SU1578466A1 - Apparatus for measuring displacements of hot rolled stock - Google Patents

Abstract

This invention relates to a measurement technique. The aim of the invention is to improve the accuracy of measuring the movement of hot rolled products by determining the magnitude of the tail section of hot rolled products over several scanning cycles of the optical system and comparing this value with a predetermined value. The optical system 1 with a photoelectric converter with a frequency of the clock generator 2 "scans" the field of view. The scale generator 3, based on the signals of the clock generator 2, generates sequences of pulses that allow the number of pulses to be transferred from the clock generator 2 to physical units of length. The output signal from the photoelectric converter is fed to the amplifier 4, the filter 5 and the amplitude discriminator 6, the output of which a pulse appears when the amplitude of the rising signal of the photoelectric converter exceeds a certain reference level. The node 9 of storing the coordinates of the N points on the rental fixes the coordinate of each point, as well as their number. This information is provided to block 10 for allocating the amount of rolling movement, where the value of the tail section is calculated and compared with a predetermined reference value determined from specific conditions. 3 il.

Description

Fig 1

 looks after the vision. The scale generator 3, based on the signals of the clock generator 2, generates sequences of pulses that allow the number of pulses to be transferred from the clock generator 2 to physical units of length. The output signal from the photoelectric converter enters the amplifier 4, the filter 5 and the amplitude discriminator 6, the output of which a pulse appears when the amplitude of the rising signal of the photoelectric converter exceeds a certain reference level. KNOTE 9 memorizing the coordinates n at the box office fixes the coordinate of each point, as well as their number. This information is provided to block 10 for allocating the amount of rolling movement, where the value of the tail section is calculated and compared with a predetermined reference value determined from specific conditions. 3 il ..

The invention relates to a measurement technique and can be used in a rolling mill to measure the movement of hot rolled products.

The purpose of the invention is to improve the accuracy of measuring the movement of hot rolled products by determining the size of the tail section of hot rolled products over several scanning cycles of the optical system and comparing this value with a predetermined, determined outcome based on specific conditions.

Fig, 1 shows the block diagram of the device; in fig. 2 is a functional diagram of the fixing and storing unit coordinates of individual points on the rental; in fig. 3 is a functional block diagram of the allocation of the rental movement amount.

The device contains optical

system 1 with a photoelectric converter on devices with charge coupling, series-connected clock generator 2 and scale generator 3, series-connected amplifier 4, filter 5 and amplitude discriminator 6, decisive circuit 7 and rental sensor 8 with inverse output. The output of the clock generator 2 is connected to the input of the optical system 1, the output of which is connected to the input of the amplifier 4. The clock generator 2 is controllable. The solving scheme is made in the form of interconnected node 9 of storing n points on the rental and a block O of allocating the amount of movement of the roll, (2n + 2) information outputs

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The node 9 of storing the coordinates of the n points on the rental is connected to (2n + 2) information inputs of the unit 10 for allocating the amount of rolling movement. The second output of the clock generator 2 is connected to the inputs of the end of the scan cycle of the node 9 of storing points on the rental and the block 10 for allocating the amount of movement of hire, the reset input of which is connected to the output of the rental sensor 8, controlling the input of the clock generator 2 and the reset input of the coordinate memorizing node 9 n points on the rental, the switching input of the storage groups of which is connected to the third output of the clock generator 2. The output of the scale generator 3 is connected to the clock input of the node 9 of storing the coordinates of n points on the rental, the signal input of which is connected to the output of the amplitude discriminator 6. The input of the measurement stop and interrogation of the point number at the rental of the node 9 of storing the coordinates of the n points at the rental is connected to the corresponding outputs of the rental movement selection value 10. The signal output and the input of the reference length of the block 10 allocation of the movement of rolled products are respectively the output and input device.

