公开(公告)号：US08180101B2

公开(公告)日：2012-05-15

申请号：US12022681

申请日：2008-01-30

Applicant: Junhua Sun ,  Guangjun Zhang ,  Zhenzhong Wei

Inventor： Junhua Sun ,  Guangjun Zhang ,  Zhenzhong Wei

IPC: G06K9/00 ,  H04N17/00

CPC classification number: G01B11/2504

Abstract: This disclosure provides a calibration method for structure parameters of a structured-light vision sensor, which includes setting up the coordinate frames of a camera, image plane and target for calibration. The calculation of coordinates in the camera coordinate frame of stripes, projected by structured-light, on the planar target and a structured-light equation fitting according to the coordinates in the camera coordinate frame of the stripes on the planar target, by moving the planar target arbitrarily multiple times. The calibration method of the structured-light vision sensor provided by the disclosure is easy to operate and no auxiliary apparatus is needed, which can not only promote the efficiency of the calibration of structured-light, but also extend the application scope of calibration of structured-light.

Abstract translation: 本公开提供了一种用于结构光视觉传感器的结构参数的校准方法，其包括设置相机，图像平面和用于校准的目标的坐标系。 通过平面目标上的结构光投影的条纹的相机坐标系中的坐标的计算和通过平面目标上的条纹的相机坐标系中的坐标拟合的结构光方程， 目标任意多次。 本发明提供的结构光视觉传感器的校准方法易于操作，不需要辅助设备，这不仅可以提高结构光的校准效率，而且可以扩展结构光校准的应用范围 -光。

公开(公告)号：US20120024575A1

公开(公告)日：2012-02-02

申请号：US13202209

申请日：2009-02-20

Applicant: Guangjun Zhang ,  Yuanchun Xie

Inventor： Guangjun Zhang ,  Yuanchun Xie

IPC: H05K7/20 ,  H05K3/30

CPC classification number: H01L23/3677 ,  H01L2224/48091 ,  H01L2224/48247 ,  H01L2224/48472 ,  H05K1/0204 ,  H05K1/0206 ,  H05K1/0243 ,  H05K1/182 ,  H05K3/0061 ,  H05K3/429 ,  H05K2201/0959 ,  H05K2201/09745 ,  H05K2201/10166 ,  H05K2201/10416 ,  Y10T29/4913 ,  H01L2924/00014 ,  H01L2924/00

Abstract: A thermal pad (602, 612, 622, 702, 712) formed on a Printed Circuit Board and a method (900) of formed the thermal pad (602, 612, 622, 702, 712) are provided. The thermal pad (602, 612, 622, 702, 712) comprises in its interior one or more coins (604, 614, 624, 704, 714) has a height equal to a thickness of the PCB, and is made of metal or alloy, inserted into a corresponding one of one or more plated cutouts straight through the PCB in the thermal pad, and bonded to side walls of the corresponding one of the one or more plated cutouts with a paste capable of resisting a temperature of 250° C. or above. The plurality of through via (606, 616, 626, 706, 716) are plated, and lugged with a solder mask. The thermal pad (602, 612, 622, 702, 712) has a flat top surface and a flat bottom surface, either of which is coplanar with a corresponding one of top and bottom surfaces of the PCB. A PCB having formed thereon the above thermal pad (602, 612, 622, 702, 712) is also provided.

Abstract translation: 形成在印刷电路板上的散热垫（602,612,622,702,712）和形成热垫（602,612,622,702,712）的方法（900）。 散热垫（602,612,622,702,712）在其内部包括一个或多个硬币（604,614,624,704,714）的高度等于PCB的厚度，并且由金属或 合金，将一个或多个电镀切口中相应的一个插入到热垫中的PCB上，并且用能够耐受250℃温度的粘合剂粘合到一个或多个电镀切口中相应的一个的侧壁上 或以上。 多个通孔（606,616,626,706,716）被电镀，并且用焊接掩模拉出。 热垫（602,612,622,702,712）具有平坦的顶表面和平坦的底表面，其中任一个与PCB的顶表面和底表面中的相应一个共面。 还提供了其上形成有上述散热垫（602,612,622,702,712）的PCB。

公开(公告)号：US08078025B2

公开(公告)日：2011-12-13

申请号：US12258398

申请日：2008-10-25

Applicant: Guangjun Zhang ,  Junhua Sun ,  Zhenzhong Wei ,  Fuqiang Zhou ,  Qingbo Li ,  Zhen Liu ,  Qianzhe Liu

