WO2021006506A1 - System, method, and program for distributing food by using blockchain - Google Patents

Abstract

A system for distributing food by using a blockchain according to an embodiment of the present invention comprises: a QR code printing device; multiple user terminals capable of recognizing the QR code; multiple nodes that the multiple user terminals can access; a blockchain in which the multiple nodes are registered; at least one processor; and at least one memory. The at least one processor produces a first QR code on the basis of QR data received from a server, and subjects the first QR code to image conversion processing, thereby producing a second QR code. The at least one processor prints the second QR code stored in the memory on an object having a curved surface (food itself) by means of the QR code printing device, and prints the first QR code on at least one of a packaging sheet and a packaging box of the food. When the first or second QR code is recognized by the user terminal, the at least one processor provides the user terminal with food information corresponding to the food via a URL, registers a block including a transaction comprising the food information in the block chain, and connects the block in a hash chain type. The at least one processor transmits the transaction, which has occurred on one of the multiple nodes registered in the blockchain, to the multiple nodes registered in the blockchain such that the transaction is shared by the multiple nodes. The image conversion processing maintains four vertices of the first QR code and deforms lines that connect the vertices into convex types, thereby producing the second QR code that can be QR-recognized even on the object having a curved surface.

Description

Food distribution system, method and program using blockchain

The present invention relates to a food distribution system, method, and program using a block chain, and more specifically, by printing a QR code on the food itself, through which the production and distribution process to producers, distributors and consumers is blocked. It relates to chain-managed food distribution systems, methods and programs.

At the time when domestic egg consumption continues to increase, the demand for hygiene and safety of eggs from the dairy industry is increasing due to problems such as pesticide fluctuations and bird flu.

The Ministry of Food and Drug Safety recently announced a partial amendment to the'Livestock Labeling Standards', which focuses on marking the egg eggshell (shell) with the date of spawning to ensure the hygiene and safety of eggs. However, laying hen farmers are being pointed out that the government's countermeasure to secure egg safety by simply marking the laying date without taking fundamental measures such as establishing a cold chain system and expanding the establishment of an egg distribution center is a tabletop public opinion.

Japanese Patent Application Laid-Open No. 2016-146091 (hereinafter referred to as “conventional technology”) is a technology behind the present invention. The prior art discloses an egg, an information display system, and an information display method that can expect an advertisement effect by displaying information such as advertisement display on the surface of the egg.

However, the prior art only displays advertisements on the surface of eggs and does not provide production and distribution information, and thus does not provide any information necessary for producers and distributors to produce and distribute fresh eggs and supply them to consumers.

The present invention is a food distribution system, method, and program in which an image-modified QR code is printed on food, for example, an egg itself, and the production and distribution process to producers, distributors, and consumers is managed through a blockchain. Provides.

The present invention enables QR recognition with a general smartphone by printing an image-modified QR code on food, for example, the egg itself, through which producer, distributor, and consumer information about egg production through a block chain. , To share history information and history information is a task to solve.

Meanwhile, the technical problem to be achieved by the present invention is not limited to the technical problem mentioned above, and various technical problems may be included within a range that is obvious to a person skilled in the art from the contents to be described below.

A food distribution system using a block chain according to an embodiment of the present invention for solving the above problems includes a QR code printing device; A plurality of user terminals capable of recognizing QR codes; A plurality of nodes to which the plurality of user terminals are accessible; A block chain in which the plurality of nodes are registered; At least one processor; And at least one memory in which instructions for causing the at least one processor to perform an operation are stored when executed by the at least one processor, wherein the at least one processor is configured based on QR data received from the server. 1 Generate a QR code, generate a second QR code by performing image conversion processing on the first QR code, store the second QR code in the memory, and by the QR code printing device, in the memory The stored second QR code is printed on the food itself, which is a curved surface, and the curved body includes an oval-shaped curved body having different radii of curvature at points along the curved surface.- By the QR code printing device, the first QR When the code is printed on at least one of the packaging paper and the packaging box of the food, and when the first QR code or the second QR code is recognized by the user terminal, food information corresponding to the food is transmitted to the user through a URL. Provided to the terminal-The food information includes production information, history information, and location information, and the production information includes the origin, content, grade determination date, packaging date, expiration date, producer, and sales person of the food- , By registering a block containing a transaction consisting of the food information in the block chain, connecting the block in the form of a hash chain, and occurring in one node among the plurality of nodes registered in the block chain Transmit the transaction to the plurality of nodes registered in the blockchain, so that the transaction is shared by the plurality of nodes-the transaction includes the creation, change and destruction of the food information -, the image conversion The process is characterized in that, while maintaining the four vertices of the first QR code, by transforming a line connecting the vertices into a convex shape, the second QR code capable of QR recognition even in the curved surface is generated.

In addition, the food distribution system according to an embodiment of the present invention further includes a temperature/humidity sensor installed in at least one of the packaging box of the food, a box and a warehouse in which the food is stored, and a loading box of a vehicle that moves the food. Including, the at least one processor, the temperature and humidity sensor to measure the temperature and humidity of the environment in which the food is stored in real time, and when the environment in which the food is stored changes, the food is moved to another place. When at least one of when moving and when the food has finished moving to another place, the temperature and the humidity of the environment in which the food is stored are measured and provided to the user terminal, and the history information is the food It is characterized by including the temperature and the humidity of the stored environment.

In addition, in the food distribution system according to an embodiment of the present invention, the temperature/humidity sensor includes a GPS function for real-time recognition of position coordinates at which the temperature/humidity sensor is located, and the environment in which the food is stored When measuring the temperature and the humidity, the location coordinates where the temperature/humidity sensor is located are recognized, the location information includes the location coordinates, and the at least one processor includes the location coordinates consecutive on the map. It characterized in that the location information indicated by a dot or a line is provided to the user terminal.

In addition, in the food distribution system according to an embodiment of the present invention, the at least one processor uses a 64-bit key for the QR data after generating the first QR code and before generating the second QR code. Then, encryption is performed by applying a data encryption algorithm over three steps, and when the first QR code or the second QR code is recognized by the user terminal, in the server to which the user terminal is accessed through the URL The decryption is performed, and the location of the user terminal, the number of times the user terminal recognizes the first QR code or the second QR code, and an ID of the user terminal are collected.

