SU1471083A1 - Meter of number of equal-mass article - Google Patents

Abstract

To improve the accuracy of determining the number of items after installation on a digital scale 1 tare, its weight is adjusted. Objects are loaded into batches in batches. The weight change is monitored by the mass change fixing unit 3, the signal from which is fed to the dividing unit 4 and the constant memory unit 5. Unit 7 compares the signals from the 4th division unit and the 6th memory of nominal masses of individual objects. Using the block 8 for selecting the type of objects, block 10 for the memory of the nominal net mass of objects in the container, block 11 for analyzing the container filling capacity and block 12 for calculating the number of objects that is displayed on the indicator 9. 5 Il.

Description

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This invention relates to a weight measuring technique.

The purpose of the invention is accuracy.

FIG. 1 shows the block diagram of the device; in fig. 2 is a block diagram of the fixation of weight change; in FIG. 3 is a block diagram of the constant memory block in FIG. 4 is a block diagram of the memory of nominal miss of separate objects; in fig. 5 - block diagram of the choice of the type of objects.

A device for determining the number of objects of equal mass contains digital scales 3, contact sensors 2, block 3 fixing mass measurements, block 4 divisions, block 5 of memory constants, block 6 of memory nominal masses of individual objects, block 7 comparing masses of objects , block, 8 select the type of objects, indicator 9, block 10 of the memory of the nominal net mass of objects in the container, block P of the analysis of container filling and block 12 of determining the number of objects.

The weight change fixing unit 3 comprises the first comparison element 13, the mass register 14, the tension element 15.

Unit 5 of memory of constants contains the first element of the IPI 16, the first generator 17 of pulses, the first counter 18 of the survey and the permanent storage device (ROM) 19.

Block 6 of the memory of the nominal masses of individual objects contains the second element OR 20, the second pulse generator 21, the second poll counter 22, the storage device 23, the first 24 and the second 25 elements I.

The object type selection unit 8 contains a descrambler 26 counts, definition counters 27, a third element OR 28, a counter of 29 cycles, recognition, a third generator of 30 pulses, a third counter 31 of the poll, a decipher of the mountains 32 of the poll, the elements And 33, the fourth element OR 34, the recognition uniqueness evaluation element 35, the third element AND 36, the fifth 37 and the sixth 38 elements OR, the second comparison element 39, the maximum number of definitions register 40 and the object type register 41.

The unit 11 for analysis of the filling capacity of the container is implemented in the input of the reference element, and unit 12 is implemented as a division element.

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The recognition uniqueness evaluation element 35 is an element of comparison.

The device works as follows.

Empty tare is installed on the platform of digital scales 1. At the same time contact sensors 2, installed on the platform of scales 1, are activated, the signals from the outputs of which pass to the input of digital scales I and reset the readings, i.e. balancing tare mass. The operator sequentially loads the portions of a certain unknown number of objects of a type in a container, of the type of which is unknown. Object types are distinguished by the nominal mass of an individual object. It is known that n takes one of the integers r yes n, n ,, ... , Pr, ..., poo. Unit 3 registers the change in mass on scales 1 and generates a signal at the output as follows. The signal from the contact sensors 2 passes to the control input of the unit 3, allowing its operation. Next, this signal passes to the control input of the comparison element 13, allowing its operation. To the other input of the comparison element 13 from the input of block 3 passes the code of mass of objects in the container from the output of digital scales 1. At the third input of the comparison element 13, the mass code of the objects in the container passes, in the preceding comparison cycle recorded and stored by the mass register 14. In the first comparison cycle, a zero code is stored in register 14, therefore the comparison element 13 generates a control signal at the output, which arrives at the mass recording register 1 4. By this signal, the mass code of objects passing from the first input of unit 3 to the input of mass register 14 is recorded in register 14. The signal from the output of comparison element 13 is fed to the input of subtraction element 15 and enables its operation. The code from the first input of block 3 passes to the second input of the entranced element 15, and to the third input. - code output register 14 mass. The subtraction element 15 generates at the output a code for changing the mass of objects in the container, located on the platform of weight 1, 4 Q., passing to the output of block 3.

This code from the output of block 3 passes to the input of the divisible block 4 case

neither, to the input of the divider which receives the code from the output of block 5.

