JP2010210575A - Electrical apparatus operation state estimating device, information storage device, and electrical apparatus operation state estimating system - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To reduce the load of setting work of information related to each electrical apparatus, in an electrical apparatus operation state estimating device for estimating the operation state of a plurality of electrical apparatuses for receiving power by the same power supply trunk. <P>SOLUTION: This electrical apparatus operation state estimating device estimates the operation state of each of the plurality of electrical apparatuses for receiving power by the power supply trunk. The electrical apparatus operation state estimating device includes a sensor section for measuring the amount related to the electricity in the power supply trunk, a means for holding feature amount information accompanying the operation of each power supply apparatus in the power supply trunk and acquiring the feature amount information from the external information storage device existing in a public network for a part or all of the electrical apparatuses, and a means for estimating the operation state of each electrical apparatus using a measurement result of the sensor section and the held feature amount information. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to an electrical equipment operating status estimation device, an information storage device, and an electrical equipment operating status estimation system, and can be applied to, for example, a system that estimates individual power consumed by electrical equipment.

  Conventionally, as a method for individually estimating the power consumption of a plurality of electric devices used by electric power consumers, a measurement sensor for measuring characteristic quantities such as power supply current and power supply voltage is installed in the power supply trunk line, and the characteristic quantities Patent Document 1 and Non-Patent Document 2 have been proposed as systems for estimating the operating state of each electrical device using the time-series data.

JP 2008-39492 A

Takashi Onoda and Yukio Nakano, “Application of Support Vector Machine for On / Off Operation Determination of Domestic Electrical Equipment”, The Operations Research Society of Japan, Journal of Operations Research Society, May 2001, Volume 46, No. 5, pp .231-236

  However, in the systems described in Patent Literature 1 and Non-Patent Literature 2, it is necessary to measure and set current time-series data for each device when each electric device operates independently, and the user (electric power consumer, etc.) Therefore, the setting work was a burden.

  Therefore, in the electrical equipment operating status estimation device that estimates the operating status of a plurality of electrical equipments that are powered by the same power trunk, the electrical equipment operation that can reduce the burden of setting information related to each electrical equipment A situation estimation device, an information storage device, and an electrical equipment operation situation estimation system are desired.

  An electrical equipment operation status estimation apparatus according to a first aspect of the present invention includes: (1) an electrical equipment operation status estimation apparatus that estimates the operation status of each of a plurality of electrical equipments supplied with power from a power supply trunk line; A sensor unit for measuring the amount of electricity in the main line, and (3) holding characteristic amount information associated with the operation of each power supply device in the power supply main line, and a part or all of the electric device Feature amount information holding means for acquiring feature amount information from an external information storage device existing on the public network, and (4) measurement results of the sensor unit and feature amounts held by the feature amount information holding means It is characterized by comprising operating condition estimating means for estimating the operating condition of each of the above-mentioned electric devices using information.

  The information storage device according to the second aspect of the present invention is (1) existing on a public network, and (2) for one or more electrical devices, feature quantities associated with the operation of the electrical device in the power supply trunk of the electrical device. A feature amount information storage unit storing information; and (3) feature amount information supply means for supplying feature amount information stored in the feature amount information storage unit in response to a request from an external device. It is characterized by.

  The electrical equipment operating status estimation system according to the third aspect of the present invention includes (1) an electrical equipment operating status estimation device that estimates the operating status of each of a plurality of electrical equipments that are supplied with power from a power supply trunk, and the electrical equipment operating status. An information storage device for supplying information to the estimation device, (2) applying the electrical equipment operation status estimation device according to claim 1 as the electrical equipment operation status estimation device, and (3) charging as the information storage device The information storage device according to item 6 is applied.

  In an electrical equipment operation status estimation apparatus that estimates the operational status of a plurality of electrical equipments that are supplied with power from the same power supply trunk line, the burden of setting information related to each electrical equipment is reduced.

It is explanatory drawing shown about the functional structure of the electric equipment operating condition estimation system which concerns on 1st Embodiment. It is explanatory drawing shown about the example of the information stored in electric equipment feature-value DB which concerns on 1st Embodiment. It is the flowchart shown about the operation | movement of the prior measurement by the electric equipment operation condition estimation apparatus which concerns on 1st Embodiment. It is the flowchart shown about operation | movement condition estimation operation | movement by the electric equipment operation condition estimation apparatus which concerns on 1st Embodiment. It is explanatory drawing shown about the functional structure of the electric equipment operating condition estimation system which concerns on 2nd Embodiment. It is explanatory drawing shown about the example of the information registered into electric equipment feature-value DB which concerns on 2nd Embodiment. It is the first half part of the flowchart shown about the operation | movement of the prior measurement by the electric equipment operation condition estimation apparatus which concerns on 2nd Embodiment. It is the latter half part of the flowchart shown about the operation | movement of the prior measurement by the electric equipment operation condition estimation apparatus which concerns on 2nd Embodiment. It is the flowchart shown about operation | movement condition estimation operation | movement by the electric equipment operation condition estimation apparatus which concerns on 2nd Embodiment. It is explanatory drawing shown about the functional structure of the electric equipment operating condition estimation system which concerns on 3rd Embodiment. It is the flowchart shown about the operation | movement which extracts the feature-value information of an electric equipment in the feature-value holding | maintenance part which concerns on 3rd Embodiment.

(A) First Embodiment Hereinafter, a first embodiment of an electrical equipment operating status estimation device, an information storage device, and an electrical equipment operating status estimation system according to the present invention will be described in detail with reference to the drawings. Note that the information storage device of the first embodiment is described as being an electrical equipment feature amount DB.

(A-1) Configuration of First Embodiment FIG. 1 is a diagram illustrating a functional configuration of an electrical equipment operating status estimation system 1 equipped with an electrical equipment operating status estimation apparatus 10 according to an embodiment of the first embodiment. FIG.

