Of course, NumPy arrays and similar objects can also be passed to the functions in UliEngineering. The primary purpose of a voltage reference (VREF) is to establish system accuracy. Formulas for Converting Temperature Scales: Celsius Temperature Conversion. For other R_0 values you’ll need to manually compute the polynomial and pass it to ptx_temperature(). formula to convert the voltage it gives to temperature. Otherwise, this macro performs the processing to scale ADC conversion data to 12 bits. The current git version of the UliEngineering library implements this algorithm by using precomputed polynomials that are automatically selected if you pass R_0=100.0 or R_0=1000.0 to ptx_temperature(), which is internally called from pt100_temperature() and pt1000_temperature(). note On this STM32 series, calibration data of temperature sensor corresponds to a resolution of 12 bits, this is the recommended ADC resolution to convert voltage of temperature sensor.
float temperatureC (voltage - 0.5) 100 // Converting to degrees I wonder why the formula has to be like this, the numbers and stuffs. The code (Arduino) to convert from voltage reading into temperature is as follow.
#CONVERT VOLTAGE TO TEMPERATURE FORMULA HOW TO#
This is considered sufficient for all practical applications besides reference temperature measurement in metrology (and even there a few tens of micro-degrees.įor a simple (and relatively fast-to-compute) 5th-degree polynomial, these results are astonishingly good. 1 I'm learning how to read temperature reading from a sensor from this tutorial. Where t is the temperature, R_0 is the zero-C. The formula to compute PT100/PT1000 resistance from temperature is well-known (see e.g.
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