JP6093249B2 - Power supply control device, power supply control system, power supply control method - Google Patents

Description

  The present invention relates to a power supply control device and the like for performing power supply control of electrical equipment.

  In business facilities such as office buildings, a large amount of electric power is used for electric devices such as PCs, displays, and lighting, and there is an increasing demand for energy saving.

  As a method for realizing energy saving in such a facility space, there is a method of performing power control such as using a human sensor, detecting the absence of a worker by the OFF signal, and turning off the lighting device in accordance with this (for example, , See Patent Document 1).

JP 2006-79363 A

  Although the human sensor is used in the method of Patent Document 1, providing the human sensor is expensive and difficult to control, and there are aspects that prevent the introduction of the system into an office or the like. For example, a human sensor may erroneously detect the absence when the office worker does not move, and the electric device may be turned off by power control.

  There are also various energy saving awareness among office workers, such as office buildings. For example, there are people who are highly aware of power saving and who frequently reduce power consumption without turning off unnecessary electrical equipment. Some have left their electrical equipment on. For example, in the former case, it is considered that power control can be omitted, and it is wasteful to perform power control uniformly for office workers who have various power saving tendencies.

  The present invention has been made in view of the above-described problems, and an object thereof is to provide a power supply control device and the like that can efficiently perform power supply control while omitting a human sensor or the like.

A first invention for achieving the above-described object is a pattern classification unit that determines a pattern of power consumption of an electrical device over a predetermined period and performs pattern classification, and power control that performs power control of the electrical device according to the determined pattern And the power control unit does not perform power control when the pattern classification unit determines that the power saving is performed, and otherwise reduces power consumption of a predetermined electrical device. Thereafter, it is determined whether or not the power consumption of the predetermined electrical device has increased, and when the power consumption of the predetermined electrical device has increased, the power control is not performed .
A second invention includes a pattern classification unit that determines a pattern of power consumption of an electric device over a predetermined period and performs pattern classification, and a power control unit that performs power control of the electric device according to the determined pattern, The power control unit does not perform power control when the pattern classification unit determines that the power saving is performed, and otherwise, after reducing the power consumption of the predetermined electrical device, The power supply control device is characterized in that it is determined whether power consumption has increased, and when the power consumption of the predetermined electrical device has not increased, power control is further performed to reduce the power consumption of the electrical device.
According to a third aspect of the present invention, a pattern classification unit that determines a pattern of power consumption of a plurality of electrical devices over a predetermined period and performs pattern classification, a power control unit that performs power control of the plurality of electrical devices according to the determined pattern, The power control unit does not perform power control when the pattern classification unit determines that the power is being saved by the pattern classification unit; otherwise, after reducing power consumption of a predetermined electrical device, It is determined whether the power consumption of the predetermined electrical device has increased. If the power consumption of the predetermined electrical device has not increased, the power control of an electrical device different from the predetermined electrical device is further performed. The power supply control device is characterized.

  In the present invention, it is possible to suitably perform power supply control while omitting the human sensor by determining the level of power saving awareness of the office worker or the like according to the power consumption status of the electrical equipment and performing power control according to the determination result. it can. In other words, it is assumed that office workers with low power-saving consciousness may always consume more power than necessary, such as not turning off electrical equipment when not in use and when not in use. By performing power control regardless of the presence or absence, a human sensor or the like can be omitted, which is excellent in terms of cost and ease of control. Further, by performing power control only when necessary, it is possible to reduce power consumption with a lean and efficient system.

  Moreover, in this invention, after reducing the power consumption of an electric equipment, it is determined whether the power consumption of the electric equipment rose. If the power consumption does not rise, it is considered that the office workers are absent or feel free to do so, and it is understood that the power consumption of the electrical equipment has been appropriately reduced according to the situation of the office workers. it can. On the other hand, if the power consumption of the electrical equipment rises, the office worker will be present and operate to bring the electrical equipment into an appropriate state, and the power consumption of the electrical equipment will be set appropriately according to the situation of the office worker etc. That's right. Thus, the presence or absence of the office worker or the like can be grasped instead of the human sensor or the like depending on whether or not the power consumption has increased, and the subsequent processing can be performed according to the determination result.

In the present invention, power control is performed for office workers who are less conscious of power saving, but when the power consumption does not increase in the above case, as described above, when the office workers are absent or are present There is a possibility that power consumption is still wasted. Therefore, in such a case, further power control can be performed to further reduce power consumption.

The pattern classification unit preferably performs pattern classification based on the power consumption of the electrical device received from a power supply device that supplies power to the electrical device from an outlet.
Thereby, the electric power feeding control for every electric equipment can be easily performed using the electric power individually consumed by the electric equipment through the outlet.