The node 9 of storing the coordinates of the n points on the rental contains, in series, the first trigger 11, the first AND T2 circuit, the first counter 13, the register 14, the first OR circuit 15, the second I-16 element, the third And 17 sequentially connected, the second counter 18, fourth

element 19, the first bypass of which is connected to the output of the first circuit OR 15, and the second input is connected to the first output of the first trigger 11, the first 20 and the second 21 of the coordinate memory group. The R inputs of the triggers 11, 13 and 18, register 14, groups 20 and 21 of the coordinate memory and the second input of the first element OR 15 are combined and are the reset input of the node 9 of the memory of the coordinates of n points on the rental. The second output of the first trigger 11 is connected to the first input of the third element AND 17, the second input of the second element AND 16, and the first input of the second group 21 of the coordinates memory. The second inputs of the elements And t2 and 17 are combined and are the information input of the node 9 for storing the coordinates of n points on the rental. The first input of the first coordinate storage group 20 is connected to the first output of the first trigger 11. The output of the second element AND 16 is connected to the second input of the first counter 13 and the second input of the first coordinate storage group 20. The output of the fourth element And 19 is connected to the second input of the second counter 18 and the second input of the second group 21 of the coordinates memory. The third inputs of the coordinate storage groups 20 and 21 are combined and are the clock input of the node 9 for storing the coordinates of the n points on the rental. The output of the first counter 13 is connected to the fourth input of the first coordinate storage group 20. The output of the second counter 18 is connected to the fourth input of the second coordinate storage group 21. The third input of the first circuit OR 15 is the input of the measurement stop of the node 9 for storing the coordinates of n points on the car, the input for polling the point of rental for which is the second input of register 14, the input From which is the input of the scan end of the node 9 for storing the coordinates of n points for hire The input from the first trigger 11 is the switching input of the memory group of the node 9 of storing the coordinates of n points on the rental. The outputs 1 - n of the first memory group 20 are 1 - n information outputs of the node 9 for storing coordinates of points on a rental 4 (n + 1) - 2 n whose information outputs are 1 - n outputs of the second memory group 21. The output of the second counter 18 is the (2n + 1) th information output.

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the node 9 of storing the coordinates of the n points on the rental, the (2n + 2) -th information output of which is the output of the first OR circuit 15. The first memory group 20 consists of n identical chains and the first decoder 22. The first chain of the series-connected fifth element And 23, and the third counter 24; The p-chain is from the sequentially connected sixth element AND 25 and the fourth counter 26. The R inputs of the decoder 22, the counters 24 and 26 are combined, and J5 is the R input of the first storage group 20. The first inputs of the elements And 23 and 25 are combined and are the first input of the first memory group 20. The second inputs of the elements And 23 and 25 are combined and are the third input of the first memory group 20. The first inputs of the counters 24 and 26 and the first decoder 22 are combined and are the second input of the first storage group 20. The output of the fifth element And 23 is connected to the second input of the third counter. 24, exit six

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And 25 - with the second input of the fourth counter 26. The first output of the first decoder is connected to the third input of the fifth element And 23, and the third input of the sixth element And 25 is connected to the nth output of the first decoder 22. The D input of the first decoder 22 ow The fourth input of the first memory group 20, the first output of which is the output of the third counter 24, and the n-th output - the output of the fourth counter 26. The second memory group 21 consists of n identical chains and a second decoder 27. The first chain of the 8th series connected in series cient and 30 and sixth counter 31. R-inputs of the second decoder 27, the fifth 29 and sixth counter 31 are combined and the P-input of the second group 21 storing. The first inputs of the elements 28 and 30 are combined and are the first input of the second storage group 21 Q. The second inputs of the elements 28 and 30 are combined and are the third input of the second memory group 21. The first inputs of counters 29 and 31 and the second decoder 22 are combined and are the second input of the second storage group 21. The output of the seventh element And 28 is connected to the second input of the fifth counter 29. The output of the eighth element And 30 is connected to the second

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the entrance of the sixth counter 31. The first input of the second decoder 27 is connected to the third input of the seventh element And 28, and the third input of the eighth element And 30 is connected to the nth output of the second decoder 27. The D-pass of the second decoder 27 is the fourth input of the second memory group 21, the first output of which is The output of the fifth counter is 29, and the nth output is the output of the sixth counter 31.

