Research And Implementation Of Eco-driving Guidance System For Intersection

Economic driving behavior and control research has become a research hotspot in modern intelligent transportation system with the increasing environmental pollution.Frequent acceleration and deceleration and emergency stop of vehicle caused by energy waste and pollution in the intersection of the interchange.The pre-judgment model and the speed guidance method of intersection are studied in this paper based on the technology of Cooperative Vehicle Infrastructure.Then an intersection guidance system based on energy consumption priority is designed and implemented.The main research work is as follows:Firstly,the control needs of vehicle passing and energy-saving at the intersection are analyzed.And the energy-saving speed guidance system architecture is proposed based on the research of information perception and interaction mode in the environment of cooperative vehicle infrastructure.Secondly,the paper studies the relationship between fuel consumption and vehicle speed based on the fuel consumption model of driving power demands.According to the problem of blurry passing judgement,non-economic disturbance of vehicles in the intersection,a passing prediction model based on space-time constraint is designed.The energy-saving speed guidance method under different prevailing guidance strategies is studied,and the problem of acceleration discontinuity in acceleration and deceleration guidance is optimized by trigonometric function so as to obtain a smooth speed guide curve and multi-case intersection energy-saving behavior strategy.Thirdly,after the researching of above,the intersection speed guidance system of OBD information collection,DSRC information transmission and Android car terminal are designed and developed through the research on the architecture of the intersection speed guidance system.Finally,this paper builds the test scene of the intersection in the environment of cooperative vehicle infrastructure.The passing prediction model and the method of energy-saving speed guidance are tested and analyzed by means of modular verification and whole system function.The result shows that the speed guiding system can provide the driver with effective driving speed information in the case of different of speeds through the information of vehicle and infrastructure.The passing prediction model can provide the driver with access decision accurately and the method of energy-saving speed guidance can also provide dynamic speed recommendations for drivers under the condition of non-critical accelerate.Compared to the natural driving behavior,the method of speed guidance can reduce vehicle fuel consumption effectively at the intersection.