In addition, in the food distribution system according to an embodiment of the present invention, the user terminal includes a first user terminal and a second user terminal, and the at least one processor is a place in which the location of the second user terminal is preset. When a preset distance is exceeded and the ID of the second user terminal is different from the ID of the first user terminal at the preset place, the first QR code recognized by the second user terminal or the second If the QR code is determined as a fake and the location of the second user terminal does not exceed the preset distance from the preset place, the second user terminal recognizes the first QR code or the second QR code If one number exceeds a preset number and the ID of the second user terminal is different from the ID of the first user terminal at the preset place, the first QR recognized by the second user terminal The code or the second QR code is determined as a fake, the location of the second user terminal does not exceed the preset distance from the preset place, and the second user terminal is the first QR code or the second When the number of times the QR code is recognized does not exceed the preset number, the first QR code or the second QR code recognized by the second user terminal is determined to be genuine, and the location of the second user terminal Even when the second user terminal exceeds the preset distance from the preset place, or when the number of times the second user terminal recognizes the first QR code or the second QR code exceeds the preset number, the second user If the ID of the terminal is the same as the ID of the first user terminal at the preset location, the first QR code or the second QR code recognized by the second user terminal is determined as genuine To do.

Further, in the food distribution system according to an embodiment of the present invention, when the environment in which the food is stored changes, if the temperature or the humidity changes by exceeding a preset threshold, the at least one processor It characterized in that it provides a push alarm (Push Alarm) to all user terminals that have recognized the second QR code printed on the food and the first QR code printed on the packaging paper or the packaging box of the food.

In addition, in the food distribution system according to an embodiment of the present invention, the at least one processor collects a cache from the user terminal to form big data including the user's age and internet search record, and the big data From, in consideration of the user's age, the Internet search record, and environment variables, a customized recipe is provided to the user terminal.

In addition, in the food distribution system according to an embodiment of the present invention, the at least one processor, by the user terminal, at least one of the first QR code, at least one of the second QR code, or, at least one When the combination of the first QR code and the at least one second QR code is dynamically photographed, the first QR code or the second QR code captured by the user terminal is recognized as a plurality, and a plurality of By providing a list of URLs corresponding to the recognized first QR code or the second QR code to the user terminal, the food information is provided for each list.

A food distribution method using a block chain according to an embodiment of the present invention comprises the steps of: generating a first QR code based on QR data received from a server; Generating a second QR code by performing image conversion processing on the first QR code; Storing the second QR code in a memory; Printing the second QR code stored in the memory on the food itself, which is a curved surface, by a QR code printing apparatus, the curved body including an oval-shaped curved body having different radiuses of curvature at points along the curved surface; Printing the first QR code on at least one of a packaging paper and a packaging box of the food by the QR code printing device; When the first QR code or the second QR code is recognized by the user terminal, providing food information corresponding to the food through a URL to the user terminal-The food information includes production information, history information, and It includes location information, and the production information includes the origin of the food, the content amount, the grade determination date, the packaging date, the expiration date, the producer, and the sales person; Registering a block including a transaction consisting of the food information in the block chain, and connecting the block in the form of a hash chain; And transmitting the transaction occurring in one node among the plurality of nodes registered in the block chain to the plurality of nodes registered in the block chain, so that the transaction is shared by the plurality of nodes.- The transaction is Including the creation, change, and disposal of the food information-and the image conversion process, while maintaining the four vertices of the first QR code, by transforming the line connecting the vertices into a convex shape, the It is characterized in that generating the second QR code capable of QR recognition even on a curved surface.

A computer program according to an embodiment of the present invention is characterized in that it is stored in a medium to execute a food distribution method using a block chain on an electronic device.

According to the present invention as described above, the effects described below can be obtained. However, the effect obtained through the present invention is not limited thereto.

According to the present invention, by printing an image-modified QR code on the food itself, for example, the egg itself, it is possible to recognize QR even with a general smartphone, and through this block chain between producers, distributors and consumers. Share egg production information, history information, and history information. For example, in the event of an egg-related safety problem such as a pesticide surge or bird flu, it is possible to quickly and clearly identify the production source and distribution process of the problem egg. Customized responses such as discarding only eggs are possible.

In addition, according to the present invention, by printing an image-modified QR code on the food itself, even after the food finally reaches the consumer, even when the consumer removes the packaging paper or packaging box of the food and stores the food itself in a refrigerator or the like, Through the QR code, it is possible to easily check food history information and expiration date. In particular, when photographing a plurality of QR codes, it is possible to enable multi-QR sensing in which a plurality of QR codes are recognized, so that a consumer can easily check the history information and expiration date of a plurality of stored foods.

In addition, according to the present invention, food production information, history information, and history information are registered in the blockchain, and the information is shared and managed with producers, distributors and consumers, so the integrity and clarity of information can be ensured. Through this, it is possible to prevent intermediary merchants from buying and selling stores, dramatically improve cold chain logistics, and prevent forgery and falsification of information.

In addition, according to the present invention, by performing the encryption and decryption step on the QR code, it is possible to prevent the distribution of fake food by forgery and falsification of the QR code, and provide reliable genuine food to consumers.

In addition, according to the present invention, by including the temperature and humidity of the environment in which the food is stored in the food history information, when an abnormality in the environment occurs, a push alarm is provided to the producer or distributor related thereto, enabling a quick response. do.

Further, according to the present invention, it is possible to promote food consumption by providing a recipe for food using big data to consumers.

The technical problems to be achieved in the present invention are not limited to the above technical problems, and other technical problems that are not mentioned will be clearly understood by those of ordinary skill in the technical field to which the present invention belongs from the following description.

1 is a conceptual diagram showing an apparatus for printing a QR code according to an embodiment of the present invention.

2 is an explanatory diagram illustrating image conversion processing for a QR code according to an embodiment of the present invention.

3 is a conceptual diagram showing a block chain according to an embodiment of the present invention.

4 is a flow chart showing a food distribution method according to an embodiment of the present invention.

5 is an exemplary program screen for providing food production information according to an embodiment of the present invention.

6A is an exemplary program screen providing history information of food according to an embodiment of the present invention.

6B is an exemplary program screen providing history information of food according to an embodiment of the present invention.