The pattern classification unit preferably performs pattern classification based on the power consumption of the electrical equipment over the most recent predetermined period before classification, and changes the length of the predetermined period according to the result of the previous pattern classification.
For example, it is conceivable that the power consumption status of electrical equipment changes in a short period of time while the power saving awareness of office workers and the like is increasing. Therefore, when the power consumption status corresponds to a pattern indicating that power saving awareness is in the process of being changed, power supply control is performed for the change in power saving awareness of the worker by performing pattern classification based on short-term power consumption next time. Can be followed.

The pattern classification unit preferably performs pattern classification by using the accumulated power consumption of the electric device during the predetermined period and the fluctuation of power consumption.
An office worker who is highly conscious of saving electricity often turns off the electrical equipment when absent, and also reduces power consumption by frequently turning off the electrical equipment when not in use. On the other hand, office workers with low power saving awareness often keep their electrical devices on even when they are absent, and even when they are present, they frequently reduce power consumption when electrical devices are unnecessary. It is thought that it will not. Therefore, it is possible to suitably perform pattern classification in accordance with these power saving consciousness from the fluctuations in the accumulated power consumption and the power consumption when the power consumption is measured for a predetermined period.

The power control unit preferably issues an alarm when reducing the power consumption of the electrical device.
If an alarm is issued to an office worker or the like when the electric device is turned off, the electric device can be prevented from being turned off without knowing, and power control can be suitably performed.

4th invention is the electric power feeding control apparatus of 1st-3rd invention , The electric power supply apparatus which transmits the electric power consumption of the said electric equipment to the said electric power feeding control apparatus while supplying electric power from the outlet to the said electric equipment, the Ru with the a power supply control system according to claim.

A fifth invention includes a step of determining a pattern of power consumption of an electric device over a predetermined period and performing pattern classification, and a step of performing power control of the electric device according to the determined pattern, wherein power saving is performed in the pattern classification. If is determined that performed by that pattern without power control, Otherwise, after reducing the power consumption of the predetermined electric equipment, to determine the power consumption of the predetermined electric device is increased, the predetermined The power supply control method is characterized in that the power control is not performed when the power consumption of the electrical equipment increases .
A sixth invention includes a step of determining a power consumption pattern of an electric device over a predetermined period and performing pattern classification, and a step of performing power control of the electric device according to the determined pattern, wherein power saving is performed in the pattern classification. If it is determined that the pattern is being performed, the power control is not performed. If not, it is determined whether the power consumption of the predetermined electrical device has increased after the power consumption of the predetermined electrical device has been reduced. If the power consumption of the electrical device does not increase, the power control is further performed to reduce the power consumption of the electrical device.
The seventh invention includes a step of determining a pattern of power consumption of a plurality of electrical devices over a predetermined period and performing pattern classification, and a step of performing power control of the plurality of electrical devices according to the determined pattern, If it is determined that power saving is performed in the pattern classification, power control is not performed. If not, whether power consumption of the predetermined electric device has increased after reducing power consumption of the predetermined electric device. If the power consumption of the predetermined electrical device is not increased, the power supply control method further includes performing power control of an electrical device different from the predetermined electrical device.

  ADVANTAGE OF THE INVENTION According to this invention, the electric power feeding control apparatus etc. which can perform electric power feeding control efficiently, omitting a human sensitive sensor etc. can be provided.

The figure which shows the electric power feeding control system 1 The figure which shows the structure of the electric power feeding control apparatus 2 The figure explaining the measurement of the power consumption of an electric equipment, and the detection of the presence or absence of the office worker by the human sensor 5 The figure which shows typically the time change of the detection result 31 of the human sensitive sensor 5, and the power consumption 32 of an electric equipment. The figure which plotted the data 41 of the accumulation power consumption of an electric equipment, and the fluctuation frequency of the power consumption of this electric equipment. Flow chart showing power supply control method Flow chart showing power supply control Diagram showing power supply control unit A Flow chart showing power supply control method The figure explaining the change of the calculation object period of accumulation power consumption and the number of fluctuations of power consumption

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

[First Embodiment]
(1. Power supply control system 1)
FIG. 1 shows a power supply control system 1 according to an embodiment of the present invention. This power supply control system 1 performs power supply control according to each worker's power saving consciousness, and includes a power supply control device 2, smart taps 3a, 3b, 3c, and the like.

  In the present embodiment, an example will be described in which power supply control is performed on the task light 11, the display 12, and the PC 13 arranged on each desk 10 on which each office worker works in an office space. However, the power supply control target is not limited to the task light 11, the display 12, and the PC 13, but may be other electrical devices. Further, the present invention is not limited to the one provided on the desk 10 of the office worker, and can be applied to other than the office space.

