724 lines
31 KiB
Python
724 lines
31 KiB
Python
from flask import Flask, jsonify, request
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import time
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import math
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import random
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import logging
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app = Flask(__name__)
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# 地球半径（米）
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EARTH_RADIUS = 6378137.0
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COMMAND_PRIORITIES = {
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"ALERT": 5,
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"SIGNAL": 4,
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"WARNING": 3,
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"GREEN": 2,
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"RESUME": 1
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}
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def meters_to_degrees(meters, latitude):
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"""
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将米转换为度，考虑纬度的影响
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"""
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# 纬度方向：1度 = 111,319.9米
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meters_per_deg_lat = 111319.9
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# 经度方向：1度 = 111,319.9 * cos(latitude)米
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meters_per_deg_lon = meters_per_deg_lat * math.cos(math.radians(latitude))
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return meters / meters_per_deg_lat, meters / meters_per_deg_lon
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# 距离配置（米）
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DIST_300M = 300
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DIST_200M = 200
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DIST_150M = 150
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DIST_100M = 100
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DIST_50M = 50
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# 两个路口的位置
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WEST_INTERSECTION = {"longitude": 120.086003, "latitude": 36.361999}
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EAST_INTERSECTION = {"longitude": 120.090003, "latitude": 36.361999}
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# 位置更新间隔（秒）
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UPDATE_INTERVAL = 1.0
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# 飞机和车辆尺寸（半径 米）
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AIRCRAFT_SIZE_M = 30.0
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VEHICLE_SIZE_M = 10.0
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# 航空器数据
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aircraft_data = [
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{
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"flightNo": "AC001", # 航空器
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"latitude": EAST_INTERSECTION["latitude"] - (DIST_150M / 111319.9), # 东路口南150米
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"longitude": EAST_INTERSECTION["longitude"],
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"time": int(time.time() * 1000),
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"direction": 1, # 1表示向北
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"speed": 50.0 # 滑行速度 50km/h
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}
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]
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# 添加默认速度常量
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DEFAULT_VEHICLE_SPEED = 36.0 # km/h
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EMERGENCY_BRAKE_DECELERATION = 0.8 # 紧急制动减速度 (每次更新减速 80%)
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NORMAL_BRAKE_DECELERATION = 0.2 # 正常制动减速度 (每次更新减速 20%)
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# 车辆数据
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vehicle_data = [
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{
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"vehicleNo": "QN001", # 无人车1（西路口）
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"latitude": WEST_INTERSECTION["latitude"] + (DIST_100M / 111319.9), # 西路口北50米
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"longitude": WEST_INTERSECTION["longitude"],
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"time": int(time.time() * 1000),
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"direction": -1, # -1表示向南
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"speed": DEFAULT_VEHICLE_SPEED, # 使用默认速度
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"phase": 0 # 0: 南北移动, 1: 东西移动
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},
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{
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"vehicleNo": "QN002", # 无人车2（东路口）
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"latitude": EAST_INTERSECTION["latitude"],
