JP2017151612A - CO2 emission calculation system and CO2 emission calculation method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To allow the emission of COcaused by the use of a terminal to be calculated at low cost.SOLUTION: A COemission calculation system includes a calculation unit that calculates the emission of COfor a prescribed period due to the use of a terminal for making communication by summing the emission of COfor the prescribed period at a terminal side and the emission of COfor the prescribed period at a network side. The calculation unit calculates each of the emission of COfor the prescribed period at the terminal side and the emission of COfor the prescribed period at the network side on the basis of publicized data input by a user or stored in a storage unit.SELECTED DRAWING: Figure 8

Description

The present invention relates to a CO ₂ emission calculation system and a CO ₂ emission calculation method.

There are companies that have set targets for the CO ₂ emission reduction effect by using ICT (Information and Communication Technology) (Non-patent Document 1). In order to manage the degree of achievement of such a goal, it is necessary to evaluate the CO ₂ emission reduction amount by the ICT service provided by the company. In the evaluation of the CO ₂ emission reduction effect by the use of ICT, an ICT service (e-mail, etc.) and an action assumed when there is no such service (for example, sending a letter, etc., hereinafter referred to as “conventional means”). The respective CO ₂ emission amounts are evaluated, and the difference is defined as the reduction amount (for example, Non-Patent Document 2). Therefore, in order to evaluate the reduction amount, it is necessary to calculate the CO ₂ emission amount by using the ICT service.

  Conventionally, for example, a usage scene is selected from statistical materials, and a conventional means is selected and a usage amount of both the ICT service and the conventional means is calculated based on a user questionnaire regarding the service (Non-patent Document 3).

NTT Group, “Realization of a Low Carbon Society”, [online], Internet <http://www.ntt.co.jp/kankyo/protect/lowcarbon/index.html> Nagao et al., "Development of BY effect evaluation technology", NTT Technical Journal 2015.1, 2014, p14-18 Iihashi et al., “Environmental impact reduction effect of network services”, 2014 IEICE Society Conference (Basic and Boundary Lectures), p98 “Mobile Phone / Smartphone“ Personal Use ”Survey 2013 Survey Report”, Nikkei BP Consulting, p291 Eco Leaf Product Environmental Information, “BIGLOBE Data Center System Evaluation Results”, [online], Internet <http://www.ecoleaf-jemai.jp/upload/label/file/prodobj-1883-pdf.pdf> NTT, “SmartCloud Desktop Evaluation Results”, [online], Internet <http://www.ntt.co.jp/kankyo/protect/label/smartcloud.html> Iihashi et al., “Estimation of Environmental Impact of Information and Communication Networks”, 2015 IEICE General Conference (Basic and Boundary Lectures), p104 Ministry of Internal Affairs and Communications, “Totaling and Estimating Traffic on the Internet in Japan (Ministry of Internal Affairs and Communications)” [online], Internet <http://www.soumu.go.jp/joho_tsusin/eidsystem/market01_05_03.html> Ministry of Internal Affairs and Communications, “Announcement of Quarterly Data on Number and Share of Telecommunications Services”, [online], Internet <http://www.soumu.go.jp/menu_news/s-news/01kiban04_02000092.html> “CFP Program” [online], Internet <https://www.cfp-japan.jp/info/index.php> “Environmental Action Plan for Electricity Business”, [online], Internet <https://www.fepc.or.jp/environment/warming/environment/pdf/2014.pdf> [Online] Internet <http://www.sonymobile.co.jp/xperia/softbank/z3/spec/spec.html>

However, it takes a huge cost of several million yen to conduct a single questionnaire. Since continuous evaluation is necessary to implement PDCA (plan-do-check-act) to achieve the CO ₂ emission reduction target, a method for evaluating at a low cost is required.

The present invention has been made in view of the above points, and an object of the present invention is to be able to calculate the CO ₂ emission amount due to use of a terminal at a low cost.

