Discharge amount calculation device

Abstract

To provide a technology for calculating a greenhouse gas emission amount of each work which can appropriately evaluate the validity of an emission amount.SOLUTION: An emission amount calculation device includes a communication unit for receiving traceability information and energy consumption amount information, and an emission amount calculation unit, and calculates an emission amount of greenhouse gas. The emission amount calculation unit executes: number acquisition processing using the traceability information to acquire the number of works flowing on a manufacturing line in each of a plurality of unit periods obtained by dividing a distribution period with one of a plurality of works as an object work; use consumption amount acquisition processing using the energy consumption amount information to acquire a unit energy consumption amount of each of the plurality of unit periods; total calculation processing for calculating a total energy consumption amount in the distribution period of the object work by totaling work energy consumption amounts for each of plurality of unit periods calculated by dividing the unit energy consumption amount by the number of works for each of the plurality of unit periods; and conversion processing for calculating an emission amount by converting the total energy consumption amount.SELECTED DRAWING: Figure 4

Description

Technical Field

[0001] The present disclosure relates to an emission amount calculation device.

Background Art

[0002] In order to reduce greenhouse gas emissions, it is important to grasp the current greenhouse gas emissions. Conventionally, there is a technique for calculating the emissions per product using the emissions of an emission source that handles a plurality of products such as means of transportation (Patent Document 1). In the technique of Patent Document 1, when obtaining the emissions per individual item using the emissions of an emission source such as a means of transportation that transports a plurality of individual items, the emissions per individual item are obtained by apportioning using a weighting factor that reflects the weight of the individual item.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] However, in the technique of Patent Document 1, the weight of the article is reflected in the greenhouse gas emissions per article. For this reason, there is a possibility that the validity of the greenhouse gas emissions cannot be appropriately evaluated.

Means for Solving the Problems

[0005] The present disclosure can be realized in the following forms. According to one aspect of the present disclosure, there is provided an emission calculation device for calculating the emission amount of greenhouse gases. This emission calculation device, for a plurality of workpieces flowing through a production line having a first position and a second position downstream of the first position, (i) for each of the plurality of workpieces, traceability information including information on the passing time at the first position and the passing time at the second position, and (ii) energy consumption information of the energy used along with the operation of the production line, a communication unit for receiving, and an emission calculation unit. The emission calculation unit uses the traceability information, with one of the plurality of workpieces as a target workpiece, for each of a plurality of unit periods obtained by dividing the circulation period from the time the target workpiece passes the first position to the time it passes the second position, a number acquisition process for acquiring the number of workpieces flowing through the production line, a usage amount acquisition process for acquiring the unit energy consumption amount, which is the energy consumption amount for each of the plurality of unit periods, using the energy consumption information, and for each of the plurality of unit periods, by summing the workpiece energy consumption amounts for each of the plurality of unit periods calculated by dividing the unit energy consumption amount by the number of workpieces, a total calculation process for calculating the total energy consumption amount of the target workpiece during the circulation period, and a conversion process for calculating the emission amount by converting the total energy consumption amount. There are a plurality of the production lines, and the plurality of workpieces flow through each of the plurality of production lines in order. The emission calculation unit calculates the emission amount of the target workpiece for each of the plurality of production lines, and further executes a total emission amount calculation process for calculating the total emission amount by summing the emission amounts for each of the plurality of production lines. The energy consumption information is the power consumption of the power used by a production device arranged in any one of the plurality of production lines, and includes the power consumption per unit time of the usage amount, which is longer than the time of the circulation period. The emission calculation unit calculates and acquires the power consumption for each of the plurality of unit periods using the power consumption per unit time in the usage amount acquisition process.

