99 lines
1.8 KiB
Go
99 lines
1.8 KiB
Go
|
package thermocouple
|
||
|
|
|
||
|
|
import (
|
||
|
|
"th7/data/thermocouple"
|
||
|
|
)
|
||
|
|
|
||
|
|
const (
|
||
|
|
N_MAX_C = 1300.0
|
||
|
|
N_MIN_C = -200.0 // no polynomials for range -270 to -200
|
||
|
|
N_MAX_UV = 47512.0
|
||
|
|
N_MIN_UV = -3990.0
|
||
|
|
)
|
||
|
|
|
||
|
|
func n_c_to_uv(c float64) (float64, error) {
|
||
|
|
|
||
|
|
if c < N_MIN_C || c > N_MAX_C {
|
||
|
|
return 0, thermocouple.ErrC
|
||
|
|
}
|
||
|
|
|
||
|
|
var c0, c1, c2, c3, c4, c5, c6, c7, c8, c9, c10, E float64
|
||
|
|
|
||
|
|
if c < 0.0 {
|
||
|
|
c0 = 0.0
|
||
|
|
c1 = 2.6159105962e1
|
||
|
|
c2 = 1.0957484228e-2
|
||
|
|
c3 = -9.3841111554e-5
|
||
|
|
c4 = -4.6412039759e-8
|
||
|
|
c5 = -2.6303357716e-9
|
||
|
|
c6 = -2.2653438003e-11
|
||
|
|
c7 = -7.6089300791e-14
|
||
|
|
c8 = -9.3419667835e-17
|
||
|
|
c9 = 0.0
|
||
|
|
c10 = 0.0
|
||
|
|
} else {
|
||
|
|
c0 = 0.0
|
||
|
|
c1 = 2.5929394601e1
|
||
|
|
c2 = 1.5710141880e-2
|
||
|
|
c3 = 4.3825627237e-5
|
||
|
|
c4 = -2.5261169794e-7
|
||
|
|
c5 = 6.4311819399e-10
|
||
|
|
c6 = -1.0063471519e-12
|
||
|
|
c7 = 9.9745338992e-16
|
||
|
|
c8 = -6.0863245607e-19
|
||
|
|
c9 = 2.0849229339e-22
|
||
|
|
c10 = -3.0682196151e-26
|
||
|
|
}
|
||
|
|
|
||
|
|
E = c0 + c*(c1+c*(c2+c*(c3+c*(c4+c*(c5+c*(c6+c*(c7+c*(c8+c*(c9+c*(c10))))))))))
|
||
|
|
return E, nil
|
||
|
|
|
||
|
|
}
|
||
|
|
|
||
|
|
func n_uv_to_c(uv float64) (float64, error) {
|
||
|
|
|
||
|
|
if uv < N_MIN_UV || uv > N_MAX_UV {
|
||
|
|
return 0, thermocouple.ErrUV
|
||
|
|
}
|
||
|
|
|
||
|
|
var c0, c1, c2, c3, c4, c5, c6, c7, c8, c9, T float64
|
||
|
|
|
||
|
|
if uv < 0.0 {
|
||
|
|
c0 = 0.0
|
||
|
|
c1 = 3.8436847e-2
|
||
|
|
c2 = 1.1010485e-6
|
||
|
|
c3 = 5.2229312e-9
|
||
|
|
c4 = 7.2060525e-12
|
||
|
|
c5 = 5.8488586e-15
|
||
|
|
c6 = 2.7754916e-18
|
||
|
|
c7 = 7.7075166e-22
|
||
|
|
c8 = 1.1582665e-25
|
||
|
|
c9 = 7.3138868e-30
|
||
|
|
} else if uv < 20613.0 {
|
||
|
|
c0 = 0.0
|
||
|
|
c1 = 3.86896e-2
|
||
|
|
c2 = -1.08267e-6
|
||
|
|
c3 = 4.70205e-11
|
||
|
|
c4 = -2.12169e-18
|
||
|
|
c5 = -1.17272e-19
|
||
|
|
c6 = 5.39280e-24
|
||
|
|
c7 = -7.98156e-29
|
||
|
|
c8 = 0.0
|
||
|
|
c9 = 0.0
|
||
|
|
} else {
|
||
|
|
c0 = 1.972485e1
|
||
|
|
c1 = 3.300943e-2
|
||
|
|
c2 = -3.915159e-7
|
||
|
|
c3 = 9.855391e-12
|
||
|
|
c4 = -1.274371e-16
|
||
|
|
c5 = 7.767022e-22
|
||
|
|
c6 = 0.0
|
||
|
|
c7 = 0.0
|
||
|
|
c8 = 0.0
|
||
|
|
c9 = 0.0
|
||
|
|
}
|
||
|
|
|
||
|
|
T = c0 + uv*(c1+uv*(c2+uv*(c3+uv*(c4+uv*(c5+uv*(c6+uv*(c7+uv*(c8+uv*(c9)))))))))
|
||
|
|
return T, nil
|
||
|
|
}
|