CA2620246C - Automatic digital inventory counter - Google Patents

Automatic digital inventory counter Download PDF

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Publication number
CA2620246C
CA2620246C CA2620246A CA2620246A CA2620246C CA 2620246 C CA2620246 C CA 2620246C CA 2620246 A CA2620246 A CA 2620246A CA 2620246 A CA2620246 A CA 2620246A CA 2620246 C CA2620246 C CA 2620246C
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electronic circuit
electronic
inventory
circuit
binary
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CA2620246A1 (en
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Nasr Bistawrous
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Individual
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Priority to CA2620246A priority Critical patent/CA2620246C/en
Priority to PCT/IB2009/050482 priority patent/WO2009101556A1/en
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    • GPHYSICS
    • G06COMPUTING; CALCULATING OR COUNTING
    • G06QINFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES; SYSTEMS OR METHODS SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES, NOT OTHERWISE PROVIDED FOR
    • G06Q10/00Administration; Management
    • G06Q10/08Logistics, e.g. warehousing, loading or distribution; Inventory or stock management
    • G06Q10/087Inventory or stock management, e.g. order filling, procurement or balancing against orders

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  • Business, Economics & Management (AREA)
  • Economics (AREA)
  • Engineering & Computer Science (AREA)
  • Marketing (AREA)
  • Quality & Reliability (AREA)
  • Finance (AREA)
  • Entrepreneurship & Innovation (AREA)
  • Human Resources & Organizations (AREA)
  • Accounting & Taxation (AREA)
  • Operations Research (AREA)
  • Development Economics (AREA)
  • Strategic Management (AREA)
  • Tourism & Hospitality (AREA)
  • Physics & Mathematics (AREA)
  • General Business, Economics & Management (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Warehouses Or Storage Devices (AREA)

Abstract

An Automatic Digital Inventory Counter for calculating and displaying the amount of inventory at any point in time. The invention comprises special shelving mechanism units arranged in rows and columns with electrical switches to sense the inventory presence. The calculations i.e. the summations are done sequentially along the way to a final display unit, thus minimizing the number of wires required in the circuit. Calculations are done through -the well known--binary digit full or half adders to calculate the totals sequentially after passing each special shelving mechanism unit. The total of each row is added to the previous row - through binary full or half adders- until the final display unit is reached, thus enabling the device to display the amount of inventory on hand. The calculations are done almost instantaneous without any error and with hundred percent accuracy.

Description

Automatic Digital Inventory Counter Field of the Invention:
The present invention relates to an automatic digital system for calculating the number of inventory items on hand. Although used for various types of inventory, such system will be mainly used for inventory count of relatively expensive items such as tobacco displays at retail stores, memory units for computers or expensive pens and similar items.
Back Ground:
Such system is not currently available in the market. Retailers, store managers and wholesale staff resort to manual counts with paper and pencil. Even helping devices such as ''Portable Data Terminals" PDT involves the process of manually counting the items on hand. My invention automatically calculates the number of inventory items on hand at any point on time and displays the number constantly on a display unit. It is often very desirable in the retail business field to accurately calculate the number of inventory items on hand to help identify and prevent shrink problems. Using the PDT still involves the process of manually counting the items, which gives room for error, inaccuracy and wasting the time. Specifically, in the fast paced retail stores it is often tedious ¨virtually impossible- to identify shrink through manual counts because items are being sold during the count and also because of the inaccuracy inherited in the process of the manual count itself. Prior art similar to this invention utilizes a light source, a load or a pressure sensor to determine presence of inventory item. These methods rendered to be unfeasible or extremely expensive. I found that these disadvantages will be overcome by introducing my system, which constantly and precisely displays the total number of inventory items in a certain display, a group of displays, or a whole store at any point on time.

