Management system, management device, and management method

Abstract

To provide a management system capable of recognizing the emission reduction effect of a greenhouse gas in fuel usage.SOLUTION: A management system comprises a computer. The computer has an emission reduction effect acquisition part to acquire emission reduction effect data representing an emission reduction effect of a greenhouse gas due to fuel, a transaction amount acquisition part to acquire a fuel transaction amount in at least a part of a fuel distribution process, an emission reduction amount calculation part to calculate an emission reduction amount of the greenhouse gas in at least a part of the distribution process based on the emission reduction effect data and the transaction amount, and an output part to output historical data representing the emission reduction amount.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present disclosure relates to a management system, a management device, and a management method. [Background technology]

[0002] From the viewpoint of preventing global warming, it is desirable to suppress greenhouse gas emissions. Patent Document 1 discloses a technology in which a fuel with reduced carbon dioxide emissions is measured and filled into a vehicle fuel tank, and the amount of carbon dioxide emissions reduction is calculated and output based on the measured filled amount. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Laid-Open No. 2008-157420 Summary of the Invention [Problem to be solved by the invention]

[0004] When a work machine is powered by an engine, fuel is used to drive the engine. The greenhouse gas emission reduction effect varies depending on the fuel's properties. Using alternative fuels as work machine fuel is more effective at reducing greenhouse gas emissions than using diesel. In order to promote the use of fuels that are more effective at reducing greenhouse gas emissions, there is a demand for technology that allows fuel users to recognize the greenhouse gas emission reduction effect.

[0005] The present disclosure aims to recognize the greenhouse gas emission reduction effects of fuel utilization. [Means for solving the problem]

[0006] According to the present disclosure, there is disclosed a management system including a computer, the computer having an emission reduction effect acquisition unit that acquires emission reduction effect data indicating the greenhouse gas emission reduction effect of fuel, a trading volume acquisition unit that acquires the trading volume of fuel in at least a part of the fuel distribution process, an emission reduction amount calculation unit that calculates the greenhouse gas emission reduction amount in at least a part of the distribution process based on the emission reduction effect data and the trading volume, and an output unit that outputs history data indicating the emission reduction amount. [Effects of the Invention]

[0007] The present disclosure recognizes the greenhouse gas emission reduction benefits of fuel utilization. [Brief explanation of the drawings]

[0008] [Figure 1] FIG. 1 is a diagram schematically illustrating a management system according to an embodiment. [Figure 2] FIG. 2 is a diagram for explaining an example of an alternative fuel according to the embodiment. [Figure 3] FIG. 3 is a hardware configuration diagram showing a computer according to the embodiment. [Figure 4] FIG. 4 is a functional block diagram showing a transaction management device and a blockchain according to an embodiment. [Figure 5] FIG. 5 is a diagram for explaining a method for acquiring emission reduction effect data according to the embodiment. [Figure 6] FIG. 6 is a diagram for explaining a method for acquiring a trading volume according to the embodiment. [Figure 7] FIG. 7 is a diagram for explaining a method for acquiring trader data according to the embodiment. [Figure 8] FIG. 8 is a diagram for explaining an example of a method for calculating the amount of CO2 emission reduction in the operation process of the work machine according to the embodiment. [Figure 9] FIG. 9 is a flowchart illustrating a method for managing alternative fuels according to an embodiment. [Figure 10]FIG. 10 is a diagram showing an example of history data displayed on the display device according to the embodiment. DETAILED DESCRIPTION OF THE INVENTION

[0009] Hereinafter, embodiments of the present disclosure will be described with reference to the drawings, but the present disclosure is not limited to the embodiments. The components of the embodiments described below can be combined as appropriate. In addition, some components may not be used.

[0010] [Overview of the management system] FIG. 1 is a diagram schematically illustrating a management system 1 according to an embodiment. The management system 1 manages the transaction history and usage history of fuel. The management system 1 includes a transaction management device 2 and a blockchain 3. The transaction management device 2 includes a computer.

[0011] The blockchain 3 has multiple nodes 4. The blockchain 3 refers to a distributed ledger system in which data is shared by multiple nodes 4 connected to a communication network 5. Each of the multiple nodes 4 includes a computer. Examples of the node 4 include a personal computer, a smartphone, and a tablet terminal. Each of the multiple nodes 4 has a distributed ledger in which data and hash values ​​of the data are registered. The blockchain 3 functions as a database that stores fuel transaction history and usage history.

[0012] In an embodiment, the blockchain 3 is a private type managed by the transaction management device 2. The transaction management device 2 and the blockchain 3 are connected via a communication network 5. The communication network 5 includes at least one of the Internet and a local area network (LAN). A smart contract is stored in the blockchain 3.

[0013] Multiple traders 6 involved in the fuel distribution process participate in the blockchain 3. Each of the multiple traders 6 owns a node 4. In an embodiment, the traders 6 involved in the fuel distribution process include a manufacturer 6A that produces fuel, a supplier 6B that supplies fuel, and a construction company 6C that constructs a work site. The construction company 6C is an example of a consuming company that consumes fuel. The manufacturer 6A owns a factory 70 for producing fuel. The supplier 6B owns a transport vehicle 30 that transports the fuel produced by the manufacturer 6A. The construction company 6C owns a work machine 40 that operates at the work site and an on-site tank 50 that temporarily stores fuel. The work machine 40 consumes fuel. The work machine 40 has an engine. Fuel is consumed to drive the engine. Examples of the work machine 40 include an excavator, a bulldozer, a wheel loader, and a dump truck.

[0014] Manufacturers 7 of work machines 40 participate in the blockchain 3. The manufacturers 7 own nodes 4. By participating in the blockchain 3, the manufacturers 7 can check the trading history and usage history of fuel. In an embodiment, users of the management system 1 are the traders 6 and the manufacturers 7.

[0015] In this embodiment, the manufacturer 7 owns the transaction management device 2. The manager of the private blockchain 3 is the manufacturer 7.

