SU1596212A1 - Apparatus for measuring width of rolled strip - Google Patents

Abstract

This invention relates to instrumentation technology. The purpose of the invention is to improve accuracy and speed by using side edge position sensors without discrete scanning. The device consists of a graduation unit 1 and sensors 2 and 3 positions for optical communication with opposite edges of the rental strip, and a correction computing unit 18 electrically connected with unit 1 and sensor 2 and 3. The position of the edges of the rental strip is continuously measured by sensors 2 and 3, the signal from the output of which is periodically adjusted in block 18 by signals from the calibration unit. 2 hp ff, 5 ill.

Description

The invention relates to measuring technique. The purpose of the invention is to improve the accuracy and

performance through the use of position sensors side edge without discrete scanning. The device consists of a graduation unit 1 and sensors 2 and 3 positions intended for optical communication with opposite edges of the rolled strip, and a corrective computing unit 18 electrically connected to unit 1 and sensors 2 and 3. The position of the edges of the rolled strip is continuously measured by sensors 2 and 3 The signal from the output of which is periodically adjusted in block 18 by the signals from the graduation block. 2 hp f-ly,

5 il.

1

3

1596212

four

The invention relates to a measuring instrument technology and can be used to measure the width of sheet materials. $

The purpose of the invention is to improve the accuracy and speed due to the use of sensors for the position of the side edge without discrete scanning.

FIG. 1 shows a block diagram of the proposed device; in Fig.2 is a block diagram of the processing unit of the sensor position of the edge; in fig. 3 - the same, the processing unit of the graduation unit; in fig. 4 - location of the photodetectors relative to the measured rolled strip; in fig. 5 - time diagrams of the operation of the device blocks.

The device consists of a calibration unit 1 and two identical sensors 2 20 and 3 positions designed for optical communication with opposite edges of the rolled strip, the calibration unit 1 consists of optically coupled optical radiation sources 4, a splitter 5 and a sweep unit 6 with an angle sensor 7 speed, optically coupled receiving optical system 8, designed for optical 'ι 30 -connection with unit 6 through the rental, and photodetector unit 9, consisting of two photocells, circuit 10 processing, the first and second The holes of which are connected to the outputs of the photodetector unit, and the third input is connected to the output of sensor 7 and synchronization circuit 11, the input of which is connected to the synchronization output of block 6, and the first output is connected to the fourth input of circuit 10. Each of the sensors 2 and 3 consists of optically coupled optical radiation source 12 and a transmitting optical system.

13, optically coupled receiving optical system 14, designed for optical communication with the system 13 through the rental bar, and the photodetector 15, and the processing unit 16, the first input of which is connected to the photo-50 output of the receiver 15, and the second input is combined with the control input of the source 12 and is a modulating input of sensors 2 and 3. The device also consists of a modulator 17, the output of which is connected to the modulating inputs of sensors 2 and 3, the control input of source 4 and the fifth input of circuit 10, the computational correction unit 18,

the first and second inputs of which are connected to the outputs of blocks 16, sensors 2 and 3, respectively, the third input is connected to the second output of timing circuit 11, and the fourth output is connected to the output of circuit 10, and the display and control unit 19, whose input is connected to the output of block 18 and the first, second and third outputs are connected to the third inputs of the block 16, sensors 2 and 3 and the fifth input of the block 18.

The processing unit 16 consists of a series-connected smoothing circuit 20, the input of which is the input of the block 16, the normalization circuit 21, a synchronous detector 22 whose reference input is the second input of the block 16, and an analog-to-digital converter 23 whose start input is the third input of the block 16 and the output is the output of block 16.

