KR20170006190A - System for managing vending machine using load cell - Google Patents

System for managing vending machine using load cell Download PDF

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KR20170006190A
KR20170006190A KR1020150096752A KR20150096752A KR20170006190A KR 20170006190 A KR20170006190 A KR 20170006190A KR 1020150096752 A KR1020150096752 A KR 1020150096752A KR 20150096752 A KR20150096752 A KR 20150096752A KR 20170006190 A KR20170006190 A KR 20170006190A
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information
random number
authentication
management server
unit
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KR101699934B1 (en
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박선주
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박선주
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    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06Q—INFORMATION 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
    • G06Q10/00—Administration; Management
    • G06Q10/08—Logistics, e.g. warehousing, loading or distribution; Inventory or stock management
    • G06Q10/087—Inventory or stock management, e.g. order filling, procurement or balancing against orders
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06Q—INFORMATION 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
    • G06Q30/00—Commerce
    • G06Q30/06—Buying, selling or leasing transactions
    • G06Q30/0601—Electronic shopping [e-shopping]
    • G—PHYSICS
    • G07—CHECKING-DEVICES
    • G07F—COIN-FREED OR LIKE APPARATUS
    • G07F9/00—Details other than those peculiar to special kinds or types of apparatus
    • G07F9/02—Devices for alarm or indication, e.g. when empty; Advertising arrangements in coin-freed apparatus
    • G07F9/026—Devices for alarm or indication, e.g. when empty; Advertising arrangements in coin-freed apparatus for alarm, monitoring and auditing in vending machines or means for indication, e.g. when empty

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Finance (AREA)
  • Economics (AREA)
  • Engineering & Computer Science (AREA)
  • Strategic Management (AREA)
  • Development Economics (AREA)
  • Theoretical Computer Science (AREA)
  • Marketing (AREA)
  • General Business, Economics & Management (AREA)
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  • Quality & Reliability (AREA)
  • Tourism & Hospitality (AREA)
  • Operations Research (AREA)
  • Human Resources & Organizations (AREA)
  • Control Of Vending Devices And Auxiliary Devices For Vending Devices (AREA)
  • Management, Administration, Business Operations System, And Electronic Commerce (AREA)

Abstract

The present invention relates to a system for managing a vending machine by using a load cell. The purpose of the present invention is to improve efficiency of managing automatic selling terminals by measuring information on residual quantity and stock of products included in the automatic selling terminals by using a load cell to transmit the same to a manager in real time. To this end, the system for managing a vending machine by using a load cell comprises: a management server for storing and managing first information including information on warehousing weight and residual quantity condition for each product, second information including information on selling price and payment information for each product, and random number information for authentication of a user, which performs request for information, and generating an information request signal including the random number information by an operation of the user for requesting the first information and the second information; and a plurality of automatic selling terminals having set authentication information, respectively, and if the information request signal is received from the management server and the random number information and the authentication information match, measuring the weights of a plurality of products having unique identification codes, respectively, to generate the first information based on the measured weight information, to generate the second information by collecting information on selling and payment for the products of which the weights are measured, and to transmit the authentication information, the first information, and the second information to the management server.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a vending machine management system using a load cell,

One embodiment of the present invention relates to a vending machine management system using a load cell capable of improving the management efficiency of a vending machine.

In order to manage and operate the vending machine, the vending machine manager directly visits the place where the vending machine is installed and confirms the condition of the vending machine, and confirms the remaining amount of the product, which is costly and time consuming for the inspection. However, vending machines are installed scattered widely over a wide area such as a park outside the building, a subway station or a public place.

In particular, the owner of a vending machine manages a vending machine distributed in various areas ranging from the metropolitan area to the local area. Therefore, it is practically very difficult to visit the vending machine in every region where the vending machine is installed and manage the vending machine .

Recently, there is a system that can transmit vending machine information such as inventory status information, failure status information, and sales history information for each product of the vending machine to a manager server located at a remote place through a modem provided in the vending machine periodically by using a wired data communication network .