7 is an exemplary program screen for providing a food recipe according to an embodiment of the present invention.

8 is an exemplary program screen showing that a plurality of QR codes are recognized according to an embodiment of the present invention.

Hereinafter, a'food distribution system, method and program using a block chain' according to the present invention will be described in detail with reference to the accompanying drawings. The described embodiments are provided so that a person skilled in the art can easily understand the technical idea of the present invention, and the present invention is not limited thereto. In addition, matters expressed in the accompanying drawings are schematic drawings for easily explaining embodiments of the present invention, and may be different from a form actually implemented.

Meanwhile, each component expressed below is only an example for implementing the present invention. Accordingly, in other implementations of the present invention, other components may be used without departing from the spirit and scope of the present invention.

In addition, the expression'including' certain elements is an open expression, merely refers to the existence of the corresponding elements, and should not be understood as excluding additional elements.

Further, while the present teachings are described in connection with various embodiments, it is not intended that the present teachings be limited to such embodiments. Rather, as understood by those of ordinary skill in the art, the present teachings include various alternatives, modifications, and equivalents.

In addition, the'user terminal' and the'electronic device' can communicate with a smartphone, a wearable device (eg, smart glasses, watches, etc.), an IoT terminal, a personal digital assistant (PDA), a tablet PC, a laptop computer, or a server. , It may be any device that has a built-in camera and can recognize a QR code.

In addition, the'processor' may include a hardware configuration such as a micro processing unit (MPU) or a central processing unit (CPU), a cache memory, and a data bus. In addition, it may further include an operating system and a software configuration of an application that performs a specific purpose.

In addition, the'server' is a general computing device (e.g., a computer processor, memory, storage, input device and output device, devices that may include components of other conventional computing devices, electronic communication devices such as routers, switches, etc. Electronic information storage systems such as attached storage (NAS) and storage area networks (SAN)) and computer software (i.e., instructions that cause a computing device to function in a specific way) to achieve desired system performance and functionality. It may be to achieve.

In addition,'media' includes a computer-readable storage medium. The storage medium can be any available medium that can be accessed by a computer. For example, such computer-readable storage media may be in the form of RAM, ROM, EEPROM, CD-ROM or other optical disk storage, magnetic disk storage or other magnetic storage devices, or instructions or data structures. It may include, but is not limited to, any other medium that may be used to carry or store program code and that may be accessed by a computer.

Also, the'program' is stored in the above-described medium, and may be a computer program including an application or software.

Hereinafter, an apparatus for printing a QR code according to an embodiment of the present invention will be described in detail through FIG. 1.

The QR code printing apparatus 100 includes at least one processor 110, at least one memory storing instructions for causing the at least one processor 110 to perform an operation when executed by the at least one processor 110 It includes 120, and further includes an input device 130 for receiving a QR code from the server 200 or receiving a user input, and an output device 140 for ejecting ink to print the QR code.

The processor 110 receives QR data from the server 200. In this case, the QR data is data for generating a QR code, and may be data to which base64-string technology is applied, for example. Accordingly, since one QR code is matched with respect to one string, a QR code corresponding thereto may be generated based on the QR data.

The generated QR code is image-converted to be described later, so that the image-converted QR code is stored in the memory 120 and printed on the object itself by the output device 140. The object includes a curved body, and an example of a curved body is an egg. In the case of a curved body such as an egg, the radius of curvature at points along the curved surface of the egg has a different oval shape, and the present invention can use a technique of printing a QR code on the curved body itself, for example, the egg itself. have.

Hereinafter, an image conversion process for a QR code according to an embodiment of the present invention will be described in detail through FIG. 2.

The original QR code generated based on the QR data and before the image conversion processing (hereinafter, referred to as'first QR code') 300 is a first indicating the length from the center of the first QR code in the first direction. 1 length, a second length indicating a length in a second direction perpendicular to the first direction from the center of the first QR code, and a third direction that is a diagonal direction in the first direction and the second direction from the center of the first QR code Includes a third length indicating the length of the furnace. For example, if the size of the QR code is 1X1 cm ² , the first length is 0.5 cm, the second length is 0.5 cm, and the third length is about 0.71 cm. The size of the QR code may be selected within the range of 1X1 cm ² to 1.2X1.2 cm ² .

In addition, the image is converted from the first QR code, and the rounded QR code (hereinafter referred to as a “second QR code”) to be printed on the curved body itself 400 is the center of the second QR code 400. A fourth length indicating a length in a first direction from, a fifth length indicating a length in a second direction from the center of the second QR code 400, and a third direction from the center of the second QR code 400 Includes a sixth length indicating the length of.

In order to print the image-transformed QR code on the curved body itself, such as the egg shell, and to recognize the QR code normally without errors using the camera of a general user terminal, it is necessary to transform the QR code from square to convex on each side. have. Accordingly, the fourth and fifth lengths of the second QR code 400 are respectively larger than the first and second lengths of the first QR code 300, and the fourth and fifth lengths of the second QR code 400 5 lengths are substantially equal to each other. In addition, the sixth length of the second QR code 400 and the third length of the first QR code 300 are substantially the same as each other.

As described above, the fourth and fifth lengths of the second QR code 400 are larger than the first and second lengths of the first QR code 300, respectively, and the fourth length of the second QR code 400 The length and the fifth length are substantially equal to each other, and this length conversion is performed based on the following equations (1) to (3).

Equation (1):

,

Equation (2):

,

Equation (3):

,

In equation (1), x _u is the first length, x _d is the fourth length, and α is the first weight for the first direction.

In equation (2), y _u is the second length, y _d is the fifth length, and β is the second weight for the second direction.

In equation (3), r _u is the third length, r _d is the sixth length, and γ is the third weight for the third direction.

The fourth and fifth lengths of the second QR code 400 are larger than the first and second lengths of the first QR code 300, respectively, and the fourth and fifth lengths of the second QR code 400 Is substantially equal to each other, so α and β are greater than 0, and α and β are substantially equal to each other. However, even if the fourth and fifth lengths of the second QR code 400 are larger than the first and second lengths of the first QR code 300, respectively, the maximum value is the first of the first QR code 300. It is about 1.4 times the length of 1 and the second length, preferably 1.3 times. Thus, α and β are greater than 0 and less than 0.25. Further, since the sixth length of the second QR code 400 and the third length of the first QR code 300 are substantially equal to each other, γ is substantially zero.