The code from the output of block 3 passes to the control input of block 5 of the memory constants and then through the first element OR 16, which converts this code into a pulse, to the input of the first generator 17 of pulses, to start it. The pulses from the generator 17 are fed to the input of the first polling counter 18, which generates address codes at which the constant codes are written to the constant memory ROM 19 (codes of all possible values of n, the number of objects that can be loaded into the container in one portion) . The pulse duration of the generator 17 is chosen sufficient to make a comparison of the nominal masses of individual objects stored by the unit 6

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The address codes are sequentially received from the input of the counter 18 to the input of the ROM 19 of the constants. In this case, the codes of the constants are successively passed from the output of the ROM 1 9 to the output of block 5 and further to the input of block 4 division.

Block 4 division generates the output code of the private division

   q D corresponding to the code of the mask

sy one item. This code passes to the first input of block 7 for comparing masses of objects, to the second input of which successively the codes of nominal masses of objects are output from block 6 of nominal masses of objects q. in the following way.

The code from the output of block 4 passes to the control input of block 6 and then to the input of the second element OR 20, which generates a pulse at the output that triggers the second pulse generator 21. Pulses from the output of the generator 21 pass to the input of the second counter 22 polling, which successively generates the address codes at which the output in the ROM 23 is nominal

mass masses recorded q codes. nominal masses in accordance with the type of objects (the i-th address contains the code of the mass of objects of the i-ro type), the q codes pass from the output of the ROM 23 to the second

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formed at the second input of block 7, therefore, i-ro type objects are located in the container. At the same time, unit 7 generates at the output a control signal arriving at the control input of unit 5 and further to the input of the generator 17, turning it off. This signal also passes to the control input of block 6 and further to the second input of the generator 21, disconnecting it, and to the first inputs of the first 24 and second 25 elements I. At the same time, the nominal mass codes qj from the output ROM 23 and object type i from the output of counter 22. These codes pass from the outputs of the elements 24 and 25, respectively, to the first and third outputs of block 6. The code of the type of objects from the third output of block 6 passes to the input of block 8 to select the type of objects and further to the input of the decoder 26 account. The decoder 26 generates a pulse at the output corresponding to the type of objects, which enters the input of the counter 27.1 of the number of determinations corresponding to this type. At the same time, the content of the counter 27.1 is increased by one. The impulse from the output of de-digger 26 passes through the third element of NB 28 to the input of the counter 29 recognition cycles, increasing its content by one. Counter 29 counts the total number of recognized types, and counters 27.1, ..., 27.1 ,, .., 27.К - the number of recognition facts by TimaM. It is clear that ZS S, where S; - meter readings 27. , .., 27 .K; S - counter reading 29.

Thus, the determination of the type of objects is carried out with each change in the mass of objects on scales 1, i.e. with each new portion of objects. As a result, the counters 27.1 (I 1, K) form the recognition uniqueness information. If the recognition is unique, the device sets the same type of objects in each recognition cycle, in this case only one counter 27.1 changes its display 40

50

the output of block 6 and further to its second input and its readings are equal to block 7 of the comparison of masses of objects.

If the value of the mass of the object calculated by block 4 corresponds with the specified accuracy to nominal.

NINA counters 29. If recognition is ambiguous (different types of objects are determined in the process of learning), this shows

Neither is its reading equal to the value of the INPUT counter 29. If the recognition is ambiguous (different types of objects are determined in the recognition process), in this display 5.

Neither counters 27.1 (I 1, k) are always less than the readings of counter 29. Block 8 analyzes the information on the types of objects and selects the type, the frequency of whose determination is maximum, as follows. The signal from the output of the element OR 20 is fed to the first input of the third generator 30 pulses. The generator 30 generates pulses arriving at the input of the third interrogation counter 31, which generates the codes of type 1 objects at the first output. / These codes are sequentially fed to the input of the decoder 32 polling, which generates a signal at the output corresponding to the type of objects. The signal from the output of the decoder 32. passes to the first input of the element And 33.1, to the second input of which passes the code of the definitions of the i-ro type of objects in the recognition process from the output of the counter 27.1. This code is generated at the output of the element AND 33. and passes through the fourth element OR 34 to the first input of the element 35 of the recognition uniqueness estimate, implemented as a comparison element. The second input element 35 passes the code from the output of the counter 29.- In the case of equality of the codes on the first and second inputs, the element 35 generates a signal Equal to the first output, which passes to the first input of the third element And 36, the second input of which passes the object type code with the first counter of the account 31. In this case, the code of the type of objects is fed to the first input of the fifth element OR 37 and further to the output of block 8.

This signal through the sixth element OR 38 passes to the second input of the generator 30 and turns it off.

If the recognition is ambiguous, then S {S (i 1, K), i.e. the readings of several counters are different from zero (different types of objects with different frequencies are determined) in this case, the reading of each of the counters 27.1 will be less than the readings of the counter 29.

