JP5561783B2 - Electric device discriminating apparatus, electric device discriminating method, and electric device discriminating program - Google Patents

Description

  The present invention relates to an electrical device determination device, an electrical device determination method, and an electrical device determination program.

  Examples of systems for managing electrical devices are disclosed in Patent Documents 1 to 17 and Non-Patent Documents 1 to 3. There is a method of preparing a database of feature quantities such as current and voltage of an electrical device in advance and comparing the measured data with the measured data, and various methods are available.

  For example, the energization control device described in Patent Document 1 sets a learning coefficient for each adapter, learns the usage state of an electrical device, predicts the energization control possible time of the electrical device, performs communication control, and can save power It is said.

  The load demand estimation apparatus described in Patent Literature 2 discriminates the type of device whose signal has changed, and grasps the load amount for each device.

  In the remote detection method for electrical equipment described in Patent Document 3, the characteristic current waveform of the electrical equipment is stored in the database of the server in advance, the electrical equipment is actually identified from the current waveform transmitted from the electrical equipment, and the state is detected. And take corresponding measures.

  The electric equipment operating state grasping method described in Patent Document 4 is a method of measuring the power supplied by the power line with a power sensor and grasping the operating status of each of the plurality of electric equipments supplied with power by the power line.

  The device information specifying device described in Patent Document 5 calculates a feature amount of a current waveform using a current waveform detected using a current detection element and a power supply voltage waveform obtained from an output voltage waveform from a voltage dividing circuit, The feature quantity registered in the database is compared to identify the model and behavior of the load device.

  The electrical equipment management support system described in Patent Literature 6 determines the maintenance time of electrical equipment from the database of feature data and individual attribute data of electrical equipment and the status information of the electrical equipment managed by the home server. .

  The electrical equipment monitoring system described in Patent Literature 7 identifies electrical equipment corresponding to the feature data and monitors the state of the electrical equipment.

  The electrical equipment management system described in Patent Document 8 obtains a feature quantity from the amount of electricity supplied to the electrical equipment via the power line, and specifies and uses the electrical equipment from the individual attribute data of the feature quantity corresponding to each type of electrical equipment. State management is performed.

  The power management system described in Patent Document 9 specifies an electronic device from electronic devices connected to a plug, determines whether the electronic device is an electronic device permitted to be used by a user, and supplies or shuts off power. It is carried out.

  The electrical equipment monitoring system described in Patent Document 10 recognizes a pattern of a feature amount such as a current detected by a sensor using a stochastic statistical pattern recognition method based on a hidden Markov model, and operates a plurality of electrical equipment operating states. Monitoring.

  The electrical equipment operation state estimation system described in Patent Document 11 outputs a detection signal corresponding to a power supply current and a power supply voltage output from a sensor to a feature amount detection unit, and which electrical equipment is operated using a linear discrimination method. Is determined.

  The remote detection method of an electric device described in Patent Document 12 is a method of identifying an electric device by detecting current / voltage of a plurality of electric devices and comparing current waveforms or feature amounts with those of a database.

  The power supply device described in Patent Document 13 collates the data of the current at the time of activation flowing through the device connected to the outlet, and determines whether it is the activation current data of the same device.

  In the behavior / safety confirmation system described in Patent Document 14, the total current is detected by the sensor, detected as a feature amount, and which electrical device is operating based on the feature amount, and based on the electrical device, The behavior and safety confirmation are performed while estimating the behavior of the resident using a hidden Markov model.

  The device estimation apparatus described in Patent Literature 15 extracts a time fluctuation waveform on which power demand for electrical equipment is superimposed and the magnitude of the power demand fluctuation amount, and extracts a representative period from the period distribution of the time fluctuation waveform. The characteristics unique to intermittent operation of electrical equipment are compared, and electrical equipment during intermittent operation is estimated.

  The electric equipment operation state estimation device described in Patent Document 16 measures the amount related to electricity, and estimates the operation state of the electric equipment using feature amount information associated with the operation of the power supply equipment.

  The electric device discriminating device described in Patent Literature 17 calculates a feature amount representing the characteristic of the electric device and discriminates the electric device.

  Non-Patent Document 1 discloses a configuration in which time series data of power consumption of the entire house is measured and a waveform of power consumption of each device is extracted based on the time series data.

  Non-Patent Document 2 discloses a configuration in which a feature amount is calculated from a waveform of a current supplied to an electrical device, and the electrical device is determined based on the feature amount.

  Non-Patent Document 3 discloses a configuration in which an electric device is discriminated by comparing a power waveform characteristic of power supplied to the electric device with a power load pattern measured in advance.

