Low-cost RF 802.11g telemetry for flight guidance system development

Mobile and handheld mapping systems are becoming widely used nowadays as fast and cost-effective data acquisition systems for 3D reconstruction purposes. While most of the research and commercial systems are based on active sensors, solutions employing only cameras and photogrammetry are attracting more and more interest due to their significantly minor costs, size and power consumption. In this work we propose an ARM-based, low-cost and lightweight stereo vision mobile mapping system based on a Visual Simultaneous Localization And Mapping (V-SLAM) algorithm. The prototype system, named GuPho (Guided Photogrammetric System) also integrates an in-house guidance system which enables optimized image acquisitions, robust management of the cameras and feedback on positioning and acquisition speed. The presented results show the effectiveness of the developed prototype in mapping large scenarios, enabling motion blur prevention, robust camera exposure control and achieving accurate 3D results.

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Low cost driver device for microclimate maintenance in the pre-milking of dairy cattle

Engenharia Agrícola ◽

10.1590/s0100-69162013000100001 ◽

2013 ◽

Vol 33 (1) ◽

pp. 01-10 ◽

Cited By ~ 2

Author(s):

Irenilson M. da Silva ◽

Héliton Pandorfi ◽

Ângelo J. S. de Vasconcelos ◽

Renato Laurenti ◽

Cristiane Guiselini

Keyword(s):

Dairy Cattle ◽

Environmental Control ◽

Cooling System ◽

System Development ◽

Low Cost ◽

Cost Driver ◽

Monitoring And Control ◽

Laboratory Calibration ◽

Evaporative Cooling System ◽

And Control

Due to the importance of the environment on animal production and thus environmental control, the study aims to build a system for monitoring and control the meteorological variables, temperature and relative humidity, low cost, which can be associated with an evaporative cooling system (ECS). The system development included all the stages of assembly, test and laboratory calibration, and later the validation of the equipment carried in the field. The validation step showed results which allowed concluding that the system can be safely used in the monitoring of these variables. The controller was efficient in management of the microclimate in the waiting corral and allowed the maintenance of the air temperature within the comfort range for dairy cattle in pre-milking with averaged 25.09 ºC during the afternoon. The equipment showed the lower cost (R$ 325.76) when compared to other middle market (R$ 450.00).

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UAV-LiCAM SYSTEM DEVELOPMENT: CALIBRATION AND GEO-REFERENCING

ISPRS - International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences ◽

10.5194/isprs-archives-xlii-1-107-2018 ◽

2018 ◽

Vol XLII-1 ◽

pp. 107-114 ◽

Cited By ~ 1

Author(s):

C. Cortes ◽

M. Shahbazi ◽

P. Ménard

Keyword(s):

Particle Filtering ◽

System Development ◽

Low Cost ◽

Base Station ◽

Dual Frequency ◽

Body Frame ◽

Integrated Sensor ◽

Sensor Orientation ◽

Wide Range ◽

Gnss Measurements

<p><strong>Abstract.</strong> In the last decade, applications of unmanned aerial vehicles (UAVs), as remote-sensing platforms, have extensively been investigated for fine-scale mapping, modeling and monitoring of the environment. In few recent years, integration of 3D laser scanners and cameras onboard UAVs has also received considerable attention as these two sensors provide complementary spatial/spectral information of the environment. Since lidar performs range and bearing measurements in its body-frame, precise GNSS/INS data are required to directly geo-reference the lidar measurements in an object-fixed coordinate system. However, such data comes at the price of tactical-grade inertial navigation sensors enabled with dual-frequency RTK-GNSS receivers, which also necessitates having access to a base station and proper post-processing software. Therefore, such UAV systems equipped with lidar and camera (UAV-LiCam Systems) are too expensive to be accessible to a wide range of users. Hence, new solutions must be developed to eliminate the need for costly navigation sensors. In this paper, a two-fold solution is proposed based on an in-house developed, low-cost system: 1) a multi-sensor self-calibration approach for calibrating the Li-Cam system based on planar and cylindrical multi-directional features; 2) an integrated sensor orientation method for georeferencing based on unscented particle filtering which compensates for time-variant IMU errors and eliminates the need for GNSS measurements.</p>

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Introducing the IDEF0 Methodology in the Strategic Planning of Projects for Reclamation and Repurposing of Surface Mines

Materials Proceedings ◽

10.3390/materproc2021005026 ◽

2021 ◽

Vol 5 (1) ◽

pp. 26

Author(s):

Philip-Mark Spanidis ◽

Francis Pavloudakis ◽

Christos Roumpos

Keyword(s):

Strategic Planning ◽

System Development ◽

Low Cost ◽

Sustainable Land Use ◽

Mining Sites ◽

Surface Mines ◽

Development Tool ◽

Lignite Mine ◽

Research Questions

The closure of surface mines is a complex framework characterized by extended reclamations of post-mining sites towards an environmentally friendly and sustainable land-use system development with beneficial returns to society and the economy. The paper demonstrates the critical mine closure problem, draws research questions, and introduces the IDEF0 (Integrated DEFinition Function) process modelling method as a low-cost and easy development tool for use by mining experts to perform strategic planning of sustainable mine reclamation and repurposing projects. A case study for the method applied in a Greek lignite mine is presented.

