Research On Road Wet Slip Condition Detection System Based On NB-IOT Technology

In the 21st century,along with the continuous development of China’s urbanization,people travel more conveniently,but traffic problems are becoming more prominent.Especially the problem of urban road traffic is more serious,and traffic accidents caused by road slippage are increasing year by year.It is of great significance to study a road wet skid detection system.The existing road wet skid detection system has the defects of small detection coverage,high deployment cost,short data transmission distance,poor stability,and the like,and the existing wet skid detection equipment has low precision and weak anti-interference.Aiming at these problems,this paper proposes and designs a road wet-slip detection system based on narrow-band Internet of Things(NB-IOT)technology.The system is mainly composed of terminal wet-slip acquisition module that can be deployed in mesh,NB-IOT management cloud platform and web application software.The NB-IOT wireless communication technology is used to establish the communication network between the three parts,realizing the real-time detection of the key factors affecting the road slip,and analyzing and processing the detection data.The specific research contents are as follows:1.Sensor design.Through analysis,the key factors affecting the slippery condition of the road are the depth of water accumulated in rain and snow weather,the thickness of snow and the temperature.The snow detecting sensor,the standing water detecting sensor and the temperature detecting sensor are respectively designed for these three factors.A probe-based detection device is designed for snow detection.The CAV444-based tubular rainwater depth detection sensor and the 74HC165-based water surface detection sensor are designed for the water depth detection.The design of the water storage area detection sensor is designed.It is used to assist in detecting the depth of water accumulation to improve the detection accuracy;temperature detection uses the traditional DS18B20 sensor for temperature acquisition.Through experimental tests,all three sensors designed to achieve accurate and efficient data acquisition within the tolerance range.2.The design of the NB-IOT system.The road wet slip detection system based on NB-IOT technology is designed.The system hardware design is composed of the MSP430 series-based microcontroller equipped with sensors,NB-IOT wireless communication module and peripheral circuits to achieve low power consumption,high performance and high efficiency.The goal.The system software design mainly includes hardware driver software and application layer software,and the application layer software completes the database design and visual webpage design.The radial basis(RBF)neural network algorithm is used to optimize the water depth detection sensor,which improves the accuracy of sensor detection and reduces the detection error.