JP 2001-344027 A JP 2002-199623 A JP 2003-2559569 A JP 2003-333768 A JP 2004-219171 A JP 2004-221770 A JP 2004-222374 A JP 2004-222375 A JP 2006-139445 A JP 2007-3296 A JP 2008-39492 A JP 2008-109849 A JP 2008-306809 A JP 2009-43141 A JP 2009-255792 A JP 2010-210575 A JP 2010-213469 A

Mitsutaka Matsumoto, Kei Fujimoto, Tadaho Enomoto, “Examination of a system to analyze the breakdown of household power consumption” Masahito Ito, Toshiyuki Otsuki, Satoshi Inoue, Hiroshi Shigeno, Kenichi Okada, Atsushi Matsushita, “Home Appliance Detection Method and Control System Using Characteristics of Power Consumption Waveform”, Transactions of Information Processing Society of Japan, Vol 44, No. 1, pp. 95-105 Akio Tanaka, Chiharu Murakoshi, and Hidetoshi Nakagami, “On the Element Decomposition Method of Household Electric Load Measurements” Proceedings of the 12th Energy System and Economic Conference Lecture of the Japan Society of Energy and Resources pp. 91-94

  Since Patent Documents 1, 10, 11, 14, and 16 do not specify combinations of feature amounts, in order to use them, it is necessary for the user to search for an optimal combination, and the performance may be greatly affected by the selection method. There is sex.

  Since Patent Documents 9 and 13 focus on the current at the time of startup, the learned device can be discriminated, but since the feature as the type of the electric device is not used, the devices are the same type but different. (For example, the television of company A and the television of company B) could not be determined without learning.

  Patent Document 15 and Non-Patent Documents 1 and 3 are intended for long-time waveforms, and it is impossible to distinguish devices at high speed.

  In Patent Document 2, the feature amount of the load amount is used, and in Patent Document 4, the feature amount of the power is used. However, neither of them is sufficiently accurate to grasp a plurality of devices. .

  Patent Documents 7 and 8 use a three-dimensional feature value that represents a current value, a feature value that represents the shape of a current waveform, and a feature value that represents a time difference between current and voltage. Was not enough.

  Patent Documents 5 and 6 and Non-Patent Document 2 use five-dimensional feature values of current average value, peak average ratio, current and voltage peak time difference, energization time, and peak delay rate, and are fast and sufficiently accurate. As a result of experiments, it was found that there is room for improvement in accuracy. Further, Patent Document 17 has a problem that a characteristic amount used for determination has a change in environment such as temperature and illuminance, and a device for measurement is required.

  Patent Document 3 discloses an average value, peak value, effective value, power factor, crest factor, waveform rate, time constant as a convergence time of current change, energization time within a period, phase difference, peak of power supply voltage and current consumption. The 10-dimensional feature amount of the time difference is used. Patent Document 12 describes an average value of current consumption, a change in current consumption, a peak value, an effective value, a crest factor, a waveform rate, a time constant as a convergence time of current change, an energization time within a period, and a peak of current consumption during energization. An 11-dimensional feature value of position, power supply voltage and current consumption peak time difference, and power factor are used. In both cases, sufficiently accurate discrimination was realized, but it was confirmed as a result of experiments that there is almost no improvement in accuracy even if feature quantities are added after the 8th dimension. Further, it is known that when the dimension of the feature amount increases, the amount of calculation increases exponentially during learning and optimization.

  The present invention was made in view of the circumstances as described above, reduces the number of items to be measured, and performs the calculation efficiently, thereby enabling an electric device discriminating device capable of discriminating a high-speed and high-accuracy device, It is an object of the present invention to provide an electrical device discrimination method and an electrical device discrimination program.

An electrical equipment discriminating apparatus according to a first aspect of the present invention is:
Electrical measuring means for measuring the voltage and current supplied to the target electrical equipment;
Feature calculation means for calculating a feature quantity of electrical characteristics including the minimum power, which is the minimum value of one waveform of power corresponding to one cycle of the AC power supply voltage, from the measured voltage and current;
Discriminating means for discriminating the type of the target electrical device based on the characteristic amount of the electrical characteristic including the minimum power;
Equipped with a,
The feature calculation means calculates a current effective value, a current peak, a current kurtosis, a crest factor, a minimum power, a current deviation, a ratio between a current effective value and a minimum power value, and a power factor.
The determining means is based on the current effective value, current peak, current kurtosis, crest factor, minimum power value, current deviation, current effective value to minimum power value ratio, and power factor calculated by the feature calculating means. Determining the type of the target electrical device,
It is characterized by that.

An electrical equipment discrimination method according to a second aspect of the present invention is:
An electrical device identification method performed by an apparatus for determining the type of electrical device from electrical characteristics,
An electrical measurement step for measuring the voltage and current supplied to the target electrical device;
A feature calculation step of calculating a feature value of an electrical characteristic including the minimum power, which is the minimum value of one waveform of power corresponding to one cycle of the AC power supply voltage, from the measured voltage and current;
A determination step of determining a type of the target electric device based on a feature amount of an electric characteristic including the minimum power;
Equipped with a,
In the feature calculation step, current effective value, current peak, current kurtosis, crest factor, minimum power, current deviation, ratio of current effective value and minimum power value, and power factor are calculated,
The determination step is based on the current effective value, current peak, current kurtosis, crest factor, minimum power value, current deviation, current effective value to minimum power value ratio, and power factor calculated in the feature calculation step. Determining the type of the target electrical device,
It is characterized by that.

