KR102383830B1 - Gas station device using smart contract - Google Patents

Abstract

The present invention relates to a gas station device utilizing a smart contract.
The present invention is provided with a fueling machine including an input unit for receiving a desired amount of alcohol to be injected from a vehicle driver, a payment processing unit for processing payment according to the desired amount of alcohol, and a flow rate sensor for measuring the actual amount of alcohol actually refueled in the vehicle and an oil tank including a water level sensor unit for measuring the level of the contents contained therein and a component measurement sensor unit for measuring the components of the contents contained in the oil tank is disclosed, and the transaction processing unit is the desired alcoholic beverage entered by the driver when refueling is finished at the fueling machine Disclosed is a gas station device for generating a transaction by using an actual amount of alcohol, a water level value, and a component value sensed by an amount, a flow sensor unit, a water level sensor unit, and a component measurement sensor unit.
According to the gas station device using the smart contract according to the present invention, when the block chain is used, the need for a refinery and the Korea Petroleum Service to send a person to each gas station one by one to check whether an illegal act has occurred is greatly reduced.

Description

Gas station device using smart contract {GAS STATION DEVICE USING SMART CONTRACT}

The present invention relates to a gas station device using a smart contract, and more specifically, a sensor unit is installed in an oil tank and a gas station, and the sensor value measured by the sensor unit is transacted on a block chain network to sell fake oil and quantity of oil. It is about a gas station device using a smart contract that can prevent fraudulent sales.

The existing oil sales verification process is well established from refineries to selling oil to gas stations. However, the process of managing oil after oil is sold to gas stations is insufficient. Taking advantage of this point, every year at gas stations, illegal acts of manufacturing and selling fake oil and selling the quantity of oil by cheating are taking place.

Korean Patent Publication No. 10-2015-0067752 (2015.06.18, published)

The present invention is intended to solve the above problems, and to provide a gas station system that can prevent illegal acts such as selling fake oil or manufacturing and selling fake oil when selling to general consumers at a gas station. do.

The above object of the present invention is a gas station device operated on a blockchain network, including a gas station, an oil tank, and a transaction processing unit. It includes a payment processing unit for payment processing and a flow rate sensor unit for measuring the actual amount of alcohol actually refueled in the vehicle, and the oil tank has a water level sensor unit for measuring the level of contents contained in the oil tank and a component measuring sensor for measuring the components of the contents contained in the oil tank The transaction processing unit uses the desired amount of alcohol input by the driver, the actual amount of alcohol sensed by the flow sensor unit, the water level sensor unit, and the component measurement sensor unit, the water level value, and the component value when the fueling is finished in the fueling machine. This can be achieved by the gas station device, characterized in that it generates a transaction.

The proposed gas station device further includes a gas station identifier for identifying the gas station device with other gas station devices connected to the block chain network, and generating a transaction using the gas station identifier when generating a transaction.

In the proposed gas station apparatus, the transaction processing unit further includes a time measuring unit for counting the time not to refuel using the gas station, and even if the count value exceeds a first predetermined time period, the desired amount of alcohol and the gas station identifier And, it is characterized in that the transaction is additionally generated using the amount of real liquor sensed by the flow sensor unit, the water level sensor unit, and the component measurement sensor unit, the water level value, and the component value.

Another object of the present invention is a gas station device operated on a blockchain network, including a gas station, an oil tank, and a transaction processing unit, and includes a gas station identifier for identifying the gas station device from other gas station devices connected to the blockchain network. includes an input unit for receiving an input of the desired amount of alcohol to be injected from the vehicle driver, a payment processing unit for processing payment according to the desired amount of alcohol, and a flow rate sensor unit for measuring the actual amount of alcohol actually refueled in the vehicle, and the oil tank is It includes a water level sensor unit that measures the level of all contents and a component measurement sensor unit that measures the components of the contents inside, and the transaction processing unit includes a desired amount of alcohol input by the driver when refueling is finished at the fueling machine, a flow rate sensor unit, and a water level sensor Even if a transaction is created using the actual amount, water level, and component value sensed by the sub and component measurement sensor unit, or when the period of not refueling using the lubricator exceeds the first predetermined time, the desired amount and flow rate It is characterized in that the transaction is generated by using the actual liquor amount, the water level value, and the component value sensed by the sensor unit, the water level sensor unit, and the component measurement sensor unit.

