KR20210027907A - Gas station device using smart contract - Google Patents

Abstract

The present invention relates to a gas station device utilizing a smart contract. The gas station device of the present invention includes: a lubricator including an input unit receiving a desired amount of fuel to be injected from a vehicle driver, a payment processing unit processing payment according to the desired amount of alcohol, and a flow rate sensor unit 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 contents contained therein and a component measuring sensor unit for measuring the components of the contents contained therein. The transaction processing unit generates a transaction using the desired amount of fuel input by the driver, the actual amount of fuel, the water level, and the component value sensed by the water level sensor unit and the component measurement sensor unit, when the fueling is finished at the gas station. According to the gas station device using the smart contract according to the present invention, when the blockchain is used, the need for oil refiners and Korea Petroleum Management Service to send people to each gas station one by one to check whether illegal activity 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, by installing a sensor unit on an oil tank and a lubricator, and transacting the sensor value measured by the sensor unit on a blockchain network, selling fake oil and quantifying oil. It is about gas station devices using smart contracts that can prevent the act of selling by cheating.

The existing oil sales verification process is well established from refiners to gas stations. However, after the oil was sold at gas stations, the process of managing oil is inadequate. Taking advantage of this, every year gas stations manufacture and sell fake petroleum and illegally sell oil by tricking the quantity of oil.

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

An object of the present invention is to solve the above problems, and to provide a gas station system capable of preventing illegal activities such as selling by cheating quantity when selling to general consumers at gas stations or by manufacturing and selling fake oil. do.

The above object of the present invention is a gas station device operating on a blockchain network, including a lubricator, an oil tank, and a transaction processing unit, the lubricator having an input unit for receiving a desired amount of alcohol to be injected from a vehicle driver, and a payment cost according to the desired amount of alcohol. It includes a payment processing unit that processes the payment and a flow sensor unit that measures the actual amount of liquor supplied to the vehicle, and the oil tank includes a water level sensor unit that measures the level of the contents contained in the oil tank, and a component measurement sensor that measures the components of the contents contained in the oil tank. The transaction processing unit uses the desired amount of liquor input by the driver, the flow sensor unit, the water level sensor unit, and the actual alcohol amount sensed by the component measurement sensor unit, when refueling is terminated at the lubricator. This can be achieved by a gas station device, characterized in that the transaction is generated.

The proposed gas station device further includes a gas station identifier for identifying the gas station device from other gas station devices connected to the blockchain network, and generates a transaction using the gas station identifier when creating a transaction.

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

Another object of the present invention is a gas station device operating on a blockchain network, including a gas tanker, an oil tank, and a transaction processing unit, including a gas station identifier for identifying the gas station device from other gas station devices connected to the blockchain network, and Includes an input unit that receives a desired amount of liquor to be injected from the vehicle driver, a payment processing unit that processes payment according to the desired amount of liquor, and a flow sensor unit that measures the actual amount of liquor actually supplied to the vehicle. It includes a water level sensor that measures the level of the contents and a component measurement sensor that measures the components of the contents, and the transaction processing unit includes the desired amount of liquor input by the driver, flow sensor unit, and water level sensor when refueling is terminated at the lubricator. The desired amount of liquor and flow rate are generated even when a transaction is generated using the real liquor volume, water level and ingredient values sensed by the sub and ingredient measurement sensor unit, or the time not to refueling using a lubricator exceeds the first preset time. It is characterized in that a transaction is generated using the actual liquor amount, water level value, and 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 blockchain network, and the transaction processing unit also uses the gas station identifier when creating a transaction.

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

Currently, there is no verification processor to confirm that an illegal activity has occurred at gas stations, so it was difficult to identify illegal activities such as selling fake oil at gas stations or selling in less than the amount of quantity.

According to the gas station device using the smart contract according to the present invention, when using a block chain, the need for oil refiners and the Korean Petroleum Administration to check whether illegal activity has occurred by sending people one by one to gas stations is greatly reduced, and users can trust and use gas stations. You will be able to know the location. The introduction of such a system is expected to significantly reduce the number of people who are victims of cheating and selling fake oil and oil.

According to the gas station device using the smart contract according to the present invention, when the amount of oil exiting and entering the gas station is measured with a sensor value and registered in the blockchain, the data is directly measured with a sensor rather than a third party, and the blockchain network Because it is uploaded to, you can trust the data. In addition, since the smart contract performs an operation that checks whether oil has fluctuated in a normal way with the measured sensor value, the operation on the verification result can be trusted. By providing a UI that allows the user to view the measured results, it is possible to know in advance whether an illegal activity has occurred at the gas station before using a specific gas station, and through this, the gas station can be trusted and used. Since gas stations that sell oil honestly also provide data that can give credit to customers, they are able to sell oil differently from gas stations that have committed illegal activities.

