JP7113662B2 - Control system, server, control method, and program - Google Patents

Description

The present invention relates to a control system, server, control method, and program for controlling electrical equipment.

Conventionally, in the control of electrical equipment using a photovoltaic power generation system, there is a system that predicts the amount of power generation using a weather forecast and controls the electrical equipment based on the predicted amount of power generation. As an example of such a system, Patent Literature 1 predicts the distribution of clouds to predict the generated power.

JP 2012-147578 A

In Patent Literature 1, in order to predict the distribution of clouds, the amount of power generated by scattered photovoltaic power generation devices is obtained. However, it is very costly to place photovoltaic units at intervals sufficient to detect sudden changes in weather.

The present invention has been made to solve the above problems, and provides a control system, server, control method, and program capable of controlling power consumption more accurately in response to changes in weather at low cost. With the goal.

In order to achieve the above object, the control system according to the present invention includes:
a first illuminance measuring means for measuring a first illuminance of sunlight at a first point;
a first lighting control means for controlling lighting of the first lighting means installed at the first point based on the first illuminance measured by the first illuminance measuring means;
a first detection means for detecting a decrease due to clouds in the first illuminance measured by the first illuminance measurement means;
a second illuminance measuring means for measuring a second illuminance of sunlight at a second point different from the first point;
a second detection means for detecting a decrease due to the cloud in the second illuminance measured by the second illuminance measurement means;
a first photovoltaic power generation means installed in a house to generate electrical energy from sunlight;
equipment control means for controlling electrical equipment installed in the house using the electrical energy generated by the first solar power generation means;
A first decrease time when a decrease in the first illumination is detected by the first detection means, a second decrease time when a decrease in the second illumination is detected by the second detection means, the first point and the Arrival time prediction means for predicting an arrival time when the cloud reaches the house based on a first distance from the second point and a second distance between the house and the first point or the second point. When,
with
The equipment control means controls the operation of the electrical equipment based on the arrival time predicted by the arrival time prediction means.

ADVANTAGE OF THE INVENTION According to this invention, power consumption can be controlled with high precision according to the change of weather at low cost.

A diagram showing the configuration of a control system according to Embodiment 1 of the present invention. FIG. 1 shows a hardware configuration of a lighting device according to Embodiment 1; FIG. 1 shows a hardware configuration of a server according to Embodiment 1; FIG. 2 shows a hardware configuration of a control device according to Embodiment 1; 1 is a diagram showing functional configurations of a lighting device, a server, and a control device according to Embodiment 1; FIG. FIG. 6(a) is a diagram showing temporal changes in the amount of power generated by a photovoltaic power generation facility and the amount of power consumed by electrical equipment in a conventional control system, and FIG. Diagram showing the time transition of the amount of power generated by photovoltaic power generation equipment and the amount of power consumed by electrical equipment 4 is a flowchart showing power consumption control processing executed by the control system according to the first embodiment; FIG. 11 is a diagram for explaining the arrangement of lighting devices and houses according to Embodiment 2, and a region through which clouds pass; FIG. 11 shows functional configurations of a lighting device, a server, and a control device according to Embodiment 2; FIG. 11 shows functional configurations of a lighting device, a server, and a control device according to Embodiment 3;

Hereinafter, air conditioning systems according to embodiments of the present invention will be described in detail with reference to the drawings. In addition, in each drawing, the same code|symbol is attached|subjected to the same or equivalent part.

(Embodiment 1)
FIG. 1 is a diagram showing the overall configuration of a control system 1 according to Embodiment 1 of the present invention. The control system 1 includes lighting devices 100a and 100b, a server 200, a solar power generation facility 300, a power measuring device 400, a control device 500, and an electric device 600. In the control system 1, the server 200 predicts the movement of the cloud C based on the time when the illuminance measured by the lighting devices 100a and 100b has decreased, and the control device 500 installed in the house H predicts that the cloud will reach the house H. It is a system that notifies the time.

The lighting devices 100a and 100b are street lamps installed in utility poles, building roofs, and other positions where sunlight reaches. Lighting and turning off of the lighting devices 100a and 100b are controlled according to the illuminance, as will be described later. The position P1 (x1, y1) of the first point where the lighting device 100a is installed and the position P2 (x2, y2) of the second point where the lighting device 100b is installed are known. Positions P1 and P2 of 100a and 100b are stored. Lighting devices 100 a and 100 b are communicably connected to server 200 via Internet 700 . Therefore, the lighting devices 100a and 100b can be configured by incorporating a wireless communication module for communicating with the server 200 into existing streetlights whose lighting and extinguishing are controlled according to the illuminance. Detailed configurations of the illumination devices 100a and 100b will be described later. The lighting device 100a is an example of the lighting device according to the present invention, and the lighting device 100b is an example of the illuminance measuring device according to the present invention.

The server 200 is a server computer installed and operated by the manufacturer or sales company of the control device 500 , has functions as a general web server, and is connected to the Internet 700 . In the present embodiment, server 200 receives the time when the illuminance has decreased from lighting devices 100a and 100b via Internet 700. FIG. Based on the received time and the positions P1 and P2 of lighting devices 100a and 100b, server 200 predicts the time when cloud C will reach house H, and sends the predicted time to control device 500 via Internet 700. Send. A detailed configuration of the server 200 will be described later.

