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Vehicle speed measuring method and system based on radio frequency identification

A wireless radio frequency and vehicle technology, applied in the traffic control system of road vehicles, traffic control systems, instruments, etc., can solve the problems of low cost of a single unit, long transmission time, and inability to be widely used in a wide range, and achieve installation and use costs The effect of low and high recognition efficiency

Inactive Publication Date: 2014-05-07
AEROSPACE INFORMATION
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Microwave radar speed measurement is accurate, but the cost of a single unit is too high to be widely used in a wide range; the cost of a single camera video surveillance method is low, and when there are many vehicles driving in the same direction, the recognition rate and test accuracy are very low, and the amount of image transmission data Large, long transmission time, high communication costs, poor real-time performance, and manual judgment

Method used

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  • Vehicle speed measuring method and system based on radio frequency identification
  • Vehicle speed measuring method and system based on radio frequency identification
  • Vehicle speed measuring method and system based on radio frequency identification

Examples

Experimental program
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Embodiment 1

[0024] The embodiment provides a schematic diagram of the principle of an RFID-based vehicle speed measurement method as shown in figure 1 As shown, the specific processing flow is as follows figure 2 As shown, the following processing steps are included:

[0025] Step 21. Set up a speed calculation system, at least 3 RFID systems, and perform data transmission between the speed calculation system and each RFID system through wired data communication or 3G wireless data communication. The above-mentioned speed calculation system transmits data and receives instructions to the background data center through 3G wireless communication or wired data communication. The above-mentioned RFID system includes a reader and an antenna, and each reader is connected to one or more than one antenna. The above speed calculation system may be a computer system.

[0026] The above-mentioned speed calculation system can be set near the RFID system, or can be set in the middle of each RFID sy...

Embodiment 2

[0041] This embodiment provides a kind of RFID-based vehicle speed measurement system, its specific structure is as follows Figure 8 As shown, the following units are included:

[0042] At least three RFID systems 81 are used to transmit radio frequency signals through antennas according to the same transmission time and transmission angle. forwarded to the speed calculation system.

[0043] The speed calculation system 82 is used to calculate the speed of the vehicle at the time of receiving the response signals sent by the at least three RFID systems and the distance between the at least three RFID systems and the speed calculation system. Travel speed in the area between any two of the at least 3 RFID systems.

[0044] Specifically, the at least three RFID systems 31 are respectively installed on equidistant and highly consistent benchmark objects in a front-to-back manner, and the centerline of the antenna of each RFID system forms the same set angle with the ground pla...

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Abstract

The invention provides a vehicle speed measuring method and a system based on RFID (Radio Frequency Identification). The method comprises that: antennas of at least three RFID systems emit radio frequency signals outwardly with same emission time and emission angles, and the at least three RFID systems receive response signals of the radio frequency signals which carry vehicle information and are sent by a running vehicle; and the at least three RFID systems forward the response signals to a speed calculating system which calculates running speed of the vehicle in regions between any two of the three RFID systems according to time of the response signals sent by the at least three RFID systems and distance between the at least three RFID systems and the speed calculating system. Speed of multiple vehicles running in the same direction can be measured simultaneously, and speed measuring regions of the vehicles can be flexibly confirmed according to geographical positions of the RFID systems so that identification efficiency is high and installation and use cost is low.

Description

technical field [0001] The present invention relates to the technical field of vehicle speed measurement, in particular to a vehicle speed measurement method and system based on RFID (Radio Frequency Identification, radio frequency identification). Background technique [0002] Vehicle speeding is one of the main causes of frequent traffic accidents. According to incomplete statistics of relevant data, traffic accidents caused by speeding in my country account for more than 30% of all traffic accidents. The traffic management department ranks the control of speeding behavior in an important position, and invests a lot of manpower, material resources, and financial resources every year to control vehicle speeding behavior, but the traffic accidents caused by speeding are still high, and there is a trend of increasing year by year. [0003] There are many ways to check the speeding of vehicles now, mainly including microwave radar speed measurement method and camera video moni...

Claims

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Application Information

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IPC IPC(8): G08G1/052G06K7/00
Inventor 马振洲杨会平张尊兰王顺仁
Owner AEROSPACE INFORMATION
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