SU590780A1

SU590780A1 - Graphic information readout device

Info

Publication number: SU590780A1
Application number: SU762410163A
Authority: SU
Inventors: Валерий Павлович Анциферов; Александр Григорьевич Золотов; Генрих Иванович Курахтанов; Владимир Ильич Латышев; Борис Павлович Лосев; Илья Ильич Румянцев; Владимир Федорович Тараев
Original assignee: Предприятие П/Я Г-4677
Priority date: 1976-10-06
Filing date: 1976-10-06
Publication date: 1978-01-30

Description

(54) УСТРОЙСТВО ДЛЯ СЧИТЫВАНИЯ ГРАФИЧЕСКОЙ(54) DEVICE FOR READING GRAPHIC

ИНФОРМАЦИИINFORMATION

1one

Изобретение относитс к автоматике и вычислительной технике, в частности к устройствам дл считывани графической информации .The invention relates to automation and computing, in particular to devices for reading graphic information.

Известны устройства дл считывани графической информации.Apparatuses for reading graphic information are known.

Одно из них содержит планшет с датчиками координат, соединенными с линейками фотодиодов и осветительных лам-почек, разделенными кодовыми масками, блок управлени , подключенный к датчикам координат и выходному блоку 1.One of them contains a tablet with coordinate sensors connected to photodiode lines and illuminated lam-buds separated by code masks, a control unit connected to the coordinate sensors and the output block 1.

Недостаток этого устройства состоит в низкой точности считывани координат, обусловленный деформацией носител информации. The disadvantage of this device is the low accuracy of reading the coordinates, due to the deformation of the information carrier.

Другое известное устройство, наиболее близкое к изобретению, содержит планшет с датчиками координат, входы которых подключены к блоку питани , соединенному через аналого-цифровой преобразователь с блоком регистрации данных, и усилители, подключенные к блокам фильтрации 2.Another known device closest to the invention comprises a tablet with coordinate sensors, the inputs of which are connected to a power unit connected via an analog-digital converter with a data recording unit, and amplifiers connected to filtering units 2.

Его недостаток также заключаетс в невысокой точности считывани графической информации из-за деформации ее носител . Its disadvantage also lies in the low accuracy of reading graphic information due to the deformation of its carrier.

Цель изобретени - повышение точности устройства.The purpose of the invention is to improve the accuracy of the device.

Это достигаетс тем, что в устройство введены сумматоры, входы каждого из которых соединены с соответствующими датчиками координат и блоками фильтрации, а выход подключен к аналого-цифровому преобразователю , триггеры коррекции по каждой из координат , соединенные с блоком питани и с соответствующими сумматором и усилителем, и блоки задани масштаба деформации носител , подключенные к усилител м.This is achieved by adding adders to the device, the inputs of each of which are connected to the corresponding coordinate sensors and filtering units, and the output is connected to the analog-to-digital converter, correction triggers for each of the coordinates connected to the power supply and with the corresponding adder and amplifier, and blocks for setting the deformation scale of the carrier connected to amplifiers.

На чертеже представлена структурна схема устройства.The drawing shows a block diagram of the device.

Устройство содержит планшет 1 с датчиками 2 и 3 координат, блок 4 питани , аналого-цифровой преобразователь 5, подключенный к блоку 6 регистрации (данных), триггеры 7, 8 коррекции по каждой из координат , усилители 9, 10, блоки 11, 12 задани масштаба деформации носител , блоки 13, 14 фильтрации, сумматоры 15, 16.The device contains a tablet 1 with sensors 2 and 3 coordinates, power supply unit 4, analog-digital converter 5 connected to recording unit 6 (data), correction triggers 7, 8 for each of the coordinates, amplifiers 9, 10, sets 11, 12 scale deformation of the carrier, blocks 13, 14 filtering, adders 15, 16.

Работает устройство следующим образом.The device works as follows.

Claims

The coded drawing is imposed on the tablet I, and their coordinate axes are combined. Due to the deformation of the carrier (drawing paper), the scales of the X and Y coordinate axes of the drawing are different from the nominal ones. But each of the axes of the drawing is used to measure the deformation coefficient of the carrier, and the corresponding deformation values are set on the media deformation scale blocks 11, 12. The viewfinder is aligned with the encoded point of the drawing, and the sensors 2 and 3 of the coordinates associated with the crosshair of the tablet 1 occupy positions proportional to the coordinates of the viewfinder. The output signals of the sensors of the coordinates through the adders 15 and 16 are supplied to the triggers 7, the corrections, to the second input of which they receive the reference signal from the power supply unit 4. At the outputs of the correction triggers, rectangular pulses are generated, the duration of which is proportional to the coordinates of the sight, and the frequency corresponds to the frequency of the power source. The amplitudes of these pulses are mashtabulated by amplifiers 9, 10 in accordance with the output signals of blocks I and 12. The output signals of amplifiers 9, 10 are smoothed by blocks 13, 14 and on summers 15, 16 are added to the output signals of the coordinate sensors. As a result, signals are generated that are proportional to the coordinates of the read point at the nominal scale of the drawing. Analog-to-digital Converter 5 converts it into a digital code, which 20 enters the block 6 of the data recording. The introduction of new blocks and new constructive links made it possible to increase the accuracy of reading graphic information by 1.4–1.6 times in comparison with the known device. Claims of the invention A device for reading graphic information containing a tablet with coordinate sensors, whose inputs are connected to a power supply unit connected via an analog-digital converter to a recording unit, amplifiers connected to filtering blocks, characterized in that. in order to improve the accuracy of the device, it contains adders, the inputs of each of which are connected to the corresponding coordinate sensors and filtering units, and the output is connected to the analog-to-digital converter, correction triggers for each of the coordinates connected to the power supply and with the corresponding adder and amplifier, and blocks for setting the deformation scale of the carrier connected to amplifiers. Information sources. Irinae into account when examining 1. US Patent No. 3567950, cl. 250-219, publ. 1971.

2. US patent number 3500379, cl. 340-347, publ. 1970.