Therefore in order to solve the above problems, CO ₂ emission calculating system, the CO ₂ emissions for a predetermined period by use of a terminal performing communication, the predetermined period of CO ₂ emissions and the network side of the predetermined period of terminal of CO ₂ has a calculation unit for calculating the sum of the emissions, the calculation unit, the each of the CO ₂ emissions of the predetermined period of CO ₂ emissions and the network side of the predetermined period of the terminal side, Calculation is based on published data input by the user or stored in the storage unit.

It is possible to calculate the CO ₂ emission amount due to the use of the terminal at a low cost.

It is a diagram showing a calculation method of emissions of CO ₂ per year of the network side. It is a diagram showing a calculation method of manufacturing during CO ₂ emissions per year terminal. It is a diagram showing a calculation method of disposal when CO ₂ emissions per year terminal. It is a diagram showing a calculation method used when CO ₂ emissions per year terminal. It is a diagram showing a calculation method of the CO ₂ emissions per year during terminal operation. It is a diagram showing a calculation method of the CO ₂ emissions per year during the terminal stand. It is a diagram showing a hardware configuration example of a CO ₂ emission calculating device in an embodiment of the present invention. It is a diagram illustrating a functional configuration example of a CO ₂ emission calculating device in an embodiment of the present invention. It is a flowchart for explaining an example of a calculation procedure of the CO ₂ emissions per year by the terminal use.

Hereinafter, embodiments of the present invention will be described with reference to the drawings. In order to evaluate the CO ₂ emission reduction amount by a certain ICT service, it is necessary to calculate the CO ₂ emission amount per contract of the ICT. Therefore, in the present embodiment, it is assumed that one contract = 1 terminal, and a method of calculating CO ₂ emissions per year by using one terminal is disclosed. The terminal refers to a communicable terminal used by a user of the ICT service such as a smartphone, a feature phone, a tablet terminal, or a PC (Personal Computer).

When evaluating the CO ₂ emissions of smartphones, in the conventional technology, the usage time for each usage scene shown in the table on p17 of Non-Patent Document 2 is obtained by a questionnaire to calculate the CO ₂ emissions (non-patent). Refer to FIG. 6 of Document 2.) No statistical data describing the usage time for each usage scene has been found. In the present embodiment, in order to enable evaluation from information that can be obtained from documents such as statistical materials or materials published on the Internet, the average of smartphones from the published material (Non-Patent Document 4) An evaluation formula for estimating the operation time and calculating the CO ₂ emission amount using this is disclosed.

The evaluation formula is as follows.
CO ₂ emissions per year by the terminal utilizing = where CO ₂ emissions per year CO ₂ emissions + data center side per year CO ₂ emissions + network side per year terminal According to Non-Patent Document 5, the CO ₂ emission amount on the data center side is 0.78 kg-CO ₂ per person. According to Non-Patent Document 6, the CO ₂ emission amount of the entire service including the data center is 159 kg-CO ₂ per person. Thus, when the entire service is evaluated, the data center portion is relatively small. Therefore, in the present embodiment, the CO ₂ emission amount on the data center side is ignored. This service is an example, but the same tendency is observed for other services. Therefore, the above evaluation formula is approximated by the following evaluation formula (1).

CO ₂ emissions per year CO ₂ emissions + network side per year CO ₂ emissions = terminal per year by the terminal utilizing (1)
In the evaluation formula (1), the CO ₂ emission amount per year on the terminal side is expressed by the following formula (2).

CO ₂ emissions per year on the terminal side = CO ₂ emissions during manufacture of the terminal per year + CO ₂ emissions during use of the terminal per year + CO ₂ emissions during disposal per year of the terminal ... (2)
Note that the various CO ₂ emission amounts calculated in the present embodiment are estimated values.

