FIT-Future Internet Technologies, ISEL-Instituto Superior de Engenharia de Lisboa, IPL-Instituto Politécnico de Lisboa, 1959-007 Lisboa, Portugal.
LASIGE, Faculdade de Ciências, Universidade de Lisboa, 1749-016 Lisboa, Portugal.
Sensors (Basel). 2021 Mar 18;21(6):2142. doi: 10.3390/s21062142.
The city of Lisbon, as any other capital of a European country, has a large number of issues regarding managing waste and recycling containers spread throughout the city. This document presents the results of a study promoted by the Lisbon City Council for trialing LPWAN (Low-Power Wide-Area Network) technology for the waste management vertical under the Lisbon Smart City initiative. Current waste management is done using GSM (Global System for Mobile communications) sensors, and the municipality aims to use LPWAN in order to improve range and reduce costs and provisioning times when changing the communications provider. After an initial study, LoRa (Long Range) and LoRAWAN (LoRa Wide Area Network) as its network counterpart, were selected as the LPWAN technology for trials considering several use cases, exploring multiple distances, types of recycling waste containers, placements (underground or surface) and kinds of commercially available waste level measurement LoRa sensors. The results showed that the underground waste containers proved to be, as expected, the most difficult to operate correctly, where the container itself imposed attenuation levels of 26 dB on the LoRa link budget. The successful results were used to promote the deployment of a city-wide LoRa network, available to all the departments inside the Lisbon City Council. Considering the network capacity, the municipality also decided to make the network freely available to citizens.
里斯本作为欧洲国家的首都之一,与其他城市一样,在城市各处管理废物和回收容器方面存在诸多问题。本文件介绍了里斯本市议会为里斯本智慧城市倡议中的废物管理垂直领域试用 LPWAN(低功耗广域网)技术而发起的一项研究的结果。目前的废物管理使用 GSM(全球移动通信系统)传感器,该市希望使用 LPWAN 来改善范围并降低成本,同时减少更换通信提供商时的配置时间。经过初步研究,考虑到多种用例,LoRa(远距离)及其网络对应物 LoRaWAN(LoRa 广域网)被选为试用的 LPWAN 技术,探索了多种距离、类型的回收废物容器、位置(地下或地面)以及各种市售的废物水平测量 LoRa 传感器。结果表明,正如预期的那样,地下废物容器的运行最为困难,容器本身对 LoRa 链路预算造成了 26dB 的衰减。成功的结果被用于推动全市范围的 LoRa 网络的部署,供里斯本市议会内的所有部门使用。考虑到网络容量,该市还决定免费向市民提供该网络。