SU1259307A2 - Device for counting piece items which are transferred by conveyer - Google Patents

Abstract

The invention relates to the field of measurement technology and can be used in public households where control of piece products is necessary. The aim of the invention is to increase the accuracy of the device. The device contains photo sensors, pulse counters, AND elements, registers, AND element blocks, a single vibrator, OR elements, an inverter, a conveyor speed sensor, triggers, an object counter, a signaling device, and a driver. 1 il. (L C th JV O9 O sl

Description

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The invention relates to a measurement technique, namely, photoelectronic devices for counting piece objects, is intended for counting piece objects on high-capacity lines, can be used in national enterprises where control of piece products is necessary, and is an improvement of the device according to the author. St. No. 1161974.

The purpose of the invention is to improve the accuracy of the account by eliminating the loss of the account during device setup.

The drawing shows the block diagram of the device.

The device contains the first photo sensor 1, the first counter 2 pulses, the first element And 3, the first pe30

the 4, the first block 5 of the elements And, the one-shot 6, the second element And 7, the first element OR 8, the second photo sensor 9, the third element And 10, the inverter 1 1, the conveyor speed sensor 12, the fourth element And 13, the second register 14, the second block is 15 elements And, the second counter is 16 pulses, the fifth element. And 17, the first trigger 18, the second element OR 19, the counter of 20 items, the detector 21, the second trigger 22, the driver 23 signals, the third element OR 24 and the sixth element And 25.

A conveyor speed sensor 12 is mounted on the shaft of one of the conveyor rollers and is an electromechanical pulse shaper (e.g., a contact-cam mechanism), the frequency of which is proportional to the speed of the conveyor. Blocks 5 and 15 are made on standard AND and OR elements, the output signal appears when the signals coincide on one. Noah pairs of inputs, blocks can be implemented, for example, on the elements of the 155 series.

The signal conditioner 23 represents a set of four keys.

20 world leader 23 and the outputs of the remaining elements of the signal corresponds to

O. When the conveyor moves, the conveyor from the speed sensor 12 of the conveyor receives pulses, the frequency of which is proportional to the speed of the conveyor. The signal from the second output of the former 23 prepares elements 13, 10 and 25 for operation.

When the first photo sensor 1 overlaps with the object of counting, the signal c does not allow the counting of pulses by counter 2, but the counting does not occur, since AND 17 is closed (on its second

35 input signal corresponding to the logical O), and opens the element And 10, resulting in impulses from the sensor 12 through the element And 10 arrive at the counting input of the first

40 of register 4, which counts the pulses until the second photo sensor 9 overlaps, when its output will generate a signal corresponding to the logical

45 This signal is fed to the input and to the driver 11, at the output of which a signal corresponding to the gigantic O is formed, as a result of which the And 10 element is closed. Thus

(not shown), which form a single register 4 counts the number of signals at the first output for resetting registers 4 and T4 to the initial state, at the second output for performing the Correction mode, at the third output for resetting them to the initial state of triggers 18 and 22 after an attempt to falsify the account and conduct the Correction mode and

pulses, proportional to the time of movement of the object from the first 1 to the second 9 photosensor. The signal c in the photoelectric sensor 9 at the same time, the h 55 cut element OR 8 enters the net input of the first trigger 18, which goes into one state and opens the element And 7, but the pulses

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the fourth output is for running the Count mode.

The device works as follows.

5 After installation of the device on the conveyor or when changing the size of the objects of the account, the Correction mode is carried out. Before the start of correction, the operator uses the keys to generate pulse signals, respectively

logical 1 on per

the first and third outputs of the driver 23, which leads to the reset to the initial state of the triggers 18 and 22 and

registers 4 and 14. In this mode

A logical 1 signal is present at the output of the second trigger 22, the output of the inverter 11 and the second output of the driver 23, and on the other outputs of the driver 23 and the outputs of the remaining elements, the signal corresponds to a logical O.

