Panilitian sareng desain sistem kendaraan anti maling maling anu cerdas dumasar kana NB-IOT

Roadragon has designed a vehicle anti-theft system based on NB-IOT, which mainly uses NB-IOT wireless communication technology, GPS and Beidou dual-mode positioning technology to address the current public security problems of frequent theft of bicycles and electric motorcycles. The overall solution for the investigation after the case is reached.

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With the promotion of the concept of low-carbon travel in recent years, the use of high-end bicycles, electric vehicles, and motorcycles has increased, and the subsequent stolen and difficult-to-track vehicles have become a major problem that plagues many car owners. However, the common vehicle anti-theft solutions on the market still have many defects[1]:

(1) Solusi 2G: 2G ngirangan kapasitas sareng mundur tina jaringan, kalayan sinyalna lemah, sinyal goréng, henteu aya sinyal di tempat parkir bawah tanah, sareng konsumsi kakuatan tinggi.

(2) Larutan RFID: Kandaraan umumna langkung ti sapuluh méter jauh ti tiang pamaca RFID, sinyalna lemah pisan, data henteu tiasa dibaca, sareng terminal na dipegatkeun; kendaraan moal tiasa ayana atanapi dilacak di kabupaten atanapi padesaan, sareng daérah perkotaan dugi ka pameuntasan konci; Pamaca tiang jalan kedah diperiksa sareng dijaga sering.

Tujuan tina kakurangan tina dua skéma di luhur, makalah ieu ngarancang sistem anti-maling kandaraan anu cerdas dumasar kana NB-IOT, anu ngagaduhan kaunggulan jangkauan lega, koneksi ageung, sareng konsumsi daya rendah.

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1 Arsitéktur sistem

The intelligent anti-theft system based on NB-IOT mainly includes three parts: equipment terminal , background processing system and user terminal. The system terminal sensor can be connected to the operator’s IO domain intranet through NB-IOT. The background application system supports the docking of public security network interactive case data. The user can monitor the vehicle through the mobile phone, and the background management system can maintain the overall user data. Management and monitoring.

2 Rencana sadayana

This system transfers the GPS&Beidou satellite dual-mode positioning data and the state value of the vibration sensor to the single-chip STM32, which is then uploaded to the core network through the NB-IOT communication module, and transmitted to the cloud platform through the HTTPS protocol, and then through the cloud transparent transmission function, It is forwarded to the cloud server, then stored to MySQL and transmitted to the APP on the mobile phone.

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3 Desain hardware sistem

Alat-alat hardware tina sistem ieu utamina kalebet modul deteksi status kendaraan, GPS & Beidou modul posisi dual-mode satelit sareng modul komunikasi NB-IOT, modul kontrol mikrokomputer tunggal chip STM32. Kerangka perangkat keras sistem dipidangkeun dina Gambar 2. Fungsi modul deteksi kaayaan getaran nyaéta pikeun ngadeteksi kaayaan kendaraan sareng naha aya gerakan kendaraan. Fungsi modul posisi satelit GPS & Beidou modul dua-modus nyaéta pikeun milarian posisi kendaraan, kéngingkeun lintang sareng nilai bujur, sareng ngirimkeun kana single-chip STM32. NB

The function of the IOT communication module is to send the vehicle status collected by the sensors and the positioning information resolved by the main control chip to the IoT cloud platform. As the main control chip, the STM32 microcontroller is the core part of the system hardware. Its function is to implement the underlying functions of the system through code, such as obtaining the longitude and latitude data of the GPS& Beidou satellite dual-mode positioning through the serial port interrupt and detecting whether the vibration sensor inputs a high level , Pack the acquired data and upload it to the cloud server through the NB-IOT module. At the same time, it also receives the instructions issued by the mobile phone APP to determine whether the anti-theft mode should be turned on.

3.3 Analisis hasil ékspérimén

Éta tiasa ditingali tina Gambar 2 yén dina béda hyperparameter Agent1 ~ 4, aliran kendaraan dina fase Agent1, Ag ent2, sareng Agent3 dikontrol dina 600 kendaraan / jam, sedengkeun aliran kendaraan dina fase Agent4 dikontrol dina 500- 600 kendaraan / jam. Setelan ieu Éta sacara épéktip tiasa ngajamin karagaman sareng acak tina skénario tés. Diantarana, status sinyal dina jaringan patalimarga agén tiasa diwakilan ku panjang antrian ngantosan di simpang; fungsi aksi pikeun maksimalkeun peunteun nilai pahala tiasa diwakilan ku nilai absolut tina bédana antara ngantosan wétan-kulon sareng kalér-kidul ngantosan panjang antrian. Hasil ékspérimén nunjukkeun yén, dibandingkeun sareng nilai fungsi jaringan saraf tina Agent1 sareng Agent2, Ag

Kinerja ent3 sareng Agent4 dina kendali sinyal lalu lintas perkotaan langkung stabil, sareng rata-rata kagancangan rata-rata Agent4 langkung ageung sareng rata ngantri panjang ngantri langkung alit, anu langkung saé tibatan Agent1, Agent2, sareng Agent3.

