JP2012098135A - Apparatus power consumption measuring device, apparatus power consumption measuring program and apparatus power consumption measuring method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an apparatus power consumption measuring device or the like capable of measuring power consumption for each apparatus with low cost.SOLUTION: An apparatus power consumption measuring device 1 obtains a total amount of power consumption of a plurality of apparatuses 2 from a sensor 33 disposed on a power line 6. The apparatus power consumption measuring device 1 further obtains an operational state of each of the plurality of apparatuses 2 through a communication line while obtaining the total amount of the power consumption thereof. The apparatus power consumption measuring device 1 furthermore calculates an approximate value of the power consumption of the each of the apparatuses 2 in an operating state thereof and proportionally divides the obtained total amount of the power consumption to the each of the apparatuses 2 according to the calculated approximate value.

Description

  The present invention relates to a device power consumption measurement device, a device power consumption measurement program, and a device power consumption measurement method.

  In order to realize energy saving in a building, it is important to individually grasp the amount of power used by the equipment in the building.

  Patent Documents 1 and 2 disclose a system in which a sensor for measuring power usage is arranged for each device in a building and the power consumption is displayed for each device.

JP 2006-185318 A JP 2007-033305 A

  In the systems described in Patent Literatures 1 and 2, since it is necessary to arrange a sensor for each device in the building, there is a problem that the cost associated with the sensor arrangement increases.

  The present invention has been made in view of the above circumstances, and provides a device-use power measurement device, a device-use power measurement program, and a device-use power measurement method capable of measuring power use for each device at low cost. For the purpose.

In order to achieve the above object, a device power consumption measuring apparatus according to the first aspect of the present invention includes:
A total power measuring means for measuring the total amount of power used by a plurality of devices from a sensor provided on the power line;
For each of the plurality of devices, information indicating the operation state of the device, and an approximate value of power used when the device is operated in the operation state, and an approximate power storage unit for each operation state for storing in association with each other,
While the total power measuring means is measuring the total amount of power used, an operating state detecting means for detecting an operating state of each of the plurality of devices,
An approximate value of power used associated with information indicating the operating status of each device detected by the operating status detection means is acquired from the approximate power storage means for each operating status, and an approximate value of power used for each acquired device is acquired. And, based on the total amount of power consumption measured by the total power measurement means, device power detection means for detecting the power consumption of each of the devices,
It is characterized by providing.

In order to achieve the above object, a device usage power measurement program according to the second aspect of the present invention provides:
Computer
A total power measuring means for measuring the total amount of power used by a plurality of devices from a sensor provided on the power line;
For each of the plurality of devices, information indicating an operation state of the device and an approximate value of power used when the device is operated in the operation state are stored in association with an approximate power storage unit by operation state,
While the total power measuring unit measures the total amount of power used, an operating state detecting unit that detects an operating state of each of the plurality of devices,
An approximate value of power used associated with information indicating the operating status of each device detected by the operating status detection means is acquired from the approximate power storage means for each operating status, and an approximate value of power used for each acquired device is acquired. And, based on the total amount of power consumption measured by the total power measurement means, device power detection means for detecting the power consumption of each of the devices,
It is made to function as.

In order to achieve the above object, a method for measuring power used by a device according to the third aspect of the present invention includes:
A total power measuring step for measuring the total amount of power used by a plurality of devices from sensors provided on the power line; and
While measuring the total amount of power used in the total power measurement step, an operation state detection step of detecting the operation state of each of the plurality of devices,
For each of the plurality of devices, the information indicating the operation state of the device and the device in the operation state when the device is operated in the operation state detected in the operation state detection step. Obtained from the estimated power storage means for each operating state that stores the estimated value of the used power in association with each other, and the obtained estimated value of the used power of each device and the used power measured in the total power measuring step A device power detection step for detecting the amount of power used by each of the devices based on the total amount,
It is characterized by having.

  According to the present invention, the power consumption of a plurality of devices can be individually measured with one sensor. Therefore, it is possible to measure the power used for each device at a low cost.