The rolling movement amount selection unit 10 consists of the first comparison circuit 32, the second element OR 33, the seventh counter 34 and the third decoder 25, the second trigger 36 connected in series, the controlled generator 37, the eighth counter 38 and the fourth decoder 39 sequentially connected in series multiplexer, subtractor circuit 41 and adder 42, the output of which is the output of the device, the second multiplexer 43, the output of which is connected to the second input of the subtractor 41, and the second circuit 44 s avneni having a first input connected to the output 41 of the subtractor circuit and the second input is - an input specifying the length of the support block 10 extracts the peremeschayuschegos rolled. The output of the first comparison circuit 32 is connected to the second input of the eighth counter and is the output of polling the point number on the rental of the rental displacement amount selection unit 10, the stop output of which is the output of the second module comparison circuit 44, which is connected to the counter input of the adder R-inputs of the second trigger 36, the counters 38 and 34 are combined and are the (2n + 2) th input of the block 10 for allocating the amount of rolling movement, (2n-H) whose input is from the first input of the first comparison circuit 32, the second input of which is connected to the output eighth score 38. The output of the end of the scan cycle of the block 10 for allocating the movement of rolled products is the S input of the second trigger 36, which is connected to the V, the second input of the second OR circuit 33. The reset input of the block 10 for selecting the value of the moving Rolling is the R input of the adder 42. 1 - The pins of the block 10 for allocating the amount of rolling movement are the information inputs of the first multiplexer 40, p.

the control inputs of which are connected to the n outputs of the third decoder 35, (n + 1) - 2n the inputs of the moving stock size selection unit 10 are the information inputs of the second multiplexer 43, and the n control inputs of which are connected to the n outputs of the fourth decoder 39.

The device works as follows.

Optical system 1 with a photoelectric converter with a frequency of the clock generator 2 views the field of view (P ™). The scale generator 3, according to the signals of the clock generator 2, generates sequences of pulses that allow the number of pulses and the clock generator 2 to be converted into physical units of length. The output signal of the photoelectric converter is fed to the amplifier 4, filter 5 and further to the amplitude discriminator 6, at the output of which a pulse appears when the amplitude of the rising signal of the photoelectric converter exceeds a certain reference level. The first trigger 11 of the node 9 of storing the coordinates of the n points on the rental switches at the beginning of each scan cycle with a signal from the third output of the clock generator 2, corresponding to the start of the scanning cycle. The start of operation of block 10 for allocating the amount of rolling movement is determined by the signal from the second output of the clock generator 2, corresponding to the end of the scanning cycle.

In the absence of rental in the area of the rental sensor 8, the operation of the clock generator 2 is prohibited by the signal of the rental presence sensor 8, controlled by its input, and the counters 13, 18, 24, 26, 29 and 31, the register 14 and the decoders 22 are reset. and 27 of the node 9 for storing the coordinates of the n points on the car, counters 34 and 38, the second trigger 36, and the adder 42 of the block 10 for allocating the amount of rolling movement cleared. Units are present at the outputs of the decoders 22 and 27 of the node 9 for memorizing the coordinates of the n points.

When a rental enters the area of the sensor 8, the presence of the rental signal O from its output resolves the operation of the clock generator 2- and the reset signal is removed from the elements of the node 10 for storing the coordinates of n points on the rental and from the elements of the allocation unit 10 for the amount of movement of the rental.

When a pulse arrives from the second output of the clock generator 2 to the counting input of the first trigger 11, the latter switches and the signal O closes the first AND 12 circuit and the 23 And 25 circuits of the first group 20 of the coordinates memory, and the third scanning signal H 1 and the 28 And schemes 28 30 second group 21 ea

remembering The pulse sequences from the output of the scale generator 3 are fed to the second inputs of the circuits AND 23 25, 28 and 30 and through the open circuits AND 28 and 30 arrive at the counting inputs of counters 29 and 31, which begin to fill up. When a result of scanning at the input of the amplitude discriminator 6 to increase the signal of the photoelectric converter, an pulse appears at the output of the amplitude discriminator 6, which is recorded through the third circuit 17 to the second counter 18, code 1 from the output of which is fed to the first (D) input the second decoder 27, at the first output of which a signal O is formed, closing the seventh circuit AND 28, stopping the supply of pulses of the scale generator 3 to the input of the fifth counter 29. Thus, in the fifth counter 29 is recorded Information about the first bright point on the car with respect to the edge of the field of view P jp of the optical system 1 with a photoelectric converter. When the scanning cycle is continued, the second decoder works in a similar way.27 when it appears at rolling points, and O signals are sequentially generated at the outputs of the second decoder, which prohibit the operation of counters in the n strings of the second memory group 21. Thus, by the end of the first cycle, the coordinates of the bright points on the box are recorded in all counters of the second memory group 21, the n-coordinate is recorded in the sixth counter 31. In the second counter 18 is recorded

information on the number of fixed-,., should function. Managed hard points on the box. At the end of the scan cycle, the signal from the output of the clock generator 2 supplied to the counting input of the register 14 and the input

