1. A sliding mode trajectory voting strategy module comprising: a fuzzification interface inputting a road curvature information and a road risk assessment information and performing a fuzzy analysis based on a plurality of predetermined membership functions; a fuzzy inference interface integrating the road curvature information and the road risk assessment information based on a sliding mode control theory and performing a simulation on the road curvature information and the road risk assessment information to obtain a route voting result; and a defuzzification interface defuzzifing the route voting result according to a fuzzy logic rule table to obtain an orientation angle of a safe path; wherein the sliding mode control theory is utilized to integrate a reaction time and a relative distance in the road curvature information and the road risk assessment information into an obstacle feature sliding surface, the obstacle feature sliding surface S t =sign(Y t )(τ t +λd t ), wherein τ represents the reaction time, λ represents an obstacle feature constant, d represents the relative distance, Y represents a horizontal coordinate of a target obstacle, and the subscript i represents the target obstacle.