JP2011010436A - Energy-saving monitoring system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve convenience by enabling power consumption apparatuses to be monitored, even if a plug on the apparatus side is plugged in a plug socket within a power tap, without a fixed relation between a power tap and the plug on the apparatus side for each apparatus.SOLUTION: On the apparatus side, IC tags 9a-9d are built in plugs 1a-1d on the apparatus side, and IC tag readers 11a-11d, current detectors 13a-13d, switches 15a-15d, and a programable controller 17 are built in a power tap 5 to which these plugs 1a-1d on the apparatus side are connected. A computer 10 for monitoring of energy-saving monitors saving energy from the situation of power consumption of individual apparatus or the apparatus as a whole, based on the data transmitted from the programable controller 17 within the power tap 5.

Description

  The present invention relates to an energy saving monitoring system that can contribute to energy saving diagnosis, energy saving measures, and the like by monitoring the amount of power used in various loads installed in a plurality of dispersed areas from the viewpoint of energy saving. .

  In recent years, not only in factories but also in general households, energy saving has been promoted such as saving power without wasting power. For example, in a factory, various energy savings such as turning off lights in the factory all at once during the daytime breaks of workers are implemented. Under such an energy saving situation, monitoring the current power consumption and the like is a basic energy saving measure. In addition, a so-called energy conservation law has been established as a law concerning the rational use of energy. Under such circumstances, on the electric power consumer side, it is desired to realize a system that can easily monitor a detailed amount of electric power used. As an example of this system, for example, in order to monitor the amount of power used per unit time for various loads in various places in the factory, a detector is provided for each outlet connected to the device, and the amount of power used is determined by a LAN (local area network). A system for batch monitoring is also considered (see Patent Document 1).

  In the system of this patent document 1, each device (slave) side plug has a terminal built in a connection outlet, and a commercial power line between each terminal and the controller (master) is used as a signal line via this signal line. Data communication regarding power usage is performed, and the controller monitors the amount of power used in the device on the controller screen, and can display a warning or a warning so as not to exceed a certain amount of power used.

  For example, in Patent Document 1, each device is identified by placing an ID in the communication data, and the amount of power used by each device and the amount of power used by the device as a whole are displayed on the screen. There has been disclosed a technique in which when the amount of electric power approaches the maximum amount of electric power that is permitted in a power usage contract with an electric power company, the remaining usable electric energy can be displayed or a voice warning can be given.

JP 09-84146 A

  However, in the system of Patent Document 1, the terminal built-in outlet is determined for each device, that is, for each device such as a lighting, a microwave oven, a refrigerator, and an air conditioner. In other words, the conventional system requires a unique individual relationship between the plug and the outlet, which is difficult to perform energy saving monitoring.

  Therefore, the problem to be solved by the present invention is to enable easy and efficient energy saving monitoring without being restricted by the above-described relationship between the plug and the outlet.

  The energy saving monitoring system according to the present invention has a load side to be monitored for energy saving and an energy saving monitoring side for monitoring the energy saving state of this load side. On the load side, a plug connected to the load and this plug is inserted. A power strip having a plurality of plug insertion ports, wherein the plug incorporates an IC tag into which load data is written, and the power strip communicates with the IC tag corresponding to each plug insertion port. An IC tag reader for obtaining load data, current detection means for detecting a current supplied to the plug inserted into the plug insertion port, communication data between the IC tag and the IC tag reader, A programmable controller unit that processes current detection data from the current detection means and transmits the processed current detection data to the energy saving monitoring side, and the energy saving monitoring side includes the programmer Based on the data obtained by the communication with the Le controller unit is designed to monitor the visual display or sound reporting the energy saving status in the entire load individual or the load, and is characterized in that.

  In the present invention, unlike the conventional system, the plug outlet of the power strip and the plug are not in an unambiguous relationship determined for each load, and no matter which plug is inserted and connected to which plug outlet, The power usage of the plug-compatible load can be monitored visually or by voice.

  Preferably, the energy saving status is displayed on a computer screen.

  Preferably, the load-side power tap and the energy-saving monitoring computer are capable of power line communication.

  Preferably, the power tap and each plug of the energy saving monitoring computer are connected to a wall outlet, and power line carrier communication is performed via a power line between the wall outlets.

  According to the present invention, there is no unambiguous individual relationship between the plug on the load side and the outlet, and regardless of what kind of plug is connected to the outlet, the power consumption at the load or the power consumption at the full load is monitored. By doing so, energy saving can be implemented more easily and efficiently.