Element 35 forms the signal Less at the second output, which is fed to the first (control) Input of the comparison element, allowing its operation. To the second (informational) input of element 39 passes through the element OR 34 the code of the number of definitions .i-ro of the c-output type of the counter 27.1, (1 - 1, K). On the third (informational710836

yn) input of element 39 passes the code of the maximum number of definitions from the code of register 40 of the maximum g number of definitions. In the first comparison cycle in register 40, zero is recorded, therefore element 39 generates a control signal at the output (signal more) arriving at the first input of register 40, and the code of definitions of the i-ro type of objects from the output of element 33.1 passing to the second input of register 40 is written to this register.

5 The signal from the output of element 39 passes to the first (controlling) input of the register of 41 types of objects, the second (Shforming) input of which passes the code of the type of objects from the first

0 is the output of the polling counter 31, and is written to register 41. After polling all types, the counter 31 generates a control signal at the second output corresponding to the transfer signal in

5 higher order, disconnecting the generator 30. On this signal, coming to the third input (read input) of the register 41, the object type code goes to the second input of the 0 element 0, OR 37 and then to the output of the block 8. With the arrival of a new object type code i by the signal from the output of the element OR 28, which is postponed to the third input of the register 40, the register 40 is zeroed.

Thus, with each new portion of the objects entering the scales 1, the recognition result is improved and the type of objects selected

0 the frequency of determining which in this recognition process is maximum.

The code of the type of objects from the output of block 8 passes to the input of the indicator 9 and

5 to the input of block 10 of the memory of the nominal net mass of objects in the container. Block

10 implemented in the ROM, in which the addresses corresponding to the types of objects recorded codes nominal

0 masses of packages of these objects (the mass that should be shipped to the container). The code of the type of objects passes to the address input of block 1 O. At the same time, at the output of block 1 O,

5 code of the nominal mass of packaging in containers, which enters the input block

11 analysis of the filling capacity of the container, implemented as an element of comparison. To the second input of block I1 pro5

The code for the total weight of objects loaded onto the weighing platform 1 is displayed. In case of equality of the codes being compared, the block 11 generates a control signal at the output, which is fed to the control input of the block 1 2 for adding the number of objects and to the control input of the indicator 9, allowing them to work.

At the same time, a signal arrives at the second input of the indicator and the type of objects is displayed as a decimal code.

Block 12 is a division element. At one input: (divider input) a code of the nominal mass of objects q. Is generated. It comes from the output of block 6. To the other input (input divisible) of block 12, the code of the total mass of objects from the scale output 1 is received. The dividing number corresponds to the number of objects in the container, and is fed to the input of the indicator 13 and displayed on it as a decimal code.

The operation of the device ends there. Packaging is formed. After this, the installation is shipped and the next container, etc. is placed on the scale 1.

The number of constants recorded in block 5 is determined by the nature of the loading of objects in the container. Thus, when forming trays filled with bread products, the number of simultaneously loaded products may be 1, 2, 3, less often 4.

Claims (1)

Invention Formula A device for determining the number of objects of equal weight, containing digital scales connected to the first inputs of the block for fixing the change in mass and the block for determining the number of objects, the division unit, the inputs which are connected to the outputs of the fixing block of changes in the mass and memory block of constants, and the output to the first inputs of the block for comparing the masses of objects and the memory block of nominal masses of individual objects, the first output of which is connected to the second input of the block for determining the number of objects, the second output - to the second input of the object mass comparison unit, the output of which is connected to the second input of the memory block of nominal masses of individual objects, and the indicator, the first input 5 of which is connected to the output of the unit determining the number of objects, which is due to the fact that, in order to improve accuracy, the 0 Hbie sensors installed on the scales, the unit for selecting the type of objects, the storage unit of the nominal net mass of objects in the container and the unit for analyzing the container fullness are entered into it, the output of the contact sensors is connected to the input of a digital scale and to the second input of the block of mass change fixation, the output of which is connected to the first input of the memory block of constants, the second input of which is connected to the output 0 of the object mass comparison unit ti denomination-- individual masses are connected to the input of the object type selection unit, the output of the nominal net weight of objects in the container connected to the 5th input, and the second indicator input, the third input of which and the third input of the object number determination unit are connected to the output of the analysis unit the filling capacity of the container, the first input of the n-connected to the output of the storage unit of the nominal net mass of objects in the container, and the second input to the output of the digit-. out weights. 0U9.fl FIG. five