diff --git a/example2_two_sensor_pipeline.py b/example2_two_sensor_pipeline.py
index 082cc2d..75dc749 100644
--- a/example2_two_sensor_pipeline.py
+++ b/example2_two_sensor_pipeline.py
@@ -113,6 +113,7 @@ def main():
     # =========================================================================
     # 1. 配置多个传感器
     # =========================================================================
+    num_sensors = 2
     sensor_configs = [
         {
             'vid_src': './s1.mp4',
@@ -127,7 +128,7 @@ def main():
     # =========================================================================
     # 2. 创建进程间通信对象
     # =========================================================================
-    result_queues = [Queue(maxsize=2) for _ in sensor_configs]  # 每个传感器一个队列
+    result_queues = [Queue(maxsize=num_sensors) for _ in sensor_configs]  # 每个传感器一个队列
     stop_events = [mp.Event() for _ in sensor_configs]  # 停止事件
     
     # =========================================================================