FIG. 1 is a diagram showing a schematic configuration of a device-side plug, a power strip, and a wall-embedded outlet used in an energy saving monitoring system according to an embodiment of the present invention. FIG. 2 is a diagram showing an internal circuit configuration of the power tap of FIG. FIG. 3 is a detailed block diagram of the programmable controller unit in the power tap of FIG. FIG. 4 is a schematic block diagram of an energy saving monitoring computer. FIG. 5 is a diagram showing a connection wiring configuration of a plurality of power taps, a plurality of wall outlets, and an energy saving monitoring computer. FIG. 6 is a diagram showing wiring between a power strip and a wall outlet in the factory. FIG. 7 is a diagram showing an example of a current monitoring screen of a device connected to one of the plurality of power strips shown in FIG. FIG. 8 is a diagram showing an example of an energy saving monitoring screen in the whole factory shown in FIG.

  Hereinafter, an energy saving monitoring system according to an embodiment of the present invention will be described with reference to the accompanying drawings. The energy-saving monitoring system described below does not limit the present invention, and shows an example of the system. The overall configuration of the energy saving monitoring system will be schematically described with reference to FIG. The power strips and device-side plugs shown in FIG. 1 are shown for convenience of illustration, and are not limited to the number of installations. Specifically, the load is an electric or electronic device. Includes all equipment and devices with plugs.

  In FIG. 1, 1a-1d are device plugs. Each of these device plugs 1a-1d is a plug of each of the electric devices 3a-3d. These electric devices 3a to 3d are various devices such as an illumination lamp, an air conditioner, and a computer, and are not particularly limited. Reference numeral 5 denotes a power strip used by the device side plugs 1a to 1d. The power tap 5 includes a tap main body 5a and a plug 5b at the end of the cord connected to the tap main body 5a. The tap main body 5a of the power tap 5 includes a plurality of parallel-installed plug insertion ports 7a-7d. The plug 5b is used by being inserted into a wall outlet 6a in the building.

  The wall outlet 6a is connected to another wall outlet 6b by a power line 8 embedded in the wall. A plug 10a of an energy saving monitoring computer 10 is inserted and connected to the wall outlet 6b. The energy saving monitoring computer 10 includes a computer screen 10b, a keyboard 10c, and a mouse 10d.

  IC tags 9a-9d are individually incorporated in the respective device plugs 1a-1d. Each of the IC tags 9a-9d stores device ID data together with device data such as rated voltage and rated current of each electric device 3a-3d. The IC tags 9a-9d are called by various names such as electronic tags, but are not limited to names in the embodiment, and may be called wireless tags, for example. The IC tags 9a-9d are provided on the plugs 1a-1d by appropriate means such as printing or pasting. Although not shown, the IC tags 9a-9d are mainly configured by pairing an IC chip that stores device data, ID data, and the like with a tag antenna that transmits and receives signals.

  In the above configuration, the computer 10 performs energy-saving monitoring on the computer screen 10b by communicating with the programmable controller unit 17 in the power tap 5 via the power line 8 between the wall outlets 6a and 6b. Can be done.

  Referring to FIG. 2, the main body 5a of the power tap 5 includes a plurality of IC tag readers 11a-11d, a plurality of current detectors 13a-13d, and a plurality of switches 15a-15d for cutting off power supply. And a programmable controller unit 17 for controlling them.

  The IC tag reader 11a-11d individually communicates with the IC tags 9a-9d built in the plugs 1a-1d inserted into the plug insertion ports 7a-7d, and writes the data written in the IC tags 9a-9d, respectively. Read and output to the programmable controller unit 17. For example, this data is data such as the type of the device 3a-3d corresponding to the device-side plug 1a-1d.

  The programmable controller unit 17 obtains various data of the devices 3a to 3d connected to the plug insertion ports 11a to 11d from the reception output of the IC tag reader 11a to 11d, and the device from the detection output of the current detectors 13a to 13d. The current flowing through 3a-3d is calculated, and as will be described later, the switches 15a-15d are turned ON / OFF to control the current supply to the devices 3a-3d.

  In the IC tags 9a-9d built in the plugs 1a-1d, electromotive force is generated by electromagnetic induction by radio waves from the IC tag reader 11a-11d, and the internal tag circuit works by this electromotive force, and the IC tag It communicates with the reader 11a-11d and transmits device data such as the type of the device 3a-3d to the IC tag reader 11a-11d. In the embodiment, the IC tag 9a-9d is supplied with an electromotive force from the IC tag reader 11a-11d side, but a battery or the like can be incorporated in the IC tag 9a-9d itself.

  The programmable controller unit 17 is mainly composed of a CPU, detects whether or not the plug 1a-1d is inserted into the plug insertion port 7a-7d based on the output of the IC tag reader 11a-11d, and correspondingly switches the switch 15a. -15d is controlled to control the ON / OFF of the current supply path to the plug insertion ports 7a-7d, and the switch 15a-15d is turned ON / OFF in correspondence with the energy saving by communicating with the energy saving monitoring computer 10. To control.

