scholarly journals Construction and assessment of a low cost NDVI sensor

2019 ◽  
Author(s):  
Rafaella Pironato Amaro ◽  
Luiz Henrique Antunes Rodrigues ◽  
Felipe Ferreira Bocca
Keyword(s):  
Light Intensity ◽  
Monitoring System ◽  
Low Cost ◽  
High Capacity ◽  
Low Correlation ◽  
Growing Conditions ◽  
Cost Components ◽  
Temporal Inconsistency

Given the potential of low cost sensors for agriculture, a monitoring system with low cost components was constructed to evaluate its capacity to detect variations in vegetative vigor in smooth lettuce seedlings under different growing conditions. The results showed temporal inconsistency and low variability in NDVI values. The inconsistency can be attributed mainly to factors such as luminosity and the high capacity of retention of water and nutrients of the substrate. Days with milder light intensity produced potentially better NDVI values. The low variability of NDVI eventually contributed to its low correlation with mass.

Design of the Wireless Monitoring System Based on CC1100 in Greenhouse

2014 ◽  
Vol 945-949 ◽  
pp. 2709-2712
Author(s):  
Jie Bao ◽  
Hong Bin Chen ◽  
Ren Xia Ou ◽  
Jie Wu
Keyword(s):  
Carbon Dioxide ◽  
Control System ◽  
Wireless Communication ◽  
Light Intensity ◽  
Monitoring System ◽  
Small Volume ◽  
Low Cost ◽  
Carbon Dioxide Concentration ◽  
Wireless Monitoring ◽  
Communication Module

For real-time monitoring of the factors in the greenhouses such as temperature, humidity, carbon dioxide concentration, light intensity. Design for the greenhouse wireless monitoring system based on CC1100 chip. To realize data acquisition and transmission via the combination of the CC1100 wireless communication module and MCU control system. After testing the system has the characteristics of small volume, simple operation, low cost and strong practicability etc.

scholarly journals LOW COST WIRELESS WEATHER MONITORING SYSTEM

2020 ◽  
Vol 1 (1) ◽  
pp. 35-39 ◽  
Author(s):  
Kirankumar Sutar
Keyword(s):  
Light Intensity ◽  
Monitoring System ◽  
Human Life ◽  
Low Cost ◽  
Cost Effective ◽  
Weather Conditions ◽  
Agricultural Field ◽  
Sensor Module ◽  
Weather Parameters ◽  
Weather Changes

Weather monitoring holds great importance and have uses in several areas ranging from keeping track of agricultural field weather conditions to industrial conditions monitoring. Weather monitoring plays an important role in human life, so the collection of information about weather changes is very important. This paper describes a weather monitoring system which enables the monitoring of weather parameters like Temperature, Humidity and Light intensity. Sensor module includes the sensors like temperature, humidity and light sensor. The system is developed using ZigBee wireless module. The measured weather parameters are Temperature, Humidity and Light intensity. The developed system is cost effective, compact and portable.

scholarly journals Internet of Things-Based Smart Farming Monitoring System for Bolting Reduction in Onion Farms

2021 ◽  
Vol 2021 ◽  
pp. 1-15
Author(s):  
Zahid Khan ◽  
Muhammad Zahid Khan ◽  
Sikandar Ali ◽  
Irshad Ahmed Abbasi ◽  
Haseeb Ur Rahman ◽  
...  
Keyword(s):  
Environmental Factors ◽  
Internet Of Things ◽  
Light Intensity ◽  
Monitoring System ◽  
Low Cost ◽  
Poor Quality ◽  
Test Bed ◽  
Smart Farming ◽  
Internet Of Things Technology ◽  
Closed Environment

According to the Pakistan Bureau of Statistics, Pakistan is amongst the top ten onion-producing countries in the world. Though in Pakistan, most of the districts of Khyber Pakhtunkhwa produce onions, Malakand division lonely contributes 60% of the total onion production of the country. In onion farming, bolting is an insidious phenomenon that occurs in onion plants due to fluctuations in environmental factors such as temperature, humidity, and light intensity. Due to bolting, the flowering stem of an onion plant is produced before the crop is harvested, resulting in a poor-quality harvest and yield. Therefore, from a farmer’s perspective, it is highly desirable to monitor and control the environmental factors to avoid bolting. In this paper, we propose and design a new prototype, namely, a smart farming monitoring system (SFMS) for bolting reduction, which is based on the generic three-layered IoT architecture. By using IoT (Internet of things) technology and careful remote monitoring, a more favorable environment can be provided to reduce and avoid onion bolting. To analyze the efficacy and performance of the proposed SFMS, a real test-bed implementation was carried out. The SFMS prototype was installed both in the open and in a greenhouse environment to monitor onion crops. Based on the data received via sensors, the percentage of onion bolting was recorded as 16.7% in the open environment while 3% in the closed environment. In the closed environment, optimal temperature, humidity, and light intensity were provided to the onion crops using the SFMS. For this reason, the percentage of onion bolting was reduced from 16.7% to 3%, consequently yielding better onion production. Moreover, the SFMS is a low-cost, easy-to-install solution that is developed with locally available hardware and resources, and we believe that this new solution can transform conventional onion farming into a more productive and convenient smart farming in the region.