After determining the first to third weights described above, the first QR code 300 is divided into a grid. For example, the first QR code 300 may be divided into 5X5 to 100X100, preferably 10X10. Even in one egg, there may be an area with a large radius of curvature and an area with a small radius of curvature. In addition, the radius of curvature at the top of the egg may be different depending on the size of the egg, that is, large egg, medium egg, and turbulence.

However, since all of the surfaces of the curved body where the QR code is to be printed in common have a convex shape, the length of the gratings in the first direction and the second direction passing through the center of the first QR code 300 is maximized. The length change can be gradually reduced as it increases, and the distance from these grids.

Therefore, as the distance from the center of the first QR code 300 in the first direction and the opposite direction, the second weight is reduced from β to 0, and the second direction and the opposite direction from the center of the first QR code 300 The first weight can be reduced from α to 0 as the distance increases. In addition, the first weight may be equally applied to grids that are collinear in the first direction, and the second weight may be equally applied to grids that are collinear in the second direction.

When decreasing the first weight from α to 0, or decreasing the second weight from β to 0, for the reference direction (i.e., the first direction and the opposite direction, respectively, or the second direction and the opposite direction) As spaced apart, the first weight or the second weight may be linearly decreased, or exponentially may be decreased.

In addition, as the radius of curvature at the center of the curved body on which the second QR code 400 is to be printed decreases, the first weight and the second weight are reduced, and the radius of curvature at the center of the curved body on which the second QR code 400 is to be printed is The smaller the number, the higher the first weight and the second weight. That is, the first weight and the second weight when the radius of curvature at the center of the curved body on which the second QR code 400 is to be printed are small are larger than the first weight and the second weight when the radius of curvature is large, respectively. I can.

In addition, in the image conversion processing according to an embodiment of the present invention, the second QR code 400 is stored in the memory 120 only when the length-transformed degree (eg, ratio) of the above-described grid is within a predetermined value. When the length of the grid is converted and the length of the grid exceeds a predetermined value, the first weight and the second weight are adjusted at least once by feedback, so that the length of the grid is within a predetermined value. Only the second QR code 400 may be stored in the memory 120.

Specifically, it is determined whether the first ratio value of the fourth length of the second QR code 400 to the first length of the first QR code 300 is less than or equal to a first predetermined value, and the first ratio value is the first If it is less than a predetermined value, the second QR code 400 is stored in the memory 120, and if the first ratio value exceeds the first predetermined value, the first weight is decreased and a new generated through image conversion process By calculating the fourth length of the second QR code 400, whether the ratio value of the fourth length of the new second QR code 400 to the first length of the first QR code 300 is less than or equal to the first predetermined value You can judge again.

In addition, it is determined whether the second ratio value of the fifth length of the second QR code 400 to the second length of the first QR code 300 is less than or equal to the first predetermined value, and the second ratio value is the first preset value. If it is less than the predetermined value, the second QR code 400 is stored in the memory 120, and if the second ratio value exceeds the first predetermined value, the second weight is decreased and a new product generated through image conversion processing is performed. 2 By calculating the fifth length of the QR code 400, whether the ratio value of the fifth length of the new second QR code 400 to the second length of the first QR code 300 is less than or equal to the first predetermined value. I can judge.

The first predetermined value may be selected within the range of 1 to 1.4. Preferably, 1.3 may be selected as the first predetermined value.

In addition, in the image conversion processing according to an embodiment of the present invention, the ratio of the area of the second QR code 400 and the area of the first QR code 300 generated according to the above-described grid length conversion is within a predetermined value. Only in the case of the second QR code 400 is stored in the memory 120, and when the ratio of the above-described area exceeds a predetermined value, the first weight and the second weight adjustment by feedback are performed at least once or more. As a result, the second QR code 400 may be stored in the memory 120 only when the ratio of the new area is within a predetermined value.

Specifically, the area of the first QR code 300 and the area of the second QR code 400 are respectively calculated, and a ratio value of the area of the second QR code 400 to the area of the first QR code 300 It is determined whether it is less than or equal to the second predetermined value, and if the ratio value is less than or equal to the second predetermined value, the second QR code 400 is stored in the memory 120, and when the ratio value exceeds the second predetermined value, , The new second QR code 400 for the area of the first QR code 300 is calculated by reducing the first weight and the second weight and calculating the area of the new second QR code 400 generated through image conversion processing. It may be determined again whether the ratio value of the area of) is less than the second predetermined value.

The second predetermined value may be selected within the range of 1 to 1.4.

In addition, as the radius of curvature at the center of the curved body on which the second QR code 400 is to be printed decreases, the ratio of dividing the first QR code 300 into a grid shape is reduced, and the curved body on which the second QR code 400 is to be printed As the radius of curvature at the center of is smaller, the ratio of dividing the first QR code 300 into a grid shape may be increased. Accordingly, the QR recognition rate can be increased by selecting an appropriate division ratio according to the size of the curvature radius.

After generating the second QR code 400 by dividing the first QR code 300 into a grid shape and performing image conversion processing according to length conversion on the grid, anti-aliasing technology is applied to Vigilance can be relaxed. That is, by processing the boundary between the grids to be smooth, it is possible to increase the QR recognition rate in a curved body such as an egg.

If the square-shaped first QR code is printed on the curved egg itself and then recognized as a user terminal such as a general smartphone, errors such as not being properly recognized may occur. However, according to the present invention, the rounded second QR code obtained by converting the image of the first QR code is printed on the egg itself, so that even if it is recognized as a user terminal such as a general smartphone, it is possible to print accurately and quickly.

Hereinafter, a block chain according to an embodiment of the present invention will be described in detail through FIG. 3.

A food distribution system according to an embodiment of the present invention may include a plurality of user terminals 500-1, 500-2, 500-3, and 500-4 capable of recognizing a QR code. Each of the plurality of user terminals 500-1, 500-2, 500-3, and 500-4 is, for example, an administrator's user terminal 500-1, a producer's user terminal 500-2, and a distributor's user. It may be a terminal 500-3 or a user terminal 500-4 of a consumer. 3 is for illustrative purposes only, showing the user terminal 500-1 of the administrator, the user terminal 500-2 of the producer, the user terminal 500-3 of the distributor, and the user terminal 500-4 of the consumer However, each user terminal may be plural.

