Infrared Sensor-Based Temperature Control for Domestic Induction Cooktops
| Autor: | Javier Lasobras, Rafael Alonso, Claudio Carretero, Enrique Carretero, Eduardo Imaz |
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| Jazyk: | angličtina |
| Rok vydání: | 2014 |
| Předmět: | |
| Zdroj: | Sensors, Vol 14, Iss 3, Pp 5278-5295 (2014) |
| Druh dokumentu: | article |
| ISSN: | 1424-8220 14030527 |
| DOI: | 10.3390/s140305278 |
| Popis: | In this paper, a precise real-time temperature control system based on infrared (IR) thermometry for domestic induction cooking is presented. The temperature in the vessel constitutes the control variable of the closed-loop power control system implemented in a commercial induction cooker. A proportional-integral controller is applied to establish the output power level in order to reach the target temperature. An optical system and a signal conditioning circuit have been implemented. For the signal processing a microprocessor with 12-bit ADC and a sampling rate of 1 Ksps has been used. The analysis of the contributions to the infrared radiation permits the definition of a procedure to estimate the temperature of the vessel with a maximum temperature error of 5 °C in the range between 60 and 250 °C for a known cookware emissivity. A simple and necessary calibration procedure with a black-body sample is presented. |
| Databáze: | Directory of Open Access Journals |
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