However, even though the vending machine remote management system is in a state where there is not enough inventory or malfunction in the vending machine, since the session is established and the corresponding data is transmitted in order to continuously transmit data to the manager server located at the remote place, And a cost for data transmission is generated.

In addition, even when an abnormal signal is not generated in the vending machine, the data is continuously transmitted, which is inconvenient for the administrator to frequently check.

Korean Patent Registration No. 10-1087709 'Vending machine remote management system and method thereof' Japanese Patent Laid-Open Publication No. 10-2015-0008207 'Electronic Device for Unmanned Product Sales and Unmanned Product Sales System Using the Unmanned Product'

In an embodiment of the present invention, a load cell is used to measure remaining amount and height information of a product included in an automatic sales terminal and transmit the real amount to a manager, Management system.

The vending machine management system using a load cell according to an embodiment of the present invention includes first information including goods weight information and residual quantity status information for each product, second information including sales cost information and payment information for each product, And generating an information request signal including the random number information through a user operation for requesting the first information and the second information; Wherein when the random number information and the authentication information are matched with each other when the information request signal is received from the management server, Generating first information on the basis of the measured weight information by measuring the weight, collecting sales and settlement information on the measured weight and generating second information, and transmitting the authentication information, the first information, And an automatic sales terminal for transmitting the second information to the management server.

The vending machine management system using the present load cell further includes an administrator terminal connected to the management server through a wired / wireless communication network, and the management server can transmit the first information and the second information to the administrator terminal at the request of the administrator terminal have.

The first information and the second information may include a first unique identification code for each product, and the authentication information may include second unique identification code information for each vending terminal.

Wherein the management server comprises: a communication module for transmitting / receiving data to / from the manager terminal or the automated teller machine; A registration module for registering terminal information for authentication with the manager terminal or the automatic sales terminal; A random number generation module for generating random number information corresponding to authentication information transmitted from the administrator terminal by a predetermined encryption program; A signal generation module for generating an information request signal including the random number information for requesting the first information and the second information; An information transmission module for transmitting the authentication information, the random number information, the first information and the second information to the manager terminal or the automated teller machine; A storage module for storing the authentication information, the random number information, the encryption program, the first information, and the second information; An information notification module for outputting a situation coping signal for the automated teller machine based on the first information and the second information; And a control module for controlling the operation of each component constituting the rental management server.

Wherein the automated teller terminal comprises: a communication unit for transmitting and receiving data with the management server; An information input unit for inputting authentication information by a user; An information matching unit for matching the random number information with the authentication information; A weight measuring unit for measuring a weight of each of the plurality of products; A first information generating unit for collecting goods weight information and remaining amount status information for each product on the basis of the measured weight information for each of the plurality of goods to generate first information; A second information generation unit for collecting sales cost information and payment information for each product to generate second information; An authentication information generating unit for dividing each area of the display unit by a user's operation, setting different variables for the divided areas, and generating authentication information of a desired number of digits through a combination of the respective variables; A memory unit for storing the authentication information, the random number information, the first information, and the second information; An advertisement output unit for outputting advertisement information transmitted from the rental management server; A display unit that displays data transmitted and received by the communication unit, and displays the first information and the second information when the random number information matches the authentication information; And a second controller for controlling the operation of each component constituting the automated teller machine.

The weight measuring unit may include a strain gauging type load cell.

Since the vending machine management system using the load cell according to the embodiment of the present invention measures the remaining amount and the enhancement information of the goods included in the automatic sales terminal using the load cell and transmits the information to the manager in real time, Can be improved.

In addition, an embodiment of the present invention can provide a separate display on the automated teller machine to output the remaining amount and enhancement information of the products included in the automatic teller machine, measured using the load cell.

Also, according to the embodiment of the present invention, the administrator frequently does not need to check the remaining amount information for each automatic sales terminal and each product by individually opening the automatic sales terminal.

1 is a view schematically showing a vending machine management system using a load cell according to an embodiment of the present invention.
2 is a block diagram schematically showing the management server of FIG.
3 is a block diagram schematically showing the automated teller machine of FIG.

The terms used in this specification will be briefly described and the present invention will be described in detail.

