Early warning method of secondary accidents on expressway based on big data

Abstract

The invention discloses an early warning method of secondary accidents on the expressway based on big data. The method is achieved in ways that early warning devices are arranged on expressway guardrails at intervals; when an accident occurs, an accident point early warning device near the accident place is triggered and sends accident place information to a monitoring center; the accident point early warning device triggers adjacent early warning devices; and the accident point early warning device is taken as the starting point, so the shorter the distance between the place and the startingpoint is, the stronger the early warning signal of the adjacent early warning device is. According to the invention, the beneficial effects are that accident places can be timely found; the setting distances of the early warning devices are big; less time is consumed; setting ways of the early warning devices are various; early warnings and repealing of early warnings are precise and timely; earlywarning efficiency is quite high; early warning effects are better; and probability of occurrence of secondary accidents can be effectively reduced.

Description

technical field [0001] The invention relates to a method and system for early warning of secondary accidents on expressways, in particular to a method and system for early warning of secondary accidents on expressways based on big data. Background technique [0002] At present, the status of early warning of secondary accidents at home and abroad mainly depends on some early warning equipment, such as triangle warning signs, early warning isolation belts, warning lights installed on guardrails, and intelligent guardrails. However, these early warning devices all have the following defects: 1. The situation at the accident scene cannot be sent to the relevant departments in time, resulting in the accident scene not being discovered and processed in time, prolonging the residence time of the accident point and increasing the possibility of secondary accidents ;2. The setting distance of early warning equipment is short, and the early warning effect is not good. If you want to ...

AI Technical Summary

Problems solved by technology

However, these early warning devices all have the following defects: 1. The situation at the accident scene cannot be sent to the relevant departments in time, resulting in the accident scene not being discovered and processed in time, prolonging the residence time of the accident point and increasing the possibility of secondary accidents ;2. The setting distance of early warning equipment is short, and the early warning effect is not good. If you want to extend the early warning distance, you need to pay a lot of labor and time. On the highway, it is very dangerous to stay for a long time to set up early warning equipment itself. , which increases the possibility of secondary traffic accidents; 3. The setting method of these early warning equipment is single, and the start and end of early warning are all controlled by humans. There is a risk of secondary accidents due to untimely early warning, and the existence of early warning equipment The evacuation is not timely, which affects the traffic operation; 4. The existing intelligent guardrail can only pass through the accident vehicle after hitting the guardrail. The early warning device of the intelligent guardrail receives the vibration caused by the impact, and then starts the early warning device at the corresponding position, Some existing traffic accidents will not directly hit the protective fence, so the early warning device cannot be activated. At the same time, this kind of intelligent protective fence may also vibrate under the action of other external forces, forming unnecessary early warning

Therefore, the existing early warning methods have the problems of untimely discovery of the accident scene, short distance and long time-consuming setting of the early warning device, single setting method of the early warning device, inaccurate and untimely early warning and cancellation of early warning, and cannot effectively reduce the occurrence of secondary accidents.

Images