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"longitude": EAST_INTERSECTION["longitude"] - (DIST_150M / (111319.9 * math.cos(math.radians(EAST_INTERSECTION["latitude"])))), # 东路口西150米
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"time": int(time.time() * 1000),
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"direction": 1, # 1表示向东
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"speed": DEFAULT_VEHICLE_SPEED, # 使用默认速度
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"phase": 0 # 初始化 phase
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},
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{
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"vehicleNo": "TQ001", # 特勤车（西路口）
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"latitude": WEST_INTERSECTION["latitude"],
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"longitude": WEST_INTERSECTION["longitude"] + (DIST_50M / (111319.9 * math.cos(math.radians(WEST_INTERSECTION["latitude"])))), # 西路口东50米
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"time": int(time.time() * 1000),
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"direction": -1, # -1表示向西
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"speed": DEFAULT_VEHICLE_SPEED, # 使用默认速度
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"phase": 0 # 初始化 phase
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}
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]
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# 添加车辆状态类
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class VehicleState:
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def __init__(self, vehicle_no):
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self.vehicle_no = vehicle_no
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self.is_running = True # 运行状态
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self.current_command = None # 当前执行的指令
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self.command_priority = 0 # 当前指令优先级
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self.target_speed = DEFAULT_VEHICLE_SPEED # 目标速度
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self.brake_mode = None # 制动模式：'emergency' 或 'normal'
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self.command_reason = None # 指令原因
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self.last_command_time = time.time() # 最后一次指令时间
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self.traffic_light_state = None # 当前红绿灯状态
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self.target_lat = None # 目标纬度
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self.target_lon = None # 目标经度
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def can_be_overridden_by(self, command_type):
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"""判断当前指令是否可以被新指令覆盖"""
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priority_map = {
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"ALERT": 5, # 告警指令，最高优先级
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"RED": 4, # 红灯指令，次高优先级
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"WARNING": 3, # 预警指令，中等优先级
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"GREEN": 2, # 绿灯状态，低优先级
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"RESUME": 1 # 恢复指令，最低优先级
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}
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new_priority = priority_map.get(command_type, 0)
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current_priority = priority_map.get(self.current_command, 0)
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# ALERT 指令可以被 RESUME 解除
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if self.current_command == "ALERT":
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return command_type == "RESUME"
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# RED 指令可以被 GREEN 或更高优先级指令覆盖
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if self.current_command == "RED":
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return command_type == "GREEN" or new_priority > current_priority
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# WARNING 指令可以被 RESUME 解除
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if self.current_command == "WARNING":
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return command_type == "RESUME" or new_priority > current_priority
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# GREEN 不阻止任何指令
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if self.current_command == "GREEN":
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return True
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# 其他情况按优先级判断
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return new_priority >= current_priority
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def update_command(self, command_type, target_lat=None, target_lon=None):
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"""更新指令状态"""
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priority_map = {
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"ALERT": 5, # 告警指令，最高优先级
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"RED": 4, # 红灯指令，次高优先级
