mqtt当前位置：'position_x': 109.30082456920857, 'position_y': 200.45750181311485


                # 导航数据
                "navigation": [
                    {
                        'type': 'forward',
                        'nav_coordinates': [
                            {
                                'start_point_x': 109.30082456920857,  # mqtt中获取当前位置
                                'start_point_y': 200.45750181311485,  # mqtt中获取当前位置
                                'end_point_x': 18.618844,
                                'end_point_y': 200.67567
                            },
                            {
                                'start_point_x': 18.618844,
                                'start_point_y': 200.67567,
                                'center_point_x': 18.306224428571426,
                                'center_point_y': 186.9142662857143,
                                'end_point_x': 17.993604857142852,
                                'end_point_y': 173.15286257142859
                            },
                            {
                                'start_point_x': 17.993604857142852,
                                'start_point_y': 173.15286257142859,
                                'end_point_x': 47.9858831368238,
                                'end_point_y': 172.47224256424514
                            }
                        ]
                    }
                ]