Ukuqaliswa kohlelo lokugcina izimoto olususelwa ku-OBD ne-GPS

Njengoba ukuphepha kwethrafikhi, isiminyaminya nezinye izindaba zikhathazeka kakhulu, uhlelo lokugcina izimoto olususelwa ku-OBD ne-GPS lwakhiwe. Uhlelo lwakhiwe kusuka ezicini ezimbili, eyodwa

Based on the OBD interface to collect real-time data of the vehicle during driving, the acquisition circuit is designed to connect with the OBD system of the car by using the EST527-minis car networking OBD module to read the real-time operating parameters of the car while driving, so that the car owner can pass this system More intuitively understand the real-time parameters of the vehicle, and have a more comprehensive understanding of the vehicle condition, thereby reducing potential safety hazards. The second is to realize the accurate positioning of the vehicle through the GPS module on the basis of obtaining the information of the vehicle, and use the DSRC technology to realize the real-time interaction of various information between the vehicles to ensure that the vehicle is in a safe driving state. By mounting the system on a real vehicle, testing the functions of each part of the entire terminal device, the expected goal was achieved.

GM-200

Ngenxa yokukhula okusheshayo kobunikazi bezimoto, uchungechunge lwezinkinga zomgwaqo ezibangelwe yilokhu seludonse ukunakwa okuningi, njengokuphepha, ukuvikelwa kwemvelo, nokuminyana komgwaqo.

Linda. Ngokombono wokuphepha kokushayela, kubaluleke kakhulu ukugcina ibanga phakathi kwezimoto nokushayela ngokucophelela. Ukwazi ibanga phakathi kwezimoto kungazixazulula ngempumelelo izinkinga ezinjalo. Ekulinganiseni ibanga phakathi kwezimoto, ubuchwepheshe be-ultrasonic measurement technology buyindlela esetshenziswa kakhulu yokulinganisa ibanga, kepha izimo zayo zemvelo zokulinganisa ibanga ziphakeme kakhulu futhi nokunemba akwanele. I-Lidar okwamanje iyindlela ehamba phambili eguquguqukayo. Isetshenziswa kakhulu ekuhlolweni nasekucwaningweni okuphezulu kwesayensi kanye nezimoto ezifana nezimoto ezingenamuntu. Kuyabiza. I-Civil Lidar isetshenziselwa kakhulu ukuguqula ukukalwa kwebanga ngaphakathi kwe-3m. Lezi zinhlobo ezimbili zezinhlelo zokugcina ibanga zidinga indawo yokusebenza ephezulu nezindleko ezinkulu, futhi azikwazi ukuhlangabezana nezidingo zohlelo lokukhumbuza ibanga lokuphepha ezimotweni ezijwayelekile zomphakathi.

Njengamanje, uhlelo lokufaka i-GPS lokuhamba ngemoto lusetshenziswa kabanzi ngenxa yezinzuzo zokubeka kahle indawo, izindleko eziphansi, nokusetshenziswa okulula. Ukukala ibanga phakathi kwezimoto nge-GPS sekuyinto

Ngeqiniso. I-DSRC Internet of Vehicles technology technology isetshenziswe ngokuqhubekayo emkhakheni wezokuthutha okukhaliphile eminyakeni yamuva nje, futhi ingasungulwa ngempumelelo phakathi kwezimoto ezinejubane.

Ngasikhathi sinye, abashayeli futhi banentshisekelo yokwazi imininingwane ethile ngenkathi kuqhutshwa imoto yabo, ukuze babone ukuphathwa okusebenzayo kwemoto. Ukukhuthazwa kobuchwepheshe be-OBD-II kwenza kube lula kubantu ukuthola le datha. Ukuthuthuka okuqhubekayo kwe-Intanethi yezobuchwepheshe bezimoto kunikeza inkundla yokuhlanganiswa kwamamojula ahlukahlukene.

This system makes full use of the multi-mode fusion characteristics of the Internet of Vehicles platform, and designs a vehicle terminal system based on OBD and GPS. The system uses the comprehensive and fast characteristics of OBD to collect vehicle data, GPS technology positioning and ranging functions, and DSRC technology transmission The real-time nature of the data collects vehicle information and surrounding road information, filters, calculates, and distributes it through the processor to realize the information interaction between vehicles and roads. This article uses data splicing technology to effectively solve the fragmentation problem in the process of data collection and distribution, to ensure the correctness of data transmission, and to avoid the disadvantages of expensive distance measuring devices and high requirements for distance measuring conditions in the prior art, making vehicles in complex situations Accurate data information can still be obtained by downloading, which greatly improves the driving safety of the vehicle, and realizes that the various data of the car when the car is driving can be presented to the user in a simple and intuitive manner, which is convenient for the user to use.

