相关实验视频
Updated: Jul 27, 2025

Fabrication and Testing of Photonic Thermometers
Published on: October 24, 2018
一个CMOS温度传感器,智能校准不准确度为±0.11 (3σ)
Rongshan Wei1, Huishan Lin1, Qunchao Chen1
1College of Physics and Information Engineering, Fuzhou University, Fuzhou 350108, China.
这项研究介绍了一种基于双极连接晶体管 (BJT) 的新型智能CMOS温度传感器. 神经网络校准显著提高了 ±0.11 °C的精度,提高了精确温度监测的性能.
科学领域:
- 集成电路 集成电路
- 传感器技术 传感器技术
- 机器学习应用 机器学习应用
背景情况:
- 精确的温度传感在各种应用中至关重要.
- 现有的CMOS温度传感器面临的挑战是过程变化和设备非理想性.
- 需要先进的校准技术来提高传感器性能.
研究的目的:
- 开发基于BJT的高精度智能CMOS温度传感器.
- 用先进的电路技术来减轻非理想的情况.
- 通过神经网络改进传感器校准.
主要方法:
- 设计了一个基于BJT的模拟前端,带有偏差电路和双极核心.
- 实现了一种增量级的delta-sigma模拟到数字转换器 (ADC).
- 采用切割,相关的双重采样和动态元素匹配以获得准确性.
- 使用多层卷积感知神经网络进行校准.
主要成果:
- 通过神经网络校准,达到 ±0.11 °C (3σ) 的温度不准确.
- 与未校准传感器 (±0.23 °C) 相比,证明了更高的精度.
- 在0.18微米CMOS工艺中实现,面积为0.42毫米2.
- 达到0.01°C的分辨率和24ms的转换时间.
结论:
- 提出的基于BJT的CMOS温度传感器与神经网络校准提供了高精度和分辨率.
- 先进的电路技术有效地减少了测量误差.
- 该传感器适用于需要精确温度监测的应用.
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