Calculate speed using accelerometer android My steps are: 1) After calibrat Feb 11, 2016 · I am using Sensor. Android Open Source Project sensors The Android Open Source Project (AOSP) provides three software-based motion sensors: a gravity sensor, a linear acceleration sensor, and a rotation vector sensor. Device coordinates Most Android sensors, including the accelerometer and gyroscope, use a standard 3-axis coordinate system defined relative to the device's screen when the device is held in its default orientation (portrait orientation, for a phone). Dec 8, 2023 · Fitness apps can use the accelerometer to count steps or detect movement types. info (this would have issues when on the tube/subway but not the end of the world) Or should I calculate it using the accelerometer? I can’t work out if I would be able to use the input. I am attempting to calculate displacement using the accelerometer on an Android device (Sensor. Nov 10, 2021 · Orientation of accelerometer: I don't know the exact problem you are trying to apply (I've worked with this on human gait and it was a nightmare), but even a slight tilt or a wobble during the motion of the accelerometer will cause the readings of the accelerometer to be pointing to a direction different from the global xyz. Speedometer apps tell you the current speed, average speed, over-speed alerts I intend to use that information to interact with a web app, so for example i would be able to move an image based on the phone movement. In the standard 3-axis coordinate system, the x -axis is horizontal and points to the right. How do you find displacement from accelerometer data? 1 Answer. Below are the equations used to calculated roll and pitch. This is the data in phone system of coordinate that probably 3 days ago · Likewise, a weather application might use a device's temperature sensor and humidity sensor to calculate and report the dewpoint, or a travel application might use the geomagnetic field sensor and accelerometer to report a compass bearing. Jun 13, 2018 · We’ll need to calculate linear acceleration and gravity using accelerometer. If any body done with this Project, please Share your Experience. TYPE_LINEAR_ACCELERATION). Instead, you'll need sampled geo coordinates, a method for calculating the distance between the geo coordinates, and the amount of time between the capture of those coordinates to compute a velocity. accelerometer I tried to calculate running speed sensor TYPE_LINEAR_ACCELEROMETER in Android, but the results I am getting is highly inaccurate. can i get any help? There is a relatively easy way to calculate distance using an accelerometer: Program it to track steps just like a pedometer, and then multiply the number of steps by the runner's stride length to get your distance total. How it works and how can we take advantage of it. So, the question is: What does Sensor. May 25, 2017 · I'm practically done, but I have one big issue (for me). If you know the initial velocity, like if the user tells you that . To calculate the angle, use the arctangent function (atan2) with the Y and X acceleration values, then convert the result from radians to degrees. I have read that the accelerometer is not very accurate. To start with, I Oct 26, 2020 · Dear, I am trying to find speed of a moving vehicle using accelerometer. These external signals can be calculated by an inertial system. Peak Jul 21, 2016 · Know What is Accelerometer and learn How to use Accelerometer in Unity. Nov 9, 2017 · Calculating Distance from a Cell Phone's Accelerometer - A failed, but fun attempt Our gym had a nifty Bluetooth enabled jump rope that would report how many jumps you made in a session. This left me thinking: could I approximate the same thing by using the sensors on my phone? Mar 22, 2016 · I am working on basic distance calculation using accelerometer by dragging object on a single axis for physics class in MATLAB and have problem with plotting data. As for the accuracy of the accelerometer, see Get velocity from 3DVector using accelerometer sensor. So, what I know: to get velocity there is this formula : v=u+at to get the general acceleration: √x^2+y^2+z^2 Measurement of speed and displacement using an accelerometer and gyroscope - IMU The device was created to measure training parameters in powerlifting. The following will explain in detail the calculation of objects and speeds from collected data and the IMU algorithm. 0f; void Update () { Vector3 dir = Vector3. An accelerometer measures the change in velocity over time, and displacement can be estimated from this measurement using double integration. I want to know how I can use accelerometer to determine distance traveled by Android device between points of interest. 