JP2012047600A - Power management apparatus, and power management system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a power management apparatus and a power management system capable of presenting influences on energy consumption caused by external influences regardless of the will of a user.SOLUTION: A power management apparatus 1 includes: an acquisition section 1a for acquiring electricity consumption of an indoor device 3; a power storage section 1b for storing a history of the acquired electricity consumption; an event detection section 1c for detecting at least the situation where a person stays indoors; an event storage section 1d for storing a history of the stay situation; a comparison section 1e for detecting a change in stay situation between two periods different from each other; a first calculation section 1f for calculating the amount of change in the electricity consumption of the device 3 caused by the change in stay situation as an externally influenced electricity amount; and a display section 1h for displaying the externally influenced electricity amount.

Description

  The present invention relates to a power management apparatus and a power management system.

  2. Description of the Related Art Conventionally, there are power management apparatuses and power management systems that display the amount of electricity used in home appliances for a predetermined period, and compare and display the amount of electricity used and a reference value (see, for example, Patent Document 1).

  For example, the system described in Patent Document 1 discloses a configuration for comparing and displaying the amount of electricity used in a certain period before the user operation time and the amount of electricity used in a certain period after the user operation time. . Then, by changing the usage of the devices in the preceding and following periods, it is possible to grasp the change in the amount of electricity used in the preceding and following periods and the change in the amount of electricity used by changing the usage of the electrical device.

Japanese Patent Laid-Open No. 2008-202985

  However, even though the user is making efforts to save energy, the amount of electricity used does not decrease as expected due to external influences (temperature, humidity, wind speed, number of people in the room, etc.) that are not related to the user's intention. Sometimes. In such a case, if the user is only presented with the result that “the amount of electricity used has not decreased”, the user cannot maintain the motivation to continue the efforts for energy saving.

  The present invention has been made in view of the above reasons, and an object of the present invention is to provide a power management apparatus and a power management system capable of presenting an influence on an energy usage amount due to an external influence not related to a user's intention. There is.

  The power management apparatus of the present invention detects an stay of a person at least indoors, an acquisition unit that acquires the amount of electricity used by an indoor device, a first storage unit that stores a history of the acquired amount of electricity used A detection unit; a second storage unit that stores the stay status history; a comparison unit that detects changes in the stay status in two different periods; and electricity of the device based on the change in the stay status A first calculation unit that calculates the amount of change in usage as an external influence electric quantity, and a display unit that displays the external influence electric quantity are provided.

  The power management apparatus of the present invention includes an acquisition unit that acquires the amount of electricity used by an indoor device, a first storage unit that stores a history of the acquired amount of electricity used, and a detection unit that detects the temperature of at least a predetermined space A second storage unit that stores the temperature history, a comparison unit that detects changes in the temperature in two different periods, and an amount of change in the amount of electricity used by the device due to the change in temperature A first calculation unit that calculates the amount of externally influenced electricity, and a display unit that displays the amount of externally affected electricity.

  The power management apparatus according to the present invention includes an acquisition unit that acquires the amount of electricity used by an indoor device, a first storage unit that stores a history of the acquired amount of electricity used, a staying situation of at least an indoor person, and a predetermined space A detection unit that detects the temperature of the stay, a second storage unit that stores the history of the stay status and the history of the temperature, and a comparison that detects each change in the stay status and the temperature in two different periods A first calculation unit that calculates the amount of change in the amount of electricity used by the device according to the amount of change in the stay status and the temperature as an external influence electric amount, and a display unit that displays the external influence electric amount It is characterized by providing.

  In this invention, it is preferable that the staying state is represented by a value obtained by multiplying the staying time of a person existing indoors and the number of persons existing indoors in the period.

  In the present invention, the first calculation unit may change the stay status in two different periods, change the temperature in two different periods, or the stay in two different periods. It is preferable to provide a conversion unit that converts each change in the situation and the temperature into the external influence electric quantity.

  In this invention, the display unit includes a second calculation unit that calculates a difference between the amount of change in the amount of electricity used by the device and the external influence electric quantity as the internal influence electric quantity in each of the two periods. It is preferable to display the external influence electric quantity and the internal influence electric quantity.

  In this invention, it comprises a third calculation unit for calculating the amount of change in the amount of electricity used by the device in each of the two periods, and the display unit changes the amount of externally influenced electricity and the amount of electricity used by the device. It is preferable to display the quantity.

  In the present invention, the acquisition unit acquires the amount of electricity used for each of a plurality of devices, the first storage unit stores a history of the amount of electricity used for each device, and the two periods include the period of time. The difference between the amount of change in the amount of electricity used by each of the plurality of devices and the amount of externally influenced electricity of each of the plurality of devices is calculated as the amount of internally influenced electricity of each of the plurality of devices, It is preferable to include a fourth calculation unit that identifies the device that is determined to have a large internal influence electric quantity based on a determination criterion.

  In the present invention, the acquisition unit acquires the amount of electricity used for each of a plurality of devices, the first storage unit stores a history of the amount of electricity used for each device, and the two periods include the period of time. The amount of change in the amount of electricity used for each of a plurality of devices is calculated, and the device that is determined to have a large amount of internally influenced electricity is identified based on the calculated amount of change in the amount of electricity used for each device. It is preferable to provide a fifth calculation unit.

  The power management system of the present invention detects a staying state of at least an indoor person, a measuring unit that measures the amount of electricity used in an indoor device, a first storage unit that stores a history of measurement results of the amount of electricity used A detection unit; a second storage unit that stores the stay status history; a comparison unit that detects changes in the stay status in two different periods; and electricity of the device based on the change in the stay status A first calculation unit that calculates the amount of change in usage as an external influence electric quantity, and a display unit that displays the external influence electric quantity are provided.

  The power management system of the present invention includes a measurement unit that measures the amount of electricity used in an indoor device, a first storage unit that stores a history of measurement results of the amount of electricity used, and a detection unit that detects the temperature of at least a predetermined space A second storage unit that stores the temperature history, a comparison unit that detects changes in the temperature in two different periods, and an amount of change in the amount of electricity used by the device due to the change in temperature A first calculation unit that calculates the amount of externally influenced electricity, and a display unit that displays the amount of externally affected electricity.

  The power management system according to the present invention includes a measuring unit that measures the amount of electricity used in an indoor device, a first storage unit that stores a history of measurement results of the amount of electricity used, a staying situation of at least an indoor person, and a predetermined space A detection unit that detects the temperature of the stay, a second storage unit that stores the history of the stay status and the history of the temperature, and a comparison that detects each change in the stay status and the temperature in two different periods A first calculation unit that calculates the amount of change in the amount of electricity used by the device according to the amount of change in the stay status and the temperature as an external influence electric amount, and a display unit that displays the external influence electric amount It is characterized by providing.