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"WARNING": 3, # 预警指令，中等优先级
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"GREEN": 2, # 绿灯状态，低优先级
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"RESUME": 1 # 恢复指令，最低优先级
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}
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# 更新目标位置
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if target_lat is not None and target_lon is not None:
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self.target_lat = target_lat
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self.target_lon = target_lon
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# 如果是红绿灯状态，更新状态和指令
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if command_type in ["RED", "GREEN"]:
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self.traffic_light_state = command_type
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if command_type == "RED":
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self.current_command = command_type
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self.command_priority = priority_map[command_type]
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self.is_running = False
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print(f"车辆 {self.vehicle_no} 收到红灯指令，停止运行")
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else: # GREEN
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# 清除 RED 指令
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if self.current_command == "RED":
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print(f"车辆 {self.vehicle_no} 收到绿灯指令，清除红灯指令")
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# 设置为绿灯指令
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self.current_command = command_type
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self.command_priority = priority_map[command_type]
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# 如果没有其他阻塞性指令，允许移动
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if self.current_command not in ["ALERT", "WARNING"]:
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self.is_running = True
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print(f"车辆 {self.vehicle_no} 收到绿灯指令，恢复运行")
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else:
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# 其他指令正常更新
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self.current_command = command_type
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self.command_priority = priority_map.get(command_type, 0)
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print(f"更新车辆 {self.vehicle_no} 状态: command={self.current_command}, traffic_light={self.traffic_light_state}, priority={self.command_priority}")
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def can_move(self):
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"""检查车辆是否可以移动"""
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# 如果有告警指令，不能移动
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if self.current_command == "ALERT":
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return False
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# 如果有预警指令，不能移动
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if self.current_command == "WARNING":
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return False
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# 如果是红灯且当前指令是 RED，不能移动
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if self.traffic_light_state == "RED" and self.current_command == "RED":
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return False
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# 其他情况可以移动
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return True
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def log_state(self):
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"""记录当前车辆状态"""
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print(f"""
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车辆状态:
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- 车辆编号: {self.vehicle_no}
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- 运行状态: {'运行中' if self.is_running else '已停止'}
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- 当前指令: {self.current_command}
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- 红绿灯状态: {self.traffic_light_state}
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- 指令优先级: {self.command_priority}
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- 目标速度: {self.target_speed}
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- 制动模式: {self.brake_mode}
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- 指令原因: {self.command_reason}
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- 目标位置: ({self.target_lat}, {self.target_lon})
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""")
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# 添加车辆状态管理
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vehicle_states = {}
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for vehicle in vehicle_data:
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vehicle_states[vehicle["vehicleNo"]] = VehicleState(vehicle["vehicleNo"])
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def calculate_distance_to_target(vehicle, target_lat, target_lon):