  In FIG. 1, N electrical devices 20 (20-1 to 20 -N) are electrical devices that operate by receiving power supply from a feeder line (hereinafter also referred to as “power supply trunk line”) 40. For example, as the electrical equipment 20, electricity such as household electrical equipment (refrigerator, microwave oven, television, etc.), office electrical equipment (shredder, copy machine, etc.) and industrial electrical equipment (electric drill, lathe, etc.) can be used. The type of the device is not limited as long as the device operates using the device. In FIG. 1, the electric device 20 is described as having N units, but the number is not limited.

  The electrical equipment operating status estimation system 1A includes an electrical equipment operating status estimation device 10 and an electrical equipment feature DB 30.

  The electrical equipment operating state estimation device 10 estimates the power consumption of each of the N electrical equipments 20-1 to 20-N. Note that the electrical equipment operation status estimation apparatus 10 also estimates information related to the operational status of each electrical equipment 20 using information registered in an electrical equipment feature database (hereinafter referred to as “DB”) 30 described later. It is a device to do. Moreover, in this embodiment, the electrical equipment operation status estimation system 1 also estimates the power consumption status of each electrical device 20 as information related to the operation status of each electrical device 20.

  The electrical device feature amount DB 30 is information (hereinafter referred to as a feature amount) related to a waveform of a power supply current or the like in the power supply line 40 when the electrical device 20 is operated independently under the control of the power supply line 40 for each electrical device 20. (Referred to as “feature amount information”), and the stored feature amount information is provided to the electrical equipment operation state estimation device 10.

  The electrical equipment feature value DB 30 includes, for example, an electrical equipment feature value DB in an information processing apparatus having an execution configuration of a program such as a CPU, ROM, RAM, EEPROM, and hard disk, and an interface for communicating with other communication devices. It is constructed by installing a program or the like.

  In the first embodiment, as an example, the feature amount information is the feature amount (power supply current, power amount) in the power supply line 40 when the electric device 20 is operated independently under the power supply line 40 as in Patent Document 1. The time series data of the waveform of the power supply voltage or the like will be described as having at least, but the format of the feature amount information is not limited to this.

  FIG. 2 is an explanatory diagram showing an example of information stored in the electrical equipment feature amount DB 30.

  As shown in FIG. 2, feature quantity information is registered in the electrical equipment feature quantity DB 30 in association with each combination of electrical equipment identification information and operation mode information. The feature amount information to be detected can be detected. In FIG. 2, the “feature amount information” field is abbreviated as “XXX” or the like, but in actuality, the feature amount information itself or information on the link destination of the corresponding feature amount information. Etc. are stored.

  Information stored in the electrical equipment feature DB 30 may be registered in response to a request from the electrical equipment operating state estimation device 10 or may be registered in response to a request from another communication device on the network N. However, the user may directly input to the electrical device feature DB 30 (for example, input by a recording medium or input by an input device such as a keyboard), and means for inputting information to the electrical device feature DB 30 is limited. Is not. The network N may be a public network such as the Internet.

  The electrical equipment operation state estimation device 10 is connected to the electrical equipment feature value DB 30 via the network N, and estimates the power consumption of each electrical equipment 20 using the information in the electrical equipment feature value DB 30.

  The electrical equipment operation state estimation device 10 includes a measurement sensor 11, a feature amount holding unit 12, an operation state estimation unit 13, a network connection unit 14, an electrical device designation unit 15, an output unit 16, and an input unit 17. Here, the electrical equipment operation state estimation device 10 includes, for example, a CPU, a ROM, a RAM, and the like for executing communication processing, data processing, and the like in addition to a hardware communication unit and a measurement sensor. You may make it construct | assemble by installing the program (an electric equipment operating condition estimation program is included) which CPU runs. The functional configuration of the electrical equipment operation status estimation apparatus 10 including the above-described program can be shown in FIG.

  The input unit 17 is an input unit for a user to input an operation signal for the electrical equipment operating state estimation device 10. In the input unit 17, as a means for capturing a user operation signal, for example, mouse operation, button operation, keyboard operation, touch panel operation, barcode input by a barcode reader, or the like may be used, and the input means is not limited. It is. In addition, when the user inputs a signal by selecting a menu in the input unit 17, a display for displaying a menu may be provided. The display for displaying the menu may be shared when the output unit 16 described later includes a display.

  The measurement sensor 11 measures the amount (voltage, current) related to the electricity of the supply wire 40.

  As the measurement sensor 11, for example, a sensor that detects a power supply current and a power supply voltage in Patent Document 1 may be applied, but is not limited thereto.

  The electric device designating unit 15 has a function of grasping identification information (hereinafter referred to as “electric device identification information”) related to the electric devices 20-1 to 20 -N connected to the measurement sensor 11.

  As a method for the electric device designation unit 15 to grasp the electric devices 20-1 to 20-N, the electric device identification information of each electric device 20 input to the input unit 17 by the user may be read. When the electric device 20 has an intelligent communication function, the electric device specifying unit 15 may take in the electric device identification information from the electric device 20.

  As the electrical device identification information, for example, a product name, a model number, a serial number, an ID, or the like may be used, and the type and number are not limited as long as the electrical device 20 can be identified. Is.

  As a method for the user to input the electric device identification information to the input unit 17, a barcode attached to the electric device 20 is read using a bar code reader, or an image obtained by photographing the appearance of the electric device 20 with a camera is used. The image may be specified using a service such as image search, may be input using a keyboard, or may be input using a recording medium. Type of input means in the input unit 17 Is unquestionable.

  The feature amount holding unit 12 has a function of holding feature amount information for each electric device 20 specified by the electric device specifying unit 15.

  For example, when the feature amount information of the designated electrical device 20 is registered in the electrical device feature amount DB 30, the feature amount holding unit 12 stores the feature amount information, and when the feature amount information is not registered, The voltage waveform and the current waveform measured by the measurement sensor 11 may be converted into a digital signal, and the digitized feature amount of the electrical device 20 may be extracted. Further, when the feature amount information of the designated electrical device 20 has passed the expiration date (when the current time has passed the “expiration date” in the information shown in FIG. 2 described above), the measurement is performed by the measurement sensor 11. The converted voltage waveform and current waveform may be converted into a digital signal, and the digitized feature quantity of the electrical device 20 may be extracted. It should be noted that the “expiration date” information shown in FIG.