[0016] In the embodiment, the fuel is an alternative fuel 10. The alternative fuel 10 includes fuels that absorb carbon dioxide (CO2), a type of greenhouse gas, during the production process, and fuels produced from greenhouse gases. An example of a fuel produced from greenhouse gases is a carbon-neutral fuel. Carbon-neutral fuel refers to a fuel produced from carbon dioxide (CO2), a type of greenhouse gas. Although carbon dioxide (CO2) is emitted into the atmosphere during the consumption process of carbon-neutral fuel, carbon dioxide (CO2) is absorbed from the atmosphere during the production process of carbon-neutral fuel. The alternative fuel 10 is a fuel that suppresses an increase in atmospheric CO2 concentration throughout all distribution processes from the production process to the consumption process. The alternative fuel 10 has a higher greenhouse gas emission reduction effect than diesel.

[0017] The manufacturer 6A produces the alternative fuel 10 at a factory 70. The alternative fuel 10 produced by the manufacturer 6A is provided to a supplier 6B. The supplier 6B supplies the alternative fuel 10 to a construction company 6C using a transport vehicle 30. The construction company 6C consumes the alternative fuel 10 at the work site. The alternative fuel 10 is consumed to drive the engine of a work machine 40.

[0018] The greenhouse gas emission reduction effect of the alternative fuel is certified by a certification body 8. An example of a certification of the greenhouse gas emission reduction effect is the ISCC (International Sustainability and Carbon Certification). When the greenhouse gas emission reduction effect of the alternative fuel is certified, a certificate 9A is issued by the certification body 8 to the manufacturer 6A or supplier 6B.

[0019] [Alternative fuel] FIG. 2 is a diagram showing an example of types of alternative fuels according to an embodiment. Examples of alternative fuels include biofuels produced using plants that have absorbed carbon dioxide (CO2) from the atmosphere, and synthetic fuels produced by chemically synthesizing carbon dioxide (CO2). Examples of types of biofuels include FAME (Fatty Acid Methyl Ester), which is produced from plants or waste oil, and HVO (Hydrotreated Vegetable Oil), which is produced by hydrotreating waste oil or animal fat. Examples of types of synthetic fuels include e-fuels, which are produced by chemically synthesizing hydrogen (H2) produced from renewable energy and carbon dioxide (CO2), and GTL (Gas to Liquids) fuels, which are produced from natural gas.

[0020] The greenhouse gas emission reduction effect varies depending on the type of fuel. The greenhouse gas emission reduction effect differs between FAME, HVO, e-fuel, and GTL fuel. The greenhouse gas emission reduction effect also differs depending on the fuel's properties (composition). Even alternative fuels of the same type may have different properties (composition). The greenhouse gas emission reduction effect of alternative fuels varies depending on the properties. The properties of alternative fuels may differ depending on the manufacturing conditions of the alternative fuel. The manufacturing conditions of alternative fuels include differences in the raw materials used in the manufacturing process. The manufacturing conditions may change the amount of CO2 absorbed during the manufacturing process of the alternative fuel, or the properties of the manufactured alternative fuel may change. Differences in properties may change the amount of CO2 emitted during the consumption process of the alternative fuel. In other words, the greenhouse gas emission reduction effect of alternative fuels with different properties may differ from each other.

[0021] Examples of greenhouse gases include carbon dioxide, water vapor, methane, and fluorocarbons. An example of an indicator of greenhouse gas emission reduction effectiveness is the emission reduction rate, which indicates the amount of greenhouse gas emission reduction per unit volume of fuel. When greenhouse gases are converted to carbon dioxide (CO2), an example of an indicator of greenhouse gas emission reduction effectiveness is the CO2 emission reduction rate per unit volume of fuel relative to diesel oil [kg-CO2 / L]. As shown in Figure 2, the CO2 emission reduction rate per unit volume of FAME relative to diesel oil is between 50% and 60%. Depending on the properties of FAME, the CO2 emission reduction rate of FAME may vary within a range of between 50% and 60%. The CO2 emission reduction rate per unit volume of HVO relative to diesel oil is up to 90%. Depending on the properties of HVO, the CO2 emission reduction rate of HVO may vary within a range of 90% or less. The CO2 emission reduction rate of e-fuel per unit volume compared to diesel is approximately 100%. The CO2 emission reduction rate of GTL fuel compared to diesel is approximately 8.5%.

[0022] [computer] 3 is a hardware configuration diagram showing a computer 11 according to an embodiment. The management system 1 includes a computer 11. In the embodiment, each of the transaction management device 2 and the node 4 includes the computer 11.

[0023] The computer 11 includes a processor 11A such as a CPU (Central Processing Unit), a main memory 11B including a nonvolatile memory such as a ROM (Read Only Memory) and a volatile memory such as a RAM (Random Access Memory), a storage 11C, an input / output interface 11D including an input / output circuit, and a communication interface 11E including a communication circuit. The functions of the computer 11 are stored in the storage 11C as a computer program. The processor 11A reads the computer program from the storage 11C, loads it into the main memory 11B, and executes processing in accordance with the computer program. The computer program may be distributed to the computer 11 via a communication network 5.

[0024] The communication interface 11E communicates via the communication network 5. An input device 12 and a display device 13 are connected to the input / output interface 11D. The input device 12 generates input data when operated by a user of the management system 1. The user of the management system 1 can input input data to the management system 1 by operating the input device 12. Examples of the input device 12 include a touch panel, a computer keyboard, and a voice input device. The input data generated by the input device 12 is transmitted to the computer 11. The display device 13 provides display data to the user of the management system 1. The display device 13 displays the display data transmitted from the computer 11. Examples of the display device 13 include a flat panel display such as a liquid crystal display or an organic EL display.

[0025] [Transaction management device and blockchain] 4 is a functional block diagram showing a transaction management device 2 and a blockchain 3 according to an embodiment. As shown in FIG. 4, the transaction management device 2 has an emission reduction effect acquisition unit 21, a transaction volume acquisition unit 22, a trader acquisition unit 23, an emission reduction amount calculation unit 24, and an output unit 25.