Hereinafter, CO ₂ emissions per year network side, produced when CO ₂ emissions terminal, when using CO ₂ emissions terminals, and for each of the calculation methods of waste during CO ₂ emissions terminal will be described.

FIG. 1 is a diagram showing a calculation method of CO ₂ emissions per year on the network side. FIG 1, CO ₂ emissions per year on the network side _(kg-CO 2 / (year-line)) is the total of the mobile communication network to the CO ₂ emissions of the transmission _(kg-CO 2 / MByte) It is shown that the calculation is performed by multiplying the traffic amount (bps / year) and dividing by 8000000, and further dividing by the number of mobile communication contracts (lines).

Here, the CO ₂ emission amount for transmission refers to the CO ₂ emission amount required for transmitting the unit data amount. In FIG. 1, 1 MByte is the unit data amount. For the transmission CO ₂ emission amount, for example, a trial calculation result described in Non-Patent Document 7 can be used.

  The total traffic volume of the mobile communication network refers to the total traffic volume per year in the mobile communication network. As the total traffic amount of the mobile communication network, for example, a value obtained by summing the total download traffic and the total upload traffic of mobile communication from Non-Patent Document 8 can be adopted.

  The number of mobile communication contracts refers to the number of mobile communication contracts. For example, the value of the number of mobile communication contracts in Non-Patent Document 9 can be used.

  800000 is a coefficient for converting bps (bit per second), which is a unit of the total traffic, into Byte per second.

FIG. 2 is a diagram illustrating a method for calculating the amount of CO ₂ emissions during manufacture of the terminal per year. In FIG. 2, the CO ₂ emission amount (kg-CO ₂ / (year / unit)) at the time of manufacture of the terminal per year represents the CO ₂ emission amount (kg-CO ₂ / year) at the time of manufacture of the terminal. It is shown that it is calculated by dividing by the years of use (years).

Here, the CO ₂ emission amount at the time of manufacturing the terminal refers to the total amount of CO ₂ discharged at the time of manufacturing the terminal, and can be obtained from Non-Patent Document 10, for example. In Non-Patent Document 10, using a specific product name as a keyword, for a product related to the product name, CO ₂ emissions per product, “raw material procurement”, “production”, “distribution”, “use / The ratio of CO ₂ emissions in each process of “maintenance management” and “disposal / recycling” can be obtained. For example, “https://www.cfp-japan.jp/info/p_detail.php?id=257” describes these values for a specific product. Therefore, at the time of implementation of this embodiment, these values are obtained for the product names of typical terminals, and the ratio of “raw material procurement” + “production” with respect to the CO ₂ emission amount per product. A value obtained by multiplying the ratio of “distribution” may be the CO ₂ emission amount at the time of manufacturing the terminal.

In addition, the service life of the terminal is the service life expected for the terminal. For example, in Non-Patent Document 10, an expected service period for a specific product can be used. Incidentally, for dividing the manufacture time CO ₂ emissions terminals age of the terminal is to allocate production during CO ₂ emissions terminals, in each year of terminals is used.

FIG. 3 is a diagram illustrating a method of calculating the amount of CO ₂ emissions during disposal per year of the terminal. In FIG. 3, the terminal CO ₂ emissions per year (kg-CO ₂ / (year / unit)) of the terminal are the same as the terminal CO ₂ emissions (kg-CO ₂ / year) of the terminal. It is shown that it is calculated by dividing by the years of use (years).

Here, the CO ₂ emission amount at the time of disposal of the terminal means the total amount of CO ₂ emitted at the time of disposal of the terminal, and can be obtained from Non-Patent Document 10, for example. Regarding the product names of typical terminals at the time of implementation of the present embodiment, the CO ₂ emission amount per product and the ratio of CO ₂ emission amount in the process of “disposal / recycling” are obtained from Non-Patent Document 10. By multiplying these two values, the CO ₂ emission amount at the time of disposal of the terminal can be obtained.