Inventor： Guangjun Zhang ,  Junhua Sun ,  Zhenzhong Wei ,  Fuqiang Zhou ,  Qingbo Li ,  Zhen Liu ,  Qianzhe Liu

IPC: G06K9/00 ,  G01C11/12

CPC classification number: G01B11/2513 ,  B61K9/08 ,  G01B11/2522

Abstract: The invention discloses a vehicle dynamic measurement device for comprehensive parameters of rail wear, which comprises a vision sensor, a computer and a milometer. A high-speed image acquisition card and a measurement module are installed in the computer. The vision sensor comprises imaging system for rail cross-section and a raster projector which can project more than one light plane perpendicular to the measured rail. The measurement module is used for calculating vertical wear, horizontal wear, the amplitude and wavelength of corrugation wear. The invention also discloses a vehicle dynamic measurement method for comprehensive parameters of rail wear. The invention can increase the sampling rate of image sensing and acquisition hardware equipment with no need of improving the performance of it, thereby satisfy high-speed on-line dynamic measurement requirements for corrugation wear, and the amplitude and wavelength of corrugation wear can be calculated more precisely.

Abstract translation: 本发明公开了一种用于轨道磨损综合参数的车辆动态测量装置，其包括视觉传感器，计算机和千米。 计算机中安装有高速图像采集卡和测量模块。 视觉传感器包括用于轨道横截面的成像系统和光栅投影仪，该投影仪可以投影多个垂直于测量轨道的光平面。 测量模块用于计算垂直磨损，水平磨损，波纹磨损的振幅和波长。 本发明还公开了一种用于铁路磨损综合参数的车辆动态测量方法。 本发明可以增加图像感测和采集硬件设备的采样率，不需要提高其性能，从而满足波纹磨损的高速在线动态测量要求，并且可以计算波纹磨损的幅度和波长 更确切地说。

公开(公告)号：US07552026B2

公开(公告)日：2009-06-23

申请号：US11687333

申请日：2007-03-16

Applicant: Guangjun Zhang ,  Jie Jiang ,  Qiaoyun Fan

Inventor： Guangjun Zhang ,  Jie Jiang ,  Qiaoyun Fan

IPC: G06F3/00

CPC classification number: B64G1/363

Abstract: The disclosure relates to an APS based integrated sun sensor comprising: a diaphragm unit, a detection unit, a processing electronics unit and an interface unit. The diaphragm unit is operatively connected with the detection unit for forming a sunspots image. The detection unit is configured for outputting a gray value of each pixel. The processing electronics unit is operatively connected with the detector unit and the interface unit respectively, for evaluating an attitude angle on the basis of the gray value and coordinate of each pixel. The interface unit is operatively connected with a host computer, for transferring the attitude angle to the host computer. This disclosure has such merits as high accuracy, wide FOV (Field of View), low power consumption, low weight, small size and high update rate.

Abstract translation: 本公开涉及一种基于APS的集成太阳传感器，包括：光阑单元，检测单元，处理电子单元和接口单元。 隔膜单元与检测单元可操作地连接，用于形成太阳黑子图像。 检测单元被配置为输出每个像素的灰度值。 处理电子单元分别与检测器单元和接口单元可操作地连接，用于基于每个像素的灰度值和坐标来评估姿态角。 接口单元与主计算机可操作地连接，用于将姿态角传送到主计算机。 本公开具有高精度，宽FOV（视场），低功耗，低重量，小尺寸和高更新率等优点。

公开(公告)号：US20090012731A1

公开(公告)日：2009-01-08

申请号：US12019539

申请日：2008-01-24

Applicant: Guangjun Zhang ,  Xinguo Wei ,  Qiaoyun Fan ,  Jie Jiang

Inventor： Guangjun Zhang ,  Xinguo Wei ,  Qiaoyun Fan ,  Jie Jiang

IPC: G01C25/00

CPC classification number: G01J1/08 ,  G01C21/02 ,  G01C25/00 ,  G01J2001/4266

Abstract: A method for calibration of a digital sun sensor is disclosed. The method comprises following steps. First, an integrated mathematic model for imaging of a sun sensor is established according to the external and internal parameters of the calibration system of the sun sensor. Next, the two axis of the rotator are rotated by different angles. Then, calibration points' data are acquired and sent to a processing computer through an interface circuit. Finally, a two-step calibration program is implemented to calculate the calibration parameters by substituting the calibration points' data to the integrated mathematic model. The disclosure also relates to an application device of the calibration method. The device comprises: a sun simulator to provide the incident sunlight, a two-axis rotator to acquire different the calibration points' data, and a processing computer to record the calibration points' data and calculate the calibration parameters. The calibration method and device apply to many kinds of digital sun sensors. By integrated external and internal parameters modeling, the disclosure improves calibration precision. Meanwhile, the whole calibration process is simplified because precise installation and adjustment is not required.