The belt from the sensor 12 of the speed of movement of the conveyor receives pulses whose frequency is proportional to the speed of movement of the conveyor. The signal from the second output of the imaging unit 23 prepares for operation elements And 13, 10 and 25.

When the first photosensor 1 overlaps with the counting object, the signal from it allows the pulses to be counted by counter 2, but the counting does not occur, since AND 17 is closed (on its second

the input signal corresponding to the logical O), and opens the element And 10, resulting in the pulses from the sensor 12 through the element And 10 arrive at the counting input of the first

register 4, which counts the pulses until the second photo sensor 9 overlaps, when a signal corresponding to logical 1 is generated at its output.

This signal is fed to the input of the inverter 11, at the output of which a signal corresponding to logical O is formed, as a result of which the element 10 is closed. In this way.

register 4 counts the number

register 4 counts the number

pulses, proportional to the time of movement of the object from the first 1 to the second 9 photosensor. The signal from the second photo sensor 9 simultaneously through the element OR 8 is fed to the counting input of the first trigger 18, which goes into a single state and opens element And 7, but the pulses

. the second counter 16 is not received, since the element And 17 is closed (at the fourth output of the imaging unit 23, the signal corresponding to the logical O). In addition, the signal from the second photo sensor 9 opens the elements AND 1 and AND 25, and the pulses from the sensor 12 through the element I 13 arrive at the counting input of the second register 14, which counts the number of pulses proportional to the time of the overlap of the second photo sensor 9, those. the sizes of the counting object, and the pulse from the second photo sensor 9 through the elements AND 25 and OR 24 is fed to the counter 20 items, the counting is done, and to the input Reset the second pulse counter, confirming its initial state. The signals from the outputs of registers 4 and 14 open the corresponding inputs of the elements in blocks 5 and 15. This completes the Correction mode.

Then the operator using the keys on the shaper 23 generates a signal corresponding to the logical 1 at the third output of the shaper 23, and resets through the OR 19 element of the first trigger 18. The flip-flop 22 remains in the initial state. After that, the device is switched to

In this mode, at the initial moment, the signal corresponding to logic 1 is present at the fourth output of the imaging unit 23, at the output of the second trigger 22 and at the corresponding outputs of registers 4 and 14. At the other outputs of the imaging unit 23 and at the outputs of the other elements, the signal corresponds to the logical ABOUT

The subject of counting, moving the conveyor, overlaps the first photo sensor 1, the signal from which is the trigger pulse for counter 2. No. 1 pulses from sensor 12, through element 11, are sent to counter count input 2.-When counting by counter 2, the number of pulses equal to the quality of the pulses, counted by the first register 4, the signal through the corresponding element And block 5 starts the distributor 6. At the output of the last, a pulse is formed corresponding to logical 1, which resets to the initial state of the counter 2 pulse and T in pos paet to the first inputs of AND gates 3

and OR 8. The time for filling the pulse counter with pulses is determined. the speed of movement of the conveyor and corresponds to the time required for advancing the counting object of the first photo sensor 1 to the second photo sensor 9. With further advancement of the counting object, the first photo sensor 1 returns to the initial state. Then the second photo sensor 9 overlaps, and the signals from its output go simultaneously to the inputs of the AND 13 and 25 elements and through the inverto 11 to the input of the AND 10 element, which remain closed, since the signal at the second output of the imaging unit 23 in this mode corresponds to the logical O, and to the second inputs of the element OR 8, the output pulse of which transfers the first trigger 18 to the logical state, and the element 3.