The processing circuit 10 consists of two identical circuits, each of which consists of a series-connected matching cascade'24, narrowband amplifier 25 ,. synchronous detector 26 th (amplifier) shaper 27 monitors, circuit inputs are the first and second inputs of the circuit 10, the reference inputs of the detectors 26 are combined and are the five? input circuit 10, drivers 28 and 29 pulses, the inputs of which are connected to the output of the first circuit, drivers 30 and 31 pulses, the inputs of which are connected to the output of the second circuit, the reference inputs of the drivers 28 - 31 pulses are combined and are the fourth input of the circuit 10, integrators

32 and 33, the first: the inputs of which are combined and are the third input of the circuit 10, the second inputs are connected to the outputs of the drivers 28 and 30, respectively, and the third ′ inputs are connected

to the outputs of the formers 29 and 31 co. responsibly and analog-to-digital Converter 34, the inputs of which are connected to the outputs of the integrators 32 and

33 respectively, and the output is the output of circuit 10.

The device works as follows.

The optical systems 13 of the sensors 2 and 3 form the optical modulated radiation of the sources 12 in such a way that the cross sections of the light beams in the plane of the rolled strip represent 6

5 1596212

They are narrow rectangles that are perpendicular to the side edges (Fig. 4a). The part of the beam of the beam that is not overlapped by the strip falls on the corresponding photodetector 15 and is converted by the block 16 into a digital code, the value of which reflects the position of the side edge of the car relative to the light beam of the corresponding sensor 2 or 3. The sensors 2 and 3 are configured in this way so that, in the absence of a rental band, the code at the outputs of sensors 2 and 3 was equal to zero, 55 and with full overlapping of the band of light beams at the outputs of sensors 2 and 3, there was the same positive value of the code signal.

If you select a particular system of 20 coordinates X, Y and Ζ, then the coordinates of the side edges of the car will be determined by the expressions

X, = X ₀ , ⁺ Bh, H ι}

Hu = X _v1 + k1, Ы 81, k <, (1) 25

where X, X ₂ - coordinates of the side edges

rolled in the selected frame of reference;

X, X. - constants dependent on

selecting a reference point and a base distance between sensors 2 and 3;

βιιιι ^{- the} output code ^values of the signal processing units 16 of the sensors 2 and 3, respectively;

k - constant coefficient ,. . determined by the configuration of the cross section of the light beam in the rental plane, dd, as well as the procedure for setting sensors 2 and 3;

’1,, ¼“ coefficients for sensors 2 and 3, determined by the intensity of the source of 12 45 optical radiation, the uniformity of the light flux over the beam section, the sensitivity of the photodetector 15, as well as 50

the stability of the sensitivity of the channel block 16.

Getting synchronous values Ν i Ν ^ _{(χ g} (synchronism is provided by pulses from the outputs of blocks 19 of the display and control), we find the width of the rolled strip by equations (1)

L'H, _r > ⁺ H1, S

where b is the width of the rolled strip.

In (2), the values of the constants X,., X,, "2 'к ^ ,, к ^ are easily determined experimentally, for example, by calibrating the device, but measuring the width of the rolled strip by formula 2 when using only sensors 2 and 3 is impossible from - due to the drift of the intensity of the source 12, the drift of the sensitivity of the photodetector 15 and the conversion channel of the block 16, as well as due to changes in the transparency of the optical path, due to contamination of the surfaces of the optical parts during operation. Let these drift instabilities lead to a change in the initial coefficients 1, = 1 _А = 1 „by the values Л, and / 1, respectively, i.e.

1, = 1, + 41 ,,

1 _g = 1 <, + W _g . (3)

It is clear that the drift instabilities L1 and Δ1 _g will lead to a change in the values of Ν _{6Ι (Χ1} and N _в4 , _х2 by the value of 5Ν _{β & (χί} and L N vihg.

Νβ4 / χί = Ν _β6№ g;

Νβ ,, ϊΐ = Ν ^, χ ^ + ζίΝ _βι1); · Ι, (4)

where Ν ^ _{Μχ (} , Ν " _{their 4} are the values of the code

signal output

blocks 16 sensors 2 and 3 respectively! . venno.

