公开(公告)号：US12286354B1

公开(公告)日：2025-04-29

申请号：US18982794

申请日：2024-12-16

Applicant: Guangdong University of Technology

Inventor： Yun Chen ,  Bin Xie ,  Yuanhui Guo ,  Hao Zhang ,  Maoxiang Hou ,  Li Ma ,  Xin Chen

IPC: C01B32/194 ,  B23K26/362 ,  C01B32/184 ,  G01N27/12

Abstract: A method for manufacturing a humidity alarm device based on laser-induced graphene is performed as follows. Carbon-based films are coated with a hydroxide ion-containing solution and processed by a laser device to generate hydrophilic graphene layers. The hydrophilic graphene layers are peeled off from the carbon-based films, wetted, and respectively wrapped around shaping rods varying in diameter. The wrapped rods are heated and shaped by a drying oven to obtain curled graphene switches. Each curled graphene switch is connected in series with an alarm lamp to form an alarm component. The alarm components are connected in parallel, and then connected to a positive terminal and a negative terminal of a power supply to form the humidity alarm device.

公开(公告)号：US11992959B1

公开(公告)日：2024-05-28

申请号：US18402139

申请日：2024-01-02

Applicant: GUANGDONG UNIVERSITY OF TECHNOLOGY

Inventor： Jian Gao ,  Guoqing Wu ,  Zhuojun Zheng ,  Lanyu Zhang ,  Yuheng Luo ,  Disai Chen ,  Xin Chen

IPC: B25J9/16 ,  G06T7/70

CPC classification number: B25J9/1692 ,  G06T7/70 ,  G06T2207/30244

Abstract: A kinematics-free hand-eye calibration method comprises: controlling translation axes of a five-axis motion platform to perform a single-axis point location motion, using a camera to obtain a first spatial coordinate of a calibration plate, fitting all first spatial coordinates into a spatial straight line to obtain a unit direction vectors of the spatial straight line, carrying out Schmidt orthogonalization on the unit direction vectors of the spatial straight lines of an X direction, a Y direction and a Z direction to obtain a pose relationship matrix combined by the orthogonalized direction vectors; obtaining a second spatial coordinate of the calibration plate in a mode of rotating an X-axis and a C-axis, fitting all second spatial coordinates into a spatial spherical surface, calculating a spherical center coordinate to obtain a position relationship matrix, and obtaining a hand-eye relationship matrix combined by the pose relationship matrix and the position relationship matrix.

公开(公告)号：US11699244B2

公开(公告)日：2023-07-11

申请号：US17988096

申请日：2022-11-16

Applicant: Guangdong University of Technology

Inventor： Jian Gao ,  Yuanyang Wei ,  Lanyu Zhang ,  Yongbin Zhong ,  Haixiang Deng ,  Yun Chen ,  Xin Chen

IPC: G06K9/00 ,  G06T7/70 ,  G06T9/00

CPC classification number: G06T7/70 ,  G06T9/001

Abstract: A real-time pose measurement method of a planar coding target for a vision system. The planar coding target includes a plurality of coding elements, a coding block, a coding template, a minimum identification unit pattern and a coding pattern. Each coding element has a unique coding value, and serial numbers of the coding elements are different from each other. The coding block includes four coding elements that are distributed in the same rectangle ABCD and do not overlap with each other. A center of the coding block is an intersection point O of two diagonals of the rectangle ABCD. A coding value of the coding block is associated with coding values of the four coding elements contained therein.

公开(公告)号：US10850304B2

公开(公告)日：2020-12-01

申请号：US16717331

申请日：2019-12-17

Applicant: Guangdong University of Technology

Inventor： Yun Chen ,  Junyu Long ,  Shuang Zhou ,  Xin Chen ,  Jian Gao ,  Qiang Liu ,  Ching-Ping Wong ,  Shenghui Zhang

IPC: B05D3/06 ,  B05D1/00 ,  B05D3/04 ,  B23K26/04 ,  B23K26/359 ,  B23K26/08 ,  B23K26/12 ,  B23K26/352 ,  B23K26/06

Abstract: A device for processing microstructure arrays of polystyrene-graphene nanocomposites, including a laser generator, a vacuum chamber, an object stage, an ultraviolet filter and a gas flow control unit. The object stage is detachably fixed to a bottom of the vacuum chamber with a passage that can be opened or closed. The ultraviolet filter is provided in the vacuum chamber. A laser light emitted by the laser generator arrives at the object stage through the ultraviolet filter. The object stage is configured to place a sample to be processed. The gas flow control unit is communicated with the vacuum chamber and is configured to control the flow of the gas entering the vacuum chamber. The vacuum chamber is fixed on a three-axis precision positioning platform via a vacuum chamber clamp. The device disclosed herein aims to solve the existing difficulty in processing microstructure arrays of polystyrene-graphene nanocomposites.