  In the feature amount holding unit 12, for example, as a detection method for detecting a feature amount based on a digital signal for each electrical device 20 based on a voltage waveform and a current waveform, the feature amount in the feature amount detection unit described in Patent Document 1 is used. However, the detection method is not limited to this.

  In addition, the feature amount holding unit 12 provides the power consumption estimation unit 32 with information obtained by digitizing the total current waveform and the total voltage waveform and the respective feature amounts of the electric devices 20-1 to 20 -N.

  The operation status estimation unit 13 has a function of performing estimation related to the operation status of each electrical device 20.

  Whether the operation status estimation unit 13 is operating for each electrical device 20 based on the feature amount information for each electrical device 20 held by the feature amount holding unit 12 and the total current waveform measured by the measurement sensor 11. Estimate. And the operating condition estimation part 13 estimates the power consumption for every electric equipment 20 estimated to be operating.

  As a method for estimating whether or not each of the electrical devices 20 is operating in the operating state estimation unit 13, the method (linear discrimination method) described in Patent Document 1 may be applied. It is not limited to this.

  As a method of estimating the power consumption for each electrical device 20 in the operational status estimation unit 13, for example, based on the estimation result of the operational status of the electrical device 20 and the current waveform in the feature amount information of the electrical device 20, A current component of the electrical device 20 in the total current waveform measured by the measurement sensor 11 is extracted, and a result obtained by multiplying the extracted current component waveform by the voltage waveform measured by the measurement sensor 11 is obtained. Is extracted as a power consumption waveform, and based on the power consumption waveform, the amount of power consumed by the electrical device 20 is currently consumed per unit time or consumed for a predetermined period (for example, 1 hour). The power consumption amount may be output.

  In addition, as a method of estimating the power consumption for each electrical device 20 in the operating state estimation unit 13, for example, the power consumption consumed per unit time by the electrical device 20 that is the target of power consumption estimation during operation. Holding the amount, and multiplying the amount of power per unit time by the accumulated time of the time estimated that the electric device 20 was operating within a predetermined period, the electric device 20 within the predetermined time It may be estimated as the power consumption consumed. For example, when the electric power consumption 20 is 100 [W] per unit time, the electric device 20 has accumulated for a predetermined time (for example, 1 hour) and operated for 30 minutes. This means that 50 [wh] is consumed. As a method of holding the amount of power consumed by the electrical device 20 per unit time in the operating state estimation unit 13, for example, calculation based on a current waveform or the like in the feature amount information of the electrical device 20 The information may be registered as additional information of the feature amount information in the feature amount DB 30, and the holding method is not limited.

  In the operating state estimation unit 13, as a method of holding the power consumption amount consumed per unit time by the electric device 20 during operation, for example, it is registered in advance in the electric device feature amount DB 30 together with the feature amount information. May be. As a method for calculating the power consumption amount per unit time in the operation state estimation unit 13 in advance when the feature amount information of each electrical device 20 is retained in advance, for example, the feature amount retention unit 12 is configured for each electrical device 20. When detecting the feature value of the voltage waveform and current waveform based on the digital signal (when the corresponding electrical device 20 is operating independently), the rising of the current waveform is observed, and the waveform is constant from the transient state. When the state is reached, the current waveform is recorded with the voltage waveform at the zero crossing point, and the voltage waveform sample point and current waveform of the data (corresponding to one cycle of the voltage waveform) up to the third zero crossing are recorded. The power consumption per unit time may be obtained based on the product sum of the sample points (weighted by the sampling time interval delta t).

  As described above, the operation status estimation unit 13 is not limited to a method for estimating the power consumption for each electrical device 20, the format of the estimation result to be output, and the like.

  The network connection unit 14 has an interface function for connecting the electrical equipment operating state estimation device 10 to the network N.

  The output unit 16 has a function of outputting the estimation result obtained by the operation status estimation unit 13.

  The output of the estimation result of the operation state estimation unit 13 by the output unit 16 is displayed on a display device such as a display, stored in a storage device such as a disk device, or printed on a printing device such as a printer. The output method may be configured to transmit to an external device, and the output method is not limited. For example, the output unit 16 may be sent to a connected PC terminal, a home appliance such as a television, a display device such as a remote control or a mobile phone, or a control device such as a power control device by wired or wireless communication. It may be sent out. Further, it may be transmitted to an electric power company, various monitoring servers, or the like via the network N.

  In FIG. 2, two pieces of information of product name and model number are registered as the electric device identification information. However, only one piece of electric device identification information or other information may be registered.

  The electrical equipment operation status estimation device 10 has two types of “preliminary setting mode” that holds feature amount information of each electrical equipment 20 in advance and “operation status estimation mode” that estimates and outputs the operational status of each electrical equipment 20. It is assumed that one of the operation modes is provided, and which mode is to be operated is determined by a user operation on the input unit 17.

(A-2) Operation | movement of 1st Embodiment Next, operation | movement of the electric equipment operating condition estimation system 1 of 1st Embodiment which has the above structures is demonstrated.

(A-2-1) Operation in Preset Mode First, the operation when the electrical equipment operating state estimation device 10 is operated in the preset mode will be described.

  FIG. 3 is a flowchart showing the pre-measurement operation performed by the electrical equipment operation status estimation apparatus 10.

  In FIG. 3, first, it is assumed that the electrical device identification information of the electrical devices 20-1 to 20 -N is input by the user's operation on the input unit 17, and the process of the preset mode is started.

  In FIG. 3, a variable “k” is used for the loop processing, and the electric device 20 to be processed is identified using k. For example, the description “electric device 20-k” has the same meaning as “electric device 20-1” when k = 1.

  When the processing in the preset mode is started, first, “k” is initialized (k = 1) (S101).

  Next, in the electrical equipment operation state estimation device 10, it is determined whether or not the variable k exceeds the number N of electrical equipment 20, and if it exceeds, the processing is terminated, and it is determined that the variable k does not exceed. In this case, the operation starts from step S103 described later (S102).