While the present invention has been described in connection with what is presently considered to be the most practical and preferred embodiment, it is to be understood that the invention is not limited to the disclosed embodiments. Also, in certain cases, there may be a term selected arbitrarily by the applicant, in which case the meaning thereof will be described in detail in the description of the corresponding invention. Therefore, the term used in the present invention should be defined based on the meaning of the term, not on the name of a simple term, but on the entire contents of the present invention.

When an element is referred to as "including" an element throughout the specification, it is to be understood that the element may include other elements as well, without departing from the spirit or scope of the present invention. Also, the terms "part," " module, "and the like described in the specification mean units for processing at least one function or operation, which may be implemented in hardware or software or a combination of hardware and software .

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings so that those skilled in the art can easily carry out the present invention. The present invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. In order to clearly illustrate the present invention, parts not related to the description are omitted, and similar parts are denoted by like reference characters throughout the specification.

2 is a block diagram schematically showing a management server of FIG. 1, and FIG. 3 is a block diagram of a vending machine management system using a load cell according to an embodiment of the present invention. Fig.

Referring to FIG. 1, a vending machine management system using a load cell according to an embodiment of the present invention measures the remaining amount and enhancement information of goods included in an automatic sales terminal using a load cell, And is a system for improving management efficiency and includes a management server 10, an automatic sales terminal 20, and an administrator terminal 30. [

That is, the vending machine management system using the load cell according to an embodiment of the present invention is comprised of an automatic sales terminal 20 distributed in one or more areas, a management server 10 located at a remote location, and an administrator terminal 30.

When a random number information and authentication information are matched with each other when the information request signal is received from the management server 10, The method includes generating first information based on the measured weight information by measuring a weight of a plurality of commodities having a code, collecting sales and payment information on the measured weighted goods to generate second information, , And transmits the first information and the second information to the management server (10).

Although not shown, the external structure of the automatic vending machine 20 is provided with an upper opening / closing door and a lower opening / closing door which are respectively openable and closable on the upper and lower surfaces of the cabinet formed integrally in the form of a box, A door, a display, and the like, and a storage door that can be opened and closed can be installed on the front surface of the lower opening / closing door so that the inner product can be separately inserted and taken out. In addition, an advertisement display for outputting the advertisement information transmitted from the management server 10 may be formed in the upper opening / closing door or the lower opening / closing door. However, the present invention is not limited to the external structure of the automatic sales terminal 20, and may be variously modified according to the design intention.

3, the automatic sales terminal 20 includes a communication unit 210, an information input unit 215, an information matching unit 220, a weight measuring unit 230, a first information generating unit 240, A second information generating unit 250, an authentication information generating unit 260, a memory unit 270, an advertisement output unit 275, a display unit, and a second control unit.

The communication unit 210 is a device for transmitting and receiving data with the management server 10 and connects the predetermined communication channel to the management server 10 based on a protocol stack defined in the communication network, And transmits and receives information for the vending machine management service using the communication protocol defined in the communication program. However, the present invention does not limit the type of network, but can be applied to various wired / wireless communication methods such as Wi-Fi, ZigBee, Bluetooth, 3G, 4G, LTE, LTE-A and its equivalent. The communication unit 210 is connected to the management server 10 via the wired / wireless communication network and receives first information including product weighting information and remaining amount information, second information including sales cost information and payment information for each product, , Random number information for authentication of a user performing information request, control command information, and the like.

The information input unit 215 is a device for inputting authentication information by a user. The user who manages the automatic sales terminal 20 operates the display unit or the input button (not shown) of the automatic sales terminal 20, And authentication information matched with the random number information generated by the random number generator 10. In addition, the information input unit 215 sets reference stock information and stock quantity information for each product accommodated in the automatic sales terminal 20.

The information matching unit 220 is a device for matching the random number information with the authentication information. The information matching unit 220 compares the random number information transmitted from the management server 10 with the authentication information input through the information input unit 215 by the user And transmits the determination result to the control unit.

