修改排气步骤，现在直接打开循环阀4秒就算排气了

SysPara.cpp

@@ -30,11 +30,16 @@ SysPara::SysPara(void):
     memset(&para,0,sizeof(para));
     memset(&status,0,sizeof(status));
     //qDebug("start to  loadParaFromFile.");
+
+    para.airPushDurationSec = 4;
+    
     loadParaFromFile();
     //qDebug("loadParaFromFile ok.");
     loadParaToPrintInit();
     //para.HVFaultCloseEn= 0;
 
+    qDebug() << "para.airPushDurationSec: " << para.airPushDurationSec;
+
     if(para.ReadFileErrorCnt<10) para.ReadFileErrorCnt++;
     if(para.PowerOnErrorCnt<10) para.PowerOnErrorCnt++;
     // PowerOnErrorCnt
@@ -183,6 +188,7 @@ void SysPara::loadDefaultPara(){
         para.gearPumpSpeedAlarm = 1500;
 
         para.canvasHeight = 32;
+        para.airPushDurationSec = 4;
 }
 
 void SysPara::saveParaToFile(){