公开(公告)号：US20160187198A1

公开(公告)日：2016-06-30

申请号：US14909948

申请日：2014-06-06

Applicant: HARBIN INSTITUTE OF TECHNOLOGY

Inventor： Yongkang DONG ,  Taofei JIANG ,  Dengwang ZHOU ,  Zhiwei LV

IPC: G01J3/18 ,  G01J3/02

CPC classification number: G01J3/18 ,  G01J3/0218 ,  G01J3/0224 ,  G01J3/4412 ,  G01J2003/1291 ,  G01N2021/638

Abstract: A spectroscopic analysis device based on Brillouin dynamic grating and its analysis method, which provides high resolution and large measuring range at the same time. The device includes a laser device (1), a fiber optic coupler device (2), a first fiber amplifier device (3), a first isolator (4), a first polarization controller (5), a second polarization controller (6), a single-sideband modulation modulator (7), a second fiber amplifier device (8), a second isolator (9), a third polarization controller (10), a single-mode fiber (11), a polarization beam splitter (12), a circulator (13), a photodetector (14), a data acquisition card (15), a fourth polarization controller (16) and a microwave source (17). The method utilizes the Brillouin scattering of two beams of pump light in optical fiber forming Brillouin dynamic gratings as the spectral element and achieve a sub-MHz resolution.

Abstract translation: 基于布里渊动态光栅的光谱分析装置及其分析方法，同时提供高分辨率和大测量范围。 该装置包括激光装置（1），光纤耦合装置（2），第一光纤放大装置（3），第一隔离器（4），第一偏振控制器（5），第二偏振控制器（6） ，单边带调制调制器（7），第二光纤放大器装置（8），第二隔离器（9），第三偏振控制器（10），单模光纤（11），偏振分束器 ），环行器（13），光电检测器（14），数据采集卡（15），第四偏振控制器（16）和微波源（17）。 该方法利用布里渊散射的两束泵浦光束形成布里渊动态光栅的光纤作为光谱元件，实现了一个低分辨率的分辨率。

公开(公告)号：US09145945B2

公开(公告)日：2015-09-29

申请号：US14376412

申请日：2013-02-26

Applicant: HARBIN INSTITUTE OF TECHNOLOGY

Inventor： Jiubin Tan ,  Lei Wang ,  Rongwei Wen ,  Bo Zhao ,  Yuanyuan Yang

IPC: F16M13/00 ,  F16F15/023 ,  F16F15/03

CPC classification number: F16F15/023 ,  F16F15/022 ,  F16F15/0232 ,  F16F15/03

Abstract: This invention relates to an active vibration isolation installation based on electromagnetic and aerostatic floatation which is essential for the super-precision measurement and manufacture. It mainly consists of an isolation platform, an intermediate sleeve and a base. The isolation platform supports any object(s) placed on the platform and is supported by the intermediate sleeve. And the intermediate sleeve is supported on the base which is fixed on the ground. This invention uses the combination electromagnetic and aerostatic floatation to achieve large bearing capacity while excellent vibration isolation performance is maintained. This invention realizes automatic control of stiffness, using closed-loop speed control methods. It is therefore conclude that this invention can impose an excellent inhibitory action on the vibration originating from surroundings and the platform itself.

Abstract translation: 本发明涉及一种基于电磁和空气静力浮选的主动隔振装置，这对于超精密测量和制造至关重要。 它主要由隔离平台，中间套筒和底座组成。 隔离平台支撑放置在平台上并由中间套筒支撑的任何物体。 并且中间套筒支撑在固定在地面上的基座上。 本发明使用电磁和空气静电浮选的组合来实现大的承载能力，同时保持优异的隔振性能。 本发明使用闭环速度控制方法实现刚度的自动控制。 因此，可以得出结论，本发明可以对来自周围环境的振动和平台本身施加优异的抑制作用。

公开(公告)号：US20250131178A1

公开(公告)日：2025-04-24

申请号：US18885497

申请日：2024-09-13

Applicant: Harbin Institute of Technology

Inventor： Huijun GAO ,  Zhengkai LI ,  Junhu CAO ,  Xinghu YU ,  Hao SUN ,  Jianbin QIU ,  Weichao SUN