[0026] The blockchain 3 functions as a database that stores history data 14 indicating the transaction history and usage history of the alternative fuel 10. The blockchain 3 stores documents 9 related to the transaction or usage of the alternative fuel 10. The documents 9 include a certificate 9A, a transfer certificate 9B, and a usage certificate 9C. The certificate 9A is issued by the certification body 8 to the manufacturer 6A or supplier 6B when the greenhouse gas emission reduction effect of the alternative fuel 10 is certified. The transfer certificate 9B is issued to the trader 6 to which the alternative fuel 10 is transferred. The usage certificate 9C is issued to the trader 6 that is authorized to use the alternative fuel 10.

[0027] The emission reduction effect acquisition unit 21 acquires emission reduction effect data indicating the greenhouse gas emission reduction effect of the fuel. The emission reduction effect data includes the greenhouse gas emission reduction rate of the alternative fuel 10 relative to diesel. The greenhouse gas emission reduction rate of the alternative fuel 10 refers to the greenhouse gas emission reduction amount of the alternative fuel 10 per unit volume. When greenhouse gas is converted to carbon dioxide (CO2), the greenhouse gas emission reduction rate of the alternative fuel 10 is the CO2 emission reduction rate of the alternative fuel 10 per unit volume relative to diesel [kg-CO2 / L]. The emission reduction effect data may also include property data indicating the properties (composition) of the alternative fuel 10.

[0028] The emission reduction effect acquisition unit 21 acquires emission reduction effect data of the alternative fuels 10 traded by the trading company 6. There are cases where multiple alternative fuels 10 with different properties are traded by the trading company 6. The CO2 emission reduction rates of the alternative fuels 10 with different properties may differ from each other. When multiple alternative fuels 10 with different properties are traded by the trading company 6, the emission reduction effect acquisition unit 21 acquires the CO2 emission reduction rates of each of the multiple alternative fuels 10.

[0029] FIG. 5 is a diagram for explaining a method of acquiring emission reduction effect data according to an embodiment. A work machine 40 operating at a work site is provided with an on-board tank 41. The alternative fuel 10 is stored in the on-board tank 41. The alternative fuel 10 is supplied from the on-board tank 41 to the engine of the work machine 40. The engine of the work machine 40 is powered by the alternative fuel 10 supplied from the on-board tank 41. A property sensor 42 is disposed in the on-board tank 41. The property sensor 42 detects the properties of the alternative fuel 10 stored in the on-board tank 41. The detection data of the property sensor 42 is transmitted to an on-board controller 43 of the work machine 40. The on-board controller 43 stores correlation data indicating the relationship between the properties of the alternative fuel 10 and the CO2 emission reduction rate of the alternative fuel 10. The correlation data is derived in advance, for example, by preliminary experiments or simulations, and stored in the on-board controller 43. The on-vehicle controller 43 calculates the CO2 emission reduction rate of the alternative fuel 10 stored in the on-vehicle tank 41 based on the detection data and correlation data of the property sensor 42. The on-vehicle controller 43 transmits the CO2 emission reduction rate of the alternative fuel 10 stored in the on-vehicle tank 41 to the emission reduction effect acquisition unit 21 via the communication network 5. The emission reduction effect acquisition unit 21 can acquire the CO2 emission reduction rate of the alternative fuel 10 from the on-vehicle controller 43 as emission reduction effect data.

[0030] The on-vehicle controller 43 may transmit detection data from the property sensor 42 to the emission reduction effect acquisition unit 21 via the communication network 5. The emission reduction effect acquisition unit 21 may store correlation data indicating the relationship between the properties of the alternative fuel 10 and the CO2 emission reduction rate of the alternative fuel 10. The emission reduction effect acquisition unit 21 may calculate the CO2 emission reduction rate of the alternative fuel 10 stored in the on-vehicle tank 41 as emission reduction effect data based on the detection data from the property sensor 42 and the correlation data.

[0031] Note that, when the on-site tank 50 is installed at a work site, a property sensor 52 may be disposed in the on-site tank 50. The alternative fuel 10 is temporarily stored in the on-site tank 50. The alternative fuel 10 is supplied from the on-site tank 50 to the on-board tank 41 of the work machine 40. The property sensor 52 detects the properties of the alternative fuel 10 stored in the on-site tank 50. The on-site tank 50 has a communication controller 53. Detection data from the property sensor 52 is transmitted to the communication controller 53 of the on-site tank 50. The communication controller 53 stores the above-mentioned correlation data. The communication controller 53 calculates the CO2 emission reduction rate of the alternative fuel 10 stored in the on-site tank 50 based on the detection data from the property sensor 52 and the correlation data. The communication controller 53 transmits the CO2 emission reduction rate of the alternative fuel 10 stored in the on-site tank 50 to the emission reduction effect acquisition unit 21 via the communication network 5. The emission reduction effect acquisition unit 21 can acquire the CO2 emission reduction rate of the alternative fuel 10 from the communication controller 53 as emission reduction effect data.

[0032] The communication controller 53 may transmit the detection data of the property sensor 52 to the emission reduction effect acquisition unit 21 via the communication network 5. The emission reduction effect acquisition unit 21 may calculate the CO2 emission reduction rate of the alternative fuel 10 stored in the on-site tank 50 as emission reduction effect data based on the detection data of the property sensor 52 and the above-mentioned correlation data.

[0033] In addition, if the CO2 emission reduction rate of the alternative fuel 10 is pre-stored in the communication controller 53 of the on-site tank 50, the CO2 emission reduction rate of the alternative fuel 10 stored in the communication controller 53 may be transmitted to the emission reduction effect acquisition unit 21 as emission reduction effect data.