Kacindekan

Dumasar kana sistem SCATS, nagara urang ngusulkeun algoritma pembelajaran panguatan anu jero pikeun agén patalimarga (Agén) dumasar kana jaringan kendali sinyal lalu lintas kompléks kota pikeun ngumpulkeun, modél sareng nganalisis data aliran patalimarga dina waktos anu benten, kalebet lokasi kendaraan kota. , Kecepatan lalu lintas global, panjang ngantri antosan rata-rata sareng simulasi data sanésna, hasil kontrol sinyal lalu lintas kota anu diala langkung stabil. Ngalangkungan optimasi parameter waktos anu sanés sareng pamilihan skéma babandingan huruf héjo, éta tiasa nyumponan kabutuhan sinyal kontrol patalimarga simpang dina waktos anu béda.

4 Desain parangkat lunak sistem

Desain parangkat lunak sistem ieu kalebet modul kontrol STM32 [2], modul posisi GPS-Beidou dual-mode, modul komunikasi data NB-IOT. Sapertos anu ditingalikeun dina alur sistem perangkat lunak 3, sistem terminal alat dihurungkeun, sirkuit hardware periferal sareng modul komunikasi NB-IOT diinisialisasi, teras éta nyambung kana platform awan IoT. Upami sambunganna henteu hasil, antosan sababaraha detik sateuacan sambungkeun deui. Selang ngirim nyaéta 5 detik. Upami interval waktos langkung ageung ti 5 detik, data posisi bakal diala, inpormasi posisi bakal dikirim ka platform awan, sareng loketna bakal diberesihan, maka data balik platform bakal diala, upami data balik henteu kosong, data deteksi bakal dilakukeun, teras gelungna bakal dilebetkeun Dina awak, teraskeun kéngingkeun sareng ngirim inpormasi lokasi.

4.1 Desain parangkat lunak modul kontrol STM32

Modul kontrol STM32 nganggo fungsi inisialisasi pikeun nyetél prioritas prioritas sareng prioritas réspon tina port serial sareng pin interrupt external. Port serial tanggung jawab nampi data GPS sareng ngirim sareng nampi data tina modul NB-IOT, sareng pin interrupt éksternal ngadeteksi input tingkat sénsor shock.

4.2 Desain parangkat lunak modul posisi GPS & Beidou dual-mode

Setél heula modul posisi Beidou kana modeu pangukuran, teras kéngingkeun data pamosisian Beidou, ngitung sudut sumbu-Z, teras setél modul pamosisian Beidou kana modeu sayaga, sareng balik deui ka posisi gangguan utama. Aktipkeun port serial nampi terminal sareng atur prioritas ngaganggu na. Fungsi pengolahan port serial ngaganggu nampi data anu dikirim ku modul posisi GPS & Beidou dual-mode sareng nganalisis nilai lintang sareng bujur anu diperyogikeun.

4.3 Desain parangkat lunak modul komunikasi data NB-IOT

Modél komunikasi NB-IOT [4] ngagunakeun paréntah AT pikeun nuduh, modul komunikasi inisialisasi sub-fungsi ngonpigurasikeun parameter NB-IOT, nyetél NB-IOT kana modeu CMD, sareng nyetél alamat IP sareng nomer port tina awan transmisi transparan. Data sérial anu ditampi ku NB-IOT STM32 diunggah kana server cloud ngalangkungan protokol HTTPS. Pangiriman data nyaéta ngirim pesen dina format héksadesimal, sareng nampi sareng ngaéksekusi pitunjuk ngalangkungan fungsi pangolahan port sérial pikeun ngahontal panarimaan data.

4.4 Desain terminal pangguna

Kerangka umum terminal pangguna ditingalikeun dina Gambar 5. Sisi pangguna tina sistem ieu nganggo alat pamekar wéb WeChat pikeun ngembangkeun applet WeChat. Bagian parangkat lunak terminal pangguna utamina kalebet log in inpormasi pangguna, aksés kana alat pangguna, kéngingkeun data alat pangguna, sareng ningalikeun data alat pangguna Ngantosan opat bagéan.

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5 Tés sistem sareng analisis

Sistem ieu didukung ku batré litium sareng ngagaduhan tegangan suplai kakuatan éksternal: 12V-40V, suhu damel: 40 ° C ~ 70 ° C, kalembaban: <95% RH, pita frékuénsi dukungan LTE-FDD B3 / B5 / B8, LTE-M1, LTE-NB1.

5.1 Tés fungsi parangkat lunak sistem

Ngaliwatan pangukuran lapangan, nalika kendaraan ngalir, alarm dipicu sareng inpormasi alarm diunggah kana awan. Sistem tiasa milarian inpormasi kandaraan sacara real waktos, sapertos anu dipidangkeun dina Gambar 6; nalika kendaraan ngageter, éta bakal masihan alarm tina geter kendaraan anu teu normal, sapertos anu dipidangkeun dina Gambar 7; sareng telepon sélulér tiasa ningali inpormasi alarem anu saluyu.

6 Kacindekan

The intelligent vehicle anti-theft system designed in this paper adopts NB-IOT technology to realize wireless data transmission, which can ensure the speed and quality of data transmission, and has a wider coverage; it adopts GPS & Beidou dual-mode positioning system, which can still be used after the vehicle is stolen. See the real-time location of the vehicle from the mobile terminal, so as to quickly find the stolen vehicle, which provides an effective means for prevention before the case and investigation after the case.


Waktos Post: Sep-18-2020