node-red-node-rdk-tools
Version:
配合RDK硬件及TROS使用的Node-RED功能包(Node-RED nodes for using TROS on a RDK hardware and TROS)
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[
{
"id": "mobilenet_unet_tab",
"type": "tab",
"label": "MobileNet_UNet 语义分割",
"disabled": false,
"info": "# MobileNet_UNet 语义分割\n\n## 功能介绍\n\nMobileNet_UNet语义分割算法,支持USB摄像头拍照、USB视频流和MIPI视频流三种模式。\n\n## 使用流程\n\n### 模式1:USB拍照分割\n1. **拍照**:点击\"📷 USB摄像头拍照\"按钮\n2. **自动分割**:系统会自动对照片进行MobileNet_UNet分割\n3. **查看结果**:分割结果会直接显示在Node-RED编辑器中\n\n### 模式2:USB视频流分割(实时)\n1. **启动视频流**:点击\"🎥 USB摄像头视频流\"按钮\n2. **查看可视化**:点击\"打开可视化页面\"在浏览器中查看实时分割结果\n3. **停止服务**:完成后点击\"停止所有服务\"\n\n### 模式3:MIPI视频流分割(实时)\n1. **启动视频流**:点击\"📹 MIPI摄像头视频流\"按钮\n2. **查看可视化**:点击\"打开可视化页面\"在浏览器中查看实时分割结果\n3. **停止服务**:完成后点击\"停止所有服务\"\n\n## 支持平台\n\n- RDK X5\n- RDK S100\n- RDK X3\n\n## 核心通信配置\n\n### WebSocket视频流\n- **视频流地址**: `http://{host}:8000`\n- **图像Topic**: `/image` (JPEG编码的图像流)\n- **性能**: 实时检测,延迟低\n\n## 注意事项\n\n- 拍照模式的分割结果会自动保存到 `/tmp/mobilenet_unet/` 目录\n- 视频流模式需要先启动视频流,再打开可视化页面\n- 分割过程需要几秒钟时间,请耐心等待",
"env": []
},
{
"id": "comment_photo_section",
"type": "comment",
"z": "mobilenet_unet_tab",
"name": "📷 拍照分割流程",
"info": "点击拍照按钮,系统会自动进行分割并显示结果",
"x": 150,
"y": 40,
"wires": []
},
{
"id": "inject_take_photo",
"type": "inject",
"z": "mobilenet_unet_tab",
"name": "📷 USB摄像头拍照",
"props": [
{
"p": "payload"
},
{
"p": "topic",
"vt": "str"
}
],
"repeat": "",
"crontab": "",
"once": false,
"onceDelay": 0.1,
"topic": "",
"payload": "",
"payloadType": "date",
"x": 140,
"y": 100,
"wires": [
[
"rdk_camera_take_photo"
]
]
},
{
"id": "rdk_camera_take_photo",
"type": "rdk-camera takephoto",
"z": "mobilenet_unet_tab",
"cameratype": "1",
"filemode": "2",
"filename": "photo.jpg",
"filedefpath": "0",
"filepath": "/tmp/mobilenet_unet",
"fileformat": "jpeg",
"resolution": "2",
"rotation": "0",
"fliph": "0",
"flipv": "0",
"brightness": "50",
"contrast": "0",
"sharpness": "0",
"quality": "80",
"imageeffect": "none",
"exposuremode": "auto",
"iso": "0",
"agcwait": "1.0",
"led": "0",
"awb": "auto",
"name": "拍照",
"x": 350,
"y": 100,
"wires": [
[
"debug_camera_output",
"function_prepare_segmentation"
]
]
},
{
"id": "debug_camera_output",
"type": "debug",
"z": "mobilenet_unet_tab",
"name": "调试:拍照节点输出",
"active": true,
"tosidebar": true,
"console": false,
"tostatus": false,
"complete": "true",
"targetType": "full",
"x": 550,
"y": 60,
"wires": []
},
{
"id": "debug_prepare_seg",
"type": "debug",
"z": "mobilenet_unet_tab",
"name": "调试:准备分割",
"active": true,
"tosidebar": true,
"console": false,
"tostatus": false,
"complete": "true",
"targetType": "full",
"x": 750,
"y": 60,
"wires": []
},
{
"id": "function_prepare_segmentation",
"type": "function",
"z": "mobilenet_unet_tab",
"name": "准备分割",
