Onboard unit in ETC (electronic toll collection) system, and system and method for testing onboard unit

A vehicle-mounted electronic tag and electronic tag technology, which is applied in the field of ETC, can solve the problems of high cost and inconvenient testing of electronic tags, and achieve the effect of low cost and strong practicability

Active Publication Date: 2013-03-27
北京易路行技术有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The invention proposes a vehicle-mounted electronic label, a test system and a test method in an ETC system, which are used to solve the problems of inconvenient and high-cost electronic label testing in the prior art

Method used

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  • Onboard unit in ETC (electronic toll collection) system, and system and method for testing onboard unit
  • Onboard unit in ETC (electronic toll collection) system, and system and method for testing onboard unit
  • Onboard unit in ETC (electronic toll collection) system, and system and method for testing onboard unit

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Experimental program
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Effect test

Embodiment 1

[0060] In this embodiment, the test of the electronic tag and the setting of the communication radio frequency parameters are performed through a special test IC card.

[0061] Such as image 3 Shown is a specific flow chart of the testing method of the electronic tag in this embodiment.

[0062] Step 300, insert the test IC card into the IC card slot of the electronic label, and wake up the electronic label;

[0063] Step 301, the IC card reading and writing unit reads the instruction information in the test IC card;

[0064] Step 302, the test control unit obtains the type of instruction information;

[0065] Step 303, the test control unit judges the working mode of the electronic tag according to the type of the instruction information: if it is a transaction instruction (the value of the instruction byte is 15H~17H), the electronic tag executes step 304 and enters the normal working mode; otherwise,

[0066] Step 305, judging whether the value of the command byte is 70...

Embodiment 2

[0088] In this embodiment, the electronic tag is tested and the communication radio frequency parameters are set through the DSRC remote device.

[0089] Since the transaction between the electronic tag and the roadside antenna of the ETC lane is realized through DSRC communication, it is also possible to use the special test BST method to make the electronic tag enter the test mode for corresponding tests.

[0090] DSRC communication always starts with the remote device (dedicated device or ETC roadside antenna) transmitting a Beacon Service Table (BST) signal with a wake-up signal (14KHz square wave), after the electronic tag is woken up , according to the instruction information in the BST signal, return the corresponding vehicle service table (Vehicle Service Table, VST) signal, and then carry out the corresponding transaction or test operation, and the electronic tag will enter the dormant state again after completion.

[0091] The DSRC communication method can not only r...

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Abstract

The invention belongs to the technical field of electronic toll collection (ETC), and particularly relates to an onboard unit in an ETC system, and a system and a method for testing the onboard unit. The method includes that firstly, the onboard unit enters a test mode after receiving a test instruction of remote special equipment or reading test information of an inserted special test IC (integrated circuit) card; and secondly, the onboard unit outputs a preset test signal according to the test instruction of the remote special equipment or the test information of the special test IC card, so that a radiofrequency signal quality test and/or a DSRC (dedicated short range communication) data receiving and transmitting test can be carried out. The onboard unit, the system and the method have the advantages that radiofrequency parameters of the onboard unit can be tested and set, so that the product performance of the onboard unit can be detected, and appropriate communication parameters can be set according to different service environments such as different signal attenuation conditions of window glass.

Description

technical field [0001] The invention belongs to the technical field of Electronic Toll Collection (ETC for short), and in particular relates to a vehicle-mounted electronic tag, a test system and a test method in an ETC system. Background technique [0002] At present, many provinces and cities in my country have built electronic non-stop toll collection systems for expressways. The ETC system realizes billing transactions through wireless communication between the roadside antenna of the ETC lane and the on-board electronic tag (On Board Unit, OBU). The communication protocol adopts the Dedicated Short Range Communication (DSRC) protocol. Among them, the electronic label supports the reading and writing function of the IC card, and the IC card is inserted into the electronic label as the medium of non-cash payment. As an IC card reading and writing machine, the electronic tag can read and write contact and / or non-contact IC cards. Among them, the communication between the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R31/00
Inventor 薛金银张北海李全发王梅张为民高文宝张晶晶尤鑫赵阳
Owner 北京易路行技术有限公司
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