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"""计算车辆到目标位的距离（米）"""
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dlat = target_lat - vehicle["latitude"]
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dlon = target_lon - vehicle["longitude"]
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# 使用 Haversine 公式计算距离
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R = 6371000 # 地球半径（米）
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a = math.sin(dlat/2) * math.sin(dlat/2) + \
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math.cos(math.radians(vehicle["latitude"])) * math.cos(math.radians(target_lat)) * \
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math.sin(dlon/2) * math.sin(dlon/2)
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c = 2 * math.atan2(math.sqrt(a), math.sqrt(1-a))
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return R * c
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@app.route('/api/vehicle/command', methods=['POST'])
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def handle_vehicle_command():
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try:
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data = request.json
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vehicle_id = data.get("vehicleId")
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command_type = data.get("type", "").upper()
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reason = data.get("reason", "").upper()
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signal_state = data.get("signalState", "").upper()
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target_lat = data.get("latitude", None)
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target_lon = data.get("longitude", None)
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print(f"收到车辆控制指令: vehicle_id={vehicle_id}, type={command_type}, reason={reason}, signal_state={signal_state}")
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print(f"完整请求数据: {data}")
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# 将 SIGNAL 指令转换为 RED 或 GREEN
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if command_type == "SIGNAL":
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command_type = "RED" if signal_state == "RED" else "GREEN"
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print(f"转换 SIGNAL 指令为: {command_type}")
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# 检查车辆是否存在
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vehicle_state = vehicle_states.get(vehicle_id)
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if not vehicle_state:
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print(f"未找到车辆: {vehicle_id}")
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return jsonify({
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"status": "error",
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"message": f"Vehicle {vehicle_id} not found"
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}), 404
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# 打印当前车辆状态
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print(f"当前车辆状态: vehicle={vehicle_id}")
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vehicle_state.log_state()
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# 特勤车只响应红绿灯信号
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if vehicle_id.startswith("TQ"):
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if command_type not in ["RED", "GREEN"]:
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print(f"特勤车辆忽略非红绿灯指令: {vehicle_id}")
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return jsonify({
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"status": "ok",
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"message": "Special vehicle only responds to traffic light signals"
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})
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# 更新红绿灯状态和指令状态
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vehicle_state.update_command(command_type, target_lat, target_lon)
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print(f"特勤车 {vehicle_id} 更新状态: command={command_type}, traffic_light={vehicle_state.traffic_light_state}")
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return jsonify({
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"status": "ok",
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"message": "Traffic light state updated"
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})
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# 检查指令优先级并添加详细日志
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can_override = vehicle_state.can_be_overridden_by(command_type)
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print(f"指令优先级检查: vehicle={vehicle_id}, current_command={vehicle_state.current_command}, "
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f"new_command={command_type}, can_override={can_override}")
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if not can_override:
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print(f"指令优先级过低: vehicle={vehicle_id}, current_priority={vehicle_state.command_priority}, "
