Ov = [(Osh - Osl) * (Iv - Isl) / (Ish - Isl)] + Osl
Ov = scaled output value
Iv = analog input value
Osh = high limit of the scale for the scaled output value
Osl = low limit of the scale for the scaled output value
Ish = high limit of the scale for the analog input value
Isl = low limit of the scale for the analog input value
参考这个公式