diff --git a/readme.md b/readme.md
index aa2778f..eed2f12 100644
--- a/readme.md
+++ b/readme.md
@@ -14,6 +14,10 @@
 
 <center><img src="./PCB.jpeg" alt="PCB" style="width:33%;" /><img src="./FPC.jpeg" alt="FPC" style="width:33%;" /></center>
 
+<center><img src="./SCH_Sensor_1-P1_2025-07-18.pdf" alt="SCH_SEB" style="width:33%;" /><img src="./SCH_Batch4_1-9548_2025-07-18.pdf" alt="SCH_CRL" style="width:33%;" /></center>
+
+<center><img src="./PCB_Sensor_2025-07-18.pdf" alt="PCB_SEN" style="width:33%;" /><img src="./PCB_Batch4_1-9548_2025-07-18.pdf" alt="PCB_CRL" style="width:33%;" /></center>
+
 ## 主控程序
 
 - 初始化：软重置所有通道的传感器。