From abcd40f88b5f2790e3f5ce1a123fe69ff492bec6 Mon Sep 17 00:00:00 2001
From: 16337 <1633794139@qq.com>
Date: Wed, 11 Feb 2026 17:54:48 +0800
Subject: [PATCH] =?UTF-8?q?fix(aiot):=20=E9=99=8D=E4=BD=8EYOLO=E7=BD=AE?=
 =?UTF-8?q?=E4=BF=A1=E5=BA=A6=E9=98=88=E5=80=BC(0.5=E2=86=920.4)=E5=87=8F?=
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人员在岗但检测置信度低于0.5被过滤，导致算法误判"无人"触发离岗告警。
将默认阈值降至0.4，同步更新环境变量默认值。

Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>
---
 config/settings.py | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/config/settings.py b/config/settings.py
index 61673f6..28fec69 100644
--- a/config/settings.py
+++ b/config/settings.py
@@ -117,7 +117,7 @@ class InferenceConfig:
     input_width: int = 480
     input_height: int = 480
     batch_size: int = 1
-    conf_threshold: float = 0.5
+    conf_threshold: float = 0.4
     nms_threshold: float = 0.45
     device_id: int = 0
     fp16_mode: bool = True
@@ -273,7 +273,7 @@ class Settings:
             input_width=int(os.getenv("INPUT_WIDTH", "480")),
             input_height=int(os.getenv("INPUT_HEIGHT", "480")),
             batch_size=int(os.getenv("BATCH_SIZE", "4")),
-            conf_threshold=float(os.getenv("CONF_THRESHOLD", "0.5")),
+            conf_threshold=float(os.getenv("CONF_THRESHOLD", "0.4")),
             nms_threshold=float(os.getenv("NMS_THRESHOLD", "0.45")),
         )