Infrared Sensor-Based Temperature Control for Domestic Induction Cooktops

被引：11

作者：

Lasobras, Javier ^{[1
]}

Alonso, Rafael ^{[1
]}

Carretero, Claudio ^{[1
]}

Carretero, Enrique ^{[1
]}

Imaz, Eduardo ^{[2
]}

机构：

[1] Univ Zaragoza, Dept Appl Phys, E-50009 Zaragoza, Spain

[2] Bosch & Siemens Home Appliances Grp, Global Cooking Prod Div, Zaragoza 50016, Spain

来源：

SENSORS | 2014年 / 14卷 / 03期

关键词：

non-contact temperature measurement; infrared sensor; radiation detector; induction heating; temperature control; SIMULATED DEFECT; EMISSIVITY; PERFORMANCE; PYROMETER; SYSTEM; COILS;

D O I：

10.3390/s140305278

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

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 degrees C in the range between 60 and 250 degrees C for a known cookware emissivity. A simple and necessary calibration procedure with a black-body sample is presented.

引用

页码：5278 / 5295

页数：18

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