The gas station device according to the present invention further includes a gas station identifier for identifying the gas station device from other gas station devices connected to the block chain network, wherein the transaction processing unit also uses the gas station identifier when generating a transaction.

In the present invention, the blockchain network is a permissioned type, and the consensus method is a PoA (Proof of Authority) method.

Currently, there is no verification processor that confirms that an illegal activity occurred at a gas station, so it was difficult to identify illegal activities such as selling fake oil or selling less than the specified amount at a gas station.

According to the gas station device using the smart contract according to the present invention, when using the block chain, the need for refiners and the Korea Petroleum Administration to send people to each gas station one by one to check whether an illegal act has occurred is greatly reduced, and users can trust and use the gas station. location can be found. The introduction of such a system is expected to significantly reduce the number of victims of fraudulent sales of fake oil and quantity.

According to the gas station device using the smart contract according to the present invention, the amount of oil coming out of the gas station is measured with a sensor value and registered in the block chain. Because it is uploaded to the , you can trust the data. In addition, the operation of the verification result can be trusted because the smart contract performs the operation to check whether the oil has changed in a normal way with the measured sensor value. By providing a UI where the user can see the measured results, it is possible to know in advance whether an illegal act has occurred at a specific gas station before using it, and through this, it is possible to trust and use a gas station. Gas stations that sell oil honestly will also provide customers with data that can give them credit, so they can sell oil in a way that is different from those that have done illegal things.

1 is a block diagram of a block chain network in which a gas station device, which is an embodiment according to the present invention, is configured as a node.
Figure 2 is a view showing an example of the installation of the fueling machine, the oil tank and the control unit installed in the gas station.
3 is a block diagram of a gas station apparatus constituting a node according to the present invention.
Figure 4 is a flow chart showing a flow processed in the refueling device of the present invention.
5 is a flowchart illustrating the processing flow of a smart contract performed on a blockchain network according to the present invention.

The terms used in the present invention are only used to describe specific embodiments, and are not intended to limit the present invention. The singular expression includes the plural expression unless the context clearly dictates otherwise. In the present specification, terms such as “comprise” or “have” are intended to designate that a feature, number, step, operation, component, part, or combination thereof described in the specification exists, but one or more other features It should be understood that this does not preclude the existence or addition of numbers, steps, operations, components, parts, or combinations thereof.

In addition, in this specification, "on or on top of" means to be located above or below the target part, and does not necessarily mean to be located above the direction of gravity. Also, when a part of a region, plate, etc. is said to be “on or on” another part, it is not only when another part is in contact with or spaced “on or on” the other part, but also when another part is in the middle. Including cases where there is

In addition, in this specification, when a component is referred to as “connected” or “connected” with another component, the component may be directly connected or directly connected to the other component, but in particular It should be understood that, unless there is a description to the contrary, it may be connected or connected through another element in the middle.

Also, in this specification, terms such as first, second, etc. may be used to describe various elements, but the elements should not be limited by the terms. The above terms are used only for the purpose of distinguishing one component from another.

1 is a block diagram of a block chain network in which a gas station device, which is an embodiment according to the present invention, is configured as a node. In the blockchain network, the client 250 and the node 200 are connected, and it is formed as a validator that creates a block of the blockchain and proceeds with consensus.

The client 250 is a computing device that can access the block chain network and check the operating status of the gas station desired to be visited through a query. Since the blockchain network according to the present invention applies a private method, a computing device excluding a gas station having the necessary device specifications is connected to the blockchain network as a client and can search for necessary gas station information.

