SU1114882A1 - Device for measuring hot rolled stock dimensions - Google Patents

Abstract

A DEVICE FOR MEASURING THE SIZES OF THE HOT ROLL, containing a series-connected photoelectric converter, a video signal envelope unit, a peak detector, a voltage divider, a first comparator and a measuring unit, the output of the video envelope shaping unit is connected to the peak information input. detector and the first input of the first comparator, the second input of which is connected to the output of the voltage divider, the input of which is connected to the output of the peak detector, characterized in that, in order to improve the measurement accuracy, it is equipped with a second comparator and trigger, the peak detector is controlled, the first and the second inputs of the second comparator are connected to the output of the OGI® block forming unit and the peak detector output, the trigger setup inputs are connected to the outputs of the first and second comparators, and the trigger output is connected not with control input of peak detector.

Description

The invention relates to a "measuring technique" and can be used to measure casting) size, of large objects, such as irokate.

A device for measuring the dimensions of a torus of irokat is known, containing sequentially connected | 1) an optical converter, b,) (to form the Bideosi envelope; gal, and a measuring unit p I,

Deficiency; device - dependent; the extent of the measurement results from the rental rate of the rental.

The most compatible Olyzragms are ycjportcTBo for measuring 1) 1m size of rolled metal, containing: after / 101 lt. t: 1b connected photo e.ch.; 1cc iDa converter, block of rounding skirting 1 (by its video signal, TiuKOBbui detector I shared a commanding device and a measuring unit, an output, a video signal envelope unit, connects a video signal with a video signal; : very close to the output of the njiKOBoro detector 2 j.

The disadvantage of the known ycTpoficTB is the value of the bridge between the result of measuring 1-pg from the linear spreader of the object, which is the constant constant time of the ITHJ-: OBOIO detector, in the known) level of parsing along the front and rear fronts of the OBOIO detector I didn’t read about the pinnacle and zapiop from the size of the object. At the very beginning of the time, the niiKOBoro detector is limited by the rate of change of radiation.

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Invention Tse-N'y (M11-g - accuracy of iz.-noseny.

This goal is achieved by the fact that it has a hot-dip ycTpoiicTBO of 5eper size, which contains a sequence of j ts about a d d den f ii (b o toe electric transformer , block () ordered the envelope of the signal, peak detector, voltage divider, first chararator and measuring unit, output, unit for forming the envelope of r-y signal, soy, dinene with -TH4) OpMaL noinib Ni input of the hcd detector and the first one

Comparator5 the second input of which is connected to the output of the voltage divider, the input of which is connected to, a peak detector detector, is equipped with

the second comparator and trigger, the detector1) detector is made by control, the first and second inputs of the second comparator are connected to the output of the envelope shaping unit and the output

 plaster, tsetektora ,, installation

the trigger input is connected to the outputs of the first and second comparators, and the trigger output is connected to the control input of the peak detector.

 . Pa drawing presents a functional diagram of the device.

The device contains a photoelectric converter 1 connected in series, a video signal envelope block 2, a peak detector 3, a divider 4 eg Keny, a first comparator 5 and a measuring unit 6 connected in series by a second comparator 7 and a trigger 8,

The device works as follows.

The image of object 9 is converted by a photoelectric converter 1 into a video signal, the amplitude of which is proportional to the distribution of capacitance; in the image of object 9, the envelope of the signal is extracted by block 2 of the envelope of the video signal.

When the amplitude exceeds 1, I go around -. i; eii of the video signal of a level close to that of the amplitude value of agoi, baiuid. which forms a peak detector 3 and a divider 4, for example, 1IA, the comparator 5 is triggered. ) asr; 1wrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrvrrrrrrrrrrrrrrrrrrrrrrrrrrr аrrrrrrrrrrrrrrrrrrrish 8 A control signal is generated causing the peak detector 3 to discharge.

When the voltage on the peak detector reaches 3 levels, below the level of the video signal envelope,

. the comparator 7 is triggered, the output signal from which the trigger 8 is pushed to the state in which the bit of the peak detector 3 stops.

After the end of the bit, the peak detector 3 is charged to the amplitude value of the envelope of the video signal. When the amplitude of the video signal envelope is reduced to a level close to

311148824

to half of the amplitude value, the time interval is measured variable, it is secondarily triggered by a compact block; . Parator 5.

Thus, in one cycle. Thanks to the periodic measurement measurement at the output of the comparator for-5ДУ peak detector in each cycle

time interval is measured; its length is measured over time

whose strength is proportional is not limited by the speed of the object. Formed the brightness of the object.

Claims (1)

DEVICE FOR MEASURING HOT ROLL SIZES, comprising a series-connected photoelectric converter, a video envelope shaping unit, a peak detector, a voltage divider, a first comparator and a measuring unit, the output of a video envelope shaping unit is connected to the information input of the peak detector and the first input of the first comparator, the second which is connected to the output of the voltage divider, the input of which is connected to the output of the peak detector, characterized in that, in order to increase To ensure measurement accuracy, it is equipped with a second comparator and trigger, the peak detector is controllable, the first and second inputs of the second comparator are connected to the output of the envelope formation unit and the output of the peak detector, the trigger setup inputs are connected to the outputs of the first and second comparators, and the trigger output is connected to the control peak detector input.