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f"command={command_type}")
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return jsonify({
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"status": "warning",
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"message": "Command priority too low"
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})
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# 处理不同类型的指令
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if command_type in ["ALERT", "WARNING"]:
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# 查找当前车辆
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current_vehicle = None
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for v in vehicle_data:
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if v["vehicleNo"] == vehicle_id:
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current_vehicle = v
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break
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# 执行告警指令，直接停车
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print(f"执行{'紧急' if command_type == 'ALERT' else '正常'}制动: vehicle={vehicle_id}")
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vehicle_state.current_command = command_type
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vehicle_state.command_priority = COMMAND_PRIORITIES.get(command_type, 0)
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vehicle_state.is_running = False
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vehicle_state.target_speed = 0
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vehicle_state.brake_mode = "emergency" if command_type == "ALERT" else "normal"
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vehicle_state.target_lat = target_lat
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vehicle_state.target_lon = target_lon
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# 立即更新车辆速度
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current_vehicle["speed"] = 0
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elif command_type in ["RED", "GREEN"]:
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print(f"执行红绿灯指令: vehicle_id={vehicle_id}, state={command_type}")
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# 红绿灯状态的更新由 update_command 处理
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pass
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elif command_type == "RESUME":
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print(f"执行恢复指令: vehicle_id={vehicle_id}")
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# 检查当前车辆
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current_vehicle = None
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for v in vehicle_data:
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if v["vehicleNo"] == vehicle_id:
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current_vehicle = v
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break
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# 清除限制性指令
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if vehicle_state.current_command in ["ALERT", "WARNING"]:
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print(f"清除限制性指令: vehicle={vehicle_id}")
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vehicle_state.current_command = None
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vehicle_state.command_priority = 0
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vehicle_state.is_running = True
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vehicle_state.target_speed = DEFAULT_VEHICLE_SPEED
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vehicle_state.brake_mode = None
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vehicle_state.target_lat = None
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vehicle_state.target_lon = None
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# 更新车辆运行状态
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vehicle_state.is_running = vehicle_state.can_move()
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if vehicle_state.is_running:
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print(f"车辆 {vehicle_id} 恢复运行")
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current_vehicle["speed"] = DEFAULT_VEHICLE_SPEED
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# 记录状态变化但不更新指令
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vehicle_state.command_reason = reason
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vehicle_state.last_command_time = time.time()
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print(f"Vehicle {vehicle_id} state updated: running={vehicle_state.is_running}, "
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f"command={vehicle_state.current_command}, traffic_light={vehicle_state.traffic_light_state}, "
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f"reason={reason}, priority={vehicle_state.command_priority}, "
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f"target_speed={vehicle_state.target_speed}, brake_mode={vehicle_state.brake_mode}")
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return jsonify({
