Electric toll road side equipment based on intelligent antenna technology
A technology of electronic toll collection and roadside equipment, which is applied in the field of ETC, can solve problems such as strong intensity, and achieve the effects of suppressing interference signals and flexible and convenient software upgrades
Active Publication Date: 2014-12-03
CHINA ELECTRONIC TECH GRP CORP NO 38 RES INST +1
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Problems solved by technology
At present, general roadside equipment can only complete basic communication functions, and the demand for vehicle positioning functions is increasingly strong in the application practice of ETC systems
Method used
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[0023] The content of the present invention will be described below in conjunction with specific embodiments.
[0024] Such as figure 1 Shown is a schematic diagram of the system structure of the roadside equipment of the present invention. The electronic toll roadside equipment based on smart antenna technology of the present invention includes: receiving antenna array 11, transmitting antenna array 12, calibration antenna 13, transmitting module 14, digital receiving array module 15, signal processing and control module 16, frequency source module 17. A power supply module 18 and a background computer 19.
[0025] Each module function of roadside equipment described in the present invention is as follows:
[0026] The receiving antenna array (11) is used to collect the vehicle data information sent by the vehicle equipment, demodulate and digitize it through the digital receiving array module (15), and transmit it to the signal processing and control module (16) through op...
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The invention relates to electric toll road side equipment based on the intelligent antenna technology, which comprises a receiving antenna array, a sending antenna array, a sending module, a digital receiving array module, a signal processing and control module and a frequency source module, wherein each array element of the receiving antenna array is respectively connected with respective receiving channel; the digital receiving array module integrates a plurality of receiving channels respectively connected with the array elements of the receiving antenna array; and the signal processing and control module is used for processing multi-channel receiving signals of the digital receiving array module, so as to confirm the positions of the communication vehicles and suppress disturbing signals. The road side equipment utilizes the digital receiving array and acquires the multi-channel receiving signals; and the positions of the communication vehicles can be accurately confirmed through methods, such as digital beam forming and wideband arrival direction estimation. The road side equipment can be widely used in the fields of road electric charge systems, automatic vehicle identification, vehicle in-out management, city road charge, and the like.
Description
technical field [0001] The present invention relates to a roadside equipment (Road Side Equipment, RSE) for ETC (Electronic Toll Collection, referred to as ETC, electronic non-stop toll collection), which has precise positioning of communication vehicles and interference suppression functions, and can be used for road electronic toll collection , urban road charges, automatic vehicle identification, vehicle access management and other fields. The device uses smart antenna technology to communicate with On-Board Equipment (OBE) for short distances, and at the same time, it uses Digital Beam Forming (DBF) and high-resolution Direction of Arrival Estimation (Direction of Arrival, DOA), accurately determine the position of the communicating vehicle, and suppress unwanted interference. Background technique [0002] The ETC system is an electronic automatic toll collection system for highways, bridges and tunnels. It uses various technical means such as electronics, communication...
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IPC IPC(8): G07B15/06G01S1/08
Inventor 兰天鸽江山戴连贵刘晓政吕继荣
Owner CHINA ELECTRONIC TECH GRP CORP NO 38 RES INST