  As described above, according to the present invention, there is an effect that it is possible to present the influence on the energy usage due to the external influence not related to the user's intention.

It is a block diagram which shows the structure of the power management system using the power management apparatus of Embodiment 1. FIG. It is a table figure which shows the example of a data structure of an electric power memory | storage part same as the above. It is a table figure which shows the example of a data structure of the event memory | storage part same as the above. (A)-(c) It is a flowchart figure which shows operation | movement same as the above. FIG. 10 is a table diagram illustrating an example data structure of an event storage unit according to the second embodiment. FIG. 10 is a table diagram illustrating an example of a data structure of an event storage unit according to the third embodiment. It is a block diagram which shows the structure of the power management apparatus of Embodiment 4. FIG. 10 is a table diagram illustrating an example data structure of an event storage unit according to the fifth embodiment. (A) (b) It is a figure which shows the coefficient used for a calculation same as the above. It is a table figure which shows the example of a data structure of the event memory | storage part of Embodiment 6. It is a block diagram which shows the structure of the power management apparatus of Embodiment 7. It is a table figure which shows the example of a data structure of an electric power memory | storage part same as the above. It is a flowchart figure which shows operation | movement same as the above. It is a figure which shows an example of the electric usage-amount data according to apparatus same as the above. It is a block diagram which shows the structure of the power management apparatus of Embodiment 8.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

(Embodiment 1)
FIG. 1 shows a configuration of a power management system using the power management apparatus of the present embodiment, and includes a power management apparatus 1, a power measurement unit 2, one or more devices 3, and one or more sensors 4. Composed.

  The device 3 includes an air conditioner such as an air conditioner, a television set, a lighting device, a music player, and the like, and is disposed in a building such as a detached house, a dwelling unit of a housing complex, a store, or an office. And the electric power measurement part 2 measures the electric consumption (usage electric energy) of each apparatus 3. FIG. Data on the amount of electricity used by each device 3 (electricity usage data) measured by the power measuring unit 2 is periodically transmitted to the power management apparatus 1 once a day. This electricity usage data is data on the amount of power used by each device 3 in one day. The power measuring unit 2 may have either a configuration in which a device for measuring the amount of electricity used is provided in the device 3 itself, or a configuration in which a measuring device such as CT is provided in the branch circuit for each device 3.

  The sensor 4 (measurement unit) periodically creates a sensor signal for determining the presence / absence of an indoor person, and transmits the sensor signal to the power management apparatus 1. The sensor 4 is configured using a human sensor or image processing means using a surveillance camera. That is, the sensor 4 has a function of detecting a staying situation of an indoor person.

  The power management apparatus 1 includes an acquisition unit 1a, a power storage unit 1b, an event detection unit 1c, an event storage unit 1d, a comparison unit 1e, a first calculation unit 1f, a second calculation unit 1g, and a display unit 1h.

  The acquisition unit 1a is configured to be communicable with the power measurement unit 2, and periodically acquires the electricity usage data of each device 3 from the power measurement unit 2 once a day. 3 is stored in the power storage unit 1b (first storage unit). The electricity usage data stored in the power storage unit 1b is composed of the table shown in FIG. 2, and stores the total daily electricity usage (total electricity usage) corresponding to the date.

  The event detection unit 1c (detection unit) is configured to be communicable with the sensor 4 and acquires sensor signals for determining the presence / absence of an indoor person at regular intervals. Based on the sensor signal, the event detection unit 1c (detection unit) Detects a person's stay time per day. The staying time of indoor people is an event that affects the amount of electricity used indoors (the amount of electricity used by air conditioners, TV sets, lighting equipment, music players, etc.) regardless of the user's intention. It is an external influence. This stay time is the time during which one or more people are staying indoors.

  The event storage unit 1d (second storage unit) stores data on the staying time per day (staying time data) of an indoor person detected by the event detection unit 1c. The staying time data stored in the event storage unit 1d is configured by the table shown in FIG. 3, and the staying time corresponding to the date is stored. “Stay time data” corresponds to “event data” in FIG.

  And the comparison part 1e operate | moves according to the flowchart shown to Fig.4 (a). First, the comparison unit 1e selects two periods to be compared (here, the first target day and the second target day after that), and the first and second targets in the event storage unit 1d. It is determined whether or not each stay time data (event data) of the day has been acquired (S1). The operation of step S1 is repeated until each stay time data is acquired for the first and second target days, and when each stay time data is acquired for the first and second target days, a change in the stay time is calculated (S2). ). The calculated stay time change data is output to the first calculation unit 1f (S3). For example, in the stay time data shown in FIG. 3, the change in stay time between March 26, 2010 and March 27, 2010 is 6 hours (= 16 hours-10 hours). Further, the change in stay time on March 27, 2010 and March 28, 2010 is -2 hours (= 14 hours-16 hours).

  Here, the staying time is an external influence on the amount of electricity used, and is an event that affects the amount of electricity used indoors regardless of the intention of the user. The amount varies. Hereinafter, the fluctuation of the total electricity usage due to the external influence is referred to as the external influence electricity usage.

  The first calculation unit 1f (first calculation unit) operates according to the flowchart shown in FIG. First, the first calculation unit 1f determines whether or not the change data of the stay time has been acquired from the comparison unit 1e (S11). The operation of step S11 is repeated until the stay time change data is acquired. When the stay time change data is acquired, the external influence electricity usage due to the stay time change is calculated. (S12). The first calculation unit 1f holds in advance correspondence data between the change in stay time and the external influence electricity usage, and applies the change in stay time calculated by the comparison unit 1e to this correspondence data. It functions as a conversion unit of the present invention by calculating the external influence electricity usage. For example, when the staying time increases by 1 hour, the external influence electric quantity increases by X (kWh), and when the staying time decreases by 1 hour, the external influence electric quantity decreases by X (kWh). This correspondence data is preset by actual measurement, simulation, or the like. The calculated external influence electricity usage data is output to the second calculator 1g and the display 1h (S13).

  Next, the 2nd calculation part 1g (2nd calculation part) operate | moves according to the flowchart shown in FIG.4 (c). First, the 2nd calculation part 1g determines whether each total electric usage data of the 1st, 2nd object day in the electric power memory | storage part 1b was acquired (S21). If the operation of step S21 is repeated until the total electricity usage data for the first and second target days is acquired, and the total electricity usage data for the first and second target days is acquired, the difference in the total electricity usage Is calculated (S22). For example, in the electricity usage data of FIG. 2, the difference between the total electricity usage on March 26, 2010 and March 27, 2010 is 2 kWh (= 12 kWh-10 kWh). Further, the difference between the total electricity consumption on March 27, 2010 and March 28, 2010 is -3 kWh (= 9 kWh-12 kWh).

