Razvoj algoritmov avtonomnega veslaškega merilnega sistema

PUGELJ, TILEN (author), Geršak, Gregor (mentor)

Cilj tekmovalcev je čim hitreje preveslati razdaljo dva tisočih metrov. V tekmovalnih začetkih so se morali veslači zanašati na povratne informacije, ki so jim jih posredovali njihovi trenerji. Danes je za dosego vrhunskega rezultata potrebno, da veslač spremlja svoje veslanje v vsakem trenutku. To mu omogoči opazovati direktne povezave med načinom treninga in hitrostjo čolna. Veslači med treningom in tekmami najbolj potrebujejo meritve frekvence veslanja, časa, preveslane razdalje in hitrosti. Na trgu že obstaja nekaj naprav, ki jih veslači dnevno uporabljajo, vendar imajo določene pomanjkljivosti ali pa so zelo drage. Cilj naloge je bil poiskati ključne meritve, ki jih veslači potrebujejo, izdelati merilno vezje za zajem meritev, zbrane meritve pa nato uporabiti za razvoj matematičnih algoritmov za zaznavo zaveslaja, merjenje hitrosti in merjenje razdalje. Tako razviti algoritmi so nato dobra osnova za nadaljnji razvoj veslaške merilne naprave. Izdelano vezje in algoritme smo na koncu ovrednotili s primerjavo z referenčno merilno napravo, Nielsen & Kellerman SpeedCoach GPS 2. Ugotovili smo, da merilna napaka frekvence veslanja 1,23 zaveslaja na minuto. Odstopanje je večje od pričakovanega, vendar zadovoljivo, ker je napaka konstantna. Merilna napaka hitrosti je 0,101 m/s, kar je pričakovan rezultat in se ujema z deklarirano merilno napako referenčne naprave. Ugotovitev je potrdil tudi izračun razdalje, ki odstopa za 0,3 %, glede na referenčno napako.

• Language: Slovenian
• Keywords: Veslanje, meritve v veslanju, frekvenca veslanja, hitrost veslanja
• Work type: Master's thesis/paper
• Organization: FE - Faculty of Electrical Engineering
• Year: 2019
• PID: 20.500.12556/RUL-107727
• Publication date in RUL: 17.05.2019

Secondary language

• Language: English
• Title: Development of algorithms for an autonomous rowing measuring system

Abstract

The goal of rowers is to be as fast as possible on a rowing course. In the past rowers had to rely on the feedback provided by the coaches. In order to be competitive today rowers must monitor all aspects of their rowing technique and movements of the boat. The basic measurements are frequency of rowing or stroke rate, time, travelled distance and speed. There are a few measurement devices on the market but they either have some disadvantages, are missing some of the basic measurements or are too expensive. The aim of the project was to define basic measurements needed for rowing, developing a measurement device, capable of capturing needed data and to develop mathematical algorithms to detect stroke rate, measure speed and distance. Developed algorithms could later be used in creating a measurement device that meets all the criteria of needed measurements in rowing and be low-cost. Algorithms were evaluated with the comparison with the reference device, Nielsen & Kellerman SpeedCoach GPS 2. The testing results show that the algorithm for detecting stroke rate produces an average error of 1,23 stroke per minute. Error is bigger than expected, but satisfactory because the error is constant. The speed measurement average error is 0,101 m/s, which is expected result and corresponds to declared measurement error of the reference device. The conclusion was confirmed by the calculation of the distance, which deviates by 0,3 %, relative to the distance measured by the reference device.

• Keywords: Rowing, measurements in rowing, stroke rate, rowing speed