Diff: Filterdesign2.cpp

Revision:

11:17b1d5f5370b

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/Filterdesign2.cpp	Thu Oct 08 13:55:30 2015 +0000
@@ -0,0 +1,102 @@
+#include "Filterdesign2.h"
+#include "Filter.h"
+#include "Meanvalue.h"
+
+// Inputwaardes
+
+
+//Notch 50Hz
+
+// Filter1a: 50Hz Notch
+double v1_50a = 0, v2_50a = 0;
+const double a1_50a = -4.45738754850584, a2_50a = 0.0;
+const double b0_50a = 1.00000000000, b1_50a = -4.45738754850584, b2_50a = 0.0;
+const double gain_50a = 1.000000;
+
+// Filter1b: 50Hz Notch
+double v1_50b = 0, v2_50b = 0;
+const double a1_50b = 6.24687974012662, a2_50b = 9.7558766219011;
+const double b0_50b = 1.00000000000, b1_50b = 6.24687974012659, b2_50b = 9.75279168287705;
+const double gain_50b = 1.0;
+
+// Filter1c: 50Hz Notch
+double v1_50c = 0, v2_50c = 0;
+const double a1_50c = -1.93013451976033, a2_50c = 0.931354816092608;
+const double b0_50c = 1.00000000000, b1_50c = -1.9313551886007, b2_50c = 0.931355188600704;
+const double gain_50c = 1.0;
+
+
+//HighPass 20Hz
+
+// Filter2a: 20Hz HighPass
+double v1_HPa = 0, v2_HPa = 0;
+const double a1_HPa = 1.67405904258534, a2_HPa = 0.0;
+const double b0_HPa = 1.00000000000, b1_HPa = 1.64732093404315, b2_HPa = 0.00000000000;
+const double gain_HPa = 0.510419;
+
+// Filter2b: 20Hz HighPass
+double v1_HPb = 0, v2_HPb = 0;
+const double a1_HPb = -1.67405904258534, a2_HPb = 0.70061841951544;
+const double b0_HPb = 1.00000000000, b1_HPb = -1.70079715112754, b2_HPb = 0.700797151127544;
+const double gain_HPb = 1.0;
+
+
+//LowPass 3Hz
+
+// Filter3a: 3Hz LowPass
+double v1_LPa = 0, v2_LPa = 0;
+const double a1_LPa = -0.000346314708316864, a2_LPa = 0.0;
+const double b0_LPa = 1.00000000000, b1_LPa = 1.94667622076668, b2_LPa = 0.00000000000;
+const double gain_LPa = 1.0;
+
+// Filter3b: 3Hz LowPass
+double v1_LPb = 0, v2_LPb = 0;
+const double a1_LPb = -0.00103894412495059, a2_LPb = 2.39867754393189e-07;
+const double b0_LPb = 1.00000000000, b1_LPb = -1.94806147959995, b2_LPb = 0.94806147959995;
+const double gain_LPb = 1.0;
+
+
+
+// constante variabelen:
+
+double gem = 0.4557; // gemiddelde waarde emgsignaal
+
+//gemiddelde bepalen
+double sum = 0;
+int a = 0;
+int delay = 40;
+int samples_length = 10;
+
+
+void Filterdesign1(double u, double &y, double &ymean)
+{
+    //u = input waarde
+    //y = output waarde
+
+    u = u - gem; // lees waarde van emg signaal uit
+
+    // Op deze manier worden de waardes ingelezen in Filter. Zorg dus voor dezelfde volgorde, zodat de waardes goed uitgelezen worden!:
+    // Filter(double u, double &v1, double &v2, const double a1, const double a2, const double b0, const double b1, const double b2, const double gain)
+
+    // 50Hz Notch filter
+    double y50a = Filter(u, v1_50a, v2_50a, a1_50a, a2_50a, b0_50a, b1_50a, b2_50a, gain_50a);
+    double y50b = Filter(y50a, v1_50b, v2_50b, a1_50b, a2_50b, b0_50b, b1_50b, b2_50b, gain_50b);
+    double y50c = Filter(y50b, v1_50c, v2_50c, a1_50c, a2_50c, b0_50c, b1_50c, b2_50c, gain_50c);
+
+    // High Pass filter. Tot 20Hz wordt weggefliterd
+    double yHPa = Filter(y50c, v1_HPa, v2_HPa, a1_HPa, a2_HPa, b0_HPa, b1_HPa, b2_HPa, gain_HPa);
+    double yHPb = Filter(yHPa, v1_HPb, v2_HPb, a1_HPb, a2_HPb, b0_HPb, b1_HPb, b2_HPb, gain_HPb);
+
+    // Absolute waarde wordt genomen.
+    double y1 = fabs(yHPb);
+
+    // Low Pass filter. Alles vanaf 5Hz wordt weggefilterd
+    double yLPa = Filter(y1, v1_LPa, v2_LPa, a1_LPa, a2_LPa, b0_LPa, b1_LPa, b2_LPa, gain_LPa);
+    double yLPb = Filter(yLPa, v1_LPb, v2_LPb, a1_LPb, a2_LPb, b0_LPb, b1_LPb, b2_LPb, gain_LPb);
+
+    y = yLPb;
+
+    //ymean = Meanvalue(y, sum, a, ymean, delay);
+    ymean = Meansmooth(y, samples_length, ymean);
+
+}
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