公开(公告)号：US12279531B2

公开(公告)日：2025-04-15

申请号：US18487880

申请日：2023-10-16

Applicant: Xi'an Jiaotong University

Inventor： Zhongkai Zhang ,  Jiaming Lei ,  Le Li ,  Shuimin Li ,  Bian Tian ,  Libo Zhao ,  Zhuangde Jiang

IPC: H10N10/17 ,  H10N10/01 ,  H10N10/82 ,  H10N19/00 ,  G01K7/02

Abstract: An alginate hydrogel-based thin-film heat flux sensor for billet crystallizer includes an alginate hydrogel substrate. The alginate hydrogel substrate is configured in a U-shaped planar structure. The U-shaped planar structure includes a first side and a second side, and the first side is longer than the second side. An inner surface of the alginate hydrogel substrate is provided with a first film thermocouple and a second film thermocouple. The first film thermocouple is in crosslinking connection with the second film thermocouple.

公开(公告)号：US20240393196A1

公开(公告)日：2024-11-28

申请号：US18782000

申请日：2024-07-23

Applicant: Xi'an Jiaotong University

Inventor： Yifan Zhao ,  Ge Wang ,  Fengwei Liu ,  Yaxin Zhang ,  Chenying Wang ,  Feng Han ,  Zhuangde Jiang

IPC: G01L1/22

Abstract: The present disclosure relates to the field of strain sensors, and specifically relates to a high-temperature thin-film strain sensor, including a substrate and a strain-sensitive grid. The strain-sensitive grid includes an indium tin oxide layer and a platinum layer, the indium tin oxide layer is deposited on the substrate, and the platinum layer is deposited on the indium tin oxide layer. The indium tin oxide layer contains 50% by mass of indium oxide and 50% by mass of tin oxide. The high-temperature thin-film strain sensor provided by the present disclosure can be used in an environment from room temperature to 500° C., and have extremely high sensitivity at a high temperature of 500° C. Unlike the conventional metal foil strain gauge with a thickness of several microns, the high-temperature thin-film strain grid has a thickness of 500 nm, which can better convey the strain of the measured object at high temperature.

公开(公告)号：US20190293421A1

公开(公告)日：2019-09-26

申请号：US16465576

申请日：2017-12-29

Applicant: XI'AN JIAOTONG UNIVERSITY

Inventor： Xueyong Wei ,  Yinsheng Weng ,  Shudong Wang ,  Dong Pu ,  Zhuangde Jiang

IPC: G01C9/06 ,  G01P15/18

Abstract: A frequency detection method based on synchronous oscillation of resonators, and a tilt sensor using the frequency detection method are disclosed. The sensor includes a detecting unit and a synchronization unit which are respectively disposed in a first oscillating circuit and a second oscillating circuit for forming two self-excited oscillators. The detecting unit and the synchronization unit are electrostatically coupled through a plate capacitor to allow a weak synchronous current to pass through, which affects and reduces phase noise of the self-excited oscillator formed by the detecting unit, thereby greatly improving the frequency stability thereof and simultaneously reading out a natural frequency thereof through a frequency counter. Three detecting units are respectively evenly distributed at a periphery of a hexagonal mass block through magnifying beams. The mass block is configured to sense a gravitational acceleration. The gravitational acceleration is converted into a compressive or tension stress to be applied to the magnifying beams, and then the stress is amplified by the magnifying beams to be applied to the detecting units, so as to change a self-oscillation frequency of the detecting units for forming three synchronous self-oscillation circuits. Through the oscillation frequency and the oscillation frequency variation of the three synchronous self-oscillation circuits, the acceleration magnitude and direction of the entire sensor are deduced.

公开(公告)号：US11686637B2

公开(公告)日：2023-06-27

申请号：US17583392

申请日：2022-01-25

Applicant: XI'AN JIAOTONG UNIVERSITY

Inventor： Xudong Fang ,  Ziyan Fang ,  Chen Wu ,  Hao Sun ,  Libo Zhao ,  Bian Tian ,  Zhuangde Jiang ,  Wubin Deng ,  Bonan Gao ,  Junxia Wu ,  Songli Wang ,  Nan Zhu

IPC: G01L9/00 ,  B81B7/02

CPC classification number: G01L9/005 ,  B81B7/02 ,  G01L9/0054 ,  B81B2201/0264 ,  B81B2201/0278

Abstract: A silicon carbide-based micro-electro-mechanical system (MEMS) combined temperature-pressure sensor chip and a preparation thereof. The chip includes a peripheric pressure-measuring unit and a center temperature-measuring unit. The pressure-measuring unit includes a silicon carbide substrate with a raised island and a pressure sensitive diaphragm formed by etching the back of the substrate. The raised island and the pressure-sensitive diaphragm constitute a membrane-island structure. Four piezoresistive strips are arranged symmetrically along a circumferential direction of a root of the pressure-sensitive diaphragm and between the raised island and the pressure-sensitive diaphragm. The temperature-measuring unit includes the raised island and a thin-film thermocouple arranged thereon.