The weight measuring unit 230 may measure the weight of each of the plurality of products, and may include a load cell of a strain gauging type. The weight measuring unit 230 may be installed under each of the receptacles for receiving a plurality of commodities and measure the weight of the commodities accommodated in the receptacles. Such a load cell is a sensor device that converts a measured result into an electric signal after measuring a force or a load, and a Wheatstone bridge circuit is provided therein. Through this, the output value linearly changes according to the direction of the load, can do.

Accordingly, the load cell can detect the weight of each product and detect the remaining amount of the product. In the present invention, a load cell for measuring the weight of each of a plurality of products is described as an example. However, the present invention is not limited to this. For example, an infrared sensor for detecting the stacking length of a product, Or a touch sensor.

The first information generator 240 collects goods weight information and residual quantity information for each product based on the weight information for each of the plurality of products measured by the weight measuring unit 230 to generate first information.

The second information generating unit 250 collects sales cost information and payment information for each product and generates second information. The second information generation unit 250 collects the payment information based on the cost information and the sales information for each product from the cost payment means (not shown) to generate the second information.

At this time, the first information and the second information include a first unique identification code (i.e., a product code) for each product.

The first information generating unit 240 and the second information generating unit 250 generate packet data including the unique identification number of the automated teller machine 20 together with the first information and the second information.

The authentication information generating unit 260 divides each area of the display unit by a user's operation and sets different parameters for the divided areas and then generates authentication information . That is, the authentication information generation unit 260 may execute an authentication information generation program according to a user's operation, divide the display area of the display unit by a desired number, set a desired integer or character for the divided area, And generates authentication information by combining the set integer or character with a desired number of digits. The authentication information generated by the authentication information generating unit 260 may be transmitted to the management server 10 by the user's operation and may be used by the management server 10 as random number information. In addition, the authentication information may include second unique identification code information (i.e., unique identification code of the vending machine 20) for each vending machine 20.

The memory unit 270 stores authentication information, random number information, first information, and second information. The memory unit 270 may be a flash memory type, a hard disk type, a multimedia card type, a card type memory (e.g., SD or XD memory), a random access memory (SRAM), a read-only memory (ROM), an electrically erasable memory (EEPROM) A programmable read-only memory (PROM), a programmable read-only memory (PROM) magnetic memory, a magnetic disk, and an optical disk.

The advertisement output unit 275 is an apparatus for outputting advertisement information transmitted from the management server 10, and can use any one of a flat panel LCD, an LED, an OLED, and an AMOLED.

The display unit 280 displays data transmitted and received by the communication unit 210 for management of the automated teller machine 20, and when the random number information and the authentication information are matched, the first information and the second information are displayed As an apparatus, any one of an LCD (Liquid Crystal Display), a LED (Liquid Emitting Diode), an OLED (Organic LED) and an AMOLED (Active Matrix OLED)

When the information request signal is received from the management server 10, the controller 290 measures the weight of a plurality of commodities each having a unique identification code when the random number information and the authentication information match each other, To generate first information on the basis of the sales information and to collect sales and payment information on the measured goods and to generate second information, and to transmit the authentication information, the first information and the second information to the management server 10 , And the operation of each component constituting the automatic sales terminal 20 can be controlled.

If the weight of the product measured by the weight measuring unit 230 is smaller than a preset reference stock amount, the control unit 290 may transmit a product supplement request signal to the management server 10 itself. At this time, the replenishment request signal of the goods may be information including the unique identification number of the corresponding automatic sales terminal 20 and current inventory amount information.

The management server 10 is a server device of an operating entity or a business entity that provides the management service of the present automatic sales terminal 20 and stores the goods stock weight information and remaining amount status information stored in each automatic sales terminal 20 Second information including sales cost information and payment information for each product, and random number information for authentication of a user performing the information request are stored and managed, and the first information and second information request An information request signal including random number information is generated through a user's operation.

The management server 10 determines whether a supplementary product is requested from an automatic sales terminal 20 through the unique number of the automatic sales terminal 20 when the goods supplement request signal is received from the automatic sales terminal 20 The product code can be used to identify a product to be supplemented, and a signal can be received only at a point in time when a product is required to be replenished to what extent the number of the product should be supplemented through the current inventory quantity information.

