Calculation method of vehicle speed based on UHF radio frequency identification

Abstract

The present invention relates to a method for calculating vehicle speed based on UHF radio frequency identification, which includes the following steps: a. A directional antenna is set directly above the road, the directional antenna is connected with a vehicle electronic tag reader, and the vehicle electronic tag reads The reader can transmit and receive radio frequency signals with the car electronic tags on the car within the effective coverage area of ​​the directional antenna; b. The car electronic tag reader captures multiple radio frequency echo signals of the car electronic tags on the same car at different times through the directional antenna, The car electronic tag reader obtains the reading position of the car electronic tag according to the captured radio frequency echo signal, and calculates the instantaneous driving speed of the car; c. The car electronic tag reader calculates the driving speed of the car based on the instantaneous driving speed calculated above. The invention can realize the supervision of the traffic running state of the vehicles running on the road, and has the advantages of simple calculation method, high precision and strong environmental adaptability.

Description

technical field [0001] The invention relates to a calculation and processing method of vehicle running speed, in particular to a calculation method of vehicle running speed based on ultra-high frequency radio frequency identification, which belongs to the technical field of traffic management. Background technique [0002] Since entering the 21st century, with the rapid development of my country's economy and the advancement of urbanization, the number of residents in Beijing, Guangzhou, Nanjing, Xi'an and many other large and medium-sized cities has reached 20 vehicles per hundred households, and my country is accelerating its entry into the automobile industry. society. However, the civilized driving behavior of the public and the awareness of social responsibility have not been improved at the same time. Uncivilized driving behaviors such as severe speeding, random lane changes and failure to obey traffic signals are common, resulting in increasingly serious urban traffic ...

AI Technical Summary

Problems solved by technology

The main disadvantage of these technologies in application is that they cannot effectively identify fake license plate vehicles, and are greatly affected by environmental factors such as weather and lighting conditions.

Images