公开(公告)号：US09746123B2

公开(公告)日：2017-08-29

申请号：US15376654

申请日：2016-12-12

Applicant: GUANGDONG UNIVERSITY OF TECHNOLOGY

Inventor： Zhijun Yang ,  Youdun Bai ,  Xin Chen ,  Chaoran Chen ,  Chengxiang Li

IPC: F16M13/00 ,  F16M7/00 ,  F16F15/02 ,  F16F15/073

CPC classification number: F16M7/00 ,  F16F3/10 ,  F16F15/02 ,  F16F15/022 ,  F16F15/073 ,  F16F15/08 ,  F16F15/085 ,  F16F2224/02 ,  F16F2228/04 ,  F16F2228/066 ,  F16F2228/08 ,  F16F2230/34

Abstract: A composite frequency-adjustable shock absorber is provided, comprising a motion main machine stand bar and a shock absorption device, which are arranged on a foundation carrier platform; the shock absorption device is divided into an upper shock absorption device and a lower shock absorption device, the shock absorption device is arranged on a base with an inner cavity, and the upper shock absorption device for suppressing the low-frequency vibration and the lower shock absorption device for absorbing additional high-frequency vibration are connected in series; the upper shock absorption device comprises an elastic component based on a flexible hinge group and a prestress adjusting device, the flexible hinge group is arranged in the inner cavity of the base, the prestress adjusting device for adjusting the inherent frequency of the flexible hinge group is connected with the flexible hinge group, and the motion main machine stand bar is fixed on a load bearing portion of the flexible hinge group. The inherent frequency of the whole flexible hinge group is changed, so the high frequency band and the low frequency band of vibration systems with different masses and different excitation frequencies are effectively isolated, the structure is simple, the adjustment is convenient, and the cost is not high.

公开(公告)号：US20170089505A1

公开(公告)日：2017-03-30

申请号：US15376654

申请日：2016-12-12

Applicant: GUANGDONG UNIVERSITY OF TECHNOLOGY

Inventor： Zhijun Yang ,  Youdun Bai ,  Xin Chen ,  Chaoran Chen ,  Chengxiang Li

IPC: F16M7/00 ,  F16F15/073 ,  F16F15/02

CPC classification number: F16M7/00 ,  F16F3/10 ,  F16F15/02 ,  F16F15/022 ,  F16F15/073 ,  F16F15/08 ,  F16F15/085 ,  F16F2224/02 ,  F16F2228/04 ,  F16F2228/066 ,  F16F2228/08 ,  F16F2230/34

Abstract: A composite frequency-adjustable shock absorber is provided, comprising a motion main machine stand bar and a shock absorption device, which are arranged on a foundation carrier platform; the shock absorption device is divided into an upper shock absorption device and a lower shock absorption device, the shock absorption device is arranged on a base with an inner cavity, and the upper shock absorption device for suppressing the low-frequency vibration and the lower shock absorption device for absorbing additional high-frequency vibration are connected in series; the upper shock absorption device comprises an elastic component based on a flexible hinge group and a prestress adjusting device, the flexible hinge group is arranged in the inner cavity of the base, the prestress adjusting device for adjusting the inherent frequency of the flexible hinge group is connected with the flexible hinge group, and the motion main machine stand bar is fixed on a load bearing portion of the flexible hinge group. The inherent frequency of the whole flexible hinge group is changed, so the high frequency band and the low frequency band of vibration systems with different masses and different excitation frequencies are effectively isolated, the structure is simple, the adjustment is convenient, and the cost is not high.

