SU437140A1 - Software switching device - Google Patents

Description

I

The invention relates to the field of electrical engineering and is intended for switching electrical circuits in accordance with a program defined by a punched card.

A software switching device is known that contains a movable and fixed base, a punch card placed between them, movable reading elements in contact with it, reed switches and sources of magnetizing force.

The proposed device differs from the known high reliability of processing a given switching program and reduced dimensions.

For this purpose, the reed switches of the switching elements are placed in spring-loaded capsules made of non-magnetic material, equipped with restrictive ring shoulders, and the sources of magnetizing force are arranged in pairs on opposite sides of the punched card, their like poles are connected by ferromagnetic plates with holes for placing the capsules.

FIG. 1 shows the proposed device, a cross section; in fig. 2 is the same; the section along A-A in FIG. one.

The software switching device consists of a fixed base 1 and a movable base (board) 2 fixed on axis 3. Ferromagnetic plates 4 and 5 are rigidly connected to base 1, and the bottom plates 5 are located along the rows or columns of the punched card 6. plate 4 and a movable base 2. The dimensions of the holes of the punched card correspond to the holes in the plates 4 and 5. Between the plates 4 and 5, on their edges, cores 7 with coils 8 are installed, forming electromagnets. In the holes of the plates 4 and 5, reading elements are installed, which are reed switches 9, fixedly mounted in capsules 10. Capsules 10 are provided with annular restricting shoulders and are pressed against the punched card 6 by springs 11.

Plates 5 can be structurally combined into a single plate, the same as plate 4. In turn, plate 4 can be replaced by separate plates

by rows, or punch card columns 6.

Plates 4 and 5 and the cores 7 are made of a magnet of a soft material, the remaining parts are made of a nonmagnetic material. Instead of electromagnets, permanent magnets can be used.

The wheel 8 is connected to a voltage source so that the magnetomotive forces occurring in the cores 7 (ppm) Iwi, Iw2 are the same in direction

When controlling the reed switches 9, the coils 8 are turned on in rows or columns only for the corresponding plate 5.

When programming the activation of any of the reed switches 9 on the punch card 6, a hole is punched.

M. d. Iwi, Iw2 create a magnetic field between plates 4 and 5. Ppm value taking into account the smallest tension, the floor between the plates 4 and 5 and the minimum sensitivity of the reed switches 9.

For the implementation of the specified program of switching, the punched card 6 is installed under the movable base 2. The reed switches, facing the holes in the punched card 6, under the action of the springs 11 rise up to the stop of the annular restrictive shoulder in the plate 5. the capsules of which passed through the holes of the punch card 6 are between plates 4 and 5, which leads to the activation of reed switches. Working gaps of reed switches, on the contrary

the capsules of which had no holes, remain outside the gap between plates 4 and 5, and therefore these reed switches remain open.

Subject invention

A software switching device containing a movable and a fixed base, a punch card placed between them,

contacting mobile readout elements, switching elements in the form of reed switches and sources of magnetizing force, characterized in that, in order to increase reliability and reduce the size of the device, the switching elements reed-switches are placed in spring-loaded capsules of non-magnetic material, equipped with restrictive ring shoulders, sources of magnetizing force pairwise arranged

on opposite sides of the punch cards, and their poles of the same name are connected by ferromagnetic plates with holes for accommodating capsules.