particle sensor node

Improved distance estimation with node selection ...

In a case where sensor nodes are in an area with obstacles, direct communication between certain pairs of nodes is impracticable; the data must be relayed over multihop (or detour) routes. One promising approach to improve the accuracy of sensor-node distance estimation is to segment (or cluster) sensor nodes to a restricted set of anchor nodes ...

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Evaluation of Nine Low-cost-sensor-based Particulate ...

01-02-2020 · ABSTRACT Due to their affordability, compact size, and moderate accuracy, low-cost sensors have been studied extensively in recent years. Different manufacturers employ different calibration methodologies and provide users with calibration factors for their models. This study assessed the performance of nine low-cost PM monitors (AirVisual, Alphasense, APT, Awair, Dylos, …

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Low-energy PSO-based node positioning in optical wireless ...

Mar 01, 2019 · This paper combines Particle Swarm Optimization (PSO) with node positioning algorithms to improve energy consumption in optical wireless sensor networks. The network under consideration adopts a hierarchical distributed structure, which is composed of multiple clusters, wherein the cluster head (CH) is an optical node, and the remaining nodes ...

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Positioning optimisation based on particle quality ...

Mar 01, 2019 · When the target node continues to move to the right with a constant velocity, the particles are also moved to the right. When the node arrives at the second red star, the algorithm updates the particle weights, as shown in Fig. 2 c. After the weight updating and resampling, most particles aggregate near the target node.

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New Particle Matter - Dust Sensor (PM1 / PM2.5 / PM10 ...

May 05, 2015 · Libelium new particle matter sensor uses light scattering theory and particle counting technology and can accurately detect the number of particles in its surroundings to provide useful reference data for environmental improvement. With the new dust sensor we can obtain information about particle size and density ranging from 1um to 10um (PM1 / PM2.5 / PM10). Read More.

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Node Localization in Wireless Sensor Networks Using ...

Mar 18, 2017 · Accurate localization of sensor nodes has a strong influence on the performance of a wireless sensor network. In this paper, a node localization scheme using the application of nature-inspired metaheuristic algorithm, i.e., butterfly optimization algorithm, is proposed. In order to validate the proposed scheme, it is simulated on different sizes of sensor networks ranging from 25 to 150 nodes ...

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Particle swarm optimization based energy efficient ...

Abstract In a WSN, sensor node plays a significant role. Working of sensor node depends upon its battery's life. Replacements of batteries are found infeasible once they are deployed in a remote or unattended area. Plethora of research had been conducted to address this challenge, but they suffer one or the other way. In this paper, a particle swarm optimization (PSO) algorithm integrated with ...

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