An electrical equipment determination program according to a third aspect of the present invention is:
On the computer,
An electrical measurement step for measuring the voltage and current supplied to the target electrical device;
A feature calculation step of calculating a feature value of an electrical characteristic including the minimum power, which is the minimum value of one waveform of power corresponding to one cycle of the AC power supply voltage, from the measured voltage and current;
A determination step of determining a type of the target electric device based on a feature amount of an electric characteristic including the minimum power;
Was executed,
In the feature calculation step, current effective value, current peak, current kurtosis, crest factor, minimum power, current deviation, ratio of current effective value and minimum power value, and power factor are calculated,
The determination step is based on the current effective value, current peak, current kurtosis, crest factor, minimum power value, current deviation, current effective value to minimum power value ratio, and power factor calculated in the feature calculation step. Determining the type of the target electrical device,
It is characterized by that.

  According to the present invention, the number of items to be measured is reduced and the calculation is performed efficiently, thereby enabling high-speed and high-precision device discrimination.

It is a block diagram which shows the structural example of the electric equipment discrimination | determination apparatus which concerns on embodiment of this invention. It is a figure which shows an example of the operation | movement which calculates electric power and a feature-value. It is a flowchart which shows an example of the apparatus discrimination | determination operation | movement which concerns on embodiment. It is a flowchart which shows an example of the feature-value calculation operation | movement which is a part of apparatus identification operation | movement which concerns on embodiment. It is a figure which shows an example of the data which concern on apparatus identification. It is a block diagram which shows an example of the hardware constitutions of the electric equipment discriminating device which concerns on embodiment of this invention.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. In the drawings, the same or equivalent parts are denoted by the same reference numerals.

(Embodiment)
FIG. 1 is a block diagram showing an example of the configuration of the electrical device discriminating apparatus according to the embodiment of the present invention. The electric device determination apparatus 100 is connected to a power line between the AC power supply 21 and the electric device 22. The electric device determination apparatus 100 includes a voltage measurement unit 1, a current measurement unit 2, a power calculation unit 3, a feature calculation unit 4, a device determination data storage unit 5, a device determination unit 6, an input unit 11, and an output unit 12. Further, the feature calculation unit 4 includes a current effective value calculation unit 41, a current peak calculation unit 42, a current kurtosis calculation unit 43, a crest factor calculation unit 44, a minimum power value calculation unit 45, a current deviation calculation unit 46, a current effective value. And a minimum power value ratio calculation unit 47 and a power factor calculation unit 48.

  The voltage measuring unit 1 is connected to a power line connected between the AC power source 21 and the electric device 22 and detects a potential. For example, the voltage measurement unit 1 includes a voltmeter and measures a voltage supplied to the electrical device 22.

  The current measuring unit 2 measures the current flowing through the power line. For example, the current measuring unit 2 includes an ammeter and measures the current supplied to the electrical device 22. Alternatively, the current measuring unit 2 detects the magnetic field generated by the current flowing through the power line with a power sensor or the like, and measures the current.

  The values detected by the voltage measurement unit 1 and the current measurement unit 2 may be input to each via the input unit 11. The input unit 11 receives an input of a value such as an effective voltage of the AC power supply. Specifically, the input unit 11 may be configured to allow numeric input with a numeric keypad, may be configured with a switch for instructing increase / decrease and a display device, or may be configured with a display and a touch panel.

The power calculation unit 3 calculates a power value based on the values measured by the voltage measurement unit 1 and the current measurement unit 2. Specifically, the instantaneous power value is calculated from the current voltage (instantaneous voltage value) and current (instantaneous current value) at the timing of current measurement, and the power value is calculated from the average value per voltage cycle. calculate.
(Instantaneous power value) = V (instantaneous voltage value) × I (instantaneous current value) × Δt

  Moreover, the power calculation unit 3 calculates apparent power and active power. The apparent power is obtained from the product of the effective value of voltage and the effective value of current. The active power is obtained from the product of the apparent power and the cosine (cos θ) of the phase difference.

  The electrical device determination apparatus 100 specifically measures and calculates voltage, current, and power by the following method.

  The voltage measuring unit 1 and the current measuring unit 2 measure the voltage and current for a predetermined period every predetermined time. For example, the voltage and current are measured for a period of 60 ms (milliseconds) at intervals of 36 ns (nanoseconds). The voltage data measured by the voltage measuring unit 1 is 111.3 V (volt), 112.3 V, 113.2 V, 114.2 V, 115.1 V, 116.0 V, 116.9 V,. Similarly, the current data measured by the current measuring unit 2 is 7.87 A (ampere), 7.94 A, 8.00 A, 8.07 A, 8.14 A, 8.20 A, 8.27 A,. is there.

