从中找出数据的头，然后读取数据
if (readedDataBuffer.Count >= 20)
{
int removeCount = 0;
for (int i = 0; i < readedDataBuffer.Count - 18; ++i)
{
// 14 7B节点
if (readedDataBuffer[i] == 0xFD & readedDataBuffer[i + 4] == 0x28 & readedDataBuffer[i + 5] == 0x7B)
{
byte[] data = new byte[20];
/*节点*/
int data31, data32;
double v3, T3;
data31 = readedDataBuffer[i + 12];//高八位
data32 = readedDataBuffer[i + 13];//低八位
v3 = (data31 * 256 + data32);//电压值
T3 = -39.66 + 0.01 * v3 + 0.026;
tcure = T3;
wendu = T3.ToString();
}
removeCount++;
}
} 
