SU916983A1 - Photoelectric device for measuring article linear dimensions - Google Patents

Description

(5k) PHOTOELECTRIC DEVICE FOR MEASURING LINEAR DIMENSIONS OF PRODUCTS

one

The invention relates to a measurement technique and can be used to measure the linear dimensions of an article, for example, rolled metal.

A device for automatically measuring the width of roll materials is known, comprising an illuminator, two photo sensor arrays, a calculating unit, two valve blocks, a current width register, a reference width register, a comparison block and a delay element tn.

The disadvantage of the device (this is the e-ts large measurement error in the presence of interference in the optical channel due to the inertia of the mechanical system for adjusting the lines of photosensors.

The closest to the invention in technical essence and the achieved result is a photoelectric device for measuring linear rags. measures of products containing discrete photoelectric converter

on devices with charge coupling, survey generator, counting pulse former, result counter and: measurement, memory block, 1-pulse clock counter and indicator 121.

The drawback of the device is the low measurement accuracy in the presence of interference, for example, smoke, water splashes in the optical channel due to the fact that

10 of a satisfactory si-nal / noise ratio, it is necessary to significantly increase the exposure time to increase the amplitude of the output of the photovoltaic converter, but in this case

 When measuring moving objects with large transverse displacements, an increase in the duration of the fronts of information video signals occurs.

20

The purpose of the invention is to improve the measurement accuracy.

Claims (2)

The goal is achieved by the fact that the device is equipped with an additional discrete photoelectric device on devices with communication charges, a pulse shaper, a switch, a unit for forming the magnitude and a sign of the difference, and an OR element, an element OR, a formative counter pulse, The measurement result counter, the memory unit and the indicator are connected in series with the output of the clock counter connected to the memory unit, the indicator, the measurement result counter and the shift pulse generator, the input after The bottom of the go is connected to the switch, the input of the value generator .if the difference signs are connected respectively to the meter of results, measurement, and memory, and the outputs to the switch and the shift pulse generator, whose outputs are connected to the inputs of the corresponding discrete photoelectric converters, the outputs the latter are connected to the OR element, and the polling generator is connected to the input of a switchboard and a clock counter. The drawing shows a diagram of the proposed device for measuring linear dimensions. The device consists of an optical system 1, discrete photoelectric converters 2 and 3 of an IT or OR element connected in series, a counting pulse generator L, a result counter 6, a measurement, a memory block 7 and an indicator 8, a poll generator 9 connected in series, a switch 10 and a pulse generator 11 shifts, the inputs of the last two elements are connected by discrete photoelectric converters 2 and 3, the outputs of which are connected to the element H OR OR 12 of the magnitude and sign of the difference and the counter 13 clock s pulses measured is denoted object chen numeral 1, apparatus operates as follows. The object 14 is projected by the optical system 1 onto the photosensitive sections of discrete photoelectric converters 2 and 3. The measurement process consists of several tacts, the number of which is controlled by the installation of 13 clock pulses in the counter. The charging packets accumulated in the photosensitive region of the 834 photoelectric converter 2 are transferred to its section shift shift register) and are scanned by applying to the converter input 2 pulses from the generator 5) polling through the switch 10. The output signal of the transducer zovatel 2 through the OR element k arrives at j shaper counting pulses, counting pulses which are formed with a small S / N ratio and counted counter 5 measuring results. Shaper 12 of the magnitude and sign of the difference determines the difference of the magnitude recorded in counter 6 of the measurement results and recorded in block 7 and equal to the result of the previous measurement. At the same time, the difference code is fed to the input of the shifter 11 of the pulse pulses, and the sign to the switch 10. As a result, the output of the polling generator E in the required phase is connected to the converter 3 and provides the offset of the recorded information in the right direction (depending on the difference code J, Then in the form of charge packets accumulated in the photosensitive region of the converter 3. It is transferred to its transfer region, where it is summed up with the charge packets of the previous measurement cycle. With the measurement cycle repeated several times The driver of the converter 3 accumulates charge packets, which provide sufficiently accurate formation of the informative fronts of the measuring signals.At the end of the vibration number of measurement cycles, the information from the register of the converter 3 is transmitted through the counter signal 13 through the pulse generator OR to the input of the counting pulse 5 and pulses from the output the latter is calculated by the counter 6 of the measurement results and through the memory block 7 is fed to the indicator 8. Thus, due to the use of Guy device shaper value and switch sign of the difference, shaper shift pulses and additional photoelectric transducer increases the measurement accuracy, because the shortened rise time of the information signal, which enables accurate measurement of, for example, low-temperature rolled at considerable transverse oscillation x and conditions of optical interference. The economic effect of using the device is 10-15 tyb; rub. in year. A photoelectric measuring device, linear dimensions of products containing a discrete photoelectric converter on charge-coupled devices, a polling generator, a counting pulse former, a meter of measurement results, a memory unit, a clock counter, and an indicator different from in order to improve the measurement accuracy, it is equipped with an additional discrete photoelectric converter on a device with a charge connection, a shear pulse generator, a switch, a block Formation of the magnitude and sign of the difference and the OR element, the OR element, the counting pulse generator, the measurement result counter, the memory unit and the indicator are connected in series, the output of the clock pulse counter is connected to the memory unit, the indicator, the measurement result counter and the shift pulse generator, the input the latter is connected to the switch, the input of the magnitude and difference difference signers are connected respectively to the measurement results counter and to the memory unit, and the outputs to the switch and pulse driver with Whig, whose outputs are connected to inputs of respective discrete photoelectric converters connected to the outputs of the last element, or a poll generator connected to the input switch and the clock counter. Sources of information taken into account during the examination 1. USSR author's certificate W 533815, cl. G U1 B 7 / Oi, 1U76. 2. US patent number 388230ii, cl. G О М (235-У2), 1У7Ь (prototype).