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All Journal Southeast Asian Journal of Technology and Science
Abdullah, Norzilawati
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Education Electrical & Electronics Engineering Energy Industrial & Manufacturing Engineering Mechanical Engineering Social Sciences Other

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Multi-node distance measurement using LoRa technology: a study on the relationship between RSSI and range Embong, Norlia; Abdullah, Norzilawati; Ambak, Zulkifli
Southeast Asian Journal of Technology and Science Vol 5, No 2 (2024): Southeast Asian Journal of Technology and Science
Publisher : Indonesian Institute for Counseling, Education, and Therapy (IICET)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29210/810480600

Abstract

Distance is a significant factor in many smart cities, smart agriculture, and smart environment applications of the Internet of Things (IoT). LoRa, which is a Long-Range technology, low-power, is mainly employed in the IoT networks for distance measurement. On the other hand, the relationship between the Received Signal Strength Indicator (RSSI) and the distance range in the multi-node configuration using LoRa technology based on distance measurement is still being studied. The subject of the experimental research paper is the LoRa technology, which concerns distance measurement and the impact of the modulation scheme. The tests show that the RSSI values drop exponentially with the increase in distance while the Spread Factor (SF) 12 modulation scheme is being used. Besides that, the other results show the distance measurement of LoRa-based wireless communication can be increased up to 1 km with a minimum RSSI value of -120 dBm.
NodeMCU-enabled intelligent fertigation system for efficient water and nutrient management Zatun Najhah Kurasli, Engku Nor; Abdullah, Norzilawati; Wan Salleh, Wan Mohd Za’im Bin
Southeast Asian Journal of Technology and Science Vol 5, No 1 (2024): Southeast Asian Journal of Technology and Science
Publisher : Indonesian Institute for Counseling, Education, and Therapy (IICET)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29210/810458500

Abstract

Fertigation is a methodology that encompasses the direct application of fertilizers via irrigation water systems, thereby augmenting the delivery of nutrients to plants and reducing the wastage of valuable nutrients, consequently enhancing both crop yield and quality. Specific injection tools are used to introduce nutrient solutions into the irrigation water (Shukla et al., 2018). This technique is particularly beneficial for farmers managing a large quantity of plants, as it streamlines the process by ensuring a consistent supply of water and fertilizers to the crops. Most farmers cannot be present in their fields around the clock and this method demands continuous monitoring of fertilizer and water levels. As a result, this project aims to showcase how the Smart Fertigation system project will address the challenges faced by farmers who adopt this method. This project promotes a monitoring mechanism that tracks water and fertilizer levels and monitors moisture and ambient temperature around the plants, thereby providing farmers with comprehensive insights.
NodeMCU-enabled intelligent fertigation system for efficient water and nutrient management Zatun Najhah Kurasli, Engku Nor; Abdullah, Norzilawati; Wan Salleh, Wan Mohd Za’im Bin
Southeast Asian Journal of Technology and Science Vol. 5 No. 1 (2024): Southeast Asian Journal of Technology and Science
Publisher : Indonesian Institute for Counseling, Education, and Therapy (IICET)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29210/810458500

Abstract

Fertigation is a methodology that encompasses the direct application of fertilizers via irrigation water systems, thereby augmenting the delivery of nutrients to plants and reducing the wastage of valuable nutrients, consequently enhancing both crop yield and quality. Specific injection tools are used to introduce nutrient solutions into the irrigation water (Shukla et al., 2018). This technique is particularly beneficial for farmers managing a large quantity of plants, as it streamlines the process by ensuring a consistent supply of water and fertilizers to the crops. Most farmers cannot be present in their fields around the clock and this method demands continuous monitoring of fertilizer and water levels. As a result, this project aims to showcase how the Smart Fertigation system project will address the challenges faced by farmers who adopt this method. This project promotes a monitoring mechanism that tracks water and fertilizer levels and monitors moisture and ambient temperature around the plants, thereby providing farmers with comprehensive insights.
Multi-node distance measurement using LoRa technology: a study on the relationship between RSSI and range Embong, Norlia; Abdullah, Norzilawati; Ambak, Zulkifli
Southeast Asian Journal of Technology and Science Vol. 5 No. 2 (2024): Southeast Asian Journal of Technology and Science
Publisher : Indonesian Institute for Counseling, Education, and Therapy (IICET)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29210/810480600

Abstract

Distance is a significant factor in many smart cities, smart agriculture, and smart environment applications of the Internet of Things (IoT). LoRa, which is a Long-Range technology, low-power, is mainly employed in the IoT networks for distance measurement. On the other hand, the relationship between the Received Signal Strength Indicator (RSSI) and the distance range in the multi-node configuration using LoRa technology based on distance measurement is still being studied. The subject of the experimental research paper is the LoRa technology, which concerns distance measurement and the impact of the modulation scheme. The tests show that the RSSI values drop exponentially with the increase in distance while the Spread Factor (SF) 12 modulation scheme is being used. Besides that, the other results show the distance measurement of LoRa-based wireless communication can be increased up to 1 km with a minimum RSSI value of -120 dBm.
Co-Authors Ambak, Zulkifli Embong, Norlia Wan Salleh, Wan Mohd Za’im Bin Wan Salleh, Wan Mohd Za’im Bin Zatun Najhah Kurasli, Engku Nor