diff --git a/ECTrainer2/ECTrainerGUI.cpp b/ECTrainer2/ECTrainerGUI.cpp
index 2a7e384..0fc102a 100644
--- a/ECTrainer2/ECTrainerGUI.cpp
+++ b/ECTrainer2/ECTrainerGUI.cpp
@@ -279,8 +279,12 @@
 		}
 		bool snapshot = cvui::button(140, 30, "SNAPSHOT");
 		if (cvui::button(140, 30, "QUIT")) _pEct->StopApp();
-		cvui::printf("HeartBeat (bpm)");
-		cvui::text(cv::format("%3d", _pEct->PBitalMonitor()->GetHB()), 2.0);
+		if (_pEct->PBitalMonitor()->IsUseDevice()) {
+			cvui::printf("HeartBeat (bpm)");
+			cvui::text(cv::format("%3d", _pEct->PBitalMonitor()->GetHB()), 2.0);
+		} else {
+			cvui::printf("HeartBeat no device");
+		}
 		cvui::endColumn();
 		cvui::text(_MainFrame, SCENE_BUFFER_POS.x, 100, "SCENE CAMERA");
 		//cv::Mat sceneDisp;
diff --git "a/\343\203\241\343\203\203\343\202\273\343\203\274\343\202\270\345\233\263.xlsx" "b/\343\203\241\343\203\203\343\202\273\343\203\274\343\202\270\345\233\263.xlsx"
index 542969e..167733b 100644
--- "a/\343\203\241\343\203\203\343\202\273\343\203\274\343\202\270\345\233\263.xlsx"
+++ "b/\343\203\241\343\203\203\343\202\273\343\203\274\343\202\270\345\233\263.xlsx"
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