  Each of the smart taps 3a, 3b, and 3c supplies power to the task light 11, the display 12, and the PC 13 from a building outlet (not shown), and also uses the wireless communication unit (not shown) It is a power supply device that can transmit to the power supply control device 2 from the figure. In addition, at least the smart tap 3c is provided with an alarm function so that an alarm sound can be transmitted during power control described later.

  The power supply control device 2 is connected to the task light 11, the display 12, and the PC 13 of each desk 10 via the network 4, and controls the power consumption of each electric device according to a procedure described later. In the present embodiment, a network connection is made by wire using a cable or the like, but a wireless connection is also possible.

  As shown in FIG. 2A, the power supply control device 2 is configured, for example, by connecting a control unit 21, a storage unit 22, an input unit 23, a display unit 24, a communication unit 25, and the like via a bus 26. It can be realized using a computer.

  The control unit 21 includes a CPU, ROM, RAM, and the like. The CPU calls and executes a program stored in the storage unit 22, ROM, storage medium, or the like to a work memory area on the RAM, and drives and controls each unit connected via the bus 26. Thereby, the control part 21 performs the process mentioned later. The ROM permanently holds a computer boot program, a program such as BIOS, data, and the like. The RAM temporarily holds the loaded program and data, and includes a work area used by the control unit 21 for performing various processes.

  The storage unit 22 is a hard disk drive or the like, and stores a program executed by the control unit 21, data necessary for program execution, an OS, and the like. These programs and the like are read by the control unit 21 as necessary, transferred to the RAM, and read and executed by the CPU.

The input unit 23 is an input device such as a keyboard, a pointing device such as a mouse, or a numeric keypad, and outputs input data to the control unit 21.
The display unit 24 includes a display device and a logic circuit (such as a video adapter) for executing display processing in cooperation with the display device.

The communication unit 25 includes a communication control device, a communication port, and the like, and is a communication interface that mediates communication via a network, and performs communication control.
The bus 26 is a path that mediates transmission / reception of control signals, data signals, and the like between the respective units.

  FIG. 2B is a diagram illustrating a functional configuration of the power supply control device 2. As illustrated, the power supply control device 2 includes a pattern classification unit 201 and a power control unit 202.

The pattern classification unit 201 determines the power consumption pattern of the task light 11, the display 12, and the PC 13 over a predetermined period by the control unit 21 of the power supply control device 2 and performs pattern classification.
The power control unit 202 performs power control of the task light 11, the display 12, and the PC 13 according to the determined pattern by the control unit 21 of the power supply control device 2. The pattern classification and power control method will be described later.

(2. Preparation of criteria for pattern classification)
In the present embodiment, during power supply control, the power consumption statuses of the task light 11, the display 12, and the PC 13 over a predetermined period are classified into patterns from the viewpoint of the difference in power saving awareness of the office worker, and power control is performed according to this pattern. . For this reason, in this embodiment, a reference (an expression of a boundary line 42 to be described later) for pattern classification is created in advance for each electrical device such as the task light 11, the display 12, and the PC 13. First, the standard creation will be described.

  In this embodiment, as shown in FIG. 3, the power consumption of the task light 11, the display 12, and the PC 13 over a predetermined period (for example, one week) is measured with time using smart taps 3a, 3b, and 3c in advance. The presence sensor 5 is detected by the human sensor 5 at the desk 10.

  Here, the measurement results of the power consumption by the smart taps 3a, 3b, 3c and the detection result of the office worker by the human sensor 5 are transmitted to the power supply control device 2 by wireless communication, and using these data, the power supply control device is transmitted. Assume that 2 performs an operation described later. However, another computer or the like may be used instead of the power supply control device 2.

  FIG. 4 schematically shows the detection result 31 of the human sensor 5 and the time change of the power consumption 32 of one electrical device among the task light 11, the display 12, the PC 13, and the like. FIG. 4A shows an example of a worker with high power saving awareness, and FIG. 4B shows an example of a worker with low power saving awareness. In each figure, the horizontal axis represents time, and the detection result 31 is represented by a dotted line with the vertical axis representing a detection signal (a positive value when a worker is detected and 0 when no worker is detected), and power consumption 32 is a vertical axis. The power consumption is represented by a solid line.

  Here, as shown in FIG. 4 (a), an office worker who is highly conscious of saving electricity often turns off the electrical equipment when the office worker is absent (when the human sensor 5 is not detected). Even when the user is present (when the human sensor 5 detects the power), it is considered that the power consumption is reduced by frequently turning it off when the electric device is unnecessary. Therefore, when the power consumption is measured for a predetermined period, the accumulated power consumption is small and the fluctuation of the power consumption increases.

  On the other hand, as shown in FIG. 4 (b), an office worker who is not conscious of power saving often keeps the electrical equipment on even when he / she is absent. It is thought that power consumption will not be reduced frequently when equipment is unnecessary. Therefore, when the power consumption is measured for a predetermined period, the cumulative power consumption is large and the fluctuation of the power consumption is small.

