IoT and Edge For wateR Management
The InTERiM project is the crossing of two projects, one in Switzerland, the other in Tunisia:
- The Swiss joint project which aims at combining edge and Cloud technology to deploy and execute self-adapting Machine Learning based IoT applications on large scale area.
- The Tunisian “PNRI” (Programme National de Recherche et d’Innovation) project (April 2019 – March 2021): between IPNET, SupCom, INAT and the telecom provider Ooredoo, accepted in March 2019, budget : 250 k DNT = 85 kCHF. This project aims at deploying an IoT smart agriculture application used to predict irrigation water requirements. The aim is to offer irrigation programs according to the needs and available water volumes.
InTERiM aims at:
- using the expertise of the Swiss partners (HES-SO, SixSq) in the domain of edge and cloud to deploy the IoT smart agriculture application on a hybrid edge/cloud platform based on the SixSq NuvlaBox appliance (https://sixsq.com/products-and-services/nuvlabox/overview)
- using the IoT smart agriculture application as concrete use-case to extend and enlarge the markets targeted by the Swiss joint project.
- Create a partnership between the two non-academic partners: SixSq and IPNET to target the Tunisian market in particular, and that of Africa in general.
The Swiss joint project
Pushed by the fast evolution of smart cities and industry 4.0, the need to make the edge smarter is inescapable. Current IoT platforms tend to centralize intelligence in the cloud. This model is doomed to fail. A new model, combining edge and cloud, is required. The aim of this project is to implement a platform for creating intelligent IoT applications and deploying them on a shareable backbone infrastructure composed of three layers: IoT objects, edge devices and cloud infrastructure. The project will deliver machine learning models (MLM) learned in the cloud over data streams collected by the edge, from IoT devices. Two main functionalities will be targeted:
- Coordinate application deployment from the cloud to the edge. IoT applications can be deployed, configured, operated and maintained, using a shared infrastructure, where several applications can coexist. Edge devices will rely on the NuvlaBox appliance of SixSq.
- Continuously integrate, deploy and maintain MLMs on edge devices. Learning, which requires considerably more resources, will take place in the cloud and the learned models will be deployed at the edge. This will considerably decrease the response time and the necessary bandwidth between the cloud and edge layer, since real-time data processing will take place close to the IoT devices.
The project will deliver an Intelligence as a Service (InaaS) architecture enabling stakeholders to decrease the Total Cost Ownership of IoT applications. Several markets will be targeted: Smart City, energy, environment, etc.
InaaS will also be used to deploy “basic services” used by end user IoT applications. One of these services is the “trust score” calculation: IoT devices are often subject to misbehavior resulting from the poor quality/performance of devices or from external disturbances (e.g. wear, weather conditions, cyber or physical-attacks, physical obstructions, etc.). InaaS will be used to design and develop a generic trust tool used by IoT applications to assess trust rates of low cost IoT devices. The framework assesses the “trustworthiness” of data retrieved from IoT devices, in order to deduce their reliability. The trust score assigned to a data (received from a given IoT device) is used to make necessary “arrangements”: isolate the IoT device, fix the problem, etc.
Trust calculation relies on a current project carried out by, HES-SO (hepia) to assess the trust of 900 low quality sensors installed in Carouge (Geneva) by the Service De l’Air du Bruit et du Rayonnement non Ionisant (SABRA) and the private company Orbiwise (https://orbiwise.com/home).
The Tunisian “PNRI”project
In Tunisia we observe a Mediterranean-type zone in the north and a sub-Saharan-type zone in the south. The water resources are rather complex and are characterized by a diversity of water resources used: surface water, groundwater, and treatment wastewater. These resources are mainly used for irrigation and, to a lesser degree, for the drinking water supply in rural areas of the region. The use of these resources is provided by a complex hydraulic network consisting of pumping stations, storage tanks, transfer and distribution canals and pipelines.
In order to guarantee an optimal exploitation of the resources and to ensure water distribution to diverse agriculture sectors, the goal of the PNRI project is to deploy four types of sensors to measure water level in canals, pressure in pipes, soil humidity and climatic data. In the remainder of this document and for the sake of simplicity, these 4 types of devices will be called “PNRI IoT devices”. A LoRa IoT network is used to collect measured data. These data will be used to feed a water consumption predictive model.
The PNRI project choose the Mornag watershed as a living laboratory. This watershed covers about 400 hectares and comprises the majority of water resources in the “El Hma” basin, deep and semi-deep aquifers, the Medjerda canal and various watercourses.
The innovation brought about by this project lies mainly in the following aspects:
- Design, prototyping and realization of sensors to measure water level in canals, pressure in pipes, soil humidity and climatic data. It is planned to deploy about 200 sensors. Limiting the deployment cost will be one of the challenges of the project (low cost IoT devices). Also the measured data are analyzed and conditioned to obtain more precision by the data science system. It’s worth.
- Evaluation of water availability estimates and predictions models based on real data.
Since the PNRI IoT devices to deploy are low cost, a trust tool must be set up in order to detect low performance data collected from misbehaving sensors.
InTERiM will use the PNRI IoT devices and the IoT infrastructure that will be designed and deployed within the Tunisian PNRI project to setup a proof of concept (PoC) to the Swiss project (Figure 1): Design of a Trust tool to assess the integrity of the IoT devices deployed within the PNRI project. This tool will be based on a Machine Learning techniques deployed on edge devices (resource constrained devices). InTERiM will expand the use of InaaS (the Swiss project) to another market (in addition to the Smart City): Smart Agriculture.