[0034] The property sensor 32 may be disposed in the transport tank 31 of the transport vehicle 30 that transports the alternative fuel 10. The alternative fuel 10 is stored in the transport tank 31. The alternative fuel 10 is supplied from the transport tank 31 to the on-board tank 41 or the on-site tank 50. The property sensor 32 detects the properties of the alternative fuel 10 stored in the transport tank 31. The detection data of the property sensor 32 is transmitted to the on-board controller 33 of the transport vehicle 30. The on-board controller 33 stores the above-mentioned correlation data. The on-board controller 33 calculates the CO2 emission reduction rate of the alternative fuel 10 stored in the transport tank 31 based on the detection data of the property sensor 32 and the correlation data. The on-board controller 33 transmits the CO2 emission reduction rate of the alternative fuel 10 stored in the transport tank 31 to the emission reduction effect acquisition unit 21 via the communication network 5. The emission reduction effect acquisition unit 21 can acquire the CO2 emission reduction rate of the alternative fuel 10 from the on-board controller 33 as emission reduction effect data.

[0035] The on-board controller 33 may transmit the detection data of the property sensor 32 to the emission reduction effect acquisition unit 21 via the communication network 5. The emission reduction effect acquisition unit 21 may calculate the CO2 emission reduction rate of the alternative fuel 10 stored in the transportation tank 31 as emission reduction effect data based on the detection data of the property sensor 32 and the correlation data described above.

[0036] In addition, if the CO2 emission reduction rate of the alternative fuel 10 is pre-stored in the on-board controller 33 of the transport vehicle 30, the CO2 emission reduction rate of the alternative fuel 10 stored in the on-board controller 33 may be transmitted to the emission reduction effect acquisition unit 21 as emission reduction effect data.

[0037] The emission reduction effect acquisition unit 21 may acquire, as the emission reduction effect data, certification data from a certification organization 8 that certifies the alternative fuel 10. The certification data includes items stated in a certificate 9A issued by the certification organization 8. If the certificate 9A states the CO2 emission reduction rate of the alternative fuel 10, the manufacturer 6A or the supplier 6B can operate an input device 12 connected to the node 4 to input the CO2 emission reduction rate of the alternative fuel 10 stated in the certificate 9A to the node 4 as the emission reduction effect data. The node 4 transmits the input data from the input device 12 to the emission reduction effect acquisition unit 21 as the emission reduction effect data. The emission reduction effect acquisition unit 21 may acquire, as the emission reduction effect data, input data indicating the CO2 emission reduction rate of the alternative fuel 10 entered from the input device 12.

[0038] The emission reduction effect acquisition unit 21 may acquire the emission reduction effect data from the information terminal 60. Application software for using the management system 1 is installed in the information terminal 60. A user of the management system 1 may operate the application software installed in the information terminal 60 to transmit the emission reduction effect data to the emission reduction effect acquisition unit 21. The emission reduction effect acquisition unit 21 may acquire input data from the information terminal 60 as the emission reduction effect data.

[0039] The transaction volume acquisition unit 22 acquires the transaction volume [L] of the alternative fuel 10 in at least a part of the distribution process of the alternative fuel 10. The transaction volume of the alternative fuel 10 includes the production volume [L] of the alternative fuel 10 by the manufacturer 6A, the supply volume [L] of the alternative fuel 10 by the supplier 6B, and the consumption volume [L] of the alternative fuel 10 by the construction company 6C. The consumption volume [L] of the alternative fuel 10 by the construction company 6C includes the consumption volume [L] of the alternative fuel 10 by the work machines 40 operating at the work site.

[0040] FIG. 6 is a diagram for explaining a method for acquiring a trading volume according to an embodiment. A liquid level sensor 44 is disposed in the on-board tank 41 of the work machine 40. The liquid level sensor 44 can detect an increase [L] in the amount of alternative fuel 10 contained in the on-board tank 41. The liquid level sensor 44 can detect a decrease [L] in the amount of alternative fuel 10 contained in the on-board tank 41. The consumption [L] of the alternative fuel 10 by the work machine 40 is considered to be the increase or decrease in the amount of alternative fuel 10 detected by the liquid level sensor 44. The detection data of the liquid level sensor 44 is transmitted to the on-board controller 43 of the work machine 40. The on-board controller 43 transmits the detection data of the liquid level sensor 44 to the trading volume acquisition unit 22 via the communication network 5. The trading volume acquisition unit 22 acquires the detection data of the liquid level sensor 44 from the on-board controller 43 as the consumption amount of the alternative fuel 10 by the work machine 40.

[0041] The on-vehicle controller 43 may calculate the consumption amount of the alternative fuel 10 by the work machine 40 based on the detection data of the liquid level sensor 44. The on-vehicle controller 43 may transmit the consumption amount of the alternative fuel 10 by the work machine 40 to the transaction amount acquisition unit 22 via the communication network 5.

[0042] In addition, when the on-site tank 50 is installed at a work site, a supply amount sensor 54 may be disposed in the on-site tank 50. The supply amount sensor 54 can detect an increase [L] in the amount of alternative fuel 10 stored in the on-site tank 50. The supply amount sensor 54 can detect a decrease [L] in the amount of alternative fuel 10 stored in the on-site tank 50. The consumption amount [L] of the alternative fuel 10 by the construction company 6C is considered to be the increase or decrease in the amount of alternative fuel 10 detected by the supply amount sensor 54. The detection data of the supply amount sensor 54 is transmitted to the communication controller 53 of the on-site tank 50. The communication controller 53 transmits the detection data of the supply amount sensor 54 to the transaction amount acquisition unit 22 via the communication network 5. The transaction amount acquisition unit 22 acquires the detection data of the supply amount sensor 54 from the communication controller 53 as the consumption amount of the alternative fuel 10 by the construction company 6C.