公开(公告)号：US20170001275A1

公开(公告)日：2017-01-05

申请号：US15114090

申请日：2014-09-24

Applicant: GUANGDONG UNIVERSITY OF TECHNOLOGY

Inventor： Zhijun Yang ,  Youdun Bai ,  Xin Chen ,  Jian Gao ,  Haidong Yang ,  Meng Wang ,  Hui Tang

IPC: B23Q1/34 ,  B23Q5/28 ,  B23Q1/62

CPC classification number: B23Q1/34 ,  B23Q1/62 ,  B23Q5/28 ,  B23Q2210/002 ,  B23Q2230/004

Abstract: The present disclosure involves occasions where precise two-dimensional motion takes place, and is applicable to XY motion stages for precise displacement compensation. The present disclosure particularly involves a stiffness-frequency adjustable XY micromotion stage based on stress stiffening, which includes X-direction and Y-direction motion sub-stages and corresponding drivers and a micromotion working table. The micromotion stage uses membrane sets that have tension levels thereof adjusted by bolts as a flexible hinge, so as to achieve independent adjustment of the vibration frequency of the XY micromotion stage. The present disclosure implements the foregoing configuration based on prestressed membrane, so the frequency is adjustable. The inherent frequency of the micromotion stage can be adjusted before or during operation according to various working conditions and driving frequency. The two feed motion direction are perpendicular so as to prevent the micromotion working table from coupling during two-dimensional motion.

Abstract translation: 本公开涉及发生精确二维运动的场合，并且适用于用于精确位移补偿的XY运动台。 本公开特别涉及基于应力硬化的刚度 - 频率可调XY微动平台，其包括X方向和Y方向运动子级以及相应的驱动器和微动作工作台。 微动阶段使用具有通过螺栓调节的张力水平的膜组作为柔性铰链，以便实现XY微动阶段的振动频率的独立调整。 本公开实现了基于预应力膜的上述构造，因此频率是可调节的。 可以根据各种工作条件和驱动频率在操作前或操作期间调整微动阶段的固有频率。 两个进给运动方向是垂直的，以防止微动工作台在二维运动期间耦合。

公开(公告)号：US20160025522A1

公开(公告)日：2016-01-28

申请号：US14439096

申请日：2015-01-28

Applicant: Guangdong University of Technology

Inventor： Han Wang ,  Zhixiong Wu ,  Xin Chen ,  Xindu Chen ,  Bin Chen ,  Xiaohai Wei ,  Chaolong Fan

IPC: G01D5/347 ,  G01D5/38

CPC classification number: G01D5/347 ,  G01D5/38

Abstract: The present invention is a method of assisted mounting and error compensation for absolute grating ruler. It comprises the following: (1) when mounting a CMOS sensor and a grating ruler body, the CMOS sensor reads an upper and a lower sample windows, and due to an angle existing between the grating ruler body and the CMOS sensor, a difference exists between the numbers of the upper and lower sample windows, and by continually adjusting the grating ruler body or the CMOS sensor, the code reading difference is made minimal so that the angle existing between the grating ruler body and the CMOS sensor is zeroed; (2) when mounting the grating ruler body and a mechanic housing, it is moved by a fixed displacement in a motion direction, and a grating encoding reading is recorded and an error compensating amount is obtained which serves as error compensation value in an actual motion to correct a cumulative error introduced by the angle between the grating ruler body and the motion direction. The invention may automatically calculate the deviation angles between the CMOS sensor and the grating ruler body and correct parallelism errors. Meanwhile, it also provides an error compensation in the case that the parallelism errors between the grating ruler body and the reference direction cannot be corrected.

Abstract translation: 本发明是一种绝对光栅尺的辅助安装和误差补偿方法。 它包括以下内容：（1）当安装CMOS传感器和光栅尺时，CMOS传感器读取上下样品窗口，并且由于光栅尺和CMOS传感器之间存在角度，存在差异 在上下采样窗口的数量之间，并且通过连续调整光栅尺或CMOS传感器，代码读取差异最小，使得光栅尺体和CMOS传感器之间存在的角度归零; （2）当安装格栅尺和机械外壳时，沿运动方向移动一个固定位移，记录光栅编码读数，并获得误差补偿量，作为实际运动中的误差补偿值 以校正由光栅尺体与运动方向之间的角度引入的累积误差。 本发明可以自动计算CMOS传感器和光栅尺体之间的偏差角度并纠正并行误差。 同时，在光栅尺和基准方向之间的平行度误差不能被校正的情况下，还提供误差补偿。