Barometer Class#
- class rocketpy.sensors.Barometer[source]#
Class for the barometer sensor
- Variables:
prints (
_SensorPrints
) – Object that contains the print functions for the sensor.sampling_rate (
float
) – Sample rate of the sensor in Hz.orientation (
tuple
,list
) – Orientation of the sensor in the rocket.measurement_range (
float
,tuple
) – The measurement range of the sensor in Pa.resolution (
float
) – The resolution of the sensor in Pa/LSB.noise_density (
float
) – The noise density of the sensor in Pa/√Hz.noise_variance (
float
) – The variance of the noise of the sensor in Pa^2.random_walk_density (
float
) – The random walk density of the sensor in Pa/√Hz.random_walk_variance (
float
) – The variance of the random walk of the sensor in Pa^2.constant_bias (
float
) – The constant bias of the sensor in Pa.operating_temperature (
float
) – The operating temperature of the sensor in Kelvin.temperature_bias (
float
) – The temperature bias of the sensor in Pa/K.temperature_scale_factor (
float
) – The temperature scale factor of the sensor in %/K.name (
str
) – The name of the sensor.measurement (
float
) – The measurement of the sensor after quantization, noise and temperature drift.measured_data (
list
) – The stored measured data of the sensor after quantization, noise and temperature drift.
- __init__(sampling_rate, measurement_range=inf, resolution=0, noise_density=0, noise_variance=1, random_walk_density=0, random_walk_variance=1, constant_bias=0, operating_temperature=25, temperature_bias=0, temperature_scale_factor=0, name='Barometer')[source]#
Initialize the barometer sensor
- Parameters:
sampling_rate (
float
) – Sample rate of the sensor in Hz.measurement_range (
float
,tuple
, optional) – The measurement range of the sensor in Pa. If a float, the same range is applied both for positive and negative values. If a tuple, the first value is the positive range and the second value is the negative range. Default is np.inf.resolution (
float
, optional) – The resolution of the sensor in Pa/LSB. Default is 0, meaning no quantization is applied.noise_density (
float
, optional) – The noise density of the sensor for a Gaussian white noise in Pa/√Hz. Sometimes called “white noise drift”, “angular random walk” for gyroscopes, “velocity random walk” for accelerometers or “(rate) noise density”. Default is 0, meaning no noise is applied.noise_variance (
float
, optional) – The noise variance of the sensor for a Gaussian white noise in Pa^2. Default is 1, meaning the noise is normally distributed with a standard deviation of 1 Pa.random_walk_density (
float
, optional) – The random walk of the sensor for a Gaussian random walk in Pa/√Hz. Sometimes called “bias (in)stability” or “bias drift””. Default is 0, meaning no random walk is applied.random_walk_variance (
float
, optional) – The random walk variance of the sensor for a Gaussian random walk in Pa^2. Default is 1, meaning the noise is normally distributed with a standard deviation of 1 Pa.constant_bias (
float
, optional) – The constant bias of the sensor in Pa. Default is 0, meaning no constant bias is applied.operating_temperature (
float
, optional) – The operating temperature of the sensor in Kelvin. At 298.15 K (25 °C), the sensor is assumed to operate ideally, no temperature related noise is applied. Default is 298.15.temperature_bias (
float
, optional) – The temperature bias of the sensor in Pa/K. Default is 0, meaning no temperature bias is applied.temperature_scale_factor (
float
, optional) – The temperature scale factor of the sensor in %/K. Default is 0, meaning no temperature scale factor is applied.name (
str
, optional) – The name of the sensor. Default is “Barometer”.
- Return type:
None
See also
TODO
- measure(time, **kwargs)[source]#
Measures the pressure at barometer location
- Parameters:
time (
float
) – Current time in seconds.kwargs (
dict
) –Keyword arguments dictionary containing the following keys: - u : np.array
State vector of the rocket.
- u_dotnp.array
Derivative of the state vector of the rocket.
- relative_positionnp.array
Position of the sensor relative to the rocket center of mass.
- environmentEnvironment
Environment object containing the atmospheric conditions.
- export_measured_data(filename, file_format='csv')[source]#
Export the measured values to a file
- Parameters:
filename (
str
) – Name of the file to export the values tofile_format (
str
) – file_format of the file to export the values to. Options are “csv” and “json”. Default is “csv”.
- Return type:
None