Implementasi sistem terminal kendharaan adhedhasar OBD lan GPS

Amarga keamanan lalu lintas, kemacetan lan masalah liyane kuwatir, sistem terminal kendharaan adhedhasar OBD lan GPS dirancang. Sistem kasebut dirancang saka rong aspek, siji yaiku

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

Amarga tuwuhing kepemilikan mobil kanthi cepet, serangkaian masalah lalu lintas sing disebabake amarga iki saya akeh manungsa waé, kayata keamanan, perlindungan lingkungan, lan kemacetan ing dalan.

Ngenteni. Saka perspektif keamanan nyopir, penting banget kanggo njaga jarak antarane kendaraan lan drive kanthi tliti. Ngerti jarak antarane kendaraan kanthi efektif bisa ngatasi masalah kasebut. Nalika ngukur jarak ing antarane kendaraan, teknologi pangukuran jarak ultrasonik minangka metode pangukuran jarak sing umum digunakake, nanging kahanan lingkungan pangukuran jarak kasebut cukup dhuwur lan akurasi ora cukup. Lidar saiki dadi metode canggih dinamis. Umume digunakake ing eksperimen lan tes riset ilmiah mewah kayata kendaraan tanpa kendaraan. Regane larang. Lidar Sipil biasane digunakake kanggo ngukur jarak ing 3m. Rong jinis sistem pangopènan jarak kasebut mbutuhake lingkungan operasi sing larang lan larang regane, lan ora bisa nyukupi sarat sistem pangeling jarak adoh kanggo kendaraan umum.

Saiki, sistem navigasi GPS sing dipasang ing kendaraan digunakake banget amarga kaluwihane akurasi posisi sing dhuwur, biaya murah, lan panggunaan sing trep. Ngukur jarak antarane kendaraan liwat GPS wis dadi

Kanggo kasunyatan. Teknologi komunikasi Internet Kendaraan DSRC wis ditrapake terus-terusan ing bidang transportasi cerdas ing taun-taun pungkasan, lan bisa digawe kanthi efektif ing antarane kendharaan kecepatan tinggi.

Sanalika, driver uga kepengin ngerti sawetara data sajrone proses nyopir mobil, supaya bisa ngerteni kendharaan sing luwih proaktif. Promosi teknologi OBD-II ndadekake luwih gampang wong entuk data kasebut. Pangembangan teknologi Internet Kendaraan sing terus-terusan nyedhiyakake platform kanggo integrasi macem-macem modul.

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 Desain skema umum sistem

Sawise analisis panjaluk sistem sing komprehensif, kerangka sistem sakabehe dirancang, kaya sing ditampilake ing Gambar 1. Sistem kasebut dipérang dadi telung bagean: piranti lunak lan perangkat keras, sing pisanan

Bagéan yaiku ngrancang modul koleksi kanggo sistem OBD ing papan mobil, sing liwat informasi real-time sajrone proses nyopir kendharaan diekstrak; pérangan nomer loro yaiku modul sing nggunakake data GPS kanggo nggayuh interaksi informasi liwat DSRC; pérangan katelu adhedhasar data sing diklumpukake. Data dirancang kanthi visual, kalebu LED lan piranti seluler, saengga pangguna bisa nggawe pangaturan sing cocog karo kahanan kendharaan kendharaan.

1. 1 Struktur sakabèhé sistem

Sistem iki adhedhasar desain OBD ing papan lan sistem terminal GPS. Sistem sing dipasang ing kendaraan entuk data nyopir wektu nyata kendharaan lan informasi status sawetara modul kendaraan, uga informasi data modul posisi GPS, lan nuduhake data karo kendaraan liyane liwat komunikasi jaringan kendaraan DSRC modul oyot

Ngetung jarak sing aman ing antarane kaloro kendaraan kasebut adhedhasar kecepetan kendaraan lan kacepetan target kendaraan. Ing wektu sing padha, ngitung jarak nyata ing antarane rong kendaraan liwat informasi GPS, nampilake informasi jarak sing dipikolehi ing layar LED, lan pilih manawa jarak asline yaiku Yen kurang saka jarak keamanan, driver bakal dielingake. Modul komunikasi Bluetooth digunakake minangka medium transmisi informasi ing antarane terminal kendharaan lan piranti seluler, lan sirkuit lan modul fungsional sing beda-beda dirancang.

DF

1.2 Skema desain bagean akuisisi data OBD

Sistem OBD asale lair kanggo matesi emisi knalpot mobil. Kanthi pangembangan teknologi, kendaraan sing paling akeh digunakake

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.