Abstract translation: 公开了一种用于数字太阳传感器校准的方法。 该方法包括以下步骤。 首先，根据太阳传感器的校准系统的外部参数和内部参数建立太阳传感器成像的综合数学模型。 接下来，旋转体的两轴旋转不同的角度。 然后，通过接口电路获取校准点数据并发送到处理计算机。 最后，通过将校准点的数据代入综合数学模型，实施两步校准程序来计算校准参数。 本公开还涉及校准方法的应用装置。 该装置包括：用于提供入射太阳光的太阳模拟器，用于获取不同校准点数据的双轴旋转器，以及记录校准点数据并计算校准参数的处理计算机。 校准方法和装置适用于多种数字式太阳传感器。 通过集成的外部和内部参数建模，本公开提高了校准精度。 同时，由于不需要精确的安装和调整，因此简化了整个校准过程。

公开(公告)号：US20080298673A1

公开(公告)日：2008-12-04

申请号：US12025741

申请日：2008-02-04

Applicant: Guangjun Zhang ,  Junhua Sun ,  Zhenzhong Wei ,  Qianzhe Liu

Inventor： Guangjun Zhang ,  Junhua Sun ,  Zhenzhong Wei ,  Qianzhe Liu

IPC: G06K9/00

CPC classification number: G06K9/209 ,  G06K2209/40 ,  G06T7/593 ,  G06T7/85 ,  G06T2207/10012

Abstract: The present disclosure is directed to a three-dimensional data registration method for vision measurement in flow style based on a double-sided target. An embodiment of the disclosed method that comprises A. Setting up two digital cameras which can observe the entire measured object; B. Calibrating intrinsic parameters and a transformation between the two digital camera coordinate frames; C. A double-sided target being placed near the measured area of the measured object, the two digital cameras and a vision sensor taking images of at least three non-collinear feature points of the double-sided target; D. Removing the target, measuring the measured area by using the vision sensor; E. Respectively computing the three dimensional coordinates of the feature points in the global coordinate frame and in the vision sensor coordinate frame; F. Estimating the transformation from the vision sensor coordinate frame to the global coordinate frame through the three dimensional coordinates of the three or more non-collinear feature points obtained at step E, then transforming the three dimensional data of the measured area to the global coordinate frame; and G. Repeating step C, D, E, F, then completing three dimensional data registration for all measured areas. The present disclosure improves three dimensional data registration precision and efficiency.

Abstract translation: 本公开涉及一种用于基于双面目标的流动式视觉测量的三维数据登记方法。 所公开的方法的实施例包括A.设置可以观察整个测量对象的两个数码相机; B.校准固有参数和两个数码相机坐标系之间的变换; C.一个双面目标放置在测量对象的测量区域附近，两个数字照相机和视觉传感器拍摄双面目标的至少三个非共线特征点的图像。 D.去除目标，使用视觉传感器测量测量面积; E.分别计算全局坐标系和视觉传感器坐标系中特征点的三维坐标; F.通过在步骤E获得的三个或多个非共线特征点的三维坐标来估计从视觉传感器坐标系到全局坐标系的变换，然后将测量区域的三维数据变换为全局坐标 帧; 和G.重复步骤C，D，E，F，然后完成所有测量区域的三维数据登记。 本公开改进了三维数据配准精度和效率。

公开(公告)号：US20080131002A1

公开(公告)日：2008-06-05

申请号：US11687338

申请日：2007-03-16

Applicant: Guangjun Zhang ,  Jie Jiang ,  Qiaoyun Fan ,  Xuetao Hao

Inventor： Guangjun Zhang ,  Jie Jiang ,  Qiaoyun Fan ,  Xuetao Hao

IPC: G06K9/46 ,  G06K9/36 ,  G06K9/66

CPC classification number: G06T7/66

Abstract: The disclosure relates to a rapid and high precision centroiding method for spots image comprising the following steps. First, the method requires convoluting the gray value of a pixel with a Gaussian filter and judging whether the result thereof exceeds a predetermined threshold. If the value exceeds the predetermined threshold, the method requires marking the current pixel with a flag to identify which spot it belongs to, and then accumulating the product of the gray value and a coordinate value of the same spot; and at the same time, accumulating the gray value of the same spot; and saving the results of the accumulation respectively. If the gray value of the pixel does not exceed the predetermined threshold, the method requires marking the current pixel as a background flag. After all pixels of the image has been disposed of completely, the method includes calculating a quotient of the accumulations of the product of the gray value and the coordinate value and the accumulations of the gray value, and outputting the quotients. At the same time, a centroiding system for spots image is also presented.