BRIEF DESCRIPTION OF THE DRAWINGS It is a figure which shows the structure of the apparatus electric power consumption measuring device which concerns on the 1st Embodiment of this invention, and its periphery. It is a block diagram which shows the function structure of the apparatus electric power consumption measuring apparatus which concerns on embodiment of this invention. It is a figure which shows the time change of the electric power which the electric power measurement part measured. It is a figure which shows the example of the information memorize | stored in the estimated electric power memory | storage part according to an operating condition. It is a flowchart for demonstrating apparatus electric power display processing. It is the figure which showed the example of the screen displayed on the display part of an apparatus usage power measuring device. It is a figure which shows the structure of the apparatus electric power consumption measuring device which concerns on the 2nd Embodiment of this invention, and its periphery.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. In addition, this invention is not limited by the following embodiment and drawing. It goes without saying that the following embodiments and drawings can be modified without changing the gist of the present invention. Moreover, the same code | symbol is attached | subjected to the same or an equivalent part in a figure.

<< First Embodiment >>
First, with reference to FIG. 1, the apparatus usage power measuring device 1 which concerns on the 1st Embodiment of this invention is demonstrated. The device power consumption measuring apparatus 1 according to the first embodiment is a device that estimates the power consumption for each device 2 from the total power consumption of a plurality of devices 2 installed in a specific building.

  Note that the plurality of devices 2 to be used for measuring the amount of power used are connected to the power source 4 via the power line 6, and power is supplied from the power source 4 via the power line 6. Specifically, the power line 6 connected to the power source 4 is connected to the distribution board 3. And after branching through the main breaker 31 in the distribution board 3, it branches into two, and after each exiting the distribution board 3 via the sub breaker 32, it connects with the some apparatus 2. FIG. In the present embodiment, the power line 6 connected to the power source 4 and before branching is referred to as a trunk line, and the power line 6 after branching is referred to as a branch line. A sensor 33 is arranged on the main line of the power line 6. The sensor 33 includes an ammeter that measures the current flowing through the power line 6, a voltmeter that measures the voltage of the power line 6, and the like, and the output end of the sensor 33 is connected to the device-use power measuring apparatus 1. .

  The plurality of devices 2 are connected to the device control controller 5 and the device power consumption measuring device 1 through communication lines (whether wired or wireless) such as a LAN (Local Area Network) cable. The device controller 5 is a computer for controlling each device 2 and includes a CPU (Central Processing Unit), a ROM (Read Only Memory), a RAM (Random Access Memory), a hard drive, a communication interface, a touch panel, and the like. It is prepared for. The device controller 5 has a function of individually controlling each device 2 by transmitting a control signal based on an instruction input from the user to each device 2 via a communication line. Furthermore, the device controller 5 has a function of grasping (displaying) the operation state of each device 2 by receiving a control signal from each device 2 via the communication line. In addition, the control information of the device 2 transmitted / received between the device controller 5 and each device 2 in this way is also transmitted to the device power consumption measuring apparatus 1 via the communication line.

  Next, the configuration of the device usage power measuring device 1 will be described. The device power consumption measuring apparatus 1 physically includes a CPU, a ROM that stores an operation program, a RAM that is a work area, a hard disk drive that is a storage area, an RTC (Real Time Clock), a timer, a communication interface, and the like. It is prepared for.

  As shown in FIG. 2, the device-use power measuring device 1 functionally includes a power measurement unit 11, an operation state detection unit 12, an approximate power storage unit 13 for each operation state, a device power detection unit 14, A display control unit 15 and a display unit 16 are provided.

  Among these units, the power measurement unit 11, the operation state detection unit 12, the device power detection unit 14, and the display control unit 15 are functionally realized by the CPU executing an operation program stored in the ROM. The The approximate power storage unit 13 by operation state is information or a database stored in a RAM or a hard disk drive.

  The power measuring unit 11 is connected to a sensor 33 that measures current and voltage flowing from the power source 4 to the power line 6 (main line), and based on the output value of the sensor 33, the total amount of power that the power source 4 supplies to each device 2 is calculated. measure. Specifically, the power measurement unit 11 may measure the power by multiplying the current output from the sensor 33 by the voltage value. The power measuring unit 11 then displays information indicating the amount of power obtained by integrating the measured power within the predetermined time (that is, the total amount of power used by each device 2) at predetermined time intervals (for example, every minute). Output to the device power detection unit 14.

The driving | running state detection part 12 receives the control signal which controls each apparatus 2 via a communication line. The driving state detection unit 12 analyzes the received control signal every predetermined time (for example, every minute) to detect (discriminate) the driving state of each device 2. And the driving | running state detection part 12 outputs the driving | running state identification information which identifies the driving | running state of the detected apparatus 2 to the apparatus electric power detection part 14. FIG.
The operation state detection unit 12 may detect the operation state by receiving control information of each device 2 from the device controller 5.