  When it is determined in step S102 described above that the variable k does not exceed the number N of the electrical devices 20, the feature amount holding unit 12 stores the feature amount of the electrical device 20-k in the electrical device feature amount DB 30. It is searched whether or not the information is registered (S103).

  In the above-described step S103, when it is determined that the feature amount information of the electrical device 20-k is registered in the electrical device feature amount DB 30, the feature amount holding unit 12 can further use the feature amount information. It is determined whether or not (S109). For example, if the current time point is within the expiration date of the feature amount information, it may be determined that the feature amount information is usable, and if the current time point is outside the expiration date, it may be determined that the feature amount information is unusable.

  In step S109 described above, when it is determined that the feature amount information of the electric device 20-k registered in the electric device feature amount DB 30 is usable, the feature amount holding unit 12 stores the electric amount information in the electric device feature amount DB 30. The feature amount information of the device 20-k is read (S110), and the operation starts from step S107 described later.

  On the other hand, if it is determined in step S103 that the feature information of the electrical device 20-k is not registered in the electrical device feature DB 30, or is registered in the electrical device feature DB 30 in step S109. If the feature quantity information of the electrical device 20-k is unusable, the current waveform and voltage waveform when the electrical device 20-k is operated alone are measured in the electrical device operation state estimation device 10. Measured using the sensor 11 (S104), the feature quantity holding unit 12 extracts the feature quantity of the electrical device 20-k using the current waveform and voltage waveform measured by the measurement sensor 11, and extracts feature quantity information. (S105). In step S105, the feature amount holding unit 12 uses the current waveform and the voltage waveform measured by the measurement sensor 11 to obtain the product power per unit time when the electric device 20-k is operated. Also good.

  In the above-described step S104, as a method of operating the electric device 20-k alone, for example, a message display or voice output for prompting the user to operate the electric device 20-k alone is displayed on the output unit 16 or the like. In addition, the user may operate the electric devices 20-1 to 20-N to operate the electric device 20-k alone. In addition, in step S105 described above, the timing at which the feature amount holding unit 12 starts the feature amount extraction processing may be the timing at which a signal for starting the feature amount extraction processing is input to the input unit 17 from the user.

  When the feature amount holding unit 12 extracts the feature amount of the electric device 20-k, the feature amount information is registered in the electric device feature amount DB 30 by the feature amount holding unit 12 (S106). In step S106, when the power consumption per unit time of the electrical device 20-k is calculated in addition to the feature amount of the electrical device 20-k in step S105, the power consumption is also calculated. Information relating to the electrical device 20-k may be registered in the electrical device feature DB 30.

  Then, the feature amount information created by the feature amount holding unit 12 in the above-described step S105, or the feature amount information read from the electrical device feature amount DB 30 by the feature amount holding unit 12 in the above-described step S110, It is recorded in the feature amount holding unit 12 (S107), the variable k is incremented (k = k + 1) (S108), and the operation starts again from step S102 described above.

  In the above-described step S107, the feature amount holding unit 12 records the retained feature amount information, but may be omitted (not recorded). That is, in the operation of the operation status estimation mode described later, when the electrical equipment operation status estimation device 10 estimates the operation status, the feature amount information previously stored in the preset mode is recorded in advance as in step S107 described above. Alternatively, the feature amount information may be read from the electrical device feature amount DB 30 each time the operation state is estimated without recording the feature amount information in the preset mode.

(A-2-2) Operation in Operation Situation Estimation Mode Next, an operation when the electrical equipment operation situation estimation device 10 is operated in the operation situation estimation mode will be described.

  FIG. 4 is a flowchart showing the operation status estimation operation performed by the electrical equipment operation status estimation apparatus 10.

  First, it is assumed that after the processing in the preset mode (see FIG. 3 described above) is performed, the operation state estimation mode is started by the user's operation on the input unit 17 (S201).

  Then, measurement of the total current waveform and voltage waveform is started by the measurement sensor 11 (S202).

  Then, the feature amount holding unit 12 starts a process of supplying the waveform obtained by extracting and digitizing the total current waveform and the voltage waveform measured by the measurement sensor 11 to the operation state estimating unit 13, and further, the feature amount The feature amount information of the electric devices 20-1 to 20-N is held by the holding unit 12, and is provided to the operating state estimation unit 13 (S203). In step S203, the feature amount holding unit 12 applies a method similar to the system described in Patent Document 1 to cut out the total current waveform and voltage waveform measured by the measurement sensor 11. Also good.

  In step S203 described above, the feature amount holding unit 12 may read and hold the feature amount information of the electric devices 20-1 to 20-N from the electric device feature amount DB 30, or the above-described processing. In the process of the preset mode (see FIG. 3 described above), when the information is stored in advance (see step S107 described above), the information may be used.

  And in the operation condition estimation part 13, based on the total current waveform and voltage waveform supplied from the feature-value holding | maintenance part 12, and the feature-value information of the electric equipment 20-1 to 20-N, the electric equipment 20-1 to 20 The process of estimating the power consumption of each of the electric devices 20-1 to 20-N is started based on the operation status estimation result (S204).

  And the output part 16 starts the output of the estimation result (at least one of an operation condition or power consumption) by the operation condition estimation part 13 (S205).

  As described above, in the electrical equipment operation state estimation device 10, the output of the operation state estimation results of the electrical devices 20-1 to 20-N is continued by the operation state estimation mode processing.

(A-3) Effects of First Embodiment According to the first embodiment, the following effects can be achieved.

  In the electrical equipment operating status estimation system 1, the feature quantity information related to the power consumption specific to the electrical equipment is registered in the electrical equipment feature quantity DB 30 through the public network, so that the feature quantity information has already been registered. If so, it is not necessary to measure each electric device 20 by the user (electric power consumer etc.), and the feature quantity information registered by the user (electric power consumer etc.) is made effective by using the feature quantity information once registered. Can be reduced.

  In the electrical equipment operating status estimation system 1, since the electrical equipment feature DB 30 connected to the public network N is used, for example, if a user or the like has already registered feature quantity information for a certain electrical equipment. Next, when another user wants to estimate the operating status of the same model of electrical equipment using the electrical equipment operating status estimation device 10, it has registered before without performing the feature extraction process in advance. Feature information can be used. In particular, if a manufacturer or seller of an electrical device registers feature amount information in advance, the user does not need to perform a feature amount extraction process in advance.