[0006] (1) According to one aspect of the present disclosure, there is provided an emission amount calculation device for calculating the emission amount of greenhouse gases. This emission amount calculation device, for a plurality of workpieces flowing through a production line having a first position and a second position downstream of the first position, (i) traceability information including information on the passing time at the first position and the passing time at the second position for each of the plurality of workpieces, and (ii) energy consumption information on the energy used with the operation of the production line, a communication unit that receives the information, and an emission amount calculation unit. The emission amount calculation unit uses the traceability information, with one of the plurality of workpieces as a target workpiece, to obtain the number of workpieces flowing through the production line for each of a plurality of unit periods obtained by dividing the circulation period from when the target workpiece passes the first position to when it passes the second position, a number acquisition process; uses the energy consumption information to obtain the unit energy consumption, which is the energy consumption for each of the plurality of unit periods, a consumption amount acquisition process; for each of the plurality of unit periods, calculates the total energy consumption of the target workpiece during the circulation period by summing the workpiece energy consumption for each of the plurality of unit periods calculated by dividing the unit energy consumption by the number of workpieces, a total calculation process; and calculates the emission amount by converting the total energy consumption, a conversion process. According to this aspect, the emission amount of greenhouse gases can be accurately calculated for each workpiece, so the validity of the emission amount can be appropriately evaluated for each workpiece. (2) For the emission amount calculation device of the above aspect, there are a plurality of the production lines, the plurality of workpieces flow through each of the plurality of production lines in order, and the emission amount calculation unit may calculate the emission amount of the target workpiece for each of the plurality of production lines, and further execute a total emission amount calculation process of calculating the total emission amount by summing the emission amounts for each of the plurality of production lines. According to this aspect, the emission amount discharged in all of the plurality of production lines can be calculated. (3) The emission amount calculation device of the above-described form, wherein the energy usage information may include at least any one of the power usage of the power used by a manufacturing device disposed on any one of the plurality of manufacturing lines, the fuel gas usage of the fuel gas used by the manufacturing device, and the air usage of the air sent into the manufacturing device. According to this form, the emission amount can be calculated using any one of the power usage, the fuel gas usage, and the air usage. (4) The emission amount calculation device of the above-described form, wherein the energy usage information includes the power usage per unit time of usage longer than the time of the circulation period, and the emission amount calculation unit may calculate and acquire the power usage for each of the plurality of unit periods using the power usage per unit time of usage in the usage acquisition process. According to this form, the amount of information of the energy usage information can be reduced as compared with the case of using the power usage for each unit period. (5) The emission amount calculation device of the above-described form, wherein identification information is given to each of the plurality of workpieces, and the emission amount calculation unit may execute a creation process of creating emission amount information in which the identification information and the emission amount are associated with each other by calculating the emission amount for each of the plurality of workpieces. According to this form, since the emission amount information has the identification information and the emission amount associated with each other, the emission amounts can be arranged in time series using the identification information and the traceability information, and the increase and decrease of the emission amount can be efficiently verified on a daily basis or a seasonal basis. The present disclosure can also be realized in various forms other than the emission amount calculation device. For example, it can be realized in the form of an emission amount calculation system including a storage device that stores traceability information and energy usage information and an emission amount calculation device, a control method of the emission amount calculation device, a computer program that realizes the control method, and a non-transitory recording medium on which the computer program is recorded.

Brief Description of the Drawings

[0007]

Figure 1

Figure 2

Figure 3

Figure 4

Figure 5

Figure 6

Figure 7

Figure 8

Embodiments for Carrying Out the Invention

[0008] A. First Embodiment: FIG. 1 is a schematic diagram showing the configuration of an emission amount calculation device 10, a data server 100, and a production line L1. The emission amount calculation device 10 calculates the emission amount of greenhouse gases for each workpiece W flowing through the production line L1 using the information stored in the data server 100.

[0009] As shown in FIG. 1, in the production line L1, a plurality of workpieces W conveyed by a belt conveyor 50 are sequentially processed by a manufacturing device 51 in the conveying direction indicated by the white arrows in FIG. 1. The manufacturing device 51 operates using the electric power supplied from a power supply 53.

[0010] Each workpiece W is given identification information for uniquely identifying each workpiece W. Specifically, each workpiece W has an identification mark M in which a serial number as identification information is encoded attached thereto. In the present embodiment, a QR code (registered trademark) is used as the identification mark M. Note that the plurality of workpieces W may be workpieces having the same specifications as each other or workpieces having different specifications from each other.