The service life of the terminal is as described with reference to FIG. Incidentally, for dividing the waste during CO ₂ emissions terminals age of the terminal is to allocate waste time CO ₂ emissions terminals, in each year of terminals is used.

FIG. 4 is a diagram illustrating a method for calculating CO ₂ emissions during use of the terminal per year. FIG. 4 shows that the CO ₂ emissions during use of the terminal per year (kg-CO ₂ / (year / unit)) are the CO ₂ emissions per year during operation of the terminal (kg-CO ₂ / ( It is shown that it is calculated by the sum of CO ₂ emissions per year (kg-CO ₂ / (year · unit)) during terminal standby.

Here, the CO ₂ emission amount per year when the terminal is operated is the CO ₂ emission amount per year while the user operates the terminal. Moreover, CO ₂ emissions per year during the terminal stand is a CO ₂ emissions per year while the user is not operating the terminal. Here, for convenience, “call” is an example of the operation.

FIG. 5 is a diagram illustrating a method of calculating the CO ₂ emission amount per year when the terminal is operated. In FIG. 5, the CO ₂ emission amount per year (kg-CO ₂ / (year / unit)) at the time of operating the terminal is multiplied by the operation time (h / year) to the operation power consumption (kW / unit). It has been shown to be calculated by multiplying the further emission factor _{(kg-CO 2 / kWh)} .

  Here, the operation time refers to the time during which the user operates the terminal. A method for calculating the operation time will be described later. Further, the emission coefficient refers to an emission amount per electric energy, and for example, a value described on page 5 of Non-Patent Document 11 can be used.

In addition, as shown in the lower part of FIG. 5, the power consumption during operation is the CO ₂ emission amount (kg-CO ₂ / unit) during the usage period of the terminal as an emission coefficient (kg-CO ₂ / kWh). Divided by 365 days, which is the number of days in a year, further divided by the number of years of use (year) of the terminal, and further divided by the continuous call time. In the lower part of FIG. 5, the portion excluding the continuous talk time corresponds to the amount of power (kWh / unit / day) stored in one full charge.

Here, the CO ₂ emission amount (kg-CO ₂ / unit) during the usage period of the terminal means the total amount of CO ₂ emitted during the usage period (year of use) of the terminal, and can be obtained from Non-Patent Document 10. . Regarding the product names of typical terminals at the time of implementation of the present embodiment, the CO ₂ emission amount per product and the ratio of the CO ₂ emission amount in the process of “use and maintenance” are obtained from Non-Patent Document 10. Thus, by multiplying these two values, it is possible to obtain the CO ₂ emission amount during the usage period of the terminal.

  The continuous call time refers to a time during which a continuous call can be made with one charge, and can be obtained, for example, from specifications relating to typical terminal products at the time of implementation of the present embodiment. For example, Non-Patent Document 12 describes continuous call time for a specific product.

FIG. 6 is a diagram illustrating a method of calculating the CO ₂ emission amount per year when the terminal is on standby. FIG. 6 shows that the CO ₂ emission amount (kg-CO ₂ / (year / unit)) per year when the terminal is on standby is changed from 8760 to operation time (h / year) on standby power consumption (kW / unit). ) multiplied by the value obtained by subtracting the, it has been shown to be calculated by further multiplying the emission factor _{(kg-CO 2 / kWh)} .

  Here, 8760 is a time for one year (= 24 × 365). That is, the standby time per year is calculated by reducing the operation time from 8760.

  The standby power consumption can be calculated by the equation shown in the lower part of FIG. The lower expression in FIG. 6 is obtained by replacing the last term (continuous call time (h / day)) in the lower expression in FIG. 5 with “continuous standby time (h / day). Is a time during which continuous standby is possible with a single charge, and can be obtained, for example, from specifications relating to representative terminal products at the time of implementation of the present embodiment. The continuous waiting time for a specific product is listed.

