SU126628A1 - Linear acceleration sensor - Google Patents

Description

BASIC Auth. St. No. 121253 describes an acceleration sensor with a rotating cylinder of a damper and an inertial mass in the form of a shock absorber. To obtain a speed signal using such a sensor, the acceleration sensor signal must be integrated over time.

The difference between the sensor described is that the linear acceleration sensor is combined with a pneumatic integrator and, thus, provides the possibility of simultaneously receiving signals proportional to the acceleration and speed. This is achieved by the fact that the sensor has an air damper, the piston of which serves as the inertial mass, and the guide element is rotated. At the same time, the inertial mass is made in the form of two pistons, connected with one another by a leaf spring and interacting with brushes for the restraints, which are supported on guide rollers, which are also rotated.

The design of the sensor is shown in the drawing.

In the housing 1 a, bearings 2 and 3 have a rotating cylinder 4 inside which the massive piston 5 moves and connected with it through a plastic spring 6 fixed on racks 7, a light piston 8. The cylinder 4 has an air outflow opening, which is adjustable screw 9. The piston 5 has longitudinal holes for the free passage of air into the cavity between the pistons 5 and 8. These holes can also be used to create additional damping between the pistons 5 and 8. The cylinder 4 has at its end a sleeve with 10 gears, the pin is coupled via gear 11 with two cylindrical rollers 12, along which the limiter-brushes slide; 5, mounted on a rod 14 fixed in

piston oh. The rod 14 is connected to the pneumatic signal remover / 5. Brushes 13 ALLOW -grung the m-5 and S to rotate with the cylinder 4 and the operation of the sensor.

In the operating state of the drive engine, gears 16 are driven by Bo. The rotational motion of the cylinder 4. The pistons 5. and 8 are not immobilized, since they are prevented by limiter strings 13.

 Under the action of acceleration on the sensor, the massive piston 3, which is the inertial mass of the sensor, acts on the spring 6 and bends it. Due to the fact that the spring 6, unlike all existing structures, is attached to the non-ta sensor body, and on the piston from the damper, the force of the spring deflection is transmitted to the light piston 8, which begins to move, expelling air from the side of the damper. The deflection of the spring 6 is proportional to the acceleration, and the movement of the piston 8 damper is proportional to the speed. The movement of the rod 14 will be proportional to the sum of the acceleration signal and the speed signal of the moving object and can be converted by known methods to any kind of signal needed in each particular case.

Subject of Invention

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