[0043] A supply amount sensor 34 may be disposed in the transport tank 31 of the transport vehicle 30 that transports the alternative fuel 10. The supply amount sensor 34 can detect an increase [L] in the amount of alternative fuel 10 stored in the transport tank 31. The supply amount sensor 34 can detect a decrease [L] in the amount of alternative fuel 10 stored in the transport tank 31. The supply amount [L] of the alternative fuel 10 by the supplier 6B is considered to be the increase or decrease in the amount of alternative fuel 10 detected by the supply amount sensor 34. The detection data of the supply amount sensor 34 is transmitted to the on-board controller 33 of the transport vehicle 30. The on-board controller 33 transmits the detection data of the supply amount sensor 34 to the transaction amount acquisition unit 22 via the communication network 5. The transaction amount acquisition unit 22 acquires the detection data of the supply amount sensor 34 from the on-board controller 33 as the amount of alternative fuel 10 supplied by the supplier 6B.

[0044] The manufacturer 6A can operate the input device 12 connected to the node 4 to input the production volume [L] of the alternative fuel 10 by the manufacturer 6A to the node 4. The node 4 transmits the input data from the input device 12 to the trading volume acquisition unit 22 as the production volume of the alternative fuel 10 by the manufacturer 6A. The trading volume acquisition unit 22 can acquire the input data indicating the production volume of the alternative fuel 10 input from the input device 12.

[0045] Supplier 6B can operate input device 12 connected to node 4 to input the amount [L] of alternative fuel 10 supplied by supplier 6B to node 4. Node 4 transmits the input data from input device 12 to transaction volume acquisition unit 22 as the amount of alternative fuel 10 supplied by supplier 6B. Transaction volume acquisition unit 22 can acquire the input data indicating the amount of alternative fuel 10 supplied input from input device 12.

[0046] The construction business operator 6C can operate the input device 12 connected to node 4 to input the amount [L] of consumption of the alternative fuel 10 by the construction business operator 6C to node 4. Node 4 transmits the input data from the input device 12 to the transaction volume acquisition unit 22 as the amount of consumption of the alternative fuel 10 by the construction business operator 6C. The transaction volume acquisition unit 22 can acquire the input data indicating the amount of consumption of the alternative fuel 10 input from the input device 12.

[0047] The emission reduction effect acquisition unit 21 may acquire the trading volume [L] of the alternative fuel 10 from the information terminal 60. Application software for using the management system 1 is installed in the information terminal 60. The user of the management system 1 may operate the application software installed in the information terminal 60 to transmit the trading volume of the alternative fuel 10 to the trading volume acquisition unit 22.

[0048] The trader acquisition unit 23 acquires trader data indicating traders 6 that trade the alternative fuel 10 during the distribution process of the alternative fuel 10. The trader data includes manufacturer data indicating the manufacturer 6A, supplier data indicating the supplier 6B, and construction company data indicating the construction company 6C. In the embodiment, the trader data includes work machine data indicating the work machine 40.

[0049] 7 is a diagram for explaining a method for acquiring trader data according to the embodiment. Identification data of the work machine 40 is stored in advance in the on-board controller 43 of the work machine 40 as work machine data indicating the work machine 40. The on-board controller 43 transmits the identification data of the work machine 40 as work machine data to the trader acquisition unit 23 via the communication network 5. The trader acquisition unit 23 acquires the identification data of the work machine 40 as trader data.

[0050] The identification data of the work machine 40 may include, for example, a two-dimensional code or nameplate affixed to the body of the work machine 40. The two-dimensional code or nameplate may be read by a reading device. The read data read by the reading device may be transmitted from the on-board controller 43 to the trader acquisition unit 23 as the identification data of the work machine 40.

[0051] The on-board controller 33 of the transport vehicle 30 pre-stores identification data of the transport vehicle 30 as supplier data indicating the supplier 6B. The on-board controller 33 transmits the identification data of the transport vehicle 30 as supplier data to the trader acquisition unit 23 via the communication network 5. The trader acquisition unit 23 acquires the identification data of the transport vehicle 30 as trader data.

[0052] The identification data of the transport vehicle 30 may include, for example, a two-dimensional code or a nameplate affixed to the body of the transport vehicle 30. The two-dimensional code or the nameplate may be read by a reading device. The read data read by the reading device may be transmitted from the on-board controller 33 to the trader acquisition unit 23 as the identification data of the transport vehicle 30.

[0053] Manufacturer 6A can operate input device 12 connected to node 4 to input manufacturer data indicating manufacturer 6A to node 4. Node 4 transmits the input data from input device 12 as manufacturer data to trading company acquisition unit 23. Trading company acquisition unit 23 can acquire the input data indicating the manufacturer data input from input device 12.

[0054] Supplier 6B can operate input device 12 connected to node 4 to input supplier data indicating supplier 6B to node 4. Node 4 transmits the input data from input device 12 as supplier data indicating supplier 6B to trading supplier acquisition unit 23. Trading supplier acquisition unit 23 can acquire the input data indicating the supplier data input from input device 12.

[0055] The construction company 6C can operate the input device 12 connected to the node 4 to input construction company data indicating the construction company 6C to the node 4. The node 4 transmits the input data from the input device 12 to the trading company acquisition unit 23 as construction company data indicating the construction company 6C. The trading company acquisition unit 23 can acquire the input data indicating the construction company data input from the input device 12.

[0056] The manufacturer 6A or the supplier 6B may operate the input device 12 connected to the node 4 to input into the node 4 the construction company data indicating the construction company 6C.

[0057] The trader acquisition unit 23 may acquire trader data from the information terminal 60. Application software for using the management system 1 is installed on the information terminal 60. A user of the management system 1 may operate the application software installed on the information terminal 60 to transmit the trader data to the transaction management device 2.

[0058] The emission reduction calculation unit 24 calculates the amount of greenhouse gas emission reduction in at least a portion of the distribution process based on the emission reduction effect data acquired by the emission reduction effect acquisition unit 21 and the transaction volume acquired by the transaction volume acquisition unit 22. The emission reduction effect data includes the CO2 emission reduction rate [kg-CO2 / L] of the alternative fuel 10. The emission reduction calculation unit 24 can calculate the CO2 emission reduction amount [kg-CO2] in at least a portion of the distribution process as the amount of greenhouse gas emission reduction by multiplying the CO2 emission reduction rate [kg-CO2 / L] of the alternative fuel 10 by the transaction volume [L].

