diff --git a/HPPA/ResononNirImager.cpp b/HPPA/ResononNirImager.cpp
index afb9750..0536461 100644
--- a/HPPA/ResononNirImager.cpp
+++ b/HPPA/ResononNirImager.cpp
@@ -104,20 +104,25 @@ void ResononNirImager::setSpectraBin(int new_spectral_bin)
 double ResononNirImager::auto_exposure()
 {
 	//第一步：先设置曝光时间为在当前帧率情况下最大
-	double x = 1 / getFramerate() * 1000;//获取最大毫秒曝光时间
+	double f = getFramerate();
+	double x = 1 / f * 1000;//获取最大毫秒曝光时间
+	std::cout << f << "hz帧率下，最大曝光时间为" << x << std::endl;
+
 	reConnectImage();
 	setIntegrationTime(x);
 
 	//第二步：通过循环寻找最佳曝光时间
 	imagerStartCollect();
 
+	double tmpTime;
 	while (true)
 	{
 		getFrame(buffer);
-		if (GetMaxValue(buffer, m_FrameSize) >= 4095)
+		if (GetMaxValue(buffer, m_FrameSize) >= 16383)
 		{
-			setIntegrationTime(getIntegrationTime() * 0.8);
-			std::cout << "自动曝光-----------" << std::endl;
+			tmpTime = getIntegrationTime() * 0.8;
+			setIntegrationTime(tmpTime);
+			std::cout << "自动曝光-----------：" << tmpTime << std::endl;
 		}
 		else
 		{
@@ -136,6 +141,22 @@ double ResononNirImager::auto_exposure()
 	return exposureTime;
 }
 
+unsigned short ResononNirImager::GetMaxValue(unsigned short* dark, int number)
+{
+	unsigned int max = 0;
+	for (size_t i = 0; i < number; i++)
+	{
+		if (dark[i] > 16383) continue;//IR L为14位
+
+		if (dark[i] > max)
+		{
+			max = dark[i];
+		}
+	}
+	std::cout << "本帧最大值为" << max << std::endl;
+	return max;
+}
+
 double ResononNirImager::getWavelengthAtBand(int band)
 {
 	return m_ResononNirImager.get_wavelength_at_band(band);
@@ -412,7 +433,7 @@ void ResononNirImager::WriteHdr()
 	outfile << "ENVI\n";
 	outfile << "interleave = bil\n";
 	outfile << "data type = 12\n";
-	outfile << "bit depth = 12\n";
+	outfile << "bit depth = 14\n";
 	outfile << "byte order = 0\n";
 	outfile << "samples = " << getSampleCount() << "\n";
 	outfile << "bands = " << getBandCount() << "\n";
diff --git a/HPPA/ResononNirImager.h b/HPPA/ResononNirImager.h
index e518888..b4aab30 100644
--- a/HPPA/ResononNirImager.h
+++ b/HPPA/ResononNirImager.h
@@ -38,6 +38,8 @@ public:
 	void WriteHdr();
 
 protected:
+	unsigned short GetMaxValue(unsigned short* dark, int number);
+
 private:
 	void reConnectImage();