The photovoltaic power generation facility 300 includes a PV (photovoltaic) panel 301 and a PV-PCS 302 that is a power conditioning system. The PV panel 301 is installed on the roof of the house H and generates electricity by converting solar energy into electrical energy. The PV-PCS 302 converts the DC power generated by the power generation of the PV panel 301 into AC power to generate the generated power and supplies it to the distribution board 800 via the power line PL1. The photovoltaic power generation facility 300 is an example of the first photovoltaic power generation means according to the present invention.

Power measuring device 400 measures the power transmitted to each of power lines PL1 to PL3 installed in house H. FIG. Power line PL<b>1 is arranged between commercial power system 900 and distribution board 800 . Power line PL<b>2 is arranged between photovoltaic power generation facility 300 and distribution board 800 . Power line PL3 is arranged between electrical device 600 and distribution board 800 . Power measuring device 400 is connected via communication lines to each of CTs (Current Transformers) 1 to CT3 connected to power lines PL1 to PL3, respectively. CT1 to CT3 are sensors for measuring AC current. The power measuring device 400 measures commercial power, which is the power purchased by the consumer from the electric power company in the house H, based on the measurement result of CT1. Also, the power measuring device 400 measures the power generated by the photovoltaic power generation facility 300 based on the CT2 measurement result. Also, power measuring device 400 measures the power consumed in electrical device 600 based on the measurement result of CT3.

The power measuring device 400 also has a communication interface, and is communicably connected to the control device 500 via a network built in the house H (hereinafter referred to as a home network). The home network is, for example, a network conforming to ECHONET Lite. Power measuring device 400 may be connected to a home network via an external communication adapter (not shown). The power measuring device 400 then transmits the measured power to the control device 500 . The power measurement value transmitted to the control device 500 by the power measuring device 400 may be expressed in units of power (watts), or the power may be integrated over a preset integration time. It may be represented by the unit of the amount of electric power.

The control device 500 is a control device that centrally controls a system called HEMS (Home Energy Management System) that manages power used in the house H. FIG. In this embodiment, the control device 500 controls the electrical equipment 600 installed in the house H according to the arrival time of the clouds C received from the server 200 . A detailed configuration of the control device 500 will be described later.

Electrical equipment 600 is installed in house H and is electrically connected to commercial power system 900 and solar power generation facility 300 via power line PL3 branched by distribution board 800 . Electrical equipment 600 has a communication interface and communicates with control device 500 via the home network described above. Note that each electrical device 600 may be designed to be connected to a home network via an external communication adapter (not shown). Each electric device 600 operates according to control instructions from the control device 500 .

The electric appliances 600 specifically include air conditioners, lighting equipment, electric cookers, televisions, refrigerators, ventilation equipment, hot water supply equipment, and floor heating equipment. However, electrical device 600 is not limited to these examples, and may be any device that operates on power supplied from power line PL<b>3 and can communicate with control device 500 . Although two electrical devices 600 are illustrated in FIG. 1, the number of electrical devices 600 applicable to the control system 1 is not limited to this and is arbitrary.

Next, the hardware configuration of the illumination devices 100a and 100b will be described in detail. In the present embodiment, lighting devices 100a and 100b have the same configuration, and lighting devices 100a and 100b are collectively referred to as lighting device 100 hereinafter. As shown in FIG. 2 , lighting device 100 includes control unit 101 , storage unit 102 , communication unit 103 , lighting unit 104 , and illuminance sensor unit 105 . These units are connected via a bus 106 .

The control unit 101 includes a CPU (Central Processing Unit), a ROM (Read Only Memory), and a RAM (Random Access Memory), which are not shown. In the control unit 101 , the CPU reads programs and data stored in the ROM, uses the RAM as a work area, and controls the lighting device 100 in an integrated manner.

The storage unit 102 is, for example, a non-volatile semiconductor memory such as flash memory, EPROM (Erasable Programmable ROM), EEPROM (Electrically Erasable Programmable ROM), or HDD (Hard Disk Drive), and serves as a so-called secondary storage device. bear. The storage unit 102 stores various programs and data used by the control unit 101 to perform various processes, and various data generated or acquired by the control unit 101 performing various processes.

The communication unit 103 has a wireless communication interface for connecting to the Internet 700 and communicates with the server 200 via the Internet 700 under the control of the control unit 101 .

The illumination unit 104 is, for example, a lighting fixture such as an LED (Light Emitting Diode), a fluorescent lamp, or a light bulb. The lighting unit 104 is turned on or off under the control of the control unit 101 . The lighting section 104 is an example of the first lighting means and the second lighting means according to the present invention.

The illuminance sensor unit 105 includes an illuminance sensor that detects the illuminance of sunlight at a first point or a second point where the lighting device 100 is installed. The illuminance sensor unit 105 detects illuminance under the control of the control unit 101 and outputs data of the detected illuminance to the control unit 101 .

Next, the hardware configuration of server 200 will be described in detail. As shown in FIG. 3 , the server 200 includes a control section 201 , a storage section 202 and a communication section 203 . These units are connected via a bus 204 .

The control unit 201 includes a CPU, ROM, and RAM, none of which are shown. In the control unit 201 , the CPU reads programs and data stored in the ROM, uses the RAM as a work area, and performs overall control of the server 200 .