  Then, the second calculation unit 1g determines whether or not external influence electricity usage data has been acquired from the first calculation unit 1f (S23). The operation of step S21 is repeated until data on the amount of externally used electricity is acquired. When acquiring the data on the external influence electricity usage amount, based on the difference between the total electricity usage amount calculated in Step S22 and the first and second target days and the external influence electricity usage amount obtained in Step S23, The amount of internally used electricity is calculated (S24). The internally-influenced electricity usage is the total electricity consumption that is considered to have been consumed by the user's direct action. Here, the externally-influenced electricity consumption is calculated from the difference between the total electricity usage on the first and second target days. It is the remaining electricity usage minus the usage. For example, the user's direct action is how the user's device 3 is used, and the internal influence electricity usage is the total electricity usage increased or decreased depending on how the user's device 3 is used.

  The calculated internal influence electricity usage data is output to the display unit 1h (S25).

  The display unit 1h displays the external influence electricity usage acquired from the first calculation unit 1f and the internal influence electricity usage acquired from the second calculation unit 1g on a display screen such as an LCD. Therefore, the user is presented with the external influence electric usage amount by the external influence not related to the user's intention among the differences of the total electric usage amounts on the first and second target days by the display unit 1h. The impact on energy usage due to the impact can be grasped. In addition, the user is presented with the internal influence electricity usage amount that is considered to have been consumed by the user's direct action, and can grasp the influence on the energy usage amount due to the internal influence.

  In this way, items that appear to be factors of increase / decrease in the total amount of electricity used are presented to the user as externally influenced electricity usage and internally influenced electricity usage. That is, the user is presented separately with the total electricity usage due to external influences not related to the user's intention and the total electricity usage due to internal influences that are considered to have been consumed by the user's direct action. Therefore, it is possible to grasp the degree of each of the external influence and the internal influence with respect to the increase / decrease in the total electricity usage.

  For example, although the user is making an effort to save energy, the total amount of electricity used is thought to be due to external influences not related to the user's intention (due to the long stay time in this embodiment). May not decrease as much. However, in this embodiment, the user can grasp that the total electricity usage amount has increased due to the long staying time, and the user can maintain motivation to continue efforts for energy saving.

  Moreover, since the internal influence electricity usage amount by internal influences, such as usage of the apparatus 3 by a user, is also shown, the user's own action contributing to energy saving is clearly shown, and an effective energy saving action is presented. .

  In the present embodiment, two periods to be compared are set in units of one day. However, the two periods to be compared may be set to one month unit, one year unit, or any period unit, and the above analysis processing is performed based on the difference between the total electricity usage amounts of the two set periods. You may go.

  Also, when calculating the difference in total electricity usage, for example, when two periods to be compared are set in units of one day, a configuration for obtaining the difference from the accumulated value of the daily electricity usage, There is a configuration in which a difference is obtained from an average value of the daily usage amount. Therefore, it is only necessary to obtain the difference between the total electricity usage using a configuration suitable for the setting mode of the two periods to be compared.

  In addition, when the first and second target days are used as the two periods to be compared, the first target day is the previous day, the same day of the previous year, the average value for the same day of the previous year, and the daily value of the previous year. It is set to an average value, an average value in units of one day from a certain day to the current day, etc., and is not limited to the setting method.

  In addition, the event detection unit 1c detects an external influence that is an event that affects indoor electricity usage regardless of the user's intention, and in this embodiment, the indoor person's stay time per day is determined. Detected. However, external effects include outdoor temperature, outdoor humidity, indoor temperature, indoor humidity, sound, wind speed, illuminance, and the like. Therefore, by adding a temperature sensor, humidity sensor, microphone, anemometer, illuminance sensor, camera, etc. to the sensor 4, other external influences such as outdoor temperature, outdoor humidity, indoor temperature, indoor humidity, sound, wind speed, illuminance, etc. May be used in conjunction with the staying time.

(Embodiment 2)
The power management system using the power management apparatus of the present embodiment has the configuration shown in FIG. 1 as in the first embodiment, and the same components are denoted by the same reference numerals and description thereof is omitted.

  First, the sensor 4 is composed of an air temperature sensor that detects an outdoor air temperature (outside air temperature), periodically creates a sensor signal that is a measurement result of the outside air temperature, and transmits the sensor signal to the power management apparatus 1.

  The event detection unit 1c of the power management apparatus 1 acquires sensor signals that are measurement results of the outside air temperature at regular intervals, and detects an average value of the outside air temperature per day based on the sensor signal. The average value of the outside air temperature is an event that affects the amount of electricity used indoors (especially the amount of electricity used by the air conditioner) regardless of the user's intention, and is an external influence on the amount of electricity used.

  The event storage unit 1d stores data on the average value of the outside air temperature (outside air temperature data) detected by the event detection unit 1c. The outside air temperature data stored in the event storage unit 1d is composed of the table shown in FIG. 5, and stores the average value of the outside air temperature corresponding to the date. “Outside air temperature data” corresponds to “event data” in FIG.

  And the comparison part 1e operate | moves according to the flowchart shown to Fig.4 (a). First, the comparison unit 1e selects two periods to be compared (here, the first target day and the second target day after that), and the first and second targets in the event storage unit 1d. It is determined whether or not each day outside temperature data (event data) has been acquired (S1). The operation in step S1 is repeated until the outside air temperature data for the first and second target days are acquired. When the outside air temperature data for the first and second target days are obtained, the change in the outside air temperature is calculated (S2). ). The calculated change data of the outside air temperature is output to the first calculator 1f (S3). For example, in the outside air temperature data of FIG. 5, the change in the outside air temperature between March 26, 2010 and March 27, 2010 is 2.7 ° C. (= 16 ° C.−13.3 ° C.). The change in the outside air temperature between March 27, 2010 and March 28, 2010 is −3.5 ° C. (= 12.5 ° C.−16 ° C.).

  Here, the outside air temperature is an external influence on the amount of electricity used, and is an event that affects the amount of electricity used indoors regardless of the intention of the user. The amount used varies. Hereinafter, the fluctuation of the total electricity usage due to the external influence is referred to as the external influence electricity usage.

  The first calculator 1f operates according to the flowchart shown in FIG. First, the first calculation unit 1f determines whether or not change data of the outside air temperature has been acquired from the comparison unit 1e (S11). When the operation of step S11 is repeated until the change data of the outside air temperature is acquired, and the change data of the outside air temperature is acquired, the external influence electricity usage due to the change of the outside air temperature is calculated. (S12). The first calculation unit 1f holds in advance correspondence data between the amount of change in the outside air temperature and the external influence electricity usage, and applies the amount of change in the outside temperature calculated by the comparison unit 1e to the correspondence data, It functions as a conversion unit of the present invention by calculating the external influence electricity usage. For example, in the cooling operation of an air conditioner, when the outside air temperature increases by 1 ° C., the external influence electric quantity increases by X (kWh), and when the outside air temperature decreases by 1 ° C., the external influence electric quantity decreases by X (kWh). . This correspondence data is preset by actual measurement, simulation, or the like. The calculated external influence electricity usage data is output to the second calculator 1g and the display 1h (S13).