IPC: G06F30/398 ,  G06F115/12 ,  G06N5/01 ,  H01L21/67

Abstract: A method for optimizing the placement process of a surface mounter using a heuristic adaptive tabu search is presented, relevant to surface-mount technology. The method includes encoding and decoding heuristic adaptive information link, where encoded information cover component allocation sequence, head sequence, heuristic algorithm selection, and pick-and-place path optimization sequence. The decoded results configure the component allocation algorithm and pick-and-place path optimization algorithm, and the optimized placement process is derived using these configured algorithms. The component allocation algorithm includes both the available feeder-oriented heuristic algorithm and the assigned feeder group-oriented heuristic algorithm, suitable for different feeder scenarios. Optimizing the selection of these algorithms achieves adaptive optimization for various production scenarios. The tabu search algorithm conducts neighborhood search operations on the adaptive information link, addressing component allocation and pick-and-place path optimization simultaneously. This approach synergistically optimizes the number of equivalent pick-up operations and pick-and-place path length, significantly enhancing production efficiency.

公开(公告)号：US12281946B1

公开(公告)日：2025-04-22

申请号：US18942832

申请日：2024-11-11

Applicant: Harbin Institute of Technology

Inventor： Hongxing Yang ,  Shiyuan Lin ,  Ziqi Yin ,  Yan Wang ,  Pengcheng Hu ,  Ruitao Yang

IPC: G01K3/08 ,  G01K7/16

Abstract: A differential proportional temperature measurement circuit and method based on bidirectional constant voltage drive is proposed. The circuit and method applied to the precision temperature measurement of spacecraft, the main components include a bidirectional constant voltage source proportional bridge circuit, a differential and single-ended amplifier circuit, an analog-to-digital conversion circuit, a digital filter circuit, a data processing circuit and an isolated filter power supply circuit. The method adopts the bidirectional constant voltage drive technology, and enlarges and measures the difference between the voltage values of the reference resistor and the resistance to be measured by improving the sensing bridge of the ordinary commutation proportional method, and suppresses the long-term drift of the excitation unit and the voltage measurement unit. The method can meet the requirements of temperature measurement resolution of μK magnitude and the power spectral density of μK/Hz1/2 (0.1 mHz-1 Hz) magnitude in aerospace temperature measurement systems.

公开(公告)号：US12259344B1

公开(公告)日：2025-03-25

申请号：US18809820

申请日：2024-08-20

Applicant: Harbin Institute of Technology

Inventor： Chenguang Liu ,  Jian Liu ,  Zhao Chen

IPC: G01N23/2255 ,  G01T1/20 ,  G01T1/29

Abstract: Provided is a living cell microbeam directional and quantitative irradiation imaging apparatus. The problem that qualitative analysis of the mechanism of action of biological cells irradiated cannot accurately study the mechanism of action of different irradiation doses on biological cells as the cell irradiation technology can be only used to perform qualitative irradiation on living biological cells is solved. The apparatus includes a vertical microbeam terminal, a living cell directional irradiation module, a wide-field microscopic module, a mode switching module, and a single-proton counting and radiation synchronous control module. The vertical microbeam terminal, the living cell directional irradiation module, the mode switching module and the wide-field microscopic module are sequentially matched, the mode switching module is connected to the single-proton counting and radiation synchronous control module, and the vertical microbeam terminal is matched with the single-proton counting and radiation synchronous control module.

公开(公告)号：US12247824B1

公开(公告)日：2025-03-11

申请号：US18595312

申请日：2024-03-04

Applicant: HARBIN INSTITUTE OF TECHNOLOGY

Inventor： Haijin Fu ,  Xiaobo Su ,  Liang Yu ,  Pengcheng Hu ,  Zhaochen Pan ,  Zhiwei Wang

IPC: G01B11/14 ,  G01B9/02002

Abstract: A heterodyne interferometer and a measurement method based on multi-target opposite displacement measurement are provided, technical points including: An output path of the laser source is sequentially arranged with a first beam splitter and a second beam splitter arranged in parallel on left and right sides, and both of which are polarization beam splitters; a first reflector is arranged above the first beam splitter, a third reflector is arranged on a right side of the second beam splitter, a second plane reflector is arranged in front of the second beam splitter, and a first plane reflector is arranged behind the second beam splitter; the first plane reflector and the second plane reflector jointly constitute a second reflector group; a left side of the first beam splitter is provided with a first photodetector and a second photodetector. The present invention realizes the measurement of relative displacement between opposing objects.