The storage unit 202 is, for example, a non-volatile semiconductor memory such as flash memory, EPROM, EEPROM, or HDD, and serves as a so-called secondary storage device. The storage unit 202 stores various programs and data used by the control unit 201 to perform various processes, and various data generated or acquired by the control unit 201 performing various processes.

In this embodiment, the storage unit 202 stores lighting device position information 221 and house position information 222 . The lighting device position information 221 is information representing the position of the lighting device 100 . Specifically, lighting device position information 221 includes identification information for identifying lighting device 100 and the position of lighting device 100 in association with each other. The lighting device position information 221 may be acquired from the lighting device 100 in advance, or may be input by the user. The house location information 222 is information representing the location of the house. Specifically, the house position information 222 includes identification information for identifying the house H and the position of the house H in association with each other. The lighting device position information 221 may be obtained in advance from the control device 500 or may be input by the user.

The communication unit 203 has a communication interface for connecting to the Internet 700 and communicates with the lighting device 100 and the control device 500 via the Internet 700 under the control of the control unit 201 .

Next, the hardware configuration of control device 500 will be described in detail. As shown in FIG. 4 , control device 500 includes control unit 501 , storage unit 502 , in-home communication unit 503 , and out-of-home communication unit 504 . These units are connected via a bus 505 .

The control unit 501 includes a CPU, ROM, and RAM, none of which are shown. In the control unit 501 , the CPU reads programs and data stored in the ROM, uses the RAM as a work area, and performs overall control of the control device 500 .

The storage unit 502 is, for example, a non-volatile semiconductor memory such as flash memory, EPROM, EEPROM, or HDD, and serves as a so-called secondary storage device. The storage unit 502 stores various programs and data used by the control unit 501 to perform various processes, and various data generated or acquired by the control unit 501 performing various processes.

In this embodiment, storage unit 502 stores control schedule 521 . Control schedule 521 is a schedule for controlling the operation of electrical equipment 600 . The control schedule 521 may be appropriately updated by the control unit 501 based on the power consumption of the electrical equipment 600 and the power generation amount of the solar power generation facility 300 measured by the power measuring device 400, or may be set by the user. good.

The in-home communication unit 503 includes a communication interface for communicating via the in-house network built in the house H, and under the control of the control unit 501, the solar power generation equipment 300, the power measuring device 400, and the electrical equipment. 600 via the home network.

External communication unit 504 has a communication interface for connecting to Internet 700 , and communicates with server 200 via Internet 700 under the control of control unit 501 .

Next, functional configurations of the lighting device 100, the server 200, and the control device 500 will be described. FIG. 5 is a block diagram showing functional configurations of the lighting device 100, the server 200, and the control device 500. As shown in FIG.

First, the functional configuration of the illumination device 100 will be described. As shown in FIG. 5 , the lighting device 100 functions as an illuminance measurement unit 110 , a lighting control unit 111 , a detection unit 112 and a decrease time transmission unit 113 .

The illuminance measurement unit 110 measures the illuminance of sunlight at the point where the lighting device 100 is installed. Specifically, the illuminance measuring unit 110 of the lighting device 100a measures the first illuminance of sunlight at the first point where the lighting device 100a is installed, and the illuminance measuring unit 110 of the lighting device 100b measures the A second illuminance of sunlight is measured at the installed second point. The illuminance measurement unit 110 is an example of the first illuminance measurement unit and the second illuminance measurement unit according to the present invention, and is realized by the cooperation of the control unit 101 and the illuminance sensor unit 105 .

The lighting control unit 111 controls lighting of the lighting unit 104 based on the illuminance measured by the illuminance measuring unit 110 . Specifically, based on the first illuminance measured by the illuminance measuring unit 110, the lighting control unit 111 of the illuminating device 100a controls the lighting control unit 111 of the illuminating device 100b to control the second illuminance measured by the illuminance measuring unit 110. Lighting of the lighting unit 104 is controlled based on the illuminance. Specifically, the lighting control unit 111 periodically acquires the illuminance measured by the illuminance measurement unit 110, and when the acquired illuminance is smaller than a predetermined threshold value, turns on the illumination unit 104 and detects the acquired illuminance. is greater than or equal to a predetermined threshold value, the illumination unit 104 is turned off. The lighting control unit 111 is an example of first lighting control means and second lighting control means according to the present invention, and is implemented by the control unit 101 .

The detection unit 112 detects a decrease due to the clouds C in the illuminance measured by the illuminance measurement unit 110 . Specifically, the detection unit 112 of the lighting device 100a detects a decrease in the first illuminance measured by the illuminance measurement unit 110 due to the cloud C, and the detection unit 112 of the lighting device 100b detects that the illuminance measurement unit 110 measures A decrease in the second illuminance due to clouds C is detected. Specifically, the detection unit 112 periodically acquires the illuminance measured by the illuminance measurement unit 110, and determines that the illuminance has decreased when the acquired illuminance is smaller than a predetermined threshold. Furthermore, when the current time when it is determined that the illuminance has decreased is within the pre-stored daytime time period, the detection unit 112 detects that the illuminance has decreased due to the clouds C. is blocked, the measured illuminance is determined to have decreased. The detection unit 112 is an example of first detection means and second detection means according to the present invention, and is implemented by the control unit 101 .

