System and method for making decision on snow removal work

Abstract

According to the present disclosure, road surface state information (road surface frictional force) is acquired and monitored together with road surface temperature information, road surface moisture information, and road surface salt concentration information of each road to determine whether to spray a deicing agent and whether to re-spray a deicing agent as a subsequent process depending on whether to satisfy not only a road surface temperature condition, a road surface moisture condition, a road surface salt concentration condition, but also the road surface state condition of road freezing.

What is claimed is: 
     
         1 . A system for making a decision on a snow removal work, comprising:
 an information acquiring unit which is installed in each road to acquire road surface temperature information, road surface moisture information, road surface salt concentration information, and road surface state information of each road in real time;   an information monitoring unit which receives and monitors road surface temperature information, road surface moisture information, road surface salt concentration information, and road surface state information of each road acquired by the information acquiring unit, in real time; and   a decision making unit which receives a monitoring result from the information monitoring unit to determine whether to spray the deicing agent and re-spray the deicing agent depending on whether to satisfy the road surface temperature condition, the road surface moisture condition, the road surface salt condition, and the road surface state condition,   wherein when each road satisfies the road surface temperature condition and the road surface moisture condition of road freezing, the decision making unit determines to spray the deicing agent on each road and determines to respray the deicing agent based on the road surface salt concentration condition and the road surface state condition of the road freezing after spraying the deicing agent and the road surface temperature condition of the road freezing is that the road surface temperature is below zero, the road surface moisture condition is that the moisture is generated on the road surface, the road surface salt concentration condition is that a salt concentration of the deicing agent is below a salt concentration at a freezing point, and the road surface state condition is that the road surface frictional force (friction coefficient) is 0.6 or lower.   
     
     
         2 . The system for making a decision on a snow removal work according to  claim 1 , wherein the information acquiring unit includes:
 a road surface temperature information acquiring unit configured by a contact type temperature sensor which is installed on a road surface of road to measure a temperature of the road surface;   a road surface moisture information acquiring unit configured by a fog sensor, a fine dust sensor, an air temperature sensor, an atmospheric pressure sensor, air humidity sensor, a rainfall sensor, and a snowfall sensor which are installed on a pillar mounted at a road edge of each road to measures weather conditions;   a road surface salt concentration information acquiring unit configured by a salt sensor which is installed on the road surface of each road to measure a salt concentration of a deicing agent sprayed on the road surface; and   a road surface frictional force information acquiring unit configured by a road surface state sensor which is installed on a pillar mounted on the road surface edge of each road to provide a road surface friction coefficient.   
     
     
         3 . The system for making a decision on a snow removal work according to  claim 1 , wherein if a deicing agent reaction time has elapsed after spraying the deicing agent, the decision making unit determines whether to measure the road surface salt concentration from the road surface salt concentration information, and if the road surface salt concentration can be measured, determines whether to respray the deicing agent depending on whether to satisfy the road surface salt concentration condition of the road freezing, and if the road surface salt concentration cannot be measured, determines whether to respray the deicing agent depending on whether to satisfy the road surface state condition of the road freezing. 
     
     
         4 . The system for making a decision on a snow removal work according to  claim 3 , wherein when the road surface salt concentration condition of road freezing is satisfied or the road surface state condition of road freezing is satisfied, the decision making unit goes back to the process of determining to spray a deicing agent to respray the deicing agent. 
     
     
         5 . A method for making a decision on a snow removal work, comprising:
 a first step of acquiring road surface temperature information, road surface moisture information, road surface salt concentration information, and road surface state information of each road in real time;   a second step of monitoring the acquired road surface temperature information, road surface moisture information, road surface salt concentration information, and road surface state information of each road in real time; and   a third step of determining whether to spray a deicing agent on each road depending on whether to satisfy the road surface temperature condition, the road surface moisture condition, the road surface salt concentration condition, and the road surface state condition of the road freezing of each road from the monitoring result so that when each road satisfies the road surface temperature condition and the road surface moisture condition, it is determined to spray the deicing agent on each road and after spraying the deicing agent, it is determined whether to respray the deicing agent based on the road salt concentration condition and the road surface state condition of the road freezing,   wherein the road surface temperature condition of the road freezing is that the road surface temperature is below zero, the road surface moisture condition is that the moisture is generated on the road surface, the road surface salt concentration condition is that a salt concentration of the deicing agent is below a salt concentration at a freezing point, and the road surface state condition is that the road surface frictional force (friction coefficient) is 0.6 or lower.