[0011] At each of the first position P1 of the manufacturing line L1 and the second position P2 downstream of the first position P1, a reading device 54 is arranged. Each reading device 54 includes an imaging unit 55. The imaging unit 55 is attached at a position where it can image the identification mark M attached to the workpiece W. The reading device 54 acquires a serial number by reading the identification mark M, and stores it in association with the acquired serial number with the imaged date and time as the passing time. Further, the reading device 54 transmits a signal including information on the passing time and the serial number associated with each other to the data server 100.

[0012] In this embodiment, a QR code (registered trademark) is used as an identifier having identification information. However, for example, other types of identifiers such as RFID (Radio Frequency Identifier) can be used as the identifier.

[0013] The power meter 52 transmits a signal indicating the amount of power supplied from the power supply 53 to the manufacturing apparatus 51 to the data server 100. In this embodiment, the power meter 52 transmits the amount of power per hour for the past hour from the current time to the data server 100 every hour. The data server 100 is communicable with the emission amount calculation device 10.

[0014] The data server 100 as a storage device includes a CPU 110, a storage unit 120, and a communication unit 130. The CPU 110 executes programs stored in the storage unit 120 and executes various processes. The communication unit 130 exchanges information with other information processing devices via a network. The storage unit 120 stores traceability information 122 and energy consumption information 124. The traceability information 122 is information sequentially updated using information on the passing time and the serial number associated with each other transmitted from each reading device 54. Similarly, the energy consumption information 124 is information sequentially updated using the amount of power transmitted from the power meter 52.

[0015] The discharge amount calculation device 10 is configured as an information processing device including a CPU 12, a storage unit 16, and a communication unit 18. The CPU 12 executes programs stored in the storage unit 16 and performs various processes. The CPU 12 has a discharge amount calculation unit 14. The discharge amount calculation unit 14 is a functional unit realized by the CPU 12 executing a program stored in the storage unit 16. The communication unit 18 exchanges information with a data server 100 via a network. In the discharge amount calculation process described later, the communication unit 18 receives the traceability information 122 and the energy consumption information 124 stored in the storage unit 120. As the network, the Internet, a LAN (Local Area Network), a WAN (Wide Area Network), or the like can be used.

[0016] FIG. 2 is a diagram for explaining the traceability information 122 and the energy consumption information 124. The traceability information 122 includes information on the passing time at the first position P1 and the passing time at the second position P2 for each of the plurality of workpieces W. Specifically, as shown in FIG. 2, the traceability information 122 is information in which a serial number, a passing date and time as the passing time, and a passing location are associated with each other. "L1P1" shown in FIG. 2 indicates the first position P1 of the production line L1. "L1P2" in FIG. 2 indicates the second position P2 of the production line L1. FIG. 2 shows that the workpiece W with the serial number "S01" passed the first position P1 at 6:00 on January 18, 2022, and passed the second position P2 at 6:04 on the same day.

[0017] The energy consumption information 124 is information on the energy consumption of the energy used along with the operation of the production line L1. As shown in FIG. 2, the energy consumption information 124 is data in which the detection time and the amount of power consumed per hour as the unit time of consumption are associated with each other for each corresponding production line. The "corresponding production line" refers to the production line on which the manufacturing equipment using energy is arranged. For example, "bb" in FIG. 2 is the amount of power consumed in one hour from 5:00 to 6:00 on January 18, 2022 on the production line L1. Note that in FIG. 2, the "amount of power per minute" is information created in the emission amount calculation process described later.

[0018] FIG. 3 is a diagram in which, for each workpiece W, the period from passing through the first position P1 to passing through the second position P2 of the production line L1 is drawn with diagonal hatching with respect to the time on the horizontal axis. In FIG. 3, for example, it is shown that the workpiece W with the identification number "S01" passed through the first position P1 at 6:00 and passed through the second position P2 at 6:04. As shown in FIG. 3, in this embodiment, the workpiece W is input to the production line L1 every minute. Further, the flow period DP from passing through the first position P1 to passing through the second position P2 of each workpiece W is 4 minutes, which is shorter than 1 hour, which is the unit time of the amount of power included in the energy consumption information 124.