The node 200 represents a computing device composed of black dots connected to the block chain network in FIG. 1 , and refers to a gas station provided in a gas station having the configuration shown in FIGS. 2 and 3 . Although it is expressed that the gas station device is composed of a computing device, it is sufficient to obtain the data of the fueling machine 240 having the sensor unit shown in FIG. 3 , the oil tank 220 and each sensor unit and form it in a configuration that can make a transaction. For example, each sensor unit shown in FIG. 3 may be implemented to provide an IoT function and to provide a simple control operation unit to generate and broadcast a transaction using the sensing value directly from the sensor unit.

The blockchain network used in the present invention uses a consensus algorithm called PoA (Power of Authority). In a PoA-based network, some trusted nodes are given the authority to create a block, and when the generated blocks do not match, the authority of consensus is given to determine which block is a valid block. ) is called The PoA consensus method can reduce the number of nodes and reduce the time required for validation, and shorten the block generation cycle to enable fast transaction processing, but has the disadvantage of being relatively far from ‘decentralization’, the core concept of blockchain.

2 is a view showing an example of the installation of the fueling machine, the oil tank, and the control unit installed in the gas station. An oil tank 220 having an inlet pipe 221 and an outlet pipe 227 is buried under the ground surface 210 . The oil tank 220 is provided with a water level sensor unit 223 and a component measurement sensor unit 229 . A plurality of lubricators 240 are connected to the outlet pipe 227 , and a flow rate sensor unit 225 is provided at the end of the lubrication nozzle constituting the lubricator 240 to measure the actual fuel flow rate supplied to the vehicle. The gas station apparatus 200 is provided with a control unit 250 that performs calculation and control functions. As described below, the control unit 250 senses a plurality of sensor units whenever a refueling event occurs, and processes the sensed sensor values as transactions. and transmit it over the blockchain network.

3 is a block diagram of a gas station apparatus constituting a node according to the present invention. The gas station apparatus includes an oil tank 220 , a fueling machine 240 , and a transaction processing unit 250 .

The oil tank 220 is a place for temporarily storing oil to be refueled in a vehicle, and the oil tank 220 has an inlet pipe 221 , an outlet pipe 227 , a water level sensor unit 223 and a component measurement sensor unit 229 . is provided The inlet pipe 221 is a pipe used to introduce oil supplied from the oil tank lorry into the oil tank, and the outlet pipe 227 is connected to the lubricator 240 to supply the oil filled in the oil tank 220 to the lubricator 240 . It is a pipe used as a passage for outflow to The oil tank 220 is provided with a water level sensor unit 223 for detecting the oil level filled therein and a component measuring sensor unit 229 for analyzing the components of the oil filled therein.

The lubricator 240 is a device for supplying oil to an oil tank provided in a vehicle according to the instructions of a driver who wants to refuel, and the lubricator 240 is provided with an input unit, a display unit, a payment processing unit, an oiling nozzle and a flow rate sensor. The input unit is a module for receiving oil type selection, fueling amount, or fueling amount from the operator, and the display unit is a module for displaying information to be selected or refueling progress to the operator. The payment processing unit is a module that has a cash slot or a credit card payment unit and pays the price of oil refueled by the operator. A fueling nozzle is a nozzle for supplying oil supplied from an oiling machine to a vehicle in a state of being plugged into an oiling inlet of a vehicle, and is also called a fueling gun. The flow rate sensor unit 225 is a sensor unit that is mounted on the refueling nozzle and measures the amount of oil entering the vehicle oil tank through the refueling nozzle. In addition, whenever the fueling of the vehicle is finished, the fueling machine 240 generates an event indicating that the fueling is finished and notifies the event generator.

The transaction processing unit 250 includes a time measurement unit, an identifier storage unit, an event generation unit, a sensor data acquisition unit, and a transaction generation unit.