Hereinafter, based on the above evaluation formula (1) will be described CO ₂ emission calculating unit 10 for calculating the CO ₂ emissions per year on the terminal side.

FIG. 7 is a diagram illustrating a hardware configuration example of the CO ₂ emission calculating device according to the embodiment of the present invention. CO ₂ emission calculating unit 10 in FIG. 7, the drive apparatus 100 are connected to each other by a bus B, respectively, an auxiliary storage device 102, memory device 103, CPU 104, the interface unit 105, display unit 106, and an input device 107 such as a Have

A program that realizes processing in the CO ₂ emission calculation device 10 is provided by a recording medium 101 such as a CD-ROM. When the recording medium 101 storing the program is set in the drive device 100, the program is installed from the recording medium 101 to the auxiliary storage device 102 via the drive device 100. However, the program need not be installed from the recording medium 101 and may be downloaded from another computer via a network. The auxiliary storage device 102 stores the installed program and also stores necessary files and data.

The memory device 103 reads the program from the auxiliary storage device 102 and stores it when there is an instruction to start the program. The CPU 104 realizes functions related to the CO ₂ emission amount calculation device 10 according to a program stored in the memory device 103. The interface device 105 is used as an interface for connecting to a network. The display device 106 displays a GUI (Graphical User Interface) or the like by a program. The input device 107 includes a keyboard and a mouse, and is used for inputting various operation instructions.

Note that the CO ₂ emission calculation device 10 may be realized using a plurality of computers.

FIG. 8 is a diagram illustrating a functional configuration example of the CO ₂ emission calculating device according to the embodiment of the present invention. In FIG. 8, the CO ₂ emission amount calculation device 10 includes an input control unit 11, a coefficient acquisition unit 12, a calculation unit 13, an output control unit 14, and the like. Each of these units is realized by processing that one or more programs installed in the CO ₂ emission calculation device 10 cause the CPU 104 to execute. The CO ₂ emission calculation device 10 also uses a database such as the coefficient DB 15 and the evaluation formula DB 16. Each of these databases can be realized by using, for example, a storage device that can be connected to the auxiliary storage device 102 or the CO ₂ emission calculation device 10 via a network.

The input control unit 11 receives input data from the user via the input device 107 or the like. In the present embodiment, in order to calculate the CO ₂ emission amount per year on the terminal side, it is necessary to input the following published data described above.
(A) Transmission CO ₂ emissions (kg-CO ₂ / MByte) (FIG. 1)
(B) Total traffic volume of the mobile communication network (bps / year) (Fig. 1)
(C) Number of mobile communication contracts (lines) (Figure 1)
(D) CO ₂ emissions during manufacture of terminal (kg-CO ₂ / unit) (FIG. 2)
(E) Year of use of terminal (year) (FIGS. 2, 3, 5, and 6)
(F) CO ₂ emissions during terminal disposal (kg-CO ₂ / unit) (Fig. 3)
(G) CO ₂ emissions during use period of terminal (kg-CO ₂ / unit) (FIGS. 5 and 6)
(H) emission factor _{(kg-CO 2 / kWh)} ( FIG. 5, FIG. 6)
(I) Operation time (h / year) (FIGS. 5 and 6)
(J) Continuous call time (Fig. 5)
(K) Continuous standby time (FIG. 6)
Among these, the input control unit 11 accepts input of (b) the total traffic amount of the mobile communication network and (c) the number of mobile communication contracts, which are likely to change with the passage of time. The input control unit 11 also receives (i) input of parameters for calculating the operation time.