Summary of the Invention:
A system for calculating an inventory of on-hand items comprising: at least one special shelving mechanism unit comprising at least one pre-stressed metal alloy sheet that bends under the force of gravity of an on-hand inventory item to touch an electric connector when the inventory item is present hence closing as electric digital circuit and returns to original open position due to the pre-stressing force when the inventory item is removed.
The system also uses electronic circuits named A, B, C and D to perform the summation for the counts of on-hand inventory items to reach a final count that will be displayed on a digital display. The circuits are interconnected with wiring bundles named X, Y and Z
responsible for carrying the digital signals between circuits and the special shelving mechanism units. It is digitally feasible to replace all the electronics circuits and the wiring bundles with a single or multiple microcontrollers.
List of Drawings:
Exemplary embodiments of the present invention will be more readily understood with the reference to the attached figures, wherein, Figure 1 is a general layout for all parts of the invention and the way these parts are interconnected together.
Figure 2 is three views for the special shelving mechanism unit. Figure 3 is an implementation of electronic circuit A which is embodied in each special shelving mechanism unit. Figure 4 is an implementation of electronic circuit B embodied in each special shelving mechanism unit. Figure 5 represents an intermediate electronic circuit C, Figure 5 also depicts a preceding and a following wiring bundle Y.
Figure 6 depicts an intermediate electronic circuit C together with a final electronic circuit D (numeral 19). Figure 7 depicts the final electronic circuit D in the invention together with the display unit. Figure 8 is a cross sectional view for a possible commercial embodiment for the special shelving mechanism unit, where it contains a Printed Circuit Board (PCB), a flexible metal flap to act as a switch by bending down ¨
under the weight of inventory item- to touch a metal connector thus closing a digital circuit under this inventory item indicating its presence.
Preferred Embodiment of the Invention:
The present invention consists of a system for digitally and automatically counting the number of inventory items on a display. In one aspect of the invention, the invention comprises a special shelving mechanism unit (numeral 10) that holds inventory items in place. The units can be arranged in rows and columns according to the design of the retail store. The special shelving mechanism unit is equipped with sensors to sense the presence of each inventory item. The sensor can be simply an electrical switch that is set to on when the inventory item is present, and set to off when no item is present. The main problem to face this approach is that we would have a non-manageable number of wires in the circuit. Thus, the special shelving mechanism unit embodies an electronic circuit, which is referred to as electronic circuit A, which will group a set of switches at the on position by generating the binary representation for the number of those switches.
An example of such grouping is illustrated in figure 3, where the switches are grouped in sets of three switches. Other embodiments could group the switches in sets of
2 or 4 or any number. The numeral 12 identifies electronic circuit A in all other figures. The output of all such electronic circuits A is passed on to another electronic circuit which is referred to as electronic circuit B. Electronic circuit B is a set of binary digit adders and half adders that will perform the binary addition for the outputs of all circuits A, thus, enabling us to identify the number of items present on each special shelving mechanism unit. Circuit B is illustrated in figure 3 and is given the numeral 13 in the rest of the drawings of the invention. The number of items is represented in binary notation, accordingly, the output of electronic circuit A is carried through a wiring bundle named electric wire bundle X. Electric wire bundle X is assigned the numeral 14 in the attached drawings of the invention. As each row of the display will hold many of those special shelving mechanism units, we must add the numbers as we go along the row to minimize the number of wires reaching the final display unit.
Electric Wire bundle X will supply its output to electronic circuit C, which is comprised of a set of electronic binary digit adders. Electronic circuit C
will perform the binary addition on its two inputs. Electronic circuit C is assigned the numeral 17 in the attached drawings. The first input is the input from the electric wire bundle X and the second is the input from electric wire bundle Y. The second input i.e. the input from electric wire bundle Y is the binary representation of all switches at the on position ¨so far- along this row of the system. By adopting this mechanism I was able to minimize the number of wires needed to implement the system. Without such mechanism, it would be virtually impossible to implement such a system. The idea of sequentially adding along the way makes the counting possible, as we will only need a few number of wires to carry the binary signal.
Electric wire bundle Y comprises a set of wires to carry the binary representation of the number of switches set at the on position along each row ¨for example a shelf- in the system. Electric wire bundle Y is represented in the drawings by the numerals 15, 24 and 25. A preceding wire bundle Y (numeral 24) is a wire bundle that gives an input to electronic circuit C. A following wire bundle Y (25) is a wire bundle Y that receives an output from an electronic circuit C. It is worth noting that a single wire bundle Y in the system can possess both qualifiers. In other words, an electric wire bundle Y
can be a preceding wire bundle Y for some electronic circuit C and ¨at the same time-can be a following wire bundle Y for another electronic circuit C.
At the end of each row, we can allocate an electronic circuit C with the qualifier "end unit". This end unit electronic circuit C is typically implemented as all other electronic circuits C in the system, however, the output of this end unit electronic circuit C is passed on to electronic circuit D. Electronic circuit C can have another qualifier which is "start unit". This start unit is illustrated in the drawings by the numeral 22. The start unit electronic circuit C will have only one input coming from electric wire bundle X and one output conveyed to electric wire bundle Y. The other input will be considered zero as this is a beginning of a row and we do not have any preceding shelving mechanism unit so far in the system.
Elect:onic circuit D (illustrated in the figures by the numerals 19, 20 and 21) is an electronic circuit comprising a set of binary digit adders. In a typical application of the system, we would expect electronic circuit D to be bigger than or equal to electronic circuit C in size, depending on the application and the design of the system.

Electronic circuits D are interconnected by wiring bundle Z which is illustrated in the figures by the numeral 16. The best way to understand the function of electronic circuit D is to view this circuit as the entity responsible for generating the totals vertically i.e. between the rows. In a typical application, we will start from row one and proceed till the last row and finally we will reach the display unit. The qualifier "start unit" to electronic circuit D is assigned to the first circuit in the system, such start unit is characterized by receiving only one input via an electric wire bundle Y and the other input is considered to be zero.
Electronic circuit D has another qualifier named "final unit" which is illustrated in the figures by the numeral 20 in the drawings. We can define the final unit as the unit giving its output to the final display unit. Typically, we would have only one final electronic circuit D in the system.
Electronic circuits D are interconnected through wiring bundle Z, which comprises a set of wires to carry the binary representation of the totals among rows (sequentially) in the system. The total starts from electronic circuit D
"start unit" (21) and proceeds among rows. After passing each row the total of this row is added to the total calculated so far in the system. The final total proceeds to the following row and so on and so forth until we reach the final unit of electronic circuit D and finally we reach the display unit.