公开(公告)号：US09228929B2

公开(公告)日：2016-01-05

申请号：US13658639

申请日：2012-10-23

Applicant: XI'AN JIAOTONG UNIVERSITY

Inventor： Zhuangde Jiang ,  Guiming Zhang ,  Libo Zhao ,  Enze Huang ,  Longqi Xu ,  Yulong Zhao ,  Xiaopo Wang ,  Bo Song ,  Zhigang Liu

IPC: G01N9/00 ,  G01N27/74 ,  G01N29/036 ,  G01N29/22 ,  G01N9/32

CPC classification number: G01N9/002 ,  G01N9/32 ,  G01N27/74 ,  G01N29/036 ,  G01N29/222 ,  G01N2009/006 ,  G01N2291/014 ,  G01N2291/02818

Abstract: The present invention provides a method of on-line rapid fluid density measurement using a piezoresistive micro-cantilever, the present invention can achieve on-line measurement without changing the existing device; more importantly, without acquiring the resonant frequency of the cantilever in fluid to be detected, thus remarkably reducing measurement time, and guaranteeing the real on-line rapid measurement. By using the method of the present invention, measurement of the density of fluid to be detected by a calibrated piezoresistive micro-cantilever may be achieved within seconds or even shorter.

Abstract translation: 本发明提供一种使用压阻微悬臂梁进行在线快速流体密度测量的方法，本发明可以在不改变现有装置的情况下实现在线测量; 更重要的是，没有获取要检测的流体中的悬臂的共振频率，从而显着减少测量时间，并保证实际的在线快速测量。 通过使用本发明的方法，可以在几秒甚至更短的时间内测量由校准的压阻微悬臂梁检测的流体的密度。

公开(公告)号：US11171276B2

公开(公告)日：2021-11-09

申请号：US17118504

申请日：2020-12-10

Applicant: Xi'an Jiaotong University

Inventor： Bian Tian ,  Zhongkai Zhang ,  Yan Liu ,  Zhaojun Liu ,  Jiangjiang Liu ,  Cunfeng Wang ,  Peng Shi ,  Qijing Lin ,  Zhuangde Jiang

IPC: G01K7/02 ,  H01L35/12 ,  H01L35/04 ,  H01L35/32

Abstract: A thin-film thermocouple probe includes a columnar substrate, a tungsten-26% rhenium film and an indium oxide (In2O3) film. A side surface of the columnar substrate is provided with a first straight groove and a second straight groove. The tungsten-26% rhenium film is arranged on a front end surface of the columnar substrate and in the first straight groove. The indium oxide film is arranged on the front end surface of the columnar substrate and in the second straight groove. The indium oxide film on the front end surface of the columnar substrate is connected to the tungsten-26% rhenium film on the front end surface of the columnar substrate. A first metal lead wire is connected to the tungsten-26% rhenium film, and a second metal lead wire is connected to the indium oxide film. A method of preparing the thin-film thermocouple probe is provided.

公开(公告)号：US20180294395A1

公开(公告)日：2018-10-11

申请号：US15762819

申请日：2016-10-18

Applicant: XI'AN JIAOTONG UNIVERSITY

Inventor： Peng Shi ,  Wei Ren ,  Dan Liu ,  Ming Liu ,  Bian Tian ,  Zhuangde Jiang

IPC: H01L35/14 ,  C04B35/50 ,  G01K7/02 ,  H01L35/32 ,  H01L35/34

Abstract: A doped lanthanum chromate thin-film thermocouple includes two thermodes (1, 2) arranged on a ceramic substrate (3), wherein: the two thermodes (1, 2) are overlapped with each other; both of the thermodes (1, 2) are made of doped lanthanum chromate thin film; at least one doping element selected from a group consisting of Mg, Ca, Sr, Ba, Co, Cu, Sm, Fe, Ni and V is doped in each lanthanum chromate thin film; and the lanthanum chromate thin films adopted by the two thermodes (1, 2) are doped with in different doping elements or with a same doping element of different contents. A method for preparing the doped lanthanum chromate thin-film thermocouple is also provided.