  In the present embodiment, the cumulative power consumption and the number of fluctuations in power consumption during the period are calculated from the power consumption of the task light 11 of the desk 10, the display 12, and the PC 13 of each office worker over a predetermined period. Then, a standard for dividing the data of workers with high power saving awareness and those with low power saving awareness is calculated. Various methods can be considered. Here, as an example, an example in which classification is performed using an SVM (support vector machine) which is a kind of machine learning will be described.

  Although SVM is a known method, as described in brief, as shown in FIG. 5, the horizontal axis represents the cumulative power consumption of an electrical device, and the vertical axis represents the number of fluctuations in the power consumption of the electrical device. When plotting the worker data 41, the shortest distance 43 (margin) between the boundary line 42 and the data group 44 of the worker with high power saving awareness and the data group 44 of the worker with low power saving awareness is maximized. The equation of the boundary line 42 that divides the data group 44 is calculated. The detection result by the human sensor 5 is used to determine the level of power saving awareness of the worker corresponding to each data 41 in comparison with the power consumption status of the electrical equipment. Thereby, each data 41 is used as a teacher signal in SVM.

  In the figure, a data group 44 having a smaller value than the expression of the boundary line 42 and located at the lower right of the boundary line 42 has a high cumulative power consumption and a small number of fluctuations in the power consumption. It is a waste type). On the other hand, the data group 44 having a larger value than the formula of the boundary line 42 and located at the upper left of the boundary line 42 is for those who are highly conscious about power saving (hereinafter referred to as the power saving type). It is said).

  In the present embodiment, such a formula of the boundary line 42 is created for each of the electrical devices such as the task light 11, the display 12, and the PC 13, and is used as a reference for pattern classification to be described later. However, the reference creation method is not limited to this. For example, in the present embodiment, the number of fluctuations is calculated in order to express fluctuations in power consumption, but other values may be used. For example, it is also possible to use a dispersion value of power consumption measured at each measurement point in the predetermined period, or an average fluctuation width when power consumption fluctuates. Alternatively, as long as the power saving consciousness can be reflected and the index is related to the power consumption, the reference can be calculated for values other than the accumulated power consumption and power consumption fluctuation. Further, not only SVM but also other known methods such as partial clustering can be used as appropriate to create a reference, and a reference at the time of pattern classification can be determined artificially.

(3. Power supply control method)
Next, a power feeding control method in the power feeding control system 1 of the present embodiment will be described with reference to FIG. FIG. 6 is a flowchart showing the flow of the power feeding control method.

  In the power supply control system 1 of the present embodiment shown in FIG. 1, the power supply control device 2 receives the power consumption of the task light 11, the display 12, and the PC 13 from the smart taps 3a, 3b, and 3c with time, and has a predetermined pattern. When the classification time is reached, pattern classification of the worker's power consumption status is performed (S1). The pattern classification time is determined in advance.

  When the pattern classification of S1 is performed, the power supply control device 2 first determines the accumulated power consumption regarding the power consumption of the task light 11, the display 12, and the PC 13 of the office worker's desk 10 over the predetermined period immediately before the pattern classification. Calculate the number of power consumption fluctuations. As described above, when another value is used for creating a reference for pattern classification, the value is calculated. For example, when a variance value of power consumption or an average fluctuation range of power consumption is used, these values are calculated. Here, the most recent predetermined period does not need to be strictly a past predetermined period starting from the start of the processing of S1, and there may be a time lag that allows the latest power consumption status of the worker to be grasped. .

  The power supply control device 2 compares the calculated cumulative power consumption and the number of fluctuations of the power consumption with the formula of the boundary line 42 for each electrical device, and the power consumption status of each electrical device is a waste type because of its magnitude relationship. The power saving type is classified.

  When two or more of the task light 11, the display 12, and the PC 13 fall under the waste type, the power supply control device 2 uses the power consumption status pattern of the desk 10 office worker with low power saving awareness and wasteful use of power. It is determined that it is a pattern (hereinafter referred to as a “waste pattern”). On the other hand, if one of the task lights 11, the display 12, and the PC 13 corresponds to the waste type, the pattern of the power consumption status of the office worker is a pattern in which power saving awareness is high (hereinafter referred to as “power saving”). Pattern). Note that the pattern classification method is not limited to this, and can be determined as appropriate. For example, the pattern classification method can be classified into the power saving pattern only when all the electric devices correspond to the power saving type.

  When the power supply control device 2 determines that the wasteful pattern is used in S1 (S1; wasteful pattern), the power supply control device 2 shifts to power control (S2).

