xsens imu

This script implements the following functions: 1. Backing up mysql databases online; 2. Saving backup logs to log files; 3. compressing data backup files; 4. Remotely ftp the compressed file to the backup server; 5. deleting data that has been backed up locally for more than seven days is mainly to prevent the abnormal growth of the disk space of the production server from leading to performance bottlenecks. The specific implementation of shell is as follows :#! /Bin/sh#------------------------

this goal, there is, problems to solve as follows: How to build a quadrotor that's able to fly in a stable state? How does the quadrotor recognize the target, flying towards it precisely, and landing safe and sound? Technical Solutions:About The first problem, thanks to the dedicated efforts on the early stage, Shanghaiuniversity have succeeded in Installing the structure of a quadrotor, and configuring architecture of its electronics part. This project is use FPGA as the main

"Baidu ar" "Android" Demo project using the demo project acquisition and precautions Baidu AR platform Address: https://ar.baidu.com/testapply Technical Document Address: Https://ai.baidu.com/docs#/DuMixAR-Android-SDK/top AR Content Management Address: https://dumix.baidu.com/content Sdk:https://ai.baidu.com/sdk#ar Note: First register Baidu account, choose free Trial can Running Configuration of Demo projectNote: After the resource bundle upload is submitted, there

Feel some tools even simple also always forget, right when this is Notepad, graffiti. Linux: Ros: 1 Ros View image type of topic Rosrun Image_view Image_view image:=/imagetopic this: = is actually changing the meaning of its built-in topic name 2 Ros View the contents of the topic For example, I have a topic named/ardrone/imu, Rostopic Echo/ardrone/imu 3) RQT Sometimes it is necessary to show t

gesture actually represents a 3D posture, but Z,roll,pitch is ignored. Imu_data (Senser_msgs/imu)3D Orientation (imu use): 3D direction provides the roll,pitch,yaw angle in the coordinate system of the robot in the world coordinate system. Roll and pitch angles are described as absolute angles, and the yaw angle is described as a relative angle. A covariance matrix indicates the uncertainty of direction me

such problems, you can increase the log_buffer size, adjust the log file to the bare device, i/0 fast disk) in the PGA to generate a datablock block of the post image (11.9). Generate a post-image (5.2) of the Undo Segment Header Transaction table in the PGA. The post image of the undo block generated in the PGA (5.1) makes the first three redo vectors a redo recorder written to the private strand in the shared pool. Writes the pre-image value in the DataBlock to the

Internet connection. 6. After the installation process is complete, the PC closes. Please unplug the USB drive and turn the computer back on. 7. When first started, the user name is administrator and the password is ClearPath. 8. Follow the configuration instructions on your screen. If the computer restarts, wait for the PC to boot to the login screen, and then re-enter the logon credentials. 9. After the computer configuration is complete, you can use the utility password to change the adm

, and the error message is that the serial port cannot be opened, because the same serial port cannot be opened twice at the same time (the FileReader and the FileWriter are declared in ReadSerial ). In this way, full-duplex communication cannot be achieved. I don't know if there is any hero who can talk about the solution./*** IMU. java 1.0* Main Program for Serial Communication** Created: March 27,200 1** Author: Qingye Jiang (John)* American GNC Co

= q (2:4)/sin (THETA/2);The rotation vector and quaternion from OpenCV can be exchanged with the following code:% Matlab code by MULINB, Convert a quaternion to a rotation vectorfunction Rvec = Quat2rvec (q) theta = ACOs (q (1)) * 2;axis = Q (2:4)/sin (THETA/2); axis = axis/norm (axis); Rvec = Axis*theta;% Matlab code by MULINB, Convert a rotation vectors to a quaternionfunction q = rvec2quat (Rvec) theta = norm (Rvec); axis = RV Ec/theta;sht = sin (theta/2), q = [cos (THETA/2), Axis*sht];4. Gy

move. The famous people of Qing Dynasty were:[Juhna] Manchu Zhenglanqi people, the world of the fall, battle Shandong, Wine Yun Wei ride. Zomoudou inherit, add second light car Douwei.[Kazakhstan] Manchuria Zhenglanqi people, the world of the fall, Battle Fujian killed, give a cloud ride Wei.[Han Ding] Manchu Zhenglanqi people, the World Habitat Sinni, Battle clan died, a cloud ride Wei.[Saertu] Manchu Zhenglanqi people, the World Habitat Sinni, Hyobu pen-style, Wu Sangui anti, unyielding death

