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Remote measurement station
2004 (English)Independent thesis Advanced level (professional degree), 20 credits / 30 HE creditsStudent thesis
Abstract [en]

This Master thesis is related to field and environmental research. In these types of research, sampling of data has often to be done in the field. The collection of data is an important part of the whole research process. However, it does unfortunately implicate a difficulty due to the inherent characteristic of open field signals: the sampling of signals. In many cases, the sampling sites are often difficult to access and long distances must be covered to reach the sampling sites. The main aim of this project concerns improvements of the link between the environment and the researcher. Traditionally, the researcher has to go to each measurement location, collect data, check it and bring it back to the working place. The sampling then requires much time and effort and it is impossible to work with data in real time. In this project we have the intention to simplify the sampling and collection of data by doing it easier and faster. The proposed solution consists of small measurement stations, easily carried and based on a microcontroller, capable of accessing wirelessly to the researcher by using technology from the field of modern telecommunications. This makes it possible to reduce or minimize the travelling to sampling sites and all sampling, transport and analysis of data can be made in real time. The proposed stations should be designed to act as a general-purpose system so the station has to be open to a large family of sensors and must be capable to process different kinds of input signals. The proposed solution has been used in a research project carried out by the SLU (Swedish University of Agricultural Sciences), Umeå, concerning the migrations of salmon and trout in rivers. In the project, researchers from SLU equipped some fishes with a small radio-transmitter that emits a unique frequency that identifies each fish. Earlier in the project, they installed a radio-receiver with an antenna mounted on a car or in a small aeroplane and periodically tracked the signals from the transmitters, following the course of the river. Each time a fish was detected the fish’s position and frequency was noted. This year the project continued but in other way. In collaboration with the EISLAB, Luleå University of Technology, the researchers in the fish migration project has decided to put several new stations all along the river and wait for the fish to be detected when they appear in the proximity of the station. The sensor used in the new station is the same radio-receiver that it was used in the previous study. The main element of the new station is the microcontroller that co-operates with the receiver and a GPS/GSM module. Once a fish is detected, the microcontroller recognise it and records the time, the date and the position supplied by the GPS. The communication with the researcher is done by GSM phone module that sends the recorded data as an SMS to a mobile phone.

Place, publisher, year, edition, pages
Keyword [en]
Technology, Remote Measurment Station
Keyword [sv]
URN: urn:nbn:se:ltu:diva-47013ISRN: LTU-EX--04/034--SELocal ID: 49a75f10-b4e6-47af-843f-15f1c5eb2ec7OAI: diva2:1020329
Subject / course
Student thesis, at least 30 credits
Educational program
Computer Science and Engineering, master's level
Validerat; 20101217 (root)Available from: 2016-10-04 Created: 2016-10-04Bibliographically approved

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