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

The terms used in the present invention are used only to describe specific embodiments, and are not intended to limit the present invention. Singular expressions include plural expressions unless the context clearly indicates otherwise. In the present specification, terms such as "comprise" or "have" are intended to designate the presence of features, numbers, steps, actions, components, parts, or combinations thereof described in the specification, but one or more other features. It is to be understood that the presence or addition of elements or numbers, steps, actions, components, parts, or combinations thereof does not preclude in advance.

In addition, in the present specification, the term "on or on the top" means to be positioned above or below the target portion, and does not necessarily mean to be positioned on the upper side with respect to the direction of gravity. In addition, when a part of a region, plate, etc. is said to be "on or on" another part, it is not only in contact with or spaced apart from the other part "directly on or on", as well as another part in between. Includes cases where there is.

In addition, in the present specification, when one component is referred to as "connected" or "connected" to another component, the one component may be directly connected or directly connected to the other component, but specially It should be understood that as long as there is no opposite substrate, it may be connected or may be connected via another component in the middle.

In addition, in the present specification, terms such as first and second may be used to describe various components, but the components should not be limited by the terms. The above terms are used only for the purpose of distinguishing one component from another component.

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

The client 250 is a computing device that can access the blockchain network and check the operation status of a gas station desired to be visited through a query. Since the blockchain network according to the present invention applies a private method, computing devices other than gas stations with necessary device specifications are connected to the blockchain network as clients to search for necessary gas station information.

The node 200 indicates a computing device composed of black dots connected to a block chain network in FIG. 1 and refers to a gasoline device provided in a gas station having the configuration as shown in FIGS. 2 and 3. Although it was expressed that the gas station device is composed of a computing device, it is sufficient to form a configuration capable of acquiring and transacting data of the lubricator 240, the oil tank 220, and each sensor unit having the sensor unit shown in FIG. 3. For example, it is possible to implement an IoT function for every sensor unit shown in FIG. 3 and 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 Power of Authority (PoA). In the PoA-based network, the authority to create blocks is given to some trusted nodes, and if the generated blocks do not match, the authority of consensus is given to determine which block is a reasonable block, and the node responsible for these functions is given as validators. ). PoA consensus method can reduce the time required for validation by reducing the number of nodes, and shorten the block generation cycle to enable fast transaction processing, but has a disadvantage that is relatively far from'decentralization', which is the core concept of the blockchain.

2 is a diagram showing an installation example of a lubricator, an oil tank, and a control unit installed at a 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 sensor unit 225 at the end of the lubricating nozzle constituting the lubricator 240 is provided to measure the actual injection flow rate supplied to the vehicle. The gas station device 200 is provided with a control unit 250 that performs calculation and control functions. As described later, the control unit 250 senses a plurality of sensor units whenever a gasoline event occurs, and processes the sensed sensor values as a transaction. And transmit it over the blockchain network.

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

The oil tank 220 is a place to temporarily store oil to be lubricated in a vehicle, and the oil tank 220 includes an inlet pipe 221, an outlet pipe 227, a water level sensor unit 223, and a component measurement sensor unit 229. Is equipped. The inlet pipe 221 is a pipe used to introduce the oil supplied from the oil tank lorry into the oil tank, and the outlet pipe 227 is connected to the lubricator 240 to feed the oil filled in the oil tank 220 into the lubricator 240. It is a pipe used as a passage to discharge into. The oil tank 220 is provided with a water level sensor unit 223 for sensing the level of the oil filled therein, and a component measurement sensor unit 229 for analyzing the components of the filled oil.

The lubricator 240 is a device for supplying oil to an oil tank provided in a vehicle according to an instruction 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 oil nozzle, and a flow sensor unit. The input unit is a module that receives oil type selection, fueling amount, or fueling amount from the operator, and the display unit is a module for displaying contents to be selected or fueling progress to the operator. The payment processing unit is a module that has a cash input port or a credit card payment unit and pays for the oil price that the operator supplies. The oil nozzle is a nozzle for supplying the oil supplied from the lubricator to the vehicle while it is plugged into the oil injection port of the vehicle, and is also called a lubricating gun. The flow sensor unit 225 is a sensor unit that is mounted on the oil nozzle and measures the amount of oil that enters the vehicle oil tank through the oil nozzle. In addition, the lubricator 240 generates an event indicating that the refueling has ended whenever refueling to the vehicle is ended and notifies the event generation unit.