The second generator 37 delivers a second pulse to the input of the eighth counter 38. The signal 1 from the first output, the fourth decoder 39 is removed, but

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the scan cycle of the allocation unit 10 for rolling out the contents of the first counter 13 is rewritten to register 14, the second trigger 36 is turned on, and through the second input of the second circuit OR 33 to the seventh counter 34 is recorded 1. The contents of the seventh counter 34 are decrypted by the third decoder 35, signal 1 from the first the output of which is the content of the third counter 24 through the first information input of the block 10 for allocating the amount of rolling movement and the first

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40 served at first

input circuit 41 subtraction. Simultaneously, the signal 1 from the output of the second trigger 36 is triggered by the generator 37, the pulses of which are counted by the eighth counter 38. The first pulse recorded in the eighth counter 38 causes the appearance of signal 1 at the first output of the fourth decoder 39, feeding the contents of the fifth counter 23 through the second multiplexer 43 to the second input of the subtraction circuit 41, which subtracts the numbers supplied to its first and second inputs, from the output of which the difference Bj - B t is fed to the first input of the circuit 44 comparing modules of two numbers to the second input is set to a number equivalent to the maximum rolling movement of the scanning cycle 9 (reference length). When condition B is fulfilled: - BJ B the second circuit 44 comparing the moduli of two numbers forms at its output a pulse according to which the value B is. - B j from the output of the subtracting circuit 41 is supplied to the adder 42 for accumulation. The same pulse through the first circuit OR 15 counters 34 and 38 and the second trigger -26, which prohibits the operation of the controlled generator 37, are reset, and the signal from the output of the first circuit 15 OR through the second circuit 16 is reset to O, counters 18, 29 and 31 and second decoder 27.

If the condition Bj-Bj B is not fulfilled, a pulse at the output of the second comparison circuit 44 of the moduli of two numbers is not generated, i.e. block 10 allocation

the magnitude of the movement of the rolled flush generator 37 delivers a second pulse to the input of the eighth counter 38. The signal 1 from the first output, the fourth decoder 39 is removed, but

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appears at its second output, i.e. the output of the next counter of the second coordinate storage group 21 is eliminated through the second multiplexer 43 to the second input of the subtraction circuit 41 of the rental movement value selection unit 10, the first information input of which continues to feed the contents of the third counter 24 of the first coordinate storage group 20, since the contents of the seventh counter 34 did not change "Contents of the seventh count 1578466 2

The second group 21 of the storing of the coordinates is closed, the first scheme AND 12 and the first group of the storing of the coordinates of the nat are opened. The pulses from the output of the scale generator 3 are counted by the counters 24 and 26 of the first group 20 of the coordinates memory. Pulses from the output of the Q 6S amplitude discriminator resulting from the next scan and shadow-light in the field of view corresponding to the transitions. Per of the optical system 1 with a photoelectric converter, count-34 is increased by 1 pulse, 5 with the first counter 13, exit code

The formed output of the first comparison circuit 32 when the contents of the eighth counter 38 supplied to its second input and the contents of the second counter 18 are equal. The contents of register 14 are reduced by 1 pulse from the output of the first comparison circuit 32.

Upon reaching the contents of the register 14 value less than or equal to

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which alternately turns off the first, second, and so on outputs of the first decoder 22, while the AND 23 and 25 circuits of the first coordinate storage group 20 are alternately closed. Thus, by the end of the next scanning cycle, the values of the coordinates are recorded in the counters 24 and 26, and the first counter 13 contains the number of coordinates of individual points on the hire, obtained in this scanning cycle. With the arrival of a pulse from the third output of the clock generator 2, corresponding to the end of the scanning cycle, the contents of the first counter 13 are written to register 14, the first record is written to counter 34, connected to the first input of the subtracting circuit 41, the output of the third counter 24 of the first group 20 of the coordinates memory, turns on the second trigger 36, allowing the operation of the controlled generator 37, i.e. The selection of the rental movement value with accumulation in the adder 42 begins. After the allocation of the rental movement amount during the scanning cycle is completed, the second counter 18 of the second group 21 of the coordinate memory 21 is reset to zero, i.e. they are prepared for the next scan cycle.

to zero, at its output, generate a pulse, which, similarly to the impulse from the output of the second circuit 44 comparing modules of two numbers, stops the block 10 of allocating the rental movement value, resetting the counters 34 and 38 and the second trigger 36 to zero, and also discards the counters 29 and 31 and the second decoder 27. However, this can happen only if, as a result of extracting the amount of movement of the rolling, carried out by determining the difference between the coordinates obtained in this and previous scanning cycles and comparing It does not fulfill condition B: - B-6 V, and also this will happen at the end of the very first scan cycle after the rental enters the zone 8 of the presence of rolled on the first pulse from the output of the first circuits 32 comparison, so first.

