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In this work, we propose an object behavior evaluation system based on wireless sensor network. By the behavior information of objects contacted with human, it can evaluate the behavior characteristics of human under the interactions between human and environment, which goes beyond the traditional evaluation methods that directly monitor human themselves. The system can track and monitor the motion...
In this paper, we describe a 920 MHz band long range wireless SAW passive tag system (WSPTS) for vibration monitoring, which achieves more than 10m reading distance. For the purpose of structural health monitoring (SHM) of aging infrastructures (e.g. bridge, building, and so forth), passive wireless sensor systems are an attractive option because they are operated battery-less and almost maintenance...
In this paper, we describe a 920 MHz band long range wireless SAW passive tag system (WSPTS) for vibration monitoring, which achieves more than 15 m reading distance. For the purpose of structural health monitoring (SHM) of aging infrastructures (e.g. bridge, building, and so forth), passive wireless sensor systems are an attractive option because they are operated battery-less and almost maintenance...
Landslides are one of the major natural disasters and an early detection of landslide can be achieved by identifying the landslide triggering vibrations recorded using a geophone network. The major research challenges in this effort are network energy consumption, noise removal and development of a wireless network for transmitting the captured signals. This paper presents design and testing of a...
In this work, a self-generated power capacitance measurement circuit for wireless health monitoring system is proposed. Hybrid energy from thermal and solar energy is expected to be used to supply the energy harvester. The present results has shown using low cost, off-the-shelf components, the capacitance measurement circuit is able to sense a linear capacitance range of 9.8 – 10.35 pF over 1.478...
Vibration analysis provides relevant information about abnormal working condition of machine parts. Vibration measurement is prerequisite for vibration analysis which is used for condition monitoring of machinery. Also, wireless vibration monitoring has many advantages over wired monitoring. This Paper presents, implementation of a reliable and low cost wireless vibration monitoring system. Vibration...
This paper presents design and implementation of a spatially distributed measurement system using Wireless Sensor Networks (WSN) for real-time condition and performance monitoring of industrial machines in a manufacturing system setting. Main focus in this study was given to applications in small-to-medium size metalworking industry, where most of the machinery are conventional and do not support...
In recent years, the use of wireless sensor networks for vibration monitoring is emphasized, because of its capability to continuously monitor at hard-to-reach locations of complex machines. Low power consumption is one of the main requirements for the sensor nodes in continuous and long-term vibration monitoring. However, the power consumption of state-of-the-art wireless sensor nodes is significantly...
The prime objective of this research work is to present prompt, cost effective, and an ultra low power online vibration monitoring system using a microcontroller (MSP430f6638) and also transmit the vibration signal in the form of 4-20 mA, wired or wireless signal. As vibration is a very crucial parameter, its measurement is a prerequisite in mechanical industries to predict machine health, and to...
Motor systems are critical equipment in modern industry. To make the equipment maintenance more efficient, this paper proposes an online and remote machine condition monitoring and fault diagnosis system for motor system based on WIA-PA (Wireless network for Industry Automation — Process Automation). The system continuously monitors the status of the target motor systems using wireless vibration transmitters...
This paper reviews energy harvesting technologies for structural health monitoring applications. Structural health monitoring (SHM) is the process of damage detection in machinery, aerospace, and civil structures. There is a great deal of interest across a broad section of industries in obtaining technology that can be used to monitor the health of machinery and structures. In particular, the need...
The paper provides a framework to save energy and reduce the operative cost of some of today's industrial machinery. Low cost and low power wireless sensor networks is a novel approach to monitoring the tools in order to save energy and keep the tools monitored. Cutting tool wear degrades the product quality in manufacturing processes and also could have implications in health and safety of use. Monitoring...
During the past, nuclear power plants personnel has established a list of parameters that need permanent monitoring due to the fact that they directly influence the decisional process in avoiding alarming states or reducing the outcome of potential incidents. All this have lead to the need for an integrated monitoring, processing and alarming system. A potential beneficiary would have great interest...
As wireless sensor networks (WSNs) have developed over the last decade, environmental scientists have widely adapted this new technology to monitor various phenomena in the natural environment, for example, debris flows, pollution, volcanoes, and so on. However, significant efforts are still needed to customize WSN design for certain special requirements. To remedy the redundancy of efforts to customize...
Aging plants and reduced workforces are causing commercial nuclear power reactors to limit the extent of their predictive maintenance programs to only critical to safety and critical to operation systems. Some sites are even forced into living with a reactive maintenance strategy for all but the most critical systems. This typically leads to significant expense through costly downtime and component...
The Mote architecture is the most popular platform used in wireless sensor network applications. In this architecture, microcontroller is responsible for all jobs, such as scheduling, sampling, computing, and communication. In the past one year, two practical applications: bridge structural health monitoring system and rare animal monitoring system are developed and deployed in Wuxi and Beijing, China...
This demonstration shows the usage of a heterogeneous sensor node (HaLOEWEn) for structural health monitoring applications. It employs the Random Decrement technique to aggregate compressed structural health data from a long-term stream of raw sensor data.
This paper addresses the development of an energy-autonomous wireless vibration sensor for condition-based monitoring of machinery. Such technology plays an increasingly important role in modern manufacturing industry. In this work, energy harvesting is realized by resorting to a custom designed thermoelectric generator. The developed wireless vibration sensor has a remotely tunable sampling rate,...
In allusion to the current developing situation and shortcoming of transmission lin aeolian vibration monitoring. a transmission lin aeolian vibration monitoring system is designed based on CC2430 for wireless transmission, the design scheme and architecture are introduced. The emphasis of design is the system hardware circuit including sensor module, signal processing, filtering and amplifier module,...
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