CuS2 sheets: a hidden anode material with a high capacity for sodium-ion batteries

2021 ◽  
Author(s):  
Shaohua Lu ◽  
Weidong Hu ◽  
Xiaojun Hu
Keyword(s):  
Lithium Ion Batteries ◽  
Anode Material ◽  
Low Cost ◽  
High Capacity ◽  
Lithium Ion ◽  
Sodium Ion ◽  
Sodium Ion Batteries

Due to their low cost and improved safety compared to lithium-ion batteries, sodium-ion batteries have attracted worldwide attention in recent decades.

Visible Light Assisted Hantzsch Reaction: Synthesis of Polycyclic Dihydropyridines

2019 ◽  
Vol 16 (8) ◽  
pp. 676-682
Author(s):  
Ankusab Noorahmadsab Nadaf ◽  
Kalegowda Shivashankar
Keyword(s):  
Reaction Time ◽  
Light Intensity ◽  
Ammonium Acetate ◽  
Low Cost ◽  
Aromatic Aldehydes ◽  
Light Irradiation ◽  
High Yield ◽  
Short Reaction Time ◽  
Green Protocol ◽  
Dihydropyridine Derivatives

The polycyclic dihydropyridine nucleus represents the heterocyclic system of invaluable core motifs with wide applications in chemical, biological and physical properties. Although this kind of compounds have been extensively synthesized by other groups, the synthesis of these compounds under CFL light intensity were not explored. The synthesis of polycyclic dihydropyridine derivatives were achieved through the reaction of 4-hydroxycoumarin, aromatic aldehydes and ammonium acetate under CFL light irradiation conditions. A series of polycyclic dihydropyridine derivatives were prepared under CFL light irradiation conditions with high yield, short reaction time, ambient condition and without the use of catalyst. The results displayed an efficient method for the synthesis of polycyclic dihydropyridine derivatives. Clean profile, short reaction time, low cost and use of CFL light intensity instead of catalyst making it a genuinely green protocol.

scholarly journals COVIMOS: A Coastal Video Monitoring System

2017 ◽  
Vol 1 (1) ◽  
pp. 1
Author(s):  
I Made Oka Widyantara ◽  
I Made Dwi Asana Putra ◽  
Ida Bagus Putu Adnyana
Keyword(s):  
Monitoring System ◽  
Nearest Neighbor ◽  
Low Cost ◽  
Video Image ◽  
Video Monitoring ◽  
Reference Object ◽  
Self Organizing Map ◽  
K Nearest Neighbor ◽  
Ip Camera ◽  
Class Labels

This paper intends to explain the development of Coastal Video Monitoring System (CoViMoS) with the main characteristics including low-cost and easy implementation. CoViMoS characteristics have been realized using the device IP camera for video image acquisition, and development of software applications with the main features including detection of shoreline and it changes are automatically. This capability was based on segmentation and classification techniques based on data mining. Detection of shoreline is done by segmenting a video image of the beach, to get a cluster of objects, namely land, sea and sky, using Self Organizing Map (SOM) algorithms. The mechanism of classification is done using K-Nearest Neighbor (K-NN) algorithms to provide the class labels to objects that have been generated on the segmentation process. Furthermore, the classification of land used as a reference object in the detection of costline. Implementation CoViMoS system for monitoring systems in Cucukan Beach, Gianyar regency, have shown that the developed system is able to detect the shoreline and its changes automatically.

A Simple, Low-cost Multi-sensor-based Smart Wearable Knee Monitoring System

2020 ◽  
pp. 1-1
Author(s):  
Abu Ilius Faisal ◽  
Sumit Majumder ◽  
Ryan Scott ◽  
Tapas Mondal ◽  
David Cowan ◽  
...  
Keyword(s):  
Monitoring System ◽  
Low Cost ◽  
Smart Wearable

scholarly journals Android Based Low Cost Sitting Posture Monitoring System

2020 ◽  
Author(s):  
Nusrat Binta Nizam ◽  
Tohfatul Jinan ◽  
Wahida Binte Naz Aurthy ◽  
Md. Rakib Hossen ◽  
Jahid Ferdous
Keyword(s):  
Monitoring System ◽  
Low Cost ◽  
Sitting Posture ◽  
Posture Monitoring
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