  FIG. 7 is a flowchart showing power control in S2. As shown in FIG. 7, in the case of power control, first, the power supply control device 2 determines whether or not the task light 11 of the desk 10 of the office worker is lit (S21). If the task light 11 is not turned on (S21; N), the process proceeds to S24 described later.

  On the other hand, if the task light 11 is lit (S21; Y), the power supply control device 2 transmits a control signal to the dimming unit (not shown) of the task light 11 via the network 4 and turns the task light 11 on. The light is turned off to reduce power consumption (S22).

  Here, if the office worker is present and the task light 11 is necessary, it is considered that the office worker re-lights the task light 11 and the power consumption of the task light 11 increases. On the other hand, if there is no office worker or the task light 11 is unnecessary, the task light 11 remains off, and unnecessary power consumption is reduced by S22.

  In the present embodiment, after the task light 11 is turned off, the power supply control device 2 determines whether the task light 11 is turned on again (power consumption is increased) (S23). This determination and the determination in S21 can be performed based on the power consumption of the task light 11 transmitted from the smart tap 3a to the power supply control device 2. Further, the lighting state of the task light 11 can be detected via the network 4.

  When the task light 11 is turned on again (S23; Y), the power supply control device 2 ends the series of power control in S2 after a predetermined time has elapsed (S31).

  On the other hand, if the task light 11 is not lit again (S23; N), the power supply control device 2 next determines whether or not the luminance of the display 12 is set to a predetermined value or more (S24). If the luminance of the display 12 is less than the predetermined value (S24; N), the process proceeds to S27 described later.

  If the brightness of the display 12 is set to a predetermined value or higher (S24; Y), the power supply control device 2 transmits a control signal to the display 12 via the network 4 to reduce the brightness of the display 12 and reduce power consumption. Reduce (S25).

  Similarly to the above, if the office worker is present and the brightness of the display 12 is low, the office worker himself increases the brightness of the display 12 and the power consumption of the display 12 increases. On the other hand, if the office worker is absent or feels that the brightness of the display 12 is low, the brightness of the display 12 remains unchanged, and unnecessary power consumption is reduced by S25.

  Accordingly, the power supply control device 2 again determines whether the luminance of the display 12 has increased (power consumption has increased) after the luminance of the display 12 has decreased (S26). This determination and the determination of S24 can be performed based on the power consumption of the display 12 transmitted from the smart tap 3b to the power supply control device 2. In addition, the brightness setting of the display 12 can be acquired via the network 4.

  If the luminance of the display 12 increases (S26; Y), the power supply control device 2 ends the series of power control in S2 after a certain period of time (S31) as described above.

  On the other hand, if the luminance of the display 12 does not increase (S26; N), the power supply control device 2 next determines whether or not the PC 13 is being activated (S27). This determination can be made based on the power consumption of the PC 13 transmitted from the smart tap 3c to the power supply control device 2, for example. It is also possible to acquire the operation status of the PC 13 via the network 4 and perform it.

  If the PC 13 is not activated (S27; N), the power supply control device 2 ends the series of power control in S2 after a predetermined time has elapsed (S31).

  On the other hand, if the PC 13 is being activated (S27; Y), the power supply control device 2 sends a control signal to the smart tap 3c via radio to generate an alarm sound, and then issues an alarm that the PC 13 is to be shut down. Perform (S28). Note that the alarm for shutting down is not limited to this, and for example, a display indicating shutting down after a predetermined time may be displayed on the display 12.

  If the office worker is present and the PC 13 is in use, the office worker inputs that the shutdown of the PC 13 is stopped. Although various inputs are conceivable, for example, a signal indicating cancellation may be transmitted from the smart tap 3c to the power supply control device 2 in accordance with the input at the smart tap 3c. Further, a button for instructing to stop the shutdown can be displayed on the display 12, and the shutdown can be stopped by selecting the button.

  If there is an input to cancel before the shutdown (S29; Y), the power supply control device 2 stops the shutdown, and after a predetermined time has elapsed (S31), ends the series of power control in S2.

  On the other hand, if there is no input to cancel (S29; N), the power supply control device 2 sends a control signal to the PC 13 via the network 4, shuts down the PC 13, stops the CPU, and reduces power consumption ( S30). Thereafter, when a predetermined time has elapsed (S31), the series of power control in S2 is terminated.

  As described above, the power control in S2 of FIG. 6 is repeated at regular intervals until the next pattern classification time (S3; N). When the next pattern classification time comes (S3; Y), the processing returns to S1.

  On the other hand, when the power supply control device 2 determines that the power saving pattern is S1 (S1; power saving pattern), the power control is not performed (S4), and the pattern classification time (S5; N) is left as it is. When the classification time comes (S5; Y), the process returns to S1.