  Based on the voltage data measured by the voltage measurement unit 1 and the current data measured by the current measurement unit 2, the power calculation unit 3 calculates the product of voltage data and current data at the same timing, and calculates instantaneous power. To do. Therefore, the power (instantaneous power) data calculated by the power calculating unit 3 is 875.6 W (watts), 891.1 W, 906.5 W, 921.8 W, 937.0 W, 952.1 W, 967.0 W, 981. .9W,...

  The feature calculation unit 4 calculates feature amounts, which are eight types (also referred to as eight dimensions) of electrical features, based on values measured and calculated by the voltage measurement unit 1, the current measurement unit 2, and the power calculation unit 3. . The eight types of electrical feature values are the current effective value, current peak, current kurtosis, current crest factor, minimum power value, current deviation, current effective value to minimum power value ratio, and power factor feature values. Say.

  The device determination data storage unit 5 includes feature amount data held for the target electrical device 22. The feature amount refers to eight types of electrical feature amounts calculated by the feature calculation unit 4.

  The device determination unit 6 compares the feature value calculated by the feature calculation unit 4 with the feature value data provided in the device determination data storage unit 5 to determine the type of the target electrical device 22. For example, the type of the electrical device having the smallest predetermined linear sum of the square of the difference between the feature value calculated by the feature calculation unit 4 and the feature amount provided by the device determination data storage unit 5 Judge as type. Further, the device discrimination unit 6 may discriminate using a discriminant tree, and may further discriminate one having the smallest predetermined linear sum of squares of differences after selection using the discriminant tree.

  The output unit 12 transmits the electrical feature amount calculated by the feature calculation unit 4 for the target electrical device 22 and the result determined by the device determination unit 6 to another display device or storage device. Alternatively, the output unit 12 may include a display device, and display electrical feature amounts, results, and the like.

  Hereinafter, the feature calculation unit 4 and the electrical feature amount calculated by the feature calculation unit 4 will be described in detail. First, the feature calculation unit 4 includes a current effective value calculation unit 41, a current peak calculation unit 42, a current kurtosis calculation unit 43, a crest factor calculation unit 44, a minimum power value calculation unit 45, a current deviation calculation unit 46, a current effective value. And a minimum power value ratio calculation unit 47 and a power factor calculation unit 48. FIG. 2 is a diagram illustrating an example of an operation for calculating the power and the feature amount.

  The current effective value calculation unit 41 calculates the current effective value. The effective current value is the square root of a value obtained by averaging the square of the instantaneous current in one cycle. As shown in FIG. 2A, a section (dotted line) where the actual current value (current waveform) takes a negative value is generated as a positive value (solid line), and the current effective value is calculated.

Specifically, the current effective value is 1 the current waveform {a_1, a_2, a_3, ··· , a_n} when the, squaring each point a_i of the current ^{({a_1 2, a_2 2,} a_3 2 , ..., a_n ² }), the square root of the result of calculating the average.

  The current peak calculation unit 42 calculates a current peak. The current peak is the difference between the maximum value of the current 1 waveform and the minimum value of the current 1 waveform. As shown in FIG. 2B, for the current peak, the difference between the maximum value (Max) of the current 1 waveform and the minimum value (min) of the current 1 waveform is calculated. The interval between adjacent pulses is the period T of the voltage waveform and corresponds to a current 1 waveform.

  The current kurtosis calculation unit 43 calculates the current kurtosis. The current kurtosis refers to a result of calculating the kurtosis in the probability distribution considering the waveform of one cycle from the minimum value of the current as the probability distribution.

  The crest factor calculation unit 44 calculates a current crest factor. The current crest factor is a value obtained by dividing the effective value of the current by the average value of one current waveform.

  The minimum power value calculation unit 45 calculates a minimum power value. The minimum power value refers to the minimum value of one waveform of power.

  The current deviation calculation unit 46 calculates a current deviation. Current deviation refers to the phase difference between a current waveform and a voltage waveform.

  A ratio calculation unit 47 between the current effective value and the minimum power value calculates a ratio between the current effective value and the minimum power value. The ratio between the current effective value and the minimum power value is a value obtained by dividing the minimum power value by the current effective value.

  The power factor calculation unit 48 calculates the power factor. The power factor is a value obtained by dividing active power by apparent power.

  Below, operation | movement of the electric equipment discrimination | determination apparatus 100 is demonstrated. FIG. 3 is a flowchart illustrating an example of the device determination operation according to the embodiment. The electric device discriminating apparatus 100 is connected between the AC power source 21 and the target electric device 22 with a power line.

  First, the voltage measurement unit 1 and the current measurement unit 2 of the electrical device determination apparatus 100 measure the voltage and current of the electrical device 22 through a power line supplied from the AC power supply 21 to the target electrical device 22 (step S11). . Then, electric power is calculated based on the results of the voltage and current measured by the voltage measuring unit 1 and the current measuring unit 2. Specifically, the instantaneous power value is calculated from the current voltage (instantaneous voltage value) and current (instantaneous current value) in accordance with the current measurement timing (step S12).

