The correlation between the Accelerometer and the Fitness Tracker is that they are both electronic devices that measure movement. The Accelerometer measures linear acceleration, which is defined as force applied to an object divided by its mass. This measurement is typically used to produce data for use in navigation systems. On the other hand, the Fitness Tracker uses a 3-axis accelerometer to detect motion so it can calculate how many steps you have taken or calories burned during your workout session.

Accelerometer and Its Roleplay – How the Steps Are Being Measured in the Fitness Trackers?

An accelerometer device helps the fitness tracker protect the user from falling due to an uneven surface or even from sudden changes in direction without warning. In addition to this, it allows for very accurate calorie consumption and distance traveled during training sessions as it calculates these metrics as speed and distance traveled during one’s route rather than elapsed time and distance traveled. Most importantly, however, it is used in the health tracking industry to record daily activity levels.

Types of Accelerometers and How They Work

Before learning about the type of accelerometer, we should know what accelerometer device is. First up, from a scientific perspective, an accelerometer chip is any device that measures the acceleration of motion. This includes devices that measure the rate at which an object changes speed or velocity. In addition to devices that measure acceleration indirectly by measuring, such as through rotation, they also include things like seismometers.

Accelerometers are used to measure motion in many areas of science, industry, and engineering. But first, let’s talk about the three common types of accelerometers. There are three different main types of accelerometers:

1. Piezoelectric,

2. Triaxial accelerometer,

3. Piezoresistance accelerometer.

Each accelerometer type is suited for measuring other things, so you will need to know what kind you’re working with before making any decisions on what types of measurements you would like to make with it. Different types of accelerometers can be found in a wide range of various applications, from consumer electronics to aerospace to medical equipment. You can even find them in your cell phone, gaming console, or other electronic devices to measure tilt and shake. These little fellows are all around us; everywhere you go, you can find them very quickly. Now that you will learn about them, you can spot them too. If you are going to buy them, this article can help you a lot with the knowledge.

What Is the Function of the Accelerometer?

Before entering the world of accelerometers, let’s talk about how they basically work. An accelerometer is a device that measures acceleration. In the most basic sense, it does this by applying a force to the object being measured and measuring how much it moves as a result. Accelerometers do this by sensing motion by using a motion sensor or vibration sensor and another different type of sensor. In other words, they measure acceleration indirectly by measuring motion. To convert a signal into a measurement of acceleration, an accelerometer uses what is called a transducer, which translates one type of motion into another. 

So now you all are ready to talk about the types of accelerometers. As we have mentioned above there are mainly three types of accelerometers. Let’s have a look at them in detail. 

Piezoelectric Accelerometer

A piezoelectric accelerometer is a device that measures acceleration by measuring the motion of crystal lattice structures filled with an electric charge. Piezoelectric accelerometers work on the same principles as piezoelectric crystals found in some loudspeakers and microphones. The type of application where you can use a piezoelectric accelerometer is limited because it only measures one axis of motion–it can tell you how much an object is moving along one axis using a motion sensor, but not anything else. For example, if the car you were driving was equipped with a piezoelectric accelerometer, it could tell you that the vehicle was speeding up or slowing down because of an acceleration sensor, but it couldn’t tell you which direction you were in in turn. A piezoelectric accelerometer measures the velocity of a solid body through a direct connection to a mechanical oscillator. Accelerations or decelerations forces change the potential difference across the piezoelectric material, and this is measured with an amplifier. The digital output signal is proportional to velocity.

Piezoresistance Accelerometer

Piezoresistance accelerometer is since different materials have different electrical resistances. An electric potential, being generated across the material, displaces charges into the charges leaving traps in the material. These traps are resonators, and they produce a unique voltage signal when they are excited by stress forces. A unique feature of piezoresistors is that their resonances can be used to measure acceleration or deceleration force. These accelerometers are used to measure changes in mechanical forces, either acceleration or deceleration. The piezoresistors are connected in series to the circuits that provide the excitation force, and these measurements are taken when an electric signal is applied. Piezoresistors contain traps (which include free electrons) within their environments due to the molecular structure of the materials they are made of. Materials with poor piezoresistivity have fewer traps but have more charge carriers on their surfaces. On the other hand, materials with high piezoresistivity have fewer charge carriers on their surfaces but have more traps. Piezoresistivity is measured in units of Ohms per volt.

Triaxial Accelerometer

Despite its name, triaxial accelerometers are not made up of three sensors but of four components. A strain gauge accelerometer is used to detecting the change in the beam’s length due to acceleration or deceleration force. That energy is then used to power a Hall-effect sensor that measures the beam’s angle with respect to the plane of motion. The output is used to power a second Hall-effect sensor, which measures the change in velocity of the beam due to acceleration or deceleration. The outcome of that sensor is then used to power a third Hall-effect sensor, which determines the change in the beam’s orientation with respect to the plane of motion. Accelerometer data is recorded in datasheet.GIF format, using an open-source graphics application. When saved to disk, the file becomes. MPEG format. The output of the accelerometer sensor can be used in low-power flight control systems for monitoring motion during flight. This accelerometer is specifically a triaxial accelerometer. The basic idea behind it is that the y-component of force is measured along the x-axis, and the z-axis of force is measured along the y-axis. These forces are used to determine the acceleration due to gravity due to gravitational force, which is reckoned in g’s. How do these accelerometers accomplish this? The first accelerometer that you must remember is a strain gauge.

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Piezoresistivity and strain gauge accelerometers can be used to measure small forces and motions with various frequency ranges, but they are limited by the accuracy of the measurements. They do not accurately do vibration measurement and other types of acceleration or deceleration, such as changes in rotation or changes in position. Piezoresistive accelerometers work best when measuring tiny forces, such as acceleration due to gravity which is called free-fall, using a gravity sensor, while strain-gage accelerometers work well for measuring slight changes in pressure. These are the kind of accelerometers that help you in different aspects of your life and make it way easier than you can think using different types of sensor technology.