The detection of evaporating hazardous material released from moving sources using a gas sensor network

Becher, C.; Kaul, Peter; Mitrovics, Jan; Warmer, Johannes

doi:10.1016/j.snb.2009.12.030

Cited by 35 publications

(15 citation statements)

References 8 publications

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“…Environment monitoring is a data collecting and analyzing process actually. Many systems have been developed for environment monitoring, such as systems for gas pollution monitoring in [23][24][25][26][27][28][29][30][31][32] and systems for water pollution monitoring in [33][34][35][36][37][38][39][40][41][42][43][44][45]. The monitoring system always includes sensor nodes, a sink node, and a processing center.…”

Section: Sensor Network Systems For Environment Monitoringmentioning

confidence: 99%

A Survey on Pollution Monitoring Using Sensor Networks in Environment Protection

Luo

Yang

2019

Journal of Sensors

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Detecting pollution timely and locating the pollution source is of great importance in environmental protection. Considering advantages of the sensor network technology, sensor networks have been adopted in pollution monitoring works. In this paper, a survey on researches of pollution monitoring using sensor networks in environment protection is given. Firstly, sensors and pollution monitoring network systems are studied. Secondly, different pollution detection methods are analyzed and compared. Thirdly, an overview of state-of-art technologies on pollution source localization is given. Finally, challenges on pollution monitoring using sensor networks are presented.

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Section: Sensor Network Systems For Environment Monitoringmentioning

confidence: 99%

A Survey on Pollution Monitoring Using Sensor Networks in Environment Protection

Luo

Yang

2019

Journal of Sensors

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“…The inadequate long-term stability of many research prototypes of gas sensors further prevents their reliable applications in WSNs. Thus, examples of sensors in WSNs include commercially-available gas and VOC sensors [41–43] that often consume significant power (30–50 mW and up to 400 mW per sensor) [43,44]. Low power consumption in commercially-available systems was reported using only simple humidity sensors [41,42].…”

Section: Discussionmentioning

confidence: 99%

Wireless sensors and sensor networks for homeland security applications

Potyrailo

Nagraj

Surman

et al. 2012

TrAC Trends in Analytical Chemistry

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New sensor technologies for homeland security applications must meet the key requirements of sensitivity to detect agents below risk levels, selectivity to provide minimal false-alarm rates, and response speed to operate in high throughput environments, such as airports, sea ports, and other public places. Chemical detection using existing sensor systems is facing a major challenge of selectivity. In this review, we provide a brief summary of chemical threats of homeland security importance; focus in detail on modern concepts in chemical sensing; examine the origins of the most significant unmet needs in existing chemical sensors; and, analyze opportunities, specific requirements, and challenges for wireless chemical sensors and wireless sensor networks (WSNs). We further review a new approach for selective chemical sensing that involves the combination of a sensing material that has different response mechanisms to different species of interest, with a transducer that has a multi-variable signal-transduction ability. This new selective chemical-sensing approach was realized using an attractive ubiquitous platform of battery-free passive radio-frequency identification (RFID) tags adapted for chemical sensing. We illustrate the performance of RFID sensors developed in measurements of toxic industrial materials, humidity-independent detection of toxic vapors, and detection of chemical-agent simulants, explosives, and strong oxidizers.

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“…With this knowledge a detection of TATP in the vapor phase seems to be more easy in comparison to TNT and other explosives. Nevertheless, the requirements for the sensitivity of a sensor for TATP are challenging because under realistic conditions the explosive might be packaged and dilution from the source to the sensor must be taken into account .…”

Section: Introductionmentioning

confidence: 99%

Detection of triacetone triperoxide using temperature cycled metal‐oxide semiconductor gas sensors

Warmer

Wagner

Schöning

et al. 2015

Physica Status Solidi (a)

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The temperature‐dependent sensing properties of metal‐oxide semiconductor gas sensors (MOX), based on SnO2 and WO3, to measure triacetone triperoxide (TATP), diacetone diperoxid (DADP), and di‐tert‐butyl‐peroxide (DTBP) and acetone are described. Conductivity measurements in the range from 100 to 400 °C operating temperature show two different reaction pathways on the surface for WO3 sensors. At temperatures below 150 °C organic peroxides react as an oxidizer which leads to an increase in the sensor resistance. Above 200 °C they react as a reducing agent that leads to a decrease of the sensor resistance. This effect is caused by two different, peroxide dependent reaction paths. The unique behavior of WO3‐based sensors can be used for selectivity enhancements in temperature cycle operation mode. With this method gas concentrations down to a few ppb are detectable. Scheme of TATP reacting on tungsten oxide semiconductor gas sensor. TATP decomposes and this leads to an increase of the sensor resistance at low temperatures and a decrease of resistance at high temperatures.

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The detection of evaporating hazardous material released from moving sources using a gas sensor network

Cited by 35 publications

References 8 publications

A Survey on Pollution Monitoring Using Sensor Networks in Environment Protection

A Survey on Pollution Monitoring Using Sensor Networks in Environment Protection

Wireless sensors and sensor networks for homeland security applications

Detection of triacetone triperoxide using temperature cycled metal‐oxide semiconductor gas sensors

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