diff --git a/app/src/main/java/com/casic/common/detector/gd/service/SerialPortService.kt b/app/src/main/java/com/casic/common/detector/gd/service/SerialPortService.kt
index 99dfdc5..42ad30c 100644
--- a/app/src/main/java/com/casic/common/detector/gd/service/SerialPortService.kt
+++ b/app/src/main/java/com/casic/common/detector/gd/service/SerialPortService.kt
@@ -21,7 +21,7 @@
     private val gpioManager by lazy { GpioManager() }
     private val serialPorts = BaseApplication.get().getSerialPorts()
     private val sendExecutor = Executors.newFixedThreadPool(5)
-    private var executor = Executors.newScheduledThreadPool(2)
+    private var readExecutor = Executors.newSingleThreadScheduledExecutor()
     private var outStream: OutputStream? = null
     private var inStreamFirst: InputStream? = null
     private var inStreamLast: InputStream? = null
@@ -61,13 +61,14 @@
             inStreamFirst = serialPorts.first().inputStream
             inStreamLast = serialPorts.last().inputStream
 
-            executor.scheduleAtFixedRate({
+            // 使用单线程调度器读取数据
+            readExecutor.scheduleAtFixedRate({
                 if (gpioState.get() == 1) {
                     readData(inStreamFirst!!, listener)
                 }
             }, 100, 150, TimeUnit.MILLISECONDS)
 
-            executor.scheduleAtFixedRate({
+            readExecutor.scheduleAtFixedRate({
                 if (gpioState.get() == 1) {
                     readData(inStreamLast!!, listener)
                 }
@@ -80,7 +81,7 @@
 
     private fun readData(inputStream: InputStream, listener: OnSerialPortListener) {
         try {
-            val buffer = ByteArray(72)
+            val buffer = ByteArray(1024)
             var bytesRead: Int
             while (inputStream.available() > 0) {
                 bytesRead = inputStream.read(buffer)