Indian Journal of Science and Technology

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Methodology of Calibration of FSR Sensor for Seat Occupancy Detection in Vehicles


Affiliations
1 Mechanical Engineering Department, DIMER Research Group, Universidad del Atlántico, Barranquilla, Colombia
2 Mechanical Engineering Department, KAI Research Group, Universidad del Atlántico, Barranquilla, Colombia
3 Chemical Engineering Department, Sustainable Chemical and Biochemical Processes Research Group, Universidad del Atlántico, Barranquilla, Colombia
 

Background/Objectives: The implementation of a methodology for the calibration of a force sensor, applied to a commercial-type FSR for a seat occupancy detection application in a vehicle. This methodology is basedon the use of an Arduino® board, to establish a direct conversion between the sensor output, and the measured variable, which in this case correspond to the force applied. Methods: With the study of the behavior of the sensor response when coupled with a conditioning circuit, and the following calibration of this, to program a direct conversion between the circuit output voltage and the force detected by the sensor. Findings: It was found that using the programming of the Arduino board, the force value given by the Arduino GUI, have a maximum deviation from the real ones of approximately 1%, which can be attributed to conversion issues, but for the application required, the system studied has a great potential to use. Application: To calibrate a FSR force sensor, using a circuit conformed by a conditioning signal system, the sensor and the transducer element between the sensor and the graphical interface on a PC.
User

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  • Methodology of Calibration of FSR Sensor for Seat Occupancy Detection in Vehicles

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Authors

Jorge Duarte Forero
Mechanical Engineering Department, DIMER Research Group, Universidad del Atlántico, Barranquilla, Colombia
Guillermo E. Valencia
Mechanical Engineering Department, KAI Research Group, Universidad del Atlántico, Barranquilla, Colombia
Luis G. Obregon
Chemical Engineering Department, Sustainable Chemical and Biochemical Processes Research Group, Universidad del Atlántico, Barranquilla, Colombia

Abstract


Background/Objectives: The implementation of a methodology for the calibration of a force sensor, applied to a commercial-type FSR for a seat occupancy detection application in a vehicle. This methodology is basedon the use of an Arduino® board, to establish a direct conversion between the sensor output, and the measured variable, which in this case correspond to the force applied. Methods: With the study of the behavior of the sensor response when coupled with a conditioning circuit, and the following calibration of this, to program a direct conversion between the circuit output voltage and the force detected by the sensor. Findings: It was found that using the programming of the Arduino board, the force value given by the Arduino GUI, have a maximum deviation from the real ones of approximately 1%, which can be attributed to conversion issues, but for the application required, the system studied has a great potential to use. Application: To calibrate a FSR force sensor, using a circuit conformed by a conditioning signal system, the sensor and the transducer element between the sensor and the graphical interface on a PC.

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DOI: https://doi.org/10.17485/ijst%2F2018%2Fv11i23%2F126554