The trigger 18 opens element 7, through which the sensor 12 through element 17 begins to receive pulses at the counting input of counter 16. The filling time of the latter is determined by the overlap time of the second photo sensor 9 and significantly less than the time it takes to fill counter 2. When the second photo sensor 9 overlaps a single pulse appears at the output of the one-shot 6, and a counting pulse arrives at the counter 20. At the same time, the same pulse returns to its initial state through the element OR 19 the first trigger 18 (as a result of which the counting is stopped by the second counter 16) and the second counter 16. If during the time for which the second photosensor 9 overlaps ,. a pulse does not appear at the output of the one-shot 6, then when the counter 16 counts the number of pulses equal to the number counted by the second register 14, the signal goes through the corresponding element AND of the block 15 to the counting input of the second flip-flop 22, which turns on the indicator 21 and prohibits the triggering the counter 20, by removing the signal from the third input of the element I 3. The same result also comes from the arrival of a pulse from the one-shot 6 in the absence of a signal from the output of the second photo sensor 9.

The return of the first 18 and second 22 triggers and alarm 21 in

The initial state in this case is carried out from shaper 23 after determining the cause that led to the falsification of the account. In this case, the signal corresponding to logical 1 is formed by the Reset key at the third output of the imaging unit 23, the Alarm 2.1 and the imaging unit 23 can be structurally manufactured outside the device itself, sealed and receive power from an independent source. The signal from the detector 21 can also be used to stop the conveyor. After passing through the counting of the second photo sensor 9, the device returns to its original state. With simultaneous overlapping of both photosensors 1 and 9, the output of the element OR 8 is a signal from which the first trigger 18 is triggered. It is in this state the time during which the counter of 2 pulses is filled until it is equal to the number of pulses counted by the second the shift register 14, after which the trigger 22 is triggered, which turns on the alarm 21,

With a constant overlap of the first photo sensor 1, a pulse counter 2 is started, which counts the pulses from sensor 12 until it equals the number of pulses counted by the first register 4, after which the signal from the single vibrator 6 resets the counter 2 to the initial state and through the element OR 8 switches the first the trigger 18 is in the logical 1 state. Since the second photo sensor 9 is not blocked, the signal for resetting does not appear at the output of the AND 3 element. As a result, after the second pulse counter 16 counts the number of pulses equal to that stored in the second register 14, the signal from the block 15 triggers 22 switches on and turns on the warning lamp 21. When the second photosensor 9 constantly overlaps, the first trigger 1.8 from its signal also triggers defined as in the previous case, the second register 14 includes an annunciator 21, since

during this time, the signal from the output of the single-vibrator is not formed.

During the reverse advancement of the counting objects, the second photo sensor 9 overlaps first and the first trigger 18 triggers, which is in this state the time during which the object moves until the first photo sensor overlaps, the first counter 2 is filled, and the single vibrator 6 triggers. the second register 14. Therefore, in this case, the alarm 21 is triggered.

When the beams alternately overlap with a speed greater or less than the speed of the conveyor, the first trigger 18 does not have time to return to the initial state, and, therefore, the alarm 21 is triggered. In an attempt to turn off the power from the device at the output of the second trigger 22 there will be no signal corresponding to logical 1, therefore, the signaling device and the torus 21 will also work.

In addition, the use of the device allows an increase in the counting accuracy, since errors are eliminated due to an incorrectly chosen installation size between the photosensors and the loss of the counting of objects during tuning.

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Claims (1)

Invention Formula Device for counting pieces transported by conveyor on auth. No. 1161974, which is due to the fact that, in order to improve accuracy, the third OR element and the sixth AND element, whose inputs are connected to the output of the second photo sensor and the second output of the signal conditioner, the output of the sixth element AND is connected to the first input of the third element OR, the second input of which is connected to the output of the first element AND, and the output to the input of the object counter and the reset input of the second pulse counter. Editor N. Yatsola Compiled by N. Vaganova Tehred M. Khodanich Proofreader A. Zimokosov Order 5125/49 Circulation 671 Subscription VNIIPI USSR State Committee for inventions and discoveries 113035, Moscow, Zh-35, Raushsk nab., 4/5 Production and printing company, Uzhgorod, st. Project, 4