[0059] The emission reduction calculation unit 24 can calculate the CO2 emission reduction amount [kg-CO2] during the production process of the alternative fuel 10 based on the CO2 emission reduction rate [kg-CO2 / L] of the alternative fuel 10 and the production amount [L] of the alternative fuel 10 by the manufacturer 6A.

[0060] The emission reduction calculation unit 24 can calculate the CO2 emission reduction amount [kg-CO2] during the supply process of the alternative fuel 10 based on the CO2 emission reduction rate [kg-CO2 / L] of the alternative fuel 10 and the supply amount [L] of the alternative fuel 10 by supplier 6B.

[0061] The emission reduction calculation unit 24 can calculate the CO2 emission reduction amount [kg-CO2] during the consumption process of the alternative fuel 10 based on the CO2 emission reduction rate [kg-CO2 / L] of the alternative fuel 10 and the consumption amount [L] of the alternative fuel 10 by the construction company 6C.

[0062] The emission reduction calculation unit 24 can calculate the CO2 emission reduction amount [kg-CO2] during the operation of the work machine 40 based on the CO2 emission reduction rate [kg-CO2 / L] of the alternative fuel 10 and the consumption amount [L] of the alternative fuel 10 by the work machine 40.

[0063] FIG. 8 is a diagram for explaining an example of a method for calculating the amount of CO2 emission reduction during the operation of a work machine according to an embodiment. As shown in FIG. 8, the work machine 40 has a position sensor 45 that detects the position of the work machine 40. The position sensor 45 includes a Global Navigation Satellite System (GNSS) receiver that uses the GNSS to detect the position of the work machine 40 in a global coordinate system. The detection data of the position sensor 45 is transmitted to the on-board controller 43. The on-board controller 43 transmits the detection data of the position sensor 45 to the emission reduction calculation unit 24 via the communication network 5. The emission reduction calculation unit 24 acquires the detection data of the position sensor 45 from the on-board controller 43. The work site where the work machine 40 operates is linked to a certificate 9A for the alternative fuel 10. When the emission reduction calculation unit 24 determines, based on the detection data of the position sensor 45, that the work site linked to the certificate 9A matches the work site where the work machine 40 operates, it can determine that the work machine 40 is consuming the alternative fuel 10 certified by the certificate 9A. The information described in the certificate 9A includes the CO2 emission reduction rate [kg-CO2 / L] of the alternative fuel 10. When the emission reduction calculation unit 24 determines, based on the detection data of the position sensor 45, that the work site linked to the certificate 9A matches the work site where the work machine 40 operates, it can determine that the work machine 40 is consuming the alternative fuel 10 certified by the certificate 9A. The emission reduction calculation unit 24 can calculate the CO2 emission reduction rate [kg-CO2] in the operation process of the work machine 40 based on the CO2 emission reduction rate [kg-CO2 / L] of the alternative fuel 10 certified by the certificate 9A and the amount [L] of alternative fuel 10 consumed by the work machine 40 detected by the liquid level sensor 44.

[0064] The output unit 25 outputs history data 14 showing the transaction history and usage history of the alternative fuel 10. The history data 14 includes the CO2 emission reduction amount calculated by the emission reduction amount calculation unit 24 for at least a portion of the distribution process of the alternative fuel 10. When multiple alternative fuels 10 with different properties are in circulation, the output unit 25 outputs history data 14 for each of the multiple alternative fuels 10 with different properties. When multiple alternative fuels 10 with different properties are in circulation, the output unit 25 outputs property reduction amount data showing the relationship between the properties of the alternative fuel 10 and the CO2 emission reduction amount as the history data 14. The output unit 25 outputs trader reduction amount data showing the relationship between the trader 6 and the CO2 emission reduction amount as the history data 14. The output unit 25 may also output the CO2 emission reduction rate [kg-CO2 / L] of the alternative fuel 10 as the history data 14.

[0065] As shown in FIG. 4, the output unit 25 outputs the history data 14 to the blockchain 3. The history data 14 is shared by multiple nodes 4 of the blockchain 3. Updates to the history data 14 are automatically performed by smart contracts of the blockchain 3. The output unit 25 can output the history data 14 to nodes 4 owned by the traders 6 and the manufacturers 7 of the work machines 40. The history data 14 is displayed on a display device 13 connected to the nodes 4. The traders 6 (6A, 6B, 6C) and the manufacturers 7 of the work machines 40, who are participants in the blockchain 3, can check the history data 14 displayed on the display device 13.

[0066] As described above, the trader data includes identification data for the work machine 40 operating at the work site. Based on the identification data for the work machine 40, the output unit 25 outputs history data 14 indicating the amount of CO2 emission reduction by the work machine 40 to the node 4 owned by the manufacturer 7 of the work machine 40. The manufacturer 7 can recognize the amount of CO2 emission reduction by the work machine 40.

[0067] [Management method] 9 is a flowchart showing an alternative fuel management method according to the embodiment. The emission reduction effect acquisition unit 21 acquires emission reduction effect data of the alternative fuel 10 traded by the trading company 6. The emission reduction effect acquisition unit 21 acquires the CO2 emission reduction rate of the alternative fuel 10 relative to diesel as the emission reduction effect data of the alternative fuel 10 (step S1).

[0068] The trading volume acquisition unit 22 acquires the trading volume of the alternative fuel 10 in at least a part of the distribution process of the alternative fuel 10. The trading volume acquisition unit 22 acquires the trading volume of the alternative fuel 10 traded at the trader 6 (step S2).

[0069] The trader acquisition unit 23 acquires trader data indicating traders 6 that trade the alternative fuel 10 in the distribution process of the alternative fuel 10. The trader data includes identification data of the trader 6. The trader data includes identification data of the work machine 40 that uses the alternative fuel 10 (step S3).

