Sensor evaluation for leaf temperature within a minimally invasive leaf cuvette

IF 4.9 3区工程技术 Q2 ENGINEERING, ELECTRICAL & ELECTRONIC

Sensors and Actuators A-physical Pub Date : 2025-10-21 DOI:10.1016/j.sna.2025.117045

Yasmina Frey , Lukas Simon , Stefanie Dumberger , Simon Haberstroh , Christiane Werner , Ulrike Wallrabe

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引用次数: 0

Abstract

Leaf surface temperature is a key factor impacting plant physiological activity and reflects processes such as transpirational cooling and interactions between air temperature and radiation. In forests, precise monitoring of leaf temperature aids in assessing tree resilience to climate change and detecting water stress. Climate change has led to hot droughts in the last decade, which can drive species to their thermal limits, inducing leaf scorching. Nevertheless, long-term, minimally invasive monitoring remains a challenge.

We evaluate commercial sensors regarding their suitability for measuring leaf temperature. This includes contact-based sensors, such as thermocouples and semiconductor sensors, as well as non-contact infrared sensors. A particular focus is the challenge of establishing a reliable contact between the sensor and the leaf surface, which is crucial for accurate and consistent readings. Their performance regarding response time, measurement accuracy, and reliability under different environmental conditions is assessed.

These leaf temperature sensor types are compared for integration into measurement systems that require precise leaf temperature data, such as the ECOvette, a minimally invasive leaf cuvette. The ECOvette was developed to measure the gas exchange of a leaf under outdoor conditions; it also tracks environmental parameters like leaf temperature throughout the lifespan of a leaf. Our findings show that particularly semiconductor-based devices provide fast and stable temperature readings. These results contribute to improving long-term leaf monitoring in both natural and managed ecosystems, offering valuable insights for climate research.

Abstract Image

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在微创叶片试管内叶片温度的传感器评估

叶片表面温度是影响植物生理活动的关键因子，反映了植物的蒸腾降温和气温与辐射的相互作用等过程。在森林中，精确监测叶温有助于评估树木对气候变化的适应能力和检测水分压力。在过去的十年里，气候变化导致了炎热的干旱，这可能会使物种达到它们的热极限，导致叶子烧焦。然而，长期的微创监测仍然是一个挑战。我们评估商用传感器对测量叶片温度的适用性。这包括接触式传感器，如热电偶和半导体传感器，以及非接触式红外传感器。特别关注的是在传感器和叶片表面之间建立可靠接触的挑战，这对于准确和一致的读数至关重要。评估了它们在不同环境条件下的响应时间、测量精度和可靠性。将这些叶温传感器类型进行比较，以便集成到需要精确叶温数据的测量系统中，例如ECOvette，一种微创叶片比色器。ECOvette的开发是为了测量室外条件下叶子的气体交换；它还跟踪环境参数，如叶子在整个生命周期中的温度。我们的研究结果表明，特别是基于半导体的设备提供快速和稳定的温度读数。这些结果有助于改善自然和管理生态系统的长期叶片监测，为气候研究提供有价值的见解。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Sensors and Actuators A-physical 工程技术-工程：电子与电气

CiteScore

8.10

自引率

6.50%

发文量

630

审稿时长

49 days

期刊介绍： Sensors and Actuators A: Physical brings together multidisciplinary interests in one journal entirely devoted to disseminating information on all aspects of research and development of solid-state devices for transducing physical signals. Sensors and Actuators A: Physical regularly publishes original papers, letters to the Editors and from time to time invited review articles within the following device areas: • Fundamentals and Physics, such as: classification of effects, physical effects, measurement theory, modelling of sensors, measurement standards, measurement errors, units and constants, time and frequency measurement. Modeling papers should bring new modeling techniques to the field and be supported by experimental results. • Materials and their Processing, such as: piezoelectric materials, polymers, metal oxides, III-V and II-VI semiconductors, thick and thin films, optical glass fibres, amorphous, polycrystalline and monocrystalline silicon. • Optoelectronic sensors, such as: photovoltaic diodes, photoconductors, photodiodes, phototransistors, positron-sensitive photodetectors, optoisolators, photodiode arrays, charge-coupled devices, light-emitting diodes, injection lasers and liquid-crystal displays. • Mechanical sensors, such as: metallic, thin-film and semiconductor strain gauges, diffused silicon pressure sensors, silicon accelerometers, solid-state displacement transducers, piezo junction devices, piezoelectric field-effect transducers (PiFETs), tunnel-diode strain sensors, surface acoustic wave devices, silicon micromechanical switches, solid-state flow meters and electronic flow controllers. Etc...