  As described above, in the present embodiment, the power consumption awareness of the office worker or the like is determined according to the power consumption status of the electrical equipment, and power control is performed according to the determination result, thereby supplying power while omitting the human sensor. Control can be suitably performed. In other words, it is assumed that office workers with low energy conservation awareness will always consume more power than necessary, such as not turning off electrical equipment when they are absent or unnecessary. By performing power control regardless of the absence, it is possible to omit a human sensor or the like, which is excellent in terms of cost and ease of control. Further, by performing power control only when necessary, it is possible to reduce power consumption with a lean and efficient system.

  In power control, after reducing the power consumption of electrical devices such as the task light 11 and the display 12, it is determined whether the power consumption has increased. If the power consumption does not rise, it is considered that the office workers are absent or feel free to do so, and it is understood that the power consumption of the electrical equipment has been appropriately reduced according to the situation of the office workers. it can. On the other hand, if the power consumption of the electrical equipment rises, the office worker will be present and operate to bring the electrical equipment into an appropriate state, and the power consumption of the electrical equipment will be set appropriately according to the situation of the office worker etc. That's right. In this way, it is possible to grasp the presence or absence of office workers etc. as information necessary for control based on whether the power consumption has increased instead of the presence sensor etc., and the subsequent processing can be performed according to this determination result it can.

  In particular, in this embodiment, when the power consumption of the task light 11 and the display 12 does not increase, power control is further performed to reduce the power consumption of another electrical device such as the display 12 and the PC 13. In this embodiment, power control is performed for a worker with low power saving awareness, but if the power consumption does not increase in the above case, as described above, the worker is absent and still not present. There may be a possibility of wasted power consumption. Therefore, in such a case, further power control can be performed to further reduce power consumption. However, the order of the electrical devices that perform power control or the power control method can be determined as appropriate in addition to those described in the present embodiment.

  For example, in the present embodiment, the task light 11 and the PC 13 are turned off or shut down to reduce power consumption, and the display 12 is reduced in luminance to reduce power consumption. However, the present invention is not limited to this. For example, the illuminance of the task light 11 can be reduced to reduce power consumption. As can be seen from the above, “reducing power consumption” includes turning off the electrical device. Similarly, “the power consumption increases” includes the case where the electrical device is turned on.

  Further, in this embodiment, as schematically shown in FIG. 8A, the power supply control is performed by setting each individual worker as a unit (hereinafter referred to as “power supply control unit A”). 11, the display 12 and the electric equipment a, b, and c such as the PC 13 are performed. However, the power supply control unit A is not limited to individual office workers.

  For example, as schematically shown in FIG. 8B, a group consisting of a plurality of office workers is set as a power supply control unit A, and electric devices a ′ to c ′ (hereinafter referred to as copiers) assigned to be shared by the group. The power consumption status pattern may be determined, the power consumption may be reduced, etc.

  Also in this case, the pattern classification similar to the above can be performed for the power consumption status of the shared electric devices a ′ to c ′. Then, by reducing the power of one shared electric device by the same control as described above (for example, when the copier is in a standby state and the display is not displayed), if the power consumption of this shared electric device does not increase, It is possible to perform power control such as reducing the power consumption of another shared electric device assigned to the group.

  That is, in this embodiment, when the power consumption of a predetermined electrical device does not increase after power reduction, the power control of another electrical device is performed to reduce the power consumption. “Equipment” refers to another of a plurality of electric devices assigned to the power supply control unit A, such as an individual worker or a group of a plurality of workers.

  However, if the power consumption does not increase after the power reduction of a predetermined electrical device, the power consumption of the same electrical device may be controlled to reduce the power consumption. For example, when it is determined in S26 that the brightness of the display 12 does not increase, the power consumption is further reduced, for example, the display 12 is turned off. In the present invention, such power control is performed. Is also possible.

  Moreover, in this embodiment, since pattern classification is performed based on the power consumption of the electric device received from the smart taps 3a to 3c that supply electric power to the electric device from the outlet, the individual consumption by the electric device via the outlet is performed. Power supply control for each electric device can be easily performed using the generated electric power.

  Further, the pattern classification is performed by using the accumulated power consumption of the electric equipment during a predetermined period and the fluctuation of the power consumption. Thereby, as above-mentioned, the pattern classification according to a worker's power saving consciousness can be performed suitably.

  In the present embodiment, since an alarm is issued when the PC 13 is shut down, the PC 13 can be prevented from being shut down without the knowledge of the office worker, and power control can be suitably performed. This is particularly effective in the power control of the PC 13 or the like essential for the work of the office worker or the like. However, the present invention is not limited to this, and an alarm may be issued even when the task light 11 is turned off or the brightness of the display 12 is lowered. Good.

  In addition, the office worker himself / herself consumes power wastefully because the task light 11 and the like are automatically turned off while the user is present, or the brightness of the display 12 is lowered. Because it understands, it contributes to fostering energy-saving awareness.

