Is the principle of automobile suspension the same as that of electronic level?

Body height sensor collects front and rear body height signals, steering wheel steering and angle sensor collects vehicle driving direction signals, throttle position sensor collects driver acceleration or deceleration signals, and vehicle speed sensor collects vehicle driving speed signals.

The sensor and the control switch compare, calculate and judge the driving state of the automobile → the →ECU receives all kinds of information → then sends control instructions to the actuator to make the actuator produce certain mechanical action → thus changing the height of the vehicle body, the stiffness of the air spring or the damping of the shock absorber.

The level gauge is mainly used to check the flatness, straightness and verticality of various machine tools and workpieces and the horizontal position of equipment installation. Especially when measuring verticality, the magnetic mechanical level can be adsorbed on the vertical working surface without manual support, which reduces the labor intensity and avoids the measurement error brought by human thermal radiation to the level.

Mechanical level mainly depends on leveling tube, which is made of glass. The inner wall of the leveling tube is a curved surface with a certain radius of curvature, and the tube is filled with liquid. When the working principle of the level is tilted, the bubbles in the level tube move to the rising end of the level, thus determining the position of the horizontal plane. The greater the radius of curvature of the inner wall of the leveling tube, the higher the resolution, and the smaller the radius of curvature, the lower the resolution, so the radius of curvature of the leveling tube determines the accuracy of the level.

Second, the principle of electronic level

Electronic level is mainly used to measure high-precision machine tools, and its sensitivity is very high, including inductive and capacitive. The principle of inductance type is that when the base of the level is inclined due to the inclination of the workpiece to be measured, the voltage of the induction coil changes due to the pendulum movement inside the level, and the inclination is measured and handled through the voltage change.

The principle of capacitive level measurement is that a circular pendulum is freely suspended on a thin wire, and the pendulum is suspended in a frictionless state under the influence of gravity. Both sides of the pendulum are equipped with electrodes, and the capacitance is equal when the gap is the same. If the level is affected by the workpiece to be measured, the capacitance will be different when the distance between the two gaps changes, resulting in the difference of angle.