[0070] The emission reduction calculation unit 24 calculates the CO2 emission reduction amount for at least a portion of the distribution process of the alternative fuel 10 based on the CO2 emission reduction rate of the alternative fuel 10 acquired in step S1 and the trading volume of the alternative fuel 10 acquired in step S2. The emission reduction calculation unit 24 calculates the CO2 emission reduction amount of the alternative fuel 10 compared to diesel. The emission reduction calculation unit 24 calculates each of the CO2 emission reduction amount in the production process of the alternative fuel 10, the CO2 emission reduction amount in the supply process of the alternative fuel 10, and the CO2 emission reduction amount in the consumption process of the alternative fuel 10. Each of the CO2 emission reduction amounts in the consumption process of the alternative fuel 10 is calculated. The CO2 emission reduction amount in the consumption process of the alternative fuel 10 includes the CO2 emission reduction amount in the operation process of the work machine 40 that is powered by using the alternative fuel 10 (step S4).

[0071] The output unit 25 generates history data 14 indicating the CO2 emission reduction amount calculated in step S4. The output unit 25 generates trader reduction amount data indicating the relationship between the trader 6 and the CO2 emission reduction amount as the history data 14 (step S5).

[0072] The output unit 25 outputs the history data 14 generated in step S5 to the blockchain 3. The history data 14 is displayed on the display device 13 connected to the node 4 of the blockchain 3 (step S6).

[0073] Fig. 10 is a diagram showing an example of history data 14 displayed on the display device 13 according to the embodiment. As shown in Fig. 10, the display device 13 displays a symbol indicating the trader 6 and a symbol indicating the manufacturer 7 of the work machine 40. The symbols indicating the trader 6 include a symbol indicating the manufacturer 6A of the alternative fuel 10, a symbol indicating the supplier 6B of the alternative fuel 10, and a symbol indicating the construction company 6C that consumes the alternative fuel 10. When the trader 6 holds a document 9, a symbol indicating the document 9 is displayed near the symbol of the trader 6 that holds the document 9. The document 9 includes at least one of a certificate 9A, a transfer certificate 9B, and a usage certificate 9C.

[0074] As described above, the historical data 14 includes trader reduction data indicating the relationship between traders 6 and CO2 emission reductions. The trader reduction data is expressed as tokens. The tokens represent CO2 trading volumes. The tokens represent the trader 6's contribution to CO2 emission reductions. Carbon dioxide (CO2) is absorbed from the atmosphere during the production process of alternative fuel 10. Therefore, CN tokens, which represent the amount of CO2 absorbed from the atmosphere, are provided to manufacturer 6A of alternative fuel 10 as tokens representing the CO2 trading volume. When supplier 6B of alternative fuel 10 distributes alternative fuel 10 to multiple traders 6, the CN tokens are divided according to the number of traders 6 to which the alternative fuel 10 is supplied. The CN tokens are used to calculate the GHG Protocol Scope 1 emissions for manufacturer 6A or supplier 6B.

[0075] During the consumption process of the alternative fuel 10, carbon dioxide (CO2) is emitted into the atmosphere. Therefore, the construction company 6C is given consumed tokens that indicate the amount of CO2 emitted into the atmosphere as tokens that represent the amount of CO2 traded. The CO2 emissions into the atmosphere by the construction company 6C include the CO2 emissions into the atmosphere by the work machine 40. The work machine 40 is given consumed tokens that indicate the amount of CO2 emitted into the atmosphere as tokens that represent the amount of CO2 traded. The consumed tokens are used to calculate the Scope 1 emissions of the GHG Protocol for the construction company 6C.

[0076] The consumed tokens assigned to the work machine 40, i.e., the amount of CO2 emissions into the atmosphere by the work machine 40, are shared with the manufacturer 7 of the work machine 40 together with the identification data of the work machine 40. The manufacturer 7 can recognize the amount of CO2 emissions reduced (CO2 emissions) by the work machine 40. The consumed tokens are used to calculate the Scope 3 emissions of the GHG Protocol for the manufacturer 7 of the work machine 40.

[0077] [effect] As described above, the management system 1 includes a computer 11. The computer 11 includes an emission reduction effect acquisition unit 21 that acquires emission reduction effect data indicating the greenhouse gas emission reduction effect of the alternative fuel 10, a trading volume acquisition unit 22 that acquires the trading volume of the alternative fuel 10 in at least a part of the distribution process of the alternative fuel 10, an emission reduction amount calculation unit 24 that calculates the amount of greenhouse gas emission reduction in at least a part of the distribution process based on the emission reduction effect data and the trading volume, and an output unit 25 that outputs history data 14 indicating the emission reduction amount.

[0078] According to the embodiment, traders 6 involved in the distribution process of alternative fuel 10 can recognize the greenhouse gas emission reduction effect in the distribution process of alternative fuel 10 by checking historical data 14. Since traders 6 can recognize the greenhouse gas emission reduction effect of alternative fuel 10, the use of alternative fuel 10 is promoted. Traders 6 can use historical data 14 to calculate Scope 1 emissions of the GHG Protocol.

[0079] History data 14 relating to the amount of CO2 emission reduction (CO2 emission amount) of the work machine 40 is output to the manufacturer 7 of the work machine 40. This allows the manufacturer 7 to recognize the degree of contribution of the work machine 40 to CO2 emission reduction. The manufacturer 7 of the work machine 40 can use the history data 14 to calculate the Scope 3 emissions of the GHG Protocol.

[0080] Construction company 6C, a contractor that uses alternative fuel 10, can recognize the greenhouse gas emission reduction effect of using alternative fuel 10 through tokens that indicate the degree of contribution to CO2 emission reduction. The tokens motivate construction company 6C to actively use alternative fuel 10. When construction company 6C actively uses alternative fuel 10, Scope 3 emissions of the GHG Protocol at manufacturer 7 of work machine 40 are reduced.

[0081] The computer 11 has a trader acquisition unit 23 that acquires trader data indicating traders 6 that trade the alternative fuel 10 during the distribution process of the alternative fuel 10. The history data 14 includes trader reduction data that indicates the relationship between the traders 6 and the amount of emission reduction. This allows the traders 6 or the manufacturer 7 to recognize the degree of contribution of each of the multiple traders 6 to CO2 emission reduction.

