RU2406141C1 - Device for inventory control of storages - Google Patents

Abstract

FIELD: information technology.

SUBSTANCE: device has a reader with two control numbers, a control unit having switching and indication elements, a register for converting a signal serial code into a parallel code, a monostable multivibrator, a comprator, two OR circuits, two delay elements, three rectifiers, a shift register, two memory units, two flip flops and a memory element.

EFFECT: broader functionalities and field of use of the device.

1 dwg

Description

The technical solution relates to computing, in particular to control devices. It can be used in the inventory of property located in places of storage (libraries, museums, warehouses, etc.).

In a number of areas of application of control tools, the transition from the use of barcodes to the introduction of radio frequency identification (RFID) technology is being carried out. RFID tools include [1] electronic tags (chips) placed on controlled items, and tag code readers (readers), for example RA 900-1-01 (www.aipha1.ru) or RMA 900-9 (www.chirti .ru). To obtain data on the subject of control, the output signal of the reader must be processed. As a processing tool is considered a universal computer, coupled with a reader. Interfacing is provided by a wired line, which imposes a spatial limitation on the use of such a control system. Warehouse equipment for connecting a reader is associated with significant costs. It is also known about the possibility of creating a wireless connection between the reader and the computer, but the technical solutions for implementing this possibility are limited by the range and noise immunity.

Known devices [2, 3, 4], providing control over the presence and movement of material values. The disadvantage of the device [2] is the lack of a mechanism for synchronizing the processes of reading and comparing data. The presence of multiple scanners and a single comparison unit requires the sequential receipt of control data from the scanners in the comparison unit, consistent with the receipt of data from the memory unit of the permitted values of the codes of controlled items. With the simultaneous receipt of signals from several scanners, the comparison unit will not provide the implementation of the comparison function, and the device itself will not provide control functions.

The main disadvantage of the device [4] and the device [3], which is part of it in its entirety, is the absence in the data processing unit 1 of a mechanism for coordinating the joint work of generators 2 and 3. But only synchronous and common mode operation of these generators can ensure that the output signal and, thus, the operability of these devices.

Devices are also known [5, 6]. Each of them includes a number of functional elements similar to the elements included in the composition of the claimed invention. The functionality of the devices [5, 6] is limited by determining the optimal service life of the facilities of technical complexes.

The closest in technical essence to the claimed device are devices [7, 8]. These devices in terms of the number of distinguishing features (functional elements and relationships between them) are equivalent in comparison with the claimed technical solution. In this regard, a device [8] is considered as a prototype, containing a memory block, keys, delay elements, memory elements, comparators, a subtractor, a multivibrator, an OR element, a nonlinearity block, an integrator, adders, multiplication blocks, division blocks, a trigger, and a timer . The disadvantage of the device [8], as well as the device [7], are limited functionality and scope.

The aim of the proposed technical solution is to expand the functionality and scope of the device. The goal is achieved by introducing functional elements into the device that allow you to identify the objects of control and evaluate in an automated mode the compliance of their actual composition and storage location with credentials.

Control of items and their storage locations is based on the use of RFID technology. Monitored places and items of storage are equipped with appropriate tags - chips, which ensures the formation of the address and subject parts of the control data. The degree of detail of the address part depends on the structure of the storage facilities (building-room-individual place, etc.). Control items (museum exhibits, books, unpacked boxes with known contents, etc.) are equipped with individual chips that allow generating control data on the presence of stored items. The combination of the address and subject parts of the control data allows you to identify all possible cases of compliance and non-compliance with their credentials.

Control can be carried out hardware using the proposed device, a diagram of which is shown in the drawing. The device contains a reader 1, a set of two control chips 2, one of which corresponds to the maximum possible number (max), and the second to the minimum possible number (min), not used to indicate objects and storage locations; the control unit 3, which includes a toggle switch 4, the “Read” button 5, the “Object taken into account” indicator 6, the “Non-compliance” indicator 7 and the “End” indicator 24, register 8, the multivibrator 9 operating in standby mode, the comparator 10, the first OR circuit 11, first delay element 12, first 13, second 14 and third 15 gates (equivalent keys of the prototype), second delay element 16, shift register 17, first memory block 18, memory element 19, second OR circuit 20 and second memory block 21, first 22 and second 23 triggers.

