stella.sensor

Class DewPointConvert

java.lang.Object

util.PropertyContainer

stella.sensor.AbstractConversion

stella.sensor.DewPointConvert

All Implemented Interfaces:

Serializable, Cloneable, ConvertToPhysical, PropertySupplying

public class DewPointConvert
extends AbstractConversion

The helper class to convert dew-point offsets in degrees centigrade to true temperatures in centigrades. To make this work under the general ConvertToPhysical contract, some dirty tricks are involved.

See Also:

Serialized Form

Field Summary

Fields

Modifier and Type	Field and Description
private double	ambient The last ambient temperature.
private static DecimalFormat	DEFVALUEFORMAT The default decimal format for the values.
private static DecimalFormat	DEFVALUESIGMA The default deciaml format for the sigma of the values.
private static long	serialVersionUID

Fields inherited from class stella.sensor.AbstractConversion

KEY_UNIT, KEY_VALUEFORMAT, KEY_VALUESIGMA

Fields inherited from class util.PropertyContainer

KEY_LISTSEPARATOR, KEY_MAPKEYVALUECHAR, KEY_MAPSEPARATOR

Fields inherited from interface util.PropertySupplying

CONFIG, KEY_CLASS

Constructor Summary

Constructors

Constructor and Description
DewPointConvert(Map info) Constructs a new cosine converter.

Method Summary

Modifier and Type	Method and Description
double	getDeviation(double raw, double dev) A dew point sensor already delivers degrees centigrade.
double	getPhysical(double raw) A dew point sensor already delivers degrees centigrade, but only the difference to the ambient temperature.
double	getRaw(double physical) A dew point sensor always delivers degrees centrigrade, but only the difference to the ambient temperature.
protected void	setAmbientTemperature(double temperature) Sets the last ambient temperature used for calculating the raw reading of the dew-point sensor.

Methods inherited from class stella.sensor.AbstractConversion

createConversion, getSigmaValueFormat, getUnit, getValueFormat

Methods inherited from class util.PropertyContainer

augment, augment, augment, augment, augment, clone, defaultBoolean, defaultChar, defaultDouble, defaultFloat, defaultInt, defaultLong, defaultObject, defaultObject, defaultProperties, defaultProperty, getAsBoolean, getAsChar, getAsDouble, getAsEnums, getAsFloat, getAsInt, getAsList, getAsLong, getAsMap, getAsMap, getAsObject, getAsObject, getProperties, getProperty, has, initProperties, isNew, parseObject, parseObject, reload, reload, removeProperty, requires, rescanned, setObject, setProperties, setProperty, stringProperties, toString

Methods inherited from class java.lang.Object

equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Field Detail

serialVersionUID

private static final long serialVersionUID

See Also:

Constant Field Values

DEFVALUEFORMAT

private static final transient DecimalFormat DEFVALUEFORMAT

The default decimal format for the values.

DEFVALUESIGMA

private static final transient DecimalFormat DEFVALUESIGMA

The default deciaml format for the sigma of the values.

ambient

private double ambient

The last ambient temperature.

Constructor Detail

DewPointConvert

public DewPointConvert(Map info)

Constructs a new cosine converter. Since the conversion does not need any additional parameters, all the properties defined for the decimal formats should be given in the properties of the solz sensor itself. Its properties are also used to construct this converter.

Method Detail

getPhysical

public double getPhysical(double raw)

A dew point sensor already delivers degrees centigrade, but only the difference to the ambient temperature. It seems feasable to change the physical value delivered by the dewpoint to the 'true' dewpoint temperature. This is only possible with a 'dirty trick'; the dew-point sensor reading-delivery method must call the conversions setAmbientTemperature(double) at each reading.

Parameters:

raw - The raw reading value.

Returns:

The raw-reading plus the ambient temperature.

getRaw

public double getRaw(double physical)

A dew point sensor always delivers degrees centrigrade, but only the difference to the ambient temperature. The physical reading is the raw reading plus the ambient temperature, therefore reconstruction of the raw reading is only possible if the ambient temperature is known.

getDeviation

public double getDeviation(double raw,
                           double dev)

A dew point sensor already delivers degrees centigrade. The deviation is unaffected by an offset.

Parameters:

raw - The raw reading value.

dev - The standard deviation of the raw readings.

Returns:

The physical quantity corresponding to the standard deviation of the raw readings.

setAmbientTemperature

protected void setAmbientTemperature(double temperature)

Sets the last ambient temperature used for calculating the raw reading of the dew-point sensor. This is a very dirty trick to make this conversion class work without an inner class construct. This method must be called whenever a dew-point sensor delivers a reading.