The server 200 may be composed of a plurality of servers performing each function in the food distribution system, or may be composed of a single server performing a plurality of functions. The server 200 may be a server corresponding to a plurality of nodes N1, N2, N3, N4 of the block chain 600, or a server that manages each node of the block chain 600. In addition, the server 200 may manage the food distribution system through communication with the database, and may back up transaction information of the block chain 600.

In addition, when the plurality of user terminals 500-1, 500-2, 500-3, and 500-4 recognize the first QR code 300 or the second QR code 400, Food information can be accessed and a transaction composed of food information can be transmitted to the blockchain 600. Specifically, the transaction may include the generation, change, and disposal of food information, and a plurality of user terminals 500-1, 500-2, 500-3, and 500-4 may transfer such transactions to the blockchain 600 and / Or it can be transmitted to the server 200. In addition, food information to be described later may include production information, history information and location information, and production information may include the type of food, country of origin, content, grade determination date, packaging date, expiration date, storage method and temperature, producer, and salesperson. , And a phone number of a consumer counseling office.

A plurality of nodes (N1, N2, N3, N4) transmits an operation of receiving a newly generated transaction, an operation of creating a block containing it, and a request to add the generated block to the block chain 600 to another node. At least one of an operation of performing an operation or an operation of adding a corresponding node to the block chain 600 owned or accessed by verifying the block addition request received from another node according to a predetermined consensus algorithm may be performed.

The block chain 600 may be linked with at least one or more of a plurality of user terminals 500-1, 500-2, 500-3, and 500-4 through a plurality of nodes N1, N2, N3, and N4. . Each user terminal (500-1, 500-2, 500-3, 500-4) may function as a node by directly performing at least one of the above-described node operations, or directly perform the above-described node operation. It is connected to a node included in the block chain 600 to perform such a function, and transmits a request to trigger the function of the above node to the node, and interlocks with the block chain 600 by receiving a response thereto. It could be. That is, the plurality of user terminals 500-1, 500-2, 500-3, and 500-4 may each be a plurality of nodes N1, N2, N3, N4, or a plurality of nodes N1, N2, and N3, N4) can also be connected

Each block constituting the block chain 600 according to an embodiment of the present invention may be connected in the form of a hash chain. That is, the nth block may store the hash value of the n-1th block. Therefore, a change of information of one block results in a change of the hash value of the block calculated from the block, which results in a change of the contents of the next block. It can lead to changes. Here, the hash value may be calculated by a hash function that converts data of an arbitrary size into data having a predetermined size, and for example, a hash function selected as needed such as MD5, SHA1, or SHA2 may be used.

A block according to an embodiment of the present invention may include at least one or more transactions. In an embodiment, a block may represent time information related to a block and/or a transaction (eg, block creation time, block change time, and block discard time).

A transaction according to an embodiment of the present invention includes a plurality of nodes in which each subject interlocked with the block chain 600, that is, a plurality of user terminals 500-1, 500-2, 500-3, 500-4 ( It can be configured according to information from N1, N2, N3, N4). For example, registration/change/discarding of specific information requested by a plurality of user terminals 500-1, 500-2, 500-3, and 500-4 may be configured as a single transaction. And the generation of such a transaction may be performed in a plurality of user terminals 500-1, 500-2, 500-3, 500-4, and a plurality of user terminals 500-1, 500-2, 500-3, 500 It may be made in a plurality of nodes (N1, N2, N3, N4) of the block chain 600 that has received specific information from -4).

Each transaction according to an embodiment of the present invention may be digitally signed and/or verified using a private key method. To this end, information according to the transaction may be included in the transaction in a private key method or provided to a plurality of nodes N1, N2, N3, and N4 through different paths. In addition, the plurality of nodes N1, N2, N3, and N4 may verify the validity of the corresponding transaction by using the private key. In addition, ownership of the transaction or association with the transaction may be proved through a private key held by the owner of the transaction or a person involved in the creation of the transaction. These private keys may be generated and/or managed by an administrator.

A plurality of user terminals (500-1, 500-2, 500-3, 500-4) linked with the block chain 600 according to an embodiment of the present invention and/or a plurality of users participating in the block chain 600 Nodes N1, N2, N3, and N4 may generate a transaction and transmit and/or broadcast it to nodes participating in the blockchain 600.

All or some of the nodes participating in the block chain 600 according to an embodiment of the present invention may generate a new block including at least one or more transactions newly generated in the block chain 600. In addition, the node can verify the validity of the corresponding transaction and can make requests to add a newly created block to the existing blockchain 600 to other nodes. The nodes of the block chain 600 that have received the request verify the validity of the transaction and/or block according to a predefined consensus algorithm, and if the verification is successful, the block chain 600 that the user owns or accesses the block. Can be added to

Block chain 600 according to an embodiment of the present invention is preferably operated in the form of a permissioned block chain (Permissioned Block Chain) for the security of food distribution. In the permissioned blockchain, only authorized participants can access the blockchain 600, and privileges can be set for the access. As a form of such a permissioned blockchain, Hyperledger blockchain can be used.

In food distribution by using the above-described block chain 600 system, food information is registered in the block chain 600, and the information is shared and managed with producers, distributors and consumers, thereby ensuring the integrity and clarity of information. can do. Through this, it is possible to prevent intermediary merchants from buying and selling stores, dramatically improve cold chain logistics, and prevent forgery and falsification of information.

Hereinafter, through FIG. 4, a food distribution method according to an embodiment of the present invention will be described in detail. At least one processor to be described later may be the same as or different from the processor 110 described above. Further, the server to be described later may be the same as the server 200 described above, or may be different.

At least one processor may generate the first QR code 300 based on the QR data received from the server according to the production command (S1). The first QR code 300 may include food information of food.

Also, at least one processor may perform encryption by applying a data encryption algorithm to the QR data in three steps after generating the first QR code 300 and before generating the second QR code 400. The three-step application of the data encryption algorithm can be performed using a 64-bit key, and the 64-bit key can be used for later decryption.

