A wireless IPv6 data acquisition and control system that includes gateways, routers and rtu
Modular Outdoor Wireless Self-Configurable IPv6 Connectivity and Control System
MetrySense-3000 is a modular low-power outdoor connectivity system that interfaces digital and analog sensors, meters and actuators and connects them via a low power wireless mesh-network to IP gateways and remote monitoring centers.
Modern industries continuously expand their dependence on real-time data acquired from a growing number of sensors of multiple types, which are installed in an increasing number of machines both locally and remotely, thus expanding the area coverage of sensor networks. This trend affects power utilities, infrastructure projects, agricultural crop management and more. Such environments requires a reliable and secure control over large geographical areas, which often do not feature convenient power supply and/or communication lines in the zones where sensors are required. As a consequence, data must be collected using a flexible and scalable wireless network, independent of any external power sources, robust and that can seamlessly connect with the many types of data protocols typically used by industry. Customers for such networks also demand rapid, simple and non-intrusive deployment, easy remote monitoring, self-healing and secure communication in order to ensure a highly reliable connectivity between their monitoring and control centers as well as between the remote sensor and actuators.
In order to address this growing trend, MetrySense-3000 has been uniquely designed to provide a robust wireless network with industrial strength connectivity that meets the stringent customer requirements. The low power units can operate up to 20 years using power feeding from miniature solar panels, or alternatively can use internal primary batteries for 5 years and beyond. They are simple to install in the field, have a small physical form and housed in a IP67 waterproof casing. This reliable wireless communication technology is based on IPv6/6Lowpan and RPL routing, which is self-configuring, self-healing and secure.
Typically, a MetrySense-3000 network requires three types of MetrySense-3000 units:
(1) The Gateway unit (GU) establishes the connection to the server via any cellular network, and connects the server to the 6LoWPAN IPv6 wireless mesh network.
(2) The Router unit (RU) acts as an IPv6 router and is generally located in the field. The RU connects wirelessly to the GU or to other RUs or RTUs which are located further out in the field. All the units are collectively creating an IPv6 mesh radio network where two way information can be sent from one unit to another until it reaches the GU and then the server. Each router includes an IPv6 software stack and runs a RPL routing algorithm for creating an automatic IPv6 network structure.
(3) The Remote Terminal Unit (RTU) can be directly connected to many types of meters, sensors and actuators using both digital and analog ports, and supports a number of commercially used communication protocols.
Such layout is schematically shown in the figure below, where a single gateway unit (GU) two router units (RU) and three RTUs connects wirelessly and create a wireless IPv6 network.
The distance between two units can be up to 10 km in most environments and topologies.
The MetrySense3000 has been successfully deployed for providing connectivity and control of high voltage power grids, field irrigation systems and meteorological stations. MetrySense-3000 units can be combined with the MetrySense-4000 or MetrySense-5000 units in a modular manner in order to support different applications. For example, the MetrySense-3000 GU and RU units are used as gateways and routers in a network that include MetrySense-4000 or MetrySense-5000 sensors. In another example, MetrySense-3000 RTUs can be combined with MetrySense-5000 fault indication sensors in rural area networks, in order to support both fault indication and meter reading in remote locations.