In view of (3) and (4), expression (2) takes the form

(five)

l <x _with , + x _og ) + to _g / n; ₄ , _X1 + < _1hg n ·

+ k + “- \ ^{t l} )

^{+ κ} 7ο -ι '' ЬЧМ, ^Л В41Х1- '· о

Denote the width of the rolled strip, obtained by the formula (2),

through b _DPH , then

^ Apk ^- ^ X «ι ⁺ X _оТ > ^{+ to} ίο (Ν 6ХХ1 Ыых ι) · (6)

As seen from (5), the true value of the width of the rolled strip to be different from PDPA ^ka value of systematic error which varies with the time constant of the order of seconds

doo = b-bd _P | <-k (ζΐ ^, Ν _{& 41X} , + L1 _? N _B4i1 )

(7)

The systematic error is eliminated in the computational correction unit 18 by introducing the correction correction factors P and P _g to the values Ν _Β4ΙΧ1 and N ^ "code signals" obtained at the outputs of the signal processing units 16 of sensors 2 and 3 in accordance with the Formula expression analysis (5)

(X р, + Х „ _г ) + к # _о [(1 +“ -) Ν _β " _Μχί + (1 +

D) IX g ’

^x Ό

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(eight)

The values of the correction coefficients of the values of N _В4т and К _{βίιχ g} block 1

ten

graduations by formulas, from (4), (5) _} (8),

p ^Lj 1! £! =

^Ε ί N ..... ¹ 1l '

received

these edges of the rolled strip (Fig. 4b), the output signal is absent (Fig. 56 and b), since the rays pass outside the rolled strip and are not reflected from its surface (Fig. 4c).

Let the first and second rays reach the first side edge of the car at points G, and P ₂ (Fig. 4d) and respectively (Fig. 56 and c). Moving further, they hit the surface of the strip, are reflected from the surface of the strip and are recorded by the photo-cells of block 9, moving in the areas and В _{г <} At some point the first beam and point

η

_ Νβϊ / Χ2_

“Ν

'you*

'611 *

-about

15

TO.

(10) 20

1 + ^.

to Ό (9)

Expression (8) with the designations (9) takes the form

5ПКТ0ί «ί

Finding the values of P, and P _{2 is} carried out at each measuring cycle of the unit 1 graduation. Measuring the values of _{И 6ИХ} , and Ν _{βςιχ 2} to determine the coefficients P <and P ₂ according to the formulas (9) is as follows.

The output sinusoidal voltage of the modulator 17 modulates the intensity of the optical radiation of the source 4. The modulated light beam is split by the splitter 5 into two light beams, which, after passing the sweep unit 6, perform transverse scanning movements with respect to the rental strip within the measuring zone, and the light spot trajectory on the rolled moving strip 35 from these rays will be inclined at a certain angle, depending on the speed of movement of the strip, to the direction of movement of the strip.

At the time of entry of the rays into the measuring zone, the sweep unit 6 generates reference pulses, which arrive at the synchronization circuit 11 and serve to process the signals received from the block 9.

Denote the points at which the first and second beams cross the rolling plane at the moment of arrival of the reference pulse, by P, and T> _ί, respectively (Fig. 4). Making transverse scanning movements, the rays enter the measuring zone and move in the areas А ₁ and А ^.

Thus at block 9, which are located in the aperture image Oblas _Ί second beam go out of the field of view (portion of the plane in which

there is a rolled strip, limited by the angular aperture of the block 9) Photo cells of block 9 and in areas C

one

and the output of the photo signal will not be.

At the point K 'the first beam and the point K _{2 the} second beam will again fall into the field of view, but already other photovoltaic cells of block 9 (areas P ₇ and P ₂ ). When the rays are reached at points P 'and At the second edges of the rolled strip, the output signals at the output of block 9 will disappear (areas E and E ^), since the rays 30 will move out of the band.

The processing circuit 10 measures time intervals containing information about the positions of the first and second lateral edges of the strip, i.e.

35 values of Ν _{β (} ,, _χι and N _86/1 . _2. Identification of the necessary information is as follows.