  Next, the feature calculation unit 4 calculates an electrical feature amount based on the voltage value and current value measured in step S11 and the power value calculated in step S12 (step S13). And the apparatus discrimination | determination part 6 compares the feature-value calculated by step S13 with the data of the feature-value provided in the apparatus determination data storage part 5, and discriminate | determines the kind of object electric equipment 22 (step S14). In addition, the device determination unit 6 sends the determined result to the output unit 12, and the output unit 12 displays the determination result on the display device (step S15) and ends the device determination operation.

  In step S14, the method of determining the type of the target electrical device 22 performed by the device determination unit 6 is, for example, the value of the feature amount calculated by the feature calculation unit 4 and the feature amount provided in the device determination data storage unit 5. There is a method of discriminating the type of the electric device having the smallest predetermined linear sum of the squares of the differences as the type of the target electric device 22. Moreover, you may determine the kind of the electric equipment 22 using a discrimination tree.

  FIG. 5 is a diagram illustrating an example of data relating to device discrimination. FIG. 5A is a table showing the identifier (ID) of the target electrical device 22. Although not shown, the device determination data storage unit 5 includes feature amount data held for the target device corresponding to the identifier table of FIG. 5A, and is managed in the database. FIG. 5B is an example of a discrimination tree.

  The device determination unit 6 starts determination for all the electric devices 22 in the device determination data storage unit 5 (START <L0 / R0>). As the condition, for example, it is assumed that a criterion for selecting at least one item among the eight types of electrical feature values calculated by the feature calculation unit 4 is provided. There may be one or more electrical feature quantities used for one condition. For example, when the value of the current effective value that is one of the feature amounts is equal to or greater than a predetermined value, it is set that the condition 1 is satisfied. The device discriminating unit 6 sorts those satisfying the condition 1 to L1 and those not satisfying the condition 1 to R1, and selects those satisfying the condition 1 (L1) using the condition 2 in the same manner. Then, screening is performed up to the condition n, and the electrical device 22 corresponding to the identifier (Ln) that satisfies the condition n is determined as the type of the target electrical device 22.

  Further, using the discrimination tree, the types of the target electrical devices 22 are narrowed down to a predetermined number or less, and then the feature amount values calculated by the feature calculation unit 4 and the feature amounts provided in the device determination data storage unit 5 The type of the target electrical device may be determined using a predetermined linear sum of the squares of the differences. It is possible to minimize the amount of calculation performed by the device determination unit 6 and shorten the processing time required for device determination. Further, it is also effective when the electrical features are similar, such as when the types of the same electrical equipment 22 are different and the manufacturers are different.

  FIG. 4 is a flowchart illustrating an example of a feature amount calculation operation that is a part of the device determination operation according to the embodiment. FIG. 5 shows a feature amount calculation step (step S13) in the flowchart showing an example of the device determination operation according to FIG.

  The current effective value calculation unit 41, the current peak calculation unit 42, the current kurtosis calculation unit 43, the crest factor calculation unit 44, the minimum power value calculation unit 45, the current deviation calculation unit 46, the current effective value provided in the feature calculation unit 4 The minimum power value ratio calculation unit 47 and the power factor calculation unit 48 calculate the electrical feature amount corresponding to each calculation unit.

  First, the current effective value calculation unit 41 calculates the current effective value based on the instantaneous current value (step S131). The current peak calculation unit 42 calculates a current peak from the difference between the maximum value of the current 1 waveform and the minimum value of the current 1 waveform (step S132). The current kurtosis calculation unit 43 calculates the current kurtosis from the kurtosis in the probability distribution based on the distribution of one waveform of the current (step S133). The crest factor calculation unit 44 divides the current effective value obtained in step S131 by the average value of one current waveform to calculate the current crest factor (step S134).

  Subsequently, the minimum power value calculation unit 45 calculates a minimum power value that is the minimum value of one waveform of power (step S135). Then, the current deviation calculation unit 46 calculates a current deviation from the phase difference between the current waveform and the voltage waveform (step S136). The ratio calculation unit 47 between the current effective value and the minimum power value calculates a ratio between the current effective value obtained in step S131 and the minimum power value obtained in step S135 (step S137). Finally, the power factor calculation unit 48 calculates a power factor that is a value obtained by dividing the active power by the apparent power (step S138), and ends the calculation of the eight types of electrical feature values in the feature calculation unit 4.

  As described above, according to the electric device discriminating apparatus, the electric device discriminating method, and the electric device discriminating program according to the present invention, it is possible to reduce the number of items to be measured and efficiently perform the calculation, thereby achieving a high-speed and high-precision device. Can be determined.

