how to calibrate accelerometer

Reference [1] http://developer.apple.com/library/ios/#documentation/EventHandling/Conceptual/EventHandlingiPhoneOS/Introduction/Introduction.html#//apple_ref/doc/uid/TP40009541-CH1-SW1 1. Event Type It mainly involves three types of events: Touch, action, and remote control. Typedef Enum {Uieventtypetouches,Uieventtypemotion,Uieventtyperemotecontrol,} Uieventtype; 2. accelerator and Gyroscope Uiaccelerometer and uiacceleration may be deprecated in the future. Therefore, you should use the inter

wish to create a custom hardware profile [No] Yes Device Ram size: the amount of physical RAM on the device, in megabytes.HW. ramsize [96]: 128 Touch-screen support: whether there is a touch screen or not on the device.HW. touchscreen [Yes]: Yes Track-ball support: whether there is a trackball on the device.HW. trackball [Yes]: Yes Keyboard support: whether the device has a QWERTY keyboard.HW. keyboard [Yes]: Yes DPAD support: whether the device has DPAD keysHW. DPAD [Yes]: Yes GSM Modem suppor

Email: wei7758@126.com Blog: http://blog.csdn.net/yinwei520 Author: yww Time: 2011-8-22 I. First, establish such a global concept: Position and work of sensor in Android system architecture. The diagram is as follows: From the diagram above, we can see that in Android, sensor is divided into four layers: Driver layer (sensor driver), Hardware Abstraction Layer (native), middle layer (framework), and application layer (Java ). The hardware abstraction layer and the intermediate layer can be combi

vertical camera pixelsHW. Camera. maxverticalpixels [480]: GPS support: whether there is a GPS in the device.HW. GPS [Yes]: Battery support: whether the device can run on a battery.HW. Battery [Yes]: Accelerometer: whether there is an accelerometer in the device.HW. Accelerometer [Yes]: Audio Recording support: whether the device can record audioHW. audioinput [

instead of a solid rectangle. We cancpSpaceAdd fourcpSegmentShapeObject (cpSegmentShapeRepresents a straight line, so the four are a rectangle ). ThestaticBodyAttribute (a struct not affected by gravity) instead of a new one like a wooden boxcpBodyInstance, because we do not want this border rectangle to slide out of the screen or be hit by a falling wooden box. You can also add some wooden boxes for interaction. Add an accelerator so that you can adjust the Gravity Vector by tilting the phone

Sample Apps by Android Team, Alibaba Android Sample Apps by Android Team code download: http://pan.baidu.com/s/1eSNmdUE, code source address: https://code.google.com/archive/p/apps-for-android/ Note: the code is not a project that can be run directly. You need to create a new project and copy the relevant files to the project. This is the Learning Record of the Amazed project code. 1. Create a custom View @. In onSizeChanged, compare the parameter w (width) with h (height) to determine whether t

attention to it, switching scenarios may cause insufficient memory. 3.2 ccscene: Scenario 3.3 cclayer: Layer Void addchild (ccnode * child ); ? Nbsp; void addchild (ccnode * child, int zorder ); ? Nbsp; void addchild (ccnode * child, int zorder, int tag ); The child parameter is the node to be added. For scenarios, we usually add nodes as layers. The added layer is placed under the added layer. If you want to specify the order for them, you can use different zorder values. zorder repre

); paint.setColor(0xff00ff00); paint.setStyle(Style.STROKE); paint.setStrokeWidth(2); paint.setAntiAlias(true); }; protected void onDraw(Canvas canvas) { int width = getWidth(); int height = getHeight(); int centerx = width/2; int centery = height/2; canvas.drawLine(centerx, 0, centerx, height, paint); canvas.drawLine(0, centery, width, centery, paint); // Rotate the canvas with the azimut if (azimut != null) canvas.r

have been used by power bureaus to fully understand the load and electricity usage in various regions, and to identify specific causes of energy change. Japan has pioneered the use of non-invasive electrical load monitoring systems (which work through neural networks), designed specifically for residential residents to determine what equipment the residents are using. In addition, some health care industry security experts have developed a similar monitoring system, through the analysis of th

