diff --git a/app/src/app_service/ecg_service/ecg_algo.c b/app/src/app_service/ecg_service/ecg_algo.c
index 31a6590..656a9f5 100644
--- a/app/src/app_service/ecg_service/ecg_algo.c
+++ b/app/src/app_service/ecg_service/ecg_algo.c
@@ -6,7 +6,7 @@
 #include "algo/zsimple_qrs.h"
 #include "znordic.h"
 
-#define REPORT_MEDIAN_WINDOWS_SIZE 151  // 必须是奇数
+#define REPORT_MEDIAN_WINDOWS_SIZE 101  // 必须是奇数
 
 LPFilterExt_t    m_lp_filter;
 HPFilterExt_t    m_hp_filter;
@@ -30,6 +30,21 @@ static int32_t m_frame_cnt;
 
 void ecg_algo_init() { ecg_algo_reset(); }
 
+void leadoff_data_process(int32_t indata) {
+  zdata_statistics_push(&m_leadoff_statistics, indata);
+  if (zdata_statistics_is_full(&m_leadoff_statistics)) {
+    int32_t max = zdata_statistics_get_max(&m_leadoff_statistics);
+    int32_t min = zdata_statistics_get_min(&m_leadoff_statistics);
+    if (max - min < 6000) {
+      m_leadoff = true;
+    } else {
+      m_leadoff = false;
+    }
+  } else {
+    m_leadoff = true;
+  }
+}
+
 void report_data_process(int32_t indata) {
   m_frame_cnt++;
   float data = indata;
@@ -47,27 +62,11 @@ void report_data_process(int32_t indata) {
   data       = delay_data - medianValue;
   data       = SmoothingFilter_Update(&m_report_smoothing_filter, data);
   reportdata = data;
-}
 
-void leadoff_data_process(int32_t indata) {
-  zdata_statistics_push(&m_leadoff_statistics, indata);
-  if (zdata_statistics_is_full(&m_leadoff_statistics)) {
-    int32_t max = zdata_statistics_get_max(&m_leadoff_statistics);
-    int32_t min = zdata_statistics_get_min(&m_leadoff_statistics);
-    if (max - min > 45000) {
-      m_leadoff = true;
-    } else {
-      m_leadoff = false;
-    }
-  } else {
-    m_leadoff = true;
-  }
+  leadoff_data_process(data);
 }
 
-void ecg_algo_process_data(int32_t indata) {
-  leadoff_data_process(indata);
-  report_data_process(indata);
-}
+void ecg_algo_process_data(int32_t indata) { report_data_process(indata); }
 
 void ecg_algo_reset() {
   LPFilterExt_init(&m_lp_filter, 40, SAMPLE_PERIOD_S, 5, true);
diff --git a/app/src/app_service/ecg_service/ecg_algo.h b/app/src/app_service/ecg_service/ecg_algo.h
index c58b36e..7582062 100644
--- a/app/src/app_service/ecg_service/ecg_algo.h
+++ b/app/src/app_service/ecg_service/ecg_algo.h
@@ -5,7 +5,7 @@
 #include "app_basic_service/zapp.h"
 
 #define SAMPLE_PERIOD_S     ((float)(1.0 / SAMPLE_RATE))
-#define STATISTICS_BUF_SIZE ((int32_t)(0.5 / SAMPLE_PERIOD_S)) /*1s的数据*/
+#define STATISTICS_BUF_SIZE ((int32_t)(1 / SAMPLE_PERIOD_S)) /*1s的数据*/
 
 void ecg_algo_init();
 void ecg_algo_process_data(int32_t indata);
diff --git a/app/src/app_service/ecg_service/ecg_service.c b/app/src/app_service/ecg_service/ecg_service.c
index d50f956..d1c136a 100644
--- a/app/src/app_service/ecg_service/ecg_service.c
+++ b/app/src/app_service/ecg_service/ecg_service.c
@@ -334,6 +334,8 @@ void            ecg_service_start_capture() {  //
   regcache.resp2     = 0x07;  // 10
   regcache.gpio      = 0x0c;  // 11
 
+  regcache.ch1set = ADS129X_SET_BITS(regcache.ch1set, ADS129X_GAINx, ADS129X_GAIN_12);
+
   if (m_testmode_flag) {
     regcache.cfg2   = ADS129X_SET_BITS(regcache.cfg2, ADS129X_INT_TEST, ADS129X_INT_TEST_ON);
     regcache.cfg2   = ADS129X_SET_BITS(regcache.cfg2, ADS129X_INT_FREQ, ADS129X_INT_FREQ_AC);
@@ -371,5 +373,5 @@ void ecg_service_set_report_data_in_raw_mode(bool rawmode) { m_report_data_in_ra
 
 bool ecg_leadoff_detect() {
   // return false;
-   return ecg_algo_get_leadoff_state(); 
+  return ecg_algo_get_leadoff_state();
 }
diff --git a/app/src/aproject_config/config.h b/app/src/aproject_config/config.h
index 12947d7..4ffc764 100644
--- a/app/src/aproject_config/config.h
+++ b/app/src/aproject_config/config.h
@@ -7,7 +7,7 @@
 #define CATEGORY          "M1003"  // 单导联
 #define MANUFACTURER_NAME "iflytop"
 
-#define FIRMWARE_VERSION   (509)
+#define FIRMWARE_VERSION   (513)
 #define BLESTACK_VERSION   1
 #define BOOTLOADER_VERSION 1
 #define HARDWARE_VERSION   (2)
diff --git a/app/src/one_conduction_main.c b/app/src/one_conduction_main.c
index f99e879..ddd53e2 100644
--- a/app/src/one_conduction_main.c
+++ b/app/src/one_conduction_main.c
@@ -340,6 +340,9 @@ void on_zapp_ebus_event(void* p_event_data, uint16_t event_size) {
       beep_set_effect(START_SAMPLE_EFFECT);
     } else if (event == kappevent_state_machine_state_exit) {
     } else {
+        zapp_state_machine_change_state(kstate_capture);
+
+#if 0
       if (zble_module_has_disconnected_ms() >= 5000) {
         ecg_service_stop_capture();
         zapp_state_machine_change_state(kstate_standby);
@@ -365,6 +368,7 @@ void on_zapp_ebus_event(void* p_event_data, uint16_t event_size) {
           }
         }
       }
+#endif
     }
 
   } else if (zapp_state_machine_now_state() == kstate_capture) {