  Note that the power measurement unit 11 and the operation state detection unit 12 are synchronized with each other, the timing at which the power measurement unit 11 outputs information indicating the amount of power to the device power detection unit 14, and the operation state detection unit 12 is the device. The timing at which the driving state identification information is output to the power detection unit 14 is the same.

  Here, the timing at which the power measurement unit 11 and the operation state detection unit 12 output information to the device power detection unit 14 will be described more specifically with reference to FIG. 3. FIG. 3 is a diagram illustrating a temporal change in power measured by the power measuring unit 11.

  The power measurement unit 11 outputs the amount of power obtained by integrating the power within the latest time Δt to the device power detection unit 14 every predetermined time Δt. For example, when the amount of power is output at time t1, the next power amount output timing is time t1 + Δt, and at time t1 + Δt, the power measuring unit 11 corresponds to the area of the hatched portion in FIG. The amount of power is output to the device power detection unit 14. Further, at this time t1 + Δt, the operation state detection unit 12 detects the operation state of each device 2 and outputs it to the device power detection unit 14.

  Returning to FIG. 2, the approximate power storage unit 13 for each operation state associates the operation state identification information for identifying the operation state of the device 2 with the approximate value of the power used when the device 2 is operated in the operation state. Remember. Note that, due to the environment around the device 2 (for example, temperature, humidity), etc., the power used is actually not constant even in the same operation state. Therefore, the value of the used power stored in the estimated power storage unit 13 for each operating state is an approximate value that serves as a guide only.

  In addition, the value of the approximate power stored in the approximate power storage unit 13 for each operating state may be the value of the power measured by the power measurement unit 11 when only one device 2 is operated. It may be input directly by an operator with reference to a manual or the like.

  Here, the specific example of the information memorize | stored in the estimated electric power memory | storage part 13 classified by driving | running state in case the apparatus 2 is an air conditioner is shown to FIG. 4 (A). In this case, the operation state identification power storage unit 13 stores operation state identification information including a model name, a mode, and a set temperature, and an approximate value of power used in association with each other. For example, it can be seen from the information shown in the top entry of this figure that the power used when the air conditioner is operated in the air blowing mode is approximately 90 W.

  Moreover, the specific example of the information memorize | stored in the estimated electric power memory | storage part 13 classified by driving | running state in case the apparatus 2 is illumination is shown to FIG. 4 (B). This illumination is illumination with a dimming function. In this case, the operation state identification power storage unit 13 stores the operation state identification information including the model name, information indicating the on / off state, and the dimming state, and the approximate value of the power used in association with each other. Is done. For example, it can be seen from the information shown in the top entry of this figure that the power used when the illumination is turned on with 100% dimming is approximately 100 W.

  Moreover, the specific example of the information memorize | stored in the estimated electric power storage part 13 according to the driving | running state in case the apparatus 2 is oven is shown in FIG.4 (C). In this case, the operation state approximate power storage unit 13 stores operation state identification information including the model name, information indicating the ON / OFF state, and the oven temperature, and an approximate value of power used in association with each other. The For example, it can be seen from the information shown in the top entry of this figure that the power used when the oven is used at 60 ° C. is approximately 400 W.

  Returning to FIG. 2, the device power detection unit 14 estimates the total amount of power used by each device 2 measured by the power measurement unit 11, the operation state of each device 2 detected by the operation state detection unit 12, and the estimated operation state. Based on the information stored in the power storage unit 13, the amount of power used by each device 2 is obtained. Details of processing performed by the device power detection unit 14 will be described later.

  The display control unit 15 creates display data for a screen that displays the power consumption for each device 2 detected by the device power detection unit 14 and causes the display unit 16 to display the screen. The display unit 16 includes a liquid crystal panel or the like, and displays various types of information under instructions from the display control unit 15.

  Next, the operation of the device usage power measuring device 1 will be described. FIG. 5 is a flowchart of the device usage power display process executed by the device power detection unit 14 and the display control unit 15 of the device usage power measuring apparatus 1.

  For example, when receiving an instruction input to start processing from the user, the device power detection unit 14 receives each device 2 from the power measurement unit 11 and the operation state detection unit 12 within a predetermined time (for example, 1 minute). It is determined whether or not the total amount of power and the operation state identification information for identifying the operation state of each device 2 within the predetermined time have been received (step S101; Yes). When it is determined that it has not been received (step S101; No), the device power detection unit 14 waits for a predetermined time (step S102) and repeats the determination process of step S101 again.