Since the second and first rays are developed by one device with rigid constant links, the instantaneous values of the angular velocities of their movement are the same si, = u) _z = (4

Therefore, the angular position of the first side edge will be when measuring 45 the first ray ^,

25

50

about

when measured with the second beam of M'H! ωάί,

(eleven)

(12)

while finding the average of (11)

55

.one

2 ~~ 2 2

(12)

(13)

where ¢ ,, ¢ ,, - the values of the angular position of the first side

strip edges;

Μ> _β , and Ф _cr are the angular positions of the lane 9

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first and second rays, respectively, at the time of arrival of the reference pulse.

Definition and clear from the graph in FIG. 5g. It is completely similar for the angular position of the second side edge when measured by the first beam.

01

υ

when measured with the second beam l * s _g

(14)

(15)

when finding the average of (14) and

(15)

<·

• t;

where c /, φ ', φ' are the angular values

the position of the second side edge of the strip,

definition and it is clear from fig.5d.

We put that value

instructions.

Thus, the processing circuit 10 measures the angular positions cp and ψ * of the side edges of the strip in accordance with formulas (17) and transmits these values to the computational correction unit 18, in which

equally

the zero corresponding to the beam intersects the plane of the strip at the point 0 beginning of the coordinate axis OX (Fig. 4a), and the axis of the sweep device passes through the point of the axis 0Υ with the coordinate equal to. T. In t ^ com ^next Y ^tea ,

eleven

s / _g = 2 ⁽¹⁷⁾ '

Accordingly, the width of the rolled strip will be

B = T (cC ₂ | 5 ω <1s + cG ₂ | 5 ωάϋ). (18)

^Ζ ί. ^Ζ γ "

ν, 4

Comparison of expression (18) with expression (2) gives equations for finding the desired values _{ом (> ΙΧ1} and N _{β4ιχ a}

With ι

TCC T ₂ ^ 3 _(w 8c = X _"s ⁺ n to _{Bk (x1;}

l 1

[TcC ^ 5 ω 4С = Х + к _{е <} Н _П1К1 . (nineteen)

Parameters Τ, X ₀ , X _B2 , _K , 1. _{o are} determined during the operation of the initial device setup, as well as by the known dimensions of its const1 0

formulas (19) and (9) calculate the values of the correction coefficients P, and? 2 and until the end of the next measuring cycle of block 1 of calibration, the values of P, and P _{2 found} remain unchanged and are used to adjust the bandwidths found by the readings from the readings of the sensors 2 and 3 by the formula (10).

Claims (1)

