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The wireless sensor networks (WSN) technology is becoming increasingly attractive for a wide range of real-world applications, mostly due to their shrinking size and cost, while demonstrating improved performances and functionalities. There is another critical factor that affects the operation of WSN, which is the power consumption of the nodes and their battery life. This paper highlights the important...
Energy autonomy and system lifetime are critical concerns in wireless sensor networks (WSNs), for which energy harvesting (EH) is emerging as a promising solution. Nevertheless, the tools supporting the design of EH-WSNs are limited to a few simulators that require developers to re-implement the application with programming languages different from WSN ones. Further, simulators notoriously provide...
One of the most challenging goals of many wireless sensor network (WSN) deployments is the reduction of energy consumption to extend system lifetime. This paper considers a novel combination of techniques that address energy savings at the hardware and application levels: wake-up receivers and node-level power management, plus prediction-based data collection. Individually, each technique can achieve...
Wireless Sensor Networks (WSNs) have made the power consumption crucial. Memory is known to be extremely power consuming. The increasing gap between processor and memory performance has motivated the design of systems with deep memory hierarchies, cache memory is recognized to improve the performance of memory in WSNs, therefore code transformations are a well-known hardware/software partitioning...
This paper presents the design and implementation of a wireless sensor communication system with a low power consumption for integration with energy harvesting technology, that can be employed in energy autonomous wireless sensor communication applications. The design and implementation focus on three levels: hardware, software and data transmission. The resulted system is able to satisfy all the...
With the rapid development of national economy, for dependency on the water conservancy monitoring system design put forward higher request, will wireless sensor network into water conservancy monitoring system. Introduction to the wireless sensor network hardware design, including digital water-level sensor SHT11 and CC1110 microcontroller, Communication protocol modular CC2420 to realize, Software...
Our prior work suggested the use of power traces of unresponsive sensor nodes to diagnose the cause of anomalous node silence, but suffers from its limitations in scalability. To address these issues, we propose a new concept of power watermarking, a diagnostic service that actively produces unique power watermarks for each system state of interest so as to convey system information over power measurements...
In this paper, we present the design of a baseband System-On-Chip for tracking applications in the medical environment based on the IEEE 802.15.4 standard which can be used to track patient location in hospitals. It utilizes an ARM Cortex-M1 soft-core, 16 kb of SRAM and a bus architecture based on the AHB-Lite specification. The IEEE 802.15.4 MAC primitives are implemented in a Flash-ROM of 32 kb...
This article presents the hardware software co-optimized implementation of the IEEE 802.15.4 protocol for a Wireless image Sensor Network (WiSN) node SoC. In order to to minimize the power consumption and hardware software implementation cost, a power and cost aware partition scheme is introduced. Then the optimized hardware accelerator is designed and validated with software driver/stack based on...
Energy consumption is one of the most important metrics in wireless sensor networks because of the limited power supply in sensor nodes. Many efforts have been taken to reduce the energy consumption of the hardware, software, communication protocols and applications. Simulation is widely used to evaluate the performance of these new designs. Thus, it is necessary to accurately model the energy consumption...
ZigBee wireless sensor network usually works in a complex environment, and the energy of sensor node is very limited, so energy consumption is a big problem in ZigBee wireless sensor network,especially in the multi-sensor system. Plant eco-physiological monitoring system is a typical multi-sensor system. There are many kinds of sensors in this system. These sensors, as well as ZigBee module and some...
Nowadays the WSN protocol stack based on ZigBee, such as Z-Stack, has a good performance in many respects. Yet there also exists some problems in ZigBee when applied in simple data acquisition applications with limited resources.This paper designs a more suitable WSN protocol stack named Em-Stack, which is compatible with IEEE 802.15.4. Based on the chip CC2430, Em-Stack adopts several key technologies...
This paper implements a fast disposing wireless sensor network (WSN) with low power consumption. The system, which is based on ZigBee technology, detects environment information, such as temperature, relative humidity and pressure etc. By the portable structure design, the system can be established or dismantled quickly in a desired area, such as a incomplete building, a temporary watched environment...
We propose the use of a reconfigurable hardware architecture to reduce the power consumption of small sensor node that has various sensors and wireless communication facilities, that were the result of an adaptive function specialization mechanism. Traditional sensor nodes must have had a powerful and multi functional Micro-Controller Unit (MCU) to satisfy the requirements for processing any kinds...
Driven by emerging standards, increasing energy costs, and advances in Wireless Sensor Networking, the ldquosmart homerdquo is becoming a reality for the mass market. Over a decade, professional installers have been using proprietary systems, with emergence of standards such as Zigbee, cost effective low-data rate, home solutions are now realizable. This paper presents a cluster based home area network...
Based on the study of the characteristics of ZigBee technology and the analysis of the structure of wireless sensor networks, here proposed a new reliable, flexible and inexpensive remote lighting control system based on ZigBee technology and SoC (system-on-chip) solution. This paper emphasizes on the implementation of ZigBee protocol and data communication flow. The hardware and software design are...
One of the widely used security mechanism for sensor network is the software-hardware implementation of cryptographic algorithms. If the confidential data is lost as a result of adversary effect, then the whole sensor network is prone to get exposed to the intruder. What we need is a strong mechanism, to protect such sensitive data. In this paper we present a technique where we mask all the intermediate...
In this paper, we address the issue of transmission power control (TPC) in wireless ad hoc networks. Power control plays an important role in energy saving and network performance enhancement. However, the existing TPC schemes either face the problem of hidden and exposed terminal or have additional hardware requirements. We propose a novel distributed power control protocol, called Receiver Initiated...
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