  In addition, in the electrical equipment operation state estimation device 10, in the preset mode, the extraction process is performed when the feature quantity related to the electrical equipment is not registered in the electrical equipment feature quantity DB 30. As a result, for example, even when an electrical equipment manufacturer has manufactured in the past and has not been registered, or when no manufacturer already exists, the electrical equipment feature quantity can be easily registered in the DB, and the registration data can be expanded. Is possible.

  Further, since the electrical device feature value DB 30 registers the registration date and the expiration date of the registered data for the feature value information, it is possible to cope with changes in device characteristics due to aging of the device or the like. Play.

  Furthermore, since the electrical equipment operation status estimation system 1 uses the current waveform and voltage waveform of the electrical equipment as the feature amount information, it does not depend on the estimation method used in the operation status estimation unit 13 and can be applied to various estimation methods. Applicable.

(B) Second Embodiment Hereinafter, a second embodiment of the electrical equipment operation status estimation device, the information storage device, and the electrical equipment operation status estimation system according to the present invention will be described in detail with reference to the drawings. Note that the information storage device of the second embodiment is described as being an electrical equipment feature amount DB.

(B-1) Configuration of Second Embodiment In the first embodiment, as shown in FIG. 2 described above, one piece of feature amount information is associated with one piece of electric device identification information in the electric device feature amount DB. In the second embodiment, when the electrical devices 20-1 to 20-N have a plurality of operation modes, the feature amount information for each operation mode is also registered in the second embodiment. However, it is different in that it is used for estimating the operating status.

  The plurality of operation modes in the electric devices 20-1 to 20-N are, for example, operation modes such as “strong”, “medium”, and “weak” in a heating device or the like. Hereinafter, the difference between the second embodiment and the first embodiment will be described.

  FIG. 5 is an explanatory diagram showing a functional configuration of an electrical equipment operation status estimation system 1A equipped with the electrical equipment operation status estimation device 10A of this embodiment.

  Since the electric devices 20-1 to 20-N in FIG. 5 are the same as those in the first embodiment, detailed description thereof is omitted.

  As described above, the electrical device feature amount DB 30A is the first in that when the electrical devices 20-1 to 20-N are provided with a plurality of operation modes, the feature amount information for each operation mode is also registered. This is different from the embodiment.

  FIG. 6 is an explanatory diagram showing an example of information registered in the electrical equipment feature DB 30A.

  As shown in FIG. 6, the electrical device feature DB 30 </ b> A is a first embodiment in that a field for registering information related to “operation mode” (hereinafter referred to as “operation mode information”) is added. Different from the ones.

  For example, the electric device 20-1 (product name: “A”, model number: “ABC01”) is an electric device having three operation modes of “strong”, “medium”, and “weak”. 2 (product name: “B”, model number: “BCD02”) is assumed to have only a single operation mode.

  In this case, as shown in FIG. 6, the electrical device 20-1 (product name: “A”, model number: “ABC01”) corresponds to each of three operation modes (“strong”, “medium”, “weak”). Feature amount information to be registered in the electrical device feature amount DB 30A. For the electric device 20-2 (product name: “B”, model number: “BCD02”), one feature amount information is registered in the electric device feature amount DB 30A. When the electric device 20 has only a single operation mode, the operation mode field may be left blank as shown in FIG.

  The electric equipment operation state estimation device 10A includes a measurement sensor 11, a feature amount holding unit 12A, an operation state estimation unit 13A, a network connection unit 14, an electric equipment designation unit 15A, an output unit 16, and an input unit 17. Since the measurement sensor 11, the network connection unit 14, the output unit 16, and the input unit 17 are the same as those in the first embodiment, description thereof is omitted.

  The electric device designating unit 15 </ b> A includes not only the electric device identification information related to the electric devices 20-1 to 20 -N connected under the measurement sensor 11, but also when the electric device 20 has a plurality of operation modes. Is different from that of the first embodiment in that it also grasps the operation mode information.

  As a method for the electric device specifying unit 15A to grasp the operation mode of the electric devices 20-1 to 20-N, each of the electric devices 20 input to the input unit 17 by the user as in the electric device identification information. The operation mode information may be read, or when the electric device 20 has an intelligent communication function, the electric device specifying unit 15A may acquire the operation mode information from the electric device 20.

  When the electric device 20 has a plurality of operation modes, the feature amount holding unit 12A is different from that of the first embodiment in that feature amount information is held for each operation mode.

  When the feature amount holding unit 12A retrieves the feature amount information of the electrical device 20 specified by the electrical device specifying unit 15A from the information stored in the electrical device feature amount DB 30A, the feature amount holding unit 12A identifies the electrical device of the specified electrical device 20 By searching using the information as a key, when the specified electrical device 20 has a plurality of operation modes, it is possible to detect feature amount information for each operation mode. For example, if the information stored in the electrical device feature value DB 30A has the contents shown in FIG. 6 described above, when the feature value holding unit 12A searches for the product name “A”, “strong”, “medium” "," Weak "and feature amount information can be detected for the three operation modes.

  As described above, for the electrical equipment 20 in which the feature quantity information for each operation mode is stored in the electrical equipment feature quantity DB 30A, all the operation modes can be obtained even if the operation mode information is not grasped in advance in the feature quantity holding unit 12A. Since the feature amount information can be held for the electric device 20, the electric device designation unit 15 </ b> A may not grasp the operation mode information for such an electric device 20.

  Based on the feature amount information held by the feature amount holding unit 12A and the total current waveform measured by the measurement sensor 11, the operating state estimation unit 13A not only determines whether or not each electric device 20 is operating. The electrical device 20 having a plurality of operation modes is different from that of the first embodiment in that it also estimates in which operation mode it is operating. And the operating condition estimation part 13 estimates the power consumption for every electric equipment 20 estimated to be A and is operating.

(B-2) Operation | movement of 2nd Embodiment Next, operation | movement of 1 A of electric equipment operating condition estimation systems of 2nd Embodiment which has the above structures is demonstrated.