  Next, the 2nd calculation part 1g operate | moves according to the flowchart shown in FIG.4 (c). First, the 2nd calculation part 1g determines whether each total electric usage data of the 1st, 2nd object day in the electric power memory | storage part 1b was acquired (S21). If the operation of step S21 is repeated until the total electricity usage data for the first and second target days is acquired, and the total electricity usage data for the first and second target days is acquired, the difference in the total electricity usage Is calculated (S22). For example, in the electricity usage data of FIG. 2, the difference between the total electricity usage on March 26, 2010 and March 27, 2010 is 2 kWh (= 12 kWh-10 kWh). Further, the difference between the total electricity consumption on March 27, 2010 and March 28, 2010 is -3 kWh (= 9 kWh-12 kWh).

  Then, the second calculation unit 1g determines whether or not external influence electricity usage data has been acquired from the first calculation unit 1f (S23). The operation of step S21 is repeated until data on the amount of externally used electricity is acquired. When acquiring the data on the external influence electricity usage amount, based on the difference between the total electricity usage amount calculated in Step S22 and the first and second target days and the external influence electricity usage amount obtained in Step S23, The amount of internally used electricity is calculated (S24). The internally-influenced electricity usage is the total electricity consumption that is considered to have been consumed by the user's direct action. Here, the externally-influenced electricity consumption is calculated from the difference between the total electricity usage on the first and second target days. It is the remaining electricity usage minus the usage. For example, the user's direct action is how the user's device 3 is used, and the internal influence electricity usage is the total electricity usage increased or decreased depending on how the user's device 3 is used.

  The calculated internal influence electricity usage data is output to the display unit 1h (S25).

  The display unit 1h displays the external influence electricity usage acquired from the first calculation unit 1f and the internal influence electricity usage acquired from the second calculation unit 1g on a display screen such as an LCD. Therefore, the user is presented with the external influence electric usage amount by the external influence not related to the user's intention among the differences of the total electric usage amounts on the first and second target days by the display unit 1h. The impact on energy usage due to the impact can be grasped. In addition, the user is presented with the internal influence electricity usage amount that is considered to have been consumed by the user's direct action, and can grasp the influence on the energy usage amount due to the internal influence.

  In this way, items that appear to be factors of increase / decrease in the total amount of electricity used are presented to the user as externally influenced electricity usage and internally influenced electricity usage. That is, the user is presented separately with the total electricity usage due to external influences not related to the user's intention and the total electricity usage due to internal influences that are considered to have been consumed by the user's direct action. Therefore, it is possible to grasp the degree of each of the external influence and the internal influence with respect to the increase / decrease in the total electricity usage.

  For example, although the user is making efforts to save energy, the total amount of electricity used is thought to be due to external influences that are not related to the user's intention (because the outside temperature is high in this embodiment). May not decrease as much. However, in the present embodiment, the user can grasp that the total electricity consumption has increased due to the high outside air temperature, and the user can maintain motivation to continue efforts for energy saving.

  Moreover, since the internal influence electricity usage amount by internal influences, such as usage of the apparatus 3 by a user, is also shown, the user's own action contributing to energy saving is clearly shown, and an effective energy saving action is presented. .

  In the present embodiment, two periods to be compared are set in units of one day. However, the two periods to be compared may be set to one month unit, one year unit, or any period unit, and the above analysis processing is performed based on the difference between the total electricity usage amounts of the two set periods. You may go.

  Also, when calculating the difference in total electricity usage, for example, when two periods to be compared are set in units of one day, a configuration for obtaining the difference from the accumulated value of the daily electricity usage, There is a configuration in which a difference is obtained from an average value of the daily usage amount. Therefore, it is only necessary to obtain the difference between the total electricity usage using a configuration suitable for the setting mode of the two periods to be compared.

  In addition, when the first and second target days are used as the two periods to be compared, the first target day is the previous day, the same day of the previous year, the average value for the same day of the previous year, and the daily value of the previous year. It is set to an average value, an average value in units of one day from a certain day to the current day, etc., and is not limited to the setting method.

  In addition, the event detection unit 1c detects an external influence that is an event that affects indoor electricity usage regardless of the user's intention. In this embodiment, the event detection unit 1c detects an average value of the outside air temperature per day. is doing. However, external influences include outdoor humidity, indoor temperature, indoor humidity, sound, wind speed, illuminance, staying time, and the like. Therefore, a humidity sensor, a microphone, an anemometer, an illuminance sensor, a camera, a human sensor, etc. are added to the sensor 4, and other external factors such as outdoor humidity, indoor temperature, indoor humidity, sound, wind speed, illuminance, stay time, etc. The effect may be used in conjunction with the outside temperature.

(Embodiment 3)
The power management system using the power management apparatus of this embodiment has the configuration shown in FIG. 1 as in the first and second embodiments, and the same components are denoted by the same reference numerals and description thereof is omitted.

  First, the sensor 4 includes a human sensor that detects an indoor person and an air temperature sensor that detects an outdoor air temperature (outside air temperature). The human sensor periodically creates a sensor signal for determining the presence / absence of an indoor person and transmits the sensor signal to the power management apparatus 1. The air temperature sensor outputs a sensor signal that is a measurement result of the outside air temperature. The sensor signal is periodically created and transmitted to the power management apparatus 1.

  The event detection unit 1c of the power management apparatus 1 acquires sensor signals for determining the presence / absence of an indoor person at regular intervals, and detects the staying time of an indoor person per day based on the sensor signal. Furthermore, the event detection unit 1c acquires sensor signals that are measurement results of the outside air temperature at regular intervals, and detects the average value of the outside air temperature per day based on the sensor signal. The average value of the staying time and the outside temperature of the indoor person is an event that affects the amount of electricity used indoors regardless of the intention of the user, and is an external influence on the amount of electricity used. The outside temperature particularly affects the amount of electricity used by the air conditioner.

  The event storage unit 1d stores data on the staying time per day (staying time data) of an indoor person detected by the event detection unit 1c, and data on the average value of the outside temperature (outside temperature data). The stay time data and the outside air temperature data stored in the event storage unit 1d are composed of the table shown in FIG. 6 and store the stay time and the average value of the outside air temperature corresponding to the date. “Stay time data” and “outside air temperature data” correspond to “event data” in FIG.