must download a large installation package in order to enjoy a few minutes of VR experience, this bottleneck will inevitablyHinder the widespread popularization of VR. Therefore, the online VR communication platform is also an important link in the VR industry chain. YouTube has successfully launched a 360-degree video that allows users to select and switch viewing angles at any time. Google, of course, will be the first to launch VR video content on YouTube, so that users do not need to downl

markets and non-contact temperature measurement in applications.650) this.width=650; "Src=" Http://www.kitarm.com/images/stories/201411/201411B1/Increasingly_popular_Wearable_ Sensors_you_know_what_20.jpg "alt=" increasingly popular wearable sensors you know what "width=" "" height= "204" style = "margin:0px;padding:0px;border:0px;"/>2. Analog-to-semiconductor (ADI)As a pioneer in the micro-mechanical IC industry, Analog Devices, Inc. (ADI) launched the first fully integrated imems (MEMS) accel

the predator's military uav......just kiddingAnyway, under objective conditions, it would be unrealistic to say that 20 minutes flew to Pyongyang.In the end, Dave and Aaron walked west to the west coast of North Korea through an abandoned pit tunnel in Pyongyang, and measured a straight-line distance of 30km (not) from GE, and the seals said they found them based on the GPS signal from the protagonist's watch. This is another common intellectual error in a movie: And do not say how the watch fr

Common Linux and ROS commands, linux operating system I feel that some tools are always forgotten even if they are simple. The right tool is notepad and graffiti. Linux: ROS: 1) view image topic by ROS Rosrun image_view image: =/imagetopic this: = actually changes the name of its built-in topic. 2) view topic content by ROS For example, I have a topic named/ardrone/IMU, Rostopic echo/ardrone/IMU

Original URL: http://blog.csdn.net/tsy20100200/article/details/47101661Recently, due to the need for work, the Linux IIO subsystem has been contacted, and the Linux IIO subsystem has been analyzed for this directory, which was rarely contacted before.1, first IIO subsystem in the kernel tree location: drivers/staging/iioDetailed IIO Subsystem Description document location: Drivers/staging/iio/documentation (document is a good thing, read the document in detail, facilitate a deeper understanding

1. VuforiaUsed for graphics recognition, Qualcomm provides AR toolkit.2. Gyrodroid v5.3Android Apple Gravity System plugin, Unity3d plugin.Generally use the inside of the IMU to do space positioning.3.Google VR SDKDistortion mapping for head tracking, 3D glasses.4. In addition, some common algorithms:Multi-sensor fusion, IMU positioning and image positioning fusion, filtering, rendering prediction and so on

1, Inertial measurement unit IMU (inertialmeasurement unit)Attitude Heading Reference System ahrs (attitude and Heading Reference systems)Geomagnetic angular velocity gravity marg (magnetic, Angular rate, and Gravity)MEMS (Micro electrical Mechanical systems)DOF Dimension DOF (Dimension of Freedom)Unmanned aerial Vehicle UAV (unmanned aerial Vehicle)Extended Kalman Filter EKF (Extended Kalman Filter)Lossless Kalman Filter UKF (unscented Kalman Filter)

of the four-rotor aircraft, and the position control is based on the perfect attitude control. As already mentioned, it is unreliable to obtain the angle value only by gyroscope integral, because of the inherent drift of the gyroscope, the error caused by the integral becomes more and more large, and the accelerometer is susceptible to noise and vibration disturbance. Therefore, the two kinds of data are fused using various algorithms to obtain the ideal attitude data. The more common fusion al

Microsoft HoloLens is the world's first holographic computer with completely wireless cables. By empowering users with a holographic experience in new ways, HoloLens redefined personal computing (Personal Computing). To pin the holographic graphics to the real world around you, HoloLens incorporates state-of-the-art optics and sensors.Equipment Specifications Device SpecificationsOptical components Holographic Mirror (waveguide) 2 x HD (HD) Light engines Automatic pupil distance

　　In the Google Open source SLAM software cartographer, the more complex, better-performing scan matching and UKF algorithm is used relative to SLAM for Dummies, where the cartographer algorithm used in UKF is briefly described.　　(i) filter parameter settingconstexpr static Floattype Kalpha = 1e-3;constexpr static Floattype Kkappa = 0.;constexpr static Floattype Kbeta = 2.;constexpr static Floattype Klambda = SQR (kalpha) * (n + kkappa)-N;constexpr static Floattype kMeanWeight0 = KLAMBDA/(N + KL