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

The time measurement unit is a module that counts the time not to be refueled through the lubricator, generates an event to generate a transaction whenever the time not to be refueled exceeds a first predetermined time, and outputs it to the event generator. The identifier storage is a module that stores an identifier for identifying the gasoline device with other gasoline devices connected on the blockchain network. The event generation unit checks whether an event occurs from the lubricator 240 or the time measurement unit, and when an event occurs, it senses the flow sensor unit 225, the water level sensor unit 223, and the component measurement sensor unit 229. The actual fueling amount actually lubricated to the vehicle through the fueling nozzle, the level of oil remaining in the oil tank, and the oil component value stored in the oil tank are entered into the sensor data acquisition section, and a transaction is created in the transaction generation section to create a blockchain network. It generates a control signal to transmit. The transaction generation unit calculates the desired fuel flow, which is the amount of fuel that the operator wants to fuel input through the input part of the lubricator (if the amount is entered, this is converted into the fuel flow amount), along with the actual fuel flow, water level, and component values temporarily stored in the sensor data acquisition part. It is a module that creates a transaction by using it and provides it to the blockchain network.

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

Checks whether the vehicle operator has refueled (ST110), and in the case of refueling, the desired refueling amount entered by the driver through the lubricator along with the identifier of the gas station, the actual refueling amount measured through the flow sensor unit, and the oil tank level sensor And after acquiring the water level value and the component value measured by the component measurement sensor unit (ST120), a transaction is generated using the obtained value and transmitted to the blockchain network (ST170).

If refueling does not occur in the ST110 step, measure the non-fuel time (the duration without refueling, hereinafter referred to as the'non-fuel period') (ST130), and check whether the non-fuel period exceeds the first preset time. Do (ST140). If the first predetermined time is exceeded in step ST140, the control unit of the gas station device sets the desired gas flow rate and actual fuel flow rate to a value of '0' (ST150), and the level sensor part and the component measurement sensor part of the oil tank together with the identifier. The measured water level value and the component value are acquired (ST160), a transaction is generated and transmitted (ST170). Of course, if the fueling event occurs in any of the steps ST130 and ST140, step ST120 is performed.

It is checked whether an exception occurs after step ST170. Exceptions include the case of lubricating the oil tank with fresh oil 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 operator of the gas station equipment inputs that an exception called'refueling' has occurred. The control unit of the gas station device sets the desired gas flow rate and actual fuel flow rate to a value of '0' (ST150), and the contract refueling amount supplied from the tank lorry along with the identifier (contract refueling amount through commercial transactions, not measured values), and the oil tank. The water level and component values measured by the water level sensor unit and the component measurement sensor unit are acquired (ST160), and a transaction is generated using the corresponding sensor value along with the value of'refueling', which is an exception, and transmitted (ST170).

Next, an exception to cleaning the oil tank will be described. Oil tank cleaning is carried out in the order of operation in which the oil filled in the tank lorry is removed to the outside by using a pump, cleaned, and then refilled with the extracted oil. When cleaning is complete, the gas station device operator inputs that an exception called'cleaning' has occurred. The control unit of the gas station device sets the desired gas flow rate and the actual fuel flow rate to a value of '0' (ST150), and acquires the water level and component values measured by the water level sensor part and the component measurement sensor part of the oil tank together with the identifier (ST160). ) A transaction is generated using the sensor value along with the value of'cleaning', which is an exception, and transmitted (ST170).

5 is a flowchart illustrating a 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 or not there is an exception (ST230).

If the ST230 check result is true, it is determined whether it corresponds to'refueling' among the exceptions (ST235), and if it is'refueling', it is determined whether oil has been normally supplied 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, while refueling exceptions Handle the situation (ST240). The next transaction input is processed (ST210). If Equation 1 is not satisfied within the error range in the refueling situation, it is marked as'abnormal 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 (ST240), and then Process the transaction input (ST210).

If the ST235 check result is false, if it corresponds to'cleaning', it is determined whether oil has been properly oiled according to Equation 2.

If the water level value and the component value satisfy Equation 2 within the error range, the gas station state 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 latest component value while cleaning exceptions. 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, it is displayed as'abnormal cleaning', 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 Process the transaction input (ST210).

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

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

The abnormal operation will be analyzed in more detail. If the first condition of Equation 3 is not equal to the'desired fuel flow = actual fuel flow', it is generally less than the'desired fuel flow> actual fuel flow', which will correspond to a less amount of oil than the quantity.