The time measuring unit is a module that counts the non-refueling time through the lubricator, generates an event to generate a transaction whenever the non-refueling time exceeds a first predetermined time, and outputs the generated event to the event generating unit. The identifier storage unit is a module that stores an identifier for identifying the fueling device with other fueling devices connected to the block chain network. The event generation unit checks whether an event occurs from the lubricator 240 or the time measurement unit, and when an event occurs, the flow sensor unit 225, the water level sensor unit 223 and the component measurement sensor unit 229 are sensed. The actual fueling amount actually refueled in the vehicle through the fueling nozzle, the level of oil remaining in the oil tank, and the component value of the oil stored in the oil tank are input to the sensor data acquisition unit, and a transaction is created in the transaction generation unit to create a blockchain network. Generates a control signal to transmit. In addition to the actual fuel flow, water level, and component values temporarily stored in the sensor data acquisition unit, the transaction generator calculates the desired fueling amount, which is the desired fueling amount (if an amount is entered, it is converted to the fueling amount) entered by the operator through the input part of the lubricator. It is a module that creates a transaction by using it and provides it to the blockchain network network.

4 is a flowchart showing a flow processed in the refueling device of the present invention. A flow processed in a gas refueling device forming a node will be described with reference to FIG. 4 .

It is checked whether the vehicle driver has refueled (ST110), and if refueled, the desired refueling amount input by the operator through the gas pump along with the identifier of the corresponding gas station, the actual refueling amount measured through the flow rate sensor unit, and the water level sensor unit of the oil tank And after acquiring the water level value and the component value measured by the component measurement sensor unit (ST120), a transaction is generated using it and transmitted over the block chain network (ST170).

If refueling does not occur in step ST110, measure the non-refueling time (the duration of not refueling, hereinafter referred to as the 'non-refueling period') (ST130), and check whether the non-refueling period exceeds the first predetermined time do (ST140). When the first predetermined time is exceeded in step ST140, the control unit of the gas station device sets the desired and actual fueling rates of the gas station to '0' values (ST150), while A transaction is generated by acquiring the measured water level value and component value (ST160) and transmitted (ST170). Of course, when an event for refueling occurs in any of steps ST130 and ST140, step ST120 is performed.

After step ST170, it is checked whether an exception has occurred. Exceptions include the case where new oil is supplied to the oil tank through the tank lorry and the case of cleaning the oil tank.

First, an exception case in which oil is supplied will be described. When oil flows into the oil tank from the tank lorry, the oil level in the oil tank rises. When refueling is finished, the gas station device operator inputs that an exception of 'refueling' has occurred. The control unit of the gas station device sets the desired and actual fuel flow at the gas station to a value of '0' (ST150), the contract refueling amount supplied from the tank lorry along with the identifier (contractual refueling amount through commerce rather than the measured value), and the The water level and component values measured by the water level sensor unit and the component measurement sensor unit are obtained (ST160), and a transaction is generated using the corresponding sensor value together with the value of 'refueling', which is an exception, and transmitted (ST170).

Next, an exception case of cleaning the oil tank will be described. Oil tank cleaning is carried out in the order of pumping out the oil filled in the tank lorry to the outside, cleaning and then refilling the drained oil. When cleaning is finished, the gas station device operator inputs that an exception called 'cleaning' has occurred. The control unit of the gas station device obtains the water level and component values measured by the water level sensor unit and the component measurement sensor unit of the oil tank together with the identifier while setting the desired fuel flow rate and the actual fuel flow rate of the gas station to a '0' value (ST160). ), a transaction is created using the sensor value along with the value of 'cleaning', which is an exception, and transmitted (ST170).

5 is a flowchart illustrating the processing flow of a smart contract performed on a blockchain network according to the present invention. When a transaction is input (ST210), it is checked whether the desired fueling value and the actual fueling value are '0' (ST220), and if the ST220 check result is true, it is checked again whether an exception is made (ST230).

