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

A technology of electronic non-stop and roadside unit, which is applied in the direction of instruments, ticketing equipment, etc., and can solve problems such as errors

Active Publication Date: 2012-11-28
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 are likely to receive the transaction signal from the side lane roadside unit. Wrongly traded with other RSUs

Method used

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

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Embodiment Construction

[0027] 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. The transaction signal encoding between the roadside unit and the vehicle-mounted unit adopts the national standard FM0 code (for an example of the coded data waveform of the national standard FM0 code, see figure 2 ), the national standard FM0 code signal is arranged in sequence in order of wake-up signal, preamble, frame header, frame information and frame tail. Let the on-board unit discern where the frame information is located in the timing sequence. 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. The timing is as follows image 3 shown. For lane B, because it is ...

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Abstract

The invention relates to a signal downlink method of an electronic toll collection road side unit and a function module structure for realizing the signal downlink method mainly by computer programs. The method comprises the following steps of: when not transacting with an on-board unit, if receiving a synchronous transaction command, synchronously transmitting a transaction signal to the lane; when transacting with the on-board unit of the lane, if receiving the synchronous transaction command, synchronously transmitting a disturbance signal to the lane so that other on-board units entering the lane at the moment do not analyze the transaction signal which is synchronously transmitted by a bypass road side unit. When the road side unit transacts with the on-board unit of the lane, the transaction between the other on-board units entering the lane and the bypass road side unit can be prevented.

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 roadside unit of the side lane is sending a transaction signal, it may cause the on-board unit to mistakenly trade with the roadside unit of the side lane, resulting in repeated deduction, wrong release, False alarms and other conseque...

Claims

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Application Information

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