5; Increase position accuracy and GPS distance calculation for the driver's app on Android devices with Kalman filter and accelerometer. The Android platform provides several sensors that let you monitor the motion of a device. ABSTRACT This paper treats the problem of estimating the longitudinal velocity of a braking vehicle using measurements from an accelerometer and wheel speed data from standard antilock braking Jul 23, 2025 · A Motion Sensor in an android device detects movement and acceleration, and can be used for many purposes, including navigation, security, and user interaction. I tried to calculate running speed sensor TYPE_LINEAR_ACCELEROMETER in Android, but the results I am getting is highly inaccurate. Sep 21, 2011 · With accelerometer you can calculate speed, with gyro you can get direction of the mobile device, but to calculate indoor position you also need to have direction of movement, so for this case you need to use magnetic sensor. driving a car without GPS or NET. Accelerometers are the stuff of rocket science—quite literally! Mounted in spacecraft, they're a handy way to measure not just changes in rocket speed but also apogee (when a Jul 16, 2024 · You can use speedometer apps on your Android smartphone to find out the speed of your car, bike, or other vehicle. To access the accelerometer we take the help of the sensors_plus package. Easy tutorial on How to use Accelerometer in Unity. get_accelerometer (). Jun 24, 2022 · I think that data is (x, y, z). It looks like I can either use GPS or Accelerometer to calculate these information. 6K subscribers Subscribe Jul 18, 2014 · In our example, we are going to disscuss about a motion – hardware based sensor, the Android Accelerometer sensor. But when I tested on an old android device it was WAY to fast to be useful. Learn what accelerometers measure, what the measurements mean, how to choose an accelerometer, and more. May 5, 2011 · By using a result of all the 3 forces of the 3 axes you can calculate the total acceleration per frame. anyone know how to do so? Getting position from an accelerometer on an Android phone Ask Question Asked 12 years, 8 months ago Modified 11 years, 5 months ago Jan 16, 2024 · Discover the basics of accelerometers with this guide. Using a phone accelerometer to create position-time data during a take off Dot Physics 51. It is also much easier to understand and use than a Kalman filter. How to calculate running speed using accelerometer sensor in Android? I tried to calculate running speed sensor TYPE_LINEAR_ACCELEROMETER in Android, but the results I am getting is highly inaccurate. You found the problem with this method. You can double integrate the acceleration vector over time to obtain the Mar 20, 2015 · In fact values returned by the accelerometer are negative if the acceleration is happening through the negative side of the axis. Thus, the integration of the acceleration values collected with the smartphone in the direction of motion would theoretically yield the speed. Source Code Record Accelerometer Data in ms Collecting and Plotting Accelerometer Data Using the Accelerometer on Android Blog Github Video Sensors RunnerUp Android Accelerometer/GPS Android Studio Calculate Running Speed Using Accelerometer Sensor Using Android Sensors in Your App Nov 12, 2025 · Accelerometer Reporting-mode: Continuous getDefaultSensor(SENSOR_TYPE_ACCELEROMETER) returns a non-wake-up sensor An accelerometer sensor reports the acceleration of the device along the three sensor axes. Always i could see the variation in position for the data X,Y,Z from Sensor is constant. And this is the problem. Navigation apps can use magnetometers as compasses. Accelerometer measures the acceleration applied to the device, including the force of gravity. So, what I know: to get velocity there is this formula : v=u+at to get the general acceleration: √x^2+y^2+z^2 Brilliant! Usually people suggest using Sensor. I used the exact code and came up with this, final double alpha = 0. Mar 12, 2014 · However, it is possible to use an accelerometer to determine the gait (for example, time between footsteps) and using other information, to estimate a walking or running speed. My algorithm using signal processing of Android’s accelerometer comprises of the following steps: Calculate raw magnitude of accelerometer signal Smooth signal using running average with window size of 20 To exclude gravity from magnitude value, net magnitude is calculated by subtracting average magnitude Derived from Mladenov et al [1]’s paper, peak detection is used for step count. I used below formula for calculating speed final double mph = (Math. Any example? Apparently, it is impossible to measure speed and distance using the accelerometer; it is prohibited by the fundamental physical principles: all phenomena in different reference system moving at uniform speeds go in the same way, so you cannot detect any difference between them from inside the system. But I