Device::USB::PCSensor::HidTEMPer::NTC::Internal − The HidTEMPerNTC external sensor
Version 0.02
None
This is the implementation of the HidTEMPerNTC external sensor.
CONSTANTS
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MAX_TEMPERATURE |
The highest temperature(150 degrees celsius) this sensor can detect.
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MIN_TEMPERATURE |
The lowest temperature(−50 degrees celsius) this sensor can detect.
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INITIAL_GAIN |
The initial gain value used to calculate voltage returned
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CALIBRATION_VALUES |
Values used to calculate Volt7705Calibration
METHODS
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new() |
Returns a new External sensor object.
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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.
Device::USB::PCSensor::HidTEMPer::Sensor
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.
Please report any bugs or missing features using the CPAN RT tool.
None
Magnus Sulland < msulland AT cpan DOT org >
This code includes findings done by Robin B. Jensen, http://www.drunkardswalk.dk, when converting the received hex values into volt.
Copyright (c) 2010−2011 Magnus Sulland
This program is free software; you can redistribute it and/or modify it under the same terms as Perl itself.