(B-2-1) Operation in Preset Mode First, the operation when the electrical equipment operation status estimation device 10A is operated as the preset mode will be described.

  FIGS. 7 and 8 are flowcharts showing the pre-measurement operation by the electrical equipment operation status estimation apparatus 10A.

  7 and 8, first, the electric device identification information of the electric devices 20-1 to 20 -N is input to the electric device specifying unit 15 </ b> A by the user's operation on the input unit 17, and the process of the preset mode is performed. It is supposed to have started.

  7 and 8, the variable “k” is used for the loop processing as in FIG. 3 described above.

  When the processing in the preset mode is started, first, “k” is initialized (k = 1) (S301).

  Next, in the electrical equipment operating state estimation device 10A, it is determined whether or not the variable k exceeds the number N of electrical equipment 20, and if it exceeds, the processing is terminated, and it is determined that the variable k does not exceed. In this case, the operation starts from step S303 described later (S302).

  In the above-described step S302, when it is determined that the variable k does not exceed the number N of the electrical devices 20, the feature amount holding unit 12A stores the feature amount of the electrical device 20-k in the electrical device feature amount DB 30A. It is searched whether or not the information is registered (S303).

  In the above-described step S303, when it is determined that the feature amount information of the electric device 20-k is registered in the electric device feature amount DB 30A, the feature amount holding unit 12A can further use the feature amount information. It is determined whether or not (S310).

  In the above-described step S310, when it is determined that the feature amount information of the electric device 20-k registered in the electric device feature amount DB 30A is usable, the feature amount holding unit 12A supplies the electric device feature amount DB 30A with the electric amount information. The feature amount information of the device 20-k is read (S311), and the operation starts from step S308 described later. If a plurality of pieces of feature amount information is detected in step S303 described above, the feature amount holding unit 12A assumes that the electrical device 20-k has a plurality of operation modes, and feature amount information for each operation mode. Is read.

  On the other hand, when it is determined in step S303 that the feature amount information of the electric device 20-k is not registered in the electric device feature amount DB 30A, or in step S310, the feature amount information is registered in the electric device feature amount DB 30A. If the feature amount information of the electrical device 20-k is unusable, the feature amount holding unit 12A determines whether or not the electrical device 20-k has a plurality of operation modes (S304). ), When it is determined that the electric device 20-k has a plurality of operation modes, the operation starts from step S401 (see FIG. 8) described later, and the electric device 20-k has a plurality of operation modes. If it is determined that there is not, the operation starts from step S305 described later. In the feature amount holding unit 12A, as a method for determining whether or not the electric device 20-k has a plurality of operation modes, for example, the electric device designating unit 15A has a plurality of operation modes for the electric device 20-k. The determination may be made based on whether information is set.

  In the above-described step S304, when the electric device 20-k does not have a plurality of operation modes (only a single operation mode), the electric device 20-k is singly used in the electric device operation state estimation device 10A. A current waveform and a voltage waveform when operated are measured using the measurement sensor 11 (S305), a feature amount of the electric device 20-k is extracted to create feature amount information (S306), and the feature amount information is It is registered in the electrical equipment feature DB 30A (S307). Since the operations in steps S305 to S307 are the same as those in steps S104 to S106 described above, detailed description thereof is omitted.

  Then, the feature amount information created by the feature amount holding unit 12A in the above-described step S306, or the feature amount information read from the electrical device feature amount DB 30A by the feature amount holding unit 12A in the above-described step S311, It is recorded in the feature amount holding unit 12A (S308).

  On the other hand, when it is determined in step S304 described above that the electrical device 20-k has a plurality of operation modes, the electrical device 20-k is designated as the electrical device designating unit 15A in the electrical device operating state estimation device 10A. The current waveform and the voltage waveform in the case of operating alone in the first operation mode specified in step S <b> 401 are measured using the measurement sensor 11 (S <b> 401), the feature amount of the electrical device 20-k is extracted, and the feature amount information Is created (S402), the feature quantity information is registered in the electrical equipment feature quantity DB 30A (S403), and is further recorded in the feature quantity holding unit 12A. The operations in steps S401 to S404 are the same as those in steps S305 to S308 described above except that the electric device 20-k is operated independently in a predetermined operation mode.

  Next, the feature amount holding unit 12A determines whether or not the next operation mode exists in the electrical device designation unit 15A (S405). If the next operation mode exists, the operation mode is used. The operations in steps S401 to S404 described above are repeated again, and if there is no next operation mode, the feature amount extraction processing for each operation mode of the electrical device 20-k is terminated, and the operation starts from step S309 described later. To do.

  When the feature amount information recording by the feature amount holding unit 12A in step S308 described above or the feature amount extraction processing regarding each operation mode of the electric device 20-k in steps S401 to S405 is completed, the operation state estimation of the electric device is performed. In the apparatus 10A, the variable k is incremented (k = k + 1) (S309), and the operation starts again from step S302 described above.

  In the above-described steps S307 and S404, the feature amount holding unit 12A records the retained feature amount information. However, as in the first embodiment, it may be omitted (not recorded).

(B-2-2) Operation in Operation Situation Estimation Mode Next, an operation when the electric equipment operation situation estimation device 10A is operated in the operation situation estimation mode will be described.

  The operation status estimation operation by the electrical equipment operation status estimation device 10A can also be shown in FIG. 4 described above used in the description of the first embodiment.

  Hereinafter, the difference of the operation status estimation operation by the electrical apparatus operation status estimation device 10 </ b> A from the first embodiment will be described.

  In step S203, the electrical equipment 20 having a plurality of operation modes is different from the first embodiment in that feature amount information for each operation mode is retained.

  In step S204, the operation state estimation unit 13A is different from the first embodiment in that it understands in which operation mode the electric equipment 20 having a plurality of operation modes is operating. In step S204, the operation status estimation unit 13A performs the first implementation in that it estimates that the electric equipment 20 having a plurality of operation modes is consuming electric power according to the operation mode in operation. It is different from the form.

