基于CTGS的壳体压电谐振器高温特性研究

IF 0.8 Q4 INSTRUMENTS & INSTRUMENTATION

Journal of Sensors and Sensor Systems Pub Date : 2021-11-19 DOI:10.5194/jsss-10-271-2021

M. Schulz, Rezvan Ghanavati, F. Kohler, J. Wilde, H. Fritze

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引用次数: 3

摘要

摘要提出了一种基于压电单晶的温度传感器，该温度传感器允许在极端温度和高度还原或氧化的环境等恶劣环境中稳定工作。厚度剪切模式谐振器的机械刚度的温度依赖性用于确定温度变化。该传感器基于钙铝石（Ca3TaGa3Si2O14–CTGS），钙铝石晶体家族的一员。CTGS表现出有序的晶体结构和低的声学损耗，即使在1000 ∘C.未使用和容纳的CTGS谐振器的谐振频率和品质因数被测量到高达约1030 ∘C.谐振频率的温度系数约为200 赫兹 K−1表示5 找到了MHz设备，可以确定小到0.04的温度变化 K.在30 d、 711的长期测试 ∘C

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High-temperature behavior of housed piezoelectric resonators based on CTGS

Abstract. A temperature sensor based on piezoelectric single crystals allowing stable operation in harsh environments such as extreme temperatures and highly reducing or oxidizing atmospheres is presented. The temperature dependence of the mechanical stiffness of thickness shear mode resonators is used to determine temperature changes. The sensor is based on catangasite (Ca3TaGa3Si2O14 – CTGS), a member of a langasite crystal family. CTGS exhibits an ordered crystal structure and low acoustic losses, even at 1000 ∘C. The resonance frequency and quality factor of unhoused and of housed CTGS resonators are measured up to about 1030 ∘C. A temperature coefficient of the resonance frequency of about 200 Hz K−1 for a 5 MHz device is found and enables determination of temperature changes as small as 0.04 K. Housed CTGS resonators do not show any significant change in the resonance behavior during a 30 d, long-term test at 711 ∘C.

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来源期刊

Journal of Sensors and Sensor Systems INSTRUMENTS & INSTRUMENTATION-

CiteScore

2.30

自引率

10.00%

发文量

审稿时长

23 weeks

期刊介绍： Journal of Sensors and Sensor Systems (JSSS) is an international open-access journal dedicated to science, application, and advancement of sensors and sensors as part of measurement systems. The emphasis is on sensor principles and phenomena, measuring systems, sensor technologies, and applications. The goal of JSSS is to provide a platform for scientists and professionals in academia – as well as for developers, engineers, and users – to discuss new developments and advancements in sensors and sensor systems.