"func": "// 确保目录存在并获取照片路径\n// fs 和 path 已在 libs 中声明,直接使用\nconst saveDir = '/tmp/mobilenet_unet';\n\n// 确保目录存在\nif (!fs.existsSync(saveDir)) {\n fs.mkdirSync(saveDir, { recursive: true });\n}\n\n// rdk-camera takephoto节点会在msg.payload中返回实际保存的文件路径\n// 例如: \"/tmp/mobilenet_unet/image-20251121-154610.jpg\"\nlet photoPath = null;\nlet photoFileName = null;\n\n// 优先使用msg.payload中的文件路径(字符串)\nif (msg.payload && typeof msg.payload === 'string' && msg.payload.trim()) {\n photoPath = msg.payload.trim();\n \n // 检查文件是否存在\n if (fs.existsSync(photoPath)) {\n photoFileName = path.basename(photoPath);\n node.status({ fill: 'green', shape: 'dot', text: '照片: ' + photoFileName });\n \n // 文件存在,直接使用\n msg.photoPath = photoPath;\n msg.photoFileName = photoFileName;\n msg.photoDir = saveDir;\n \n return msg;\n } else {\n // 文件不存在,等待一下(最多2.5秒)\n const self = node;\n let retryCount = 0;\n const maxRetries = 5;\n \n const checkFile = function() {\n if (fs.existsSync(photoPath)) {\n const newMsg = {\n photoPath: photoPath,\n photoFileName: path.basename(photoPath),\n photoDir: saveDir\n };\n self.status({ fill: 'green', shape: 'dot', text: '照片已找到' });\n self.send(newMsg);\n } else if (retryCount < maxRetries) {\n retryCount++;\n setTimeout(checkFile, 500);\n } else {\n self.error('照片文件不存在: ' + photoPath);\n self.status({ fill: 'red', shape: 'dot', text: '照片不存在' });\n }\n };\n \n setTimeout(checkFile, 500);\n return null;\n }\n} else if (msg.payload && Buffer.isBuffer(msg.payload)) {\n // 如果payload是Buffer,保存到指定目录\n photoFileName = 'photo.jpg';\n photoPath = path.join(saveDir, photoFileName);\n try {\n fs.writeFileSync(photoPath, msg.payload);\n node.status({ fill: 'green', shape: 'dot', text: '照片已保存' });\n \n msg.photoPath = photoPath;\n msg.photoFileName = photoFileName;\n msg.photoDir = saveDir;\n \n return msg;\n } catch (err) {\n node.error('保存照片失败: ' + err.message);\n return null;\n }\n} else {\n // 如果都没有,尝试使用默认路径\n photoFileName = 'photo.jpg';\n photoPath = path.join(saveDir, photoFileName);\n if (!fs.existsSync(photoPath)) {\n node.error('无法找到照片文件,请检查拍照节点配置');\n node.status({ fill: 'red', shape: 'dot', text: '照片不存在' });\n return null;\n }\n node.status({ fill: 'green', shape: 'dot', text: '使用默认路径' });\n \n msg.photoPath = photoPath;\n msg.photoFileName = photoFileName;\n msg.photoDir = saveDir;\n \n return msg;\n}",
"outputs": 1,
"noerr": 0,
"initialize": "",
"finalize": "",
"libs": [
{
"var": "fs",
"module": "fs"
},
{
"var": "path",
"module": "path"
}
],
"x": 550,
"y": 100,
"wires": [
[
"debug_prepare_seg",
"function_build_seg_command"
]
]
},
{
"id": "function_build_seg_command",
"type": "function",
"z": "mobilenet_unet_tab",
"name": "构建分割命令",