The decrease time transmission unit 113 transmits to the server 200 the decrease time when the decrease in illuminance is detected by the detection unit 112 . Specifically, the decrease time transmission unit 113 of the lighting device 100a transmits to the server 200 the first decrease time at which the decrease in the first illuminance is detected by the detection unit 112, and the decrease time transmission unit 113 of the lighting device 100b , the detection unit 112 transmits to the server 200 the second decrease time when the decrease in the second illuminance is detected. Specifically, when the detection unit 112 detects a decrease in illuminance, the decrease time transmission unit 113 specifies the current time of the detection as the decrease time. Then, the deterioration time transmission unit 113 transmits identification information for identifying its own lighting device 100 stored in advance and the specified deterioration time to the server 200 . The decrease time transmission unit 113 is an example of the first decrease time transmission unit and the second decrease time transmission unit according to the present invention, and is realized by the cooperation of the control unit 101 and the communication unit 103 .

Next, the functional configuration of the server 200 will be described. As shown in FIG. 5 , the server 200 functions as a decrease time reception section 210 , an arrival time prediction section 211 and an arrival time transmission section 212 .

The decrease time reception unit 210 receives the decrease time from the lighting device 100 . Specifically, the decrease time reception unit 210 receives identification information for identifying the lighting device 100a and the first decrease time from the lighting device 100a. Further, the decrease time reception unit 210 receives identification information for identifying the lighting device 100b and the second decrease time from the lighting device 100b. Decrease time reception unit 210 is implemented by cooperation of control unit 201 and communication unit 203 .

The arrival time prediction unit 211 calculates a first decrease time, a second decrease time, a first distance between the first point and the second point, a second distance between the house H and the first point or the second point, The arrival time at which the cloud C reaches the house H is predicted based on . Specifically, based on the identification information of the lighting device 100a received together with the first deterioration time, the arrival time prediction unit 211 calculates the position P1(x1 , y1). Further, the arrival time prediction unit 211 calculates the position P2 (x2, y2) of the lighting device 100b from the lighting device position information 221 stored in the storage unit 202 based on the identification information of the lighting device 100b received together with the second decrease time. to get Also, the arrival time prediction unit 211 acquires the position P0 (x0, y0) of the house H from the house position information 222 stored in the storage unit 202 . Then, as shown in FIG. 1, the arrival time prediction unit 211 calculates the first distance d1 from the acquired positions P1 and P2. Also, the arrival time prediction unit 211 calculates a second distance d2 from the acquired positions P0 and P2. Then, the arrival time prediction unit 211 calculates the velocity v of the cloud C from the first decrease time t1 and the second decrease time t2 using the following formula.
v=d1/(t2-t1)
Then, the arrival time prediction unit 211 calculates the arrival time t3 at which the cloud C reaches the house H from the speed v of the cloud C using the following formula.
t3=d2/v+t2=(d2/d1)×(t2−t1)+t2
The arrival time prediction unit 211 is an example of arrival time prediction means according to the present invention, and is implemented by the control unit 201 .

Arrival time transmission section 212 transmits the arrival time predicted by arrival time prediction section 211 to control device 500 . The arrival time transmission unit 212 is implemented by the cooperation of the control unit 201 and the communication unit 203 .

Next, the functional configuration of the control device 500 will be described. As shown in FIG. 5 , the control device 500 functions as an arrival time reception section 510 , a device control section 511 and a control instruction transmission section 512 .

Arrival time receiving unit 510 receives the arrival time from server 200 . Arrival time reception section 510 is implemented by cooperation between control section 501 and external communication section 504 .

Device control section 511 controls the operation of electrical device 600 based on the arrival time received by arrival time receiving section 510 . Specifically, based on the control schedule stored in the storage unit 502, the device control unit 511 predicts the power consumed by the electrical device 600 and the power generated by the solar power generation equipment at the arrival time. , the power shortage at the arrival time is calculated. Based on the calculated power shortage, the device control unit 511 updates the control schedule 521 so that the power generation amount does not exceed the power consumption amount. The device control section 511 is an example of device control means according to the present invention, and is implemented by the control section 501 .

Here, temporal changes in the amount of power generated by the photovoltaic power generation facility 300 and the amount of power consumed by the electrical equipment 600 will be described with reference to FIGS. 6(a) and 6(b). FIG. 6(a) shows the time transition of the amount of power generated by the photovoltaic power generation equipment and the amount of power consumed by the electrical equipment in the conventional control system, and FIG. 6(b) shows the photovoltaic power generation in the control system 1 according to the present embodiment. FIG. 10 shows temporal changes in the amount of power generated by the equipment 300 and the amount of power consumed by the electrical equipment 600. FIG. As shown in FIG. 6(a), in a conventional control system that controls the power consumption of an electrical device according to the amount of power generation, when sunlight is blocked by clouds due to a sudden change in weather at arrival time t3, power generation Although the amount of power consumption decreases after the arrival time t3, the amount of power consumption is insufficient due to a time lag corresponding to the reaction time, since the suppression control of the power consumption also starts at the time t3. On the other hand, as shown in FIG. 6B, in the control system 1 according to the present embodiment, at the stage of the second decrease time t2, the reaction time is also taken into consideration, and by updating the control schedule 521 of the suppression control, , it is possible to avoid that the amount of power consumption exceeds the amount of power generation.

Control instruction transmission section 512 transmits a control instruction for controlling electrical apparatus 600 to electrical apparatus 600 according to control schedule 521 updated by apparatus control section 511 . Control instruction transmission section 512 is implemented by cooperation between control section 501 and in-home communication section 503 .