[0082] [Other embodiments] In the above-described embodiment, the emission reduction effect data includes the greenhouse gas emission reduction rate of the alternative fuel 10 relative to diesel oil. The greenhouse gas emission reduction rate of the alternative fuel 10 is the CO2 emission reduction rate of the alternative fuel 10 per unit volume [kg-CO2 / L] relative to diesel oil. The greenhouse gas emission reduction rate of the alternative fuel 10 may also be the CO2 emission reduction rate of the alternative fuel 10 per unit weight [kg-CO2 / kg].

[0083] In the above-described embodiment, the transaction management device 2 may be regarded as one of the nodes 4 of the blockchain 3. The transaction management device 2 and the node 4 may be treated on the same level.

[0084] In the above-described embodiment, at least a part of the functions of the transaction management device 2 may be provided in the node 4. The functions of the transaction management device 2 may be distributed among a plurality of nodes 4.

[0085] In the above-described embodiment, the blockchain 3 is a private type managed by a single administrator. The blockchain 3 may be a consortium type managed by multiple administrators. The blockchain 3 may also be a public type in which participants in the blockchain 3 are treated equally.

[0086] In the above-described embodiment, the management system 1 may not have the blockchain 3. The transaction management device 2 may function as a server, and the terminal devices owned by the traders 6 and the manufacturers 7 may function as clients.

[0087] In the above-described embodiment, FAME, HVO, e-fuel, and GTL fuel are exemplified as alternative fuels. The alternative fuel may be any fuel that is more effective in reducing greenhouse gas emissions than diesel. Examples of alternative fuels include hydrogen, liquefied petroleum gas (LPG), methanol, ethanol, and ammonia. The fuel may also include diesel. [Explanation of symbols]

[0088] 1...management system, 2...transaction management device, 3...blockchain, 4...node, 5...communication network, 6...trader, 6A...manufacturer, 6B...supplier, 6C...construction company, 7...manufacturer, 8...certification authority, 9...document, 9A...certificate, 9B...transfer deed, 9C...usage certificate, 10...alternative fuel, 11...computer, 11A...processor, 11B...main memory, 11C...storage, 11D...input / output interface, 11E...communication interface, 12...input device, 13...display device, 14... Historical data, 21...emission reduction effect acquisition unit, 22...transaction volume acquisition unit, 23...trader acquisition unit, 24...emission reduction amount calculation unit, 25...output unit, 30...transport vehicle, 31...transport tank, 32...property sensor, 33...on-board controller, 34...supply amount sensor, 40...work machine, 41...on-board tank, 42...property sensor, 43...on-board controller, 44...liquid level sensor, 45...position sensor, 50...on-site tank, 52...property sensor, 53...communication controller, 54...supply amount sensor, 60...information terminal, 70...factory.

Claims

1. A computer is provided. The computer an emission reduction effect acquisition unit that acquires emission reduction effect data that indicates the greenhouse gas emission reduction effect of the fuel; a trading volume acquisition unit that acquires a trading volume of the fuel in at least a part of a distribution process of the fuel; an emission reduction amount calculation unit that calculates an emission reduction amount of the greenhouse gas in at least a part of the distribution process based on the emission reduction effect data and the transaction volume; an output unit that outputs history data indicating the emission reduction amount, Management system.

2. The emission reduction effect data includes an emission reduction rate indicating the greenhouse gas emission reduction amount of the fuel per unit volume relative to diesel fuel, The management system according to claim 1 .

3. the emission reduction effect acquisition unit calculates the emission reduction rate based on detection data from a property sensor that detects the property of the fuel; The management system according to claim 2 .

4. The property sensor is disposed in at least one of an on-board tank that is provided in a work machine that operates at a work site and stores the fuel, an on-site tank that is installed at the work site and stores the fuel, and a transport tank that is provided in a transport vehicle that transports the fuel and stores the fuel. The management system according to claim 3 .

5. the emission reduction effect acquisition unit acquires, as the emission reduction effect data, certification data from a certification body that certifies the fuel; The management system according to claim 1 .

6. the emission reduction effect acquisition unit acquires input data from an input device as the emission reduction effect data; The management system according to claim 1 .

7. The trading amount includes at least one of a production amount of the fuel, a supply amount of the fuel, and a consumption amount of the fuel. The management system according to claim 1 .

8. The transaction amount includes the amount of fuel consumed by a work machine operating at a work site. The management system according to claim 1 .

9. the output unit outputs the history data to a manufacturer of a work machine operating at a work site. The management system according to claim 1 .

10. The computer a trader acquisition unit that acquires trader data indicating traders that trade the fuel in the distribution process; the historical data includes trader reduction data indicating a relationship between the trader and the emission reduction; The management system according to claim 1 .

11. The traders include at least one of a manufacturer that produces the fuel, a supplier that supplies the fuel, and a consumer that consumes the fuel; The management system according to claim 10.

12. the trader data includes identification data for work machines operating at the work site; the output unit outputs history data indicating the emission reduction amount by the work machine to a manufacturer of the work machine based on the identification data. The management system according to claim 11.

13. A computer is provided. The computer obtaining emission reduction effect data showing the greenhouse gas emission reduction effect of the fuel; Obtaining a trading volume of the fuel in at least a part of a distribution process of the fuel; calculating the greenhouse gas emission reduction amount in at least a part of the distribution process based on the emission reduction effect data and the transaction volume; outputting historical data indicative of the emission reductions. Management device.

14. The computer obtaining emission reduction effect data showing the greenhouse gas emission reduction effect of the fuel; Obtaining a trading volume of the fuel in at least a part of a distribution process of the fuel; calculating the greenhouse gas emission reduction amount in at least a part of the distribution process based on the emission reduction effect data and the transaction volume; outputting historical data indicative of the emission reductions. Management method.

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