If the second condition of Equation 3 is not the same as'Latest water level value = Existing water level + actual running flow rate', divide it into'Latest water level value> Existing water level + actual running flow rate' and'Latest water level value <existing water level + actual running flow rate'. I can. In the case of'Latest Water Level Value> Existing Water Level Value + Actual Flow Rate', foreign substances such as water enter the oil tank and can be estimated to be diluted. The'Latest Water Level Value <Existing Water Level Value + Actual Oil Flow' can be estimated as a separate oil spill (stolen) while refueling was in progress.

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

As explained so far, the sensor values input from various sensor units are recorded on the blockchain network whenever they are changed or by periodically creating a transaction, and to the people (clients) who use gas stations, they are sent to the webpage or mobile phone app. By notifying the result when sending or searching through a query, users can view the record and select and use a reliable gas station.

In addition, it is decided to operate a blockchain network by forming a consortium between refiners and the Korea Petroleum Management Committee to correct data generated by sensor failure. Through this, it is possible to expect an inspection effect on other refiners.

In the present invention, the system used in the gas station oil verification system is as follows. First, the proposed system uses a blockchain. The reason for using a block chain is to take advantage of the fact that it is difficult to manipulate data, which is the biggest feature of the block chain. Using these characteristics, it is possible to guarantee the integrity of the data. Also, the blockchain uses a Permissioned format. For this reason, if you use a public-type block chain, anyone can propose to modify the contents recorded in the block chain, but in the system proposed now, the consortium of certain organizations decides the authority to modify data, so public is not used. Does not. Also, if you use Public, you have 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 these unnecessary operations. Thus, it is decided 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 clarifying 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 obvious that various changes and changes can be made without being able to do so. Such modified embodiments should not be individually understood from the spirit and scope of the present invention, but should be said to fall within the scope of the claims of the present invention.

200: gas station device 210: ground 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,
It includes a lubricator, an oil tank and a transaction processing unit,
The lubricator is
An input unit that receives the desired amount of liquor to be injected from the vehicle driver;
A payment processing unit that processes payment for payment according to the desired amount of alcoholic beverages, and
Flow sensor unit that measures the actual amount of liquor supplied to the vehicle
Including,
The oil tank is
A water level sensor unit that measures the level of the contents inside, and
Ingredient measurement sensor unit that measures the components of the contents inside
Including,
The transaction processing unit performs a transaction using the desired amount of alcohol input by the driver, the flow sensor unit, the water level sensor unit, and the actual alcohol level value and component values sensed by the component measurement sensor unit when refueling is terminated at the lubricator. Gas station device, characterized in that to generate.
The method of claim 1,
And a gas station identifier for identifying the gas station device from other gas station devices connected to the blockchain network, and generating a transaction using the gas station identifier when generating a transaction.
The method according to claim 1 or 2,
The transaction processing unit further includes a time measuring unit for counting a time when not refueling using the lubricator, and even when the count value exceeds a predetermined first predetermined time, a desired amount of alcohol, the gas station identifier, and a flow sensor A gas station device, characterized in that it additionally generates a transaction by using the real liquor amount, water level value, and component value sensed by the unit, the water level sensor unit, and the component measurement sensor unit.
As a gas station device operating on a blockchain network,
It includes a lubricator, an oil tank and a transaction processing unit,
Includes a gas station identifier for identifying the gas station device from other gas station devices connected to the blockchain network,
The lubricator is
An input unit that receives the desired amount of liquor to be injected from the vehicle driver;
A payment processing unit that processes payment for payment according to the desired amount of alcoholic beverages, and
Flow sensor unit that measures the actual amount of liquor supplied to the vehicle
Including,
The oil tank is
A water level sensor unit that measures the level of the contents inside, and
Ingredient measurement sensor unit that measures the components of the contents inside
Including,
The transaction processing unit performs a transaction using the desired amount of alcohol input by the driver, the flow sensor unit, the water level sensor unit, and the actual alcohol level value and component values sensed by the component measurement sensor unit when refueling is terminated at the lubricator. Even if the generated or not refueling time using the lubricator exceeds the first predetermined time, the desired amount of liquor, the actual liquor amount, water level, and components sensed by the flow sensor unit, the water level sensor unit, and the component measurement sensor unit Gas station device, characterized in that generating a transaction using the value.
The method of claim 4,
And a gas station identifier for identifying the gas station device from other gas station devices connected to the blockchain network, and wherein the transaction processing unit also uses the gas station identifier when generating a transaction.
The method according to claim 3 or 5,
The gas station apparatus, characterized in that the block chain net network is a permissioned block chain network.
The method of claim 6,
The gas station device, characterized in that the block chain net network is a permission type block chain network of PoA (Proof of Authority) method.

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