  When it is determined that it has been received (step S101; Yes), the device power detection unit 14 acquires an approximate value of power used when each device 2 is operated in the operation state indicated by the received operation state identification information for each device 2. (Step S103). Specifically, the device power detection unit 14 may acquire an approximate value of power used associated with the received operation state identification information from the operation state approximate power storage unit 13.

  Subsequently, the device power detection unit 14 obtains a ratio between the devices 2 of the approximate value of the used power acquired for each device 2 (step S104).

  And the apparatus electric power detection part 14 detects the electric energy divided by the ratio which calculated | required the total electric energy acquired by step S101 as an electric energy of each apparatus 2 (step S105).

For example, consider a case where the total amount of power is W _ALL and the ratio of the approximate values of power used by the devices 2 _A , 2 _B and 2 _C is calculated as “R _A : R _B : R _C ”. In this case, the device power detection unit 14 can obtain the power consumption amounts W _A , W _B , and W _C of the devices 2 _A , 2 _B , and 2 _C as shown in the following equation.
W _A = W _ALL. (R _A / R _A + R _B + R _C )
W _B = W _ALL · (R _B / R _A + R _B + R _C )
W _C = W _ALL · (R _C / R _A + R _B + R _C )

  Subsequently, the display control unit 15 creates display data for a screen that displays the power amount of each device 2 detected by the device power detection unit 14 (step S106), and causes the display unit 16 to display the screen (step S107). ). In addition, when the image for the last time is already displayed on the display part 16, the display control part 15 updates and displays a screen.

  Thereafter, the process returns to step S101, and the above-described series of processes (steps S103 to S107) are performed each time information is received from the power measurement unit 11 and the operation state detection unit 12 (step S101; Yes). As a result, the latest power consumption for each device 2 continues to be displayed on the display unit 16.

  Next, the above-described device power consumption display process will be further described with a specific example. In addition, the information shown in FIG. 4 shall be memorize | stored in the estimated electric power memory | storage part 13 according to an operating state previously.

  The device power consumption display process is started, the device power detection unit 14 receives information indicating the total power amount 3000 W · s from the power measurement unit 11, and sets the air conditioner from the operation state detection unit 12 to the cooling mode at the same timing. Operation state identification information indicating that the operation was performed at a temperature of 26 ° C., operation state identification information indicating that the lighting was turned on with 100% dimming, and operation state identification indicating that the oven was used at 100 ° C. Consider a case where information is received (FIG. 5, step S101; Yes).

  In this case, the device power detection unit 14 determines from the information stored in the estimated power storage unit 13 for each operating state shown in FIG. 4 that the estimated power consumption of the air conditioner is 300 W, the estimated power consumption of the lighting is 100 W, and An approximate value 600W of electric power used by the oven is acquired (step S103).

  Therefore, the ratio of the electric power used by the oven, lighting, and air conditioner is obtained as “3: 1: 6” (step S104). Accordingly, the device power detection unit 14 apportions the total power amount of 3000 W · s based on this ratio, and obtains the power consumption amounts of the oven, lighting, and air conditioner as 900 W · s, 300 W · s, and 1800 W · s, respectively. (Step S105).

  And the display control part 15 produces the display data of the screen as shown in FIG. 6 which displays the calculated | required electric power for every apparatus 2 with a graph (step S106), and displays it on the display part 16 (step S107).

  As explained in detail above, according to the first embodiment, it is possible to individually measure the power consumption of each device 2 connected to the branch line by simply measuring the power amount of the trunk portion of the power line 6. It becomes. Therefore, it is not necessary to provide a power measurement sensor or the like for each device 2, and power consumption can be measured and displayed for each device 2 at a low cost.

<< Second Embodiment >>
Subsequently, a second embodiment of the present invention will be described.

  As shown in FIG. 7, the device usage power measuring apparatus 1 according to the second embodiment is not provided with the display control unit 15 and the display unit 16, and is newly provided with a detection result transmission unit 17. Different from form.

  The detection result transmission unit 17 creates display data for a screen that displays the amount of power used for each device 2 detected by the device power detection unit 14. And the detection result transmission part 17 transmits the display data produced to the apparatus control controller 5 via the communication line based on standards, such as RS485. The device controller 5 displays the display data received from the detection result transmission unit 17 on a screen such as a touch panel.

  Thus, in the second embodiment, the power consumption for each device 2 is displayed on the device controller 5. Accordingly, the user can control such as reducing the output of the device 2 from the device controller 5 when there is a device 2 or the like that uses extra power by looking at this display. It is possible to further improve the convenience of the.