  In the present embodiment, the pattern classification of S1 is performed by the power supply control device 2. However, the present invention is not limited to this, and it is possible for the operator to perform pattern classification by checking the power consumption during a predetermined period. Further, the operator can also determine whether or not the power consumption of the electrical equipment described in S23, S26 and the like has increased by checking the power consumption and the like. In this case, it is possible to input the pattern classification and determination results to the power supply control device 2 and perform power control of each electric device in the same manner as described above. Alternatively, according to the result of pattern classification or determination, the operator can separately control the power of each electrical device, and power supply control similar to the above can be performed.

[Second Embodiment]
Next, a second embodiment of the present invention will be described. In the second embodiment, the power supply control system 1 described with reference to FIG. 1 and the like is used. However, unlike the first embodiment, the power consumption status of the office worker is classified into three types and the power supply control is performed.

  FIG. 8 is a flowchart showing the flow of the power feeding control method of the second embodiment. Also in the present embodiment, in the power supply control system 1 shown in FIG. 1, the power supply control device 2 receives the power consumption of the task light 11, the display 12, and the PC 13 over time, and at the predetermined pattern classification time, Pattern classification of power consumption status is performed (S11).

  In the pattern classification of S11, the power supply control device 2 first determines the power consumption of the task light 11, the display 12 and the PC 13 of the office desk 10 in the latest predetermined period before the pattern classification, as in the first embodiment. Accumulated power consumption and the number of fluctuations of power consumption are calculated, and based on this, it is classified whether the power consumption status of each electrical device falls into waste type or power saving type.

  However, in this embodiment, if all of the task light 11, the display 12, and the PC 13 correspond to the wasted type, it is determined that the pattern of the power consumption status of the office worker of the desk 10 is a wasted pattern. On the other hand, when there is no waste type, the power consumption status of the office worker is determined as a power saving pattern. If one or two of the task lights 11, the display 12, and the PC 13 is a waste type, the worker's power consumption pattern is conscious of power saving between the wasteful pattern and the power saving pattern. It is determined that the power saving consciousness is a medium pattern (hereinafter referred to as “intermediate pattern”).

  If the power supply control device 2 determines that the pattern is a wasteful pattern in S11 (S11; wasteful pattern), the power control (S12) is repeated at regular intervals until the pattern classification time is reached (S13; N). (S13; Y), returning to the process of S11, the next pattern classification is performed. The power control in S12 is the same as that described with reference to FIG.

  If it is determined that the power saving pattern is determined in S11 (S11; power saving pattern), power control is not performed as in the first embodiment (S14), and the pattern classification time is left until the pattern classification time is reached (S15; N). (S15; Y), the process returns to S11.

  On the other hand, when it determines with an intermediate pattern in S11 (S11; intermediate pattern), the electric power feeding control apparatus 2 transfers to power control (S16), and performs power control for every fixed time until it becomes pattern classification time (S17; N). Repeat. This power control is also the same as that described with reference to FIG.

  Even in the case of an intermediate pattern, the next pattern classification is performed when the pattern classification time is reached (S17; Y). In this embodiment, the accumulated power consumption and consumption of the electrical equipment used when performing the next pattern classification are performed. The predetermined period, which is the calculation target period for the number of power fluctuations, is set shorter than normal (in the case of a wasteful pattern or a power saving pattern) (S18). Thereafter, the process returns to S11 to perform the next pattern classification.

  Such a change in the calculation target period of the accumulated power consumption and the number of fluctuations in the power consumption will be described with reference to FIG. FIG. 9 schematically shows an example of a change in power consumption when the horizontal axis is time and the vertical axis is power consumption of an electrical device, and the worker's awareness of power saving increases. In other words, the power consumption state of the electric equipment has shifted from the above-described waste type with a large amount of accumulated power consumption and a small variation to a power saving type with a small amount of accumulated power consumption and a large variation.

  In the middle of the change of the power consumption status, when the pattern classification result obtained from the power consumption in the period 51 is a wasteful pattern at the time of pattern classification indicated by “pattern classification (1)” in the figure, for example, “pattern classification ( At the time of the next pattern classification indicated by “2)”, the period 52 for calculating the accumulated power consumption and the number of fluctuations of the power consumption of the electrical equipment is the same length as the previous period 51.

  However, if the result of the pattern classification is the previous intermediate pattern, after performing power control, the cumulative power consumption and power consumption of the electrical equipment during the next pattern classification indicated by “pattern classification (3)” in the figure The period 53 for calculating the number of fluctuations is made shorter than the normal periods 51 and 52.

  It should be noted that the equation of the boundary line 42 (see FIG. 4) for determining the waste type and the power saving type of each electric device from the power consumption acquired over the period 53 was calculated for a period of normal length. It is possible to use the expression of the boundary line 42 as it is. Alternatively, it can be obtained in advance from the measurement result of the power consumption over the length of this period 53 separately.

