Simulator of the resistive temperature sensor
Languev, Oleg (2019)
2019
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Julkaisun pysyvä osoite on
https://urn.fi/URN:NBN:fi:amk-2019120424576
https://urn.fi/URN:NBN:fi:amk-2019120424576
Tiivistelmä
The given work represents the development of the simulator of resistance temperature sensors of two types: PT100 and PT1000. The purpose is the simulation of changing temperature for EKE Electronics. Ltd. temperature monitoring modules and reducing the number of manual manipulations.
The PT simulator uses digital potentiometers in order to produce the resistance in ten degrees wider range than modules may measure. Potentiometers receive the commands by I2C bus from Python scripts.
The developed board works with Raspberry Pi as a hat. It is controllable via SSH or can be used with the monitor and keyboard. Temperature can be programmable set with error in one or two degrees, the whole tested range is covered with the produced temperature. Set commands of PT simulator can be sent from Raspberry Pi or from connected PC.
The achieved accuracy is enough to test the temperature monitoring software. Improving accuracy and stability of the output is the goal of the future board development.
The PT simulator uses digital potentiometers in order to produce the resistance in ten degrees wider range than modules may measure. Potentiometers receive the commands by I2C bus from Python scripts.
The developed board works with Raspberry Pi as a hat. It is controllable via SSH or can be used with the monitor and keyboard. Temperature can be programmable set with error in one or two degrees, the whole tested range is covered with the produced temperature. Set commands of PT simulator can be sent from Raspberry Pi or from connected PC.
The achieved accuracy is enough to test the temperature monitoring software. Improving accuracy and stability of the output is the goal of the future board development.