SU165654A1 - - Google Patents

Description

Optics; Skii CONVERTER ANGLE OF TURNING SHAFT

in ELECTRICAL SIGNAL

Optical converters of the angle of rotation of the shaft into an eloktrpchesky signal, known as photoelectric signals, are known, the phase shift between which serves as the angle of rotation of the shaft, which use halogen111 111 and OROT | | limbs C rp dipl M And

transparent gpgrihpmi, r.kmyu.zlospspys be; f; du source of light and (jxrroj.neMciiTaMii. Accuracy of the means of the nj) rotational speeds of the limb limb. However, the frequency response of most commercially available photovoltaic cells, which create npociyjo and reliable sensor detection, does not provide for high-frequency modulation of signals.

: The proposed converter will make it possible, along with the use of 6i) icT-passable D1 and1.111 limbs and bips with a number of 1pthric, to reduce the modulation frequency of the signals and to preserve the lice advantages of the sensors, in which the efficiency is averaged:; all) ntrikhoi. This is achieved by the fact that between the limbs and the modulatory disk of the Ustaioplsi pepodv11 ;;: pygmy limb with the number of lines of prime strokes, or,;

The drawing shows a diagram of the proposed ycTpoiicTBa.

Rotary limb / with radial transparent 1-strich coupling with output transducer 2 transducers. Nevpvpzhpy1 {,; 1imb. has the same number of transparent iHT) iixoi ,, and limb /. The limb /, the inner cover | |) workers (:; o | 1y. Himbop / and //) are also fixed, but the number of transparent strokes doesn’t differ from the number of strokes on the limbs / and 3. The photocell 5 is located with the sensitive superconnects in the form of a ring; a similar annular photocell (located above the working area of limb 3. On

shaft 7 of the modular engine 8 is reinforced with a light guide 9, made in the form of a flat optical ring with conical side surfaces, and a modulator 10 in the form of a disk with transparent slits, structurally compatible with the light guide 9 and located on its noiujxxHocTH. The number nie / ieii t ia disk / 1) is determined by the difference in the number of 1 ntrichs r and 7i ia. Chimos 4 and i or 3:

 - ,.

The lighter can be made in another way (shown in dotted lines in the drawing), using lamps 12. L / Cm / 3/4, 3, 4, having a different number of strokes, form a moiré pattern. In particular, if the numbers of strokes differ by one, then in the case of a picture there will be two rings in which the Thonoii flux around the circumference varies uniformly from maximum to minimum at opposite ends of the diameter. The location of the light maximum in the picture formed by limbumn 1 and 4, in relation to the picture formed by limbs 3 and 4, is determined by the angle of rotation of shaft 2 with limb /. Through

each interval is -, location

moire paintings are repeated.

When the engine 8 is turned on, the disk 10 is rotated, the luminous flux is modulated at a frequency f m-n, where n is the speed of rotation of the modulating disk in rev / sec, and on the photocells signals appear that are close to sinusoidal. At the same time, the phase of the shift signals // relative to the reference signals AND varies from O to 360 ° with the rotation of the shaft 2

rta each is part of the turnover. In this way,

the converter generates low frequency signals, the phase shift of which determines

the angle of the output shaft within the limits of the strokes of one of the limbs. When the limb turns to large angles, the counting of a whole number of strokes is performed by any known means.

The proposed transducer can be used in measuring and tracking systems with compensating phase shifters, pulse-counting transducers as an accurate reference sensor.

Subject invention

An optical converter of the angle of rotation of the shaft into an electrical signal that generates photoelectric signals, the phase shift between which serves as a measure of the angle of rotation of the shaft, containing stationary and rotary limbs with the same number of transparent radial strokes, a light guide made in the form of an optical ring with conical side surfaces and photocells, characterized in that, in order to reduce the frequency of signals when the light flux is modulated by limbs with a large number of strokes, there is a gap between the limbs and the modes -insulating disk mounted nepodvnzhny limb with a number of transparent lines, different from the first two limbs and a conductive modulation dependent on the selected frequency.