Intersection traffic flow detection method and device based on directional antenna

A technology of crossroads and directional antennas, applied in traffic flow detection, road vehicle traffic control systems, instruments, etc., can solve the problems of high cost and maintenance costs, achieve wide coverage, accurate traffic flow detection, and overcome mutual interference effects

Active Publication Date: 2015-05-27
CHANGAN UNIV
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AI Technical Summary

Problems solved by technology

Although this type of detection method is more convenient in use, its cost and daily maintenance costs are much higher than other detection methods

Method used

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  • Intersection traffic flow detection method and device based on directional antenna
  • Intersection traffic flow detection method and device based on directional antenna
  • Intersection traffic flow detection method and device based on directional antenna

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Embodiment

[0108] The method for detecting traffic flow at intersections based on directional antennas in this embodiment, its specific implementation method is as follows:

[0109] Step 1: Setting up the traffic flow detection area, the specific setting method is as follows:

[0110] Step 101, beacon receiving devices A, B, C and D are set up on the four red street lights at the intersection respectively, and each beacon receiving device is equipped with a directional antenna of a certain specification. The selection and setting of directional antenna parameters mainly include the following aspects:

[0111] ① Calculate the downtilt angle α. Perform parameter verification on the antennas whose models are AIR-ANT5114-P2M-N, TL-ANT5823B, and TL-ANT5830B in Table 1. According to the relevant provisions of the national "Temporary Provisions on Urban Planning Quota Index", roads can be divided into four grades, urban arterial roads belong to grade two roads, and the total width of roads is...

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Abstract

The invention discloses an intersection traffic flow detection method and device based on a directional antenna. The method comprises the following steps: sending signals by using a vehicle-mounted broadcast unit, wherein the signals are received by a beacon receiving device to collect beacon messages of vehicles; transmitting the collected beacon messages of the vehicles to a data processing module and analyzing the beacon messages of the vehicles to realize statistics of the traffic flow and identify the traveling directions of the vehicles; transmitting traffic detection information obtained by the data processing module to a remote monitoring system through a wireless transmission module so as to realize statistics of the traffic flow and remote monitoring; storing information in the monitoring system by using a data storage module. According to the method and device, the traffic flow is detected by using the directional antenna, so that the defects that mutual interference easily happens and the detection range is narrow in a conventional method adopting Bluetooth and the like are overcome; the coverage of the directional antenna is wide, so that the detection of traffic flow is relatively accurate and the traffic flow is accurately measured under the specific conditions that vehicles turns in the intersection regions.

Description

technical field [0001] The invention relates to an electronic automatic detection device and method, in particular to a directional antenna-based crossroad traffic detection method and device. Background technique [0002] Traffic flow detection has always been an important means of obtaining traffic information. People analyze the traffic flow information to determine whether the road design is reasonable and whether the road scheduling method is feasible. Especially for intersections with complex traffic conditions and frequent accidents, the simpler, more efficient and accurate traffic detection provides a more reliable basis for reducing traffic accidents at intersections and setting reasonable intervals between traffic lights. [0003] In the existing research results, there are two main types of traffic detection methods: one is contact measurement, including piezoelectric, pressure tube detection, loop coil detection and magnetic detection. This measurement method is...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G08G1/01G08G1/056G08G1/065
CPCG08G1/012G08G1/056G08G1/065
Inventor 赵祥模马峻岩惠飞马佳荣孟强
Owner CHANGAN UNIV
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