"func": "// 构建分割命令\n// 根据官方文档:本地图片回灌使用 dnn_node_example_feedback.launch.py\n// 官方示例:ros2 launch dnn_node_example dnn_node_example_feedback.launch.py dnn_example_config_file:=config/mobilenet_unet_workconfig.json dnn_example_image:=config/test.jpg\n// 注意:dnn_example_image 参数是相对于工作目录的路径\n// 渲染结果保存在运行路径下,命名格式:render_frameid_时间戳秒_时间戳纳秒.jpg\nconst photoDir = msg.photoDir || '/tmp/mobilenet_unet';\nconst photoFileName = msg.photoFileName || 'photo.jpg';\n\n// 确保图片文件在工作目录下(如果不在,需要复制)\n// 构建完整的launch命令\n// 工作目录设置为 photoDir,图片文件应该在 photoDir 下\nconst pwdCmd = 'pwd';\nmsg.payload = 'cd ' + photoDir + ' && source /opt/tros/humble/setup.bash && cp -r /opt/tros/humble/lib/dnn_node_example/config/ . 2>/dev/null || true && echo \"=== 开始MobileNet_UNet分割 ===\" && echo \"工作目录: $(pwd)\" && echo \"图片文件: ' + photoFileName + '\" && echo \"检查图片是否存在...\" && ls -lh ' + photoFileName + ' 2>&1 && echo \"启动分割...\" && ros2 launch dnn_node_example dnn_node_example_feedback.launch.py dnn_example_config_file:=config/mobilenet_unet_workconfig.json dnn_example_image:=' + photoFileName + ' dnn_example_dump_render_img:=1';\n\nnode.status({ fill: 'blue', shape: 'dot', text: '命令已构建' });\nreturn msg;",
"outputs": 1,
"noerr": 0,
"initialize": "",
"finalize": "",
"libs": [],
"x": 750,
"y": 100,
"wires": [
[
"debug_build_command",
"exec_start_segmentation"
]
]
},
{
"id": "debug_build_command",
"type": "debug",
"z": "mobilenet_unet_tab",
"name": "调试:构建的命令",
"active": true,
"tosidebar": true,
"console": false,
"tostatus": false,
"complete": "payload",
"targetType": "msg",
"x": 950,
"y": 60,
"wires": []
},
{
"id": "exec_start_segmentation",
"type": "exec",
"z": "mobilenet_unet_tab",
"name": "启动分割",
"command": "",
"addpay": true,
"append": "",
"useSpawn": true,
"timer": "0",
"oldrc": false,
"x": 950,
"y": 100,
"wires": [
[
"debug_seg_output",
"function_wait_and_refresh"
],
[
"debug_seg_error"
],
[]
]
},
{
"id": "debug_seg_output",
"type": "debug",
"z": "mobilenet_unet_tab",
"name": "分割输出",
"active": true,
"tosidebar": true,
"console": false,
"tostatus": true,
"complete": "payload",
"targetType": "msg",
"statusVal": "payload",
"statusType": "auto",
"x": 1180,
"y": 80,
"wires": []
},
{
"id": "debug_seg_error",
"type": "debug",
"z": "mobilenet_unet_tab",
"name": "分割错误",
"active": true,
"tosidebar": true,
"console": false,
"tostatus": false,
"complete": "payload",
"targetType": "msg",
"x": 1180,
"y": 120,
"wires": []
},
{
"id": "comment_video_section",
"type": "comment",
"z": "mobilenet_unet_tab",
"name": "🎥 USB视频流分割流程",
"info": "启动USB摄像头实时视频流,进行连续分割",
"x": 150,
"y": 200,
"wires": []
},
{
"id": "inject_usb_video",
"type": "inject",
"z": "mobilenet_unet_tab",
"name": "🎥 USB摄像头视频流",
"props": [
{
"p": "payload"
},
{
"p": "topic",
"vt": "str"
}
],
"repeat": "",
"crontab": "",
"once": false,
"onceDelay": 0.1,
"topic": "usb_video",
"payload": "start",
"payloadType": "str",
"x": 140,
"y": 260,
"wires": [
[
"exec_usb_video"
]
]
},
{
"id": "exec_usb_video",