[0019] FIG. 4 is a flowchart of the emission amount calculation process executed by the emission amount calculation unit 14. The emission amount calculation process is a process performed on the workpiece W that has flowed through the production line L1. The emission amount calculation unit 14 executes the emission amount calculation process with one of the plurality of workpieces W as the target workpiece. In this embodiment, the case where the workpiece W with the identification number "S05" is the target workpiece will be illustrated and described.

[0020] As shown in FIG. 4, at step S10, the discharge amount calculation unit 14 sets the unit period UP shown in FIG. 3, which is the calculation target from step S12 to step S16 described later. Here, as shown in FIG. 3, the unit period UP is one period obtained by dividing the circulation period DP. In the present embodiment, the unit period UP is a period obtained by equally dividing the circulation period DP into four, and the time of the unit period UP is 1 minute. For the sake of explanation, as shown in FIG. 3, the four unit periods UP of the work W with the identification number "S05", which is the target work, are called the first unit period UP1, the second unit period UP2, the third unit period UP3, and the fourth unit period UP4 in ascending order of time. The discharge amount calculation unit 14 sets the target unit period UP in order from the earliest time among the plurality of unit periods UP. That is, in step S10, which is the first step executed after starting the discharge amount calculation process, the first unit period UP1 is set as the target unit period UP.

[0021] In step S12 shown in FIG. 4, the discharge amount calculation unit 14 uses the traceability information 122 to obtain the number of workpieces WN of the work W flowing through the production line L1 in the target unit period UP. As shown in FIG. 3, in the first unit period UP1, four workpieces W with identification numbers from "S02" to "S05" are flowing through the production line L1. Therefore, the number of workpieces WN obtained in step S 12 is "4".

[0022] In step S14 shown in FIG. 4, the emission amount calculation unit 14 acquires the unit energy consumption UE of the first unit period UP1 using the energy consumption information 124. Here, the unit energy consumption UE is the energy consumption per unit period UP. Specifically, in step S14, the emission amount calculation unit 14 divides the "amount of power consumption per hour" in FIG. 2 by the value 60 to calculate the "amount of power consumption per minute". In FIG. 2, for the sake of explanation, the "amount of power consumption per minute" is also noted. The first unit period UP1 is a period starting from 6:04 on January 18, 2022. Therefore, specifically in step S14, as the unit energy consumption UE, the value fkWh calculated by dividing the amount of power consumption per hour cckWh detected at 7:00 on January 18, 2022 shown in FIG. 2 by the value 60 is acquired.

[0023] In step S16 shown in FIG. 4, the emission amount calculation unit 14 divides the unit energy consumption UE by the number of workpieces WN to calculate the work energy consumption WE. The calculated work energy consumption WE is f / 4 kWh.

[0024] In step S18, the emission amount calculation unit 14 determines whether the work energy consumption WE amount has been calculated for all unit periods UP. If it is determined that the work energy consumption WE amount has not been calculated (step S18: NO), the emission amount calculation unit 14 returns the process to step S10.

[0025] The emission amount calculation unit 14 also executes steps S10 to S16 in the same manner as above for the unit periods UP from the second unit period UP2 to the fourth unit period UP4. In this embodiment, as shown in FIG. 3, in all unit periods UP from the second unit period UP2 to the fourth unit period UP4, the number of workpieces WN is "4". And in all unit periods UP from the second unit period UP2 to the fourth unit period UP4, the unit energy consumption UE is fkWh. For this reason, in all unit periods UP from the second unit period UP2 to the fourth unit period UP4, the work energy consumption WE is f / 4 kWh.

[0026] As shown in FIG. 4, when it is determined that the work energy consumption WE has been calculated for all unit periods UP (step S18: YES), the emission amount calculation unit 14 calculates the total energy consumption TE by summing up the work energy consumption WE for all unit periods UP in the distribution period DP (step S20). In the present embodiment, First unit period UP1 in the four unit periods UP from the first unit period UP1 to the fourth unit period UP4, the work energy consumption WE is f / 4 kWh. Therefore, the total energy consumption TE is f kWh.

