c51编写防脉冲干扰加权平均值滤波程序
时间: 2024-06-13 14:06:48 浏览: 11
以下是c51编写防脉冲干扰加权平均值滤波程序的示例代码:
```c
#include <reg52.h>
#define N 10 // 滤波器长度
#define M 5 // 限幅值
unsigned char filter(unsigned char new_value);
void main()
{
unsigned char value;
while (1)
{
value = filter(get_ad()); // 获取采样值并进行滤波
// 处理滤波后的值
}
}
unsigned char filter(unsigned char new_value)
{
static unsigned char buffer[N] = {0}; // 静态数组作为滤波器缓存
unsigned char i;
unsigned int sum = 0;
unsigned char max = 0, min = 255;
// 将新采样值插入滤波器缓存
for (i = N - 1; i > 0; i--)
{
buffer[i] = buffer[i - 1];
}
buffer[0] = new_value;
// 限幅处理
for (i = 0; i < N; i++)
{
if (buffer[i] > max)
{
max = buffer[i];
}
if (buffer[i] < min)
{
min = buffer[i];
}
}
if (max - min > M)
{
return buffer[0]; // 超过限幅值,返回当前采样值
}
// 加权平均值滤波
for (i = 0; i < N; i++)
{
sum += (N - i) * buffer[i];
}
return sum / ((N + 1) * N / 2);
}
```