/// <summary>
/// 显示数据
/// </summary>
/// <param name="data">数据</param>
private void ShowEdgeData(double[] data, List <int> edgeIndexs, DigitEdgeType digitEdgeType)
{
int SampleInterval = 1;
var collection = new ObservableCollection <Data>();
for (int i = 0; i < data.Length / SampleInterval; i++)
{
collection.Add(new Data()
{
Value1 = data[i * SampleInterval], Value = i * 1000.0 / ((int)Scope.SampleRate) * SampleInterval
});
}
var collection2 = new ObservableCollection <Data>();
if ((digitEdgeType == DigitEdgeType.FirstFillingEdge) || (digitEdgeType == DigitEdgeType.FirstRisingEdge))
{
foreach (var item in edgeIndexs)
{
//collection.Add(new Data() { Value1 = ScopeCHACollection[item / SampleInterval].Value1, Value = item * 1000.0 / ((int)Scope.SampleRate) * SampleInterval });
collection2.Add(new Data()
{
Value1 = collection[item / SampleInterval].Value1, Value = collection[item / SampleInterval].Value
});
}
}
ScopeCHACollection = collection;
ScopeCHAEdgeCollection = collection2;
}
/// <summary>
/// 分析脉冲数据
/// </summary>
/// <param name="edgeIndexs">边沿索引</param>
/// <param name="isRisingFirst">首边沿为上升沿标志位</param>
/// <param name="sampleRate"></param>
/// <param name="frequencies"></param>
/// <param name="dutyRatios"></param>
public static void AnalysePulseData(List <int> edgeIndexs, DigitEdgeType digitEdgeType, int sampleRate, out List <double> frequencies, out List <double> dutyRatios)
{
frequencies = new List <double>();
dutyRatios = new List <double>();
if ((edgeIndexs == null) ||
(edgeIndexs.Count == 0) ||
(digitEdgeType == DigitEdgeType.CriticalLevel) ||
(digitEdgeType == DigitEdgeType.HeightLevel) ||
(digitEdgeType == DigitEdgeType.LowLevel))
{
return;
}
int firstRisingIndex = (digitEdgeType == DigitEdgeType.FirstRisingEdge) ? 0 : 1;
int tempCount1 = 0;
int tempCount2 = 0;
//当前脉冲的频率及占空比分析
while (firstRisingIndex + 2 < edgeIndexs.Count)
{
tempCount1 = edgeIndexs[firstRisingIndex + 2] - edgeIndexs[firstRisingIndex];
tempCount2 = edgeIndexs[firstRisingIndex + 1] - edgeIndexs[firstRisingIndex];
frequencies.Add((double)sampleRate / (double)tempCount1);
dutyRatios.Add((double)(tempCount2) / (double)(tempCount1));
firstRisingIndex += 2;
}
}
/// <summary>
/// 只有单个下降沿
/// </summary>
/// <param name="edgeIndexs">边沿索引</param>
/// <param name="isRisingFirst">首边沿为上升沿标志位</param>
/// <returns>结果</returns>
public static bool IsOnlyFillingEdge(List <int> edgeIndexs, DigitEdgeType digitEdgeType)
{
if (edgeIndexs == null || edgeIndexs.Count == 0)
{
throw new ArgumentException($"{nameof(edgeIndexs)}无效");
}
if ((digitEdgeType == DigitEdgeType.FirstFillingEdge) && (edgeIndexs.Count == 1))
{
return(true);
}
return(false);
}
/// <summary>
/// 通过阈值查找边沿
/// </summary>
/// <param name="source">数据源</param>
/// <param name="minThreshold">最小阈值</param>
/// <param name="maxThreshold">最大阈值</param>
/// <param name="edgeIndexs">边沿索引</param>
/// <param name="isRisingFirst">首边沿为上升沿标志位</param>
public static void FindEdgeByThreshold(double[] source, double minThreshold, double maxThreshold, out List <int> edgeIndexs, out DigitEdgeType digitEdgeType)
{
if (source == null || source.Length == 0)
{
throw new ArgumentException($"{nameof(source)}无效");
}
if (minThreshold > maxThreshold)
{
throw new ArgumentException($"{nameof(minThreshold)}({minThreshold})不得大于{nameof(maxThreshold)}({maxThreshold})");
}
edgeIndexs = new List <int>();
digitEdgeType = DigitEdgeType.CriticalLevel;
//当前位置,0-最大阈值与最小阈值之间,-1小于最小阈值,1-大于最大阈值
int currentLocation = 0;
if (source[0] >= maxThreshold)
{
digitEdgeType = DigitEdgeType.HeightLevel;
currentLocation = 1;
}
else if (source[0] <= minThreshold)
{
digitEdgeType = DigitEdgeType.LowLevel;
currentLocation = -1;
}
else
{
digitEdgeType = DigitEdgeType.CriticalLevel;
currentLocation = 0;
}
for (int i = 1; i < source.Length; i++)
{
switch (currentLocation)
{
case 1:
if (digitEdgeType == DigitEdgeType.CriticalLevel)
{
digitEdgeType = DigitEdgeType.HeightLevel;
}
//当前在顶部,查找下降沿
if (source[i] <= minThreshold)
{
edgeIndexs.Add(i);
currentLocation = -1;
if (digitEdgeType == DigitEdgeType.HeightLevel)
{
digitEdgeType = DigitEdgeType.FirstFillingEdge;
}
}
break;
case -1:
if (digitEdgeType == DigitEdgeType.CriticalLevel)
{
digitEdgeType = DigitEdgeType.LowLevel;
}
//当前在底部,查找上升沿
if (source[i] >= maxThreshold)
{
edgeIndexs.Add(i);
currentLocation = 1;
if (digitEdgeType == DigitEdgeType.LowLevel)
{
digitEdgeType = DigitEdgeType.FirstRisingEdge;
}
}
break;
default:
//查找下降沿
if (source[i] <= minThreshold)
{
currentLocation = -1;
}
//查找上升沿
if (source[i] >= maxThreshold)
{
currentLocation = 1;
}
break;
}
}
}