公开(公告)号：US12234545B2

公开(公告)日：2025-02-25

申请号：US17935035

申请日：2022-09-23

Applicant: Harbin Institute of Technology

Inventor： Xinxin Ma

IPC: C23C14/48 ,  C23C14/02

Abstract: A plasma source ion implanter with a preparation chamber for linear or cross transferring workpiece is provided to solve the problem of low production efficiency of an existing single vacuum chamber plasma source ion implanter. The ion implanter includes a preparation chamber, an implantation chamber and a workpiece transferring chamber. The implantation chamber is provided to maintain a high vacuum condition all the time, and the time for pre-vacuuming the base vacuum is ignored. The ion implanter with dual chamber configuration is able to greatly shorten the production cycle. The structural configurations of the preparation chamber and the implantation chamber are basically the same, and are adapted to be used independently when ion implantation is required for a long time.

公开(公告)号：US20250044128A1

公开(公告)日：2025-02-06

申请号：US18744803

申请日：2024-06-17

Applicant: Harbin Institute of Technology

Inventor： Yisi Dong ,  Wenrui Luo ,  Wenwen Li ,  Chen Zhang ,  Jinran Zhang ,  Pengcheng Hu

IPC: G01D5/353

Abstract: A micro-probe laser frequency modulation interferometric ranging method and system, under the premise of not introducing an absolute laser rangefinder to introduce new uncertainties, continuously and slowly changes the modulated laser wavelength, resulting in a continuous periodic phase change in the interference signal obtained by the detector. The laser modulation absorption spectrum shifts from the initial locked absorption peak to another locked peak, and the wavelength changes of the two locked absorption peaks before and after are obtained by checking the table. Meanwhile, calculating the phase difference demodulated by the phase generated carrier (PGC) before and after, and the initial length of optical dead-path is calculated using wavelength scanning technology. Afterwards, utilizing the advantages of high relative distance measurement accuracy of micro-probe fiber optic laser interferometer, real-time measurement of the measured distance is achieved.

公开(公告)号：US12203867B1

公开(公告)日：2025-01-21

申请号：US18802309

申请日：2024-08-13

Applicant: Harbin Institute of Technology

Inventor： Jian Liu ,  Chenguang Liu ,  Zijie Hua ,  Kang Gu

IPC: G01N21/88 ,  G01R31/311

Abstract: Provided are a dark-field confocal microscopy measurement apparatus and method. The apparatus includes: a fractional vortex beam module configured to generate first fractional vortex beam and second fractional vortex beam; an optical scanning module configured to scan a sample by using the first fractional vortex beam and the second fractional vortex beam to obtain first signal return light and second signal return light respectively; a dark-field detection module configured to perform dark-field detection on the first signal return light and the second signal return light to obtain a first fractional-order dark-field image and a second fractional-order dark-field image respectively; a differential dark-field scattered image determining module configured to differentiate the first fractional-order dark-field image from the second fractional-order dark-field image to obtain a differential dark-field scattered image; and a defect determining module configured to process the differential dark-field scattered image to obtain a sample defect.

公开(公告)号：US12203818B2

公开(公告)日：2025-01-21

申请号：US17704090

申请日：2022-03-25

Applicant: Harbin Institute of Technology

Inventor： Weijia Shi ,  Bo Zhao ,  Jiubin Tan

IPC: G01L5/173 ,  G01L1/16 ,  G01L5/167 ,  G01N3/06 ,  G01N3/08 ,  G01N29/07 ,  G01N29/44 ,  G01L1/25 ,  G01M5/00 ,  G01N29/04 ,  G01N29/24

Abstract: The disclosure provides a method, system, device and medium for online monitoring of a plane stress field without baseline data based on a piezoelectric transducer array. Since Lamb waves have complex multi-mode characteristics, a suitable excitation frequency needs to be selected according to geometric dimensions of the structure to be measured, and then, only low-order mode Lamb waves are excited inside the measured structure to avoid serious waveform aliasing. For isotropic measured objects, anisotropic characteristics will be generated under the action of pre-stresses, that is, the propagation velocities of ultrasonic waves in all directions are different, but there is a linear relationship between velocity changes in different propagation directions and stresses. Therefore, there is still a linear relationship between the difference of velocity changes in different propagation directions and the stress. According to this characteristic, a characterization method of an absolute stress field without baseline data can be implemented. The method of the disclosure can make full use of the low attenuation characteristics of the Lamb waves to realize online monitoring of the plane stress field with a large coverage area.