diff --git a/app/src/main/java/com/casic/detector/view/MainActivity.kt b/app/src/main/java/com/casic/detector/view/MainActivity.kt
index 92fd34e..c5bf8fc 100644
--- a/app/src/main/java/com/casic/detector/view/MainActivity.kt
+++ b/app/src/main/java/com/casic/detector/view/MainActivity.kt
@@ -465,7 +465,6 @@
                     //调高串口电位
                     gpioManager.setGpioHigh("18")
 
-                    soundPool.play(soundResourceId, 1f, 1f, 0, -1, 1f)
                     isFreeTask = true
                     //自由巡检
                     signalTask = object : TimerTask() {
@@ -501,6 +500,8 @@
         } else if (isFreeTask) {
             val markerId = hex.take(20).hexToString()
             if (markerId.isNumber()) {
+                //只响一次，因为探测频率高，所以依旧是连续的报警声
+                soundPool.play(soundResourceId, 1f, 1f, 0, 0, 1f)
                 "标识器${markerId}已探测".show(this)
                 ids.add(markerId)
             }