have come to know that an accelerometer can also be use as speedometer. I intend to use that information to interact with a web app, so for example i would be able to move an image based on the phone movement. The Currently using an accelerometer and gyroscope to get the yaw, pitch, and roll (orientation) of the device, but do not know how to use that information to calculate speed, or if the device has collided with another object? Hi I am developing small android application in which i wanted to calculate user speed and distance covered by user using device accelerometer. May 14, 2024 · Learn how to use and monitor sensors provided by your device, with . Within our Accurate Compass, and Sun Position apps, we use the magnetometer and accelerometer within your device to calculate a compass bearing. By taking the coordinates of 2 positions in spacetime, you can calculate direction (x2-x1, y2-y1, z2-z1). I can get acceleration and gyro data with a good accuracy. I think I can use acceleration as; " x=a. In a previous project I used a ADXL345 Accelerometer from Analog Devices to calculate roll and pitch. What is an Accelerometer? Feb 15, 2018 · The accelerometer calculates the linear acceleration in each of the 3 axes (x, y, z); each axis has its own accelerometer, so that the data can be received individually. This way, you don't have problems with drift from the gyroscope and noise from the accelerometer. However, speed 18 | Measure vertical velocity with the MPU6050 accelerometer Carbon Aeronautics 17. This tutorial covers basic implementation, code examples, and practical applications. Sep 11, 2025 · Flutter plugin for accessing accelerometer, gyroscope, and magnetometer sensors. t^2 " but a is not a constant. time graphs and approximate the maximum velocity of the device. Dec 11, 2023 · Vector2 (Input. I have an Android phone with accelerometer and gyroscope which sent me data. See my previous answer to question Using accelerometer to calculate speeds or to another question GPS V. Jan 3, 2025 · Learn how to build a speedometer app using accelerometers. I found this link which explains how to get pitch and roll from accelerometer data. Mar 19, 2014 · Since the accelerometer is mandatory in every device, therefore older devices can run my game I want to be able to calculate this rate of change using the data retrieved from the accelerometer. What I did is: Learn how to implement speed measurement in Android apps using accelerometer data with step-by-step explanations and code examples. - This article discussed the theory behind accelerometer and gyroscope devices. Lots of physics formulas suggested by people to get speed but any one of then not giving correct speed compared to GPS. Refer to the following related resources: Sensors Motion Sensors Position Sensors Environment Sensors Jul 2, 2015 · I don't think you're going to be able to glean distance traveled over time using a motion sensor like the accelerometer. using UnityEngine; public class Example : MonoBehaviour { // Move object using accelerometer float speed = 10. One of the most commonly used motion sensors in Android devices is the Accelerometer, which detects changes in movement and orientation. And for the accelerometer you will use a tan2 function to determine Jul 25, 2012 · The most accurate results can be obtained by using both of them, through sensor fusion. Simple Kinematics !! I read couple of similar question on this forum and few blogs on web, though I am still confused,I am determined to calculate object displacement using accelerometer data. The availability of the software-based sensors is more variable because they often rely on one or more hardware sensors to derive their data. The kinetic theory tells that the integration of acceleration gives the speed of a vehicle. Jul 24, 2007 · accelerometer speed i using a adxl202 accelerometer and i want to calculate speed using the accerelation calculate from the accelerometer. This sensor can measure the acceleration force in m/s2 that is applied to a device on all three physical axes (x, y, and z), including the force of gravity. So we need two things to calculate speed which are GPS and Accelerometer. Here is my OnSensorChanged() method: Dec 20, 2017 · Let’s play with the Android accelerometer + Kotlin Taking a look into sensors in Android devices. umsome one told me that to use to v=u+at to estimate the velocity, so is it applicable? Sep 11, 2025 · Flutter plugin for accessing accelerometer, gyroscope, and magnetometer sensors. Sep 28, 2022 · The accelerometer is intended for the distance measurement of a mobile robot or platform in short duration. In this article, we will explore how to use the accelerometer to control a view within an Android Mar 3, 2014 · Hi Jose, I tried the Accelerometer example for calculating Speed. I'll explain what an accelerometer is