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Piezoelectric measuring devices are widely used today in the laboratory, on the production floor, and as original equipment for measuring and recording dynamic changes in mechanical variables including shock and vibration. Some accelerometers have built-in electronics to amplify the signal before transmitting it to the recording device.
Herman Digital Trainer uses accelerometers to measure strike force in physical training. [21] [22] It has been suggested to build football helmets with accelerometers in order to measure the impact of head collisions. [23] Accelerometers have been used to calculate gait parameters, such as stance and swing phase. This kind of sensor can be used ...
A piezoelectric sensor is a device that uses the piezoelectric effect to measure changes in pressure, acceleration, temperature, strain, or force by converting them to an electrical charge. The prefix piezo- is Greek for 'press' or 'squeeze'.
Integrated Electronics Piezo-Electric (IEPE) characterises a technical standard for piezoelectric sensors which contain built-in impedance conversion electronics. IEPE sensors are used to measure acceleration, force or pressure. Measurement microphones also apply the IEPE standard. Other proprietary names for the same principle are ICP, CCLD ...
Magnetic sensors, commonly referred to as compasses, detect magnetic fields and measure their absolute position relative to Earth's magnetic north and nearby magnetic materials. Information from magnetic sensors can also be used to correct errors from other sensors such as accelerometers.
The accuracy of the inertial sensors inside a modern inertial measurement unit (IMU) has a more complex impact on the performance of an inertial navigation system (INS). [16] Gyroscope and accelerometer sensor behavior is often represented by a model based on the following errors, assuming they have the proper measurement range and bandwidth: [17]
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