SU31687A1 - Device for measuring movement speed - Google Patents

Description

In the proposed device, the velocity measurement is performed by integrating accelerations into a mass freely moving with respect to a moving body, which, under the influence of acceleration, causes a change in electrical circuit parameters, accompanied by a change in electrical current proportional to the acceleration recorded by one of the known methods, for example, an electric meter. To do this, the microphone capsules, connected to the Whitston bridge along with resistances that balance them during the rest of the mass, with the inclusion of an electric meter in the bridge diagonal, touch the opposite sides of the mass.

In FIG. 1 shows a device for measuring the speed of movement; FIG. 2 is a device wiring diagram.

The free moving mass G (Fig. 1) lying on the horizontal plane A (to reduce friction between M and the plane of the support A, there are wheels or balls) is sandwiched between two microphone capsules 3 to 4. When the plane A moves in the direction of the arrow The current passed through the microphone capsule 3 will increase due to the increase in pressure on the capsule,

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and the current through the capsule 4 decreases due to a decrease in pressure.

If the caps are turned on according to the Whitston bridge scheme (Fig. 2), then at equilibrium, when the pressures on caps 3 and 4 are the same, i.e., when acceleration is absent when the plane A is restless or in uniform motion, the current through counter C turned on into the bridge diagonal, does not pass if the bridge is balanced by the resistances of TI and g. When the mass M is accelerated, an increase in pressure occurs on one of the caps and a decrease on the other. A current passes through the meter in one direction or another, depending on the acceleration direction. If the current passing through counter C is proportional to the pressure difference on the capsules 3 to 4 vi, therefore, proportional to acceleration, then the counter reading at each moment is proportional to the speed of movement of the plane A and the mass M. When the speed increases, the acceleration is positive and the counter adds the counter reading digit is increased). As the speed slows down, the acceleration is negative, and the meter reading value decreases.

With a uniform movement, the accelerations are canceled and the counter stops at a digit corresponding to the speed of uniform movement.

With proper performance of the device according to this principle, neither pushing nor rolling does not significantly reflect on the correctness of the readings of the measured speed. By known methods, the plane L can be held in a horizontal position, for example, using a gyroscope.

The subject matter of the invention.

A device for measuring the speed of movement by integrating accelerations of a mass freely moving relative to a moving body, characterized by the use of two microphone capsules 3 and 4, touching the opposite sides of the mass M in the body movement direction and included in the branches of the Whitston bridge together with the rest of the mass M resistances g and g, with which an electric meter is included in the diagonal of the bridge.

FIG.

FIG.

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G, g

four