diff --git a/wms-module-system/src/main/java/top/wms/admin/light/SerialPortHandler.java b/wms-module-system/src/main/java/top/wms/admin/light/SerialPortHandler.java
index aa0a29e..21111b6 100644
--- a/wms-module-system/src/main/java/top/wms/admin/light/SerialPortHandler.java
+++ b/wms-module-system/src/main/java/top/wms/admin/light/SerialPortHandler.java
@@ -51,40 +51,48 @@ public class SerialPortHandler {
         try {
             // 获取所有可用的串口
             SerialPort[] ports = SerialPort.getCommPorts();
+            log.info("可用串口列表: {}", java.util.Arrays.stream(ports).map(SerialPort::getSystemPortName).toList());
 
             // 查找指定的串口
+            SerialPort targetPort = null;
             for (SerialPort port : ports) {
-                if (port.getSystemPortName().equals(portName)) {
-                    serialPort = port;
+                String portName = port.getSystemPortName();
+                log.debug("检查串口: {}", portName);
+                if (portName.equals(this.portName)) {
+                    targetPort = port;
+                    log.info("找到目标串口: {}", portName);
                     break;
                 }
             }
 
-            if (serialPort == null) {
-                log.error("未找到串口: {}", portName);
+            if (targetPort == null) {
+                log.error("未找到串口: {}", this.portName);
                 return false;
             }
 
             // 配置串口参数
-            serialPort.setBaudRate(baudRate);
-            serialPort.setNumDataBits(8);
-            serialPort.setNumStopBits(1);
-            serialPort.setParity(SerialPort.NO_PARITY);
-            serialPort.setFlowControl(SerialPort.FLOW_CONTROL_DISABLED);
+            targetPort.setBaudRate(baudRate);
+            targetPort.setNumDataBits(8);
+            targetPort.setNumStopBits(1);
+            targetPort.setParity(SerialPort.NO_PARITY);
+            targetPort.setFlowControl(SerialPort.FLOW_CONTROL_DISABLED);
 
             // 打开串口
-            boolean opened = serialPort.openPort();
+            boolean opened = targetPort.openPort();
             if (opened) {
                 // 设置读取超时时间（毫秒）
-                serialPort.setComPortTimeouts(SerialPort.TIMEOUT_READ_SEMI_BLOCKING, 1000, 0);
-                inputStream = serialPort.getInputStream();
-                outputStream = serialPort.getOutputStream();
-                log.info("串口 {} 打开成功，波特率: {}", portName, baudRate);
+                targetPort.setComPortTimeouts(SerialPort.TIMEOUT_READ_SEMI_BLOCKING, 1000, 0);
+                this.serialPort = targetPort;
+                this.inputStream = targetPort.getInputStream();
+                this.outputStream = targetPort.getOutputStream();
+                log.info("串口 {} 打开成功，波特率: {}", this.portName, baudRate);
+            } else {
+                log.error("串口 {} 打开失败", this.portName);
             }
             return opened;
 
         } catch (Exception e) {
-            log.error("打开串口失败: {}", e.getMessage());
+            log.error("打开串口 {} 失败: {}", this.portName, e.getMessage());
             return false;
         }
     }
@@ -103,15 +111,21 @@ public class SerialPortHandler {
      */
     public void sendData(byte[] data) {
         try {
+            // 验证串口是否正确打开
+            if (serialPort == null || !serialPort.isOpen()) {
+                log.error("串口 {} 未打开，无法发送数据", portName);
+                return;
+            }
+            
             if (outputStream == null) {
-                log.error("输出流未初始化");
+                log.error("串口 {} 输出流未初始化", portName);
                 return;
             }
             outputStream.write(data);
             outputStream.flush();
-            log.debug("发送: {}", new String(data));
+            log.info("串口 {} 发送数据: {}", portName, new String(data));
         } catch (IOException e) {
-            log.error("发送数据失败: {}", e.getMessage());
+            log.error("串口 {} 发送数据失败: {}", portName, e.getMessage());
         }
     }
 
@@ -121,9 +135,10 @@ public class SerialPortHandler {
      */
     public void sendData(String data) {
         try {
+            log.info("串口 {} 准备发送字符串: {}", portName, data);
             sendData(data.getBytes(StandardCharsets.US_ASCII));
         } catch (Exception e) {
-            log.error("发送字符串数据失败: {}", e.getMessage());
+            log.error("串口 {} 发送字符串数据失败: {}", portName, e.getMessage());
         }
     }
 
@@ -134,6 +149,18 @@ public class SerialPortHandler {
      */
     public String receiveResponse(int timeoutMs) {
         try {
+            // 验证串口是否正确打开
+            if (serialPort == null || !serialPort.isOpen()) {
+                log.error("串口 {} 未打开，无法接收数据", portName);
+                return null;
+            }
+            
+            // 验证输入流是否初始化
+            if (inputStream == null) {
+                log.error("串口 {} 输入流未初始化", portName);
+                return null;
+            }
+
             // 等待数据到达
             long startTime = System.currentTimeMillis();
             while (inputStream.available() == 0 && 
@@ -147,11 +174,11 @@ public class SerialPortHandler {
             if (available > 0) {
                 int len = inputStream.read(buffer, 0, Math.min(available, buffer.length));
                 String response = new String(buffer, 0, len);
-                log.debug("接收: {}", response);
+                log.info("串口 {} 接收数据: {}", portName, response);
                 return response;
             }
         } catch (Exception e) {
-            log.error("接收响应失败: ", e);
+            log.error("串口 {} 接收响应失败: {}", portName, e.getMessage());
         }
         return null;
     }
@@ -164,6 +191,18 @@ public class SerialPortHandler {
      */
     public String receiveResponse(int length, int timeoutMs) {
         try {
+            // 验证串口是否正确打开
+            if (serialPort == null || !serialPort.isOpen()) {
+                log.error("串口 {} 未打开，无法接收数据", portName);
+                return null;
+            }
+            
+            // 验证输入流是否初始化
+            if (inputStream == null) {
+                log.error("串口 {} 输入流未初始化", portName);
+                return null;
+            }
+
             byte[] buffer = new byte[length];
             int bytesRead = 0;
             long startTime = System.currentTimeMillis();
@@ -181,11 +220,11 @@ public class SerialPortHandler {
 
             if (bytesRead > 0) {
                 String response = new String(buffer, 0, bytesRead);
-                log.debug("接收: {}", response);
+                log.info("串口 {} 接收数据: {}", portName, response);
                 return response;
             }
         } catch (Exception e) {
-            log.error("接收响应失败: {}", e.getMessage());
+            log.error("串口 {} 接收响应失败: {}", portName, e.getMessage());
         }
         return null;
     }