Positioning device and method for on-board unit in ETC system

An on-board unit and positioning device technology, applied in the field of intelligent transportation, can solve problems such as non-compliance, inability to inspect vehicles in real time, and inability to perceive the precise position of OBU, and achieve the effect of precise positioning

Active Publication Date: 2011-06-15
BEIJING WATCH DATA SYST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] At present, in the MLFF system, the optical positioning method is generally used, which can only judge the position of the vehicle, but cannot perceive the precise position of the OBU; The method of optically locating the vehicle cannot conduct real-time inspection of the vehicle

Method used

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  • Positioning device and method for on-board unit in ETC system
  • Positioning device and method for on-board unit in ETC system
  • Positioning device and method for on-board unit in ETC system

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Embodiment Construction

[0023] Embodiments of the present invention provide a positioning device and method for a vehicle-mounted unit in an ETC system, which can use multiple antennas to respectively receive microwave signals of the vehicle-mounted unit, and respectively obtain the power intensity values ​​of each microwave signal, according to the power intensity value of each microwave signal As well as the position information of each antenna, the position information of the vehicle-mounted unit is determined. In the embodiment of the present invention, multiple antennas are used to locate the vehicle-mounted unit, so that the OBU can be precisely positioned.

[0024] The positioning device of the vehicle-mounted unit in the ETC system provided by the embodiment of the present invention, such as figure 1 shown, including:

[0025] At least two antennas 11 respectively receive microwave signals sent by the vehicle-mounted unit;

[0026] At least two antennas receive microwave signals sent by the...

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Abstract

The invention relates to the field of intelligent transportation, and discloses a positioning device and a method for an on-board unit (OBU) in an electronic toll collection (ETC) system. The positioning device and the method can be used for accurately positioning the OBU. The positioning device comprises at least two antennae, at lest two receiving modules and a data processing module, wherein the two antennae are used for receiving microwave signals sent by the on-board unit respectively; each one of the receiving modules is connected with one antenna respectively, and is used for acquiringthe power strength value of the microwave signal according to the microwave signal received by the connected antenna; and the data processing module is connected with each receiving module, and is used for determining position information of the on-board unit according to the power strength values of the microwave signals received by the at least two antennae in all antennae and the position information of the at least two antennae.

Description

technical field [0001] The invention relates to the field of intelligent transportation, in particular to a positioning device and method for a vehicle-mounted unit in an ETC system. Background technique [0002] With the development of the economy, the number of urban vehicles has increased, and the traffic volume on the road has increased significantly, while the expressway toll stations often become traffic jams. At present, the Electronic Toll Collection System (ETC system) adopted in China can accelerate the speed of vehicles to a certain extent and relieve traffic pressure. However, this scheme uses single-lane traffic with lane railings, and the speed of vehicles is not high. Since toll booths are still required, the construction and land occupation costs are relatively high. [0003] The Multi Lane Free Flow (MLFF) tolling technology does not require lane railings, does not restrict lanes, and the vehicle speed can reach the normal speed of the expressway, which is ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G08G1/123G01S5/02
Inventor 裴世兵王致远孙志强
Owner BEIJING WATCH DATA SYST
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