diff --git a/project/ble_peripheral/ble_app_bladder_patch/command/handlers/cmd_piezo.c b/project/ble_peripheral/ble_app_bladder_patch/command/handlers/cmd_piezo.c
index 588cd17..b479e63 100644
--- a/project/ble_peripheral/ble_app_bladder_patch/command/handlers/cmd_piezo.c
+++ b/project/ble_peripheral/ble_app_bladder_patch/command/handlers/cmd_piezo.c
@@ -283,11 +283,6 @@ int Cmd_maa(const ParsedCmd *cmd)
         return 1;
     }
 
-    if (!dr_piezo_is_power_on())
-    {
-        dr_piezo_power_on();
-    }
-
     err = maa_async_start(
         m_config.piezo_freq_option,
         m_config.piezo_delay_us,
@@ -340,11 +335,6 @@ int Cmd_mbb(const ParsedCmd *cmd)
 
     maa_async_set_pre_capture_all(true);
 
-    if (!dr_piezo_is_power_on())
-    {
-        dr_piezo_power_on();
-    }
-
     err = maa_async_start(
         m_config.piezo_freq_option,
         m_config.piezo_delay_us,
@@ -396,11 +386,6 @@ int Cmd_mtb(const ParsedCmd *cmd)
 
     maa_async_set_pre_capture_all(true);
 
-    if (!dr_piezo_is_power_on())
-    {
-        dr_piezo_power_on();
-    }
-
     err = maa_async_start(
         m_config.piezo_freq_option,
         m_config.piezo_delay_us,
diff --git a/project/ble_peripheral/ble_app_bladder_patch/measurement/adc121s051/dr_adc121s051.c b/project/ble_peripheral/ble_app_bladder_patch/measurement/adc121s051/dr_adc121s051.c
index 1656774..e45d8b0 100644
--- a/project/ble_peripheral/ble_app_bladder_patch/measurement/adc121s051/dr_adc121s051.c
+++ b/project/ble_peripheral/ble_app_bladder_patch/measurement/adc121s051/dr_adc121s051.c
@@ -53,7 +53,9 @@ extern void dr_piezo_burst_sw_20mhz(uint8_t cycles);
 extern void dr_piezo_burst_sw_17mhz(uint8_t cycles);
 extern void dr_piezo_burst_sw_22mhz(uint8_t cycles);
 extern void dr_piezo_burst_sw_19mhz(uint8_t cycles);
+extern void dr_piezo_power_on(void);
 extern void dr_piezo_power_off(void);
+extern bool dr_piezo_is_power_on(void);
 
 #include "parser.h"
 
@@ -1380,6 +1382,11 @@ dr_adc_err_t maa_async_start(uint8_t freq_option, uint16_t delay_us, uint16_t nu
     /* capture all channels without BLE TX, then start transmission */
     g_maa_ctx.state = MAA_ASYNC_CAPTURING;
 
+    if (!dr_piezo_is_power_on())
+    {
+        dr_piezo_power_on();
+    }
+
     /* Warm up CH0 before real capture (MAA_ASYNC_WARMUP_COUNT). */
     for (uint8_t warmup = 0; warmup < MAA_ASYNC_WARMUP_COUNT; warmup++)
     {