Novel Flexible Temperature Sensor Based on Polyvinyl Alcohol Acrylamide Hydrogels with Moisture Content Compensation

IF 17.7 1区化学 Q1 CHEMISTRY, MULTIDISCIPLINARY Accounts of Chemical Research Pub Date : 2024-04-09 DOI:10.18494/sam4770

Yuan Bai, Liangkuan Zhu, Haoyan Xu

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Abstract

Flexible temperature sensors are of considerable importance in many industrial and domestic fields such as medical care, agriculture, and food. We report a novel flexible temperature sensor based on polyvinyl alcohol acrylamide hydrogels with moisture content compensation. Firstly, the flexible temperature sensor was prepared by using graphene as a thermal conductive filler and polyvinyl alcohol and acrylamide as a matrix. Secondly, because the measurement accuracy of the flexible temperature sensor is considerably affected by the moisture content, a design scheme for the flexible temperature sensor with a moisture content compensation model was proposed. Finally, on the basis of the measured data of the flexible temperature sensor under multiple moisture contents, an improved sparrow search algorithm was used to optimize the backpropagation neural network model to compensate for the error caused by changes in moisture content, so as to improve the measurement accuracy of the sensor. The compensation results show that the proposed scheme can significantly reduce the measurement error of the flexible temperature sensor, enabling accurate, reliable, and sustainable monitoring.

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基于具有湿度补偿功能的聚乙烯醇丙烯酰胺水凝胶的新型柔性温度传感器

柔性温度传感器在医疗、农业和食品等许多工业和家用领域都具有相当重要的意义。我们报告了一种基于聚乙烯醇丙烯酰胺水凝胶的新型柔性温度传感器，该传感器具有湿度补偿功能。首先，以石墨烯为导热填料，聚乙烯醇和丙烯酰胺为基体制备了柔性温度传感器。其次，由于柔性温度传感器的测量精度受含水量的影响较大，因此提出了具有含水量补偿模型的柔性温度传感器设计方案。最后，根据柔性温度传感器在多种含水率下的测量数据，采用改进的麻雀搜索算法优化反向传播神经网络模型，以补偿含水率变化带来的误差，从而提高传感器的测量精度。补偿结果表明，所提出的方案可以显著降低柔性温度传感器的测量误差，从而实现准确、可靠和可持续的监测。

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来源期刊

Accounts of Chemical Research 化学-化学综合

CiteScore

31.40

自引率

1.10%

发文量

312

审稿时长

2 months

期刊介绍： Accounts of Chemical Research presents short, concise and critical articles offering easy-to-read overviews of basic research and applications in all areas of chemistry and biochemistry. These short reviews focus on research from the author’s own laboratory and are designed to teach the reader about a research project. In addition, Accounts of Chemical Research publishes commentaries that give an informed opinion on a current research problem. Special Issues online are devoted to a single topic of unusual activity and significance. Accounts of Chemical Research replaces the traditional article abstract with an article "Conspectus." These entries synopsize the research affording the reader a closer look at the content and significance of an article. Through this provision of a more detailed description of the article contents, the Conspectus enhances the article's discoverability by search engines and the exposure for the research.

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