Logo mobil OBD1.3 Bagéan saka rencana desain kanggo ngukur jarak nyopir

Kaya sing dituduhake ing Gambar 4, bagean iki entuk informasi posisi GPS ing kendaraan liwat modul posisi GPS [14], lan entuk informasi liyane kanthi bantuan modul komunikasi jaringan kendaraan DSRC.

Informasi posisi kendaraan diitung lan jarak ing antarane rong kendaraan ditampilake ing layar LED utawa piranti seluler. Yen jarake kurang saka jarak sing aman sing disetel, modul alarm swara lan lampu bakal menehi tandha drivere. Kontroler inti ARM ing sistem nggunakake chip STM32F105RBT6, modul komunikasi jaringan kendaraan DSRC nggunakake komponen MK5OBU-DSRC, modul posisi GPS nggunakake komponen MK5OBU-GPS, tampilan LED nggunakake tampilan mobil 14 inci, lan swara lan modul alarm cahya nggunakake puter maneh audio.

1.4 Desain bagean piranti lunak

Bagean iki nggawe AP seluler piranti [15] kanggo platform Android, fokus ing pembagian fungsi modul, nggawe kerangka perangkat lunak sing jelas

Modul desain piranti lunak biasane dipérang dadi 5 bagean: modul tampilan dashboard kanggo informasi kacepetan mobil, modul tampilan dhaptar kanggo informasi kendaraan umume, modul layanan peta, lan modul Bluetooth kanggo nampa informasi lan modul geser kanggo nampilake informasi dhasar. Sawise nggabungake saben bagean desain modul, sistem terminal kendaraan pungkasan dirancang

2 System test

2.1 Lingkungan uji coba

Lingkungan tes dhasar sistem ditampilake ing Tabel 1, lan banjur nyiapake sadurunge nyoba modul sing cocog: nginstal terminal on-board ing rong kendaraan kasebut lan

Sambungake karo antarmuka OBD-Ⅱ, priksa pasokan listrik saben modul, lan sekaligus transfer informasi telpon pinter menyang terminal kendharaan liwat Bluetooth ing dalan lurus udakara 1km, lan loro kendharaan kasebut bakal diwiwiti kanggo mriksa kondisi kerja saben modul sistem sajrone nyopir. Nindakake tes kanggo verifikasi stabilitas, kepraktisan lan akurasi sistem.

2.2 Asil tes

Sistem iki milih kendharaan nyata kanggo nyoba sistem kasebut. Asil tes nuduhake manawa terminal sing dipasang ing kendaraan bisa nggabungake macem-macem modul lan kanthi lancar nyadari fungsi desain sing diarepake.

1) Ing babagan nglumpukake data, kaloro kendaraan kasebut bisa kanthi akurat ndeleng informasi wektu-nyata kendharaan kendaraan ing layar LED lan piranti seluler, sing intuisi lan trep kaya sing dituduhake ing gambar

7 ditampilake.

2) Ing babagan pangukuran jarak nyopir, kanggo verifikasi akurasi jarak sing diukur, nalika kendaraan diwiwiti lan mandheg, jarak ing antarane rong kendaraan kasebut diukur nganggo tongkat meter.

Supaya bisa mbandhingake karo data sing diukur nganggo GPS. Umume dipérang dadi rong klompok eksperimen: 1) Kendaraan ing ngarepe tetep, lan kendharaan ing mburi mulai nyedhaki kendharaan ing ngarep 100m lan mandheg sawise tekan jarak tartamtu; 2) Kaloro kendharaan diwiwiti kira-kira lan mandheg sawise nyopir sawetara wektu.

Sajrone rong set tes eksperimen, sistem nggunakake modul GPS kanggo misahake hubungan antarane jarak antarane rong kendaraan lan wektu kasebut. Sawise pirang-pirang pangukuran lan nilai rata-rata, ditemokake kesalahan ing antarane GPS lan jarak nyata ana ing 0,5 m. Yen jarak kendharaan kurang saka 2m, kesalahan bakal nambah. Iki nuduhake manawa sistem iki ing dhasar bisa entuk informasi jarak ing antarane kendaraan kanthi akurat lan cepet kanthi nggunakake sistem posisi GPS, lan bisa sesambungan karo informasi posisi ing antarane rong kendaraan kasebut kanthi wektu nyata liwat DSRC, supaya ngelingake posisi relatif kendaraan .

T7

3 Kesimpulan

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.

G-M200-2

 


Wektu kiriman: Sep-18-2020