2, the management server 10 includes a communication module 110, a registration module 120, a random number generation module 130, a signal generation module 140, an information transmission module 150, An information notification module 170, and a control module 180.

The communication module 110 is a device for transmitting and receiving data with the administrator terminal 30 or the automatic sales terminal 20 and is provided with an administrator terminal 30 or an automatic sales terminal 20 based on a protocol stack defined in the communication network, (For example, HTTP (Hyper-Text Transfer Protocol), WAP (Wireless Application Protocol), and the like) defined in a communication program provided in the administrator terminal 30 or the vending machine 20, / ME (Mobile Explorer)) to transmit and receive information for providing the vending machine management service. However, the present invention is not limited to the types of networks, but may be applied to other types of networks such as WiFi, zigbee, bluetooth, 3G, 4G, 5G, LTE, LTE- Various wired / wireless communication methods may be applied. The communication module 110 is connected to the manager terminal 30 or the automatic sales terminal 20 via the wired / wireless communication network to transmit the first information including the goods stock weight information and the remaining amount status information, Second information including payment information, random number information for authentication of a user performing an information request, control command information, and the like.

The registration module 120 is a device for registering terminal information for authentication with the administrator terminal 30 or the automatic sales terminal 20. The registration module 120 registers the terminal information for authentication with the administrator terminal 30 or the automatic sales terminal 20, (30) or the unique identification code of the automated teller machine (20) is registered by the manager.

The signal generation module 140 generates an information request signal including random number information for requesting the first information and the second information. The signal generation module 140 generates random number information corresponding to the authentication information transmitted from the administrator terminal 30 by a predetermined encryption program. The information request signal may include random number information and a unique identification number of the automatic sales terminal 20 requesting the information request.

The information transmission module 150 transmits the authentication information, the random number information, the first information and the second information to the administrator terminal 30 or the automated teller machine 20. For example, the information transmission module 150 may transmit the authentication information, the random number information, the first information, and the second information to the administrator terminal 30 in the form of a message such as MMS or SMS.

The storage module 160 is a device for storing authentication information, random number information, encryption program, first information and second information, such as a flash memory type and a hard disk type), a multimedia card micro type, Such as SD or XD memory, RAM, SRAM, ROM, EEPROM, PROM, magnetic memory, magnetic disk, or optical disk.

The information notification module 170 is a device for outputting a situation coping signal to the automated teller machine 20 based on the first information and the second information and compares the first information and the second information with preset reference information And if the weight of the merchandise in the automatic sales terminal 20 is insufficient, or if an error occurs in the product cost or the payment process, the manager informs the manager through a voice signal or a display signal set in advance.

The control module 180 generates first information including the goods stock weight information and the remaining amount status information stored in each of the automatic sales terminals 20, second information including sales cost information and payment information for each product, And stores the random number information for the authentication of the user performing the information request and manages the random number information for requesting the first information and the second information to the rental management server 10 ) Can control the operation of each constituent element constituting the image forming apparatus.

The manager terminal 30 is a terminal device of a manager who desires to receive the vending machine management service. The manager terminal 30 is a terminal device of the manager who receives various information (i.e., first information, A personal digital assistant (PDA), a portable terminal such as a tablet PC, a personal computer, a smart TV, and the like.

This manager terminal 30 installs a vending machine management application and connects to the management server 10 by execution of the vending machine management application and sends a signal requesting the first information and the second information of the vending machine 20 And may monitor the automatic sales terminal 20 after receiving the first information and the second information from the management server 10. Here, the vending machine management application is an application program installed and operated in the administrator terminal 30 to provide the vending machine management service. The application is downloaded from the management server 10 or online market through the wired / wireless communication network, ) So that information can be transmitted and received in both directions.

Accordingly, even if the manager of the automatic sales terminal 20 is moving or staying in the installation area of another automatic sales terminal 20, the information of the desired automatic sales terminal 20 is automatically received from the management server 10 A person who manages the management server 10 separately becomes unnecessary.

