accelerometer in mobiles

Android open-source project Sensors The android open-source project (aosp) provides three software-based mobile sensors: gravity sensor, linear acceleration sensor, and rotation vector sensor. These three sensors are updated in android4.0 and both use Gyroscope (except for other sensors) to improve stability and performance. If you want to try these sensors, you can identify them by using the getvendor () method and getversion () method (vendor: Google Inc; version: 3 ). It is necessary to ident

There are two methods for the current program to detect mobile phone shaking. The first method is to override the gesture method in the UIResponder class (which can be simulated by a simulator ), the second method is to use Accelerometer to check whether the mobile phone is shaking (you can only test it on a real machine ). Method 1: It takes only three steps: let the current ViewController support shaking gestures, make the current View the first res

Demo Example:Package it.com.cc;Import Java.util.regex.Matcher;Import Java.util.regex.Pattern;Import android.app.Activity;Import Android.os.Bundle;public class Demo4activity extends Activity {@Overridepublic void OnCreate (Bundle savedinstancestate) {Super.oncreate (savedinstancestate);Setcontentview (R.layout.main);Boolean isphone = Ismobileno ("1684565463453");Boolean isemail = Isemail ("[email protected]");Boolean isnumber = IsNumeric ("564465");System.out.println ("isnumeric=" + isnumber + "i

create a new document and set the document _ID automatically for the returned sequence value: >db.products. Insert ({ "_id": Getnextsequencevalue ("ProductID"), "Product_Name": "Apple iPhone", "category": "Mobiles" }) >db.products. Insert ({ "_id": Getnextsequencevalue ("ProductID"), "Product_Name": "Samsung S3", "category": "Mobiles "}) As you can see, we use the Getnextsequencevalue fu

Recently a quick look at the sensors of the Android system. The more commonly used is the accelerometer accelerometer, which can be used to achieve "shake a shake."At first, the accelerometer is the name itself to understand, that is, the measurement of acceleration, that is, if the phone is still, the accelerometer sh

Study on the feasibility of gravity induction gameA. Gravity sensing components in mobile phonesMany people know that the mobile phone has the function of gravity sensor, but what is gravity sensor is not very understanding. Gravity sensor is not a camera, people know how many pixels, not touch screen, people know whether it is capacitive screen or resistive screen, gravity sensor like shrouded in the fog of the valley, it is difficult to explore. The gravity sensing components are described in

This year is to do is photoelectric upright, the program is mainly referred to the official website above the Tsinghua program. The principle of what is not specific research, the scheme and the paper is very detailed.There are three main parts: 1 angle control, 2 speed control, 3 direction control. It also uses the complementary filter to calculate the angle and use the PID algorithm to control.The first is the angle control, using the gyroscope integral to calculate the angle, and because the

Cocos2DStudy NotesUIAccelerometerThe accelerator is the content to be introduced in this article.UIAccelerometerAcceleration is counted as an instance. Let's see the content.UIAccelerometerThe accelerator is used to detect the acceleration of the iphone on the x. y. Z axis. To obtain such calls: UIAccelerometer*accelerometer=[UIAccelerometersharedAccelerometer]; At the same time, you need to set its delegate. UIAccelerometer*

Now wireless control has become the mainstream of the field of electronic science, this time to teach you to do a mainstream mainstream-wireless control of the car, first to show you the final product demo Video:://v.youku.com/v_show/id_xmty2mzazndazng==.html?spm=a2h0k.8191407.0.0from=s1.8-1-1.2first, introduce the materials you need to use.:TPYBoardv102 Development Board two piecesCar Chassis OneLora Wireless module two piecesRechargeable Treasure One90,143 Pole Tube Two (why do you use it, bac

Well, thanks to the recent development requirements for smart hardware, so the recent days to share the blog is roughly linked to intelligent hardware, like a piece of Bluetooth sharing, I believe that many readers have seen, then today I bring you the knowledge of the Android sensor introduction and use of methods, for the use of sensors , different versions of the Android phone may have larger hardware differences, but same, this article will be through the most common sensors, the infiltratio

*/public static Boolean checkemail (string email) {Boolean flag = false; try {string check = "^ ([a-z0-9A-Z] + [-| \.]?) + [A-z0-9A-Z] @ ([a-z0-9A-Z] + (-[a-z0-9A-Z] + )? \\.) + [A-Za-Z] {2,} $ "; pattern RegEx = pattern. compile (check); matcher = RegEx. matcher (email); flag = matcher. matches ();} catch (exception e) {flag = false;} return flag ;} /*** verify the mobile phone number ** @ Param mobiles * @ return [0-9] {5, 9} */public static Boolea

(Secretkey)); $Obj. ADD ("Mobiles",Newjvalue (mobiles));Panax NotoginsengObj. ADD ("content",Newjvalue (content)); -Obj. ADD (" Sign",NewJvalue (SIGN1)); theObj. ADD ("addserial",NewJvalue (addserial)); + varMac = Ecname + apId + secretkey + mobiles + content + sign1 +addserial; A varMAC1 = UserMd5 (MAC);//to perform 32-bit MD5 encryption the varLength =Mac1. Le

A. Basic Concepts Autopilot: The control system of the aircraft, wherein the hardware contains the sensor part IMU and the control part of the MCU, the software part contains the control algorithm. tilt:pitch, rotate around the y axis of the coordinate system and imagine the usual plane Course:Yaw, rotating around the z axis of the coordinate system, imagine the usual plane roll, rotate around the x-axis of the coordinate system, imagine the usual plane Gyroscope: sensing angular ve

Event distribution mechanismRespect for the original: http://cn.cocos2d-x.org/tutorial/show?id=2154What is the event distribution mechanismEventdispatch is a mechanism for responding to user events.Basic concepts: Event listeners encapsulate the code for event handling; The event Scheduler notifies listeners of user events; The event object contains information about the event. 5 Types of event listenersEventListenerTouch-Respond to touch eventsEventListenerKeyboard-Respond

11 sensors in Android In the Android2.3 gingerbread system, google provides 11 sensors for the application layer.? 1234567891011 # Define SENSOR_TYPE_ACCELEROMETER 1 // Acceleration# Define SENSOR_TYPE_MAGNETIC_FIELD 2 // magnetic# Define SENSOR_TYPE_ORIENTATION 3 // direction# Define SENSOR_TYPE_GYROSCOPE 4 // Gyroscope# Define SENSOR_TYPE_LIGHT 5 // light sensing# Define SENSOR_TYPE_PRESSURE 6 // pressure# Define SENSOR_TYPE_TEMPERATURE 7 // Temperature# Define SENSOR_TYPE_PROXIMIT

Pedometer as an algorithm function module, this should be separated from the business module, decoupling. This can also be more focused on the upgrade of the algorithm. Let me briefly describe the implementation principle of the pedometer algorithm, and give us some inspiration.1. AlgorithmsFor all pedometer, the first step was to use an accelerometer (Accelerometer sensor) to measure the number of steps, a

in Sensor. Refer to some TYPE values defined in Sensor. java below: /*** Get the constant of the accelerometer */public static final int TYPE_ACCELEROMETER = 1;/*** get the constant of the magnetic sensor */public static final int TYPE_FIELD = 2; /*** get the constant of the direction sensor, out of date */@ Deprecated public static final int TYPE_ORIENTATION = 3; /*** get the constant of the gyroscope sensor */public static final int TYPE_GYROSCOPE