(B-3) Effects of Second Embodiment According to the second embodiment, the following effects can be achieved.

  In the electrical equipment operation status estimation system 1A, when the electrical equipment 20 has a plurality of operation modes, the feature quantity for each operation mode is extracted and registered in the electrical equipment feature quantity DB 30A. Compared with the embodiment, it is possible to improve the accuracy of estimation of the operating status and the like.

(C) Third Embodiment Hereinafter, a third embodiment of the electrical equipment operating status estimation device, the information storage device, and the electrical equipment operating status estimation system according to the present invention will be described in detail with reference to the drawings. Note that the information storage device according to the third embodiment is described as being an electrical equipment feature amount DB.

(C-1) Configuration of the Third Embodiment In the first and second embodiments described above, the feature amount information is obtained by operating the electric device 20 alone under the feeder line 40 as in Patent Document 1. In this case, the waveform is time-series data such as the power supply current in the power supply line 40. However, this waveform may be expressed and processed not by time-series data but by frequency components (frequency domain). .

  Therefore, in the third embodiment, the feature amount information has at least frequency components of waveforms such as a power supply current and a power supply voltage in the power supply line 40 when the electric device 20 is operated independently under the power supply line 40. The difference from the first embodiment will be described.

  FIG. 10 is an explanatory diagram showing a functional configuration of an electrical equipment operation status estimation system 1B equipped with the electrical equipment operation status estimation device 10B of this embodiment.

  Since the electric devices 20-1 to 20-N in FIG. 10 are the same as those in the first embodiment, detailed description thereof is omitted.

  As described above, the electrical device feature amount DB 30B is different from the first embodiment in that it stores at least information expressed in the form of frequency components as the feature amount information related to the electrical device 20.

  The electric equipment operation state estimation device 10B includes a measurement sensor 11, a feature amount holding unit 12B, an operation state estimation unit 13B, a network connection unit 14, an electric device designation unit 15, an output unit 16, and an input unit 17. Since the measurement sensor 11, the network connection unit 14, the electrical device designation unit 15, the output unit 16, and the input unit 17 are the same as those in the first embodiment, description thereof is omitted.

  The feature amount holding unit 12B extracts a frequency component of a waveform such as a power supply current in the power supply line 40 when the electric device 20 is operated alone under the power supply line 40 as a feature value of the electric device 20. This is different from the first embodiment. As a method for extracting a frequency component of a waveform such as a power supply current, for example, Fourier transform may be used.

  The operating state estimation unit 13B uses the feature amount information expressed by the frequency components supplied from the feature amount holding unit 12B and the frequency components of the total current waveform to operate the electric devices 20-1 to 20-N. And it is different from the first embodiment in that the power consumption is estimated.

  For example, Patent Document 1 discloses a method in which the operating status estimation unit 13B estimates the operating status of each electrical device 20 based on the feature amount information expressed by frequency components and the frequency components of the total current waveform. In the “linear discriminant method”, the operation object of the least square method may be applied by replacing the time series data with the data of the frequency component.

  In addition, as a method for estimating the power consumption for each electrical device 20 in the operating state estimation unit 13B, for example, as in the example shown in the first embodiment, the electrical device 20 that is an estimation target of the power consumption. However, the amount of power consumed per unit time during operation (a state where the corresponding electric device 20 is operating independently) is held, and the amount of electric power per unit time is determined within the predetermined period. You may make it estimate the value which multiplied the accumulation time of the time estimated that 20 was working as the power consumption which the said electric equipment 20 consumed within predetermined time.

  For example, when the operation state estimation unit 13B (feature amount holding unit 12B) detects a feature amount based on a digital signal with respect to a voltage waveform and a current waveform for each electric device 20 (the corresponding electric device 20 is operating independently). When the current waveform is subjected to Fourier transform, the frequency component and the phase component can be combined and expressed as a complex number (complex frequency component). In other words, when the frequency phase components of the voltage waveform and the current waveform are represented by complex numbers, they can be represented by the frequency phase component I (j and j are frequency components) of the current i (t) in Patent Document 1. At this time, the least square method of Equation (2) used in Patent Document 1 is ΣE (when E (j) is the Fourier transform of e (j) (= the same as using I instead of i). The square of the magnitude of j) = Σ [(E (j)) square of real part + (E (j)) square of imaginary part]] is added for all j. Then, when the (effective) power consumption is the frequency phase component I (j) of the current i (t) and the frequency phase component V (j) of the voltage v (t), the complex conjugate xI of V (j) The real part of (j)] is obtained for all j, and the power consumption per unit time can be obtained based on the (effective) power consumption.

  In addition, as a method for calculating the power consumption consumed per unit time during operation, the same method as in the first embodiment described above may be used.

  As described above, in the operating state estimation unit 13B, the method of estimating the power consumption for each electrical device 20, the format of the estimation result to be output, and the like are not limited.

(C-2) Operation of the Third Embodiment Next, the operation of the electrical equipment operating status estimation system 1B of the third embodiment having the above configuration will be described.

(C-2-1) Operation in Preset Mode First, an operation when the electric equipment operating state estimation device 10B is operated in the preset mode will be described.

  The operation of the preliminary measurement by the electrical equipment operation state estimation device 10B of the third embodiment can also be shown in FIG.

  The difference from the first embodiment is the extraction of feature amounts and creation of feature amount information when the feature amount holding unit 12B operates the electric device 20-k alone in step S105 described above.

  FIG. 11 is a flowchart illustrating an operation of extracting feature amount information of the electrical device 20 in the feature amount holding unit 12B. That is, it becomes the detail of the process of the above-mentioned step S105 in 3rd Embodiment.

  First, in the feature amount holding unit 12B, the total current waveform and the voltage waveform acquired by the measurement sensor 11 are converted from an analog signal to a digital signal (S501), the waveform is cut out (S502), and Fourier transform is performed (S503). The power for each frequency component is extracted as a feature amount, and the feature amount is created as feature amount information.

  Note that, in the above-described step S502, the waveform may be cut out using the same method as in step S203 (see FIG. 4).

(C-2-2) Operation in Operation Status Estimation Mode Next, an operation when the electric equipment operation status estimation device 10B is operated in the operation status estimation mode will be described.

