Electronic non-stop toll collection system and method

Abstract

The invention relates to an electronic non-stop toll collection system and method. The system comprises a signal detection unit with the detection range as a first communication range and a roadside unit with the detection range as a second communication range; the projections of the first communication range and second communication range are stacked, and the projection of the second communication range on the road far from a coming vehicle side comprises the portion which is not stacked with the projection of the first communication range on the road; the signal detection unit is used for receiving a vehicle-mounted unit signal of a vehicle entering the first communication range so as to acquire a first recognizing number; the roadside unit is used for receiving a vehicle-mounted unit signal of a vehicle entering the second communication range so as to acquire a second recognizing number; when the first and second recognizing numbers acquired from the vehicle-mounted unit signals received at the same moment are different, the vehicle-mounted unit of the second communication range performs payment transaction. The system is simple in structure, and vehicle following interference can be prevented effectively.

Description

technical field [0001] The invention relates to the technical field of intelligent transportation, in particular to an electronic non-stop charging system and method. Background technique [0002] Electronic Toll Collection (hereinafter referred to as ETC) has developed rapidly in the field of intelligent transportation. In the prior art, ETC consists of roadside units (RSU: Road-Side Units) and on-board units (On-Board Unit, hereinafter referred to as OBU, also known as electronic tags), and charges are deducted for vehicles equipped with OBU, monitoring or management. [0003] Usually, the communication between the RSU and the OBU is carried out using a dedicated short-range communication technology (Dedicated Short Range Communications, hereinafter referred to as DSRC), which is determined by the direction and power of the antenna used by the RSU. In practical applications, the distribution range and intensity of electromagnetic waves emitted by the RSU 101 are not stri...

AI Technical Summary

Problems solved by technology

In addition, different car windows and car film materials have varying degrees of influence on the sensitivity of the OBU, which increases the uncertainty of the fuzzy communication area 104, which is likely to cause car-following interference and the occurrence of missed and wrong deductions.

[0004] Car-following interference means that the vehicle behind trades before the vehicle in front, resulting in the vehicle in front being released without a transaction, while the vehicle behind completes the transaction (deduction) but cannot pass

Specifically, the following situations mainly include: (1) Both the front car and the rear car are equipped with OBUs (both OBU sensitivities meet the national standard), and the rear car completes the transaction before the front car due to its higher OBU sensitivity. As a result, the vehicle in front was released without a transaction, but the vehicle in the rear was intercepted after completing the transaction; (2) In the ETC channel and MTC (manual semi-automatic toll collection) / ETC mixed channel, the vehicle in front is not equipped with OBU while the vehicle in the rear is equipped with OBU, and the vehicle in front has not yet When manual or semi-automatic operations (such as payment, card withdrawal, etc.) are completed, the OBU and RSU of the following vehicle have completed the transaction. At this time, the vehicle in front that has not paid the fee will be released, while the vehicle behind that has completed the transaction will be intercepted; (3) in ETC In the dedicated channel, both the front car and the rear car are equipped with OBUs, but the sensitivity of the rear car’s OBU meets the national standard, while the front car’s OBU sensitivity is lower or even lower than the national standard threshold (it may be affected by the body material or car film). At this time, the rear car The transaction may be completed before the vehicle in front, so that the vehicle in front is released without completing the transaction, and the vehicle behind completes the transaction but is intercepted or requires multiple transactions

[0005] Different methods of preventing car-following interference are disclosed in the prior art. Although the communication between the RSU and the low-sensitivity OBU is realized by using a larger RSU signal transmission power, it has a certain effect on the first or second type of car-following interference mentioned above. , but while increasing the RSU signal strength, it also increases the RSU's effective communication area and fuzzy communication area (such as covering the position of the rear car), which increases the probability of car-following interference, so it cannot effectively solve the third type of follow-up car interference

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