MMA1200D

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Motion sensors, like accelerometers, are essential devices to measure and characterize the motion of objects. The MMA1200D accelerometer is a popular motion sensor due to its enhanced performance and accuracy. This article will discuss the application field and working principle of the MMA1200D.

Application Field of MMA1200D

The MMA1200D accelerometer is specifically designed for acceleration, speed and distance related measuring, and can be used in many applications from automotive systems to industrial automation. In the automotive industry, it can be used to measure road curvature and tilt angle, as well as the vibration and shock of vehicles. In industrial automation, it can be used to control material handling systems and track motion of production lines. Additionally, MMA1200D can be used in research applications to measure vibration of the ground to detect earthquakes or structural damage, and in non-destructive testing to measure waveforms and strain response.

Working Principle of MMA1200D

The MMA1200D accelerometer is based on a piezoelectric quartz crystal chip, which is used to sense acceleration. The operating principle of this type of accelerometer is based on the piezoelectric effect. When an external mechanical force is applied to a piezoelectric crystal, it will generate an electric charge that can be measured as an electrical signal. The voltage of this signal is proportional to the displacement of the crystal. When a quasi-static acceleration is applied to the MEMS sensor, this electric charge acts as a force on the suspended crystal, causing it to move. This movement is proportional to the acceleration, and can be used to measure acceleration.

To measure the acceleration more accurately, the sensor uses a combination of MEMS-mechanical gyroscopes and force-feedback control. The MEMS gyroscopes are used to measure the displacement of the suspended crystal, while the force-feedback control system is used to apply corrective forces to the crystal to keep it centered. This ensures that the crystal is not subjected to excessive forces and maintains its position, which improves the accuracy of the measurement.

In addition to measuring acceleration, the MMA1200D can be used to measure vibration, shock, and other forms of motion. It does this by using an accelerometer element to detect the motion, and then using signal conditioning circuitry to convert the electric charge generated by the MEMS sensor into a signal that can be read by a computer. This signal conditioning circuitry is often built into the accelerometer module and can be customized to meet the needs of the application.

Conclusion

The MMA1200D is a widely used accelerometer due to its enhanced performance and accuracy. It is used in many fields from automotive systems to industrial automation and in research applications. The operating principle of this type of accelerometer is based on the piezoelectric effect, with MEMS-mechanical gyroscopes and force-feedback control for improved accuracy. Additionally, the signal conditioning circuitry makes it possible to measure vibrations and other forms of motion.

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