Next, operation of the control system 1 according to the embodiment of the present invention will be described. FIG. 7 shows a flowchart representing the flow of power consumption control processing executed by the lighting devices 100a and 100b, the server 200, the control device 500, and the electric device 600. As shown in FIG. The power consumption control process will be described below with reference to FIG. This processing is started by executing a program on the hardware of each device, and each device is realized by this processing. This process is started when the lighting device 100 determines that the illuminance has decreased due to the clouds C. As shown in FIG.

When the illumination device 100a detects a decrease in the first illuminance due to clouds C (step S11), it transmits the first decrease time to the server 200 (step S12). Also, when the illumination device 100b detects a decrease in the second illuminance due to clouds C (step S21), it transmits the second decrease time to the server 200 (step S22).

When the server 200 receives the first decrease time and the second decrease time from the lighting devices 100a and 100b (steps S31 and S32), the received first decrease time and second decrease time, the lighting devices 100a and 100b and the house H The arrival time of the cloud C is predicted based on the position of the cloud C (step S33).

The server 200 then transmits the predicted arrival time to the control device 500 (step S34).

When the control device 500 receives the arrival time from the server 200 (step S41), the control device 500 updates the control schedule 521 based on the received arrival time and the current control schedule 521 of the electric device 600 (step S42).

Then, control device 500 transmits a control instruction to electric device 600 according to the updated control schedule (step S43).

Then, upon receiving a control instruction from control device 500 (step S51), electric device 600 operates according to the received control instruction (step S52). Then, this processing ends.

As described above, according to the present embodiment, server 200 receives the time at which the illuminance has decreased from lighting devices 100a and 100b, the time at which the illuminance has decreased, the positions of lighting devices 100a and 100b, and house H. and the time of arrival of the cloud C at the house H are predicted. Then, server 200 transmits the predicted arrival time to control device 500, and control device 500 controls the operation of electric device 600 based on the received arrival time. Therefore, since an existing lighting device such as a street lamp can be used as a device for measuring illuminance, it is possible to control power consumption more accurately according to changes in weather at low cost.

(Embodiment 2)
In Embodiment 1 above, an example in which the lighting devices 100a and 100b are arranged in one direction has been described. However, the number of lighting devices 100 applicable to the control system 1 is not limited to two, and more lighting devices 100 may be used. In particular, by installing the lighting devices 100 at intervals of 100 to 200 m in a range of several kilometers or several tens of kilometers around the house H, it is possible to predict the movement of the clouds C in all directions around the house H. . Furthermore, when there are three or more lighting devices 100, the width of the cloud C can be calculated, the region through which the cloud C passes can be predicted, and when the house H exists within that region, the time of arrival can be transmitted. can. In the following embodiment, an example of predicting a region through which clouds pass will be described.

The arrangement of the illumination device 100 and the house H according to the present embodiment and the region through which the clouds C pass will be described with reference to FIG. 8 . In the example shown in FIG. 8, lighting devices L11 to L15, L21 to L25, L31 to L34, L41 to L43, L51, and L52 are arranged as the lighting device 100, and houses H35, H44, H45, H53 to H55 are arranged. When the server 200 determines that the deterioration times from the lighting devices L12 and L21 are the same among the deterioration times received from the lighting devices L11, L12, L21, and L22, based on the positions of the lighting devices L12 and L21, Calculate the width of the cloud C. Then, the server 200 predicts the area through which the cloud C passes from the direction of movement of the cloud C and the width w of the cloud, and calculates the arrival times of the clouds C for the houses H44, H45, H54, and H55 existing in that area. Predict. The server 200 then transmits the predicted arrival times to the control devices 500 of the houses H44, H45, H54, and H55.

Next, functional configurations of lighting device 100, server 200, and control device 500 according to the present embodiment will be described. FIG. 9 is a block diagram showing functional configurations of the lighting device 100, the server 200, and the control device 500. As shown in FIG. Server 200 differs from Embodiment 1 in FIG. 5 in that it further functions as cloud area prediction section 213 .

Furthermore, the control system 1 according to the present embodiment differs from the first embodiment in that it includes three or more lighting devices 100 . Therefore, the illuminance measurement unit 110 and the detection unit 112 of the illumination device 100 shown in FIG. 9 are also examples of the third illuminance measurement means and the third detection means, respectively, according to the present invention. The illuminance measuring unit 110, which is the third illuminance measuring unit, measures the third illuminance of sunlight at the third point where the lighting device 100 including the illuminance measuring unit 110, which is the third illuminance measuring unit, is installed.

When two of the degradation times received from three or more lighting devices 100 are the same, cloud region prediction section 213 predicts the cloud region based on the distance between the points where the lighting devices 100 are installed. Predict the region through which C passes. Specifically, when the difference between the decrease time received from lighting device L12 and the decrease time received from lighting device L21 shown in FIG. It is determined that the two decrease times are the same time. Then, the cloud region prediction unit 213 acquires the positions of the lighting devices L12 and L21 from the lighting device position information 221, and calculates the distance between the lighting devices L12 and L21 as the width w of the cloud C. calculate. Then, the cloud area prediction unit 213 identifies the moving direction of the cloud from the lighting devices L11, L12, L21, and L22 that are the transmission sources of the decrease time, and determines whether the cloud is moving in the moving direction and has a width w of the cloud. Identify as a region to pass through. Cloud area prediction unit 213 is an example of cloud area prediction means according to the present invention, and is implemented by control unit 201 .

