Application of A9 core board on highway RSU controller

In order to deepen the reform of the toll road system, improve the efficiency of the comprehensive transportation network, and reduce logistics costs, toll stations on the provincial borders of expressways will be cancelled, and expressway management is also facing tremendous changes. The development of ETC has ushered in unprecedented opportunities. This article will introduce the latest ETC industry solutions in detail.

Abstract: In order to deepen the reform of the toll road system, improve the efficiency of the integrated transportation network, and reduce logistics costs, toll stations on the provincial boundary of expressways will be cancelled, and expressway management is also facing tremendous changes. The development of ETC ushered in unprecedented opportunities. This article will introduce the latest ETC industry solutions in detail.

In order to deepen the reform of the toll road system, improve the efficiency of the integrated transportation network, and reduce logistics costs, the national expressway provincial toll stations will be basically eliminated within two years, and the national expressway provincial toll stations will be basically eliminated by the end of 2019, so as to enhance the people’s sense of acquisition , Happiness, and security.

The General Office of the Ministry of Transport issued the “Notice of the General Office of the Ministry of Transport on Vigorously Promoting the Development and Application of High-speed Power ETC”, clarifying that by the end of 2019, more than 100 million new ETC users nationwide will be added, and the car installation rate in each province (region, city) Reach over 80%, and the ETC utilization rate of vehicles on the same expressways has reached over 90%. The expressways basically realize fast and non-stop toll collection. At the same time, a reference value was given for the issuance tasks of 31 provinces in 2019, and each province is required to submit the issuance work plan to the Highway Bureau of the Ministry of Transport for the record before the end of May.

China’s highway management is facing tremendous changes, and the development of ETC ushered in unprecedented opportunities.

Application of A9 core board on highway RSU controller

ETC

RSU:

RSU, the English abbreviation of Road Side Unit, literally translates to the meaning of Road Side Unit. It is installed on the road side in the ETC system and uses DSRC (Dedicated Short Range Communication) technology to communicate with the OBU (On Board Unit). , A device that realizes vehicle identification and Electronic deduction.

The RSU is composed of a high-gain directional beam control read-write antenna and a radio frequency controller. The high-gain directional beam control read-write antenna is a microwave transceiver module, responsible for signal and data transmission/reception, modulation/demodulation, encoding/decoding, encryption/decryption; the radio frequency controller controls the transmission and reception of data and processes the upper computer Module for sending and receiving information.

OBU:

OBU (the abbreviation of On board Unit), literally translates to the meaning of on-board unit, which is a microwave device that uses DSRC (Dedicated Short Range Communication) technology to communicate with RSU. In the ETC system, the OBU is placed on the car, and the RSU-Road Side Unit (RSU-Road Side Unit) is set up on the roadside, and they communicate with each other through microwaves. When the vehicle passes the RSU at high speed, the OBU and RSU use microwave communication, just like our non-contact card, but the distance is longer-ten meters, the frequency is higher-5.8GHz, when passing, the true and false are identified and obtained Model, calculate the rate, deduct the toll.

RSU is a key equipment for the entire ETC toll collection, which is mainly used to deploy at toll gate intersections or expressway gantry to perform card reading and charging for the on-board OBU. The specific working process is shown in the figure.

Application of A9 core board on highway RSU controller

Schematic diagram of RSU and OBU

ETC work overall structure

The overall ETC architecture is shown in the figure. The RSU is installed on the gantry above the high-speed, and communicates with the control box under the gantry via Ethernet.

Application of A9 core board on highway RSU controller

ETC overall architecture

Application of A9 core board on RSU controller

Application of A9 core board on highway RSU controller

RSU controller architecture

The A9 core board is mainly applied to the RSU control device. The entire control device architecture is shown in the figure above. The solution is realized: A9 core board + backplane (leading out the PCIE interface and other interfaces of the core board). The A9 core board communicates with the encryption card in the client device through the PCIE interface. The A9 core board leads to the communication between the Ethernet (or 485) and LPC and the antenna signal processing board. In addition, two USB channels are required, one is used for debugging, and the other is connected to electronics. hard disk.

ETC used to charge tolls based on toll gates and entrances, but now it is changed to tolls in sections on expressways, with a gantry frame installed approximately every 10-100Km. A fee will be charged every time a vehicle passes through a gantry. In addition to the RSU, the gantry will also be equipped with a camera to double-identify the vehicle to avoid discrepancies between the OBU and the license plate.

Application of A9 core board on highway RSU controller

RSU gantry

ZLG Ligong Technology·Zhiyuan Electronics A9 Core Board

The M6708-T series simple dual-core/quad-core Cortex-A9 industrial control core board adopts the dual-core/quad-core Cortex-A9 processor of the NXP I.MX6 series, and integrates high-performance interfaces such as CAN, Gigabit Ethernet, PCIe, and SATA-2. At the same time, it integrates multimedia interfaces such as LVDS, HDMI, MIPI camera, and supports 1080P high-definition video decoding, 2D/3D codec, and provides scalable solutions for digital signage, high-end instruments, medical equipment, and industrial applications.

Application of A9 core board on highway RSU controller

A9 core board

The Links:   2SB1132T100Q MG150M2YK1 IGBT

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