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"status": "ok",
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"message": "Command executed successfully"
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})
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# 更新车辆状态
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vehicle_state.update_command(command_type, target_lat, target_lon)
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vehicle_state.command_reason = reason
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vehicle_state.last_command_time = time.time()
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# 更新车辆运行状态
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vehicle_state.is_running = vehicle_state.can_move()
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if not vehicle_state.is_running:
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vehicle_state.target_speed = 0
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print(f"Vehicle {vehicle_id} state updated: running={vehicle_state.is_running}, "
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f"command={vehicle_state.current_command}, traffic_light={vehicle_state.traffic_light_state}, "
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f"reason={reason}, priority={vehicle_state.command_priority}, "
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f"target_speed={vehicle_state.target_speed}, brake_mode={vehicle_state.brake_mode}")
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return jsonify({
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"status": "ok",
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"message": "Command executed successfully"
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})
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except Exception as e:
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print(f"Error handling vehicle command: {str(e)}")
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return jsonify({
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"status": "error",
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"message": str(e)
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}), 500
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def calculate_distance_to_intersection(vehicle, intersection):
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"""计算车辆到路口的距离（米）"""
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vehicle_lat = vehicle["latitude"]
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vehicle_lon = vehicle["longitude"]
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intersection_lat = intersection["latitude"]
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intersection_lon = intersection["longitude"]
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# 使用经纬度计算距离
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lat_diff = (vehicle_lat - intersection_lat) * 111319.9
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lon_diff = (vehicle_lon - intersection_lon) * (111319.9 * math.cos(math.radians(vehicle_lat)))
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return math.sqrt(lat_diff * lat_diff + lon_diff * lon_diff)
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def get_nearest_intersection(vehicle):
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"""获取车辆最近的路口及其红绿灯状态"""
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west_dist = calculate_distance_to_intersection(vehicle, WEST_INTERSECTION)
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east_dist = calculate_distance_to_intersection(vehicle, EAST_INTERSECTION)
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if west_dist <= east_dist:
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return WEST_INTERSECTION, traffic_light_data[0], west_dist # TL001
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else:
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return EAST_INTERSECTION, traffic_light_data[1], east_dist # TL002
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def get_front_traffic_light(vehicle, distance_to_west, distance_to_east):
|
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"""获取车辆前方的红绿灯状态"""
|
||
# 根据车辆的位置和方向判断前方路口
|
||
if vehicle["vehicleNo"] == "QN001":
|
||
# 确保 phase 属性存在
|
||
if "phase" not in vehicle:
|
||
vehicle["phase"] = 0
|
||
|
||
# QN001 的路线：西路口北侧 -> 东 -> 北
|
||
if vehicle["phase"] == 0: # 南北移动
|
||
# 在西路口以南时，向北移动需要判断西路口红绿灯
|
||
if vehicle["direction"] == 1 and vehicle["latitude"] < WEST_INTERSECTION["latitude"]:
|
||
return traffic_light_data[0], distance_to_west # 西路口红绿灯
|
||
# 在西路口以北时，向南移动需要判断西路口红绿灯
|
||
elif vehicle["direction"] == -1 and vehicle["latitude"] > WEST_INTERSECTION["latitude"]:
|
||
return traffic_light_data[0], distance_to_west # 西路口红绿灯
|
||
else: # 东西移动
|
||
# 在西路口以西时，向东移动需要判断西路口红绿灯
|
||
if vehicle["direction"] == 1 and vehicle["longitude"] < WEST_INTERSECTION["longitude"]:
|
||
return traffic_light_data[0], distance_to_west # 西路口红绿灯
|
||
# 在西路口以东时，向西移动需要判断西路口红绿灯
|
||
elif vehicle["direction"] == -1 and vehicle["longitude"] > WEST_INTERSECTION["longitude"]:
|
||
return traffic_light_data[0], distance_to_west # 西路口红绿灯
|
||
|
||
elif vehicle["vehicleNo"] == "QN002":
|
||
# 在东路口以西时，向东移动需要判断东路口红绿灯
|
