protected virtual void                              Dispose(bool aDisposing)
        {
            if (!mDisposed)
            {
                if (aDisposing)
                {
                    if (mFilter != null)
                    {
                        mFilter.Dispose();
                        mFilter = null;
                    }
                }

                mDisposed = true;
            }
        }
 public AnalogSensor()
 {
     mFilter = new BackValueFilter(this, 500);
 }