Preparing the device for work

Before the operator-controller enters the control route, the following must be done.

1. The memory blocks 18 and 21 are reset, the shift register 17 is set to zero. To do this, from the second input of the device to the second inputs of the shift register 17, the first 18 and second 21 memory blocks, an initial setting signal is supplied.

2. In the first memory block 18 from the third input of the device from the database of the enterprise to which the objects of control belong, the chip numbers of places and storage items assigned for verification are entered in accordance with the control route.

3. In the memory element 19 from the fourth input of the device is written the code of the symbol of mismatch, used as a label when the number of the controlled item does not match the account.

4. Toggle switch 4 is set to the "Enabled" position. Control is carried out by sequentially checking places and objects of storage located on the control route.

The operation of the device is similar to both checking the address and the subject part. Therefore, the following description of his work is limited to the consideration of the process of monitoring storage items.

The device operates as follows.

The operator-controller, having brought reader 1 into the zone of control of the item, by pressing the button 5 turns on the multivibrator 9 and reader 1. The single pulse from the output of the multivibrator 9 goes directly to the second input of register 8, making it ready to receive control data from reader 1 (to the second inputs of the first 22 and second 23 triggers, translating them to the zero state), as well as to the input of the shift register 17, switching it to polling the next cell of the first memory block 18. Note that each of the n outputs of the shift register 17 corresponds to there is one, well-defined, memory cell block 18, and (n + 1) the output is connected to the “End” indicator 24 of the control unit 3. The account number of the item being monitored from the first memory unit 18 is supplied with a parallel code to the second input of the comparator 10. At that at the same time, the signal from the chip of the controlled object from the output of reader 1 is supplied by a serial code to the first input of register 8 and to the information inputs of gates 13, 14, 15. In register 8, the serial code is converted to parallel. The output signal of the multivibrator 9, delayed by the first delay element 12, is supplied to the third input of the register 8. By this signal, control data from the register 8 are transmitted to the first input of the comparator 10. In the comparator 10, the accounting and control numbers of the stored item are compared. The following options are possible.

1. The numbers match. At the first output of the comparator 10, a control signal appears, which is transmitted to the control input of the third gate 15 and to the first input of the first trigger 22, translating the trigger into a single state. The output signal of the trigger 22 includes the indicator "Object is taken into account" 6. Through the open valve 15 and the second circuit OR 20, the read chip code from the output of the reader 1 is sent to the registration in the second memory block 21.

2. The numbers did not match. This corresponds to the situation when another item equipped with a chip is accidentally or intentionally placed at a given storage location. In this case, the control signal will appear on the second or third output of the comparator 10 depending on the ratio of the absolute values of the accounting and control numbers. The output signal of the comparator 10 opens the first 13 (or second 14) valve, allowing the chip code from the reader 1 to pass through the second OR circuit 20 to the second memory block 21. In addition, the output signal of the comparator 10, passing through the first OR circuit 11, leads the second trigger 23 to a single state, as a result of which the “Mismatch” indicator turns on 7. The output signal of the first OR circuit 11 is transmitted through the second delay element 16 to the second input of the memory element 19, providing reading and transmission through the second OR circuit 20 to the second memory block 21 to An ode to a credential mismatch symbol.

3. The storage item is not equipped with a chip, which corresponds to the accidental or deliberate placement of another item at a given place, in particular - replacing the original with an unaccounted copy. In this case, the control signal does not come from the reader 1 to the comparator 10, there is no control signal at all outputs of the comparator 10, indicators 6 and 7 do not turn on. To register the presence of this item, the operator-controller puts the toggle switch 4 in the “Off” position, breaking the start circuit of the multivibrator 9. At the second input of the comparator 10, the account code set for the last start of the multivibrator 10 is supported. The operator-controller, putting the control in the reader reading zone chip 2 "max", reads its code. After the comparison operation is completed, the control signal appears on the second output of the comparator 10 and opens the first gate 13. In this regard, the control chip code 2 "max" from the reader 1 is sequentially through the gate 13 and the second OR 20 circuit to the second memory block 21. Inconsistency symbol as in the second case considered, from the memory element 19 will be transferred to the second memory unit 21. The indicator 7 will display the execution of the control operation.

