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Uporaba pametnega telefona pri upravljanju avtodoma
ID FINK, ALJAŽ (Author), ID Tomažič, Sašo (Mentor) More about this mentor... This link opens in a new window

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PID: 20.500.12556/rul/cbb432be-3f96-41ef-814e-93830680ee72

Abstract
Namen diplomskega dela je predstavitev delovanja sistema upravljanja ter bodočega posodobljenega sistema za krmiljenje električnih naprav v avtodomu preko pametnega telefona. V podjetju Adria Mobil je aplikacija za upravljanje električnih naprav avtodoma še v razvojni fazi, pri tem pa se raziskuje tudi različne mogoče načine uporabe pametnega telefona. Eden od mogočih načinov uporabe je tudi ta, da izkoristimo senzorje pametnega telefona. V diplomskem delu je predstavljena realizacija prototipnega sistema za avtomatsko izravnavo avtodoma, pri kateri izkoriščamo poslane podatke pospeškometra pametnega telefona. Z vzpostavitvijo brezžične komunikacije pametnega telefona in centralne procesne enote prenašamo podatke naklona avtodoma, ki jih pošilja 3D pospeškometer. Za detekcijo naklona uporabimo samo statično komponento pospeška. Procesna enota podatke obdela in krmili močnostno elektroniko, ki zagotavlja dvosmerno vrtenje enosmernih motorjev z visoko navorno karakteristiko. V prejetih podatkih pospeškometra sta bila zaznana šum in mirovne napetosti pospeškometra. Signale smo povprečili, s čimer smo se znebili šuma pospeškometra ter z offsetnimi napetostmi popravili prisotne mirovne napetosti. Podoben problem je nastopil v tokovni povratni vezavi. Iz analognih izhodov tokovnih senzorjev smo dobivali zelo šumne signale. Sistem je zaradi velike mase v povratnem odzivu na mehansko vzbujanje zelo počasen, zato smo lahko tudi v tem primeru uporabili povprečevalno sito. Zaradi prisotnega šuma tokovnih senzorjev in šuma pospeškometra je prihajalo do napačnih izravnav. Izravnavo z neobdelanimi podatki smo realizirali z najmanjšim odstopanjem 6,12 cm na dolžini dveh metrov. Po obdelavi podatkov smo napako zmanjšali na zgolj 1 cm pri dolžini dveh metrov. Rezultati izravnave so v zadanih mejah (+/- 0,5 cm/m). Zaradi nevarnosti nepravilne postavitve pametnega telefona smo prototip označili kot eksperimentalni in bo služil za demonstracijo izravnave avtodoma na sejmih, saj lahko v primeru nepravilne postavitve pametnega telefona pride do nenadzorovane izravnave avtodoma. Za serijsko proizvodnjo bo potrebna vgradnja integriranega vezja s pospeškometrom na določeno mesto. Pametni telefoni in aplikacije so vse bolj v porastu. Sistem za izravnavo avtodoma bo pripomogel k dodatni prepoznavnosti Adrijinih produktov in bo služil kot atrakcija na sejmih. Pametni telefon bo v prihodnih sistemih za upravljanje naprav mobilnega doma prevzel vlogo alternativnega uporabniškega terminala v povezavi s prenovljeno centralno enoto.

Language:Slovenian
Keywords:Avtodom, pametni telefon, pospeškometer, povprečevalno sito, sistem za uravnavanje in stabilizacijo, tokovni senzor
Work type:Undergraduate thesis
Organization:FE - Faculty of Electrical Engineering
Year:2015
PID:20.500.12556/RUL-30848 This link opens in a new window
Publication date in RUL:01.07.2015
Views:2510
Downloads:438
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Secondary language

Language:English
Title:Smartphone applications for advanced motorhome control
Abstract:
The thesis presents operating the system of steering and future improved system electronic devices in motorhomes through smartphones. Company Adria Mobil still develops the application for steering the system of electronic devices, also at the same time possibilities of using smartphone is still in development. One possible way can be using the sensors of smartphone in presented case. Further is presented the prototype of automatic system for automatic leveling system of motorhome while using sent data from accelerometer of smartphone. By connecting wireless communication of smartphone and central processing unit can be through 3D accelerometer transmitted the slope of the motorhome. Static component of acceleration detects the slope of motor home. The processing unit processes transmitted data and steers power electronics, which provides bi-directional rotation of DC motors with a high torque characteristic. In received data was detected noise and peace voltage of accelerometer. The noise of signals disappeared by averaging and the present peace voltage were corrected by offset voltage. Similar problem appeared in current feedback connection. Analogue exits of current sensors transmitted laud noise signals. Due to the large mass in the return response to mechanical excitation the system is very slow, so it was needed to use the averaging sieve in this case also. Because of present noise current sensors and accelerometer noise, came to the wrong offsets. Leveling with the raw data, we realized with a minimum tolerance 6.12 cm in length of two meters. After data processing error was reduced to only 1 cm in length of two meters. The results of leveling are now set in limits (+/- 0.5 cm / m). Because of the risk of incorrect setting of smart phone prototype was described as experimental, and will serve to demonstrate the leveling motorhome on fairs. Improper setting of smartphone can cause uncontrolled balancing motor home. For serial production will require the installation of an integrated circuit with accelerometer in a fixed position. Smartphones and applications are increasingly on the rise. The system for balancing the motor home will help further the visibility of Adria products and will serve as an attraction at fairs. The smart phone will for future systems steering devices of motor home assume the role of an alternative operator terminal in conjunction with the renewed central unit.

Keywords:Motorhome, smartphone, MEMS accelerometers, averaging filter, motorhome leveling system, current sensor

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