  The present invention is not limited to the above-described embodiments, and various modifications can be made without departing from the scope of the present invention.

  For example, in the second embodiment, the detection result transmission unit 17 of the device power consumption measuring apparatus 1 transmits display data to the device controller 5, but the user's mobile phone, PC (Personal Compute), PDA (Personal Digital) Display data may be transmitted to an external device such as an assistant. In addition, the detection result transmission unit 17 transmits information indicating the power consumption for each device 2 detected by the device power detection unit 14 directly to the external device, and displays display data for displaying the information on the external device side. You may create and display it.

  Further, for example, by applying an operation program that defines the operation of the apparatus power consumption measuring apparatus 1 according to the present invention to an existing personal computer, information terminal apparatus, or the like, the personal computer or the like can be used to measure the apparatus power consumption according to the present invention. It is also possible to function as the device 1.

  Further, the distribution method of such a program is arbitrary. For example, the program can be read by a computer such as a CD-ROM (Compact Disk Read-Only Memory), a DVD (Digital Versatile Disk), an MO (Magneto Optical Disk), or a memory card. It may be distributed by storing in a recording medium, or distributed via a communication network such as the Internet.

DESCRIPTION OF SYMBOLS 1 Device use electric power measuring apparatus 11 Electric power measurement part 12 Operation state detection part 13 Approximate electric power memory | storage part 14 according to operation state Equipment power detection part 15 Display control part 16 Display part 17 Detection result transmission part 2 Equipment 3 Distribution board 31 Main breaker 32 Child breaker 33 Sensor 4 Power supply 5 Device controller 6 Power line

Claims (6)

A total power measuring means for measuring the total amount of power used by a plurality of devices from a sensor provided on the power line;
For each of the plurality of devices, information indicating the operation state of the device, and an approximate value of power used when the device is operated in the operation state, and an approximate power storage unit for each operation state for storing in association with each other,
While the total power measuring means is measuring the total amount of power used, an operating state detecting means for detecting an operating state of each of the plurality of devices,
An approximate value of power used associated with information indicating the operating status of each device detected by the operating status detection means is acquired from the approximate power storage means for each operating status, and an approximate value of power used for each acquired device is acquired. And, based on the total amount of power consumption measured by the total power measurement means, device power detection means for detecting the power consumption of each of the devices,
A device-use power measuring device comprising: The device power detection means is
The amount of power obtained by apportioning the total amount of used power measured by the total power measuring unit according to the ratio of the approximate value of the used power of each device when each device is operated in the operating state detected by the operating state detecting unit. Detect as the amount of power of each device,
The apparatus power consumption measuring apparatus according to claim 1. Further comprising display means for displaying, for each device, the amount of power used by each device detected by the device power detection means,
The apparatus power consumption measuring apparatus according to claim 1 or 2, characterized in that The apparatus further comprises detection result transmitting means for transmitting data for displaying the power usage amount of each of the devices detected by the device power detecting means for each device to an external device via a communication network.
The apparatus power consumption measuring apparatus according to any one of claims 1 to 3, wherein Computer
A total power measuring means for measuring the total amount of power used by a plurality of devices from a sensor provided on the power line;
For each of the plurality of devices, information indicating an operation state of the device and an approximate value of power used when the device is operated in the operation state are stored in association with an approximate power storage unit by operation state,
While the total power measuring unit measures the total amount of power used, an operating state detecting unit that detects an operating state of each of the plurality of devices,
An approximate value of power used associated with information indicating the operating status of each device detected by the operating status detection means is acquired from the approximate power storage means for each operating status, and an approximate value of power used for each acquired device is acquired. And, based on the total amount of power consumption measured by the total power measurement means, device power detection means for detecting the power consumption of each of the devices,
Device power consumption measurement program characterized by functioning as A total power measuring step for measuring the total amount of power used by a plurality of devices from sensors provided on the power line; and
While measuring the total amount of power used in the total power measurement step, an operation state detection step of detecting the operation state of each of the plurality of devices,
For each of the plurality of devices, the information indicating the operation state of the device and the device in the operation state when the device is operated in the operation state detected in the operation state detection step. Obtained from the estimated power storage means for each operating state that stores the estimated value of the used power in association with each other, and the obtained estimated value of the used power of each device and the used power measured in the total power measuring step A device power detection step for detecting the amount of power used by each of the devices based on the total amount,
An apparatus power consumption measuring method characterized by comprising:

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