A method and system for separating safety control and anti-disassembly functions from obu main body

Abstract

The invention relates to a method and system for separating safety control and an anti-demounting function from an OBU main body. The system comprises the vehicle-mounted unit OBU main body, wireless vehicle identification tags and road side units (RSUs). Each wireless vehicle identification tag comprises a safety chip, a coupled antenna and loaded paper media, the vehicle-mounted unit OBU main body is connected with the wireless vehicle identification tags in a wireless communication mode, and the RSUs are connected with the vehicle-mounted unit OBU main body in a wireless communication mode. Through the adoption of the method and system for separating the safety control and the anti-demounting function from the OBU main body, the safety control and the anti-demounting function of the OBU are made to be separated from the OBU main body, a user is made to replace OBU products freely according to needs, the internal circuit of the OBU is made not to be in a power-on detecting state all the time, and the service time of the internal batteries of the OBU can be prolonged.

Description

technical field [0001] The invention belongs to the technical field of intelligent transportation, and in particular relates to a method and a system for separating safety control and anti-disassembly functions from an OBU main body. Background technique [0002] OBU (the abbreviation of On board Unit, on-board unit) is a microwave device placed on the car to communicate with the roadside unit RSU (Road Side Unit) erected on the roadside. When the vehicle passes through the RSU at high speed, microwave communication is used between the OBU and the RSU, just like our contactless card, but the distance is farther - more than ten meters VS ten centimeters, and the frequency is higher - 5.8GHz VS13.56Mhz, through At the time, identify the true and false, obtain the car model, calculate the rate, and deduct the toll. The structure of the current OBU products generally adopts the following method: the OBU contains an embedded security control module ESAM (Embedded Secure Access M...

AI Technical Summary

Problems solved by technology

This will limit the use of OBU in two aspects: First, once the user has chosen to purchase an OBU product, when he wants to replace another OBU product, he must go to the point of purchase to re-install the new OBU product. Write your own vehicle information into the ESAM module of the product; second, due to the use of a mechanical anti-tamper switch, this requires that the internal circuit of the OBU must always be powered on to ensure real-time detection of illegal disassembly actions, although the OBU The standby current can be made very small at present, but it will still have a certain impact on the battery life inside the OBU

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