Also, at least one processor may generate the second QR code 400 by performing image conversion processing on the first QR code 300 (S2). After that, through the QR code printing device 100, the second QR code 400 may be printed on the curved food itself, for example, the egg itself, and the first QR code 300 may be printed on the packaging paper and It can be printed on at least one of the packaging boxes (S3). The first QR code 300 is not limited to the packaging paper and the packaging box of the food, but is flat and can be printed anywhere it is necessary to display food information of the food.

In addition, through the first QR code 300 and the second QR code 400, food information including food production information, history information, and location information is transmitted to a plurality of user terminals 500-1, 500-2, 500- 3, 500-4) can be provided (S4). The food information may further include not only food production information, history information, and location information, but also production photos, farmhouse photos, food grade information and authentication information, and food recipes using big data to be described later.

In addition, at least one processor may register a block including a transaction composed of food information in the block chain 600 (S5). Here, a plurality of blocks may be connected in the form of a hash chain.

In addition, at least one processor transmits a transaction occurring in one of a plurality of nodes (N1, N2, N3, N4) registered in the block chain 600 to a plurality of nodes (N1, N2) registered in the block chain 600. , N3, N4), so that the transaction can be shared by a plurality of nodes N1, N2, N3, and N4 (S6). Transactions can include the creation, transformation and destruction of food information.

At least one of the food on which the second QR code 400 is printed, and the packaging paper and the packaging box on which the food is printed and the first QR code 300 is printed, if the food is an egg, will be shipped from the hatchery, which is the production site of the egg. I can. Thereafter, eggs may be distributed through farms including laying hen farms, Grading and Packing Centers, distributors, and sales outlets. The user terminal used in these places may be a user terminal 500-1 of an administrator, a user terminal 500-2 of a producer, and a user terminal 500-3 of a distributor. In addition, eggs distributed through this route may be sold to consumers, and in this case, the terminal used by the consumer may be the consumer's user terminal 500-4.

When the first QR code 300 or the second QR code 400 is recognized by the plurality of user terminals 500-1, 500-2, 500-3, 500-4, the user terminal ( The decryption is performed in the server 200 to which the 500-1, 500-2, 500-3, 500-4) is connected, and a plurality of user terminals (500-1, 500-2, 500-3, 500-4) The location of and the number of times that the plurality of user terminals 500-1, 500-2, 500-3, and 500-4 recognized the first QR code 300 or the second QR code 400, a plurality of user terminals ( IDs of 500-1, 500-2, 500-3, 500-4) may be collected. Here, the ID of the user terminal may include a unique number of the user terminal. In addition, when the first QR code 300 or the second QR code 400 is recognized by the plurality of user terminals 500-1, 500-2, 500-3, 500-4, the plurality of user terminals ( 500-1, 500-2, 500-3, 500-4) can collect more IP addresses. Specifically, decryption determines whether the 64-bit key used at the time of encryption and the 64-bit key stored in the server (eg, stored procedure) are the same, and if the keys do not match, the QR code is judged as a fake. can do.

Here, in the distribution process of food, for example, eggs, a production location, a delivery destination, and a sales destination, etc., in the case of normal distribution may be set and stored in advance. Thus, for example, the distributor's user terminal 500-3 may include a first user terminal and a second user terminal. Here, the first user terminal is a terminal that recognizes a normally distributed QR code (i.e., a genuine QR code), and the second user terminal is a user terminal compared with the first user terminal to determine whether to use a fake QR code. Can be At least one processor, when the location of the second user terminal exceeds a preset distance from the preset place, and the ID of the second user terminal is different from the ID of the first user terminal at the preset place, the second user terminal The first QR code 300 or the second QR code 400 recognized by may be determined as a fake. Here, the preset place may be a production place, a delivery place, a sales place, etc. previously set and stored as described above. In addition, the preset distance may be selected from 1 km to 20 km, and preferably may be 10 km. For example, despite the fact that eggs are stored at a normal delivery destination, a QR code identical to the QR code used (recognized) at the delivery destination is produced or used (recognized) in an area 10 km away from the delivery destination, and If an ID different from the user terminal that recognized the QR code is collected, it can be determined that a fake QR code is produced or used (recognized) through a user terminal having a different ID. In this case, a plurality of user terminals 500-1, 500-2, 500-3, 500-4, for example, the administrator's user terminal 500-1 and the distributor's user terminal 500-3 ), a push alarm that a fake QR code is produced or used (recognized) can be provided.

In addition, at least one processor, when the location of the second user terminal does not exceed a preset distance from the preset place, the second user terminal recognizes the first QR code 300 or the second QR code 400 If the number of times exceeds the preset number, and the ID of the second user terminal is different from the ID of the first user terminal at the preset place, the first QR code 300 or the second recognized by the second user terminal The QR code 400 can be determined as a fake. Here, the preset number of times may be selected from 10 to 1,000 times, preferably 100 times. For example, eggs are being stored in a normal place of delivery, but a QR code identical to that used (recognized) by that supplier is produced or used (recognized) 100 times near that supplier (for example, less than 1 km). , If the supplier produces or uses (recognized) 100 times with a user terminal with an ID different from the user terminal that recognized the QR code, it is determined that a fake QR code is produced or used (recognized) through a user terminal with a different ID. I can. In this case, a plurality of user terminals 500-1, 500-2, 500-3, 500-4, for example, the administrator's user terminal 500-1 and the distributor's user terminal 500-3 ), a push alarm that a fake QR code is produced or used (recognized) can be provided.

In addition, at least one processor, the location of the second user terminal does not exceed a preset distance from the preset place, the second user terminal recognizes the first QR code 300 or the second QR code 400 When the number of times does not exceed the preset number of times, the first QR code 300 or the second QR code 400 recognized by the second user terminal may be determined as authentic. In addition, at least one processor, the number of times that the location of the second user terminal exceeds a preset distance from the preset place, or the second user terminal recognizes the first QR code 300 or the second QR code 400 Even if the number exceeds the preset number, if the ID of the second user terminal is the same as the ID of the first user terminal in the preset place, the first QR code 300 or the second recognized by the second user terminal The QR code 400 can be determined as authentic.

Thus, the food distribution system according to an embodiment of the present invention performs encryption and decryption steps for the QR code, thereby preventing the distribution of fake food by forging and falsifying the QR code, and providing authentic food to consumers. Can provide.