and Mar 29, 2012 · I am trying to implement a fitness app that can keep track of the running speed and running distance in Android. TYPE_MAGNETIC_FIELD as well for this task, however you simplified the solution; and by the way accelerometer is the only sensor guaranteed to be present on Android. how to get sped of device. The problem is that I tried to calculate distance based on the accelerometer data but the results are really bad. I intented to derive the current speed from the acceleration/deceleration over time and so in the end calculate movements along the X, Y and Z-axis, but that didn't work out at all. I am using a simple filter to remove the noise from the accelerometer data: Nov 25, 2011 · I'm working on an android application which can calculate device's movement in 6 direction. Getting the result of all the 3 forces: sqrt(x*x+y*y+z*z); You are better of using the GPS for determining speed. With a high-pass filter we can filter out gravity acceleration values and subtract it from the raw sensor acceleration values: Sensor. round(100 * velocity / Nov 8, 2012 · I want to know current speed of car and make a passed path. Thank You. umsome one told me that to use to v=u+at to estimate the velocity, so is it applicable? Most Android powered devices have built-in sensors that measure motion, orientation, and various environmental conditions. Jul 2, 2009 · Hi, I would like to know if there are apps that shows the speed of movement by using the build in accelerometer? I know there are some apps that work like this in windows mobile, but what about android? Thanks Update: I have made one for this ABSTRACT This paper is focused on developing an algorithm to estimate vehicle speed from accelerometer data generated by an onboard smartphone. May 25, 2020 · Image Generated From Graphing Calculator So I had an idea to design an android application to measure lengths just by placing your phone at the two side and use the acceleration value to calculate displacement. GPS is not available all the time. Is there any acclerometer with you(ST) ? Please Suggest me one. Oct 3, 2012 · 4 I tried to measure the speed using Android's accelerometer sensor for an indoor-navigation project but that failed miserably. An object traveling at constant velocity doesn't experience any forces for the accelerometer to measure, so the accelerometer alone isn't enough to determine velocity -- you can only measure changes in velocity. If so, could you help me create a formula that could calculate it? I would like to know how to get the speed of a vehicle using your phone while seated in the vehicle using gps. TYPE_ACCELEROMETER and getting ax,ay,az (acceleration in x,y,z direction). Learn how to use the Android accelerometer to calculate velocity and position with detailed steps and relevant code snippets. Still best way to calculate speed is using GPS. Now I want to have the general acceleration at time t, because after that i want to calculate velocity. Dec 14, 2014 · I am trying to use my accelerometer on my mobile device (smart watch to be specific) to calculate a persons arm swing speed. You can monitor the following sensors: accelerometer, barometer, compass, shake, gyroscope, magnetometer, orientation. Jun 24, 2014 · It is a virtual sensor which combines data from accelerometer and gyro to calculate device position. But its not giving proper output (PositionX,PositionY) . Android Open Source Project Sensors The Android Open Source Project (AOSP) provides three software-based motion sensors: a gravity sensor, a linear acceleration sensor, and a rotation vector sensor. Here is my procedure and code, please suggest me what is the correct way to calculate from 3-axis accelerometer data and where my code goes wrong. Aug 16, 2018 · I am improving a project, however, I'm stucked in while trying to calculate the forward speed (velocity) from MPU-6050 (The kit I use is Nodemcu). NET MAUI. They investigate acceleration by collecting acceleration vs. Now that we have a basic understanding of accelerometers, let's address the central question: Can an accelerometer measure distance? Accelerometers are primarily designed to measure acceleration, not distance. The app uses the sensors_plus package to access accelerometer data. In most cases, using these sensors is a better choice than using the accelerometer and geomagnetic field sensor or the orientation sensor. Then the rope broke. Jun 15, 2011 · I know the accelerometer can be used to return the current acceleration along three axis in meters per second squared (m/s2). Mar 17, 2014 · I need to create an app that Calculates the device's velocity, with x/y/z speed. Oct 26, 2013 · I tried various examples for measuring speed using accelerometer, but it is not giving proper output. This tutorial covers the basics of accelerometer data, filtering techniques, and integrating