accelerometer readings

I. INTRODUCTION of COREMOTION FrameworkWe know that there are some iOS apps that have special requirements, such as:1. E-Compass Compass application: Let us know the direction.2. Sport type Software: Let us know how many kilometres we run.3. Shake and shake function in social software.4. Play in the role class in the game according to the device's shaking and so on operation.In fact, they're mostly using a core motion framework in iOS.CoreMotion.framework Use the framework that iOS prov

An accelerometer is a sensor that can sense the linear acceleration of a device. It is widely used in guidance and control of aviation, navigation, aerospace and weapons. There are many types of linear accelerometer. Currently, three-axis accelerometer is used in mobile devices such as IOS. It can be used to sense the linear acceleration changes in the direction

Cocos2d-x mobile game mobile IOSAn accelerometer is a sensor that can sense the linear acceleration of a device. It is widely used in guidance and control of aviation, navigation, aerospace and weapons. There are many types of linear accelerometer. Currently, three-axis accelerometer is used in mobile devices such as IOS. It can be used to sense the linear accele

Recently before the improvement of the visual fixed-point algorithm, there was only one location ring, now ready to cascade a series of speed loop, but to solve the drone translation speed is still quite a headache, the online information is very small, we need to move our own brain to solve this problem.The first step is to measure the level of speed, the traditional method is GPS, I designed the UAV in the application scene of the GPS signal although there is, but not so stable, followed by th

One, the "filter" of the dataThe raw data obtained directly from the accelerometer is often not used directly, but some disturbing data needs to be removed, a process called "filtering". The word "filter" is derived from the process of radio signal processing in radio technology. In fact they are the same from the mathematical point of view, they are some kind of sampling signal, this "filtering" process is very complex, to achieve "filter" by Fourier

mtoast;mtoast = ToaSt.maketext (Shakeactivity.this, "hehe, success!. \ n Try it again! Mtoast.show (); Mvibrator.cancel (); Mshakelistener.start ();}}, 2000);}); Define vibrate public void Startvibrato () {mvibrator.vibrate (new long[] {500, 200, 500, 200},-1);//The first {} Inside is the rhythm array,//The second parameter is the number of repetitions, -1 for non-repetition, non-1 to start repeating} @Overrideprotected void OnDestroy () {Super.ondestroy () from the specified subscript of patte

BIN CHEN May 23, 2012, Evening 10:34 12 Some mobile phone players and enthusiasts are interested in the components of some mobile phones and even want to know how they work. Now, both mobile phones and tablets are basically built-in acceleration sensors to identify the direction of the device's rotation. Bill Hammack, an engineer from Illinois University, briefed us on how this acceleration sensor works and is not a tedious sermon, but an animated film to help explain it.Bill Hammack used Andr

/*** Coremotion**/#import "ViewController.h"#import @interface Viewcontroller ()@property (nonatomic, strong) Cmmotionmanager *mgr;//must be made into a global@end@implementation Viewcontroller-(void) Viewdidload {[Super Viewdidload];[Self push];[self-pull];}-(void) Touchesbegan: (Nsset *) touches withevent: (Uievent *) event{cmacceleration acceleration = self.mgr.accelerometerData.acceleration;Logred (@ "%f---%f----%f", acceleration.x, ACCELERATION.Y, acceleration.z);}/*** Pull---when needed, c

First, the conceptAccelerometer: Measures the acceleration in three directions of the x, Y, Z axis by sensing the total amount of inertial forces in a particular direction.Gyroscope: Measures the value of rotation around the x, Y, and z three directions. Feature: If you keep your phone flat while rotating it, the accelerometer value will not change, at which point the rotation value around the z axis is changed. Rotating the device clockwise generates

Cocos2d-x accelerometer instance: moving ball, cocos2d-x AccelerationNext we will use an example to describe how to access the accelerometer through layer-based accelerometer events. As shown in this example, there is a ball in the scene. When we place the mobile device horizontally, the screen is up, and then shake the mobile device left and right to change the

