Quartz accelerometers are used for:
Inertial navigation and guidance system
Navigation guidance systems for missiles, aircraft, ships, and chariots must have speed and position information. In the case of low requirements, people use airspeed meters, Mach number sensors, odometers, etc., but with the performance requirements of the weapon system. Improve, the above instruments can not meet the requirements. The line accelerometer can be installed in a moving object to directly measure its acceleration, and then obtain the speed and position. The measurement accuracy is high and the dynamic performance is good, which is much better than the airspeed meter and the odometer. Therefore, linear accelerometers are one of the most important applications for inertial navigation guidance systems.
Tilt measurement and leveling system
In the gravitational field, a line accelerometer can measure changes in gravitational acceleration. When the sensitive axis is perpendicular to the horizontal plane, the accelerometer indicates the unit of gravity acceleration; if the sensitive axis is tilted, the output is the product of the gravitational acceleration and the sinusoidal function of the tilt angle. Using this principle, it can be used as tilt measurement and leveling. For example, the fire control gun sight radar, air defense radar leveling; in addition, by measuring the lateral acceleration of the train, the car to control the tilt angle, so that it can still run at high speed on the curve.
The overload switch is used for the bullet spreading system of the mother missile. In this system, the motion acceleration of the female projectile at the expected height is calculated and set by the ballistics. The axial acceleration of the overloaded switch mounted on the bomb, when the preset acceleration is reached, the overload switch outputs a bullet to dissipate the control signal, ignites the projectile, and causes the bullet to be thrown from the female projectile. A number of bullets are like a net woven into a bomb, so that the target being hit has nowhere to hide. It is a powerful weapon against enemy positions and large equipment.
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