  And the comparison part 1e, the 1st calculation part 1f, and the 2nd calculation part 1g operate | move according to each flowchart shown to Fig.4 (a) (b) (c). In the present embodiment, the comparison unit 1e calculates the stay time change data and the outside air temperature change data, and outputs them to the first calculation unit 1f. And the 1st calculation part 1f hold | maintains beforehand the correspondence data of the change part of stay time and the change part of external temperature, and external influence electric consumption, The change part of the stay time which the comparison part 1e calculated, and The change in outside air temperature is applied to the corresponding data to calculate the externally used electricity usage. That is, the 1st calculation part 1f functions as a conversion part of this invention. The data of the external influence electricity usage calculated by the first calculation unit 1f is output to the second calculation unit 1g and the display unit 1h. And the 2nd calculation part 1g calculates an internal influence electricity usage-amount based on the difference of the total electricity usage on the 1st, 2nd object day, and an external influence electricity usage-amount, and displays to the display part 1h Output. Note that the detailed description of the operation according to the flowcharts of FIGS.

  The display unit 1h displays the external influence electricity usage acquired from the first calculation unit 1f and the internal influence electricity usage acquired from the second calculation unit 1g on a display screen such as an LCD. Therefore, the user is presented with the external influence electric usage amount by the external influence not related to the user's intention among the differences of the total electric usage amounts on the first and second target days by the display unit 1h. The impact on energy usage due to the impact can be grasped. In addition, the user is presented with the internal influence electricity usage amount that is considered to have been consumed by the user's direct action, and can grasp the influence on the energy usage amount due to the internal influence.

  In this way, items that appear to be factors of increase / decrease in the total amount of electricity used are presented to the user as externally influenced electricity usage and internally influenced electricity usage. That is, the user is presented separately with the total electricity usage due to external influences not related to the user's intention and the total electricity usage due to internal influences that are considered to have been consumed by the user's direct action. Therefore, it is possible to grasp the degree of each of the external influence and the internal influence with respect to the increase / decrease in the total electricity usage.

  For example, despite the user's efforts for energy saving, due to external influences not related to the user's intention (in this embodiment, due to the long stay time or the high outside temperature) ), The total electricity consumption may not decrease as expected. However, in this embodiment, the user can grasp that the total electricity consumption has increased due to the long staying time or the high outside air temperature, and the user is motivated to continue efforts for energy saving. Can be maintained.

  Moreover, since the internal influence electricity usage amount by internal influences, such as usage of the apparatus 3 by a user, is also shown, the user's own action contributing to energy saving is clearly shown, and an effective energy saving action is presented. .

  In the present embodiment, two periods to be compared are set in units of one day. However, the two periods to be compared may be set to one month unit, one year unit, or any period unit, and the above analysis processing is performed based on the difference between the total electricity usage amounts of the two set periods. You may go.

  Also, when calculating the difference in total electricity usage, for example, when two periods to be compared are set in units of one day, a configuration for obtaining the difference from the accumulated value of the daily electricity usage, There is a configuration in which a difference is obtained from an average value of the daily usage amount. Therefore, it is only necessary to obtain the difference between the total electricity usage using a configuration suitable for the setting mode of the two periods to be compared.

  In addition, when the first and second target days are used as the two periods to be compared, the first target day is the previous day, the same day of the previous year, the average value for the same day of the previous year, and the daily value of the previous year. It is set to an average value, an average value in units of one day from a certain day to the current day, etc., and is not limited to the setting method.

  In addition, the event detection unit 1c detects an external influence that is an event that affects the amount of electricity used indoors regardless of the user's intention. And the average value of the outside air temperature per day is detected. However, external influences include outdoor humidity, indoor temperature, indoor humidity, sound, wind speed, illuminance, and the like. Therefore, a humidity sensor, a microphone, an anemometer, an illuminance sensor, etc. are added to the sensor 4, and other external influences such as outdoor humidity, indoor temperature, indoor humidity, sound, wind speed, illuminance, etc. You may use together.

(Embodiment 4)
The power management apparatus 1 according to the present embodiment has the configuration shown in FIG. 7, and the same reference numerals are given to the same configurations as those in any one of the first to third embodiments, and description thereof will be omitted.

  First, the power management apparatus 1 includes a third calculation unit 1i (third calculation unit), and the third calculation unit 1i uses the total electricity usage on the first and second target days in the power storage unit 1b. Get quantity data. And the 3rd calculation part 1i calculates the difference of the total electricity usage on the 1st, 2nd object day, and outputs it to the display part 1h.

  The display unit 1h displays the difference between the external influence electricity usage acquired from the first calculation unit 1f and the total electricity usage acquired from the third calculation unit 1i on a display screen such as an LCD. Therefore, the user is presented with the difference between the total electricity usage amounts on the first and second target days on the display unit 1h, and is further presented with the external influence electricity usage amount. By comparing the presented information, the user can determine the amount of external influence electric usage due to external influences that are not related to the user's intention among the differences in total electric usage on the first and second target days. You can grasp the ratio.

  Further, the second calculation unit 1g of the first to third embodiments may be added to the configuration of FIG. 7, and the internal influence electricity usage calculated by the second calculation unit 1g may also be displayed on the display unit 1h.

(Embodiment 5)
In the present embodiment, as an external influence that affects the amount of electricity used indoors regardless of the user's intention, as in the third embodiment, the staying condition of the indoor person and the outside air temperature are considered. When the staying time data and the outside air temperature data are used, the external influence electricity usage is calculated by multiplying the staying time and the outside air temperature by different coefficients.

  First, it is assumed that the stay time data and the outside air temperature data stored in the event storage unit 1d are composed of the table shown in FIG. Then, the first calculation unit 1f multiplies each of the change in the stay time and the change in the outside air temperature calculated by the comparison unit 1e by a different coefficient to calculate the external influence electricity usage.

  FIG. 9A shows a coefficient Ka for multiplying the change in stay time. The coefficient Ka = 1 when the change in stay time is less than Y1, the coefficient Ka = 0 when the change in stay time is Y1 or more and Y2 or less, and the coefficient Ka when the change in stay time exceeds Y2. = 1 is set. Note that Y1 <0 <Y2.

  FIG. 9B shows a coefficient Kb by which the change in the outside air temperature is multiplied. When the outside air temperature change is less than Y11, the coefficient Kb = 5, when the outside air temperature change is Y11 or more and Y12 or less, the coefficient Kb = 0, and when the outside air temperature change exceeds Y12, the coefficient Kb = 5. Note that Y11 <0 <Y12.

  The first calculation unit 1f multiplies each change by coefficients Ka and Kb. In FIGS. 9A and 9B, when the absolute values of the changes in the stay time and the outside air temperature are small, the coefficients Ka and Kb are set to “0”, and these changes are ignored. When the absolute value of each change in stay time and outside air temperature is large, the coefficients Ka and Kb are set to “1” and “5”, and these changes are validated.

