115 lines
2.1 KiB
Go
115 lines
2.1 KiB
Go
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package thermocouple
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import (
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"th7/data/thermocouple"
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)
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const (
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S_MAX_C = 1768.1
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S_MIN_C = -50.0
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S_MAX_UV = 18693.0
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S_MIN_UV = -235.0
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)
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func s_c_to_uv(c float64) (float64, error) {
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if c < S_MIN_C || c > S_MAX_C {
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return 0, thermocouple.ErrC
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}
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var c0, c1, c2, c3, c4, c5, c6, c7, c8, E float64
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if c < 1064.18 {
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c0 = 0.0
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c1 = 5.40313308631
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c2 = 1.25934289740e-2
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c3 = -2.32477968689e-5
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c4 = 3.22028823036e-8
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c5 = -3.31465196389e-11
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c6 = 2.55744251786e-14
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c7 = -1.25068871393e-17
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c8 = 2.71443176145e-21
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} else if c < 1664.5 {
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c0 = 1.32900445085e3
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c1 = 3.34509311344
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c2 = 6.45805192818e-3
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c3 = -1.64856259209e-6
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c4 = 1.29989605174e-11
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c5 = 0.0
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c6 = 0.0
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c7 = 0.0
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c8 = 0.0
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} else {
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c0 = 1.46628232636e5
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c1 = -2.58430516752e2
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c2 = 1.63693574641e-1
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c3 = -3.30439046987e-5
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c4 = -9.43223690612e-12
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c5 = 0.0
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c6 = 0.0
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c7 = 0.0
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c8 = 0.0
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}
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E = c0 + c*(c1+c*(c2+c*(c2+c*(c3+c*(c4+c*(c5+c*(c6+c*(c7+c*(c8)))))))))
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return E, nil
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}
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func s_uv_to_c(uv float64) (float64, error) {
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if uv < S_MIN_UV || uv > S_MAX_UV {
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return 0, thermocouple.ErrUV
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}
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var c0, c1, c2, c3, c4, c5, c6, c7, c8, c9, T float64
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if uv < 1874.0 {
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c0 = 0.0
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c1 = 1.84949460e-1
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c2 = -8.00504062e-5
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c3 = 1.02237430e-7
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c4 = -1.52248592e-10
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c5 = 1.88821343e-13
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c6 = -1.59085941e-16
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c7 = 8.23027890e-20
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c8 = -2.34181944e-23
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c9 = 2.79786260e-27
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} else if uv < 11950.0 {
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c0 = 1.291507177e1
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c1 = 1.466298863e-1
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c2 = -1.534713402e-5
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c3 = 3.145945973e-9
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c4 = -4.163257839e-13
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c5 = 3.187963771e-17
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c6 = -1.291637500e-21
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c7 = 2.183475087e-26
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c8 = -1.447379511e-31
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c9 = 8.211272125e-36
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} else if uv < 17536.0 {
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c0 = -8.087801117e1
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c1 = 1.621573104e-1
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c2 = -8.536869453e-6
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c3 = 4.719686453e-10
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c4 = -1.441693666e-14
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c5 = 2.081618890e-19
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c6 = 0.0
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c7 = 0.0
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c8 = 0.0
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c9 = 0.0
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} else {
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c0 = 5.333875126e4
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c1 = -1.235892298e1
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c2 = 1.092657613e-3
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c3 = -4.265693686e-8
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c4 = 6.247205420e-13
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c5 = 0.0
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c6 = 0.0
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c7 = 0.0
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c8 = 0.0
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c9 = 0.0
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}
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T = c0 + uv*(c1+uv*(c2+uv*(c3+uv*(c4+uv*(c5+uv*(c6+uv*(c7+uv*(c8+uv*(c9)))))))))
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return T, nil
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}
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