Road Traffic Flow Investigation System and Its Realization Method

Abstract

The invention discloses a road traffic flow investigation system and its realization method, wherein the road traffic flow investigation system includes a magnetic core induction sensor, a signal processing circuit, a data acquisition circuit and a data processing system connected in sequence, and the magnetic core induction sensor includes a first The coil, the second coil and the magnetic core; the signal processing circuit filters and amplifies the signal; the data acquisition circuit converts the analog signal into a digital signal; the data processing system calculates and counts the input digital signal, and obtains the vehicle type, vehicle speed and Traffic flow information for vehicle flow. The magnetic core induction sensor adopted by the invention not only has the characteristics of small size, simple installation, and small road damage surface, but also has high output signal strength, and the output waveform has obvious characteristics corresponding to vehicle types. In addition, the present invention adopts the RBF neural network to recognize the vehicle type, and has a high recognition rate for the vehicle type.

Description

technical field [0001] The invention relates to the field of road traffic management, in particular to a road traffic flow investigation system and its implementation method. Background technique [0002] The development of various roads in our country has entered the management, control and optimization stage from the large-scale construction period. Road traffic flow information including parameters such as traffic flow, vehicle type, vehicle speed, lane occupancy rate, and traffic density is the main basis for realizing traffic optimization and intelligent traffic management. Through real-time and accurate road vehicle traffic flow information, not only can we fully understand and master the current road condition information, but also use intelligent control and forecasting methods to carry out effective traffic control and traffic guidance to ensure the smooth flow of road traffic and the safety of existing roads. optimal utilization. [0003] According to the differe...

AI Technical Summary

Problems solved by technology

Its outstanding advantages are relatively mature technology and accurate vehicle counting, but the main disadvantages are that the installation process will cause great damage to the road surface, need to interrupt traffic, affect the life of the road, and be easily damaged by heavy vehicles and road surface repairs during use. The problem of low recognition rate

For the traffic flow control system based on ultrasonic, microwave, infrared and video means, in terms of detection principle, it has certain advanced and achievable, but there are problems such as high requirements for system installation conditions, great influence by environmental conditions, cost problems such as high and low reliability, which are limited in practical applications

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