200

1 Uhlelo lwesikimu jikelele

Ngemuva kokuhlaziywa kwesidingo okuphelele kohlelo, uhlaka lonke lohlelo lwakhiwe, njengoba kukhonjisiwe kuMdwebo 1. Uhlelo luhlukaniswe izingxenye ezintathu: isoftware nehadiwe, eyokuqala

Ingxenye yayo ukuklama imodyuli yokuqoqa yohlelo lwe-OBD lwemoto, lapho kukhishwa khona imininingwane yesikhathi sangempela ngenkathi kuqhutshwa imoto; ingxenye yesibili iyisimo esisebenzisa idatha ye-GPS ukufeza ukuxhumana kolwazi nge-DSRC; ingxenye yesithathu isuselwa kwimininingwane eqoqiwe Idatha yakhelwe ngokubonakalayo, kufaka phakathi ama-LED kanye namadivayisi eselula, ukuze abasebenzisi bakwazi ukwenza ukulungisa okuhambisanayo nesimo sokushayela semoto.

1. 1 Uhlelo lwesakhiwo jikelele

Lolu hlelo lususelwa ekwakhiweni kwe-on-board OBD ne-GPS on-board terminal system. Uhlelo olufakwe emotweni luthola imininingwane yokushayela yesikhathi sangempela semoto nolwazi lwesimo samanye amamojula wemoto, kanye nemininingwane yedatha yemojuli yokubeka i-GPS, futhi yabelana ngemininingwane nezinye izimoto ngokusebenzisa ukuxhumana kwezokuxhumana kwezimoto ze-DSRC imodyuli. impande

Bala ibanga eliphephile phakathi kwezimoto ezimbili ngokuya ngejubane lemoto kanye nejubane lemoto ekhonjiwe. Ngasikhathi sinye, bala ibanga langempela phakathi kwezimoto zombili ngemininingwane ye-GPS, ubonise imininingwane yebanga etholakele esikrinini se-LED, bese wahlulela ukuthi ngabe ibanga langempela lelo Uma lingaphansi kwebanga lezokuphepha, umshayeli uzoxwayiswa. Imodyuli yokuxhumana ye-Bluetooth isetshenziswa njengendawo yokudlulisa imininingwane phakathi kwe-terminal yemoto nedivayisi ephathekayo, futhi amasekethe ahlukanisiwe namamojula asebenzayo aklanyelwe.

DF

1.2 Uhlelo lokuqanjwa kwengxenye yokutholwa kwedatha ye-OBD

Uhlelo lwe-OBD lwazalwa ekuqaleni ukukhawulela ukukhishwa kwemoto. Ngokuthuthukiswa kobuchwepheshe, imoto esetshenziswa kakhulu

The diagnosis system is OBD-Ⅱ, and the most advanced OBD-Ⅲ has been able to enter the system ECU (computer) to read the fault code and related data, and use the small on-board communication system to convert the vehicle’s identity code, fault code and location Such information is automatically notified to the management department. Considering the current diagnostic interface chips on the market and comparing with other chips, we finally chose Est527_minis as the core of the hardware circuit design. At the same time, EST527 covers all mainstream automobile agreements and has strong applicability. Most models on the market can be used. The collected information is displayed on the LED display. Here, the HC-06 Bluetooth module is used as the transmission medium with the mobile device, and the communication distance is about 10m.

Ilogo yemoto ye-OBD1.3 Ingxenye yohlelo lokuklanywa kwesilinganiso sebanga lokushayela

Njengoba kukhonjisiwe kuMdwebo 4, le ngxenye ithola imininingwane yokubeka GPS yemoto ngemodyuli yokubeka i-GPS [14], futhi ithola olunye ulwazi ngosizo lwemodyuli yokuxhumana yezimoto ye-DSRC.

Imininingwane yokubeka imoto ibalwa futhi ibanga phakathi kwalezi zimoto ezimbili liyakhonjiswa kusibonisi se-LED noma kudivayisi ephathekayo. Lapho ibanga lingaphansi kwebanga elibekiwe eliphephile, imodyuli ye-alamu yomsindo nokukhanya izokwazisa umshayeli. Isilawuli esiyinhloko se-ARM ohlelweni sisebenzisa i-chip ye-STM32F105RBT6, i-DSRC module yokuxhumana yenethiwekhi isebenzisa ingxenye ye-MK5OBU-DSRC, imodyuli yokubeka i-GPS isebenzisa ingxenye ye-MK5OBU-GPS, isibonisi se-LED sisebenzisa imoto eyi-14 inch display, umsindo ukukhanya alamu module isebenzisa ukudlala audio.

