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Author: | Palttala, Juhani |
Title: | Laite dynaamisen voima-anturin liittämiseksi tietokoneeseen |
A device for connecting a dynamic force sensor to a computer | |
Publication type: | Master's thesis |
Publication year: | 2010 |
Pages: | [8] + 58 Language: fin |
Department/School: | Elektroniikan laitos |
Main subject: | Sovellettu elektroniikka (S-66) |
Supervisor: | Eskelinen, Pekka |
Instructor: | Leppäkorpi, Lasse |
Electronic version URL: | http://urn.fi/URN:NBN:fi:aalto-201203131523 |
OEVS: | Electronic archive copy is available via Aalto Thesis Database.
Instructions Reading digital theses in the closed network of the Aalto University Harald Herlin Learning CentreIn the closed network of Learning Centre you can read digital and digitized theses not available in the open network. The Learning Centre contact details and opening hours: https://learningcentre.aalto.fi/en/harald-herlin-learning-centre/ You can read theses on the Learning Centre customer computers, which are available on all floors.
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Location: | P1 Ark Aalto 1267 | Archive |
Keywords: | dynamic force sensor ballistocardiography bed monitoring data aquisition dynaaminen voima-anturi ballistokardiografia vuodemonitorointi datankeruu |
Abstract (eng): | As the percentage of old people in Finland grows due to the retiring of "large age groups", an increasing amount of labour is required in the field of geriatrics. One solution to ease the work of the nurses could be utilizing contactles vital function monitoring. This can be implemented in several ways including acceleration sensors, force sensors and even radar. In this paper, a small self-contained ballistocardiographic (BCG) system with onboard force sensor, analog-to-digital converter (ADC) and USB connection is presented. The objective was to design a device that can be installed inside different enclosures to reliably measure the vital functions of a person in different situations. The primary goal was a sensor plate that can be placed under the mattress in a hospital bed. A secondary goal was a small aluminium sensor box to be placed under a chair leg to demonstrate the technology in office surroundings. The design target were met commendably. Using the device, the vital functions of the person in a bed or a chair can be monitored without the need of connecting any wires or other systems to the person. The noise level is small enough to allow measuring of even the weakest heart beast. As the importance of different features was unclear prior to beginning of this study, the device was designed with ability to evaluate several different features. However, after building prototypes and testing them in real condition, some of the features were found to be useless. Thus, in the future development the device can be designed less complex and more affordable by omitting unnecessary circuitry. |
Abstract (fin): | Väestön ikääntyessä vanhustenhoito vaatii lisää työvoimaa. Työtä voidaisiin mahdollisesti helpottaa automatisoimalla joitain rutiininomaiseen terveydentilan valvontaan liittyviä asioita. Yksi mahdollisuus on henkilön tilan tarkkailu ballistokardiografian menetelmin. Tässä työssä suunniteltiin ja toteutettiin yksinkertainen pietsosähköiseen voima-anturiin perustuva laite, joka kytketään tietokoneeseen USB-liitännän kautta ja jonka avulla voidaan vuoteessa olevan henkilön elintoimintoja seurata edullisesti ja ilman tarvetta kiinnittää ihmiseen minkäänlaisia johtoja tai antureita. Laite täyttää tavoitteet hyvin. Se on mittausten perusteella vähäkohinainen ja siten heikkojenkin elintoimintoihin liittyvien voimien mittaaminen on mahdollista. Laitetta suunniteltaessa oli vain alustava käsitys eri ominaisuuksien todellisesta tarpeesta, joten se suunniteltiin siten, että useita eri ominaisuuksia voitaisiin kokeilla. Koekäytön perusteella osa ominaisuuksista on tarpeettomia, joten seuraavassa versiossa monimutkaisuutta ja kustannuksia voidaan vähentää jättämällä ne pois. |
ED: | 2010-08-20 |
INSSI record number: 40211
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