[0027] In step S22, the emission amount calculation unit 14 converts the total energy consumption TE into the emission amount of greenhouse gases. In the present embodiment, the greenhouse gas is carbon dioxide. Then, the emission amount calculation unit 14 calculates the emission amount for the production line L1 of the work W with the serial number "S05" using the conversion formula for converting the amount of electric power stored in advance in the storage unit 16 into the emission amount [g] of carbon dioxide. After the execution of step S22, the emission amount calculation unit 14 ends this processing routine.

[0028] By the emission amount calculation process, the emission amount for each work W can be calculated using the amount of electric power used in the manufacturing apparatus 51. Thereby, the validity of the emission amount can be appropriately evaluated. Specifically, for example, for a plurality of works W having the same specifications, by comparing the emission amounts, for example, the variation in the emission amount per day can be confirmed. Also, for a plurality of works W having different specifications, the emission amounts can be compared. And by comparing the emission amounts, in order to reduce the emission amount, the material, size, design, etc. of the work W can be reviewed.

[0029] Step S12 is also called the number acquisition process, step S14 is also called the usage amount acquisition process, step S20 is also called the total calculation process, and step S22 is also called the conversion process.

[0030] According to the first embodiment described above, the emission amount calculation device 10 includes an emission amount calculation unit 14. In step S12, the emission amount calculation unit 14 uses the traceability information 122 to obtain the number of workpieces WN for each unit period UP of the target workpiece. Further, in step S14, the emission amount calculation unit 14 uses the energy consumption information 124 to obtain the unit energy consumption UE for each unit period UP. Then, in step S20, the emission amount calculation unit 14 calculates the total energy consumption TE by summing up the amount of work energy consumption WE calculated for each unit period UP. In step S22, the emission amount calculation unit 14 After conversion calculates the emission amount of greenhouse gases. Thereby, since the emission amount of greenhouse gases can be accurately calculated for each workpiece W, the validity of the emission amount can be appropriately evaluated.

[0031] Further, the energy consumption information 124 includes the power consumption per hour that is longer than the time of the circulation period DP. And in step S14, the emission amount calculation unit 14 calculates and obtains the power consumption for each unit period UP using the power consumption per hour. Thereby, the amount of information of the energy consumption information 124 can be reduced as compared with the case where the energy consumption information 124 has the power consumption for each unit period UP.

[0032] B. Second Embodiment: FIG. 5 is a schematic diagram showing the configuration of the emission amount calculation device 10, the data server 100, and the production lines L1 to L3 according to this embodiment. FIG. 6 is a diagram depicting the period from when the first position P1 of each production line L is passed until the second position P2 is passed with respect to the time on the horizontal axis for each workpiece W according to this embodiment. FIG. 7 is a diagram for explaining the energy consumption information 2124 according to this embodiment. FIG. 8 is a flowchart of the multi-line emission amount calculation process according to this embodiment. In this embodiment, since there are three production lines L, the emission amount calculation device 10 is different from the first embodiment in that it calculates the emission amount of greenhouse gases for the three production lines L. The same components as those in the first embodiment are denoted by the same reference numerals, and detailed descriptions are omitted as appropriate.

[0033] As shown in FIG. 5, in the present embodiment, a plurality of workpieces W flow through manufacturing line L2 and manufacturing line L3 in this order after manufacturing line L1. Manufacturing line L2 and manufacturing line L3 are collectively referred to as manufacturing line L. The manufacturing apparatus 151 disposed on manufacturing line L2 is a heating furnace that heats workpiece W. For the manufacturing apparatus 151, fuel gas supplied from a commercial fuel gas supply source 153 such as city gas is used for heating the heating furnace. The manufacturing apparatus 251 disposed on manufacturing line L3 is a cooling apparatus that cools workpiece W. Compressed air supplied from air compressor 253 is used for cooling the manufacturing apparatus 251. In the present embodiment, the amount of carbon dioxide emissions resulting from the power consumed by air compressor 253 is determined using the amount of air used by the air sent by air compressor 253 to manufacturing apparatus 251.