1.4 Idizayini yengxenye yeSoftware

Le ngxenye ithuthukisa idivayisi yeselula i-AP [15] yesikhulumi se-Android, igxile ekwahlukanisweni kwemisebenzi yemodyuli, yakhe uhlaka lwesoftware ecacile

Imodyuli yokwakhiwa kwesoftware ihlukaniswe kakhulu izingxenye ezi-5: imodyuli ekhombisa ideshibhodi yemininingwane yejubane lemoto, imojula yokubonisa uhlu yemininingwane ephelele yemoto, imodyuli yesevisi yemephu, kanye nemodyuli ye-Bluetooth yokwamukela imininingwane nemodyuli yokuhambisa yokubonisa imininingwane eyisisekelo. Ngemuva kokuhlanganisa ingxenye ngayinye yokwakhiwa kwemodyuli, uhlelo lokugcina lwezimoto lwakhiwe

2 System test

2.1 Imvelo yokuhlola

Isimo sokuhlola esiyisisekelo sohlelo sikhonjiswa kuThebula 1, bese kuthi umsebenzi wokulungiselela ngaphambi kokuhlola amamojula ahambisanayo: faka i-terminal ebhodini kulezi zimoto ezimbili kanye

Xhuma nge-interface ye-OBD-Ⅱ, uhlole ukunikezwa kwamandla kwemodyuli ngayinye, bese ngasikhathi sinye udlulise imininingwane ye-smart phone ku-terminal yemoto nge-Bluetooth emgwaqweni oqondile ongaba yi-1km ubude, futhi lezi zimoto zombili zizoqala ngokulandelana ukubheka izimo zokusebenza zemodyuli ngayinye yohlelo ngenkathi ushayela. Yenza izivivinyo ukuqinisekisa ukuzinza, ukusebenza kanye nokunemba kohlelo.

2.2 Imiphumela yokuhlolwa

Lolu hlelo lukhetha imoto yangempela ukuhlola uhlelo. Imiphumela yokuhlolwa ikhombisa ukuthi i-terminal efakwe emotweni ingahlanganisa amamojula ahlukahlukene futhi ibone kahle imisebenzi elindelwe yokwakhiwa.

1) Ngokuya ngokuqoqwa kwedatha, zombili lezi zimoto zingabuka ngokunembile imininingwane yesikhathi sangempela yokushayela imoto kusibonisi se-LED nakumadivayisi eselula, enembile futhi elula njengoba kukhonjisiwe kumfanekiso

7 kukhonjisiwe.

2) Ngokuya ngesilinganiso sebanga lokushayela, ukuze uqinisekise ukunemba kwebanga elilinganisiwe, lapho imoto iqala futhi ime, ibanga eliphakathi kwalezi zimoto ezimbili lilinganiswa ngenduku yemitha.

Ukuze uqhathanise nedatha elinganiswa nge-GPS. Ihlukaniswe kakhulu ngamaqembu amabili okuhlola: 1) Imoto engaphambili imile, kanti imoto engemuva iqala ukusondela emotweni ngaphambili ngaphakathi kwe-100m bese ima ngemuva kokufinyelela ibanga elithile; 2) Izimoto ezimbili ziqala cishe ngasikhathi sinye bese ziyama ngemuva kokushayela isikhathi esithile.

Ngesikhathi sokuhlolwa okubili, uhlelo lusebenzise imojuli esukela ku-GPS ukuqopha ngokuhlukile ubudlelwano phakathi kwebanga eliphakathi kwalezi zimoto nesikhathi nesikhathi. Ngemuva kwezilinganiso eziningi namanani aphakathi nendawo, kutholakale ukuthi iphutha eliphakathi kwe-GPS nebanga langempela laliphakathi kuka-0.5 m. Lapho ibanga lemoto lingaphansi kuka-2m, iphutha lizokwanda. Kukhombisa ukuthi lolu hlelo ngokuyisisekelo lungathola imininingwane yebanga phakathi kwezimoto ngokunembile futhi ngokushesha ngokusebenzisa uhlelo lokubeka i-GPS, futhi lungaxhumana nolwazi lwesikhundla phakathi kwalezi zimoto ngesikhathi sangempela nge-DSRC, ukuze kukhunjulwe ukuma kwezimoto okuhlobene .

T7

3 Isiphetho

Roadragon has designed an on-vehicle terminal system for the Internet of Vehicles based on OBD and GPS. The terminal system mainly includes two parts. The first part is the vehicle real-time data acquisition module, and the second part is the calculation and warning of the safety distance between vehicles through DSRC and GPS. Features. The actual vehicle test results show that the various modules of the vehicle terminal system work normally, are reliable and practical, and can be used by most models on the market. While ensuring safe driving, the driver can also obtain real-time driving information of the vehicle and part of the information of the vehicle that is also equipped with the device, so that the owner can have a more comprehensive understanding of the car’s situation and travel more comfortably. Because the system is connected to the Internet of Vehicles platform, when the number of vehicles is large, it has high application value in vehicle driving behavior analysis, fleet management, and environmentally friendly driving based on vehicle big data.

I-G-M200-2

 


Isikhathi Iposi: Sep-18-2020