diff --git a/app/src/main/java/com/yinuo/safetywatcher/watcher/base/BaseActivity.kt b/app/src/main/java/com/yinuo/safetywatcher/watcher/base/BaseActivity.kt
index 314ab74..1143b19 100644
--- a/app/src/main/java/com/yinuo/safetywatcher/watcher/base/BaseActivity.kt
+++ b/app/src/main/java/com/yinuo/safetywatcher/watcher/base/BaseActivity.kt
@@ -25,6 +25,7 @@ import com.loper7.date_time_picker.number_picker.NumberPicker
 import com.yinuo.safetywatcher.R
 import com.yinuo.safetywatcher.databinding.ActivityBaseBinding
 import com.yinuo.safetywatcher.watcher.constant.NAMESPACE_ANDROID
+import com.yinuo.safetywatcher.watcher.port.GasPortUtils
 import com.yinuo.safetywatcher.watcher.ui.view.CommonDialog
 import com.yinuo.safetywatcher.watcher.ui.view.CommonTopBar
 import com.yinuo.safetywatcher.watcher.utils.PlatformUtils
@@ -68,11 +69,23 @@ abstract class BaseActivity : AppCompatActivity() {
         }
         baseBinding.tvConfirm.setOnClickListener {
             onShutDown()
-            PlatformUtils.shutDown()
         }
     }
 
+    private val shoutDownListener: (ByteArray) -> Unit = {
+        if (it[0] == 0x01.toByte() && it[1] == 0x06.toByte() && it[2] == 0x05.toByte() && it[5] == 0x00.toByte()) {
+            if (shoutDowning) {
+                shoutDowning = false
+                PlatformUtils.shutDown()
+            }
+        }
+    }
+
+    var shoutDowning = false
     open fun onShutDown() {
+        GasPortUtils.addListener(shoutDownListener)
+        shoutDowning = true
+        GasPortUtils.setSpeed(0)
         // 暂停录制编码
         RecordHelper.stopRecording()
     }
@@ -224,6 +237,7 @@ abstract class BaseActivity : AppCompatActivity() {
     override fun onDestroy() {
         super.onDestroy()
         closeLoadingDialog()
+        GasPortUtils.removeListener(shoutDownListener)
         GlobalScope.launch(Dispatchers.IO) {
             MMKVUtils.sync()
         }
diff --git a/app/src/main/java/com/yinuo/safetywatcher/watcher/port/GasPortUtils.kt b/app/src/main/java/com/yinuo/safetywatcher/watcher/port/GasPortUtils.kt
index d814219..92c40b3 100644
--- a/app/src/main/java/com/yinuo/safetywatcher/watcher/port/GasPortUtils.kt
+++ b/app/src/main/java/com/yinuo/safetywatcher/watcher/port/GasPortUtils.kt
@@ -95,12 +95,14 @@ object GasPortUtils {
                             Thread.sleep(READ_MSG_INTERVAL)
                             ComMultiPortUtils.sendMsg(PORT_PATH, CMD.SENSOR_5)
                         }
-                        if (toDoCmdList.isNotEmpty()) {
-                            toDoCmdList.forEach {
-                                Thread.sleep(READ_MSG_INTERVAL)
-                                ComMultiPortUtils.sendMsg(PORT_PATH, it)
+                        synchronized(toDoCmdList) {
+                            if (toDoCmdList.isNotEmpty()) {
+                                toDoCmdList.forEach {
+                                    Thread.sleep(READ_MSG_INTERVAL)
+                                    ComMultiPortUtils.sendMsg(PORT_PATH, it)
+                                }
+                                toDoCmdList.clear()
                             }
-                            toDoCmdList.clear()
                         }
                     }
                 } catch (e: Exception) {
@@ -113,22 +115,30 @@ object GasPortUtils {
     }
 
     fun setSpeed(speed: Int) {
-        toDoCmdList.add(CMD.buildSpeedCmd(speed))
+        synchronized(toDoCmdList) {
+            toDoCmdList.add(CMD.buildSpeedCmd(speed))
+        }
     }
 
     fun calibrationSensor(index: Int, value: Int) {
-        if (value == 0) {
-            toDoCmdList.add(CalibrationCmd(index, value).buildZeroCmd())
-        } else {
-            toDoCmdList.add(CalibrationCmd(index, value).buildSPANCmd())
+        synchronized(toDoCmdList) {
+            if (value == 0) {
+                toDoCmdList.add(CalibrationCmd(index, value).buildZeroCmd())
+            } else {
+                toDoCmdList.add(CalibrationCmd(index, value).buildSPANCmd())
+            }
         }
     }
 
     private fun switchSensor(index: Int, open: Boolean) {
-        toDoCmdList.add(buildSwitchSensorCmd(index, open))
+        synchronized(toDoCmdList) {
+            toDoCmdList.add(buildSwitchSensorCmd(index, open))
+        }
     }
 
     fun setSensorMaxRange(index: Int, value: Int) {
-        toDoCmdList.add(buildSensorRangeCmd(index, value))
+        synchronized(toDoCmdList) {
+            toDoCmdList.add(buildSensorRangeCmd(index, value))
+        }
     }
 }
\ No newline at end of file