  In addition, after being classified as an intermediate pattern, if the pattern is classified into another pattern (a wasteful pattern or a power saving pattern) at the next and subsequent pattern classifications, the calculation target period returns to the original normal length. .

  In this way, the intermediate pattern is considered to be shifting from the wasteful pattern to the power saving pattern or vice versa, so the next time, pattern classification is performed based on the short-term power consumption, and To keep up with changes. As described above, in the present embodiment, the length of the period for calculating the accumulated power consumption or the like is changed when the next pattern classification is performed according to the result of the pattern classification. Can be made.

  In the present embodiment, three types of pattern classification are performed, but it is also possible to classify into more patterns. In addition to shortening the predetermined period according to the result of pattern classification, it is possible to change how much it is shortened depending on the result of pattern classification. In addition, it is also possible to change the electric device to be subjected to power control and the power control method itself according to the result of pattern classification such as a wasteful pattern and an intermediate pattern.

  As mentioned above, although embodiment of this invention was described referring an accompanying drawing, the technical scope of this invention is not influenced by embodiment mentioned above. It is obvious for those skilled in the art that various modifications or modifications can be conceived within the scope of the technical idea described in the claims, and these are naturally within the technical scope of the present invention. It is understood that it belongs.

1: Power supply control system 2: Power supply control devices 3a, 3b, 3c: Smart tap 4: Network 5; Human sensor 11: Task light 12: Display 13: PC

Claims (8)

A pattern classification unit for determining a pattern of power consumption of an electric device over a predetermined period and performing pattern classification;
A power control unit that performs power control of the electrical device according to the determined pattern;
Comprising
The power control unit
If the pattern classification unit determines that the power is being saved, the power control is not performed. Otherwise, the power consumption of the predetermined electrical device is increased after the power consumption of the predetermined electrical device is reduced. If the power consumption of the predetermined electrical device rises, power control is not performed . A pattern classification unit for determining a pattern of power consumption of an electric device over a predetermined period and performing pattern classification;
A power control unit that performs power control of the electrical device according to the determined pattern;
Comprising
The power control unit
If the pattern classification unit determines that the power is being saved, the power control is not performed. Otherwise, the power consumption of the predetermined electrical device is increased after the power consumption of the predetermined electrical device is reduced. If the power consumption of the predetermined electrical device does not increase, power control is further performed to reduce the power consumption of the electrical device. A pattern classification unit for determining a pattern of power consumption of a plurality of electrical devices over a predetermined period and performing pattern classification;
A power control unit that performs power control of the plurality of electrical devices according to the determined pattern;
Comprising
The power control unit
If the pattern classification unit determines that the power is being saved, the power control is not performed. Otherwise, the power consumption of the predetermined electrical device is increased after the power consumption of the predetermined electrical device is reduced. When the power consumption of the predetermined electrical device does not increase , the power supply control device further performs power control of an electrical device different from the predetermined electrical device. The pattern classification unit
Perform pattern classification based on the power consumption of electrical equipment over the last specified period before classification,
4. The power supply control device according to claim 1, wherein the length of the predetermined period is changed according to a result of a previous pattern classification. 5. A power supply control device according to any one of claims 1 to 4 ,
A power supply device that supplies power from the outlet to the electrical device and transmits power consumption of the electrical device to the power supply control device;
Power supply control system characterized by Ru with a. Determining a pattern of electric power consumption of an electric device over a predetermined period and performing pattern classification;
Performing power control of the electrical equipment according to the determined pattern;
Including
If it is determined that power saving is performed in the pattern classification, power control is not performed. If not, whether power consumption of the predetermined electric device has increased after reducing power consumption of the predetermined electric device. And the power control is not performed when the power consumption of the predetermined electrical device increases . Determining a pattern of electric power consumption of an electric device over a predetermined period and performing pattern classification;
Performing power control of the electrical equipment according to the determined pattern;
Including
If it is determined that power saving is performed in the pattern classification, power control is not performed. If not, whether power consumption of the predetermined electric device has increased after reducing power consumption of the predetermined electric device. When the power consumption of the predetermined electrical device does not increase, power control is further performed to reduce the power consumption of the electrical device . Determining a pattern of power consumption of a plurality of electrical devices over a predetermined period and performing pattern classification;
Performing power control of the plurality of electrical devices according to the determined pattern;
Including
If it is determined that power saving is performed in the pattern classification, power control is not performed. If not, whether power consumption of the predetermined electric device has increased after reducing power consumption of the predetermined electric device. If the power consumption of the predetermined electrical device does not increase , the power supply control method further performs power control of an electrical device different from the predetermined electrical device .

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