The operation time can be calculated as follows. For example, Non-Patent Document 4 describes the ratio of operation time for each time width as the daily operation time of the terminal.
Less than 30 minutes / day ... ○○%
30 minutes or more to less than 1 hour / day ・ ・ ・ ○○%
1 hour or more to less than 2 hours / day ・ ・ ・ ○○%
2 hours or more to less than 3 hours / day ... XX%
3 hours or more / day ... ○○%
The input control unit 11 accepts an input of the ratio of the operation time for each time width as a parameter for calculating the operation time. Therefore, in this embodiment, in addition to (b) the total traffic amount of the mobile communication network and (c) the number of mobile communication contracts, the ratio of the operation time for each time width is used as the input data. However, the calculation result of the operation time based on the ratio of the operation time for each time width may be input data. Further, the input data may be stored in advance in the coefficient DB 15 as with other values.

  The coefficient acquisition unit 12 acquires a coefficient stored in the coefficient DB 15. Here, the coefficient refers to a parameter obtained by removing input data from the published data (a) to (k) described above. The value of each coefficient is obtained from each of the above-mentioned documents and stored in the coefficient DB 15 in advance. However, the input control unit 11 may also accept input for data stored in the coefficient DB 15.

  In the following, when referring to specific input data or specific coefficients, the codes (a) to (k) described above are used to identify input data or coefficients.

The calculation unit 13 calculates the CO ₂ emission amount per year by using the terminal based on each input data, each coefficient, and each calculation formula stored in the evaluation formula DB 16. The evaluation formula DB 16 stores the evaluation formulas (1) and (2) and the formulas shown in FIGS.

  The output control unit 14 outputs the calculation result by the calculation unit 13.

Hereinafter, a processing procedure executed by the CO ₂ emission calculation device 10 will be described. FIG. 9 is a flowchart for explaining an example of a procedure for calculating the CO ₂ emission amount per year by using the terminal.

  In step S <b> 101, the input control unit 11 accepts input of parameters for calculating the total traffic amount of the mobile communication network, the number of mobile communication contracts, and the operation time (the ratio of operation time for each time width) from the user.

  Subsequently, the coefficient acquisition unit 12 acquires each coefficient from the coefficient DB 15 (S102).

Subsequently, the calculation unit 13 calculates the operation time based on the ratio of the operation time for each time width (S103). For example, a value obtained by multiplying a weighted average weighted by a ratio corresponding to each time width for the median value of each time width by 365 (days) is calculated as the operation time (per year). Here, the median value of each time width may be the following value, for example.
Less than 30 minutes ... 15 minutes 30 minutes to less than 1 hour ... 45 minutes 1 hour to less than 2 hours ... 90 minutes 2 hours to less than 3 hours ... 150 minutes 3 hours or more ... 225 minutes Subsequently, the calculation unit 13 calculates the standby power consumption by substituting the coefficient (g), the coefficient (h), the coefficient (e), and the coefficient (k) into the lower calculation formula of FIG. (S104). Subsequently, the calculation unit 13 substitutes the calculation result (standby power consumption), the operation time, and the coefficient (h) in step S104 in the upper calculation formula of FIG. A CO ₂ emission amount is calculated (S105).

Subsequently, the calculation unit 13 substitutes the coefficient (g), the coefficient (h), the coefficient (e), and the coefficient (j) in the lower calculation formula of FIG. S106). Subsequently, the calculation unit 13 substitutes the calculation result (power consumption during operation), the operation time, and the coefficient (h) in step S106 in the upper calculation formula in FIG. A CO ₂ emission amount is calculated (S107).

Subsequently, the calculation unit 13 obtains the calculation result of step S105 (CO ₂ emission amount per year when the terminal is on standby) and the calculation result of step S107 (CO ₂ emission amount per year when the terminal is operated). 4 is substituted into the equation of FIG. 4 to calculate the in-use CO ₂ emission amount per year of the terminal (S108).

Subsequently, the calculation unit 13 substitutes the coefficient (f) and the coefficient (e) into the equation of FIG. 3 to calculate the CO ₂ emission amount at the time of disposal of the terminal per year (S109).

Subsequently, the calculation unit 13 substitutes the coefficient (d) and the coefficient (e) into the equation of FIG. 2 to calculate the manufacturing CO ₂ emission amount per year of the terminal (S110).

