JP2000035826A - Load control system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To surely grasp what degree the power consumption of load to be controlled reaches. SOLUTION: This system, for instance, consists of a master controller 22 and lighting controllers 20-1 and 20-2 which perform dimming control of fluorescent lighting luminaires 11a, 11b, 11c, 12a and 12b with various conditions based on a control signal from the controller 22 through a communication line 21. Here, the controller 22 is provided with a storing part which previously stores various condition data of when each lighting controller performs dimming control of luminaires, i.e., the number of luminaires, the effective value of input voltage, dimming control quantity and the effective value and power factor of input current in every dimming control quantity and also stores condition data of when the controllers 20-1 and 20-2 actually perform dimming control of the luminaires based on a control signal, i.e., dimming control quantity and an operating part which operates the power consumption of the luminaires controlled by the controllers 20-1 and 20-2 from the various condition data of the storing part and condition data stored when the luminaires are driven.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a load control system for driving and controlling a fluorescent lamp, an air conditioner and the like as a load.

[0002]

2. Description of the Related Art In recent years, energy saving of various devices has been promoted. On the other hand, in facilities such as factories and offices, the number of electric devices such as lighting fixtures, air conditioners, personal computers, and home appliances has increased. And the total amount of power tends to increase. For this reason, it is becoming important for the manager of each facility to take measures to reduce the power consumption by the electric equipment.

For example, a system shown in FIG. 15 is known as a system for reducing the power consumption by controlling the dimming of a fluorescent lamp lighting fixture as a load.
In this case, the lighting fixtures 1a, 1b, and 1c having a dimming function are grouped into one group, and the power supply terminals of the lighting fixtures 1a, 1b, and 1c are connected to the commercial power supply 3 via power switches 2a, 2b, and 2c, respectively. Lighting equipment with dimming function 1
d, 1b, and 1c as one group, and the power terminals of the lighting fixtures 1d, 1e, and 1f are respectively connected to the power switch 2
It is connected to the commercial power supply 3 via d, 2e, 2f.

[0004] Each of the lighting fixtures 1a, 1b, 1c
Are connected to a lighting control device 4a for controlling the dimming of each lighting device, and the dimming terminals of the lighting devices 1d, 1e, 1f are connected to a lighting control device for controlling the dimming of each lighting device. 4b. Each of the lighting control devices 4a, 4b
Is connected to a main controller 6 via a communication line 5, and receives a control signal from the main controller 6 to control dimming of each lighting fixture.

[0005] The main control unit 6 sends the signals to the lighting control units 4a and 4a.
As shown in FIG. 16, the format of the control signal to be transmitted to the illumination control devices 4a and 4b is the synchronization signal and the transmission destination.
An address signal for designating the address b and a control signal for designating control contents such as the amount of light control when the lighting control devices 4a and 4b control each lighting fixture.

The main controller 6, as shown in FIG. 17, comprises an input section 6a, a signal processing section 6b, and a signal transmission section 6c. When data for control is inputted from the operation section to the input section 6a, the main control apparatus 6 receives a signal. The processing unit 6b converts the signal into a signal suitable for the control content, and the signal transmitting unit 6c converts the converted signal into a signal line 5
Is transmitted to each of the lighting control devices 4a and 4b via the. The data input to the input unit 6a can be directly input from the operation unit or can be input via the network 7.

Each of the lighting control devices 4a and 4b is a
As shown in FIG. 3, the control unit comprises a receiving unit 8a, a data processing unit 8b, an address setting unit 8c, and a control unit 8d.
a is received and passed to the data processing unit 8b. The address setting unit 8c has its own unique address set, and the data processing unit 8b determines whether or not the address signal included in the received control signal matches the self address set in the address setting unit 8c. Judge
The control signal received is passed to the control unit 8d only when they match. The control unit 8d sends a lighting control output to the lighting fixture based on the control signal, and performs dimming control.

