object detection: revise

opencv-yolo/web/web.py

@@ -74,7 +74,7 @@ RABBITMQ_TOPIC = os.getenv("RABBITMQ_TOPIC", "*.camera.model")
 RABBITMQ_EXHANGE = os.getenv("RABBITMQ_EXHANGE", "video")
 AI_QUEUE_TASK = os.getenv('AI_TASK', 'videoai.v1.task')
 AI_QUEUE_RESULT = os.getenv('AI_RESULT', 'videoai.v1.result')
-AI_EXCHANGE = os.getenv('AI_XHG', 'videoai')
+AI_EXCHANGE = os.getenv('AI_XHG', '')
 
 CAMERA_CONFIG_MAP = {}