Subsequently, the calculation unit 13 adds the calculation result of step S108 (CO ₂ emissions during use of the terminal per year) and the calculation result of step S109 (CO ₂ ) and the calculation result of step S110 (manufacturing CO ₂ emissions per year of the terminal) are substituted to calculate the CO ₂ emissions per year on the terminal side (S111).

Subsequently, the calculation unit 13 substitutes the coefficient (a), the input data (b), and the input data (c) into the equation of FIG. 1 to calculate the CO ₂ emission amount per year on the network side. (S112).

Subsequently, the calculation unit 13 adds the calculation result of Step S111 (CO ₂ emission amount per year on the terminal side) and the calculation result of Step S112 (CO ₂ per year on the network side) to the evaluation formula (1). The amount of CO ₂ emission per year due to terminal use is calculated (S113).

Subsequently, the output control unit 14 outputs the calculation result of the CO ₂ emission amount per year by using the terminal (S114). The form of output is not limited to a predetermined one. It may be displayed on the display device 106, output to a printer, or transmitted to another device via a network.

In the above, the number of years of use of the terminal (e), the amount of CO ₂ emission at the time of disposal of the terminal (f), the amount of CO ₂ emission during the period of use of the terminal (g), the continuous call time (j), and the continuous standby time ( k) and the like are values that may depend on the model or product of the terminal. Therefore, these coefficients may be stored in the coefficient DB 15 for each model (for each product). In this case, in step S101, a model name or a product name may be input by the user, and a coefficient corresponding to the model name or the product name may be acquired from the coefficient DB 15.

  Alternatively, representative values (median value, average value, etc.) regarding a plurality of models or products may be adopted as these coefficients. In this case, the coefficient of each model or each product may be weighted according to the market share or performance (for example, display size) of the model or product.

As described above, according to the present embodiment, it is possible to calculate the CO ₂ emission amount due to the use of the terminal based on the published data published in various statistical materials and other materials. Therefore, it is not necessary to perform a questionnaire to calculate the CO ₂ emission amount. As a result, it is possible to calculate the CO ₂ emission amount due to the use of the terminal at a low cost.

In the above, the example of CO ₂ emissions per year is calculated, the length of the period for the calculation target of the CO ₂ emissions may be appropriately changed.

When a smartphone is applied to a terminal, CO ₂ related to a specific ICT service (for example, FLET'S (registered trademark), Xi (crossy) (registered trademark), FOMA (registered trademark), etc.) provided for the smartphone. When evaluating the emission reduction amount, it is also possible to calculate the CO ₂ emission amount due to the use of the terminal for the service. That is, the CO ₂ emission amount due to terminal use may be multiplied by the number of service contracts.

In addition, when a PC or a feature phone is applied to the terminal, a broadband service or a mobile service using a feature phone can be evaluated. In this case, as for the announcement data depending on the terminal, the announcement data of the PC or the feature phone may be collected. Further, the PC, to consider one contract one household, the case of obtaining the CO ₂ emissions per person, the CO ₂ emissions per contract, may be divided by the average number per household.

Further, by accumulating the terminal usage time and the CO ₂ emission amount per information amount in the coefficient DB 15 every year, linear future prediction is also possible.

In the present embodiment, the CO ₂ emission calculation device 10 is an example of a CO ₂ emission calculation system. One year is an example of a predetermined period. The coefficient DB 15 is an example of a storage unit.

  As mentioned above, although the Example of this invention was explained in full detail, this invention is not limited to such specific embodiment, In the range of the summary of this invention described in the claim, various deformation | transformation・ Change is possible.

