IMU sensor functionality: what the innovative measurement technology can do
The abbreviation IMU is based on the English technical term Inertial Measurement Unit. Specifically, it is a combination of several inertial sensors that enable the tracking, analysis and control of movements. Inertial measurement units act as the central sensor unit in all inertial navigation systems.
In particular, the following inertial sensors are used in an IMU component:
- Accelerometers: These sensors measure the increase or decrease in speed.
- Rotational speed sensors: These sensors measure circular motion (rotation), whereas acceleration sensors detect linear motion.
Measurement with IMU sensor: examples of use
The precise measurement data from IMU sensors can be used to implement numerous functions. In principle, they are suitable for all applications in which motion data is important. A classic example is in navigation systems in vehicles, aircraft, ships or in mobile devices. In some models, an IMU sensor performs this task completely; in GPS devices, they serve as a supplement: in this case, the inertial measurement unit (IMU) steps in when the object is in an area with weak signals and no GPS signal can be received.
IMU sensors also play a central role in robotics. The inertial measurement units provide all the data needed to control motion sequences in real time. A wide range of inertial sensors can also be found in cars. This technology is used, for example, to trigger airbags.
Smartphones also contain IMU sensors. These components recognise, for example, when users change the angle of their device. Thanks to this measurement data, the screen changes from portrait to landscape format or vice versa.
Many more examples can be found in areas such as rocket and drone technology and digital photography. Find the right IMU sensor for your purpose here in your specialist shop!
Wide range of IMU sensor designs
The term ‘inertial measurement unit’ (IMU) is a generic term that describes a wide range of IMU sensors. There are two basic types: discrete and integrated sensors. In an integrated sensor, the electronic evaluation circuitry is implemented on a chip directly on the board.
The types of inertial sensors that the respective component has are particularly important. The features determine which tasks the IMU sensor can perform. The exact performance data for the measured values also deserve a look. For example, with an orientation sensor, the question arises as to how often it measures the current position. High-quality measuring units provide hundreds of position data per second.
Also check whether the respective product contains a microcontroller and which microcontroller it is compatible with. An IMU sensor is often based on Arduino or Raspberry Pi.
The perfect solution for your requirements: IMU sensors at EXP Tech
If you need innovative measurement sensors for your project, you've come to the right place. Buy an IMU sensor with an accelerometer and gyroscope that perfectly matches your requirements.
Frequently asked questions about IMU sensors
Here we answer some frequently asked questions about IMU sensors. If you have any further questions or would like a personal consultation, please write to us using our contact form.
How does an inertial measurement unit (IMU) work?
An IMU consists of several inertial sensors such as accelerometers and gyroscopes. These sensors measure motion in different ways and forward the data. The accelerometers detect linear motion, while the gyroscopes detect circular motion.
How do you choose the best IMU for a design?
The first step is to create a detailed requirements profile for your IMU sensor. The desired range of functions is very important, but other criteria include measurement accuracy, dimensions and compatibility with Arduino and other platforms.
How do you calibrate an inertial measurement unit?
With high-quality IMU sensors, you can rely on the manufacturer to calibrate them. Accordingly, they are ready for immediate use. However, it is necessary to check the measurement accuracy repeatedly, especially with complex components. Many users take advantage of the services of specialised providers who carry out the calibration with high-tech measurement technology in laboratories.
How do you use an IMU with Arduino?
It depends on the specific case. For example, some Arduino platforms have an integrated IMU, while in other circumstances developers create the design themselves.