In such a system, for example, assuming that the luminaires 1a, 1b, 1c are arranged on the window side ceiling of the room and the luminaires 1d, 1e, 1f are arranged on the wall side ceiling of the room, When daylight is incident from the window, main controller 6 transmits a control signal for dimming control of each lighting fixture 1a, 1b, 1c to 60% of brightness to lighting controller 4a, A control signal for controlling the dimming of each of the lighting fixtures 1d, 1e, 1f with 90% brightness is transmitted to the lighting control device 4b.

Then, at night, the main controller 6 controls the respective lighting control devices 4a and 4b to control the respective lighting fixtures 1a to 1f.
Is transmitted as a control signal for 100% all light. By performing such control, the illuminance in the room can always be controlled to a certain brightness, and energy saving can be achieved.

[0010]

However, in such a system, it is possible to control the dimming of each luminaire according to the situation, but how much power is consumed by each luminaire?
Further, for example, there is a problem that information necessary for management by an administrator such as how much power is consumed in a day and how much energy can be saved can not be obtained.

Therefore, the first aspect of the present invention provides a load control system capable of reliably grasping the power consumption of a load to be controlled. Further, the inventions according to claims 2 and 3 provide a load control system capable of surely knowing the power consumption of the load to be controlled.

[0012]

According to the first aspect of the present invention,
A main controller and a load controller that drives and controls the load under various conditions based on a control signal received from the main controller via a communication line; the main controller controls when the load controller drives and controls the load. A storage unit that stores in advance various condition data and stores condition data when the load control device actually drives and controls the load based on the control signal,
The storage unit includes a calculation unit for calculating the power consumption of the load from various condition data stored in advance and the condition data stored during driving of the load.

According to a second aspect of the present invention, there is provided a main controller and a load controller for driving and controlling a load under various conditions based on a control signal received from the main controller via a communication line. A clock circuit that measures the time, various condition data when the load control device drives and controls the load, and condition data when the load control device actually drives and controls the load based on the control signal. A storage unit for receiving and storing the time data at which the driving is started under the condition data from the clock circuit and storing the load data based on various condition data stored in advance in the storage unit and the condition data and the time data stored during the load driving. And a calculation unit for calculating the power consumption.

According to a third aspect of the present invention, there is provided a main controller and a load controller for driving and controlling a load under various conditions based on a control signal received from the main controller via a communication line. A clock circuit that measures the time, various condition data when the load control device drives and controls the load, and condition data when the load control device actually drives and controls the load based on the control signal. A storage unit for receiving and storing the time data at which the driving is started under the condition data from the clock circuit, various condition data stored in advance in the storage unit, the condition data and the time data stored at the time of driving the load, and a clock circuit. And a calculation unit for calculating the power consumption of the load from the time measured by the clock.

[0015]

Embodiments of the present invention will be described with reference to the drawings. (First Embodiment) In this embodiment, only a lighting fixture is used as a load, and the present invention is applied to control of the lighting fixture. In FIG. 1, 11a, 11
Reference numerals b and 11c denote fluorescent lamp lighting devices with dimming function of the first group, 12a and 12b fluorescent lighting devices with dimming function of the second group, and 13a, 13b,. It is a lighting fixture.

Each of the fluorescent lighting devices 11a, 11b, 1
1c are connected to power switches 14a, 14a, respectively.
b, 14c are connected to a 200V power supply 15.
The power terminals of the fluorescent lighting devices 12a and 12b are connected to a 100V power supply 17 via power switches 16a and 16b, respectively. Each of the fluorescent lighting devices 13a, 1
3b are connected to power switches 18a, 1 respectively.
8b,... Are connected to a 100V power supply 19.

Further, each of the fluorescent lighting devices 11a, 11
b, 11c are connected to the lighting control device 20-1, and the dimming terminals of each of the fluorescent lighting devices 12a, 12b are connected to the lighting control device 20-2. The light control terminals 13a, 13b,.
Connected to. Each of the lighting control devices 20-1, 20-2,
20-n is connected to the main controller 22 via a communication line 21.

As shown in FIG. 2, the main control unit 22 includes an input unit 22a, a signal processing unit 22b, and a signal transmission unit 22.
c, a storage unit 22d, a clock circuit 22e, a calculation unit 22f, and a power display unit 22g. The input unit 22a is configured to capture input data from the operation unit and capture input data from the network 23. .