Further, the operation of the device from cycle to cycle is repeated. The amount of movement of rolled from the moment

Initially, the contents of the first counter 13 was equal to zero, which overwriting its entry into the zone of the sensor 8 is in the register 14 after the end of the rental cycle and until it is scanned out of this zone with a progressive total.

With the arrival of the next pulse, c is fixed in the adder 42, from the output of the second output of the clock generator 2, corresponding to the beginning of the next

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the movement value is fed to the signal output of the rental movement amount selection unit 10 which can be used in control systems or displayed on the indicator.

scan cycle, first trigger 11 switches, i.e. the signal O appears at its direct output, and 1 at the inverse. The third circuit is AND 17 and

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which alternately turns off the first, second, and so on outputs of the first decoder 22, while the AND 23 and 25 circuits of the first coordinate storage group 20 are alternately closed. Thus, by the end of the next scanning cycle, the values of the coordinates are recorded in the counters 24 and 26, and the first counter 13 contains the number of coordinates of individual points on the hire, obtained in this scanning cycle. With the arrival of a pulse from the third output of the clock generator 2, corresponding to the end of the scanning cycle, the contents of the first counter 13 are written to register 14, the first record is written to counter 34, connected to the first input of the subtracting circuit 41, the output of the third counter 24 of the first group 20 of the coordinates memory, turns on the second trigger 36, allowing the operation of the controlled generator 37, i.e. The selection of the rental movement value with accumulation in the adder 42 begins. After the allocation of the rental movement amount during the scanning cycle is completed, the second counter 18 of the second group 21 of the coordinate memory 21 is reset to zero, i.e. they are prepared for the next scan cycle.

Further, the operation of the device from cycle to cycle is repeated. The amount of movement of rolled from the moment

“Getting him into the zone of sensor 8 is available before the moment of its exit from this zone with a cumulative result

is fixed at adder 42, output

the movement value is fed to the signal output of the rental movement value selection unit 10, which can be used in control systems or displayed on the indicator.

Thus, the device for measuring the movement of hot rolled products allows to exclude from the result the errors caused by the change in the location of the points corresponding to the shadow-light boundaries caused by the presence of foci of scale on the controlled rolling.

The number of counters in each coordinate storage group is determined by the value of B and the length of the rolled stock 1 b with clearly pronounced foci of scale.

Claims (1)

n 1 b / b. Invention Formula A device for measuring the movement of hot rolled products, containing an optical system with a photoelectric converter on devices with charge coupling, series-connected clock generator and mashstabny generator, series-connected amplifier, filter and amplitude discriminator, a decision circuit and a sensor for the presence of rolled products with inverse output, output the clock generator is connected to the input of the optical system, the output of which is connected to the input of the amplifier, characterized in that, in order to increase the measurement accuracy, the clock the new generator is controlled L. 0 five 0 five 0 five decision circuit - in the form of interconnected node of storing n points on a rental and block of rolling stock movement size, 2p + 2 information outputs of the node storing coordinates of n points on a bar connected to 2p + 2 information inputs of block rent moving value, the second clock output the generator is connected to the inputs of the end of the scan cycle of the node storing the n points on the rental and the block for allocating the amount of rental movement, the reset input of which is connected to the output of the rental presence sensor controlling the input The house of the clock generator and the reset input of the node for storing coordinates of n points on the rental, the switching input of the storage groups of which is connected to the third output of the clock generator, the output of the scale generator is connected to the clock input of the node storing the coordinates of n points on the rental, the signal input of which the discriminator, the measurement stop input and the interrogation of the point number at the rental of the node for storing the coordinates of the n points at the rental are connected to the corresponding outputs of the value allocation unit moving neither the rental, the signal output, and the input of the reference of the length of the allocation unit for the amount of rolling movement are respectively the output and the input devices. . Fig 2 Fig.Z