  The switches 15a-15d are inserted into the one power lines 19a-19d of the plug insertion ports 7a-7d, respectively. These power lines 19a-19d are commonly connected on the plug 5b side. The other power lines 21 of the plug insertion ports 7a-7d are connected in common. A power line 22 for power line carrier communication is connected to the programmable controller unit 17.

  The programmable controller unit 17 will be described with reference to FIG. As shown in the figure, the programmable controller unit 17 includes a current calculation unit 17a, a switch driving unit 17b, a tag communication unit 17c, a power line communication modem 17d, a memory 17e, and a control unit 17f.

  The current calculation unit 17a calculates the detection output of each of the current detectors 13a to 13d and outputs the calculation result to the control unit 17f.

  The switch driving unit 17b individually drives the switches 15a to 15d in response to a driving command from the control unit 17f.

  The tag communication unit 17c performs data input / output with the IC tag reader 11a-11d according to a communication command from the control unit 17f.

  The power line communication modem 17d is based on a power line carrier signal (a signal in which communication data for communication with a device and program data used for control operation of the programmable controller unit 17 are superimposed on AC power) transmitted on the power line 22. The communication data is separated and the separated communication data is output to the control unit 17f. On the other hand, the control data from the control unit 17f is processed into a power line carrier signal so as to be carried on the power line. .

  The memory 17e has a memory area for storing the operation processing program of the control unit 17f, a working memory area, and other memory areas.

  The energy saving monitoring computer 10 will be described with reference to FIG. As shown in FIG. 4, an energy saving monitoring computer 10 includes a power line communication modem 10e, a central control unit 10f, a memory 10g, a display control unit 10h, an operation input receiving unit 10i, and a voice control unit inside the main body. 10j and a speaker 10k.

  The power line communication modem 10 e processes the power line carrier signal transmitted on the power line, similar to that of the programmable controller unit 17.

  The central control unit 10f processes communication data from the programmable controller unit 17 in each power tap 5 received by the power line communication modem 10e according to the energy saving monitoring program stored in the memory 10g, and issues a display control command to the display control unit 10h. Output.

  The display control unit 10h is configured to display and control the energy saving monitoring screen on the computer screen 10b in response to the display control command.

  The operation input receiving unit 10i processes the operation input of the mouse 10d, the keyboard 10c, and the like by the user and outputs the processed input to the central control unit 10f. The central control unit 10f controls display of the monitoring image on the energy saving monitoring screen in response to the output of the operation input receiving unit 10i.

  The voice control unit 10j synthesizes voice in response to a voice output command corresponding to the energy saving status from the central control unit 10f, and drives the speaker 10k. The voice control unit 10j contains data necessary for voice synthesis, generates corresponding voice synthesis data in response to a voice output command from the central control unit 10f, and drives the speaker 10k with the generated data. Be able to.

  Each power tap 5 described above is connected to each wall outlet 6a via a plug 5b as shown in FIG. Thereby, each power tap 5 is connected to the energy saving monitoring computer 10 on the other wall outlet 6b side via the power line 8 in the wall so as to be communicable.

  The energy-saving monitoring computer 10 obtains data on the current supplied to each device connected to each power strip 5 and processes the data by communication with the programmable controller unit 17 inside each power strip 5. After that, on the computer screen 10b, the amount of power used, the amount of CO2 and the like of each device and the entire device are calculated and displayed.

  With reference to FIG. 6, the energy-saving monitoring system in a factory is demonstrated. FIG. 6 is a plan view showing an arrangement state of the power tap 5 and the wall outlet 6 a in the factory 20. The factory 20 has a plurality of areas 20a to 20c in this example. Each area 20a-20c has a plurality of power taps 5 and a plurality of wall outlets 6a to which the power taps 5 are connected. These wall outlets 6a are monitored for energy saving by a wall buried power line 8 (not shown in FIG. 6). Connected to the wall outlet 6b on the computer 10 side. The energy saving monitoring computer 10 may be installed in the factory 20 and connected to the wall outlet 6b in the factory 20, or may be installed outside the factory 20 and connected to the wall outlet 6b outside the factory 20. .

  An example of the energy saving monitoring screen displayed on the computer screen 10b of the energy saving monitoring computer 10 will be described with reference to FIGS.

  The energy saving monitoring screen 21 shown in FIG. 7 is displayed on each of the first to fourth devices connected to any one of the power taps 5 in the first area 20a in the factory 20 shown in FIG. Displays the current supply status.