[0034] Flowmeter 152 transmits a signal indicating the flow rate of the fuel gas supplied from fuel gas supply source 153 to manufacturing apparatus 151 to data server 100. Flowmeter 252 transmits a signal indicating the flow rate of the compressed air supplied from air compressor 253 to manufacturing apparatus 251 to data server 100. In the present embodiment, similar to power meter 52, flowmeter 152 and flowmeter 252 transmit the flow rate per hour for the past hour from the current time to data server 100 every hour.

[0035] As shown in FIG. 6, in this embodiment, the workpiece W is input to each of the production lines L1, L2, and L3 every minute. Here, in order to distinguish each flow period DP, the flow periods DP of the production lines L1 to L3 are respectively referred to as the first flow period DP1, the second flow period DP2, and the third flow period DP3 in order. The flow period DP from when the workpiece W passes through the first position P1 of the production line L2 to when it passes through the second position P2 is 2 minutes. The flow period DP from when the workpiece W passes through the first position P1 of the production line L3 to when it passes through the second position P2 is 2 minutes. In the plurality of line discharge amount calculation processes described later, for the second flow period DP2 and the third flow period DP3 as well, similar to the first flow period DP1, the time of the unit period UP is set to 1 minute, and the unit period UP is set. Therefore, for both the second flow period DP2 and the third flow period DP3, two unit periods UP are set.

[0036] As shown in FIG. 7, the energy consumption information 2124 according to this embodiment includes information on the power consumption as the amount of electric power, the gas flow rate as the amount of fuel gas used, and the air flow rate as the amount of air used, corresponding to the three production lines L. The amount of electric power shown in FIG. 7 is the amount of electric power as the power consumption of the electric power used by the manufacturing apparatus 51 (FIG. 5) arranged on the production line L1. The gas flow rate is the flow rate as the fuel gas consumption of the fuel gas used by the manufacturing apparatus 151 (FIG. 5) arranged on the production line L2. The air flow rate is the flow rate as the air consumption of the air sent into the manufacturing apparatus 251 arranged on the production line L3.

[0037] Figure 8Regarding the multi-line emission calculation process shown, for this embodiment, the case where the work W with the identification number "S05" is the target work will be exemplified and described. In step S40, the emission calculation unit 14 sets the manufacturing line L to be the target of the next step S42. In this embodiment, the emission calculation unit 14 sets the target manufacturing line L in the order of manufacturing line L1, manufacturing line L2, and manufacturing line L3. That is, in S40 which is executed first after starting the multi-line emission calculation process, manufacturing line L1 is set as the target manufacturing line L.

[0038] In step S42, the emission calculation unit 14 executes the emission calculation process which is a subroutine. The processing content of the emission calculation process is the same as the emission calculation process shown in FIG. 4 described in the first embodiment. In step S42 which is executed first after starting the multi-line emission calculation process, the emission amount for the manufacturing line L1 is calculated for the target work.

[0039] In step S44, the emission calculation unit 14 determines whether the emissions have been calculated for all manufacturing lines L. If it is determined that the emissions have not been calculated for all manufacturing lines L (step S44: NO), the emission calculation unit 14 returns the process to step S40.

[0040] The emission calculation unit 14 also executes steps S40 and S42 for manufacturing lines L2 and L3. Since the number of workpieces WN is different between manufacturing lines L2 and L3 and manufacturing line L1, the case of calculating the emissions for manufacturing line L2 will be described as a representative. As shown in FIG. 6, in the first unit period UP of the second distribution period DP2 with the serial number "S05", two workpieces W with the identification numbers "S04" and "S05" are flowing through manufacturing line L2. Therefore, in step S12 (FIG. 4), the number of workpieces WN obtained is "2". The second distribution period DP2 with the serial number "S05" starts at 6:08 on January 18, 2022. For this reason, as shown in FIG. 7, the gas flow rate per hour is ii Nm 3 and the gas flow rate per minute is ii / 60 Nm3 Therefore, the work energy consumption WE for the first unit period UP of the second circulation period DP2 with the serial number "S05" calculated in step S16 (Fig. 4) is ii / 120 Nm 3 Similarly, for the second unit period UP of the second circulation period DP2 and the second circulation period DP2, the work energy consumption WE is calculated.

