Device::USB::PCSensor::HidTEMPer::NTC::External(3pm) User Contributed Perl Documentation Device::USB::PCSensor::HidTEMPer::NTC::External(3pm)
Device::USB::PCSensor::HidTEMPer::NTC::Internal - The HidTEMPerNTC external sensor
VERSION
Version 0.02
SYNOPSIS
None
DESCRIPTION
This is the implementation of the HidTEMPerNTC external sensor.
CONSTANTS
o MAX_TEMPERATURE
The highest temperature(150 degrees celsius) this sensor can detect.
o MIN_TEMPERATURE
The lowest temperature(-50 degrees celsius) this sensor can detect.
o INITIAL_GAIN
The initial gain value used to calculate voltage returned
o CALIBRATION_VALUES
Values used to calculate Volt7705Calibration
METHODS
o new()
Returns a new External sensor object.
o celsius()
Returns the current temperature from the device in celsius degrees.
The formula used to calculate value based on a calibrated key value is created using the Eureqa tool from Cornell Computational
Synthesis Lab, http://ccsl.mae.cornell.edu/eureqa.
Resulting in the use of this formula instead of the provided number list: f(y)=66.7348/(66.7275/(67.8088 - 9.70353*log(0.000251309 +
y*y)) - 0.21651)
If you find another formula that is more accurate please drop me a line. The data used can be found in the source code of this file.
INHERIT METHODS FROM
Device::USB::PCSensor::HidTEMPer::Sensor
DEPENDENCIES
This module internally includes and takes use of the following packages:
use Carp;
use Time::HiRes qw / sleep /;
use Device::USB::PCSensor::HidTEMPer::Sensor;
This module uses the strict and warning pragmas.
BUGS
Please report any bugs or missing features using the CPAN RT tool.
FOR MORE INFORMATION
None
AUTHOR
Magnus Sulland < msulland@cpan.org >
ACKNOWLEDGEMENTS
This code includes findings done by Robin B. Jensen, http://www.drunkardswalk.dk, when converting the received hex values into volt.
COPYRIGHT &; LICENSE
Copyright (c) 2010 Magnus Sulland
This program is free software; you can redistribute it and/or modify it under the same terms as Perl itself.
perl v5.10.1 2010-07-24 Device::USB::PCSensor::HidTEMPer::NTC::External(3pm)