SU377847A1 - DEVICE OF TRANSFORMATION OF ANGULAR AND LINEAR MOVEMENTS IN THE SEQUENCE OF ELECTRIC - Google Patents

Description

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The proposed device relates to the field of automation and computational technology, and is intended to convert non-monotonic angular 1I linear displacements into a sequence of electrical pulses. It can be used in various automation devices, for example, in control systems of multicomloent metering devices for converting the angle of rotation of a perforated disk into a sequence of electrical impulses when calculating the weight of the material being metered by a counting unit.

The non-monotonous movement of the perforated disk of the weighing head results from the uneven arrival of the components in the bun: ker of the weighing dispenser. At the same time, impulses of force are applied to the moving system of weights, which cause oscillations of the moving system, therefore, when the components enter the weight metering hopper, the perfo disc simultaneously performs rotational and oscillatory movements.

Given this nature of the movement of the disc, it is not possible to convert its angular movement into a sequence of electrical pulses using a single sensor and media placed around the disk’s circumference, since the same medium can be repeated several times.

cross the sensor reading line, and an excess of pulses will be sent to the computing device.

The use of damping reduces the amplitude of oscillations of the moving system, but cannot completely eliminate them.

A device for converting angular and linear movements into electrical signals, the principle of action of which is based, is known.

on the application of the cyclic code Gre.

In this device, the disk is divided into sectors, and each sector is encoded in a cyclic Gre code. The sensor system reads this code and sends the appropriate combination of signals to the descrambler with a memory device. Each code combination that crossed the sensor reading line is memorized, and when the similar code combination reappears at the input of the descrambler, the signal at its output does not appear.

The known device is very complex. The control system of this device contains a large number of logical elements and is not sufficiently reliable.

The proposed device is characterized in that the perforations on the disk are arranged along a sawtooth curve with a distance between adjacent vertices, a large

the maximum amplitude of oscillations of the disk, and the readout unit is made in the form of a system of sensors placed at the corresponding levels of the saw-tooth curve.

The design of the device is shown in the drawing.

The device consists of a perfo disc 1, a block of emitters 2 and a read unit 3. The perforation holes are placed on the disk through a predetermined angular division, but at different levels relative to each other in the radial direction, and in the radial direction through a certain number of divisions the holes are located starting from zero level, i.e., along a saw-tooth curve with a period Pf, where n is the number of perforations in one period, f is the price of the angular division.

The number of sensors in the reader is set equal to the number of holes in one period, and they are located radially in a plane perpendicular to the plane of the disk.

Reading the rotation angle of the perfo-disk is as follows.

If the perfo disc is in the initial position, then the zero-emitter emitter through the zero-set perforation acts on the zero-setting sensor, which switches the memory element of the reading device to a position that only allows signals from the first level sensor to pass. Signals from other levels of sensors are blocked. When the perfodiok is rotated one angular division forward, as soon as the perforation is between the sensor and the radiator, the signal from the first level sensor passes to the input of the reader, where it is converted into a single emulsion. At the same time, a signal from a first level sensor prepares a circuit for passing a signal from a second level sensor and, with memory elements, blocks signals from other levels of sensors. Turning the perfo disc to the second angular division passes

a signal from a second level sensor, which is converted into a single pulse and prepares a circuit for passing a signal from a third level sensor; with signals from

sensors of other levels are blocked. Later on, when turning the perfo disc, the processes described above are repeated.

Thus, the signals from the sensors of each previous level are converted into

single pulses and using memory elements prepare a circuit for passing signals from sensors of subsequent levels, simultaneously blocking signals from sensors of other levels, including their own level.

If during the rotation of the disk an oscillating movement occurs and it turns back several angular divisions and then the same number of divisions forward, then an excess number of pulses will not be formed, the next pulse at the output of the reading device will be formed when the perfodisc is rotated by one angular division relative to reference position.

The proposed device makes it possible to eliminate the formation of an excess number of pulses during non-monotonic rotation of the disk and at the same time significantly simplify the reading device.

Subject invention

A device for converting angular and linear displacements into a sequence of electrical pulses comprising a block

emitters, a readout unit and a perforated disk interposed between them, characterized in that, in order to simplify the device and increase its reliability, the perforations in the disk

placed along a saw-tooth curve with a distance between adjacent vertices greater than the maximum amplitude of the oscillations of the dioka, and the readout unit is designed as a system of sensors placed at the corresponding levels of the saw-tooth curve.