The invention relates to a control measurement technique and can be used to measure the width of sheet materials. The purpose of the invention is to improve accuracy and speed by using position sensors of the side edge without discrete scanning. Ma FIG. 1 is a block diagram of npe; yiaraeMoro device; Fig. 2 is a block diagram of an edge position sensor processing unit; in fig. 3 - the same, the processing unit of the graduation unit; in fig. 4 - the location of the photodetectors relative to the measured rolled strip; in fig. 5 - time diagrams of the operation of the device blocks. The device consists of a calibration unit 1 and two identical sensors 2 and 3 positions designed for optical communication with opposite edges of the rolled strip; the calibration unit 1 consists of optically coupled optical radiation source 4, a splitter 5 and a sweep unit b with an angular velocity sensor 7 optically coupled to an optical receiving system 8 for optical communication with unit 6 via the rental bar and a photodetector unit 9 consisting of photo cells, processing circuit 10, first and second inputs They are connected to the outputs of the photodetection unit, and the third input is connected to the output of the sensor 7 and synchronization circuit 11, the input of which is connected to the synchronizing output of block 6, and the first output is connected to the fourth input of the circuit 10. Each of the sensors 2 and 3 consists of optical sources 12 and optical systems 13, optically coupled to an optical receiving system 14 for optical communication with system 13 via a rental bar, and a photodetector 15, and a processing unit 16, the first input of which is connected The second input is combined with the control input of source 12 and represents the modulation input of sensors 2 and 3. The device also consists of a modulator 17, the output of which is connected to the modulation inputs of sensors 2 and 3, which controls input source 4 and the fifth input of circuit 10, computational correction block 18, the first and second inputs of which are connected to the outputs of blocks 16, sensors 2 and 3, respectively, the third input is connected to the second output of synchronization circuit 11, and the fourth output is connected to the output of circuit 10 and blo display and control 19, the input of which is connected to the output of block 18, and the first, second and third outputs are connected to the third inputs of block 16, sensors 2 and 3 and the fifth input of block 18. Processing block 16 consists of series-connected smoothing circuit 20, the input of which is the input of block 16, the normalization circuit 21, the synchronous detector 22, the reference input of which is the second input of block 16, and the analog-digital converter 23, the start input of which is the third input of block 16, and the output is the output of block 16 Scheme 10 processing state IT of two identical circuits, each consisting of a series-connected matching cascade 24, narrowband amplifier 25 ,. synchronous detector 26 and (amplifier) imaging generator 27, the inputs of the circuits are the first and second inputs of the circuit 10, the reference inputs of the detectors 26 are combined and are the five inputs of the circuit 10, the formers 28 and 29 of the pulses, the inputs of which are connected to the output of the first circuit, the formers 30 and 31 pulses whose inputs are connected to the output of the second circuit, the reference inputs of the formers 28 to 31 pulses are combined and are the fourth input of circuit 10, the integrators 32 and 33, the first inputs of which are combined and are the third input of circuit 10, the second input connected to the outputs of shapers 28 and 30, respectively, and third inputs connected to the outputs of shapers 29 and 31 co. responsibly and analog-to-digital converter 34, the inputs of which are connected to the outputs of the integrators 32 and 33, respectively, and the output is the output of the circuit 10. The device operates as follows. The optical systems 13 of sensors 2 and 3 form the optical modulated emission of sources 12 in such a way that the cross sections of the light beams in the plane of the rolled strip represent 51159 narrow rectangles spaced perpendicular to the side edges (Fig. 4a). The part of the beam of the beam, not overlapped by a strip, hits the corresponding photodetector 15, is converted by the block 16 into a digital code, the value of which reflects the position of the side edge of the projection relative to the light beam of the corresponding sensor 2 or 3. The sensors 2 and 3 are configured so that the absence of a rental band the code at the outputs of sensors 2 and 3 was equal to zero, and with the entire overlap of the band of light beams at the outputs of sensors 2 and 3 there was the same positive value of the code signal. If you select a particular X, Y, and Z coordinate system, then the coordinates of the lateral edges of the rolled products will be determined by the X, X, + kl, Ng, фа effects; X., X, j, + kl, Nei.-i, (1) where X, X are the coordinates of the side edges of the rolled in the selected frame of reference; X, X are constants, depending on the choice of origin and base distance between sensors 2 and 3; N., N .... are the values of the output code B11 ". , - - block 16 signal processing sensors 2 and 3, respectively; k is a constant coefficient, determined by the configuration of the light beam cross section in the rolling plane, as well as by the procedure for setting sensors 2 and 3; . 