Analysis of the visibility and signal strength of the LoRaWAN network in an urbanized area – a case study of the Bielany campus at the Nicolaus Copernicus University in Toruń

Karpińska, Dominika; Kunz, Mieczysław

doi:10.2478/bog-2021-0039

Cited by 9 publications

(6 citation statements)

References 14 publications

(6 reference statements)

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“…For several years, systematic research has been carried out on the pollution of the night sky by artificial light in the city of Toruń 11 , 36 , 38 . The main objective is to monitor this phenomenon, including its spatial and temporal variability and the most important factors affecting it.…”

Section: Methodology Of Work On Device For Remote Measurement Of Nigh...mentioning

confidence: 99%

Device for automatic measurement of light pollution of the night sky

Karpińska

Kunz

2022

Sci Rep

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Research on light pollution of the night sky has been carried out in Toruń, Poland since 2017. Initially, the measurements were conducted within a network of 24 points using a handheld sky quality meter with lens (SQM-L) photometer (Unihedron, Canada). Based on these measurements, the first accurate maps of night sky pollution by artificial light in Toruń have been developed, both in seasonal and annual terms. Using the experience gained and elements of modern technology, a decision was made to construct an automatic network of mobile devices measuring light intensity at night, covering the entire city of Toruń. This paper presents the technical characteristics of the constructed automatic measurement devices that make up the distributed monitoring network and the process of testing and using the devices. The implementation of this project has started in 2020. To accommodate the evolving expectations of different user groups and the observed trends in the concept of Smart Cities, especially those related to the communication between devices of the Internet of Things, LoRaWAN was selected for data transmission. The first stage involved the construction of a prototype of an automatic, portable and cost-effective device, which was subjected to months of field testing under operational conditions. The device was built using off-the-shelf electronic components and a housing that met the requirements for outdoor use. The next stage was to calibrate the device by simultaneously comparing the obtained results with measurements taken using professional SQM devices. This was followed by the preparation of 35 identical devices, which are already operating in the measurement network in the city of Toruń. Elements of the network are prepared in a way that allows for further expansion and makes data available in the form of an application for many recipients.

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Section: Methodology Of Work On Device For Remote Measurement Of Nigh...mentioning

confidence: 99%

Device for automatic measurement of light pollution of the night sky

Karpińska

Kunz

2022

Sci Rep

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“…As, choosing a vacant or agricultural land is considered more suitable and costs less than choosing an occupied land that may need a deconstruction or reform operation. Moreover, campuses located away from their respective cities may create extra loads on the resources of the university to offer needed infrastructure such as network services, telecommunications, or transporting supplies and materials [30]. Therefore, the resultant suitable areas produced by the model need to go through a round of assessment to determine what location is considered more appropriate.…”

Section: Discussion and Reflectionmentioning

confidence: 99%

Where to build? A suitability modelling approach for university campuses location-allocation in Japan

Ahmed M.S. Mohammed,

Ukai

2023

Proceedings of International Exchange and Innovation Conference on Engineering &Amp; Sciences (IEICES)

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This research underscores the impact of university campuses, encompassing physical, economic, cultural, and social dimensions of their surroundings. Consequently, the selection of a suitable campus location should consider both the physical appropriateness and the preferences of key users, namely the students. This paper presents a suitability model employing the geographical information system (GIS) weighted overlay methodology to address this concern. The model employs criteria such as land use, land value, accessibility, and the mix of land uses to identify appropriate locations for university campuses in four Japanese cities. Findings reveal that suitable sites are predominantly found in the suburban areas of these cities, potentially leading to a studentification trend and social segregation between students and nonstudent residents. Additionally, placing campuses on city peripheries could strain university resources by incurring higher infrastructure costs. Therefore, decision-makers must carefully weigh location suitability against the ensuing social and economic implications to foster a successful campus-city relationship.

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“…A complementary, but from a practical point of view extremely important, activity carried out simultaneously was a eld experiment to check the quality and strength of the signal of the previously selected data transmission technology [22,23]. This was necessary for planning and designing the distribution of the devices within the city limits and within the range of the access gateways.…”

Section: Auxiliary Stages Of Project Implementationmentioning

confidence: 99%

Measuring light pollution in the night sky – from technology demonstrator to monitoring system

Karpińska

Kunz

2023

Preprint

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Pollution of the night sky by artificial light has now become an important element of the modern city landscape. The decline in the quality of the sky observed at night in urban areas has already been noticed even by residents unaware of its origin. A starry sky is nowadays not easy to observe even in places far from large conurbations or smaller cities. More and more places are losing access to the previously natural privilege of observing the dark sky, and their inhabitants are thus systematically exposed to all the direct and indirect negative effects of this phenomenon. Monitoring the brightness of the night sky is gaining interest from a growing number of interdisciplinary research groups being established around the world, including Poland. In Toruń, the first measurements of the magnitude of this phenomenon, together with the determination of its spatial scale, were started using handheld devices in 2017. In the following years, efforts were made to improve the data acquisition process by creating a prototype – a technology demonstrator and, consequently, a commercial version of an automatic device measuring the surface brightness of the night sky. This paper presents the stages of the project aimed at developing a light pollution monitoring system, which has been consistently implemented in Toruń. The most important component of this system is a measuring device of our own design and construction. The monitoring system designed and operating in Toruń, starting in 2019, is being further developed with new components and monitoring (measurement) sites being systematically added, making the city’s observation network increasingly dense. The devices built using the LoRa standard for wireless data exchange implement the concept of the Internet of Things, fitting in with the objectives of a smart city.

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Analysis of the visibility and signal strength of the LoRaWAN network in an urbanized area – a case study of the Bielany campus at the Nicolaus Copernicus University in Toruń

Cited by 9 publications

References 14 publications

Device for automatic measurement of light pollution of the night sky

Device for automatic measurement of light pollution of the night sky

Where to build? A suitability modelling approach for university campuses location-allocation in Japan

Measuring light pollution in the night sky – from technology demonstrator to monitoring system

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