Hochul Lee

Design and Implementation of Wireless Sensor Networks Based Paprika Green House System

This research paper suggests the ‘Paprika green house system’ (PGHS), which collects paprika growth information and greenhouse information to control the paprika growth at optimum condition. The temperature variation range of domestic paprika cultivation facilities are relatively quite big and the facility internal is kept at relatively dry condition. In addition, the concentration of CO2 is not uniform, giving bad impact on the growth of paprika. In order to cope with these issues, the ‘Paprika green house system’ (PGHS) based on wireless technology was designed and implemented for the paprika cultivating farmers. The system provides with the ‘growth environment monitoring service’, which is monitoring the paprika growth environment data using sensors measuring temperature, humidity, illuminance, leaf wetness and fruit condition, the ‘artificial light-source control service’, which is installed to improve the energy efficiency inside greenhouse, and ‘growth environment control service’, controlling the greenhouse by analyzing and processing of collected data.

Design and implimentation of pig farm monitoring system for ubiquitous agriculture

The ubiquitous pig farm monitoring system is designed so that it can be applied to modern agriculture, which is becoming bigger and more advanced. In the immediate previous research, a large scale ubiquitous pig farm monitoring system was designed and it was applied to actual pig farms. It was possible to realize the system, where the raising efficiency of pig was maximized by installing the temperature/humidity sensors and video camera, transmitting the measured information to caretaker in real time. When the measured environmental information values detected by the sensor would get out of optimum raising environment of pigs, the system transmitted the content to the caretaker. Simultaneously, the environment control facilities such as humidifier, air conditioner and window opener/closer were activated in order to maintain the environmental information at uniform and pleasant values.

A Study of Energy Efficient MAC Based on Contextual Information for Ubiquitous Agriculture

In the agricultural field, various technologies are being used. Especially, a sensor network related technology is being applied as a technology that has been receiving much attention in recent. The efficiency of MAC protocol of WSN (Wireless Sensor Network) is being studied in various aspects, and the studies on the method of applying such MAC protocol in the agricultural field are also needed. In this thesis, a situation information based MAC protocol that can be applied in the agricultural field is proposed. The proposed protocol determines transmission by analyzing the given situation unlike the existing MAC protocol. It determines the data availability of unchanged situation or that of insignificant range with no influence, and it allows the transmission of any changed volume upon comparing with the existing transmission data only in the case when the critical value mutually set with the serve is surpassed. It increases the energy efficiency through the method of decreasing the data size by delivering only the changed volume than the entire data and decreasing the transmission frequency by transmitting data only in the case when the critical value has been surpassed. To analyze the performance of the proposed protocol, a simulation was conducted based on the data measured in greenhouse.

Energy-Efficient MAC Protocol for U-Agriculture Based on Link Quality

The sensor network application in the agricultural growth monitoring field is being tried by various methods. The biggest characteristics of the growth monitoring are that its data sensing cycle is very long, and if it is installed once, its position change almost doesn‘t occur, and it should be operated for a long period. Accordingly, the MAC Protocol satisfying these properties is necessary. The proposed MAC Protocol writes a node list of a transmission range, and uses minimum transmit power measured in case of transmit/receive by measuring minimum transmit power that can transmit/receive according to each node in the synchronization process. This research compares energy consumption of MAC and SMAC & PSMAC with network viability proposed through mathematical analysis and simulation experiments.

A Study on Energy Efficient MAC Protocol of Wireless Sensor Network for Ubiquitous Agriculture

Various technologies are used in the agricultural sites now. Especially, the recent application of sensor network related technology is quite notable. Considering the efficiency of MAC protocol of WSN is being researched in various aspects, it is believed that a research on how to apply the MAC protocol to agriculture would be also required. This research is based on the sensor node developed by Sunchon University ITRC. Once the sensor nodes are effectively located in the farm, they operate for a long time and they are rarely relocated once installed. The concentration of multiple sensor nodes in a narrow area is another characteristic the sensor node. The purpose of this research is to select a sensor network MAC protocol, which would be most proper to agricultural site with good energy efficiency and excellent transmission delay performance. The applicable protocols such as S-MAC and X-MAC were set up for the installation environment. They were compared and a methodology to select the most optimum protocol to agricultural site is suggested.