"type": "exec",
"z": "mobilenet_unet_tab",
"name": "USB视频流启动器",
"command": "source /opt/tros/humble/setup.bash && export CAM_TYPE=usb && ros2 launch dnn_node_example dnn_node_example.launch.py dnn_example_dump_render_img:=0 dnn_example_config_file:=config/mobilenet_unet_workconfig.json dnn_example_image_width:=640 dnn_example_image_height:=480",
"addpay": false,
"append": "",
"useSpawn": true,
"timer": "120",
"oldrc": false,
"x": 380,
"y": 260,
"wires": [
[
"debug_usb_video_output"
],
[
"debug_usb_video_error"
],
[]
]
},
{
"id": "debug_usb_video_output",
"type": "debug",
"z": "mobilenet_unet_tab",
"name": "USB视频流输出",
"active": true,
"tosidebar": true,
"console": false,
"tostatus": true,
"complete": "payload",
"targetType": "msg",
"statusVal": "payload",
"statusType": "auto",
"x": 650,
"y": 240,
"wires": []
},
{
"id": "debug_usb_video_error",
"type": "debug",
"z": "mobilenet_unet_tab",
"name": "USB视频流错误",
"active": true,
"tosidebar": true,
"console": false,
"tostatus": false,
"complete": "payload",
"targetType": "msg",
"statusVal": "",
"statusType": "auto",
"x": 650,
"y": 280,
"wires": []
},
{
"id": "comment_mipi_video_section",
"type": "comment",
"z": "mobilenet_unet_tab",
"name": "📹 MIPI视频流分割流程",
"info": "启动MIPI摄像头实时视频流,进行连续分割",
"x": 150,
"y": 320,
"wires": []
},
{
"id": "inject_mipi_video",
"type": "inject",
"z": "mobilenet_unet_tab",
"name": "📹 MIPI摄像头视频流",
"props": [
{
"p": "payload"
},
{
"p": "topic",
"vt": "str"
}
],
"repeat": "",
"crontab": "",
"once": false,
"onceDelay": 0.1,
"topic": "mipi_video",
"payload": "start",
"payloadType": "str",
"x": 140,
"y": 380,
"wires": [
[
"exec_mipi_video"
]
]
},
{
"id": "exec_mipi_video",
"type": "exec",
"z": "mobilenet_unet_tab",
"name": "MIPI视频流启动器",
"command": "source /opt/tros/humble/setup.bash && export CAM_TYPE=mipi && ros2 launch dnn_node_example dnn_node_example.launch.py dnn_example_dump_render_img:=1 dnn_example_config_file:=config/mobilenet_unet_workconfig.json dnn_example_image_width:=1920 dnn_example_image_height:=1080",
"addpay": false,
"append": "",
"useSpawn": true,
"timer": "120",
"oldrc": false,
"x": 380,
"y": 380,
"wires": [
[
"debug_mipi_video_output"
],
[
"debug_mipi_video_error"
],
[]
]
},
{
"id": "debug_mipi_video_output",
"type": "debug",
"z": "mobilenet_unet_tab",
"name": "MIPI视频流输出",
"active": true,
"tosidebar": true,
"console": false,
"tostatus": true,
"complete": "payload",
"targetType": "msg",
"statusVal": "payload",
"statusType": "auto",
"x": 650,
"y": 360,
"wires": []
},
{
"id": "debug_mipi_video_error",
"type": "debug",
"z": "mobilenet_unet_tab",
"name": "MIPI视频流错误",
"active": true,
"tosidebar": true,
"console": false,
"tostatus": false,
"complete": "payload",
"targetType": "msg",
"statusVal": "",
"statusType": "auto",
"x": 650,
"y": 400,