1, 14 — coefficients for sensors 2 and 3, determined by the intensity of the optical radiation source 1, the uniformity of the light flux over the beam section, the sensitivity of the photodetector 15, and the stability of the sensitivity of the channel of the block 16. Obtaining synchronous values Njj,;, and, J (synchronism is provided by pulses from the outputs of the display and control units 19), we find the rolling stock hairen using equations (1) ./x(x.4-x,)-.k(i,N в, „; - s, n, ,,,,) where L is the width of the rolled strip. In (2), the values of the constants X., X., k ,, kfj are easily determined experimentally, for example, by calibrating the device, however, measuring the width of the rolled strip by formula 2 using only sensors 2 and 3 is impossible due to source intensity drift 12, the drift of the sensitivity of the photodetector 15 and the conversion channel of the unit 16, as well as due to changes in the transparency of the optical path, due to contamination of the surfaces of optical components during operation. Let these drift instabilities lead to a change in the initial coefficients of l. d 1 and / l1 respectively, i.e. 1.1 ,,; . It is clear that the drift instabilities (111 and / 31 7) will lead to a change in the values of Ng,., And t ,, n the value of Ng ,, and LN vkha. Nei / x-f Hb, g, + lKbig; Nenti Ne4, y, j + 4N gj; the value of the code I 61IX 4 signal at the output of the blocks of 16 sensors 2 and 3, respectively. venno. (4) expression (2) With regard to (3) and takes the form L (X ,, - bX,) H-kf (Ne +, r-il-M to-L Lmm + t VIKh4-O. We denote the value of the gauin of the rolled strip , obtained by the formula (2), through then ...). The AIC (X Like DITCHO from (5) the true value of the width of the rolled strip will differ from T.y.p. by the amount of systematic error varying from a constant time of the order of seconds dy L-LAnK k (p, N 1 ,,, Except systematic warming). - is produced in the computational correction unit 18 by introducing correction correction factors P and PJ to the values of Ng and -N iij code signals received at the outputs of the signal processing units 16 of sensors 2 and 3 in accordance with the formula obtained on the basis of expression (5) L (X ,,, p4-k J (uf-4N; ,,, + () N 1 kigg-o Z The values of the correction coefficients P, and P are determined after finding the values of N d ,,, and N gt, calibrations using the formulas obtained from (4), (5), (8). lp N 1.1. r Hv (NG2. dl N ™ gG 17 Expression (8) taking into account the notation (9) takes the form (10) + P N L-H 5 5 (, lXt) Finding the values of P. and P is carried out at each measuring cycle of the calibration unit 1. The values are measured N ac, euif 2 A The determination of the coefficients P and P by formulas (9) is as follows. The output sinusoidal voltage of the modulator 17 modulates the intensity of the optical radiation of the source 4 o. The modulated light beam is split by a splitter 5 into two light beams, which, after passing the sweep unit 6, make transverse scanning movements along the measuring strip to the strip of rolled metal within the measuring zone, while the light trajectories the spot on the rolled strip 35 from these rays will be inclined at a certain angle, depending on the speed of the strip, to the direction of the strip s. At the moment of entry of the rays into the measuring zone, the sweep unit 6 generates reference pulses, which arrive at the synchronization circuit 11 and serve to process the signals received from block 9. Denote the points at which the first and second beams cross the rolling plane the moment of arrival of the reference pulse, through D and D appropriately (Fig. 4), Having made transverse scanning movements, the rays enter the measurement zone and move in areas A and A. In this case, at block 9, in the aperture of which images of rolled strip edges (Fig. 4b), the output signal is absent (Fig. 56 and c) since the rays pass outside the rental band and are not reflected from its surface (Fig. 4c). Let the first and second beams reach the first side rolling edge at points F and F, 2 (Fig. 4d) and respectively (Fig. 56 and c). Moving further, they fall on the surface of the strip, are reflected from the surface of the strip and are recorded by the photo cells of block 9, moving in areas B and B ,. At some point K, the first beam Kj of the second beam will emerge from the FIELD and the view (part of the plane in which the rolled strip is limited by the angular aperture of block 9) of the photocells of block 9 and in areas C and C. there will be no output signal. At the point of the first beam and the point of the second beam again fall into the field of view, but already other photovoltaic cells of block 9 (areas D and Dj). When the rays are reached at points F J and F of the second edges of the rolled strip, the output signals at the output of block 9 will disappear (areas E and F-) as the rays will move out of the band. Processing circuit 10 measures time intervals containing information about the positions of the first and second lateral edges of the strip, i.e. values, and N 8,;. The discovery of the necessary information is done in the following way. Since the second and first rays are deployed by one device