处理传感器数据的程序，例如测距传感器。去掉一个最大值，去掉一个最小值，然后8个数据取平均值。结果去除了部分噪声，减少了误差。(program that deals with sensor data, such as a range finder. Remove a maximum, remove a minimum, and then take the average of the 8 data. As a result, partial noise is removed and error is reduced.)