Since the vending machine management system using the load cell according to the embodiment of the present invention measures the remaining amount and the height information of the goods included in the automatic sales terminal 20 using the load cell and then transmits it to the manager in real time, The management efficiency of the portable terminal 20 can be improved. In an embodiment of the present invention, a separate display may be installed in the automated teller terminal 20 to output the remaining amount and enhancement information of the goods included in the automatic teller terminal 20 measured using the load cell. In addition, an embodiment of the present invention does not require the administrator to frequently check the remaining amount information for each automatic sales terminal 20 and each product by opening the automatic sales terminal 20.

It is to be understood that the present invention is not limited to the above-described embodiment, and that various modifications, additions and substitutions are possible, without departing from the scope and spirit of the invention as disclosed in the accompanying claims. It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.

10: management server 20: automatic sales terminal
30: administrator terminal 110: communication module
120: registration module 130: random number generation module
140: signal generation module 150: information transmission module
160: storage module 170: information notification module
180: Control module 210:
215: information input unit 220: information matching unit
230: weight measuring unit 240: first information generating unit
250: second information generation unit 260: authentication information generation unit
270: memory unit 275: advertisement output unit
280: display unit 290:

Claims (6)

Stores and manages first information including goods weight information and residual quantity status information for each product, second information including sales cost information and payment information for each product, and random number information for authentication of a user performing information request A management server for generating an information request signal including the random number information through a user's operation for requesting the first information and the second information; And
Wherein when the random number information and the authentication information are matched with each other when the information request signal is received from the management server, Generates first information based on the measured weight information, generates second information by collecting sales and settlement information on the measured weighted product, and generates the second information based on the authentication information, the first information and the second information 2 information to the management server. The system of claim 1, further comprising:
The method according to claim 1,
Further comprising an administrator terminal connected to the management server via a wired / wireless communication network, wherein the management server transmits the first information and the second information to the administrator terminal at the request of the administrator terminal, Management system.
The method of claim 2,
Wherein the first information and the second information include a first unique identification code for each product and the authentication information includes second unique identification code information for each of the automated teller machines. Management system.
The method of claim 3,
The management server
A communication module for transmitting and receiving data with the manager terminal or the automated teller machine;
A registration module for registering terminal information for authentication with the manager terminal or the automatic sales terminal;
A random number generation module for generating random number information corresponding to authentication information transmitted from the administrator terminal by a predetermined encryption program;
A signal generation module for generating an information request signal including the random number information for requesting the first information and the second information;
An information transmission module for transmitting the authentication information, the random number information, the first information and the second information to the manager terminal or the automated teller machine;
A storage module for storing the authentication information, the random number information, the encryption program, the first information, and the second information;
An information notification module for outputting a situation coping signal for the automated teller machine based on the first information and the second information; And
And a control module for controlling the operation of each component constituting the rental management server.
The method according to claim 1,
The automated teller machine
A communication unit for transmitting / receiving data to / from the management server;
An information input unit for inputting authentication information by a user;
An information matching unit for matching the random number information with the authentication information;
A weight measuring unit for measuring a weight of each of the plurality of products;
A first information generating unit for collecting goods weight information and remaining amount status information for each product on the basis of the measured weight information for each of the plurality of goods to generate first information;
A second information generation unit for collecting sales cost information and payment information for each product to generate second information;
An authentication information generating unit for dividing each area of the display unit by a user's operation, setting different variables for the divided areas, and generating authentication information of a desired number of digits through a combination of the respective variables;
A memory unit for storing the authentication information, the random number information, the first information, and the second information;
An advertisement output unit for outputting advertisement information transmitted from the rental management server;
A display unit that displays data transmitted and received by the communication unit, and displays the first information and the second information when the random number information matches the authentication information; And
And a second controller for controlling the operation of each component constituting the automated teller machine.
The method of claim 5,
Wherein the weight measuring unit includes a load cell of a strain gauging type.
KR1020150096752A 2015-07-07 2015-07-07 System for managing vending machine using load cell KR101699934B1 (en)

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