Advanced Thermopile IR Dual Line Sensor for Smart Home

• 作者: Christophe Escriba David Bourrier Eric Campo Georges Soto-Romero Jean-Yves Fourniols Julien Roux Pascal Acco
• 来源期刊: 传感技术(英文)
• 学科: 医学
• 关键词: THERMOPILE ARRAY THERMOELECTRIC Model THREE-DIMENSIONAL MICRO-MACHINING Self-Regulated Special-Purpose Measurement BENCH
• 年，卷（期）: 2018,（4）
• 页码范围: 69-87
• 页数: 19页
• 分类号: R73

摘要

This article presents all steps between the advanced design and the production of CMOS compatible thermoelectric effect infrared sensors dedicated to smart home applications. It will start by making a comparison between thermopile, bolometer and pyroelectric technologies. Although sensitivity performances available with bolometers appear to be better at first sight, it is found that thermopiles have non-negligible advantages that make them more suitable for this application field. Then the different steps necessary for the design will be described, starting from the thermoelectric model of the sensor (temperature gradient, electrical sensitivity, etc.) and considering all steps up to technological manufacturing in a clean room. The results obtained on the structures produced on a specific computer-controlled measurement bench (temperature regulation with an onboard preamplification card) will be presented. Finally, the results prove that the square structures have better performances (S = 82 V/W and NETD = 208 mK).