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Viscosity Sensor of a Phase Detection Type

相位检测型粘度传感器

基本信息

批准号：
15560366
负责人：
KOBAYASHI Tsutomu
金额：
$ 0.77万
依托单位：
Nihon University
依托单位国家：
日本
项目类别：
Grant-in-Aid for Scientific Research (C)
财政年份：
2003
资助国家：
日本
起止时间：
2003 至 2004
项目状态：
已结题

来源：
https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-15560366/
关键词：
Viscosity sensor Viscometer of vibration type Triangular bimorph transducer Phase detection sensor Phase difference type viscometer High viscosity measurement 位相検出

项目摘要

A conventional viscometer requires a large amount of specimen liquid for viscosity measurement. Furthermore, measurement and handling of high viscosity are troublesome. To solve these problems, we used a piezoelectric bimorph transducer, processed like a triangle. It was utilized as two unimorphs : one was used for driving, and the other was used for detection. A new original viscometer was thereby developed that detects the viscosity load as an electric phase difference between two unimorphs. The rectangular bimorph was processed into a triangle to heighten the detection of the phase difference for viscosity. The phase difference appears only slightly in a general rectangular bimorph. The triangular configuration is an important and novel improvement. Moreover, the resonance frequency is generally used as the drive frequency of this bimorph. However, the frequency of the non-resonance range which the phase characteristic was steady was used in this research. This is also an original f … More eature of this experiment.Results obtained to date confirm measurement of low viscosity using frequencies of 200-500 Hz. Then, a non-resonant frequency band of 100 Hz or less, which is lower than the first resonance frequency of the bimorph, is used especially to attempt high-viscosity measurements. In this study, drooping characteristics occasionally appeared for the phase difference according to the length of the bimorph used. We spent much time to clarify that phenomenon. Finally, the problem was solved. Clarification of its cause improved the results and introduced the possibility of the device's practical use. Because the phase difference was used in the experiments, it was possible to measure high viscosities using a low frequency. Moreover, the use of such a low frequency is a novel feature among viscometers. This viscometer allows easy measurements in real time using a small amount of liquid. It can measure very high viscosities that are troublesome to measure using conventional devices. Consequently, it can be utilized conveniently for manufacturing management purposes including basic research of materials in general and food industries. Less

传统的粘度计需要大量的样品液体用于粘度测量。此外，高粘度的测量和处理是麻烦的。为了解决这些问题，我们使用了压电双晶片换能器，加工成三角形。它被用作两个单体：一个用于驱动，另一个用于检测。因此，开发了一种新的原始粘度计，其检测作为两个单压电晶片之间的电相位差的粘度负载。将矩形双压电晶片加工成三角形，提高了相位差对粘度的检测能力。在一般的矩形双压电晶片中，相位差只出现很小的变化。三角形配置是一个重要的和新颖的改进。此外，谐振频率通常用作该双压电晶片的驱动频率。然而，在本研究中，使用了相位特性稳定的非共振范围的频率。这也是一个原始的f ...更多信息到目前为止获得的结果证实了使用200-500 Hz频率的低粘度测量。然后，特别使用低于双压电晶片的第一谐振频率的100 Hz或更小的非谐振频带来尝试高粘度测量。在这项研究中，下垂的特性偶尔出现的相位差，根据长度的双压电晶片使用。我们花了很多时间来澄清这一现象。终于，问题解决了。阐明其原因改善了结果，并介绍了该设备的实际应用的可能性。由于在实验中使用了相位差，因此可以使用低频率测量高粘度。此外，使用这种低频率是粘度计中的一个新特征。该粘度计允许使用少量液体在真实的时间内进行简单的测量。它可以测量非常高的粘度，这是很麻烦的测量使用传统的设备。因此，它可以方便地用于生产管理目的，包括一般和食品工业的材料基础研究。少