The accelerometer is the basis for the entire iOS screen rotation, depending on the accelerometer, the device can determine the current device direction, the iOS system defines the following seven device orientations: Copy Code code as follows: typedef ns_enum (Nsinteger, uideviceorientation) { Uideviceorientationunknown, Uideviceorientationportrait,//Device oriented vertically, home button

The following are several constants defined in the API that represent sensor. Int Type_accelerometer A constant describing an accelerometer sensor type. Acceleration Sensor Int Type_all A constant describing all sensor types. All Types A constant describing all sensor types. Int Type_gravity A constant describing a gravity sensor type. Int Type_gyroscope A constant describing a gyroscope sensor type rotary instrument sensor Int Typ

This example describes Android's ability to create an Android dynamometer using the sensor sensor to refresh the UI in a thread. Share to everyone for your reference, specific as follows: In the previous article, "Android based on sensor sensors to obtain gravitational induction acceleration" we introduced the basic knowledge of sensor and an example of using the accelerometer to obtain data. One question was mentioned earlier, that is, the sensor r

This example describes the gravity-inductive usage of Android programming. Share to everyone for your reference, specific as follows: Gravity sensors rely mainly on the mobile phone's accelerometer (accelerometer) to achieve There are eight sensors in the development of Android, but not every real machine supports these sensors. Because many functional users are not care, it is possible that developers wi

to the size of the calibration plate to specify the three-dimensional coordinates of these corner points, and then call Fisheye::calibrate () to calibrate, Using the internal and distorted parameters of the calibration results, the fisheye::undistortimage () is called to do the image distortion operation. Finally, we call a distorted picture to be tested and use the calibration result to

plates, here mainly in the cool fish series as an example to illustrate.When the hard drive is powered on, it will automatically load the app module, complete the loading of the ATA module, complete a series of subsequent tests and read the parameter information, and let the hard disk work in the AGE=50 state.Calibration program is used to calibrate the repair of hard disk, head test, firmware area of bad track repair, data area bad track repair, a h

the XC-007 software to latest version?A:run Update Tool and check the new function added in new version If the new functions meet your need or helps fix some p Roblem, run software update.Q:How to calibrate XC-007 touch screen?A:touch anywhere on Touch screens, power on the device, followed by clicking the Cross Center.Q:What ' s The difference between "Direct processing" and "Start processing"?A: "Direct Processing":-process the key directly accordi

It turned out to be a problem with the Windows 7 built-in correction color (calibrate color) feature. Using this correction color feature will result in an ICC profile, which Windows 7 will use as the default display, and once the ICC profile is defined with a correction color, the speed of Windows Photo Viewer will become as slow as crawling, and the ICC profile will be restored as soon as it is deleted Normal. If you encounter this problem and need

project or the compilation environment. Detailed settings under VC6 can be seen in the code's comments (modify the properties of the project) The settings in VS2008 can also be referenced in the code comments vc++2005 settings (Modify the compilation environment)2. Calibration Because OpenCV in cvstereocalibrate always get very exaggerated results (see below 5.1 problem description), so finally decided to use Bouguet MATLAB Calibration Toolbox Stereoscopic Calibration, and then read the results

This article describes how to obtain a list of sensors supported by your Android device.Currently, Android 4.4 (API level 19) supports the following sensors:Type_accelerometer Accelerometer, Unit m/s2, measurement of the accelerometer type values (sensors type) applied to the device x, Y, Z axes: 1 (0x00000001) Type_ambient_ Temperature temperature sensor, Unit is ℃ sensor type value (sensors type): (0x0000

*mx + ey*my + ez*mz) *INVe; Final floats = (Ex*ax + ey*ay + ez*az) *INVe; if(I.length = = 9) {i[0] = 1; I[1] = 0; I[2] = 0; i[3] = 0; I[4] = c; I[5] =s; i[6] = 0; I[7] =-s; I[8] =C; } Else if(I.length = = 16) {i[0] = 1; I[1] = 0; I[2] = 0; i[4] = 0; I[5] = c; I[6] =s; i[8] = 0; I[9] =-s; i[10]=C; i[3] = i[7] = i[11] = i[12] = i[13] = i[14] = 0; i[15] = 1; } } return true; } 2. English original explanationIf I Understand your problem correctly you want you