||
if vehicle["direction"] == 1 and vehicle["longitude"] < EAST_INTERSECTION["longitude"]:
|
||
return traffic_light_data[1], distance_to_east # 东路口红绿灯
|
||
# 在东路口以东时，向西移动需要判断东路口红绿灯
|
||
elif vehicle["direction"] == -1 and vehicle["longitude"] > EAST_INTERSECTION["longitude"]:
|
||
return traffic_light_data[1], distance_to_east # 东路口红绿灯
|
||
|
||
# 其他情况，表示车辆已经通过路口或不需要判断红绿灯
|
||
return None, float('inf')
|
||
|
||
def update_vehicle_position(vehicle, elapsed_time):
|
||
"""更新车辆位置"""
|
||
# 获取车辆状态
|
||
vehicle_state = vehicle_states.get(vehicle["vehicleNo"])
|
||
if not vehicle_state:
|
||
return
|
||
|
||
# 确保所有车辆都有 phase 属性
|
||
if "phase" not in vehicle:
|
||
vehicle["phase"] = 0
|
||
print(f"初始化车辆 {vehicle['vehicleNo']} 的 phase 属性为 0")
|
||
|
||
# 获取前方红绿灯状态和距离
|
||
traffic_light, distance = get_front_traffic_light(vehicle,
|
||
calculate_distance_to_intersection(vehicle, WEST_INTERSECTION),
|
||
calculate_distance_to_intersection(vehicle, EAST_INTERSECTION))
|
||
|
||
# 特勤车只响应红绿灯
|
||
if vehicle["vehicleNo"].startswith("TQ"):
|
||
# 红灯且距离停止线小于等于 50 米时停车
|
||
if traffic_light and traffic_light["state"] == 0 and distance <= DIST_50M:
|
||
vehicle["speed"] = 0
|
||
print(f"特勤车 {vehicle['vehicleNo']} 遇红灯在停止线前停车，距路口 {distance:.1f}米")
|
||
return
|
||
# 其他情况正常行驶
|
||
vehicle["speed"] = DEFAULT_VEHICLE_SPEED
|
||
print(f"特勤车 {vehicle['vehicleNo']} 正常行驶，速度={vehicle['speed']}km/h")
|
||
else:
|
||
# 普通车辆的移动逻辑
|
||
# 先判断是否在红灯影响范围内（50米）
|
||
if traffic_light and traffic_light["state"] == 0 and distance <= DIST_50M:
|
||
# 在红灯影响范围内，检查是否需要停车
|
||
if not vehicle_state.can_move():
|
||
vehicle["speed"] = 0
|
||
print(f"车辆 {vehicle['vehicleNo']} 遇红灯在停止线前停车，距路口 {distance:.1f}米")
|
||
return
|
||
else:
|
||
# 不在红灯影响范围内，只检查其他指令
|
||
if vehicle_state.current_command in ["ALERT", "WARNING"]:
|
||
vehicle["speed"] = 0
|
||
print(f"车辆 {vehicle['vehicleNo']} 不能移动: command={vehicle_state.current_command}")
|
||
return
|
||
|
||
# 可以移动，设置正常速度
|
||
vehicle["speed"] = DEFAULT_VEHICLE_SPEED
|
||
print(f"车辆 {vehicle['vehicleNo']} 可以移动，速度={vehicle['speed']}km/h")
|
||
|
||
# 计算基础速度（米/秒）
|
||
base_speed_mps = vehicle["speed"] * 1000 / 3600
|
||
|
||
# 计算移动距离
|
||
distance = base_speed_mps * elapsed_time
|
||
|
||
# 计算经纬度变化
|
||
dlat, dlon = meters_to_degrees(distance, vehicle["latitude"])
|
||
|
||
# 更新位置
|
||
if vehicle["vehicleNo"].startswith("QN"):
|
||
# 无人车的路径更新逻辑
|
||
if vehicle["vehicleNo"] == "QN001":
|
||
# 无人车1：先南北后东西往返
|
||
if vehicle["phase"] == 0: # 南北移动
|
||
new_lat = vehicle["latitude"] + (dlat * vehicle["direction"])
|
||
if vehicle["direction"] == -1 and new_lat <= WEST_INTERSECTION["latitude"]:
|
||
# 到达路口，切换到东西移动
|
||
vehicle["phase"] = 1
|
||
vehicle["direction"] = 1 # 向东
|
||
print(f"QN001 到达西路口，切换到东西移动，方向=东")
|
||
elif vehicle["direction"] == 1 and new_lat >= WEST_INTERSECTION["latitude"] + (DIST_50M / 111319.9):
|
||
# 返回起点
|
||
vehicle["phase"] = 0
|
||
vehicle["direction"] = -1 # 向南
|
||
print(f"QN001 到达北端，切换到南北移动，方向=南")
|
||
vehicle["latitude"] = new_lat
|
||
print(f"QN001 南北移动: lat={new_lat}, direction={vehicle['direction']}")
|
||
|
||
else: # 东西移动
|
||
new_lon = vehicle["longitude"] + (dlon * vehicle["direction"])
|
||
if vehicle["direction"] == 1 and new_lon >= WEST_INTERSECTION["longitude"] + (DIST_100M / (111319.9 * math.cos(math.radians(vehicle["latitude"])))):
|
||
# 到达东端，开始返回
|
||
vehicle["direction"] = -1 # 向西
|
||
print(f"QN001 到达东端，切换方向=西")
|
||
elif vehicle["direction"] == -1 and new_lon <= WEST_INTERSECTION["longitude"]:
|
||
# 返回路口，切换到南北移动
|
||
vehicle["phase"] = 0
|
||
vehicle["direction"] = 1 # 向北
|
||
print(f"QN001 返回西路口，切换到南北移动，方向=北")
|
||
vehicle["longitude"] = new_lon
|
||
print(f"QN001 东西移动: lon={new_lon}, direction={vehicle['direction']}")
|
||
|
||
else: # QN002
|
||
# 无人车2：西向往返（西路口）
|
||
new_lon = vehicle["longitude"] + (dlon * vehicle["direction"])
|
||
if new_lon >= EAST_INTERSECTION["longitude"] + (DIST_150M / (111319.9 * math.cos(math.radians(vehicle["latitude"])))):
|
||
vehicle["direction"] = -1 # 向西
|
||
print(f"QN002 到达东端，切换方向=西")
|
||
elif new_lon <= EAST_INTERSECTION["longitude"] - (DIST_150M / (111319.9 * math.cos(math.radians(vehicle["latitude"])))):
|
||
vehicle["direction"] = 1 # 向东
|
||
print(f"QN002 到达西端，切换方向=东")
|
||
vehicle["longitude"] = new_lon
|
||
print(f"QN002 东西移动: lon={new_lon}, direction={vehicle['direction']}")
|
||
|
||
elif vehicle["vehicleNo"].startswith("TQ"):
|
||
# 特勤车的路径更新逻辑
|
||
if vehicle["phase"] == 0: # 东西移动
|
||
new_lon = vehicle["longitude"] + (dlon * vehicle["direction"])
|
||
if vehicle["direction"] == -1 and new_lon <= WEST_INTERSECTION["longitude"]:
|
||
vehicle["phase"] = 1 # 切换到南北移动
|
||
vehicle["direction"] = -1 # 向南
|
||
print(f"TQ001 到达西路口，切换到南北移动，方向=南")
|
||
elif vehicle["direction"] == 1 and new_lon >= WEST_INTERSECTION["longitude"] + (DIST_50M / (111319.9 * math.cos(math.radians(vehicle["latitude"])))):
|
||
vehicle["direction"] = -1 # 向西
|
||
print(f"TQ001 到达东端，切换方向=西")
|
||
vehicle["longitude"] = new_lon
|
||
print(f"TQ001 东西移动: lon={new_lon}, direction={vehicle['direction']}")
|
||
else: # 南北移动
|
||
new_lat = vehicle["latitude"] + (dlat * vehicle["direction"])
|
||
if new_lat <= WEST_INTERSECTION["latitude"] - (DIST_100M / 111319.9): # 到达南端
|
||
vehicle["direction"] = 1 # 向北
