Problem statement: Wireless Sensor Networks (WSNs) comprise of small nodes with sensing, computation and wireless communication capabilities. Nodes in a sensor network are severely constrained by energy and computing power. Continuous working of sensor nodes leads to quick depletion of battery power and reduces the overall lifetime. To prolong the lifetime of the sensor nodes, efficient routing...

This paper presented an approach for modeling and implementing the architecture of sensor networks reconfigurable applications using an active rule-based model. Considering the adaptability and flexibility of sensor networks applications, the active rule-based model was defined based on a service resource model by combining both the semantic context and the service description. The analysis ind...

3-D object recognition involves using image-computable features to identify 3-D object. A single view of a 3-D object may not contain sufficient features to recognize it unambiguously. One needs to plan different views around the given object in order to recognize it. Such a task involves an active sensor – one whose parameters (external and/or internal) can be changed in a purposive manner. In...

Hydrazine has been identified as a carcinogenic mutagenic, hepatotoxic, and neurotoxin material. A metal-organic framework with tetragonal symmetry, DMOF-1 (Zn2(bdc)2dabco) was synthesized by a versatile and facile technique, followed by its efficient development and validation as hydrazine electrochemical sensor. Differential pulse voltammetry (DPV), linear sweep voltammetry (LSV), and c...

As network has become more distributed, more global, and more complex, it has simultaneously become more exposed to threats and cyber terrors. In this paper, we suggest active security technology using sensors in active network, and sensor management mechanism using managing sensors. Also, we manage requirements for managing sensors in active security technology. It can be distinguished active ...

e2v is a leading global provider of high performance image sensors for space applications with over 100 devices flown in missions ranging from Earth observation to planetary exploration and space science. End users include all of the world’s large space agencies and major satellite providers. With expertise in high sensitivity, low noise and large format sensors, e2v has provided the CCDs that ...

Recent advancements in CMOS image sensor technology are reviewed, including both passive pixel sensors and active pixel sensors. On-chip analog to digital converters and on-chip timing and control circuits permit realization of an electronic camera-on-a-chip.

Article history: Available online 21 May 2008 The review of this paper was arranged by Jurriaan Schmitz 0038-1101/$ see front matter 2008 Elsevier Ltd. A doi:10.1016/j.sse.2008.04.012 * Address: Delft University of Technology, Mekel Netherlands. E-mail addresses: [email protected] This paper gives an overview of the state-of-the-art of CMOS image sensors. The main focus is put on ...

A deep sub-electron read noise and high conversion gain CMOS image sensor using reset-gate-less pixel has been developed and demonstrated for the first time at photoelectron-counting-level imaging. The developed CIS based on a multiple sampling technique has a high conversion gain of 220μV/eand a low read noise of 0.27e-rms.

Image sensors based on the CMOS technology became commonly used sources of image information in PC-based vision systems. Image information is converted directly on the chip to a stream of synchronous digital data which can be transferred to a PC using the cost-effective interface introduced in this contribution. The CMOS image sensor together with the developed interface can be considered as a ...