294 research outputs found
Design of Low Cost Greenhouse Monitoring using ZigBee Technology
Greenhouses are often used for growing flowers,
vegetables, fruits, and tobacco plants. Most greenhouse
systems still use the manual system in monitoring the
temperature and humidity in the greenhouse, a lot of
problems can occur not for worker but also affected
production rate because the temperature and humidity of
the greenhouse must be constantly monitored to ensure
optimal conditions. The Wireless Sensor Network (WSN)
can be used to gather the data from point to point to trace
down the local climate parameters in different parts of the
big greenhouse to make the greenhouse automation system
work properly. This paper presents the design of low cost
greenhouse monitoring system to monitor a greenhouse
temperature and humidity parameters by applying the
ZigBee technology as the WSN system. During the design
process, Peripheral Interface Controller (PIC), LCD
Display and Zigbee as the main hardware components is
used as hardware components while C compiler and MP
Lab IDE were used for software elements. The data from
the greenhouse was measured by the sensor then the data
will be displayed on the LCD screen on the receiver which
support up to 100 m range. By using this system, the
process of monitoring is easier and it also cheaper for
installation and maintenance. The feasibility of the
developed node was tested by deploying a simple sensor
network into the Agriculture Department of Melaka
Tengah greenhouse in Malaysia
Development of Greenhouse Monitoring using Wireless Sensor Network through ZigBee Technology
Greenhouses are often used for growing flowers, vegetables, fruits, and tobacco plants. Most
greenhouse systems still use the manual system in monitoring the temperature and humidity in the greenhouse, a
lot of problems can occur not for worker but also affected production rate because the temperature and
humidity of the greenhouse must be constantly monitored to ensure optimal conditions. The Wireless Sensor
Network (WSN) can be used to gather the data from point to point to trace down the local climate parameters in
different parts of the big greenhouse to make the greenhouse automation system work properly. This paper
presents the design of low cost greenhouse monitoring system to monitor a greenhouse temperature and
humidity parameters by applying the ZigBee technology as the WSN system. During the design process,
Peripheral Interface Controller (PIC), LCD Display and Zigbee as the main hardware components is used as
hardware components while C compiler and MP Lab IDE were used for software elements. The data from the
greenhouse was measured by the sensor then the data will be displayed on the LCD screen on the receiver
which support up to 100 m range. By using this system, the process of monitoring is easier and it also cheaper
for installation and maintenance. The feasibility of the developed node was tested by deploying a simple sensor
network into the Agriculture Department of Melaka Tengah greenhouse in Malaysia
Real Time Gas Monitoring System Using Wireless Sensor Network
Miner’s safety is the main issue in the present era. Miner’s health is affected by many means which includes unstable and cumbersome underground activities and awkward loads, heavy tools and equipment, exposure to toxic dust and chemicals, gas or dust explosions, improper use of explosives, gas intoxications, collapsing of mine structures, electrical burn, fires, flooding, rock falls from roofs and side walls workers stumbling/slipping/falling, or errors from malfunctioning or improperly used mining equipment. In earlier days for detection of gases canary and small animals are used but they didn’t provide the exact condition of the mines so safety in the mine in not guaranteed. Hence, there is a need of monitoring system which utilised the ZigBee wireless sensor network technology. There are two units of the monitoring system Sensor unit and Monitoring unit. Sensor unit will be placed in the underground section and Monitoring unit will be placed in the above the mines from where monitoring is done. Firstly, the Sensor unit is placed in the underground section of the mine. Where input is taken from the sensors in terms of Methane (CH4) i.e. MQ-2 sensor, Hydrogen Sulphide (H2S) i.e. MQ-136 sensor, and Natural Gases i.e. MQ-5 sensor. Then they are compared with their threshold value by the Microcontroller Module and if the value is above the threshold value, the Buzzer starts ringing meanwhile data is displayed in the Display module and sent to the Wireless Communication Module of the Monitor unit i.e. ends device or coordinator through the Wireless Communication Module of the Sensor unit i.e. router. In this way, the study can help the miners get relief from any casualty and ultimately save their lives. The device encompasses a large range of networking. The data can also be stored for future investigation. The device is also durable and costs effective with a price of approx. Rs. 6,500 to 7,000/-
Determination of Optimal Power for ZigBee-based Wireless Sensor Networks
In designing WSNs, both the transmit power, network topology, and routing scheme are considered. Transmitting at lower power affect the connectivity of the network while transmitting at excessive power reduces the lifetime of nodes and increases the network interference. Thus, determining the optimal power of the nodes that will be necessary to guarantee network connectivity. In this work, a practical self-healing and self-configuring real life prototype ZigBee Wireless Mesh Sensor Networks (WMSNs) was design to evaluate the performance of IEEE 802.15.4/ZigBee. We showed that increasing the transmit power of nodes from -6dBm to 0dBm in WMSNs leads to improved packets delivery ratio and throughput improvement and the optimal power was -2dBm for the studied topology. The testbed will aid wireless sensor network designer to make an accurate decision on transmit power and mesh network topology using Ad-hoc on-demand distance vector algorithm (AODV) as the routing scheme
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