with rigid permanent connections, the instantaneous values of the angular velocities of their movement are the same tu, 00 tU Therefore, the angular position of the first side edge will be measured by the first hole, 1 second of the first side edge of the strip; Chsg. Are the angular positions of the first and second rays, respectively, at the time of arrival of the reference pulse. The definition of fj and Γ sno from the graph in FIG. 5g. It is quite similar for the angular position of the second side edge when measured with the first beam r V 1 when measured with the second beam / 1 t I. when finding the average of (14) and i ±. . IJ dt, (16 where Q,, tf are the angular position values of the second side edge of the strip, the definition of f and is clear from Fig. 5.d. A, V1 Ucf + fei the coordinate axis OX (Fig. 4a), and the axis of the sweep device passes through a point of the axis OY with a coordinate that is different. In the case of, t, fi 1, - i I wdt; (/ r Ja) dt. (17) x1 - L Accordingly, the width of the rental bandwidth will be InI (| (ctgr UJ dt + ctgr) codt). (. A comparison of the expression (18) with the expression (2) gives the equations for finding and N gH; the desired values of N Tctgrj W. ,, N it t X -bkj / ,,,,. (19) Parameters T, X (,, The% -o is determined during the operation of the initial setup of the device, as well as by the known dimensions of its design. Thus, the processing circuit 10 measures the angular positions of C) and the side edges of the strip in accordance with formulas (17) and transmits these values to the computational correction unit 18, in which the values of the correction factors F, and Pj and up to ok are calculated by 159 (15 formulas (19) and (9)) The readings of the next measuring cycle of block 1 of calibration, the values found for P, and P remain unchanged and are used to adjust the values of the bandwidth found by the indications from the indications of sensors 2 and 3 according to the formula (10). Invention 1. The measuring device the width of the rental strip containing two sensors for the position of the edge of the rental strip, each of which consists of a radiation source and a photomultiplier designed for optical communication with the corresponding edge of the rental strip, and a control unit characterized by In order to improve accuracy and speed, it is equipped with a calibration unit, made in the form of: optically coupled radiation source, splitter and sweep unit with an angular velocity sensor, and optically coupled optical receiving system designed for optical communication with the sweep block through the rental bar, and the photodetector unit, the processing circuit of the graduation unit, the first two inputs of which are connected to the outputs of the photodetection unit, the third input is connected to the output of the angular velocity sensor, and the circuit with synchronization, the input of which is connected to the sync output of the sweep unit, and the first output is connected to the fourth input of the calibration circuit processing circuit, a computational correction unit, information inputs of which are connected to the outputs of the rolled strip edge position sensors and on the calibration circuit processing circuit, the second output of the synchronization circuit, each sensor of the position of the edge of the rolled strip is equipped with an optical system for forming a narrow light strip, optically bound with a source of radiation and the sensor signal processing unit having an input connected to the output of the photodetector, and the output is the output of the sensor, the control unit is adapted to the three outputs connected to the control inputs of the sensors and signal processing units vmislitelnogo correction Oloka respectively. 2, the device according to claim 1, characterized in that it is supplied with a modulator, sources of the calibration unit and sensors for the position of the edge of the rolled strip are made with modulating (their inputs. Connected to the output of the modulator, and the processing circuit of the calibration unit and signal processing units the sensor is made with reference inputs connected to the modulator output. 3. The device according to claim., that the processing circuit of the calibration block is made in the form of two circuits, each of which consists of a series-connected synchronous detector and rmirov videopulses bodies, chain inputs are inputs of the first and second processing circuits, respectively, reference Ixoff / 8th / 1 2 The 12 inputs of synchronous detectors are combined and are the reference input of the processing circuit, the first and second pulse formers, the inputs of which are connected to the output of the first circuit, the third and fourth pulse formers, the inputs of which are connected to the output of the second circuit, the reference inputs of the driver and are the fourth input processing circuits, the two integrators, the first inputs of which are combined and are the third input of the processing circuit, the second inputs are connected to the outputs of the first and third driver, respectively, third inputs connected to the outputs of the second and fourth formers, respectively, and analog-to-digital converter, the inputs of which are connected respectively to the outputs of the integrators, and the output is the output of the processing circuit. Uxo02