SU1709361A2 - Device for reading data from oscilloscope screen - Google Patents

Abstract

The invention relates to the field of automation and can be used in measurement information recording systems when calibrating and testing universal oscilloscopes. The purpose of the invention is to improve the accuracy of the device. A positive effect is achieved by introducing into the device a second additional line of point photodetectors and a selection unit containing optoelectronic logic elements I. 2 ill.

Description

The invention relates to the field of automation and can be used in the registration systems of measuring information when checking and testing universal oscilloscopes and is an improvement of the basic invention according to the author. St. No. 1566387.

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

FIG. 1 shows a block diagram of the device, FIG. 2 is a diagram of the second additional line of the photodetector and the selection unit.

The device contains (Fig. 1) a second additional line 1 point photodetectors, a selection unit 2, a first additional line 3 photoreceptions, a cove, a signal level converter 4, a main line 5 photodetectors and 6 coding.

Line 1 (Fig. 2) consists of a blocking photodetector 7 and (t + 1) point photodetectors 8.

 Selection block 2 (Fig. 2) contains (m + 1 opto-electronic logic elements AND 9. Fig. 2 also shows the direct 10 and inverse 1.1 inputs of the elements AND 9, the reference photodetector 12 and the photodetectors 13 of the first additional ruler. The beam line is also shown oscilloscope (14).

The device works as follows. The optical input signal from the lines representing the process is projected onto a line of 1 point photodetectors 8. Since the diameter of the photodetectors is several times smaller than the width of the light line, this line (in Fig. 2 one line 14 out of two is shown, input signals) simultaneously covers several photodetectors, for example, photodetectors 8.1 .., 8.4, the output of which is fed to the inputs of the corresponding elements I. If the input does not receive the input 11.1 of element 9.1 (blocking IR 7 is not lighted), then, although input lines to one line beam 1 zasvechiveet four photodetector output from block

selection, the output signal is fed only to the input of the photodetector 12, corresponding to the lower Crack) of this wide line of the beam of the oscilloscope. If the light from the line covers the blocking photo receiver 7, there is no signal at the output of the selection unit.

Thus, the reading accuracy in the device is increased by a factor of 1, where f is the width of the line of the beam, d is the diameter of the point photodetector.

Claims (1)

The invention is a device for reading information from an oscilloscope screen on the author. Ev. No. 1566387, characterized in that, in order to improve the accuracy of the device, it contains a second additional line of t + 1 point-based photointermechanicals and one a blocking photodetector, the inputs of which are the inputs of the device, and a selection unit containing t + 1 optoelectronic logic elements, and outputs which are connected respectively to the inputs of the first additional line receivers, the direct inputs of the optoelectronic logic elements And the selection unit are connected respectively to the outputs of the point photodetectors of the second additional line, the inverse input of the first optoelectronic logic element And the selection unit is connected to the output of the blocking photodetector, the output is l-rp ( .,., m) point photodetector of the second additional ruler is connected to the inverse input (1 + 1) of the optoelectronic logic element AND of the selection unit and. 1 Jf m No  ig ws .z 13.1 10.1, to P1