"wires": []
},
{
"id": "comment_browser_section",
"type": "comment",
"z": "mobilenet_unet_tab",
"name": "2️⃣ 查看检测结果",
"info": "在浏览器中查看实时检测画面",
"x": 200,
"y": 440,
"wires": []
},
{
"id": "inject_browser",
"type": "inject",
"z": "mobilenet_unet_tab",
"name": "打开可视化页面",
"props": [
{
"p": "payload"
},
{
"p": "topic",
"vt": "str"
}
],
"repeat": "",
"crontab": "",
"once": false,
"onceDelay": 0.1,
"topic": "",
"payload": "http://{host}:8000",
"payloadType": "str",
"x": 140,
"y": 480,
"wires": [
[
"openurl_browser"
]
]
},
{
"id": "openurl_browser",
"type": "rdk-tools openurl",
"z": "mobilenet_unet_tab",
"name": "",
"x": 380,
"y": 480,
"wires": []
},
{
"id": "comment_display_section",
"type": "comment",
"z": "mobilenet_unet_tab",
"name": "🖼️ 拍照分割结果展示",
"info": "自动读取最新的分割结果并显示在Node-RED编辑器中",
"x": 150,
"y": 540,
"wires": []
},
{
"id": "inject_refresh_display",
"type": "inject",
"z": "mobilenet_unet_tab",
"name": "刷新显示",
"props": [
{
"p": "payload"
}
],
"repeat": "",
"crontab": "",
"once": false,
"topic": "",
"payload": "",
"payloadType": "str",
"x": 140,
"y": 600,
"wires": [
[
"exec_find_latest"
]
]
},
{
"id": "exec_find_latest",
"type": "exec",
"z": "mobilenet_unet_tab",
"name": "查找最新结果",
"command": "cd /tmp/mobilenet_unet && ls -t render_*.jpg render_*.jpeg 2>/dev/null | head -1",
"addpay": false,
"append": "",
"useSpawn": false,
"timer": "",
"oldrc": false,
"x": 350,
"y": 600,
"wires": [
[
"function_check_file"
],
[],
[]
]
},
{
"id": "exec_list_dir",
"type": "exec",
"z": "mobilenet_unet_tab",
"name": "列出目录内容(调试)",
"command": "cd /tmp/mobilenet_unet && echo \"当前目录: $(pwd)\" && echo \"目录内容:\" && ls -lh 2>&1",
"addpay": false,
"append": "",
"useSpawn": false,
"timer": "",
"oldrc": false,
"x": 350,
"y": 640,
"wires": [
[
"debug_find_result"
],
[],
[]
]
},
{
"id": "debug_find_result",
"type": "debug",
"z": "mobilenet_unet_tab",
"name": "调试:查找结果",
"active": true,
"tosidebar": true,
"console": false,
"tostatus": false,
"complete": "payload",
"targetType": "msg",
"x": 550,
"y": 620,
"wires": []
},
{
"id": "function_check_file",
"type": "function",
"z": "mobilenet_unet_tab",
"name": "检查文件路径",
"func": "// 提取文件路径(exec节点输出可能包含换行符)\nvar output = msg.payload ? msg.payload.toString().trim() : '';\n\n// 如果输出为空,说明没有找到文件\nif (!output) {\n node.status({ fill: 'yellow', shape: 'dot', text: '未找到文件' });\n return null;\n}\n\n// 提取第一行(文件路径)\nvar lines = output.split('\\n').filter(line => line.trim().length > 0);\nvar filename = lines.length > 0 ? lines[0].trim() : '';\n\n// 如果文件名不是完整路径,添加目录前缀\nif (filename && !filename.startsWith('/')) {\n filename = '/tmp/mobilenet_unet/' + filename;\n}\n\nif (!filename) {\n node.warn('无法提取文件路径');\n node.status({ fill: 'red', shape: 'dot', text: '路径提取失败' });\n return null;\n}\n\nmsg.filename = filename;\nnode.status({ fill: 'green', shape: 'dot', text: '找到文件: ' + path.basename(filename) });\nreturn msg;",