  Furthermore, since the change in the outside temperature has a greater effect on the electricity usage than the change in the stay time, the coefficient Ka = 1 when the change in the stay time is valid, and the coefficient when the change in the outside temperature is valid Kb = 5 is set. Therefore, the outside air temperature is larger than the staying time at the rate of affecting the external influence electricity consumption.

  And the 1st calculation part 1f has previously hold | maintained the correspondence data with the change part of stay time, the change part of external temperature, and external influence electric consumption. Then, the change in the stay time and the change in the outside temperature calculated by the comparison unit 1e are applied to the correspondence data, and the external influence electricity usage corresponding to the change in the stay time and the change in the outside temperature The corresponding externally used electricity consumption is calculated individually.

  In this correspondence data, for example, the change in stay time “1 hour” and the change in outside air temperature “1 ° C.” correspond to the same amount of external influence electricity usage. For example, in the cooling operation of the air conditioner, the amount of externally influenced electricity increases by the same X (kWh) when the stay time increases by 1 hour and when the outside air temperature increases by 1 ° C. In addition, the external influence electric quantity is set to the same X (kWh) decrease characteristic when the stay time is reduced by 1 hour and when the outside air temperature is lowered by 1 ° C.

  When such correspondence data is combined with the multiplication processing of the coefficients Ka and Kb, the actual change “1 ° C.” of the outside air temperature corresponds to the actual change “5 hours” of the staying time. Accordingly, the change in stay time and the change in outside air temperature calculated by the comparison unit 1e are applied to the corresponding data, and the external influence electricity usage is calculated. The proportion that affects the electricity consumption is considered.

  In addition, the external influence electricity usage based on the stay time and the external influence electricity usage based on the outside temperature are added after being calculated separately, which improves the accuracy of the calculation result of the external influence electricity usage. .

  The coefficients Ka and Kb may be represented by polynomials with the stay time and the outside air temperature as variables, or may be represented by equations using logarithmic expressions and exponential function expressions.

(Embodiment 6)
In the present embodiment, as an external influence that affects the amount of electricity used indoors regardless of the user's intention, as in the third embodiment, both the staying situation of the indoor person and the outside air temperature are considered. However, it differs from the third embodiment in that the staying status of the indoor person is used together with the staying time data and the staying number of staying persons (staying person number data).

  The sensor 4 that detects the staying situation of the indoor person creates a sensor signal that can distinguish not only the presence / absence of the indoor person but also the number of staying persons, and transmits the sensor signal to the power management apparatus 1. The sensor 4 that can discriminate the number of visitors is configured using image processing means using a surveillance camera, entrance / exit management means using an infrared sensor, a laser sensor, an ID tag reader, and the like.

  The sensor 4 of the present embodiment uses an air temperature sensor that detects the outside air temperature in addition to the sensor that can determine the number of visitors, and the air temperature sensor periodically creates a sensor signal that is a measurement result of the outside air temperature. Then, the sensor signal is transmitted to the power management apparatus 1.

  And the event detection part 1c of the power management apparatus 1 acquires the sensor signal from the sensor 4, detects the staying number of people indoors and the staying time in this staying number based on this sensor signal, and the staying number of people. The result of multiplying (person) and staying time (time) [number of staying persons × staying time] is derived. Furthermore, the sensor signal which is the measurement result of the outside air temperature is acquired at regular intervals, and the average value of the outside air temperature per day is detected based on the sensor signal. This [number of people staying x staying time] and the average value of the outside temperature affect the amount of indoor electricity used (the amount of electricity used by air conditioners, televisions, lighting equipment, music players, etc.) regardless of the user's intention. Event and external impact on electricity usage.

  The event storage unit 1d stores [number of staying persons × staying time] data derived by the event detection unit 1c, and data on the average value of the outside air temperature (outside air temperature data). The [number of staying persons × staying time] data and the outside air temperature data stored in the event storage unit 1d are composed of the table shown in FIG. 10, and the staying time corresponding to the date, the number of staying persons, and [the number of staying persons × staying time] The average value of the outside air temperature is stored. Note that “[number of visitors × staying time] data” and “outside temperature data” correspond to “event data” in FIG. 4.

  When the number of staying people varies in one day, the staying time is calculated for each staying person, and the sum of [staying person × staying time] for each staying person is calculated as [staying person × staying time] for one day. Data.

  And the comparison part 1e, the 1st calculation part 1f, and the 2nd calculation part 1g operate | move according to each flowchart shown to Fig.4 (a) (b) (c). In the present embodiment, the comparison unit 1e calculates change data of [number of visitors × stay time] and change data of the outside air temperature, and outputs the calculated data to the first calculation unit 1f. The first calculation unit 1f holds in advance correspondence data between changes in [number of visitors × staying time] and changes in outside air temperature, and external influence electricity usage. And the 1st calculation part 1f calculates the amount of external influence electricity usage by applying the change of [the number of visitors x staying time] and the change of outside temperature which were calculated by the comparison part 1e to this corresponding data. Thus, it functions as a conversion unit of the present invention. The calculated external influence electricity usage data is output to the second calculator 1g and the display 1h. And the 2nd calculation part 1g calculates an internal influence electricity usage-amount based on the difference of the total electricity usage on the 1st, 2nd object day, and an external influence electricity usage-amount, and displays to the display part 1h Output. Note that a detailed description of the operation according to the flowcharts of FIGS. 4A, 4B, and 4C is substantially the same as that of the first to third embodiments, and will be omitted.

  The display unit 1h displays the external influence electricity usage acquired from the first calculation unit 1f and the internal influence electricity usage acquired from the second calculation unit 1g on a display screen such as an LCD. Therefore, the user is presented with the external influence electric usage amount by the external influence not related to the user's intention among the differences of the total electric usage amounts on the first and second target days by the display unit 1h. The impact on energy usage due to the impact can be grasped. In addition, the user is presented with the internal influence electricity usage amount that is considered to have been consumed by the user's direct action, and can grasp the influence on the energy usage amount due to the internal influence.

  Furthermore, by using the staying number data together with the staying time data as the staying state of the indoor person, the external influence electricity usage amount due to the staying state of the indoor person can be calculated in more detail.

  Also, the external influence electricity usage based on [number of visitors x staying time] and the external influence electricity usage based on outside temperature are calculated separately and then added to calculate the external influence electricity usage. The accuracy of the result is further improved.

(Embodiment 7)
The power management apparatus 1 according to the present embodiment illustrated in FIG. 11 includes a fourth calculation unit 1j (fourth calculation unit), and the same components as those in the first to sixth embodiments are denoted by the same reference numerals and described. Is omitted.

