SU1580410A1 - Device for selection of objects images - Google Patents

Abstract

The invention relates to automation, in particular to a device for selecting images of objects, and can be used in technical vision systems. The purpose of the invention is to increase the speed of the device and is achieved by introducing a matrix of cells for selecting the elements of the image of objects and a control trigger. 1 hp f-ly, 1 ill.

Description

The invention relates to automation, in particular, to a device for the selection of images of objects, and can be used in technical vision systems.

The purpose of the invention is to increase the speed of the device.

The drawing shows the block diagram of the device.

The device contains a matrix of 1 cell selection of image elements and block 2 control. The cell selection elements of the image contains a photocell 3, the element is NOT 4, the first 5 and the second 6 elements are AND, the trigger 7, the element OR 8 and the element IS-HE 9.

The control unit contains the trigger 10, the pulse generator 11, the first 12 and the second 13 AND elements and the HE element 14. The drawing also shows the inputs 15-18 of the device.

The device works as follows.

The 18 inputs of all cells are given a signal O. On the remaining free

the inputs of the first 15 and last columns and rows (due to the absence of adjacent cells) the signal O is given.

The image of the object is projected onto the matrix of photo cells 3. Signals 1 appear at the outputs of those photo cells 3, and the signal O appears at the outputs of the other photo cells 3. At input 16 (Start input), a pulse is applied that sets all the triggers 7 cells and trigger 10 of block 2 to position 1. During the pulse start from the output of the element HE 14, the second input of the first element I 12 is sent to the signal O, which prohibits the passage of pulses from the generator of 11 pulses to the inputs of the cells.

If signals 1 are received at the inputs of the 15 cells from adjacent cells, then the signal O is received at the output of the NAND 9 element, which prohibits the input of signals from other inputs of the And 5 and 6 elements, i.e. the input of the trigger 7 receives the signal O.

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If at least one of the inputs 15 receives the signal O, then the signal 1, coming from the output of the element AND-NOT 9 to the inputs of the elements 5 and 6, allows the passage of signals from the other inputs. Depending on the signal that is present at the output of the photocell 3, a permission signal is received at the input of element 5 or through element 4 at the input of element 6. From the decay of signal 1, the signal O arriving at the input of trigger 7 records it.

In block 2, depending on the state of the trigger 10, the passage from the generator 11 pulses is allowed through the element 12 and then the element 13.

At the first stage with the arrival of the signal. The start-up to the input 16 of the block 2 impulses of the generator 11 pulses flow through elements 12 and 6 and 8 to the inputs of triggers 7, triggers 7 of the first and last rows of cells of the cells are twisted with the first pulse, second triggers and the penultimate rows and columns of cells, etc. This process of zeroing the triggers 7 with the arrival of pulses from the generator 11 pulses, like a wave, rushes towards the center of the matrix and stops when it reaches the outer contour of the image. Thus, after the first stage, a single image of a multi-link object is obtained.

At the second stage, input 17, i.e. A pulse is applied to the input of the trigger 10, which switches it to the state O. In this case, the pulses from the generator output 11 pulses through the elements AND 1 3 and 5 and OR 8 enter the input of the trigger 7 and zero it. A wave of zeroing triggers 7 cells rises to the center of the image and stops, meeting the second inner contour of the image. Thus, at the second stage, an image of the internal opening of the object is obtained.

If there are other objects inside the hole, then by applying a pulse to input 17, you can get a single image of the internal object, this will be the third stage, and so on.

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Claims (2)

Claim 1. Device for selection of images of objects, containing the first element AND, one input of which is connected to the pulse generator, the other connected to the output of the element NOT, and the second element AND, distinguishing from the fact that, in order to improve the speed of the device it contains a trigger, the signal input of which is the first control input of the device, the synchronization input is the synchronization input of the device, the forward output of the trigger is connected to the third input of the first AND element, and the inverse output is connected one input of the second element And, the other input of which is connected to the output of the pulse generator, and the matrix of cells for selecting image elements, whose information inputs are connected to the outputs of the corresponding adjacent cells of the matrix, the first clock inputs of which are connected to the output of the first element And, the second clock inputs are connected to the output the second element And the signal inputs are connected to the control input of the device, the control inputs are the second control input of the device, and the outputs are informational outputs device moves. 2. The device according to claim 1, characterized in that the cell of the selection of image elements contains a photocell, the output of which is connected to one input of the first element AND and to the input of the inverter, the element AND-NOT, whose inputs are informational inputs of the cell, and the output is connected to the second input of the first element AND, the third input of which is the second clock input of the cell, and the output is connected to one input of the OR element, the second element is AND, one input of which is the first clock input of the cell, the other inputs are connected to the outputs of the elements -NOT and NOT, and the output is connected to another input of the OR element, and the trigger, the synchronizing input of which is connected to the output of the OR element, the information input is the control input of the cell, the signal input is the signal input of the cell, and the output is the information output of the cell .