening IoT by transmitting collected data to achieve a sustainable, reliable, eco-friendly Industry 4.0. This survey presents an overview of the techniques and strategies proposed recently to achieve green IoT using UAVs infrastructure for a reliable and sustainable smart world. This survey is different from other attempts in terms of concept, focus, and discussion. Finally, various use cases, challenges, and opportunities regarding green IoT using UAVs are presented.

最近，无人飞行器（UAV）提出了一种有前途的先进技术，可以极大地提高人们的生活质量和城市的智慧，并提高整体经济效率。无人机在支持监视，农业，通信，运输，污染监测，灾害管理，公共安全，医疗保健和环境保护等许多应用方面已引起了极大的兴趣。工业4.0应用程序是由智能事物构想而成的，这些事物可以自动协作地超越5G（B5G）。因此，需要物联网（IoT），以确保在实时监控的现实应用程序中的任何地方高效地进行大量事物之间的协作。然而，从周围环境传输收集的数据时，许多物联网设备会消耗大量能量。由于无人机具有接近物联网的能力，因此无人机技术通过传输收集的数据以实现可持续，可靠，生态友好的工业4.0，在使物联网绿色化方面发挥着至关重要的作用。这项调查概述了最近提出的使用无人机基础设施实现绿色物联网的技术和策略，以实现可靠和可持续的智能世界。这项调查在概念，重点和讨论方面与其他尝试不同。最后，介绍了有关使用无人机的绿色物联网的各种用例，挑战和机遇。无人飞行器技术通过传输收集的数据以实现可持续，可靠，环保的工业4.0，在绿色物联网中扮演着至关重要的角色。这项调查概述了最近提出的使用无人机基础设施实现绿色物联网以实现可靠和可持续的智能世界的技术和策略。这项调查在概念，重点和讨论方面与其他尝试不同。最后，介绍了有关使用无人机的绿色物联网的各种用例，挑战和机遇。无人飞行器技术通过传输收集的数据以实现可持续，可靠，环保的工业4.0，在绿色物联网中扮演着至关重要的角色。这项调查概述了最近提出的使用无人机基础设施实现绿色物联网以实现可靠和可持续的智能世界的技术和策略。这项调查在概念，重点和讨论方面与其他尝试不同。最后，介绍了有关使用无人机的绿色物联网的各种用例，挑战和机遇。