Abstract translation: 本公开涉及一种用于斑点图像的快速和高精度重心方法，包括以下步骤。 首先，该方法需要用高斯滤波器对像素的灰度值进行卷积，并判断其结果是否超过预定阈值。 如果该值超过预定阈值，则该方法需要用标志标记当前像素，以标识其属于哪一个点，然后累积灰度值与同一点的坐标值的乘积; 同时累积同一斑点的灰度值; 并分别节省积累的结果。 如果像素的灰度值不超过预定阈值，则该方法需要将当前像素标记为背景标志。 在完全处理图像的所有像素之后，该方法包括计算灰度值与坐标值的乘积的积分和灰度值的积累的商，并输出商。 同时，还提出了斑点图像的重心系统。

公开(公告)号：US20080029652A1

公开(公告)日：2008-02-07

申请号：US11687333

申请日：2007-03-16

Applicant: Guangjun Zhang ,  Jie Jiang ,  Qiaoyun Fan

Inventor： Guangjun Zhang ,  Jie Jiang ,  Qiaoyun Fan

IPC: B64G1/36

CPC classification number: B64G1/363

Abstract: The disclosure relates to an APS based integrated sun sensor comprising: a diaphragm unit, a detection unit, a processing electronics unit and an interface unit. The diaphragm unit is operatively connected with the detection unit for forming a sunspots image. The detection unit is configured for outputting a gray value of each pixel. The processing electronics unit is operatively connected with the detector unit and the interface unit respectively, for evaluating an attitude angle on the basis of the gray value and coordinate of each pixel. The interface unit is operatively connected with a host computer, for transferring the attitude angle to the host computer. This disclosure has such merits as high accuracy, wide FOV (Field of View), low power consumption, low weight, small size and high update rate.

Abstract translation: 本公开涉及一种基于APS的集成太阳传感器，包括：光阑单元，检测单元，处理电子单元和接口单元。 隔膜单元与检测单元可操作地连接，用于形成太阳黑子图像。 检测单元被配置为输出每个像素的灰度值。 处理电子单元分别与检测器单元和接口单元可操作地连接，用于基于每个像素的灰度值和坐标来评估姿态角。 接口单元与主计算机可操作地连接，用于将姿态角传送到主计算机。 本公开具有高精度，宽FOV（视场），低功耗，低重量，小尺寸和高更新率等优点。

公开(公告)号：US06845326B1

公开(公告)日：2005-01-18

申请号：US09706747

申请日：2000-11-07

Applicant: Suranjan Panigrahi ,  Guangjun Zhang

Inventor： Suranjan Panigrahi ,  Guangjun Zhang

IPC: G01J3/02 ,  G01J3/28 ,  G01N21/31 ,  G01N33/02 ,  G06F19/00

CPC classification number: G01J3/28 ,  A01B79/005 ,  A01D41/1277 ,  G01J3/02 ,  G01J3/0291 ,  G01N21/31 ,  G01N21/85 ,  G01N33/02

Abstract: An optical sensor for use in measuring constituents of an agricultural product. An optical sensing window passes a stream of the agricultural product, and a radiation source irradiates the stream as it passes through the optical sensing window. A receiver receives radiation transmitted through the stream and converts it into a corresponding electrical signal using a spectrometer. The electrical signal is digitized to produce a series of data points corresponding to particular wavelengths. A processor normalizes the data points using a reference value in order to generate processed data points that can be used to predict a constituent content of the agricultural product.

Abstract translation: 一种用于测量农产品成分的光学传感器。 光学传感窗口通过农产品流，并且辐射源在流经光学感测窗口时照射该流。 接收器接收通过流传输的辐射，并使用光谱仪将其转换成相应的电信号。 电信号被数字化以产生对应于特定波长的一系列数据点。 处理器使用参考值对数据点进行归一化，以生成可用于预测农产品的构成内容的处理数据点。