Then, the arrival time prediction unit 211 predicts the arrival time to the house H when the house H exists in the region through which the cloud C predicted by the cloud region prediction unit 213 passes. Specifically, as shown in FIG. 8, the arrival time prediction unit 211 identifies the house H existing within the region predicted by the cloud region prediction unit 213 based on the house position information 222. FIG. Then, when the arrival time prediction unit 211 determines that the houses H44, H45, H54 and H55 exist within the region, the arrival time prediction unit 211 determines the positions of the houses H44, H45, H54 and H55 based on the positions of the houses H44, H45, H54 and H55. Predict the arrival time of cloud C to . Then, the arrival time transmission unit 212 transmits the predicted arrival time to the control device 500 of each house H44, H45, H54, H55.

With the above configuration, the control system 1 according to the present embodiment predicts the area through which the cloud C passes based on the time when the illuminance from the three or more lighting devices 100 decreases, and for the house H in that area, The arrival time of cloud C can be predicted.

(Embodiment 3)
In Embodiments 1 and 2 above, an example in which lighting device 100 detects a decrease in illuminance has been described. However, the server 200 may detect the decrease in illuminance instead of the lighting device 100 . An example in which the server 200 detects a decrease in illuminance will be described below as a third embodiment.

Next, functional configurations of lighting device 100, server 200, and control device 500 according to the present embodiment will be described. FIG. 10 is a block diagram showing functional configurations of the lighting device 100, the server 200, and the control device 500. As shown in FIG. Compared with Embodiment 1 in FIG. 5 , lighting device 100 according to the present embodiment does not include detector 112 and includes illuminance transmitter 114 instead of decrease time transmitter 113 . In addition, server 200 according to the present embodiment further includes detector 215 and illuminance receiver 214 instead of decrease time receiver 210 .

The illuminance transmission unit 114 periodically transmits the illuminance measured by the illuminance measurement unit 110 to the server 200 . Specifically, the illuminance transmitting unit 114 of the lighting device 100 a periodically transmits the first illuminance measured by the illuminance measuring unit 110 to the server 200 , and the illuminance transmitting unit 114 of the lighting device 100 b periodically transmits the second illuminance measured by to the server 200 . Specifically, the illuminance transmitting unit 114 periodically transmits identification information for identifying its own lighting device 100 stored in advance and the measured illuminance to the server 200 . The illuminance transmission unit 114 is an example of first illuminance transmission means and second illuminance transmission means according to the present invention, and is realized by cooperation between the control unit 101 and the communication unit 103 .

The illuminance receiving unit 214 periodically receives illuminance from the lighting device 100 . Specifically, the illuminance receiving unit 214 receives identification information for identifying the illuminating device 100a and the first illuminance from the illuminating device 100a. In addition, the illuminance receiving unit 214 receives identification information for identifying the illuminating device 100b and the second illuminance from the illuminating device 100b. The illuminance receiving unit 214 is an example of first illuminance receiving means and second illuminance receiving means according to the present invention, and is realized by the cooperation of the control unit 201 and the communication unit 203 .

The detector 215 detects a decrease in illuminance due to clouds C based on the illuminance received by the illuminance receiver 214 . Specifically, the detection unit 215 detects a decrease in the first illuminance based on the first illuminance periodically transmitted from the lighting device 100a. Further, the detection unit 215 detects a decrease in the second illuminance based on the second illuminance periodically transmitted from the lighting device 100b. A method similar to that of the first embodiment can be adopted as a method of detecting a decrease in illuminance. The detection unit 215 is an example of first detection means and second detection means according to the present invention, and is implemented by the control unit 201 .

Then, the arrival time prediction unit 211 sets the time when the detection unit 215 detects the decrease in the first illuminance as the first decrease time, and the time when the decrease in the second illuminance is detected as the second decrease time. The arrival time of cloud C is predicted in the same manner as .

With the above configuration, control system 1 according to the present embodiment detects a decrease in illuminance by having server 200 periodically receive illuminance from lighting device 100, and detects a decrease in illuminance based on the time at which the decrease in illuminance is detected. , the arrival time of the cloud C can be predicted.

Although the embodiment of the present invention has been described above, the above embodiment is an example, and the scope of application of the present invention is not limited to this. That is, the embodiments of the present invention can be applied in various ways, and all embodiments are included in the scope of the present invention.

For example, in Embodiments 1 to 3 above, two or more lighting devices 100 measure the illuminance and transmit the measured decrease in illuminance or the illuminance to the server 200 . However, some of the two or more lighting devices 100 may not have the lighting function. For example, existing photovoltaic power generation equipment may be used to realize the illuminance measurement device according to the present invention. In this case, the second photovoltaic power generation means according to the present invention is realized by a PV panel that generates electrical energy from sunlight, and the illuminance is measured based on the electrical energy generated by the PV panel. can be realized.

Further, in Embodiments 1 to 3 above, an example has been described in which the position of lighting device 100 is stored as lighting device position information 221 in storage unit 202 in advance. However, the position of lighting device 100 does not have to be stored in storage unit 202 in advance. You may transmit to the server 200.