[0041] As shown in Fig. 8, when it is determined that the emissions have been calculated for all production lines L (step S44: YES), the emissions calculation unit 14 calculates the total emissions by summing up the emissions for all production lines L (step S46).

[0042] In step S48, the emissions calculation unit 14 creates emissions information associating the serial number with the total emissions, stores the created emissions information in the storage unit 16, and ends this processing routine. By creating emissions information in which the serial number and the total emissions are associated, the emissions can be arranged in chronological order using the serial number and the traceability information 122. Using the emissions arranged in chronological order, it is possible to efficiently verify the increase and decrease of emissions on a daily basis and a seasonal basis.

[0043] Step S46 is also called the total emissions calculation process, and step S48 is also called the creation process.

[0044] According to the second embodiment described above, the same effects as those of the first embodiment are achieved. Further, the emissions calculation unit 14 calculates the emissions of each of the plurality of production lines L in step S42, and calculates the total emissions by summing up all the emissions in step S46. Thereby, it is possible to calculate the emissions discharged from all the production lines L from production line L1 to production line L3. Also, by comparing the emissions of each of the plurality of production lines L for the same work W, it is possible to identify the production line L with a large amount of emissions among the plurality of production lines L.

[0045] In addition, the energy consumption information 2124 includes the power consumption of the electric power used in the manufacturing apparatus 51, the fuel gas consumption of the fuel gas used in the manufacturing apparatus 151, and the air consumption of the air sent into the manufacturing apparatus 251. Accordingly, the power amount, the fuel gas consumption amount, and the air consumption amount can be used as the usage information of the energy that is the emission source of the greenhouse gas.

[0046] In addition, in step S48, the emission amount calculation unit 14 creates emission amount information in which the serial number and the total emission amount are associated with each other. Accordingly, using the serial number, the emission amounts can be arranged in time series, and the increase and decrease of the emission amounts can be efficiently verified on a daily basis or a seasonal basis.

[0047] C. Other Embodiments: (C1) In the emission amount calculation process of the first embodiment described above, the processes are performed in the order of step S12 and step S14, but the order of each step is not limited to the above.

[0048] (C2) In the first embodiment described above, the unit energy consumption UE is calculated and acquired each time in step S14 of the emission amount calculation process. The acquisition method of the unit energy consumption UE is not limited to this. For example, the emission amount calculation unit 14 may calculate in advance the "amount of electric power per minute" for all times, store it in the storage unit 16, and refer to and acquire the information stored in the storage unit 16 in step S14.

[0049] (C3) In the multi-line emission amount calculation process according to the second embodiment described above, in step S42, after calculating the emission amount for each of the plurality of manufacturing lines L, in step S46, the plurality of emission amounts are totaled. Separately from this, when the conversion coefficient for converting the energy consumption amount into the emission amount is the same, after totaling the energy consumption amounts of each of the plurality of manufacturing lines L, the energy consumption amount may be converted into the emission amount to calculate the emission amount for each workpiece W.

[0050] (C4) The manufacturing apparatus 51 according to the first embodiment performs processing on the workpiece W. This application can be applied to the manufacturing apparatus 51 that uses electric power regardless of the type of work performed on the workpiece W. The same applies to the manufacturing apparatuses 151 and 251 according to the second embodiment. For example, the manufacturing apparatus 151 may be an apparatus equipped with a burner that uses fuel gas. The manufacturing apparatus 251 may be an air blowing apparatus equipped with a compressor. Further, in each of the above embodiments, the case where one type of energy is used for one manufacturing apparatus has been described. This application can also be applied to the case where a plurality of types of energy are used for one manufacturing apparatus. In this case, the emission amount calculation process may be applied for each type of energy.

[0051] (C5) In the second embodiment, two reading devices 54 are provided for each of the manufacturing lines L1 to L3. When the manufacturing lines L are continuous, the reading of the passing time at the second position P2 of the upstream manufacturing line L and the reading of the passing time at the first position P1 of the downstream manufacturing line L may be performed by one reading device 54. Further, in the second embodiment, the workpiece W continuously flows through the manufacturing line L1 and the manufacturing line L2. However, this is not limiting, and this application can also be applied to the case where there is a time interval between the time when the workpiece W finishes flowing through the manufacturing line L1 and the time when it is introduced into the manufacturing line L2.