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Fault-Tolerant Flight Guidance System for UAS Enabling Full U-space Integration

10.2514/6.2022-1146 ◽

2022 ◽

Author(s):

Sebastian Seitz ◽

Philipp Hartmann ◽

Isabelle Barz ◽

Dieter Moormann

Keyword(s):

Fault Tolerant ◽

Guidance System ◽

Flight Guidance

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Advantages and risks of crowdfunding as a model of financing startups and community development projects

Fìnansi Ukraïni ◽

10.33763/finukr2021.04.084 ◽

2021 ◽

Vol 2021 (4) ◽

pp. 84-98

Author(s):

Vitalii RYSIN ◽

Keyword(s):

Community Development ◽

System Development ◽

Low Cost ◽

Public Awareness ◽

Development Projects ◽

The Public ◽

Advantages And Disadvantages ◽

Wide Range ◽

Capital Access

Crowdfunding as a tool for alternative financing has emerged relatively recently and is of limited use in Ukraine today. At the same time, it has significant potential, which can contribute to the implementation of a wide range of projects that for various reasons are not of interest to traditional lenders or investors. The aim of the article is to determine the benefits of crowdfunding for its participants, the peculiarities of the implementation of certain types of crowdfunding and identify risks that may be generated by them, as well as develop practical recommendations for crowdfunding campaigns by entrepreneurs and authors of community development projects. The article identifies the benefits of crowdfunding for project authors (low cost of capital, access to information and potential investors) and investors (clarity, low risks, access to new products, the ability to support creative ideas), substantiates the role of crowdfunding platforms in realizing the benefits of crowdfunding. The advantages and disadvantages of using certain types of crowdfunding are described. Recommendations for planning and implementation of the main stages of crowdfunding campaigns - idea development, target audience determination, research, communication, project budgeting, reward system development, campaign schedule development – are developed. The factors of choosing a crowdfunding platform for hosting the project are determined. The possibility of using crowdfunding for collective financing of socio-cultural projects within the public budgets of the united territorial communities is shown. The risks of using crowdfunding for project authors and potential investors are identified. Those risks are primarily related to realistic expectations and proper preparation for the fundraising campaign by project authors, as well as the lack of guarantees for investors in the event of problems or bankruptcy of the crowdfunding platform. The author highlights that the growth of public awareness about the possibilities of implementing social or business initiatives through crowdfunding platforms will contribute to the development of platforms, improvement of technological equipment, and expansion of their range of services.

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Low-Cost Underwater Wireless Communication System Development Using Piezo-Ceramic Transducer

2019 1st International Conference on Advances in Science, Engineering and Robotics Technology (ICASERT) ◽

10.1109/icasert.2019.8934646 ◽

2019 ◽

Author(s):

Md. Ragib Shaharear ◽

H.A. Shakhawat Hossen Prayash ◽

Md. Farhanul Islam ◽

Tuhin Dey

Keyword(s):

Wireless Communication ◽

Communication System ◽

System Development ◽

Low Cost ◽

Wireless Communication System ◽

Ceramic Transducer ◽

Underwater Wireless Communication

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A Multidimensional Internet of Things Testbed System: Development and Evaluation

Wireless Communications and Mobile Computing ◽

10.1155/2020/8849433 ◽

2020 ◽

Vol 2020 ◽

pp. 1-17

Author(s):

Ibrahim S. Alsukayti

Keyword(s):

Internet Of Things ◽

Technology Acceptance ◽

Positive Impact ◽

System Development ◽

Low Cost ◽

Evaluation Study ◽

General Purpose ◽

Study Results ◽

Software Modules ◽

Acceptance Model

The technological breakthrough of the Internet of Things (IoT) drives the emergence of a wide scope of smart IoT solutions in different domains. Advancing the different technological aspects of these solutions requires effective IoT implementations and experimentations. This is widely addressed following low-cost and scalable methods such as analytical modeling and simulation. However, such methods are limited in capturing physical characteristics and network conditions in a realistic manner. Therefore, this paper presents an innovative IoT testbed system which facilitates practical experimentation of different IoT solutions in an effective environment. The testbed design was developed towards a general-purpose multidimensional support of different IoT properties including sensing, communication, gateway, energy management, data processing, and security. The implementation of the testbed was realized based on integrating a set of robust hardware components and developing a number of software modules. To illustrate its effectiveness, the testbed was utilized to experiment with energy efficiency of selected IoT communication technologies. This resulted in lower energy consumption using the Bluetooth Low Energy (BLE) technology compared to the Zigbee and 6LoWPAN technologies. A further evaluation study of the system was carried out following the Technology Acceptance Model (TAM). As the study results indicated, the system provides a simple yet efficient platform for conducting practical IoT experiments. It also had positive impact on users’ behavior and attitude toward IoT experimentation.

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