|
||
print(f"TQ001 到达南端，切换方向=北")
|
||
elif new_lat >= WEST_INTERSECTION["latitude"]: # 返回路口
|
||
vehicle["phase"] = 0 # 切换回东西移动
|
||
vehicle["direction"] = 1 # 向东
|
||
vehicle["longitude"] = WEST_INTERSECTION["longitude"] # 重置到起始位置
|
||
print(f"TQ001 返回西路口，切换到东西移动，方向=东")
|
||
vehicle["latitude"] = new_lat
|
||
print(f"TQ001 南北移动: lat={new_lat}, direction={vehicle['direction']}")
|
||
|
||
# 新时间戳
|
||
vehicle["time"] = int(time.time() * 1000)
|
||
|
||
def update_aircraft_position(aircraft, elapsed_time):
|
||
"""更新航空器位置"""
|
||
# 计算一次更新的动距离（米）
|
||
speed_mps = aircraft["speed"] * 1000 / 3600 # 速度转换为米/秒
|
||
distance = speed_mps * elapsed_time
|
||
|
||
# 计算经纬度变化
|
||
dlat, dlon = meters_to_degrees(distance, aircraft["latitude"])
|
||
|
||
new_lat = aircraft["latitude"] + (dlat * aircraft["direction"])
|
||
if new_lat >= EAST_INTERSECTION["latitude"] + (DIST_150M / 111319.9):
|
||
aircraft["direction"] = -1 # 向南
|
||
elif new_lat <= EAST_INTERSECTION["latitude"] - (DIST_150M / 111319.9):
|
||
aircraft["direction"] = 1 # 向北
|
||
aircraft["latitude"] = new_lat
|
||
|
||
# 定义路口信息
|
||
INTERSECTIONS = {
|
||
"TL001": {
|
||
"id": "INT001",
|
||
"name": "西路口",
|
||
"latitude": WEST_INTERSECTION["latitude"],
|
||
"longitude": WEST_INTERSECTION["longitude"]
|
||
},
|
||
"TL002": {
|
||
"id": "INT002",
|
||
"name": "东路口",
|
||
"latitude": EAST_INTERSECTION["latitude"],
|
||
"longitude": EAST_INTERSECTION["longitude"]
|
||
}
|
||
}
|
||
|
||
def generate_traffic_light_data():
|
||
"""生成红绿灯数据"""
|
||
traffic_light_data = []
|
||
|
||
# 生成两个固定路口的红绿灯数据
|
||
for tl_id, intersection in INTERSECTIONS.items():
|
||
signal = {
|
||
"id": tl_id,
|
||
"state": 1, # 0: RED, 1: GREEN，测试时保持绿灯
|
||
"timestamp": int(time.time() * 1000),
|
||
"intersection": intersection["id"],
|
||
"position": {
|
||
"latitude": intersection["latitude"],
|
||
"longitude": intersection["longitude"]
|
||
}
|
||
}
|
||
traffic_light_data.append(signal)
|
||
|
||
return traffic_light_data
|
||
|
||
# 红绿灯数据
|
||
traffic_light_data = generate_traffic_light_data()
|
||
|
||
# 分别记录航空器和车辆的上次更新时间
|
||
last_aircraft_update_time = time.time()
|
||
last_vehicle_update_time = time.time()
|
||
last_light_switch_time = time.time()
|
||
|
||
@app.route('/api/getCurrentFlightPositions')
|
||
def get_flight_positions():
|
||
global last_aircraft_update_time
|
||
current_time = time.time()
|
||
elapsed_time = current_time - last_aircraft_update_time
|
||
|
||
# 只在达到更新间隔时更新位置
|
||
if elapsed_time >= UPDATE_INTERVAL:
|
||
for aircraft in aircraft_data:
|
||
update_aircraft_position(aircraft, UPDATE_INTERVAL)
|
||
aircraft["time"] = int(current_time * 1000)
|
||
last_aircraft_update_time = current_time
|
||
|
||
return jsonify(aircraft_data)
|
||
|
||
def switch_traffic_light_state():
|
||
"""统一处理红绿灯状态切换"""
|
||
global last_light_switch_time
|
||
current_time = time.time()
|
||
|
||
# 西路口红绿灯每15秒切换一次
|
||
elapsed_since_switch = current_time - last_light_switch_time
|
||
if elapsed_since_switch >= 15:
|
||
traffic_light_data[0]["state"] = 1 if traffic_light_data[0]["state"] == 0 else 0
|
||
last_light_switch_time = current_time
|
||
print(f"西路口红绿灯状态切换为: {'绿灯' if traffic_light_data[0]['state'] == 1 else '红灯'}")
|
||
|
||
# 更新东路口红绿灯（根据航空器位置）
|
||
if aircraft_data:
|
||
aircraft = aircraft_data[0]
|
||
lat_diff = abs(aircraft["latitude"] - EAST_INTERSECTION["latitude"]) * 111319.9
|
||
|
||
old_state = traffic_light_data[1]["state"]
|
||
traffic_light_data[1]["state"] = 1 if lat_diff > (AIRCRAFT_SIZE_M + DIST_50M) else 0
|
||
|
||
if old_state != traffic_light_data[1]["state"]:
|
||
print(f"东路口红绿灯状态切换为: {'绿灯' if traffic_light_data[1]['state'] == 1 else '红灯'}")
|
||
|
||
@app.route('/api/getCurrentVehiclePositions')
|
||
def get_vehicle_positions():
|
||
global last_vehicle_update_time
|
||
current_time = time.time()
|
||
elapsed_time = current_time - last_vehicle_update_time
|
||
|
||
try:
|
||
# 统一处理红绿灯状态切换
|
||
switch_traffic_light_state()
|
||
|
||
# 只在达到更新间隔时更新位置
|
||
if elapsed_time >= UPDATE_INTERVAL:
|
||
for vehicle in vehicle_data:
|
||
update_vehicle_position(vehicle, UPDATE_INTERVAL)
|
||
vehicle["time"] = int(current_time * 1000)
|
||
last_vehicle_update_time = current_time
|
||
|
||
return jsonify(vehicle_data)
|
||
|
||
except Exception as e:
|
||
print(f"Error in get_vehicle_positions: {str(e)}")
|
||
return jsonify({"error": str(e)}), 500
|
||
|
||
@app.route('/api/getTrafficLightSignals')
|
||
def get_traffic_light_signals():
|
||
current_time = time.time()
|
||
|
||
# 更新时间戳
|
||
for light in traffic_light_data:
|
||
light["timestamp"] = int(current_time * 1000)
|
||
|
||
# 统一处理红绿灯状态切换
|
||
switch_traffic_light_state()
|
||
|
||
return jsonify(traffic_light_data)
|
||
|
||
@app.after_request
|
||
def add_cors_headers(response):
|
||
response.headers['Access-Control-Allow-Origin'] = '*'
|
||
response.headers['Access-Control-Allow-Headers'] = 'Content-Type'
|
||
response.headers['Access-Control-Allow-Methods'] = 'GET, POST, OPTIONS'
|
||
return response
|
||
|
||
def check_vehicle_states():
|
||
"""定期检查所有车辆状态"""
|
||
for vehicle_no, state in vehicle_states.items():
|
||
state.log_state()
|
||
|
||
if __name__ == '__main__':
|
||
app.run(host='localhost', port=8081, debug=True) |