  First, the acquisition unit 1a of the power management apparatus 1 is configured to be able to communicate with the power measurement unit 2, and periodically acquires the electricity usage data of each device 3 from the power measurement unit 2 once a day. Then, the individual amount of electricity used for each device 3 is stored in the power storage unit 1b. The electricity usage data includes information on the name of the device 3 (device name) and the name of the room in which the device 3 is placed. The electricity usage amount data stored in the power storage unit 1b is composed of the table shown in FIG. 12, and includes the daily electricity usage amount (electricity usage amount for each device) of each device 3 corresponding to the year, month, and day, and each room. The total daily electricity usage (electrical usage by room) of the device 3 is stored together with the room name and the device name.

  The comparison unit 1e, the first calculation unit 1f, and the second calculation unit 1g operate according to the flowcharts shown in FIGS. 4A, 4B, and 4C. The first calculation unit 1f Calculate usage. The calculated external influence electricity usage data is output to the second calculator 1g and the display 1h. And the 2nd calculation part 1g calculates an internal influence electricity usage-amount based on the difference of the total electricity usage on the 1st, 2nd object day, and an external influence electricity usage-amount, and displays to the display part 1h Output. Note that a detailed description of the operation according to the flowcharts of FIGS. 4A, 4B, and 4C is substantially the same as that of the first to third embodiments, and will be omitted.

  Next, the fourth calculation unit 1j operates according to the flowchart shown in FIG. First, the fourth calculation unit 1j determines whether or not all of the device-specific electricity usage data on the first and second target dates in the power storage unit 1b have been acquired (S31). The fourth calculation unit 1j repeats the operation of step S31 until all of the device-specific electricity usage data on the first and second target days are acquired. The fourth calculation unit 1j acquires all of the device-specific electricity usage data on the first and second target days, and then acquires the external influence electricity usage data from the first calculation unit 1f (S32). . The fourth calculation unit 1j repeats the operation of step S32 until the data on the amount of externally used electricity is acquired. The fourth calculation unit 1j obtains the data on the externally influenced electricity usage amount, and then calculates the internal influence electricity usage amount for each device 3 (S33).

Each process in steps S31 to S33 will be specifically described. First, suppose that the 4th calculation part 1j acquired the electric usage-amount data according to apparatus shown in FIG. 14 in step S31. When the external influence electricity usage amount acquired from the first calculation unit 1f in step S32 is L, the internal influence electricity usage amount Wa of the air conditioner (living room) calculated in step S33, the internal influence of the television (living room) The influence electricity consumption Wb is as follows. Here, on the first and second target days, the electricity usage by device of the air conditioner (living) is Wa1 and Wa2, and the electricity usage by device of the television (living) is Wb1 and Wb2 (see FIG. 14). ).
Wa = Wa2- [Wa1 + {Wa1 / (Wa1 + Wb1) × L}]
Wb = Wb2- [Wb1 + {Wb1 / (Wa1 + Wb1) × L}]
It is assumed that the externally affected electricity usage L affects each of the devices 3 according to the ratio [Wa1 / (Wal + Wb1) or Wa2 / (Wal + Wb1)] of the power usage by device. And the internal influence electricity usage for every apparatus 3 multiplied the ratio of the external influence electricity usage L to the ratio of the electricity usage by equipment from the difference of the electricity usage for each equipment on the first and second target days. By subtracting the value, it is calculated as described above. Alternatively, when calculating the internal influence electricity usage for each device 3, the external influence electricity usage L is equally divided by the number of devices 3 from the difference between the electricity usage amounts for each device on the first and second target days. The result may be subtracted. Or you may allocate the external influence electricity usage-amount for every apparatus 3 only to the specific apparatus 3. FIG.

  Next, the fourth calculator 1j determines for each device 3 whether or not the internal influence electricity usage (Wa, Wb) for each device exceeds a predetermined threshold value Wt (S34). Then, if there is a device 3 whose internal influence electricity usage amount exceeds the threshold value Wt for each device, the device 3 is ranked in descending order of the excess amount where the internal influence electricity usage amount exceeds the threshold value Wt. Then, information (device name, room name, excess order, etc.) regarding the device 3 whose internal influence electricity usage exceeds the threshold value Wt is output to the display unit 1h (S35).

  The display unit 1h displays the external influence electricity usage acquired from the first calculation unit 1f and the internal influence electricity usage acquired from the second calculation unit 1g on a display screen such as an LCD. Furthermore, the display unit 1h also displays information (device name, room name, excess rank, etc.) on the device 3 that has been obtained from the fourth calculation unit 1j and whose internal influence electricity usage exceeds the threshold value Wt on the display screen. .

  Therefore, since the user can specify the device 3 that has a large proportion of the internally-influenced electricity usage, the target device for the energy-saving action can be more efficiently alerted to the user, and the effective energy-saving action by the user can be promoted. .

(Embodiment 8)
The power management apparatus 1 of the present embodiment shown in FIG. 15 includes a fifth calculation unit 1k (fifth calculation unit), and the same components as those in the first to sixth embodiments are denoted by the same reference numerals and described. Is omitted.

  First, the acquisition unit 1a of the power management apparatus 1 is configured to be able to communicate with the power measurement unit 2, and periodically acquires the electricity usage data of each device 3 from the power measurement unit 2 once a day. Then, the individual amount of electricity used for each device 3 is stored in the power storage unit 1b. The electricity usage data includes information on the name of the device 3 (device name) and the name of the room in which the device 3 is placed. The electricity usage amount data stored in the power storage unit 1b is composed of the table shown in FIG. 12, and includes the daily electricity usage amount (electricity usage amount for each device) of each device 3 corresponding to the year, month, and day, and each room. The total daily electricity usage (electrical usage by room) of the device 3 is stored together with the room name and the device name.

  The comparison unit 1e, the first calculation unit 1f, and the second calculation unit 1g operate according to the flowcharts shown in FIGS. 4A, 4B, and 4C. The first calculation unit 1f Calculate usage. The calculated external influence electricity usage data is output to the second calculator 1g and the display 1h. And the 2nd calculation part 1g calculates an internal influence electricity usage-amount based on the difference of the total electricity usage on the 1st, 2nd object day, and an external influence electricity usage-amount, and displays to the display part 1h Output. Note that a detailed description of the operation according to the flowcharts of FIGS. 4A, 4B, and 4C is substantially the same as that of the first to third embodiments, and will be omitted.

  Next, the 5th calculation part 1k calculates the variation | change_quantity of the electric usage-amount according to apparatus in the 1st, 2nd object day for every apparatus 3. FIG. And a priority is provided to each apparatus 3 in order with a large increase in the electric usage-amount according to apparatus in the 1st, 2nd object day. Here, when the fluctuations in the amount of externally affected electricity of each device 3 tend to be substantially the same (for example, external effects that have a similar effect on the same type of device 3 or all the devices 3), each device The priority given to No. 3 corresponds to a rank having a large internal influence electric quantity. And the 5th calculation part 1k outputs the information of the predetermined number of apparatus 3 (high-order apparatus 3 with much ratio which occupies for internal influence electricity usage amount) with this high priority to the display part 1h. That is, the fifth calculator 1k specifies the device 3 having a large internal influence electric quantity.