[0052] (C6) In the first embodiment, the traceability information 122 has the serial number as the identification information associated with the passing time at the first position P1 and the passing time at the second position P2. The method of specifying each workpiece W in the traceability information 122 is not limited to the identification information. According to the emission amount calculation process, the emission amount for each workpiece W can be calculated using the number of workpieces W and the energy consumption amount in a specific time period. Therefore, for example, it is also possible to specify each workpiece W in the order of input introduced during the time period to be calculated.

[0053] The present disclosure is not limited to the above-described embodiments, and can be implemented in various configurations without departing from the gist thereof. For example, the technical features of the embodiments corresponding to the technical features in each form described in the summary of the invention can be appropriately replaced or combined in order to solve some or all of the above-described problems, or to achieve some or all of the above-described effects. Further, if the technical feature is not described as essential in this specification, it can be appropriately deleted.

Description of Reference Numerals

[0054] 10... Discharge amount calculation device, 12, 110... CPU, 14... Discharge amount calculation unit, 16, 120... Storage unit, 18, 130... Communication unit, 50... Belt conveyor, 51, 151, 251... Manufacturing device, 52... Electric power meter, 53... Power supply, 54... Reading device, 55... Imaging unit, 100... Data server, 122... Traceability information, 124, 2124... Energy consumption information, 152, 252... Flow meter, 153... Fuel gas supply source, 253... Air compressor, DP... Circulation period, DP1... First circulation period, DP2... Second circulation period, DP3... Third circulation period, L, L1 to L3... Manufacturing line, M... Identification mark, P1... First position, P2... Second position, UP... Unit period, UP1... First unit period, UP2... Second unit period, UP3... Third unit period, UP4... Fourth unit period, W... Work

Claims

1. An emission amount calculation device for calculating the emission amount of greenhouse gases, for a plurality of workpieces flowing through a production line having a first position and a second position downstream of the first position, (i) traceability information including information on the passing time at the first position and the passing time at the second position for each of the plurality of workpieces, and (ii) energy consumption information on the energy used in association with the operation of the production line, a communication unit that receives the information; and an emission amount calculation unit, wherein the emission amount calculation unit uses the traceability information, with one of the plurality of workpieces as a target workpiece, and for each of a plurality of unit periods obtained by dividing the circulation period from when the target workpiece passes through the first position to when it passes through the second position, obtains the number of workpieces flowing through the production line in a number acquisition process; uses the energy consumption information to obtain a unit energy consumption amount, which is the energy consumption amount for each of the plurality of unit periods, in a consumption amount acquisition process; for each of the plurality of unit periods, calculates the total energy consumption amount of the target workpiece during the circulation period by summing the workpiece energy consumption amounts for each of the plurality of unit periods calculated by dividing the unit energy consumption amount by the number of workpieces, in a total calculation process; and performs a conversion process of calculating the emission amount by converting the total energy consumption amount; there are a plurality of the production lines, and the plurality of workpieces flow through each of the plurality of production lines in order, the emission amount calculation unit calculates the emission amount of the target workpiece for each of the plurality of production lines, and further performs a total emission amount calculation process of calculating the total emission amount by summing the emission amounts for each of the plurality of production lines; the energy consumption information is the power consumption of the power used by a production device arranged in any one of the plurality of production lines, and includes the power consumption per unit time of the usage amount, which is longer than the time of the circulation period, in the consumption amount acquisition process, the emission amount calculation unit calculates and obtains the power consumption amount for each of the plurality of unit periods using the power consumption per unit time, an emission amount calculation device.

2. The emission amount calculation device according to claim 1, wherein identification information is assigned to each of the plurality of workpieces, the emission amount calculation unit calculates the emission amount for each of the plurality of workpieces, and further An emission amount calculation device that executes a creation process for creating emission amount information in which the identification information and the emission amount are associated with each other.

Images