构建综合考虑车辆排放和延误的交叉口信号自动优化平台。根据机动车行驶工况变化对排放的影响,建立车辆减速、怠速、加速、匀速4种状态下的机动车排放计算模型;以减少机动车尾气排放及交叉口延误为总目标,以信号周期时长和各相位绿信比为优化参数建立信号优化模型,选择遗传算法作为优化工具,实现信号自动优化;利用Visual Basic6.0实现整个优化平台,并结合实际案例,验证合理性和实用性。 Constructs an automatic optimization platform of intersection signal considering vehicle emission and delay. According to the influence of vehicle operating conditions on emissions, a vehicle emission calculation model under four states of deceleration, idle speed, acceleration and uniform speed is established. The overall goal is to reduce vehicle exhaust emission and intersection delay, and the signal duration And the signal-to-noise ratio (SNR) of each phase are used to establish the signal optimization model for the optimization parameters. The genetic algorithm is selected as the optimization tool to optimize the signal automatically. The entire optimization platform is realized by Visual Basic 6.0 and verified with the practical case to verify the rationality and practicability.