One accelerometer principleThe 1.1 accelerometer consists of a MEMS sensor and a signal processing chip.1.2 MEMS Accelerometer Working principleIt is composed of upper capacitance, medium capacitance plate (movable), lower capacitance plate, etc., when the acceleration reaches a certain value, the medium capacitance plate will move, and the distance from the uppe

Because the data acquisition station is basically installed in the field or the roof, the installation location and vibration have certain influence on the accuracy of the test data. So want to have a position state data, just found Kylin made on the ADXL345, such a digital output acceleration sensor. As shown in the red box:1 , ADXL345 OverviewADXL345 is a 3-axis, digital output accelerometer based on Imems technology from Adi. The characteristics of

); } public String Getlastknowny () {return (y = =-999)? "Null": string.valueof (y); } public String Getlastknownz () {return (z = =-999)? "Null": String.valueof (z); } public void Setrate (String rate) {mrate = Sensorrate.getint (rate),} public String getrate () {return sensorrate.getstring (Mrat e); } public void setcycle (int milliseconds) {mcycle = milliseconds,} public int getcycle () {return mcycle;} public void S eteventcycle (int milliseconds) {meventcycle = milliseconds;} public int get

In the use of Daniel touchsnow development plug-in cocoseditor game development encountered some problems, and then try to solve, recently want to try the coocs2d-html5 can use gravity sensing, found that is OK, however, this can only be tested on a mobile real machine, but not on a computer simulator,You must first set the Accelerometer in the onDidloadFromCCB () method: This. rootNode. onAccelerometer = function (event) {this. controller. onAcc

In the use of Daniel Touchsnow developed plug-in cocoseditor development game encountered some problems, and then try to solve, recently want to try COOCS2D-HTML5 can use gravity sensor, found that is possible, but this can only be tested on the mobile real machine, The simulator on the computer is not working,You first need to set the accelerometer within the ONDIDLOADFROMCCB () method:This.rootNode.onAccelerometer = function (event) { this.contro

First, the principle of introduction:The function of shaking in Android phone is already very common, recently contacted this function, the principle is very simple: using accelerometer, when shaking the phone, listen to the acceleration in all directions of change, when the acceleration value exceeds the set sensitivity, then trigger shake function.Second, the use of the class:SensormanagerSensoreventlistenerThird, the function realization:1, shake a

Android: Accelerometer Welcome to the sensor world.The sensor literally refers to the instrument that transmits the feeling. What is the feeling?Visual, auditory, taste, touch, and smell.Some people say that the existence and development of sensors allow objects to have the senses such as touch, taste, and smell, so that objects can gradually become active.At present, Android devices have been integrated into dozens of sensors, and we usually have acc

Acceleration Sensor Accelerometer The Android system supports powerful management services for sensors. The steps for developing sensor applications are as follows: (1) Call the getSystemService (Context. SENSOR_SERVICE) method of Context to obtain the Sensor Manager object. The SensorManager object represents the system's Sensor management service. (2) Call the getdefasensensor (int type) method of SensorManager to obtain the sensor of the specified

Symbol Description:T: The time between the measured value and the last measured value;RESTX (n-1), Resty (n-1), Restz (n-1): The optimal value vector for the position of the n-1 time;GRATEXZ (n), Grateyz (n): The value of the gyroscope, the value of the nth time after filtering alone.GRx (n), GRy (n), GRz (n): position vector fused to gyroscopeRAx (n), RAy (n), RAz (n): The nth-time vector of the measured value of the accelerometer;RESTX (n), Resty (n

Next we will use an example to describe how to access the accelerometer through layer-based accelerometer events. As shown in this example, there is a ball in the scene. When we place the mobile device horizontally, the screen is up, and then shake the mobile device left and right to change the position of the ball. Next let's take a look at the specific program code. First, let's take a look at the hellow