diff --git a/doc/灰色预测模型.cs b/doc/灰色预测模型.cs
new file mode 100644
index 00000000..341b99ce
--- /dev/null
+++ b/doc/灰色预测模型.cs
@@ -0,0 +1,132 @@
+using System;
+using System.Collections.Generic;
+using System.Text;
+
+namespace YOMIFrameWork.Common
+{
+    /// <summary>
+    /// 灰色预测
+    /// </summary>
+    public class GrayModel
+    {
+        private static GrayModel _Instrance = null;
+        public static GrayModel Instrance
+        {
+            get { if (_Instrance == null) return new GrayModel(); else return _Instrance; }
+        }
+        public double GetNext(List<double> data)
+        {
+            //开始计算
+            //一次累加begin
+            int number = data.Count;
+            double[] aArray = new double[number];//原始数据
+            double[] bArray = new double[number];//一次累加的结果
+            for (int i = 0; i < number; i++)
+            {
+                aArray[i] = data[i];
+            }
+            bArray[0] = aArray[0];
+            for (int x = 1; x < number; x++)
+            {
+                bArray[x] = bArray[x - 1] + aArray[x];
+            }
+            //end
+            //计算均值系列begin
+
+            double[] cArray = new double[number]; //均值计算的结果
+
+            cArray[0] = 0.0;
+
+            for (int x = 1; x < number; x++)
+            {
+
+                cArray[x] = bArray[x - 1] / 2 + bArray[x] / 2;
+            }
+            //end
+
+            //计算C,D,E,F
+            //计算C
+            double[] dArray = new double[number];
+            dArray[1] = cArray[1];
+            for (int x = 1; x < number; x++)
+            {
+
+                dArray[x] = cArray[x] + dArray[x - 1];
+
+            }
+
+            double C;
+            C = dArray[number - 1];
+            //end
+
+            //计算D
+            double[] fArray = new double[number];
+            fArray[1] = aArray[1];
+
+            for (int x = 1; x < number; x++)
+            {
+
+                fArray[x] = aArray[x] + fArray[x - 1];
+
+            }
+            double D;
+            D = fArray[number - 1];
+            //end
+
+            //计算E
+            double[] gArray = new double[number];
+            gArray[1] = aArray[1] * cArray[1];
+            for (int x = 1; x < number; x++)
+            {
+
+                gArray[x] = aArray[x] * cArray[x] + gArray[x - 1];
+
+            }
+            double E;
+            E = gArray[number - 1];
+            //end
+
+            //计算F
+            double[] hArray = new double[number];
+            hArray[1] = cArray[1] * cArray[1];
+            for (int x = 1; x < number; x++)
+            {
+
+                hArray[x] = cArray[x] * cArray[x] + hArray[x - 1];
+
+            }
+            double F;
+            F = hArray[number - 1];
+            //end
+
+            //计算a,b
+            //计算发展系数a begin
+
+            //textBox2.Text = "";
+            double a;
+
+            a = (C * D - (number - 1) * E) / ((number - 1) * F - C * C);
+            //textBox2.Text = a.ToString();
+            //end
+
+            //计算灰作用量b begin
+            //textBox3.Text = "";
+            double b;
+            b = (D * F - C * E) / ((number - 1) * F - C * C);
+            //textBox3.Text = b.ToString();
+            //end
+
+            //计算q
+            double q;
+            q = b / a;
+            //end
+
+            //istBox4.Items.Clear();
+            double ssn1 = (aArray[0] - q) * Math.Exp(-a * (number)) + q;
+            double ssn = (aArray[0] - q) * Math.Exp(-a * (number - 1)) + q;
+
+            return (ssn1 - ssn);
+        }
+    }
+
+}
\ No newline at end of file
diff --git a/safesite/templates/equipment.html b/safesite/templates/equipment.html
index 3894dac2..fdf8f432 100644
--- a/safesite/templates/equipment.html
+++ b/safesite/templates/equipment.html
@@ -121,7 +121,7 @@
         <p style="color:red;margin-left: 10px">请按模板录入后导入</p>
         <p style="margin-left: 10px"><a href="/static/safesite/muban/equipment.xlsx" target="_blank">点击下载模板</a></p>
         <p style="margin-left: 10px">录入完成后点击下方按钮上传文件</p>
-        <input type="file" id="drfile" name="" accept=".xls,.xlsx" style="margin-left: 10px" />
+        <input type="file" id="drfile" name="" accept=".xlsx" style="margin-left: 10px" />
     </div>
     <div id="bindjcbdg" class="easyui-dialog" title="绑定检查表" style="width:400px;height:200px;padding: 10px;"
         data-options="resizable:true,modal:true,closed:true,border:false,buttons:'#dlg-buttons'">