"outputs": 1,
"noerr": 0,
"initialize": "",
"finalize": "",
"libs": [
{
"var": "path",
"module": "path"
}
],
"x": 550,
"y": 600,
"wires": [
[
"debug_file_path",
"file_read_image"
]
]
},
{
"id": "debug_file_path",
"type": "debug",
"z": "mobilenet_unet_tab",
"name": "调试:文件路径",
"active": true,
"tosidebar": true,
"console": false,
"tostatus": false,
"complete": "true",
"targetType": "full",
"x": 750,
"y": 620,
"wires": []
},
{
"id": "file_read_image",
"type": "file in",
"z": "mobilenet_unet_tab",
"name": "读取图片",
"filename": "",
"format": "buffer",
"chunk": false,
"sendError": false,
"encoding": "none",
"allProps": false,
"x": 750,
"y": 600,
"wires": [
[
"image_viewer_result"
]
]
},
{
"id": "image_viewer_result",
"type": "image viewer",
"z": "mobilenet_unet_tab",
"name": "显示分割结果",
"width": "640",
"data": "payload",
"dataType": "msg",
"active": true,
"x": 950,
"y": 600,
"wires": [
[]
]
},
{
"id": "comment_control_section",
"type": "comment",
"z": "mobilenet_unet_tab",
"name": "🎮 控制功能",
"info": "停止分割服务",
"x": 150,
"y": 680,
"wires": []
},
{
"id": "inject_stop",
"type": "inject",
"z": "mobilenet_unet_tab",
"name": "停止分割服务",
"props": [
{
"p": "payload"
}
],
"repeat": "",
"crontab": "",
"once": false,
"topic": "",
"payload": "stop",
"payloadType": "str",
"x": 140,
"y": 740,
"wires": [
[
"exec_stop_all"
]
]
},
{
"id": "exec_stop_all",
"type": "exec",
"z": "mobilenet_unet_tab",
"name": "停止服务",
"command": "sudo pkill -9 -f hobot_usb_cam; sudo pkill -9 -f dnn_node_example; sudo pkill -9 -f hobot_codec_republish; sudo pkill -9 -f websocket; sudo pkill -9 -f python3; sudo pkill -9 -f 'ros2 launch'; sudo pkill -9 -f 'ros2 run'; sleep 2; sudo rm -rf /dev/shm/*; ros2 daemon stop 2>/dev/null; sleep 1; echo '✓ 服务已彻底停止,资源已释放'",
"addpay": false,
"append": "",
"useSpawn": false,
"timer": "10",
"oldrc": false,
"x": 350,
"y": 740,
"wires": [
[
"debug_stop_info"
],
[],
[]
]
},
{
"id": "debug_stop_info",
"type": "debug",
"z": "mobilenet_unet_tab",
"name": "停止状态",
"active": true,
"tosidebar": true,
"console": false,
"tostatus": true,
"complete": "payload",
"targetType": "msg",
"statusVal": "payload",
"statusType": "auto",
"x": 550,
"y": 740,
"wires": []
},
{
"id": "function_wait_and_refresh",
"type": "function",
"z": "mobilenet_unet_tab",
"name": "等待分割完成",
"func": "// 轮询检查分割结果文件是否生成\n// 根据官方文档:渲染结果保存在运行路径下,命名方式为 render_frameid_时间戳秒_时间戳纳秒.jpg\n// fs 和 path 已在 libs 中声明,直接使用\nconst saveDir = '/tmp/mobilenet_unet';\n\n// 使用全局变量来避免重复触发和处理\nif (typeof global.refreshScheduled === 'undefined') {\n global.refreshScheduled = false;\n}\nif (typeof global.processedFiles === 'undefined') {\n global.processedFiles = new Set();\n}\n\nif (!global.refreshScheduled) {\n global.refreshScheduled = true;\n \n // 轮询检查文件是否存在,最多等待20秒(分割需要时间)\n let checkCount = 0;\n const maxChecks = 40; // 40次 × 500ms = 20秒\n const self = node;\n let timerId = null;\n \n const checkFile = function() {\n checkCount++;\n \n // 查找最新的render文件(命名格式:render_frameid_时间戳秒_时间戳纳秒.jpg)\n try {\n if (!fs.existsSync(saveDir)) {\n self.warn('目录不存在: ' + saveDir);\n if (checkCount < maxChecks) {\n timerId = setTimeout(checkFile, 500);\n } else {\n global.refreshScheduled = false;\n self.status({ fill: 'red', shape: 'dot', text: '目录不存在' });\n }\n return;\n }\n \n const files = fs.readdirSync(saveDir).filter(f => \n f.startsWith('render_') && (f.endsWith('.jpg') || f.endsWith('.jpeg') || f.endsWith('.JPG') || f.endsWith('.JPEG'))\n );\n \n if (files.length > 0) {\n // 按修改时间排序,取最新的\n files.sort((a, b) => {\n const statA = fs.statSync(path.join(saveDir, a));\n const statB = fs.statSync(path.join(saveDir, b));\n return statB.mtime - statA.mtime;\n });\n \n const latestFile = files[0];\n const filePath = path.join(saveDir, latestFile);\n const fileStat = fs.statSync(filePath);\n \n // 检查文件是否在最近10秒内被修改(说明刚生成)\n const now = Date.now();\n const fileTime = fileStat.mtime.getTime();\n const timeDiff = (now - fileTime) / 1000; // 秒\n \n // 检查是否已经处理过这个文件\n if (global.processedFiles.has(filePath)) {\n // 文件已处理,停止轮询\n if (timerId) clearTimeout(timerId);\n global.refreshScheduled = false;\n self.status({ fill: 'green', shape: 'dot', text: '结果已显示' });\n return;\n }\n \n if (timeDiff < 10) {\n // 文件刚生成且未处理过,标记为已处理并发送\n global.processedFiles.add(filePath);\n if (timerId) clearTimeout(timerId);\n global.refreshScheduled = false;\n self.status({ fill: 'green', shape: 'dot', text: '结果已生成: ' + latestFile });\n self.send({filename: filePath});\n return;\n } else {\n // 文件太旧,继续检查\n self.status({ fill: 'blue', shape: 'dot', text: '等待新文件... (' + checkCount + '/' + maxChecks + ')' });\n }\n } else {\n self.status({ fill: 'yellow', shape: 'dot', text: '检查中... (' + checkCount + '/' + maxChecks + ')' });\n }\n } catch (err) {\n // 目录不存在或读取失败,继续等待\n self.warn('检查文件失败: ' + err.message);\n }\n \n if (checkCount < maxChecks) {\n // 继续检查\n timerId = setTimeout(checkFile, 500); // 每500ms检查一次\n } else {\n // 超时,停止轮询\n global.refreshScheduled = false;\n self.status({ fill: 'yellow', shape: 'dot', text: '超时,未找到新结果' });\n }\n };\n \n // 延迟3秒后开始检查(给分割一些启动时间)\n timerId = setTimeout(checkFile, 3000);\n}\nreturn null;",
"outputs": 1,
"noerr": 0,
"initialize": "",
"finalize": "",
"libs": [
{
"var": "fs",
"module": "fs"
},
{
"var": "path",
"module": "path"
}
],
"x": 1180,
"y": 100,
"wires": [
[
"debug_file_path",
"file_read_image"
]
]
},
{
"id": "global_config_mobilenet_unet",
"type": "global-config",
"env": [],
"modules": {
"node-red-node-rdk-camera": "0.0.17",
"node-red-contrib-image-tools": "2.1.1"
}
}
]