  It is assumed that the device side plugs 1a to 1d of the devices 3a to 3d are connected to all the plug insertion ports 7a to 7d of the power tap 5. The supply current to the first device 3a is 5A, the supply current to the second device 3b is 1A, the supply current to the third device 3c is 4A, and the supply current to the fourth device 3d is 3A. Such data of the supplied current is transmitted from the programmable controller unit 17 built in the power tap 5 to the energy saving monitoring computer 10 by the power line carrier communication.

  In the energy saving monitoring screen 21 of FIG. 7, since current is supplied to the first device 3a and the fourth device 3d until 10:00 on the time axis in the vertical direction of the screen, the power tap 5 in that time zone is used. The current supply to the device is 8A.

  Since the current is supplied only to the second device 1b at 10: 00-12: 00, the current supply to the device by the power tap 5 in that time zone is 1A.

  Since the current is supplied to the first device 1a and the second device 1b from 12:00 to 13:00, the current supply to the device by the power tap 5 in that time zone is 6A.

  Since the current is supplied only to the third device 1c at 13: 00-17: 00, the current supply to the device by the power tap 5 in that time zone is 4A.

  Since the current is supplied to the first device 1a and the fourth device 1d after 17:00, the current supply to the device by the power tap 5 in that time zone is 8A.

From the above, the power usage amount and CO ₂ generation amount of each of the first to fourth devices, and the total power usage amount and CO ₂ generation amount at the power tap are displayed at the bottom of the screen. Specific numerical values are not shown.

  The energy saving monitoring screen 21 shown in FIG. 7 can be switched to display of another energy saving monitoring screen or can be switched to display of the monitoring screen of the energy saving state of the entire factory by a mouse operation.

  For example, FIG. 8 shows an energy saving monitoring screen 23 corresponding to the factory 20 of FIG. In the energy saving monitoring screen 23 of FIG. 8, each of the first to third areas 20a-20c in the factory 20 is shown in a plane. In each area 20a-20c, a power tap 5 and a wall outlet 6a are shown. In each area 20a-20c, the power tap 5 displays a warning by flashing light emission or red display (indicated by hatching in the box in FIG. 8) when not in the energy saving state, and when in the energy saving state. Indicates continuous power emission or green display (in FIG. 8, the inside of the box is white) to indicate that it is in a power saving state. Further, in addition to the visual display or instead of this display, the warning display state may be notified to the user by voice according to the user's selection setting.

  As described above, in the present embodiment, on the device side, the IC tag 9a-9d is built in the device side plug 1a-1d, and the power tag 5 to which the device side plug 1a-1d is connected has an IC tag. A reader 11a-11d, current detectors 13a-13d, switches 15a-15d, and a programmable controller unit 17 are incorporated. And on the energy saving monitoring computer 10 side, since energy saving is monitored from the power usage status of each device or the entire device based on the data transmitted from the programmable controller unit 17 in the power strip 5, However, the power strip and the device-side plug are not uniquely defined for each device, and the device-side plug is compatible with any plug-insertion port in the power strip. It is possible to monitor the amount of power used by the device, improving usability.

1a-1d Device side plug 9a-9d IC tag 3a-3d Device 5 Power tap 7a-7d Plug insertion port 11a-11d IC tag reader 13a-13d Current detector 15a-15d Switch 17 Programmable controller 6a, 6b Wall outlet 10 Computer for energy saving monitoring 10a Plug 10b Computer screen (energy saving monitoring screen)
10e Power line communication modem 10f Central control unit 10h Display control unit 10j Audio control unit 10k Speaker

Claims (4)

It has a load side that is monitored for energy saving and an energy saving monitoring side that monitors the energy saving state of this load side,
The load side includes a plug connected to the load, and a power strip having a plurality of plug insertion holes into which the plug is inserted,
The plug contains an IC tag into which load data is written,
The power strip corresponds to each plug insertion port, an IC tag reader that obtains load data by communicating with an IC tag, and a current detection unit that detects a current supplied to the plug inserted into the plug insertion port And a programmable controller unit that processes communication data between the IC tag and the IC tag reader and current detection data from the current detection means and transmits the processed data to the energy saving monitoring side,
The energy saving monitoring side is configured to monitor the energy saving status of each load or the entire load by visual display or voice notification based on the data obtained by communication with the programmable controller unit. system.   The system according to claim 1, wherein the energy saving monitoring side displays the data on a screen of an energy saving monitoring computer.   3. The load-side power strip and the energy-saving monitoring computer are each provided with a power line communication modem, and the modem is capable of carrying out power line carrier communication with these modems. The system described in.   The power strip and the energy-saving monitoring computer are configured such that each plug is connected to a wall outlet and power line carrier communication of the data can be performed via a power line between the wall outlets. Item 4. The system according to Item 2 or 3.

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