The server 200 may also transmit to the control device 500 information representing the area through which the cloud C passes, together with the arrival time of the cloud C. FIG. In this case, control device 500 may vary the content of control of electric device 600 according to the position of house H in the region through which cloud C passes. That is, it is considered that the probability or degree of illuminance reduction will differ depending on whether the house H is located at the center of the cloud or at the edge of the cloud. Therefore, control device 500 calculates the probability or degree of occurrence of a decrease in illuminance based on the region through which cloud C passes and the position of house H, and adjusts the control schedule for electric device 600 according to the probability or degree of occurrence. You may update.

Further, all or part of the functions of the server 200 of the first to third embodiments may be realized by the control device 500. FIG.

In addition to being able to provide a server 200 having a configuration for realizing the functions according to the present invention, it is also possible to make an existing personal computer or information terminal device function as the server 200 according to the present invention by applying a program. can also That is, existing personal computers or information terminal devices can be programmed to execute programs for realizing each functional configuration of the server 200 illustrated in the above embodiment. By applying it, it can function as the server 200 according to the present invention. Also, the control method according to the present invention can be implemented using the server 200 .

Moreover, the application method of such a program is arbitrary. For example, the program can be applied by storing it in a computer-readable recording medium [CD-ROM (Compact Disc Read-Only Memory), DVD (Digital Versatile Disc), MO (Magneto Optical disc), etc.], Internet, etc. The program can also be applied by storing the program in a storage on the network and downloading it.

1 control system, 100, 100a, 100b lighting device, 101 control unit, 102 storage unit, 103 communication unit, 104 lighting unit, 105 illuminance sensor unit, 106 bus, 110 illuminance measurement unit, 111 lighting control unit, 112 detection unit, 113 Decrease time transmission unit 114 Illuminance transmission unit 200 Server 201 Control unit 202 Storage unit 203 Communication unit 204 Bus 210 Decrease time reception unit 211 Arrival time prediction unit 212 Arrival time transmission unit 213 Cloud region Prediction unit 214 Illuminance reception unit 215 Detection unit 221 Lighting device position information 222 House position information 300 Solar power generation equipment 301 PV panel 302 PV-PCS 400 Power measurement device 500 Control device 501 Control unit , 502 storage unit, 503 in-home communication unit, 504 out-of-home communication unit, 505 bus, 510 arrival time reception unit, 511 device control unit, 512 control instruction unit, 521 control schedule, 600 electric equipment, 700 Internet, 800 distribution board , 900 commercial power system

Claims (11)