The display unit is the unit responsible for displaying the final number of total inventory items to the user of the system. The display unit will be implemented by digital circuits that will convert the binary representation of the number ¨represented in electronic wire bundle Z entering the unit- to digital numbers understood by a regular user of the system. The display unit is assigned the numeral 23 in the attached drawings.
The sensor mechanism can be implemented commercially as depicted in figure 8, where the switches can be replaced by a flexible metal sheet (numeral 31) that can bend down under the weight of the inventory unit to touch the electric connector (numeral 29) to close the circuit and pass the output to the electronic circuit A attached to the Printed Circuit Board (numeral 30) embodied in the special shelving mechanism unit.
In another embodiment of the invention, we can group electronic circuits C and D
with all their qualifiers i.e. numerals (17 and 18) in one resilient embodiment to facilitate the production of the system commercially. This embodiment is assigned the numeral 32 .. in the attached drawings. The rest of electronic circuits i.e. electronic circuit D with all its qualifiers (19, 20 and 21) can be embodied in the final display unit. This embodiment is depicted in figure 9 of the drawings, where I only depict a partial system to present the idea and the general layout.
Although only a single embodiment of the present invention has been described and illustrated, the present invention is not limited to the features of this embodiment, but includes all variations and modifications within the scope of the claims.

Claims (5)

THE EMBODIMENT OF THE INVENTION IN WHICH AN EXCLUSIVE PROPERTY
OR PRIVILEGE IS CLAIMED ARE DEFINED AS FOLLOWS:
1. A system for calculating an inventory of on-hand items, said system comprising:
at least one special shelving mechanism unit comprising:
at least one pre-stressed metal alloy sheet that bends under the force of gravity of an on-hand inventory item to touch an electric connector when the inventory item is present hence closing an electric digital circuit and returns to original open position due to a pre-stressing force when the inventory item is removed;
an electronic circuit A, wherein, a subset of an electrical pre-stressed metal alloy sheets for detecting a presence of the on-hand item is grouped to generate an equivalent binary number of an electrical pre-stressed metal alloy sheets touching their corresponding electric connectors; and an electronic circuit B comprising a set of electronic binary digit adders that will sum up a first output of all electronic circuits A enclosed in the special shelving mechanism unit;
=

a wiring bundle X comprising a set of at least one wire receiving the binary representation of electronic circuit B output and providing power to the special shelving mechanism unit;
an electronic circuit C comprising a set of electronic binary digit adders that adds the number represented in the wiring bundle X with a first previous total number of the on-hand inventory items in the system;
an electronic circuit D comprising a set of electronic binary digit adders that add the number represented in the wiring bundle X with a second previous total number of the on-hand inventory items in the system;
a wiring bundle Z comprising a set of at least one wire that connects the electronic circuits D thereby summing up the total number of pre-stressed metal alloy sheets touching their corresponding electric connectors at its particular branch of the circuit, the wiring bvndle Z can also supply power to electronic circuits D; and an electronic display unit connected to wiring bundle Z to display a final number of the at least one pre-stressed metal alloys touching the electric connectors thereby revealing a final total number of the on-hand inventory items positioned on a plurality of special shelving mechanism units.
2. The system of claim 1, wherein the electronic circuit A can group at least one of the pre-stressed metal alloy sheet in the at least one special shelving mechanism unit.
3. The system of claim 1, wherein the electronic circuit B comprises a combination of zero or more half binary digit adders and zero or more full binary digit adders.
4. The system of claim 1, 2 or 3 wherein electronic circuit B performs the binary addition on the output of all electronic circuits A embodied in the at least one special shelving mechanism unit.
5. The system of claim 1, 2, 3 or 4 wherein the electronic circuits A, B, C
and D together with wiring bundles X and Z can be replaced by an action of one or more digital microcontroller.
CA2620246A 2008-02-11 2008-02-11 Automatic digital inventory counter Active CA2620246C (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
CA2620246A CA2620246C (en) 2008-02-11 2008-02-11 Automatic digital inventory counter
PCT/IB2009/050482 WO2009101556A1 (en) 2008-02-11 2009-02-05 Automatic digital inventory counter

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA2620246A CA2620246C (en) 2008-02-11 2008-02-11 Automatic digital inventory counter

Publications (2)

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CA2620246A1 CA2620246A1 (en) 2009-08-11
CA2620246C true CA2620246C (en) 2022-04-19

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Family Applications (1)

Application Number Title Priority Date Filing Date
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Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5533079A (en) * 1993-01-25 1996-07-02 Medselect Systems, Inc. Inventory monitoring apparatus
US5703785A (en) * 1994-08-19 1997-12-30 Bluemel; Mark R. Inventory control apparatus and method of using same
US20050086133A1 (en) * 2003-01-08 2005-04-21 Scherer William H. System and method for sensing and analyzing inventory levels and consumer buying habits

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Publication number Publication date
WO2009101556A1 (en) 2009-08-20
CA2620246A1 (en) 2009-08-11

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