The input data received by the input section 22a is passed to the signal processing section 22b, which converts the input data into a control signal suitable for the content of control. Then, the control signal converted by the signal processing unit 22b is passed to the signal transmission unit 22c, and the signal transmission unit 22c transmits the control signal via the communication line 21 to each of the lighting control devices 20-1, 20-2, 20
-n.

The storage unit 22d stores, as shown in FIG.
Address numbers corresponding to the respective lighting control devices 20-1, 20-2, 20-n, and the respective lighting control devices 20-1, 20-2, 20-n
The number of fluorescent lamp lighting fixtures connected to, the effective value of the input voltage, various dimming control amounts, and the data of the effective value and power factor of the input current for each of the various dimming control amounts are preset as condition data. A table 24 is provided. As shown in FIG. 5, when the control signal converted by the signal processing unit 22b is transmitted from the signal transmission unit 22c, the address number and the dimming control amount in the control signal are stored as condition data. Is provided with a storage area 25 for receiving and storing the time data from the clock circuit 22e. The storage unit 22d is configured by a storage medium such as a hard disk, a ROM, a PROM, and a RAM when the main control device 22 includes a computer such as a personal computer.

The arithmetic unit 22f reads the address number and the dimming control amount stored in the storage area 25 of the storage unit 22d and, based on the read address number and the dimming control amount, reads the corresponding number from the table 24. , The effective value of the input voltage, the effective value of the input current, and the condition data of the power factor are read, and based on the read data, the instantaneous power consumption of the fluorescent lighting equipment controlled by the corresponding lighting control device is calculated. . Further, the time during which the corresponding lighting control device is driving the fluorescent lighting equipment is obtained from the time data stored in the storage area 25 and the time measured by the clock circuit 22e. The amount is calculated. Then, the calculated instantaneous power consumption and power consumption are displayed on the power display unit 22g.

Each of the lighting control devices 20-1, 20-2, 20
As shown in FIG. 3, -n includes a receiving unit 26a, a data processing unit 26b, an address setting unit 26c, and a control unit 26d, and transmits a control signal transmitted from the main control device 22 through the communication line 21 to the control signal. The receiving unit 26a receives the data and passes it to the data processing unit 26b. The address setting unit 26c has a unique address set therein, and the data processing unit 26b determines that the address signal included in the received control signal matches the self address set in the address setting unit 26c. The control unit 2 determines whether or not the control signal is received only when there is a match.
6d. The control unit 26d sends out a lighting control output to the lighting fixture based on the control signal to perform dimming control.

In such a configuration, main controller 2
2 is the lighting control device 20 corresponding to the address number “01”
A control signal for lighting the lighting fixtures 11a, 11b, and 11c with 100% all-light for -1 is given on Feb. 1, 1998.
It was transmitted at 8:00 on the 4th, and the lighting fixtures 11a, 1
Assuming that a control signal for lighting 1b and 11c with a dimming control amount of 25% is transmitted at 8:30 on the same day, the instantaneous power consumption P at 8:00 is determined by the effective value of the input power being 20%.
0 V, effective value of input current is 487 mA, power factor is 98.9
%, P = 200V × 487mA × 98.9%
From ３3 (units), the power becomes approximately 289 W, which is displayed on the power display unit 22g.

The instantaneous power consumption P at 8:30 is as follows: P = 200 V × 185 mA × 93.6% × 3
(Unit), the power becomes approximately 104 W, which is the power display unit 22.
g. For example, when the time of the clock circuit 22e is 8:36, when the power consumption E from 8:00 is obtained at 8:36, E = 289W × 0.5h
+ 104W × 0.1h = 154.9Wh, which is displayed on the power display unit 22g.

As described above, when the dimming control amount is changed, how much instantaneous power consumption of the lighting fixtures 11a, 11b, and 11c driven and controlled by the lighting control device 20-1 is changed for each dimming control amount. The power display unit 22g of the main control device 22 can surely determine whether the power supply is turned off. Also, from a certain time to a certain time, the power display unit 22g of the main control device 22 can surely know the power consumption of the lighting fixtures 11a, 11b, and 11c that are driven and controlled by the lighting control device 20-1. it can. Therefore, the administrator can easily execute measures for energy saving from the power consumption and the power consumption.

