diff --git a/entry/src/main/ets/entryability/EntryAbility.ets b/entry/src/main/ets/entryability/EntryAbility.ets
index 7da2fc8..bd593fb 100644
--- a/entry/src/main/ets/entryability/EntryAbility.ets
+++ b/entry/src/main/ets/entryability/EntryAbility.ets
@@ -12,6 +12,7 @@ import FileUtils from '../utils/FileUtils';
 import { EntryTag } from '../config';
 import { dConsole } from '../utils/LogWorker';
 import { UseAuth } from '../utils/Common';
+import { DifferentialAndSignal } from '../utils/business/DifferentialAndSignalWorker';
 
 export default class EntryAbility extends UIAbility {
   async onCreate(want: Want, launchParam: AbilityConstant.LaunchParam) {
@@ -92,6 +93,8 @@ export default class EntryAbility extends UIAbility {
   onWindowStageDestroy() {
     // Main window is destroyed, release UI related resources
     console.log(EntryTag, "onWindowStageDestroy", "窗口销毁完成")
+    DifferentialAndSignal.close()
+
   }
 
   onForeground() {
diff --git a/entry/src/main/ets/model/Worker.ets b/entry/src/main/ets/model/Worker.ets
index 9d89618..c1944b7 100644
--- a/entry/src/main/ets/model/Worker.ets
+++ b/entry/src/main/ets/model/Worker.ets
@@ -6,6 +6,8 @@ export interface WorkerMessage {
   centerUdpParam?: UDPParamType;
   otherMessage: OtherMessageType;
   singlePlay?: boolean
+  //   关闭
+  close?: boolean;
 }
 
 export interface OtherMessageType {
diff --git a/entry/src/main/ets/utils/business/DifferentialAndSignalWorker.ets b/entry/src/main/ets/utils/business/DifferentialAndSignalWorker.ets
index b4f9ffd..8f3d6bb 100644
--- a/entry/src/main/ets/utils/business/DifferentialAndSignalWorker.ets
+++ b/entry/src/main/ets/utils/business/DifferentialAndSignalWorker.ets
@@ -50,6 +50,18 @@ class differentialAndSignal {
     this.events = this.events.filter((cb) => cb !== callback);
   }
 
+  // 关闭
+  close() {
+    const config: EnvironmentConfigurationType = AppStorage.get<EnvironmentConfigurationType>("EnvironmentConfiguration") || {
+    }
+    this.workerInstance.postMessage(JSON.stringify({
+      config: config,
+      close: true
+    }));
+    // 关闭线程
+    this.workerInstance.terminate()
+  }
+
   // 获取Worker消息
   getMessage() {
     this.workerInstance.onmessage = (e: MessageEvents): void => {
diff --git a/entry/src/main/ets/utils/business/ObtainUdpBusiness.ets b/entry/src/main/ets/utils/business/ObtainUdpBusiness.ets
index 59d511f..e929d8b 100644
--- a/entry/src/main/ets/utils/business/ObtainUdpBusiness.ets
+++ b/entry/src/main/ets/utils/business/ObtainUdpBusiness.ets
@@ -88,6 +88,23 @@ class ObtainUdpBusiness {
     }
   }
 
+  // 关闭
+  close() {
+    switch (this.modelNo) {
+      case "0":
+        break
+      case "1":
+        break
+      case "2":
+        break
+      case "3":
+        this.thirdGenerationMachineUdp!.close()
+        break
+      default:
+        break
+    }
+  }
+
   private initSecondaryBoard() {
 
   }
diff --git a/entry/src/main/ets/utils/business/SerialPortService.ets b/entry/src/main/ets/utils/business/SerialPortService.ets
index ef34d1b..7e1b86f 100644
--- a/entry/src/main/ets/utils/business/SerialPortService.ets
+++ b/entry/src/main/ets/utils/business/SerialPortService.ets
@@ -45,6 +45,7 @@ class serialPortService {
     if (this.fd !== -1) {
       await InitSerialPortData(this.fd, Number(this.baudRate))
       ReceiveSerialPortDataBySelf(this.fd, (res1: number, res2: number, res3: number[]) => {
+        console.log(SerialPortTag, "串口接收数据", res1, res2, res3)
         this.events.forEach((callback) => {
           callback(res3);
         });
diff --git a/entry/src/main/ets/workers/DifferentialCorrection.ets b/entry/src/main/ets/workers/DifferentialCorrection.ets
index 452625e..5b833bb 100644
--- a/entry/src/main/ets/workers/DifferentialCorrection.ets
+++ b/entry/src/main/ets/workers/DifferentialCorrection.ets
@@ -1,10 +1,11 @@
 // 处理worker线程的消息tcp拿差分改正数,udp给后置机
 import worker, { ErrorEvent, MessageEvents, ThreadWorkerGlobalScope } from '@ohos.worker';
-import { WorkerTag } from '../config';
+import { SerialPortTag, WorkerTag } from '../config';
 import { CenterCallBackMsgType, WorkerBackMessage, WorkerBackMessageType, WorkerMessage } from '../model';
 import { CenterUDPBusinessInstance } from '../utils/business/CenterUdpBusiness';
 import { DifferentialSignal } from '../utils/business/DifferentialSignal';
 import { ObtainUdpBusinessInstance } from '../utils/business/ObtainUdpBusiness';
+import { SerialPortService } from '../utils/business/SerialPortService';
 
 const workerPort: ThreadWorkerGlobalScope = worker.workerPort;
 
@@ -23,6 +24,10 @@ workerPort.onmessage = (e: MessageEvents) => {
   //   CenterUDPBusinessInstance.sendData(result.centerUdpParam);
   // }
   getDataFn()
+  // 必传环境配置
+  if (result.close) {
+    closedFn(result)
+  }
 }
 
 // 初始化函数
@@ -39,6 +44,10 @@ function initFn(result: WorkerMessage) {
   CenterUDPBusinessInstance.startHeartBeat()
   // 初始化考试过程UDP
   // JudgeUdpBusinessInstance.init(result.config, result.carInfo, result?.singlePlay || false, result.otherMessage.lsh)
+  //   初始化档位信号串口
+  if (result.config.carType !== "2") {
+    SerialPortService.init()
+  }
 }
 
 function getDataFn() {
@@ -53,7 +62,11 @@ function getDataFn() {
     // TODO
     // 需要观察
     console.log(WorkerTag, "后置机消息", data)
+    // 这里面还需要处理一下档位信号
     // 收到后置机消息传出去提供给业务,data应该是个string
+    SerialPortService.onMsg((data: number[]) => {
+      console.log(SerialPortTag, "需要处理档位信号:", data);
+    })
     workerPort.postMessage(
       JSON.stringify({
         type: WorkerBackMessageType.ObtainUdpData,
@@ -75,6 +88,16 @@ function getDataFn() {
   })
 }
 
+// 关闭函数
+function closedFn(result: WorkerMessage) {
+  ObtainUdpBusinessInstance.close()
+  CenterUDPBusinessInstance.close()
+  // 关闭串口
+  if (result.config.carType !== "2") {
+    SerialPortService.closed()
+  }
+}
+
 
 workerPort.onmessageerror = (e: MessageEvents) => {
   console.log(WorkerTag, `Worker received message error: ${e.data}`);