How to obtain a stable impact acceleration signal is a research; the key to the sensor is also the key to ensure that the sensor can accurately obtain the impact signal. The magnetoelectric acceleration sensor adopts the drop weight impact test device to adjust and correct its induction sensitivity. When the hammer head is released, the acceleration or magnetoelectric sensor installed on the hammer head will feel the impact acceleration when it collides with the rubber surface. Different drop heights correspond to different accelerations; adjusting the thickness of the rubber can change the signal width; adjusting the height of the drop weight can change the signal amplitude.
The magnetoelectric sensor not only has a low error rate of the electronic discriminant circuit, but also has high reliability and accuracy of the induced collision signal; it can also adjust the width of its induction range through the hammer settling experiment to meet the reproduction of the pulse generated by the collision of the car, so it can also be installed on any part of the body. There is also its simple design and low price, which is no longer a prohibitive luxury for the vast majority of car users.