4. The storage item is missing as a result of theft or planned seizure without due, timely introduction of appropriate correction in the enterprise database. This fact is fixed in the same way as in the previous case. The only difference is that to indicate the absence of an object at the place of control, a control chip 2 "min" is used. The result of comparing the account number with the chip number "min" will be reflected in the appearance of a control signal on the third output of the comparator 10, which will open the second valve 14, which will ensure the passage of the code "min" from the reader 1 to the memory unit 21. Display of the signal "mismatch" and registration of the mismatch symbol carried out in the same way as in the third option considered.

At the end of the control according to the third and fourth options, the toggle switch 4 must be moved to the “On” position to prepare the device for checking the next position and storage item.

When the shift register 17 is switched to (n + 1) discharge, its output signal includes the “End” indicator 24 of the control unit 3, which means the completion of the interrogation of all memory cells of the unit 18, the monitoring is over.

This completes the operation of the device.

The output of the second memory block 21 provides the reading of the control results for their analysis and updating the content of the enterprise database.

The positive effect that the proposed technical solution provides is that the device allows you to control the composition and location of storage items, evaluate the compliance of control results with credentials, detect and record the facts of an abnormal absence of items at storage sites and unauthorized substitution of regular items with other items that are not relevant credentials, items.

The modern elemental base allows you to create a compact wearable version of the proposed device that is not connected to the data center with a cable line. And the use of 21 flash drives as a second memory block will provide regular pairing with a computer and the ability to mobilely transfer control results to the desired location.

Information sources

1. R. Wont. Total automation. The magazine "In the world of science", April, 2004.

2. Maltsev A.A. Utility Model No. 65668, IPC G06F 19/00, 2007.

3. Maltsev A.A. Utility Model No. 66829, IPC G06F 19/00, 2007.

4. Maltsev A.A. Utility model No. 66830, IPC G06F 19/00, 2007.

5. Grishin V.D., Moskvin B.V., Kollontay S.S. RF patent No. 2342706, IPC G07C 3/08, G06F 17/00, 2008.

6. Grishin V.D., Moskvin B.V., Chizhevsky A.V. The decision to grant a patent for an invention dated November 20, 2008 by application No. 2007106124/09 (006649), IPC G07C 3/08.

7. Grishin V.D., Pavlov A.N., Mikhailov E.P. RF patent No. 2343544, IPC G07C 3/08, 2009.

8. Grishin V.D., Kudryashov A.N., Timoshenko D.V. RF patent No. 2347272, IPC G07C 3/08, 2009.

Claims (1)

A device for inventory control of storages, containing a multivibrator, the output of which is connected to the second input of the first trigger, the first memory block, the first input of which is the third input of the device, the second input is the second input of the device, and the output is connected to the second input of the comparator, the second output of which is connected with the first input of the first OR circuit, the first, second and third gates, the first delay element, a memory element, the second input of which is connected to the output of the second delay element, characterized in that a reader is inserted into it two control chips "max" and "min", the transceiver input of which is the first input of the device, the second input of the reader is directly connected to the output of the "Read" button and through the toggle switch of the control unit with the input of the multivibrator, and the output of the reader is connected to the information inputs of the first, second and the third fan and to the first input of the register, the second input of which is directly, and the third input through the first delay element is connected with the output of the multivibrator, with the second input of the second trigger and with the first input of the shift register, Torah whose input as the second input of the second memory unit, connected to the second input of the device, and each of n outputs connected individually with the corresponding i-th

the control input of the first memory block, the first input of the comparator is connected to the register output, and the first output is connected to the control input of the third gate and to the first input of the first trigger, the output of which is connected to the indicator "Object is taken into account" of the control unit, the output of the third valve is connected to the second input of the second OR circuit, the first input of which is connected to the output of the first valve, the control input of which is connected to the second output of the comparator, the third output of which is connected to the control input of the second valve and to the second input of the first OR circuit, the output of which is connected to the input of the second delay element and to the first input of the second trigger, the output of which is connected to the “Non-compliance” indicator of the control unit, the “End” indicator of which is connected to the (n + 1) -th output of the shift register, the fourth input of the device is the first input of a memory element, the output of which is connected to the fourth input of the second OR circuit, the third input of which is connected to the output of the second valve, and the output - with the first input of the second memory block, the output of which is the output of the device.