Abstract
Industry 4.0, or smart factory, refers to the fourth industrial revolution, as a result of which it is expected that massive sensor deployment, high device connectivity, automation, and real-time data acquisition support improve industrial processes. Sensor fault detection and operator tracking allow adequate performance of the sensor network supporting Industry 4.0, and sensor localization has become crucial to enable sensor fault detection. Hence, the development of new localization methods is necessary for environments where GPS localization technology is unfeasible. Furthermore, position location information (PLI) is a crucial requirement for the deployment of multiple services and applications in wireless ad hoc and sensor networks supporting Industry 4.0. Three-dimensional (3D) scenarios are considered to extend the applicability of PLI-based services. However, PLI acquisition presents several challenges within any 3D ad hoc sensor network paradigm. For instance, conventional triangulation algorithms are often no longer applicable due to the lack of direct land-fixed references and the inclusion of a third-dimension coordinate. In this paper, a PL relational searching algorithm suitable for 2D and 3D ad hoc environments was formulated in terms of a discretized searching space and a vertex weight assignment process according to distance relationships from anchor nodes to the node to be located on a feasibility space. The applicability of the proposed algorithm was examined through analytic formulation and simulation processes. Results show small distance errors (less than 1 m) are achievable for some scenarios.
Highlights
On a daily basis, position location (PL) becomes a more important issue in wireless systems for security and law enforcement purposes, as well as for resource management, new location-based services (LBSs), and applications (LBAs)
A PL relational searching algorithm suitable for 2D and 3D ad hoc environments was formulated in terms of a discretized searching space and a vertex weight assignment process according to distance relationships from anchor nodes to the node to be located on a feasibility space
We introduce a new relational searching localization method that is not based on any previous localization technique
Summary
Position location (PL) becomes a more important issue in wireless systems for security and law enforcement purposes, as well as for resource management, new location-based services (LBSs), and applications (LBAs). Most of the literature has been focused on planar scenarios. Sensor networks and the Internet of Things (IoT) have become pervasive concepts that are expected to be used in billions of devices with multiple applications. The number of IoT-connected devices in 2018 was about 7 billion. The value of IoT and sensor networks is often related to location information. The importance of 3D localization becomes more relevant, as it enables a wide variety of new LBS and new LBA
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