with a mobile app. Discover how to accurately calculate your phone's movement speed using an accelerometer in this comprehensive guide. TYPE_ACCELEROMETER -> { Sep 4, 2023 · This motion generates an electrical signal that the accelerometer interprets as acceleration. Dec 31, 2024 · Learn how to use the accelerometer sensor in MIT App Inventor 2 to create interactive mobile applications. If you know the initial speed ( for example 0m/s), then you calculate the speed as v = at + inital speed. Apr 25, 2022 · Hi, is there any way to calculate speed of a device from ax, ay, az? I'd like to get a forward movement value while e. About An android app that visualizes device orientation using accelerometer and gyroscope data. How do you calculate speeds? To work out speed, divide the distance of the journey by the time it took to travel, so speed = distance divided by time. Android app developers make use of these sensors to monitor three-dimensional device movement or positioning. when we move the device the accelerometer Jul 10, 2013 · The double integration method is really the only way to get the information you are looking for using only an accelerometer. AR apps can use sensors to accurately align virtual objects with the real world. time data using the accelerometer of a sliding Android device. I had been using iPhones as test devices (an iPhone 11 and an iPhone 13) and a speed of 30 worked well. However, when the test item is not accelerating or decelerating (constant speed), its velocity is static. Jul 26, 2019 · I have used accelerometer values by inputting them into some formulas on the internet (those arctangent formulas, which everybody uses but nobody explains well) to get the roll and pitch values. g. Jul 2, 2018 · I am using the Accelerometer in an Android Device to track and detect certain motions, using only one axis as the motions are linear along that axis. I thought that it should be integrated, but according to the information that I have received, it seems tha Mar 13, 2019 · This paper is focused on developing an algorithm to estimate vehicle speed from accelerometer data generated by an onboard smartphone. So I have 3-axis acceleration from my android device. My idea is using device's accelerometer and gyroscope, like this pipeline I wanted to know that whether accelerom Nov 10, 2025 · Use Sensor Manager to populate steps data in a mobile app, as described in this guide. Apparently, it is impossible to measure speed and distance using the accelerometer; it is prohibited by the fundamental physical principles: all phenomena in different reference system moving at uniform speeds go in the same way, so you cannot detect any difference between them from inside the system. Then they use the data to create velocity vs. You will calculate the angle from the gyroscope using an integral. The measured acceleration includes both the physical acceleration (change of velocity) and the gravity. Jan 23, 2010 · i want to know how to calculate steps taken using the Accelerometer. If you want to track the user indoor, see what you can actually Android : Using accelerometer, gyroscope and compass to calculate device's movement in 3D worldTo Access My Live Chat Page, On Google, Search for "hows tech Oct 22, 2011 · Changing Sensor type to TYPE_ACCELEROMETER, calibrating and using same formula to calculate speed - I get good results, much closer to reality. In this specific example, it uses the accelerometer events using _accelerometerSubscription. TYPE_LINEAR_ACCELERATION really show? Where am I wrong, or is something wrong with Sensor. For more information about how to design and manage an exercise app UI, refer to Build a basic fitness app. zero; // we assume that device is held parallel to the ground // and Home button is in the right hand // remap device acceleration axis to game coordinates: // 1) XY plane of the device is mapped onto XZ plane // 2) rotated 90 degrees around Y Jul 24, 2007 · accelerometer speed i using a adxl202 accelerometer and i want to calculate speed using the accerelation calculate from the accelerometer. TYPE_LINEAR_ACCELERATION implementation? I used Samsung Nexus S phone. It shows a simple Kalman filter alternative, that allows you to combin 10 I am developing an android application to calculate position based on Sensor's Data Accelerometer --> Calculate Linear Acceleration Magnetometer + Accelerometer --> Direction of movement The initial position will be taken from GPS (Latitude + Longitude). Nov 30, 2016 · An easy way to combine accelerometer and gyroscope data is by the use of a complementary filter. Jul 23, 2025 · In this article, we are going to make an app that will fetch the data from the Accelerometer sensor and display it. accelerometer to calculate distance. Nov 3, 2016 · Here is my procedure and code, please suggest me what is the correct way to calculate from 3-axis accelerometer data and where my code goes wrong. Gaming applications can use gyroscope and accelerometer sensors to control gameplay, creating a more immersive experience. 