  The display unit 1h displays the external influence electricity usage acquired from the first calculation unit 1f and the internal influence electricity usage acquired from the second calculation unit 1g on a display screen such as an LCD. Furthermore, the display unit 1h also displays information on the device 3 acquired from the fifth calculation unit 1k (information on the device 3 having a large proportion of the internal influence electricity usage amount) on the display screen.

  Therefore, since the user can specify the device 3 that has a large proportion of the internally-influenced electricity usage, the target device for the energy-saving action can be more efficiently alerted to the user, and the effective energy-saving action by the user can be promoted. . In addition, the fifth calculation unit 1k performs a simple process of calculating the amount of change in the amount of electricity used by each device on the first and second target days, so that the device 3 that has a large proportion of the internally-influenced electricity use amount. Can be specified. That is, it is not necessary to calculate the amount of electricity used internally for each device.

  Moreover, in each said embodiment, each part which comprises the power management apparatus 1 may be provided in the other terminal connected via the wired network or the wireless network, and a power management system may be comprised. In this case, each unit exchanges information by performing communication via the network.

DESCRIPTION OF SYMBOLS 1 Power management apparatus 1a Acquisition part 1b Power storage part (1st memory | storage part)
1c Event detector (detector)
1d Event storage unit (second storage unit)
1e Comparison unit 1f First calculation unit (first calculation unit)
1g 2nd calculation part (2nd calculation part)
1h Display unit 2 Power measurement unit 3 Device 4 Sensor

Claims (12)

An acquisition unit that acquires the amount of electricity used by indoor equipment;
A first storage unit for storing the acquired history of electricity usage;
A detection unit for detecting a staying situation of at least an indoor person,
A second storage unit for storing a history of the stay situation;
A comparison unit for detecting a change in the stay status in each of two different periods;
A first calculator that calculates a change in the amount of electricity used by the device due to a change in the stay status as an externally affected amount of electricity;
A power management apparatus comprising: a display unit that displays the externally affected electric quantity. An acquisition unit that acquires the amount of electricity used by indoor equipment;
A first storage unit for storing the acquired history of electricity usage;
A detection unit for detecting the temperature of at least the predetermined space;
A second storage unit for storing the temperature history;
A comparison unit for detecting a change in the air temperature in each of two different periods;
A first calculation unit that calculates the amount of change in the amount of electricity used by the device due to the change in temperature as an external influence amount of electricity;
A power management apparatus comprising: a display unit that displays the externally affected electric quantity. An acquisition unit that acquires the amount of electricity used by indoor equipment;
A first storage unit for storing the acquired history of electricity usage;
A detection unit for detecting at least the staying situation of indoor people and the temperature of the predetermined space;
A second storage unit for storing the stay status history and the temperature history;
A comparison unit for detecting the stay situation and each change in the temperature in two different periods;
A first calculator that calculates the amount of change in the amount of electricity used by the device according to the amount of change in the stay status and the temperature as an externally affected amount of electricity;
A power management apparatus comprising: a display unit that displays the externally affected electric quantity.   The power management apparatus according to claim 1, wherein the stay status is represented by a value obtained by multiplying a stay time of a person existing indoors and a number of people present indoors in the period.   The first calculation unit is configured to change the stay status in two different periods, change the temperature in two different periods, or the stay status and the temperature in two different periods. 4. The power management apparatus according to claim 1, further comprising a conversion unit that converts each change amount into the amount of externally affected electricity. 5.   A second calculation unit configured to calculate a difference between an amount of change in the amount of electricity used by the device and the externally affected electricity amount in each of the two periods as an internally affected electricity amount, and the display unit includes the externally applied amount 6. The power management apparatus according to claim 1, wherein an influence electric quantity and the internal influence electric quantity are displayed.   A third calculation unit configured to calculate the amount of change in the amount of electricity used by the device in each of the two periods; and the display unit displays the amount of externally affected electricity and the amount of change in the amount of electricity used by the device. The power management device according to claim 1, wherein the power management device is a power management device. The acquisition unit acquires the amount of electricity used by each of a plurality of devices,
The first storage unit stores a history of the amount of electricity used for each device,
The difference between the amount of change in the amount of electricity used by each of the plurality of devices and the amount of externally influenced electricity of each of the plurality of devices in each of the two periods is determined as the internal influence electricity of each of the plurality of devices. 8. The fourth calculation unit according to claim 1, further comprising: a fourth calculation unit that calculates the amount and determines the device that is determined to have a large internal influence electric quantity based on a predetermined determination criterion. Power management device. The acquisition unit acquires the amount of electricity used by each of a plurality of devices,
The first storage unit stores a history of the amount of electricity used for each device,
A change amount of the electricity usage amount of each of the plurality of devices in each of the two periods is calculated, and based on the calculated change amount of the electricity usage amount for each device, it is determined that the internal influence electricity amount is large. The power management apparatus according to claim 1, further comprising a fifth calculation unit that identifies the device to be operated. A measurement unit that measures the amount of electricity used in indoor equipment,
A first storage unit for storing a history of measurement results of electricity consumption;
A detection unit for detecting a staying situation of at least an indoor person,
A second storage unit for storing a history of the stay situation;
A comparison unit for detecting a change in the stay status in each of two different periods;
A first calculator that calculates a change in the amount of electricity used by the device due to a change in the stay status as an externally affected amount of electricity;
A power management system, comprising: a display unit that displays the externally affected electric quantity. A measurement unit that measures the amount of electricity used in indoor equipment,
A first storage unit for storing a history of measurement results of electricity consumption;
A detection unit for detecting the temperature of at least the predetermined space;
A second storage unit for storing the temperature history;
A comparison unit for detecting a change in the air temperature in each of two different periods;
A first calculation unit that calculates the amount of change in the amount of electricity used by the device due to the change in temperature as an external influence amount of electricity;
A power management system, comprising: a display unit that displays the externally affected electric quantity. A measurement unit that measures the amount of electricity used in indoor equipment,
A first storage unit for storing a history of measurement results of electricity consumption;
A detection unit for detecting at least the staying situation of indoor people and the temperature of the predetermined space;
A second storage unit for storing the stay status history and the temperature history;
A comparison unit for detecting the stay situation and each change in the temperature in two different periods;
A first calculator that calculates the amount of change in the amount of electricity used by the device according to the amount of change in the stay status and the temperature as an externally affected amount of electricity;
A power management system, comprising: a display unit that displays the externally affected electric quantity.

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