  In the present invention, device discrimination is performed using eight types of electrical feature quantities. The eight types of electrical feature values are the current effective value, current peak, current kurtosis, current crest factor, minimum power value, current deviation, current effective value to minimum power value ratio, and power factor feature values. Say.

  Necessary and sufficient discrimination can be performed by performing device discrimination using the above-described eight types of electrical feature quantities. The reason is that the accuracy of device discrimination in the present invention is higher when the device is discriminated using the present invention and when the device is discriminated with less than 8 items (features). In addition, there is a little difference in accuracy of device discrimination between the case of device discrimination using the present invention and the case of device discrimination using more than eight types of items (features). That is, by using the present invention, it is possible to facilitate the device discrimination operation while maintaining the accuracy, and it is possible to reduce the processing for calculating the feature amount and the discrimination, and to perform the processing in a short time.

  In addition, the measurement necessary for calculating the eight types of electrical feature values is a voltage value and a current value, and there are few measurement items and the measurement can be easily performed. In addition, equipment preparation for taking measurements can be minimized. Furthermore, the current crest factor, which is one of the electrical feature values, is calculated using the current effective value, which is the previously calculated feature value, and the current effective value, which is one of the electrical feature values, and the minimum power. The ratio of values is calculated using the current effective value and the minimum power value, which are the feature amounts calculated previously. By efficiently deriving the feature amount in this way, the amount of calculation for calculating the feature amount is reduced, and processing in a short time becomes possible.

  FIG. 6 is a block diagram illustrating an example of a hardware configuration of the electrical device determination apparatus according to the embodiment of the present invention. As shown in FIG. 6, the electrical device determination apparatus 100 includes a control unit 51, a main storage unit 52, an external storage unit 53, an operation unit 54, a display unit 55, an input / output unit 56, and a transmission / reception unit 57. The main storage unit 52, external storage unit 53, operation unit 54, display unit 55, input / output unit 56, and transmission / reception unit 57 are all connected to the control unit 51 via the internal bus 50.

  The control unit 51 includes a CPU (Central Processing Unit) and the like, and executes device determination processing according to a control program 59 stored in the external storage unit 23.

  The main storage unit 52 is configured by a RAM (Random-Access Memory) or the like, loads a control program 59 stored in the external storage unit 53, and is used as a work area of the control unit 51.

  The external storage unit 53 includes a non-volatile memory such as a flash memory, a hard disk, a DVD-RAM (Digital Versatile Disc Random-Access Memory), a DVD-RW (Digital Versatile Disc ReWritable), and the like. A program to be executed by the control unit 51 is stored in advance, and data stored by the program is supplied to the control unit 51 in accordance with an instruction from the control unit 51, and the data supplied from the control unit 51 is stored.

  The operation unit 54 includes a pointing device such as a keyboard, a switch, and a touch panel, and an interface device that connects the keyboard, the switch, the pointing device, and the like to the internal bus 50. The operation unit 54 receives an input of effective voltage or effective current.

  The display unit 55 includes a CRT (Cathode Ray Tube), an LCD (Liquid Crystal Display), or the like, and displays a screen for outputting the result of device discrimination. In addition, the feature amount of the corresponding electric device is displayed.

  The input / output unit 56 includes a serial interface or a parallel interface. A power line, a current sensor, a voltmeter, an ammeter, and the like are connected to the input / output unit 56.

  The transmission / reception unit 57 includes a wireless transceiver, a wireless modem or a network termination device, and a serial interface or a LAN (Local Area Network) interface connected thereto. The device determination data or the like is received via the transmission / reception unit 57, and the result of device determination is transmitted.

  The electric device discriminating device 100 includes a transmission / reception unit 57 when communicating the result of the discriminated electric device measured to an external device. The transmission / reception unit 57 includes a network termination device or a wireless communication device connected to the network, and a serial interface or a LAN (Local Area Network) interface connected thereto. The transmission / reception unit 57 is connected to an external terminal or a server via a network.

  The voltage measuring unit 1, the current measuring unit 2, the power calculating unit 3, the feature calculating unit 4, the device determining data storage unit 5, the device determining unit 6, the input unit 11, the output unit 12, and the electric device determining apparatus 100 shown in FIG. Current calculation unit 41, current peak calculation unit 42, current kurtosis calculation unit 43, crest factor calculation unit 44, minimum power value calculation unit 45, current deviation calculation unit 46, current effective value and minimum The processing of the power value ratio calculation unit 47 and the power factor calculation unit 48 is performed by the control program 59 by the control unit 51, the main storage unit 52, the external storage unit 53, the operation unit 54, the display unit 55, the input / output unit 56, and transmission / reception. It is executed by processing using the unit 57 or the like as a resource.

  In addition, the hardware configuration and the flowchart described above are merely examples, and can be arbitrarily changed and modified.