a first illuminance measuring means for measuring a first illuminance of sunlight at a first point;
a first lighting control means for controlling lighting of the first lighting means installed at the first point based on the first illuminance measured by the first illuminance measuring means;
a first detection means for detecting a decrease due to clouds in the first illuminance measured by the first illuminance measurement means;
a second illuminance measuring means for measuring a second illuminance of sunlight at a second point different from the first point;
a second detection means for detecting a decrease due to the cloud in the second illuminance measured by the second illuminance measurement means;
a first photovoltaic power generation means installed in a house to generate electrical energy from sunlight;
equipment control means for controlling electrical equipment installed in the house using the electrical energy generated by the first solar power generation means;
A first decrease time when a decrease in the first illumination is detected by the first detection means, a second decrease time when a decrease in the second illumination is detected by the second detection means, the first point and the Arrival time prediction means for predicting an arrival time when the cloud reaches the house based on a first distance from the second point and a second distance between the house and the first point or the second point. When,
with
The device control means controls the operation of the electrical device based on the arrival time predicted by the arrival time prediction means.
control system. a third illuminance measuring means for measuring a third illuminance of sunlight at a third point different from the first point and the second point;
a third detection means for detecting a decrease due to the clouds in the third illuminance measured by the third illuminance measurement means;
When the third decrease time at which the decrease in the third illuminance is detected by the third detection means and the first decrease time are the same time, based on the distance between the first point and the third point , cloud area prediction means for predicting an area through which the cloud passes;
further comprising
The arrival time prediction means predicts the arrival time when the house exists within the region predicted by the cloud region prediction means through which the cloud passes.
A control system according to claim 1 . The control system further includes a lighting device, an illuminance measuring device, and a server,
The lighting device
the first illuminance measuring means;
the first lighting means;
the first lighting control means;
the first detection means;
a first decrease time transmission means for transmitting the first decrease time to the server;
with
The illuminance measurement device is
the second illuminance measuring means;
the second detection means;
a second decrease time transmission means for transmitting the second decrease time to the server;
with
The server comprises the arrival time prediction means,
The arrival time prediction means receives the first decrease time transmitted by the first decrease time transmission means, the second decrease time transmitted by the second decrease time transmission means, the first distance, the predicting the arrival time based on a second distance;
3. Control system according to claim 1 or 2. The control system further includes a lighting device, an illuminance measuring device, and a server,
The lighting device
the first illuminance measuring means;
the first lighting means;
the first lighting control means;
a first illuminance transmitting means for periodically transmitting the first illuminance to the server;
with
The illuminance measurement device is
the second illuminance measuring means;
a second illuminance transmitting means for periodically transmitting the second illuminance to the server;
with
The server is
the first detection means;
the second detection means;
comprising the arrival time prediction means;
the first detection means detects a decrease in the first illuminance due to the cloud based on the first illuminance transmitted by the first illuminance transmission means;
The second detection means detects a decrease in the second illuminance due to the cloud based on the second illuminance transmitted by the second illuminance transmission means.
3. Control system according to claim 1 or 2. The illuminance measurement device is
a second lighting means installed at the second point;
a second lighting control means for controlling lighting of the second lighting means based on the second illuminance measured by the second illuminance measuring means;
further comprising
Control system according to claim 3 or 4. The illuminance measuring device further comprises a second photovoltaic power generation means installed at the second point for generating electrical energy from sunlight,
The second illuminance measurement means measures the second illuminance based on the electrical energy generated by the second solar power generation means.
Control system according to claim 3 or 4. A server communicably connected to a lighting device installed at a first point, an illuminance measuring device installed at a second point different from the first point, and a control device,
a first drop time receiving means for receiving, from the lighting device, a first drop time at which a drop due to clouds is detected in the first illuminance of sunlight at the first point;
a second drop time receiving means for receiving, from the illuminance measuring device, a second drop time at which a drop due to clouds is detected in the second illuminance of sunlight at the second point;
a first decrease time received by the first decrease time receiving means, a second decrease time received by the second decrease time receiving means, a first distance between the first point and the second point; Predicting the arrival time of the clouds at the house based on the second distance between the house in which the photovoltaic power generation means for generating electric energy from sunlight is installed and the first point or the second point an arrival time predicting means for
arrival time transmission means for transmitting the arrival time predicted by the arrival time prediction means to the control device;
A server with A server communicably connected to a lighting device installed at a first point, an illuminance measuring device installed at a second point different from the first point, and a control device,
a first illuminance receiving means for periodically receiving a first illuminance of sunlight at the first point from the lighting device;
a second illuminance receiving means for periodically receiving a second illuminance of sunlight at the second point from the illuminance measuring device;
Based on the first illuminance received by the first illuminance receiving means, a decrease in the first illuminance due to clouds is detected, and based on the second illuminance received by the second illuminance receiving means, the second illuminance is detected. detection means for detecting a decrease in illuminance due to the clouds;
A first decrease time when a decrease in the first illuminance is detected by the detection means, a second decrease time when a decrease in the second illuminance is detected by the detection means, and a second time between the first point and the second point The cloud reaches the house based on the first distance and the second distance between the house in which a photovoltaic power generation means for generating electric energy from sunlight is installed and the first point or the second point. arrival time prediction means for predicting arrival time;
arrival time transmission means for transmitting the arrival time predicted by the arrival time prediction means to the control device;
A server with a first illuminance measurement step of measuring a first illuminance of sunlight at a first point;
A lighting control step of controlling lighting of the first lighting means installed at the first point based on the first illuminance measured in the first illuminance measuring step;
a first detection step of detecting a decrease due to clouds in the first illuminance measured by the first illuminance measurement step;
a second illuminance measuring step of measuring a second illuminance of sunlight at a second point different from the first point;
a second detection step of detecting a decrease due to the cloud in the second illuminance measured in the second illuminance measurement step;
a device control step of controlling an electrical device installed in a house using electrical energy generated by a photovoltaic power generation means that is installed in the house and generates electrical energy from sunlight;
A first decrease time at which a decrease in the first illuminance is detected in the first detection step, a second decrease time at which a decrease in the second illuminance is detected in the second detection step, the first point and the A time-of-arrival prediction step of predicting a time of arrival of the cloud at the house based on a first distance from the second point and a second distance between the house and the first point or the second point. When,
with
The device control step controls the operation of the electrical device based on the arrival time predicted in the arrival time prediction step.
control method. A computer communicatively connected to a lighting device installed at a first point, an illuminance measuring device installed at a second point different from the first point, and a control device,
a first drop time receiving means for receiving, from the lighting device, a first drop time at which a drop due to clouds is detected in the first illuminance of sunlight at the first point;
A second drop time receiving means for receiving, from the illuminance measuring device, a second drop time at which a drop due to clouds is detected in the second illuminance of sunlight at the second point;
a first decrease time received by the first decrease time receiving means, a second decrease time received by the second decrease time receiving means, a first distance between the first point and the second point; Predicting the arrival time of the clouds at the house based on the second distance between the house in which the photovoltaic power generation means for generating electric energy from sunlight is installed and the first point or the second point arrival time prediction means for
arrival time transmission means for transmitting the arrival time predicted by the arrival time prediction means to the control device;
A program that acts as a A computer communicatively connected to a lighting device installed at a first point, an illuminance measuring device installed at a second point different from the first point, and a control device,
first illuminance receiving means for periodically receiving a first illuminance of sunlight at the first point from the lighting device;
Second illuminance receiving means for periodically receiving a second illuminance of sunlight at the second point from the illuminance measuring device;
Based on the first illuminance received by the first illuminance receiving means, a decrease in the first illuminance due to clouds is detected, and based on the second illuminance received by the second illuminance receiving means, the second illuminance is detected. detection means for detecting a decrease in illuminance due to the clouds;
A first decrease time when a decrease in the first illuminance is detected by the detection means, a second decrease time when a decrease in the second illuminance is detected by the detection means, and a second time between the first point and the second point The cloud reaches the house based on the first distance and the second distance between the house in which a photovoltaic power generation means for generating electric energy from sunlight is installed and the first point or the second point. arrival time prediction means for predicting arrival time;
arrival time transmission means for transmitting the arrival time predicted by the arrival time prediction means to the control device;
A program that acts as a

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