Device and method for measuring traffic flow and travel speed by using infrared technology

Abstract

The invention discloses a device and method for measuring a traffic flow and a travel speed by using an infrared technology, belonging to the technical field of intelligent transportation and detection. The device comprises infrared sensors, a PLC and a terminal computer. The device further comprises uprights used for fixing the infrared sensor, wherein every two uprights are one group and are oppositely arranged, infrared sensors are arranged above and below the first group of uprights positioned in the input direction of automobiles, and infrared sensors are arranged above left uprights. According to the invention, whether automobiles pass through a tunnel can be more accurately detected, when the automobiles pass through the tunnel, the traffic flow and the travel speed can be figured out, a necessary accurate data basis is provided for safety transportation and intelligent transportation, information guarantee is provided for energy-saving illumination of the tunnel, accurate travel speed and traffic flow information before the automobiles enter the tunnel is provided for the energy-saving illumination of the tunnel, and the social benefit is remarkable; and the device has the characteristics of low cost, easy maintenance and the like, and is increased in economic benefit.

Description

technical field [0001] The invention belongs to the technical field of intelligent transportation and detection, in particular to a device and method for measuring traffic flow and speed by using infrared technology. Background technique [0002] With the expansion of inter-city traffic construction, the number and mileage of expressways and tunnels are increasing, and accurate detection of traffic flow and speed has become an important activity for correct and effective traffic management and safe driving in tunnels. [0003] At present, the common detection methods of vehicle speed include buried induction coil (or induction rod) speed measurement, radar speed measurement and so on. Among them, the method of burying the induction coil (or induction rod) for speed measurement cannot realize the detection of the vehicle type, and the construction volume is large. Once the road surface is changed or updated, the coil needs to be buried again. In addition, the maintenance work...

AI Technical Summary

Problems solved by technology

Among them, the method of burying the induction coil (or induction rod) for speed measurement cannot realize the detection of the vehicle type, and the construction volume is large. Once the road surface is changed or updated, the coil needs to be buried again. In addition, the maintenance work is large and the cost is high; the radar speed measurement is currently used It is relatively wide, but its response time is long, usually two to three seconds, and it is not suitable for traffic conditions with short intervals and fast speeds. Moreover, the installation position of the radar is difficult to accurately detect the traffic flow information of multiple heavy-duty vehicles, and It is easy to affect its detection effect on ultra-low vehicles such as sports cars

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