Hereinafter, through FIG. 5, an exemplary program screen providing information on production of food according to an embodiment of the present invention will be described in detail.

As shown in Figure 5, the production information may include information such as the type of livestock product, the place of origin, the amount of food, the date of grade determination, the date of packaging, the expiration date, the storage method and temperature, the producer, the salesperson, and the telephone number of the consumer consultation office. I can. In addition, it may contain necessary production information depending on the food.

Hereinafter, an exemplary program screen for providing food history information according to an embodiment of the present invention will be described in detail through FIGS. 6A and 6B.

In the food distribution system according to an embodiment of the present invention, a temperature/humidity sensor may be installed in at least one of a packaging box of food, a box and a warehouse in which food is stored, and a loading box of a vehicle that moves food. The temperature/humidity sensor is not limited thereto, and may be installed anywhere a temperature and humidity of an environment in which food is stored can be measured.

At least one processor measures the temperature and humidity of the environment in which food is stored in real time by a temperature/humidity sensor, and when the environment in which food is stored changes, when the food is moving to another place, and When it is at least one of when moving to the place is completed, the temperature and humidity of the environment where food is stored is measured, and the information is transmitted to a plurality of user terminals 500-1, 500-2, 500-3, and 500-4. ) Can be provided by schedule (eg, date). The temperature/humidity sensor is not limited thereto, and can measure and record the surrounding temperature and humidity in real time. The above-described history information may include information on temperature and humidity of an environment in which food is stored.

In addition, when the environment in which the food is stored changes, if the temperature or humidity changes by exceeding a preset threshold (eg, 10% upper and lower limits from the reference value), at least one processor 2 A push alarm can be provided to all user terminals that have recognized the QR code 400 and the first QR code 300 printed on the packaging paper or packaging box of food. Accordingly, when an abnormality in the environment in which food is stored occurs, a push alarm is provided to a producer or distributor related thereto, thereby enabling a quick response.

In addition, the temperature/humidity sensor includes a GPS function that recognizes and/or records the location coordinates where the temperature/humidity sensor is located in real time, and when measuring the temperature and humidity of the environment where food is stored, the temperature/humidity sensor Position coordinates to be located can be recognized and/or recorded. Here, the location information includes location coordinates, and the at least one processor transmits location information indicated by points and/or lines in which location coordinates are continuous on a map, and the plurality of user terminals 500-1, 500-2, 500-3 , 500-4).

Hereinafter, an exemplary program screen for providing a food recipe according to an embodiment of the present invention will be described in detail through FIG. 7.

At least one processor collects cache from a plurality of user terminals 500-1, 500-2, 500-3, and 500-4 to form big data including the user's age and internet search history, and From the data, a user-customized recipe may be provided to the plurality of user terminals 500-1, 500-2, 500-3, and 500-4 in consideration of the user's age, Internet search record, and environmental variables. In this case, the user terminal collecting the cache is not limited to the plurality of user terminals 500-1, 500-2, 500-3, and 500-4, and may include other user terminals. The environmental variables may include weather, season, whether or not broadcast through recent media, and frequency.

Hereinafter, through FIG. 8, an exemplary program screen indicating that a plurality of QR codes are recognized according to an embodiment of the present invention will be described in detail.

The at least one processor may be configured by a plurality of user terminals 500-1, 500-2, 500-3, and 500-4 by at least one first QR code 300 and/or at least one second QR code ( When 400 is dynamically photographed, the first QR code 300 and/or the second QR code 400 captured by the plurality of user terminals 500-1, 500-2, 500-3, 500-4 ) Can be recognized as multiple QR sensing. When recognizing a QR code using a user terminal, in normal cases, when one QR code is recognized in an image captured by the user terminal's camera, a screen on which the URL appears is created, allowing the user to use the URL. It only allows access to a connected website, etc., and does not search for additional QR codes when one QR code is recognized. However, according to an embodiment of the present invention, even if the user terminal dynamically recognizes one QR code from an image captured by moving the camera, that is, it is not limited to this, and at least one QR code captured in the corresponding image is It can be made more aware. For example, when a QR code is recognized in a captured image, the URL for this is stored in memory, and if there is an additional QR code by searching for an additional QR code in the image, the URL for this is also stored in the memory And, after recognizing all the QR codes in the corresponding image, a list of URLs stored in the memory may be provided to the user terminal. In other words, it is possible to recognize all QR codes captured in the captured image while moving the camera at once. A list of URLs corresponding to the first QR code 300 and/or the second QR code 400 recognized as a plurality of the plurality of user terminals 500-1, 500-2, 500-3, 500-4 By providing, food information can be provided for each list.

Thus, for example, when a plurality of foods are stored, in a box or in a warehouse, and in a refrigerator, when a user terminal is moved while photographing food through a camera, a plurality of QR codes can be recognized in plurality. Therefore, even when the packaging paper and the packaging box of the food are removed and then stored in a refrigerator, the food information of the food can be checked, and the food stored in plural can be quickly checked at a time without the need to check each food individually with a QR code.

In the above-described food distribution system, a computer program (eg, an application) stored in a medium is installed in a user terminal (eg, a smart phone) to be executed on an electronic device, thereby performing its function.

The embodiments of the present invention described above are disclosed for purposes of illustration, and the present invention is not limited thereto. In addition, those of ordinary skill in the technical field of the present invention will be able to make various modifications and changes within the spirit and scope of the present invention, and these modifications and changes should be viewed as belonging to the scope of the present invention.