  The operation status estimation operation performed by the electrical equipment operation status estimation device 10 can also be shown by the flowchart of FIG. 4 described above.

  The difference between the third embodiment and the first embodiment is that the feature amount information used when the operation state estimation unit 13B estimates the operation state of the electrical devices 20-1 to 20-N is replaced with a frequency component. Therefore, in step S204 described above, the calculation method for estimating the operating status is different as described above.

(C-3) Effects of Third Embodiment According to the third embodiment, the following effects can be achieved.

  In the operation status estimation unit 13B, the operation status and power consumption for each electrical device 20 are estimated using information expressed by frequency components instead of time series data. For example, in the frequency component of the total current waveform, unnecessary frequency components (for example, noise from the outside) can be preliminarily discarded to estimate the operating status and power consumption, so that more accurate calculation is performed. There is an effect that can be.

(D) Other Embodiments The present invention is not limited to the above-described embodiments, and may include modified embodiments as exemplified below.

(D-1) About the electric equipment operation condition estimation apparatus of said each embodiment, you may make it reduce in size and make it a portable system which can freely connect with a feeder and an electric equipment.

(D-2) In the electrical equipment feature value DB of each of the above embodiments, by providing a public content (homepage or the like) and adding a configuration for publishing the number of registered electrical equipment for each registrant, It is possible to construct an environment in which electric power consumers and manufacturers actively register.

(D-3) In each of the above-described embodiments, the electrical equipment operating state estimation device 10A has two modes of the preset mode and the operating state estimation mode. However, only the operating state estimation mode is provided. Also good. That is, the feature amount holding unit may hold the feature amount information only by reading the feature amount information from the electrical equipment feature amount DB. This is because it is not necessary to provide the preset mode if the feature amount information is registered in advance in the electrical device feature amount DB for all the electrical devices.

(D-4) In each of the embodiments described above, the electric equipment operating state estimation device has been described as estimating the operating state and power consumption of each electric appliance, but is configured to estimate and output only the operating state. You may do it.

  In each of the above embodiments, the electrical equipment operation status estimation device captures the total current waveform and voltage waveform in the feeder line, but estimates only the operation status of each electrical equipment and does not estimate power consumption. In some cases, only the current waveform may be captured.

(D-5) In each of the embodiments described above, the number of electric device feature amount DBs to be arranged is described as one device, but it may naturally be constructed as a database distributed in a plurality of devices. It is.

  Further, a plurality of electric device feature DBs (not linked) may be arranged on the network N. For example, an electric device feature amount DB that is different for each electric device manufacturer is arranged on the network N, and identification information (domain) for accessing the electric device feature amount DB of each manufacturer on the electric device operation state estimation device side Name, IP address, URL, etc.), and the feature amount information is acquired by accessing different electrical device feature amount DBs for each electrical device manufacturer. In that case, as a method of specifying the manufacturer of each electrical appliance on the electrical equipment operating state estimation device side, for example, the user may input or grasp based on the model number, and the method is limited. Is not.

  DESCRIPTION OF SYMBOLS 1 ... Electrical apparatus operation condition estimation system, 10 ... Electric apparatus operation condition estimation apparatus, 11 ... Measurement sensor, 12 ... Feature-value holding part, 13 ... Operation condition estimation part, 14 ... Network connection part, 15 ... Electric apparatus designation | designated part, DESCRIPTION OF SYMBOLS 16 ... Output part, 17 ... Input part, 20, 20-1 to 20-N ... Electric equipment, 30 ... Electric equipment feature-value DB, 40 ... Feed line, N ... Network.

Claims (9)

In the electrical equipment operating status estimation device that estimates the operating status of each of a plurality of electrical equipment that is supplied with power from the power supply trunk line,
A sensor unit for measuring the amount of electricity in the power supply main line;
In the power supply main line, the feature amount information associated with the operation of each power supply device is retained, and a part or all of the electrical device is characterized by an external information storage device existing on a public network. Feature quantity information holding means for acquiring quantity information;
An electrical apparatus comprising: an operation state estimation unit that estimates an operation state of each of the electrical devices using the measurement result of the sensor unit and the feature amount information held by the feature amount information holding unit Operation status estimation device.   The operation status estimation means performs estimation related to power consumption of each of the electrical devices using an estimation result of the operation status of each of the electrical devices. The electrical apparatus operation condition estimation apparatus of description.   The feature quantity information holding means measures the feature quantity information relating to the electrical device of the electrical equipment that is not stored in the information storage device in response to a user operation. It extracts from a result, The electric equipment operation condition estimation apparatus of Claim 1 or 2 characterized by the above-mentioned.   In response to a user operation, the feature quantity information holding means measures the feature quantity information relating to the electrical device that is not stored in the information storage device among the electrical equipment. 4. The electrical equipment operation status estimation apparatus according to claim 3, further comprising registration means for registering the feature amount information in the information storage device when extracted from the result.   The feature amount information includes at least information related to a frequency component of a current waveform in the power supply trunk line when each of the power supply devices is operated alone. The electrical apparatus operation condition estimation apparatus of description. On a public network,
For one or more electrical devices, a feature amount information storage unit that stores feature amount information associated with the operation of the electrical device on the power supply trunk of the electrical device;
An information storage device comprising: feature amount information supply means for supplying feature amount information stored in the feature amount information storage unit in response to a request from an external device.   7. The information storage device according to claim 6, further comprising feature amount information updating means for updating feature amount information stored in the feature amount information storage unit in response to a request from the external device.   The information storage device according to claim 6 or 7, wherein the external device corresponds to at least an electrical equipment operation status estimation device that estimates the operational status of each electrical equipment. An electrical equipment operating status estimation device that estimates the operating status of each of a plurality of electrical equipment that is powered from a power supply trunk, and an information storage device that supplies information to the electrical equipment operating status estimation device,
Applying the electrical equipment operation status estimation device according to claim 1 as the electrical equipment operation status estimation device,
7. An electrical equipment operating status estimation system, wherein the information storage device according to claim 6 is applied as the information storage device.

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