If the ST230 check result is true, it is determined whether or not it corresponds to 'lubrication' among the exceptional situations (ST235), and if it corresponds to 'lubrication', it is determined whether fueling is normally performed according to Equation 1.

If the water level value and the component value satisfy Equation 1 within the error range, the gas station status value is displayed as 'normal refueling', and the existing water level value and the existing component value are updated using the latest water level value and the latest component value. Handle the situation (ST240). The next transaction input is processed (ST210). If Equation 1 is not satisfied within the error range in the lubrication situation, 'abnormal lubrication' is displayed, and the existing water level value and the existing component value are updated using the latest water level value and the latest component value (ST240), and then The transaction input is processed (ST210).

If the ST235 check result is false, if it corresponds to 'cleaning', it is determined whether oil is normally supplied according to Equation (2).

If the water level value and the component value satisfy Equation 2 within the error range, the gas station status value is displayed as 'normal cleaning', and the existing water level value and the existing component value are updated using the latest water level value and the new component value, cleaning exception Handle the situation (ST250). The next transaction input is processed (ST210). If Equation 2 is not satisfied within the error range in the cleaning situation, 'abnormal cleaning' is displayed, and the existing water level value and the existing component value are updated using the latest water level value and the latest component value (ST250), and then The transaction input is processed (ST210).

If any one of steps ST220 and ST230 is not satisfied, the gas station operation condition is calculated according to Equation 3 (ST255).

After the ST255 operation, it is determined whether the operation is 'normal operation' using whether all three conditions presented in Equation 3 are satisfied within the error range (ST260). If it is determined as 'normal operation', the existing water level value and the existing component value are updated using the latest water level value and the latest component value, and a transaction called 'normal' is generated for the gas station operation state (ST280), and the input of the next transaction is waited do (ST210).

If the ST260 step is not satisfied, the existing water level value and the existing component value are updated using the latest water level value and the latest component value, and a transaction called 'abnormal' is generated for the gas station operation status (ST280), and the input of the next transaction is waited do (ST210).

Abnormal operation will be analyzed in more detail. When the first condition of Equation 3 is not equal to 'desired fueling amount = actual fueling flow', it is generally less than 'desired fueling amount > actual fueling flow', which corresponds to refueling of less oil than the specified amount.

If the second condition of Equation 3 is not the same as 'Newest water level = Existing water level + Actual irrigation flow', it is divided into 'Newest water level > Existing water level + Actual irrigation flow' and 'Newest water level < Existing water level + Actual irrigation flow rate' can In the case of 'Latest water level value > Existing level value + Actual fuel flow', it can be estimated that foreign substances such as water have entered the oil tank and are in a diluted state. The 'latest water level value < existing water level value + actual fuel flow rate' can be estimated as a separate oil leak (stolen) while refueling is in progress.

If the third condition of Equation 3 is not the same as 'newest component value = existing water level value', it is possible to determine whether foreign substances such as water were introduced and diluted or oil with distinctly different components was introduced by comparing the latest component value with the existing component value. It can be used to determine whether

As described so far, the sensor values input from the various sensor units are recorded on the blockchain network by generating a transaction whenever there is a change or periodically, and are sent to the people (clients) who use the gas station as a web page or mobile phone app. By notifying the results when sending or querying, users can view the records and select and use reliable gas stations.

In addition, in order to correct data caused by sensor failure, etc., a consortium is formed between refineries and the Korea Petroleum Management Committee to operate a blockchain network. Through this, the effect of inspection on other refiners can also be expected.