100: device for printing a QR code

110: processor

120: memory

130: input device

140: output device

200: server

300: first QR code

400: second QR code

500-1: Administrator's user terminal

500-2: Producer's user terminal

500-3: distributor's user terminal

500-4: consumer's user terminal

600: blockchain

Claims (10)

1. In a food distribution system using a block chain,

   QR code printing device;

   A plurality of user terminals capable of recognizing QR codes;

   A plurality of nodes to which the plurality of user terminals are accessible;

   A block chain in which the plurality of nodes are registered;

   At least one processor; And

   When executed by the at least one processor, the at least one processor includes at least one memory that stores instructions that cause the at least one processor to perform an operation,

   The at least one processor,

   Generates a first QR code based on the QR data received from the server,

   Generate a second QR code by performing image conversion processing on the first QR code,

   Storing the second QR code in the memory,

   By the QR code printing device, the second QR code stored in the memory is printed on the food itself, which is a curved body, and the curved body includes an oval-shaped curved body having different radii of curvature at points along the curved surface,

   By the QR code printing device, printing the first QR code on at least one of the packaging paper and the packaging box of the food,

   When the first QR code or the second QR code is recognized by the user terminal, food information corresponding to the food is provided to the user terminal through a URL, and the food information includes production information, history information, and location. Includes information, and the production information includes the origin of the food, content, grade determination date, packaging date, expiration date, producer, and sales person -,

   A block containing a transaction consisting of the food information is registered in the block chain, and the block is connected in the form of a hash chain,

   The transaction occurring in one of the plurality of nodes registered in the block chain is transmitted to the plurality of nodes registered in the block chain, so that the transaction is shared by the plurality of nodes-the transaction is the Including the creation, change and disposal of food information -,

   In the image conversion processing, by maintaining the four vertices of the first QR code and transforming a line connecting the vertices into a convex shape, generating the second QR code capable of QR recognition even in the curved body,

   Food distribution system.
2. The method of claim 1,

   Further comprising a temperature/humidity sensor installed in at least one of the packaging box of the food, a box and a warehouse in which the food is stored, and a loading box of a vehicle that moves the food,

   The at least one processor measures the temperature and humidity of the environment in which the food is stored by the temperature/humidity sensor in real time,

   When at least one of when the environment in which the food is stored changes, when the food is moving to another place, and when the food has completed moving to another place, the temperature of the environment in which the food is stored, and the Measure the humidity and provide it to the user terminal,

   The history information includes the temperature and the humidity of the environment in which the food is stored,

   Food distribution system.
3. The method of claim 2,

   The temperature/humidity sensor includes a GPS function for real-time recognition of the location coordinates where the temperature/humidity sensor is located, and when measuring the temperature and the humidity of the environment in which the food is stored, the temperature/humidity sensor Recognize the location coordinates to be located,

   The location information includes the location coordinates,

   The at least one processor provides the user terminal with the location information in which the location coordinates are displayed as a continuous dot or line on a map,

   Food distribution system.
4. The method of claim 1,

   The at least one processor,

   After generating the first QR code and before generating the second QR code, encryption is performed by applying a data encryption algorithm to the QR data in three steps using a 64-bit key,

   When the first QR code or the second QR code is recognized by the user terminal, decryption is performed at the server to which the user terminal is connected through the URL, and the location of the user terminal and the user terminal Collecting the number of times the first QR code or the second QR code is recognized, the ID of the user terminal,

   Food distribution system.
5. In claim 4,

   The user terminal includes a first user terminal and a second user terminal,

   The at least one processor,

   When the location of the second user terminal exceeds a preset distance from a preset place, and the ID of the second user terminal is different from the ID of the first user terminal at the preset place, by the second user terminal Determine the recognized first QR code or the second QR code as a fake,

   When the location of the second user terminal does not exceed the preset distance from the preset place, the number of times the second user terminal recognizes the first QR code or the second QR code exceeds a preset number And, if the ID of the second user terminal is different from the ID of the first user terminal at the preset place, the first QR code or the second QR code recognized by the second user terminal Judged as a fake,

   The location of the second user terminal does not exceed the preset distance from the preset place, and the number of times the second user terminal recognizes the first QR code or the second QR code exceeds the preset number If not, the first QR code or the second QR code recognized by the second user terminal is determined as genuine,

   The location of the second user terminal exceeds the preset distance from the preset place, or the number of times the second user terminal recognizes the first QR code or the second QR code exceeds the preset number Even in the case, if the ID of the second user terminal is the same as the ID of the first user terminal at the preset place, the first QR code or the second QR code recognized by the second user terminal To judge as authentic,

   Food distribution system.
6. The method of claim 2,

   When the environment in which the food is stored changes, if the temperature or the humidity changes by exceeding a preset threshold, the at least one processor may include the second QR code printed on the food and the packaging paper of the food. Or providing a push alarm to all user terminals that have recognized the first QR code printed on the packaging box,

   Food distribution system.
7. The method of claim 1,

   The at least one processor,

   By collecting the cache from the user terminal, to form big data including the user's age and Internet search records,

   From the big data, in consideration of the user's age, the Internet search record, and environmental variables, providing a customized recipe to the user terminal,

   Food distribution system.
8. The method of claim 1,

   The at least one processor,

   When at least one of the first QR code, at least one of the second QR code, or a combination of at least one of the first QR code and at least one of the second QR code is dynamically photographed by the user terminal , Allowing the first QR code or the second QR code captured by the user terminal to be recognized as a plurality,

   Providing the food information for each of the list by providing a list of URLs corresponding to the plurality of recognized first QR codes or the second QR codes to the user terminal,

   Food distribution system.
9. In the food distribution method using a block chain,

   Generating a first QR code based on the QR data received from the server;

   Generating a second QR code by performing image conversion processing on the first QR code;

   Storing the second QR code in a memory;

   Printing the second QR code stored in the memory on the food itself, which is a curved surface, by a QR code printing apparatus, the curved body including an oval-shaped curved body having different radiuses of curvature at points along the curved surface;

   Printing the first QR code on at least one of a packaging paper and a packaging box of the food by the QR code printing device;

   When the first QR code or the second QR code is recognized by the user terminal, providing food information corresponding to the food through a URL to the user terminal-The food information includes production information, history information, and location Includes information, and the production information includes the origin of the food, the content, the grade determination date, the packaging date, the shelf life, the producer, and the sales person;

   Registering a block including a transaction consisting of the food information in the block chain, and connecting the block in the form of a hash chain; And

   Transmitting the transaction occurring in one node among the plurality of nodes registered in the block chain to the plurality of nodes registered in the block chain, so that the transaction is shared by the plurality of nodes-The transaction is the Including the creation, change and disposal of food information, and

   In the image conversion processing, by maintaining the four vertices of the first QR code and transforming a line connecting the vertices into a convex shape, generating the second QR code capable of QR recognition even in the curved body,

   Food distribution methods.
10. Stored in a medium for executing the food distribution method of claim 9 on an electronic device,

    Computer program.

Images