5K subscribers 500 Dec 29, 2009 · A Guide To using IMU (Accelerometer and Gyroscope Devices) in Embedded Applications. So, I tried using www. I am then Mar 3, 2014 · In this tutorial, we are going to explore how to use the accelerometer, one of the many hardware sensors of modern smartphones, in an Android application. Photo by courtesy of NASA Johnson Space Center (NASA-JSC). Jan 4, 2024 · To use the IMU (Inertial Measurement Unit) algorithm to calculate speed and direction, data from the accelerometer and gyroscope need to be combined. acceleration to create a speedometer, or if this would have issues when the phone is rotated. For speed and acceleration you should take into account the delta Time that has passed. Peak Jan 31, 2025 · What are accelerometers used for? Photo: The appliance of rocket science? An accelerometer developed by Honeywell in the 1980s for use on the space shuttle. S. The distance traveled is obtained by double integration of the sensor signal with time. 3 days ago · In most cases, using these sensors is a better choice than using the accelerometer and geomagnetic field sensor or the orientation sensor. The kinetic theory tells that the integration of acceleration May 28, 2016 · Should I calculate the speed using the GPS location. Calculated average acceleration is always positive value, so it keeps on increasing. Jul 9, 2018 · Exploring Acceleration and the Accelerometer with Google's Science Journal App - part 5 in a series of tutorials to help students learn to use the app for science projects. My steps are: 1) After calibrat May 25, 2017 · I'm practically done, but I have one big issue (for me). So it takes best of the two worlds – speed from the gyro, and no gyro drift. Apr 14, 2023 · I want to calculate the speed with the help of an acceleration sensor, such as a ADXL345. How can I calculate the total movement?? Jan 4, 2015 · Hi how calculate speed using accelerometer. Oct 20, 2011 · I was looking into implementing an Inertial Navigation System for an Android phone, which I realise is hard given the accelerometer accuracy, and constant fluctuation of readings. y * speed I am not sure how to set the speed so that it works on different devices. Jan 5, 2014 · How to properly calculate linear acceleration using AcceleroMeter in Android Asked 11 years, 10 months ago Modified 8 years, 7 months ago Viewed 19k times You need the initial speed, and then you can measure how the speed change. Most Android-powered devices have an accelerometer, and many now include a gyroscope. But both have their limitations. So what I did I take samples of acceleration in time frame like 1 min. The gravity, linear acceleration, rotation vector, significant motion, step counter, and step detector sensors are either hardware-based or software-based. Now based on Sensor's Readings i need to calculate the new position of the Smartphone: This might be a stupid question but considering that you have to my knowledge an accurate accelerometer in your phone handset, surely if you give it some calibration to a speed of zero, any subsequent acceleration detected can be used to calculate a speed? Simplified case, I calibrate my phone and tell it that I'm not moving, it detects 1ms -2 acceleration for one second. In the second lesson, students are given an app for an Android device, which measures acceleration. Build your own speed tracking app today! I want to make an android calculator which can calculate speed of a vehicle by using mobile sensors (accelerometer or GPS) i am interested to calculate it by using accelerometer instead of GPS is it You need the initial speed, and then you can measure how the speed change. x * speed, -Input. Android application to get X, Y & Z Direction through Accelerometer and Create Accelerometer Sensor Event using Kotlin Programming Language. Then by using the difference per frame you can calculate how much the user has accelerated. Perfect for users needing short-distance 3 days ago · The accelerometer and gyroscope sensors are always hardware-based. The data returned from the accelerometer is in $m/s^2$. Jul 16, 2016 · I need to calculate Speed with which the user is moving. Actually i calculate acceleration and use this code to count step length = sqrt (x * x + y * y + z * z); if (length>=2) { In most cases, using these sensors is a better choice than using the accelerometer and geomagnetic field sensor or the orientation sensor. Apr 10, 2017 · I want to implement a functionality to calculate speed of moving object, but I don't want to using GPS (CLLocation). cuxrsj tsiqmkk wfcebx wsoss bbkiq uwymtsm ekxje gdilwbw xopkxvux xawwokh hmphj ibluf mwvfjm ezb todr