Journal ArticleDOI
A Scalable and Efficient Approach for Obtaining Measurements in CAN-Based Control Systems
Reads0
Chats0
TLDR
This paper presents a solution to this problem by representing sensor measurements with an approximate representation-an interpolation of sensor measurements as a function of space coordinates, which greatly reduces the time for obtaining a snapshot of the environment state and therefore supports the real-time requirements of feedback control loops.Abstract:
The availability of small inexpensive sensor elements enables the employment of large wired or wireless sensor networks for feeding control systems. Unfortunately, the need to transmit a large number of sensor measurements over a network negatively affects the timing parameters of the control loop. This paper presents a solution to this problem by representing sensor measurements with an approximate representation-an interpolation of sensor measurements as a function of space coordinates. A priority-based medium access control (MAC) protocol is used to select the sensor messages with high information content. Thus, the information from a large number of sensor measurements is conveyed within a few messages. This approach greatly reduces the time for obtaining a snapshot of the environment state and therefore supports the real-time requirements of feedback control loops.read more
Citations
More filters
Journal ArticleDOI
A Critical Analysis of Research Potential, Challenges, and Future Directives in Industrial Wireless Sensor Networks
TL;DR: A thorough review of the existing standards and industrial protocols is presented and a critical evaluation of potential of these standards and protocols are given along with a detailed discussion on available hardware platforms, specific industrial energy harvesting techniques and their capabilities.
Journal ArticleDOI
PriorityMAC: A Priority-Enhanced MAC Protocol for Critical Traffic in Industrial Wireless Sensor and Actuator Networks
TL;DR: The experimental results indicate that PriorityMAC efficiently handles different traffic categories with different latency requirements, thereby achieving a significant improvement in the delivery latency compared with the current industrial standards.
A vision of cyber-physical internet
Anis Koubâa,Björn Andersson +1 more
TL;DR: A realistic vision to the concept of the Cyber-Physical Internet (CPI) is provided, its design requirements are discussed and the limitations of the current networking abstractions to fulfill these requirements are presented.
Journal ArticleDOI
Runtime Allocation of Optional Control Jobs to a Set of CAN-Based Networked Control Systems
TL;DR: A novel approach to networked control systems (NCS) analysis and design that provides increased control performance for a set of control loops that share a single CAN network is presented.
Journal ArticleDOI
Voting-Based Motion Estimation for Real-Time Video Transmission in Networked Mobile Camera Systems
TL;DR: A voting-based motion estimation algorithm is proposed to process the image frames captured by the mobile camera and, under limited network bandwidth, the transmitted image quality can be progressively achieved and the transmission bandwidth utilization can be effectively decreased.
References
More filters
Journal ArticleDOI
Random sample consensus: a paradigm for model fitting with applications to image analysis and automated cartography
TL;DR: New results are derived on the minimum number of landmarks needed to obtain a solution, and algorithms are presented for computing these minimum-landmark solutions in closed form that provide the basis for an automatic system that can solve the Location Determination Problem under difficult viewing.
Proceedings ArticleDOI
A two-dimensional interpolation function for irregularly-spaced data
TL;DR: In many fields using empirical areal data there arises a need for interpolating from irregularly-spaced data to produce a continuous surface as discussed by the authors, and it is assumed that a unique number (such as rainfall in meteorology, or altitude in geography) is associated with each data point.
Proceedings ArticleDOI
Telos: enabling ultra-low power wireless research
TL;DR: Telos is the latest in a line of motes developed by UC Berkeley to enable wireless sensor network (WSN) research, a new mote design built from scratch based on experiences with previous mote generations, with three major goals to enable experimentation: minimal power consumption, easy to use, and increased software and hardware robustness.
Journal ArticleDOI
Controller Area Network (CAN) schedulability analysis: Refuted, revisited and revised
TL;DR: The original schedulability analysis given for CAN messages is flawed and the priority assignment policy, previously claimed to be optimal for CAN, is not in fact optimal and a method of obtaining an optimal priority ordering that is applicable to CAN is cited.
Proceedings ArticleDOI
Distributed regression: an efficient framework for modeling sensor network data
TL;DR: An evaluation of the algorithm based upon data from a 48-node sensor network deployment at the Intel Research - Berkeley Lab is presented, demonstrating that the distributed algorithm converges to the optimal solution at a fast rate and is very robust to packet losses.