  The central part that performs the device discrimination process composed of the control unit 51, the main storage unit 52, the external storage unit 53, the operation unit 54, the display unit 55, the input / output unit 56, the transmission / reception unit 57, the internal bus 50, etc. It can be realized by using a normal computer system regardless of a dedicated system. For example, a computer program for executing the above operation is stored and distributed in a computer-readable recording medium (flexible disk, CD-ROM, DVD-ROM, etc.), and the computer program is installed in the computer. Thus, the electrical device determination apparatus 100 that performs the above-described processing may be configured. Alternatively, the electrical device determination apparatus 100 may be configured by storing the computer program in a storage device included in a server on a communication network such as the Internet and downloading it by a normal computer system.

  Further, when the functions of the electrical device discriminating apparatus 100 are realized by sharing an OS (operating system) and an application program, or by cooperation between the OS and the application program, only the application program portion is stored in a recording medium or a storage device. It may be stored.

  It is also possible to superimpose a computer program on a carrier wave and distribute it via a communication network. For example, the computer program may be posted on a bulletin board (BBS, Bulletin Board System) on a communication network, and the computer program distributed via the network. The computer program may be started and executed in the same manner as other application programs under the control of the OS, so that the above-described processing may be executed.

  A part or all of the above-described embodiment can be described as in the following supplementary notes, but is not limited thereto.

(Appendix 1)
Electrical measuring means for measuring the voltage and current supplied to the target electrical equipment;
A feature calculating means for calculating a feature quantity of electrical characteristics including the minimum power, which is the minimum value of one waveform of power, from the measured voltage and current;
Discriminating means for discriminating the type of the target electrical device based on the characteristic amount of the electrical characteristic including the minimum power;
An electrical apparatus discriminating apparatus comprising:

(Appendix 2)
The feature calculation means calculates a current effective value, a current peak, a current kurtosis, a crest factor, a minimum power, a current deviation, a ratio between a current effective value and a minimum power value, and a power factor.
The determining means is based on the current effective value, current peak, current kurtosis, crest factor, minimum power value, current deviation, current effective value to minimum power value ratio, and power factor calculated by the feature calculating means. Determining the type of the target electrical device,
The electrical apparatus discriminating apparatus according to Supplementary Note 1, wherein

(Appendix 3)
Device determination data that holds the current effective value, current peak, current kurtosis, crest factor, minimum power value, current deviation, current effective value to minimum power value ratio, and power factor for each type of electrical equipment as features. A storage means,
The determination means determines the type of the target electric device as compared with the device determination data held in the device determination data storage means.
The electrical apparatus discriminating apparatus according to appendix 1 or 2, characterized in that:

(Appendix 4)
An electrical device identification method performed by an apparatus for determining the type of electrical device from electrical characteristics,
An electrical measurement step for measuring the voltage and current supplied to the target electrical device;
A feature calculation step of calculating a feature quantity of electrical characteristics including the minimum power, which is the minimum value of one waveform of power, from the measured voltage and current;
A determination step of determining a type of the target electric device based on a feature amount of an electric characteristic including the minimum power;
An electrical device discrimination method comprising:

(Appendix 5)
The feature calculating step calculates a current effective value, a current peak, a current kurtosis, a crest factor, a minimum power, a current deviation, a ratio between a current effective value and a minimum power value, and a power factor,
The determination step is based on the current effective value, current peak, current kurtosis, crest factor, minimum power value, current deviation, current effective value to minimum power value ratio, and power factor calculated in the feature calculation step. Determining the type of the target electrical device,
The electrical device identification method according to appendix 4, characterized in that:

(Appendix 6)
Device determination that refers to current effective value, current peak, current kurtosis, crest factor, minimum power value, current deviation, current effective value to minimum power value ratio, and power factor as device determination data for each type of electrical device A data reference step,
The determination means determines the type of the target electric device as compared with the device determination data.
The electrical device identification method according to appendix 4 or 5, characterized in that:

(Appendix 7)
On the computer,
An electrical measurement step for measuring the voltage and current supplied to the target electrical device;
A feature calculation step of calculating a feature quantity of electrical characteristics including the minimum power, which is the minimum value of one waveform of power, from the measured voltage and current;
A determination step of determining a type of the target electric device based on a feature amount of an electric characteristic including the minimum power;
An electrical equipment discrimination program characterized by causing

  The present invention can be applied to uses such as realization of plug-and-play of electrical equipment by incorporating and utilizing the electrical equipment discriminating apparatus in an energy management system.

