BFPOWER/physical
2
0
Fork 0
Code Issues 2 Pull Requests Releases Activity

Migrated from uom to custom quantity implementation.

Browse Source
This commit is contained in:
Zachary Sunforge
2024-07-09 22:37:00 -07:00
parent 8a23429e5f
commit bd4908fe93
15 changed files with 604 additions and 132 deletions
Download Patch File Download Diff File Expand all files Collapse all files

30
src/transducer/part/thermistor.rs
View File

@ -1,33 +1,25 @@
use libm::{log, logf};
use uom::si::electrical_resistance::ohm;
use uom::si::quantities::{ThermodynamicTemperature, ElectricalResistance};
use uom::si::thermodynamic_temperature::kelvin;
use crate::quantity::{Kelvins, Ohms};
/// Convert thermistor resistance to a temperature using beta parameter equation
pub fn convert_beta(
resistance: ElectricalResistance<f32>,
resistance: Ohms<f32>,
beta: f32,
reference_temp: ThermodynamicTemperature<f32>,
reference_resist: ElectricalResistance<f32>,
) -> ThermodynamicTemperature<f32> {
let ohms = resistance.get::<ohm>();
let reference_kelvin = reference_temp.get::<kelvin>();
let reference_ohms = reference_resist.get::<ohm>();
let result_kelvin = 1.0 / ((1.0 / reference_kelvin) + (1.0 / beta) * logf(ohms / reference_ohms));
ThermodynamicTemperature::new::<kelvin>(result_kelvin)
reference_temp: Kelvins<f32>,
reference_resist: Ohms<f32>,
) -> Kelvins<f32> {
let kelvins = 1.0 / ((1.0 / reference_temp.0) + (1.0 / beta) * logf(resistance.0 / reference_resist.0));
Kelvins(kelvins)
}
/// Convert thermistor resistance to a temperature using Steinhart-Hart equation
pub fn convert_steinhart(
resistance: ElectricalResistance<f32>,
resistance: Ohms<f64>,
a: f64,
b: f64,
c: f64,
) -> ThermodynamicTemperature<f32> {
let ohms = resistance.get::<ohm>() as f64;
let log_omhs = log(ohms);
) -> Kelvins<f32> {
let log_omhs = log(resistance.0);
let kelvins = 1.0 / (a + b * log_omhs + c * log_omhs * log_omhs * log_omhs);
ThermodynamicTemperature::new::<kelvin>(kelvins as f32)
Kelvins(kelvins as f32)
}