In the present invention, the system used in the gas station oil verification system is as follows. The first proposed system uses a blockchain. The reason for using blockchain is to take advantage of the fact that it is difficult to manipulate data, which is the biggest characteristic of blockchain. By using these characteristics, the integrity of data can be guaranteed. Also, the blockchain uses the Permissioned format. For this reason, anyone can propose corrections to the contents recorded in the blockchain using a public-type blockchain. does not In addition, when using Public, it is necessary to go through an operation called proof of work, but since the proposed system is a system used by companies, there is no need to go through such unnecessary operation. to form a block on the blockchain using the proof-of-authority method.

Although preferred embodiments of the present invention have been described above using specific terms, such terms are only for clearly describing the present invention, and the embodiments and described terms of the present invention depart from the spirit and scope of the following claims. It is self-evident that various changes and changes can be made without being performed. Such modified embodiments should not be separately understood from the spirit and scope of the present invention, but should be considered to fall within the scope of the claims of the present invention.

200: gas station device 210: surface
220: oil tank 221: inlet pipe
223: water level sensor unit 225: flow sensor unit
227: outlet pipe 229: component measurement sensor unit
240: lubricator 250: control unit

Claims (7)

As a gas station device operating on a blockchain network,
Including a lubricator, an oil tank, and a transaction processing unit,
the lubricator
an input unit for receiving an input of a desired amount of alcohol to be injected from a vehicle driver;
a payment processing unit for processing payment according to the desired amount of alcohol; and
A flow sensor unit for measuring the actual amount of alcohol actually refueled in the vehicle
includes,
the oil tank
A water level sensor that measures the level of the contents contained in it, and
Ingredient measurement sensor unit that measures the ingredients of the contents inside
includes,
The transaction processing unit performs a transaction by using the desired amount of alcohol input by the driver, the actual amount of alcohol sensed by the flow sensor unit, the water level sensor unit, and the component measurement sensor unit, when the fueling is finished in the lubricator. Gas station device, characterized in that it generates.
According to claim 1,
A gas station device, further comprising a gas station identifier for identifying the gas station device from other gas station devices operating on the block chain network, wherein the transaction processing unit generates a transaction using the gas station identifier when generating a transaction.
3. The method of claim 2,
The transaction processing unit further includes a time measuring unit for counting the time not to refuel by using the gas lubricator, and even when the count value measured by the time measuring unit exceeds a first predetermined time period, the desired amount of alcohol and the A gas station device, characterized in that the transaction is additionally generated using the gas station identifier, the actual amount of alcohol sensed by the flow sensor unit, the water level sensor unit, and the component measurement sensor unit, the water level value, and the component value.
As a gas station device operating on a blockchain network,
Including a lubricator, an oil tank, and a transaction processing unit,
and a gas station identifier for identifying the gas station device from other gas station devices operating on the blockchain network,
the lubricator
an input unit for receiving an input of a desired amount of alcohol to be injected from a vehicle driver;
a payment processing unit for processing payment according to the desired amount of alcohol; and
A flow sensor unit that measures the actual amount of alcohol actually refueled in the vehicle
includes,
the oil tank
A water level sensor that measures the level of the contents and
Ingredient measurement sensor unit that measures the ingredients of the contents inside
includes,
The transaction processing unit performs a transaction by using the desired amount of alcohol input by the driver, the actual amount of alcohol sensed by the flow sensor unit, the water level sensor unit, and the component measurement sensor unit, when the fueling is finished in the lubricator. Even when the amount of time not generated or refueling using the lubricator exceeds the first predetermined time, the desired amount of alcohol, the actual amount of alcohol sensed by the flow sensor unit, the water level sensor unit, and the component measurement sensor unit, the water level value and the component A gas station device, characterized in that it creates a transaction using the value.
5. The method of claim 4,
The gas station apparatus of claim 1, wherein the transaction processing unit also uses the gas station identifier when generating a transaction.
6. The method of claim 3 or 5,
The block chain network is a gas station device, characterized in that it is a permissioned block chain network.
7. The method of claim 6,
The block chain network is a gas station device, characterized in that it is a PoA (Proof of Authority) type permission type block chain network.

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