DESCRIPTION OF SYMBOLS 1 Voltage measurement part 2 Current measurement part 3 Electric power calculation part 4 Feature calculation part 5 Equipment determination data 6 Equipment discrimination | determination part 11 Input part 12 Output part 21 AC power source 22 Electrical equipment 41 Current effective value calculation part 42 Current peak calculation part 43 Current peak Degree calculation unit 44 Crest factor calculation unit 45 Minimum power value calculation unit 46 Current deviation calculation unit 47 Ratio calculation unit between current effective value and minimum power value 48 Power factor calculation unit 50 Internal bus 51 Control unit 52 Main storage unit 53 External storage unit 54 Operation Unit 55 Display Unit 56 Input / Output Unit 57 Transmission / Reception Unit 59 Control Program 100 Electric Device Discrimination Device

Claims (7)

Electrical measuring means for measuring the voltage and current supplied to the target electrical equipment;
Feature calculation means for calculating a feature quantity of electrical characteristics including the minimum power, which is the minimum value of one waveform of power corresponding to one cycle of the AC power supply voltage, from the measured voltage and current;
Discriminating means for discriminating the type of the target electrical device based on the characteristic amount of the electrical characteristic including the minimum power;
Equipped with a,
The feature calculation means calculates a current effective value, a current peak, a current kurtosis, a crest factor, a minimum power, a current deviation, a ratio between a current effective value and a minimum power value, and a power factor.
The determining means is based on the current effective value, current peak, current kurtosis, crest factor, minimum power value, current deviation, current effective value to minimum power value ratio, and power factor calculated by the feature calculating means. Determining the type of the target electrical device,
An electrical device discriminating apparatus characterized by the above. Device determination data that holds the current effective value, current peak, current kurtosis, crest factor, minimum power value, current deviation, current effective value to minimum power value ratio, and power factor for each type of electrical equipment as features. A storage means,
The determination means determines the type of the target electric device as compared with the device determination data held in the device determination data storage means.
The electrical apparatus discriminating apparatus according to claim 1 .   Electrical measuring means for measuring the voltage and current supplied to the target electrical equipment;
  A feature calculation means for calculating a feature quantity of electrical characteristics including the minimum power, which is the minimum value of one waveform of power corresponding to one cycle of the AC power supply voltage, from the measured voltage and current;
  Discriminating means for discriminating the type of the target electrical device based on the characteristic amount of the electrical characteristic including the minimum power;
  Device determination data that holds the current effective value, current peak, current kurtosis, crest factor, minimum power value, current deviation, current effective value to minimum power value ratio, and power factor for each type of electrical equipment as features. A storage means,
  The determination means determines the type of the target electric device as compared with the device determination data held in the device determination data storage means.
  An electrical device discriminating apparatus characterized by the above. An electrical device identification method performed by an apparatus for determining the type of electrical device from electrical characteristics,
An electrical measurement step for measuring the voltage and current supplied to the target electrical device;
A feature calculation step of calculating a feature value of an electrical characteristic including the minimum power, which is the minimum value of one waveform of power corresponding to one cycle of the AC power supply voltage, from the measured voltage and current;
A determination step of determining a type of the target electric device based on a feature amount of an electric characteristic including the minimum power;
Equipped with a,
In the feature calculation step, current effective value, current peak, current kurtosis, crest factor, minimum power, current deviation, ratio of current effective value and minimum power value, and power factor are calculated,
The determination step is based on the current effective value, current peak, current kurtosis, crest factor, minimum power value, current deviation, current effective value to minimum power value ratio, and power factor calculated in the feature calculation step. Determining the type of the target electrical device,
A method for discriminating electrical equipment. Device determination that refers to current effective value, current peak, current kurtosis, crest factor, minimum power value, current deviation, current effective value to minimum power value ratio, and power factor as device determination data for each type of electrical device A data reference step,
In the determination step, the type of the target electrical device is determined by comparison with the device determination data.
The method of distinguishing electrical equipment according to claim 4 .   An electrical device identification method performed by an apparatus for determining the type of electrical device from electrical characteristics,
  An electrical measurement step for measuring the voltage and current supplied to the target electrical device;
  A feature calculation step of calculating a feature value of an electrical characteristic including the minimum power, which is the minimum value of one waveform of power corresponding to one cycle of the AC power supply voltage, from the measured voltage and current;
  A determination step of determining a type of the target electric device based on a feature amount of an electric characteristic including the minimum power;
  Device determination that refers to current effective value, current peak, current kurtosis, crest factor, minimum power value, current deviation, current effective value to minimum power value ratio, and power factor as device determination data for each type of electrical device A data reference step,
  In the determination step, the type of the target electrical device is determined by comparison with the device determination data.
  A method for discriminating electrical equipment. On the computer,
An electrical measurement step for measuring the voltage and current supplied to the target electrical device;
A feature calculation step of calculating a feature value of an electrical characteristic including the minimum power, which is the minimum value of one waveform of power corresponding to one cycle of the AC power supply voltage, from the measured voltage and current;
A determination step of determining a type of the target electric device based on a feature amount of an electric characteristic including the minimum power;
Was executed,
In the feature calculation step, current effective value, current peak, current kurtosis, crest factor, minimum power, current deviation, ratio of current effective value and minimum power value, and power factor are calculated,
The determination step is based on the current effective value, current peak, current kurtosis, crest factor, minimum power value, current deviation, current effective value to minimum power value ratio, and power factor calculated in the feature calculation step. Determining the type of the target electrical device,
An electrical equipment discrimination program characterized by the above.

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