Signal downlink method and device of electronic toll collection (ETC) road side unit and ETC method

An electronic non-stop, roadside unit technology, applied in instruments, ticketing equipment, etc., can solve problems such as errors

Inactive Publication Date: 2012-10-03
SHENZHEN GENVICT TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The problem in practical application of the technical solution using synchronizers is that when a roadside unit is trading with the vehicle-mounted unit of this lane, if other vehicle-mounted units also enter the lane at this time, because the roadside unit is in the process of trading , so even if the synchronizer sends a synchronous transaction command at this time, the roadside unit will not send a transaction signal to establish another transaction, so other vehicle-mounted units that enter later may be wrong because they received the transaction signal from the bypass side unit trade with other RSUs

Method used

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  • Signal downlink method and device of electronic toll collection (ETC) road side unit and ETC method
  • Signal downlink method and device of electronic toll collection (ETC) road side unit and ETC method
  • Signal downlink method and device of electronic toll collection (ETC) road side unit and ETC method

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Experimental program
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Embodiment Construction

[0030] Electronic non-parking toll booths such as figure 1 , there are three lanes in the same direction A, B, and C, and a roadside unit is set corresponding to each lane, and the signal coding between the roadside unit and the vehicle-mounted unit adopts the Cantonese standard Manchester code (for an example of the coded data waveform of the Cantonese standard Manchester code, see figure 2 ), the Cantonese standard Manchester code signal is arranged in sequence as preamble, frame header, frame information and frame tail. The preamble is used to wake up the vehicle-mounted unit and provide the vehicle-mounted unit with signal synchronization. The position of the frame information in the timing. Suppose a car enters lane B (on-board unit 4 is arranged on it), but no car enters lanes A and C. Synchronizer 3 sends synchronous transaction commands to roadside units a, b, and c, so that each roadside unit can synchronously send transaction signals to the lane where it is located...

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Abstract

The invention discloses a signal downlink method of electronic toll collection (ETC) road side unit and a functional module framework for realizing the method mainly by a computer program. When the functional module framework does not transact with an on board unit (OBU), if receiving a synchronous transaction order, the functional module framework synchronously sends a transaction signal to a lane; and when the functional module framework transacts with the OBU, if receiving the synchronous transaction order, the functional module framework synchronously sends a disturbance signal to the lane, thus other OBUs entering the lane can not analyze the transaction signal simultaneously sent by a bypass side unit. When the road side unit transacts with the OBU of the lane, other OBUs entering the lane can be prevented from transacting with the bypass side unit. The invention also discloses an ETC method.

Description

technical field [0001] The invention relates to a signal downlink method of an electronic non-stop charging roadside unit and a functional module framework for realizing the method mainly through a computer program. Background technique [0002] The electronic non-stop toll booth has multiple lanes, and one or more roadside units (RSU) are set corresponding to each lane. An on-board unit (OBU) is installed on the vehicle. When the car enters one of the lanes, the on-board unit will generally receive the transaction signal sent by the roadside unit of the lane, and will be awakened by the transaction signal to perform the transaction. If the roadside unit of the lane does not send a transaction signal when the vehicle enters the lane, but the bypass side unit is sending a transaction signal, it may cause the vehicle unit to mistakenly trade with the bypass side unit, resulting in repeated toll deductions, false releases, and false alarms Wait for the consequences. [0003]...

Claims

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Application Information

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Patent Type & AuthorityPatents(China)
IPC IPC(8): G07B15/06
Inventor林树亮徐根华李兴锐
OwnerSHENZHEN GENVICT TECH