A power control scheme for an energy-efficient MAC protocol

Sensor networks applications in the growth monitoring fields of a farming have been attempted in a variety of methods. The most significant characteristic of the growth monitoring is that its detecting period for data is very long, its installation location is not almost changed after once installing, and it should be operating for a long time. Therefore, MAC protocol to satisfy these characteristics is required. Proposed MAC protocol makes the node list for the range of enabling to transmit, measures the minimum transmitting power to be able to transceive for each node during synchronizing process, and uses the minimum transmitting power measured when transceiving data. The energy consumption ratio and the network survival rate for SMAC (Sensor MAC) and PSMAC (transmission Power control in SMAC) are compared through the mathematical analysis and the simulation.

A Study on the Implementation of Pigpen Management System Using Wireless Sensor Networks

The wireless sensor networks (WSN) technology based on low power consumption is one of the important technologies in the realization of ubiquitous society. When the technology would be applied to the agricultural field, it can give big change in the existing agricultural environment such as livestock growth environment, cultivation and harvest of agricultural crops. This research paper proposes the ‘Pigpen Management System’ using WSN technology, which will establish the ubiquitous agricultural environment and improve the productivity of pig-raising farmers. The proposed system has WSN environmental sensors and CCTV at inside/outside of pigpen. These devices collect the growth-environment related information of pigs, such as luminosity, temperature, humidity and CO2 status. The system collects and monitors the environmental information and video information of pigpen. In addition to the remote-control and monitoring of the pigpen facilities, this system realizes the most optimum pig-raising environment based on the growth environmental data accumulated for a long time.

A Study of the Energy Efficient MAC Protocol Apply to Ubiquitous Livestock Farming

The ubiquitous pig farm monitoring system is designed so that it can be applied to modern agriculture and attached MAC Protocol that the Link Quality based Transmit Power Control MAC(LPMAC) protocol, which is becoming bigger and more advanced. In the immediate previous research, a large scale ubiquitous pig farm monitoring system was designed and it was applied to actual pig farms. It was possible to realize the system, where the raising efficiency of pig was maximized by installing the temperature/humidity sensors and video camera, transmitting the measured information to caretaker in real time. When the measured environmental information values detected by the sensor would get out of optimum raising environment of pigs, the system transmitted the content to the caretaker. Simultaneously, the environment control facilities such as humidifier, air conditioner and window opener/closer were activated in order to maintain the environmental information at uniform and pleasant values. And, it was found that the LPMAC protocol is proper as the MAC to be applied to the livestock farming.

Implementation of a Samsulnori Ensemble System using a Touch Interface

Recently, as the scale of the cultural content business market is being growed, it required that we should introduce the Korean music culture which is unique and competitive cultural contents to the worldwide. This paper proposes a Samulnori Ensemble System (SES), using a touch interface which plays the Korean traditional musical instruments. A SES consists of the Control Device which supports touch functions, the Performance Manager that detects signals from the Control Device and plays a melody, and the Communication Manager making a ensemble among the possible devices. Also, using the Network Time Protocol which is part of Synchronization Manager can be paly different speed communication environments. We utilized multi-touch functions to operate the system. We also implemented multi-touch interface and multi-play with other player for fun and interesting who are not interested Samulnori.

Implementation of Wireless Sensor Networks Based Pig Farm Integrated Management System in Ubiquitous Agricultural Environments

The wireless sensor networks (WSN) technology based on low power consumption is one of the important technologies in the realization of ubiquitous society. When the technology would be applied to the agricultural field, it can give big change in the existing agricultural environment such as livestock growth environment, cultivation and harvest of agricultural crops. This research paper proposes the ‘Pig Farm Integrated Management System’ based on WSN technology, which will establish the ubiquitous agricultural environment and improve the productivity of pig-raising farmers. The proposed system has WSN environmental sensors and CCTV at inside/outside of pig farm. These devices collect the growth-environment related information of pigs, such as luminosity, temperature, humidity and CO2 status. The system collects and monitors the environmental information and video information of pig farm. In addition to the remote-control and monitoring of the pig farm facilities, this system realizes the most optimum pig-raising environment based on the growth environmental data accumulated for a long time.