10 CO ₂ emission calculating unit 11 input control unit 12 coefficient acquisition unit 13 calculation unit 14 outputs the control section 15 coefficient DB
16 Evaluation DB
100 drive device 101 recording medium 102 auxiliary storage device 103 memory device 104 CPU
105 interface device 106 display device 107 input device B bus

Claims (8)

CO ₂ emissions in a predetermined period by use of a terminal that performs communication having a calculation unit for calculating the sum of the CO ₂ emissions of the predetermined period of CO ₂ emissions and the network side of the predetermined period of terminal ,
Said computing unit, each of the CO ₂ emissions of the predetermined period of CO ₂ emissions and the network side of the predetermined period of the terminal side, based on published data stored in or the storage unit is input by the user calculate,
CO ₂ emission calculation system characterized by this. The calculation unit includes published data indicating the CO ₂ emission amount for the predetermined period on the network side, published data indicating the CO ₂ emission amount required for transmission of the unit data amount, and published data indicating the total traffic amount of the network. And published data indicating the number of contracts of communication using the network,
The CO ₂ emission amount calculation system according to claim 1. Said computing unit, the CO ₂ emissions of the predetermined period of the terminal, and CO ₂ emissions for a predetermined period of time of manufacturing the terminal, the CO ₂ emissions of a given period at the time of use of the terminal, discarding terminal Calculated by the sum of CO ₂ emissions during a given period of time,
Said computing unit, each of said and CO ₂ emissions for a predetermined period of time of manufacturing the terminal, the CO ₂ emissions of a given period at the time of use of the terminal, the CO ₂ emissions for a predetermined period of time of disposal of the terminal Calculate based on published data,
The CO ₂ emission calculation system according to claim 1 or 2, wherein The calculation unit divides the CO ₂ emission amount during a predetermined period at the time of manufacturing the terminal by the public data indicating the CO ₂ emission amount required for manufacturing the terminal by the public data indicating the usage period of the terminal. calculated by the CO ₂ emissions for a predetermined period of time of disposal of the terminal, the published data showing the CO ₂ emission amount requiring the disposal of the terminal, dividing by published data showing the use period of the terminal Calculated by
The CO ₂ emission calculation system according to claim 3. The calculation unit calculates a CO ₂ emission amount during a predetermined period when the terminal is used by a sum of a CO ₂ emission amount during operation of the terminal and a CO ₂ emission amount during standby of the terminal;
Calculating said computing unit, in which the CO ₂ emissions during operation of the terminal, each of the CO ₂ emissions during standby of the terminal, based on published data stored in or the storage unit is input by the user To
The CO ₂ emission amount calculation system according to claim 3 or 4, characterized in that: The calculation unit includes CO ₂ emissions during operation of the terminal, power consumption during operation of the terminal, published data indicating the operation time of the terminal, and published data indicating CO ₂ emissions per power amount. And calculating the CO ₂ emissions during standby of the terminal, the power consumption during standby of the terminal, published data indicating the operation time of the terminal, and the CO ₂ emissions per power amount Calculate based on published data,
The CO ₂ emission amount calculation system according to claim 5. The calculation unit includes power consumption during operation of the terminal, CO ₂ emissions during the usage period of the terminal, published data indicating the CO ₂ emissions per amount of power, usage period of the terminal, Calculated based on the continuous operation time of the terminal, and the standby power consumption of the terminal, the CO ₂ emission amount during the use period of the terminal, and the published data indicating the CO ₂ emission amount per the electric energy amount, Calculate based on the usage period of the terminal and the continuous standby time of the terminal,
The CO ₂ emission calculation system according to claim 6. Computer
CO ₂ emissions in a predetermined period by use of a terminal that performs communication, perform the calculation procedure of calculating the sum of the CO ₂ emissions of the predetermined period of CO ₂ emissions and the network side of the predetermined period of terminal ,
The calculation procedure, each of the CO ₂ emissions of the predetermined period of CO ₂ emissions and the network side of the predetermined period of the terminal side, based on published data stored in or the storage unit is input by the user calculate,
A CO ₂ emission calculation method characterized by that.

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