Temperature monitoring method and system in asphalt transportation process

Abstract

The invention relates to a temperature monitoring method and system in an asphalt transportation process, and the method comprises the steps: 1, collecting a plurality of groups of data, each group of data comprising four parameters: wind speed, air temperature, outward radiation temperature of an asphalt mixture, and actual temperature of the asphalt mixture at each temperature measurement point; 2, constructing a temperature monitoring model; and 3, monitoring the temperature of the asphalt mixture in the transportation process by using the temperature monitoring model obtained in the step 2. The system comprises intelligent processing equipment, a data acquisition instrument, a non-contact infrared temperature detector, a contact temperature probe, a wind speed sensor and a thermometer, the data acquisition instrument communicates with the intelligent processing equipment, and the non-contact infrared temperature detector and the contact temperature probe are both connected with the data acquisition instrument; and the wind speed sensor and the thermometer transmit acquired data to the intelligent processing equipment. According to the method, non-contact intelligent monitoring in the transportation process is realized, and the problem that the temperature is difficult to monitor in real time in the asphalt mixture transportation process is solved.

Description

technical field [0001] The invention relates to the technical field of road construction, in particular to a method and system for monitoring temperature during asphalt transportation. Background technique [0002] Since asphalt is a viscoelastic material, various parameters and properties of asphalt are greatly affected by temperature, especially the temperature when asphalt mixture is used for paving and rolling will directly affect the paving and compaction of asphalt pavement. Substantial quantity. When the temperature is high, higher compactness and better compaction effect can be obtained with fewer rolling times, but if the rolling temperature is too high, transverse cracks or unevenness of the road surface will occur. Potholes are formed when driving; if the rolling temperature is too low, the fluidity of the asphalt mixture is too poor, the road surface is difficult to compact, and large gaps are easily formed to cause water infiltration, which reduces the cohesive...

AI Technical Summary

Problems solved by technology

However, in the existing asphalt transportation process, there is no means to monitor the asphalt temperature, and the temperature during asphalt paving and preliminary rolling may not meet the requirements for use

[0004] One of the traditional methods of measuring asphalt temperature is to use contact sensors such as probes to directly measure manually. This measurement method usually selects some points randomly and conducts spot checks. Only the temperature at a certain point can be obtained, and it cannot be measured at a deeper level The asphalt temperature cannot be obtained, and the attenuation of the asphalt temperature cannot be obtained, and the information on the asphalt temperature distribution that can be reflected is limited

The other is to install the contact sensor at a fixed position in the vehicle body, and the contact sensor measures the temperature data in real time. However, in fact, the force of loading and unloading asphalt mixture on the truck can reach three tons, and the contact sensor cannot bear this force. Very easy to damage the contact sensor or position shift, resulting in inaccurate measurement

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