In this embodiment, the storage unit 22d
As the condition data stored in advance in the table 24, the number of fluorescent lamp luminaires, the effective value of the input voltage, the various dimming control amounts, the effective value of the input current for each of the various dimming control amounts, corresponding to the address number Although the case where each data of the power factor and the power factor are set has been described, the present invention is not necessarily limited to this.

For example, as shown in FIG. 6, corresponding to the address number, the number of fluorescent lighting devices, various dimming control amounts, and power data calculated in advance for each of the various dimming control amounts are set as condition data. Table 24a may be used. Further, as shown in FIG. 7, a table 24b in which a function for obtaining the number of fluorescent lighting devices and the power consumption P is set corresponding to the address number may be used.

As a function, for example, the lighting fixtures 13a and 13a controlled by the lighting control device 20-n at the address n are used.
The power consumption P of b,...
The calculation unit 22f calculates the power consumption P = function from the control amount xn and the function fn (xn) stored in the table 24b of the storage unit 22d by using the function fn (xn) of the control amount xn. By calculating fn (xn), instantaneous power consumption can be calculated.

FIG. 8 is a graph showing the relationship of P = fn (xn). Then, by integrating the function over time, the power consumption can be obtained. If the power consumption and the power consumption are calculated by the functions as described above, the data capacity to be stored in the table can be sufficiently reduced as compared with the case where the condition data for each dimming control amount is stored. The lighting control devices 20-1, 20-2, 20-n
It is needless to say that the number of lighting fixtures connected to is not limited to that of this embodiment.

(Second Embodiment) As shown in FIG. 9, a fluorescent lamp lighting fixture 31 with a dimming function is used as a load.
a, 31b, 31c, air conditioner 32, other electric equipment 3
3 and the like, and these are controlled by the main controller 34. Each of the lighting fixtures 31a, 31b, 31c
The power terminal of the air conditioner 32 is connected to a power source 38 via a power switch 37, and the electric device 33 is connected to a power source 40 via a power switch 39. Connected.

The lighting fixtures 31a, 31b,
The light control terminal 31c is connected to the load control device 41, the control terminal of the air conditioner 32 is connected to the load control device 42, and the control terminal of the electric device 33 is connected to the load control device 43. Each of the load control devices 41, 42, 43 is connected to the main control device 34 via a communication line 44.

The load control device 41 has a configuration similar to that of the above-described lighting control device 20-1, and controls the dimming of each of the lighting fixtures 31a, 31b, 31c according to a control signal from the main control device 34. The load control device 42 is a main control device 3
The load control device 43 controls the drive of the electric device 33 according to the control signal from the main control device 34. Each of the load control devices 41, 42, 43 has an address 01, 02,
03 is set. The main controller 34 has the same configuration as the main controller 22 described above.

As described above, the lighting equipment 31a,
In addition to the air conditioners 32b and 31c, the air conditioners 32 and other electric devices 33
Is connected, the effective value of the input voltage, the effective value of the input current, and the power factor to the air conditioner 32 and other electric devices 33 are set in the storage unit of the main control device 34 as in the above-described embodiment. This makes it possible to grasp the instantaneous power consumption and the power consumption in a certain period of time. Therefore, the same effects as those of the first embodiment can be obtained.

(Third Embodiment) In this embodiment, only a lighting fixture is used as a load, and the present invention is applied to control of the lighting fixture. In FIG.
Reference numerals 51a, 51b, and 51c denote fluorescent lamp luminaires of the first group, and reference numerals 52a and 52b denote fluorescent lamp luminaires of the second group, which are luminaires having no dimming function.

Each of the fluorescent lighting devices 51a, 51b, 5
1c is connected to an illumination power supply output line 54-1 from the illumination control device 53-1 and the fluorescent lamp illuminators 52a and 5c are connected.
The power terminal 2b is connected to a lighting power output line 54-1 from the lighting control device 53-2. Each lighting control device 53-
1, 53-2 are connected to a main controller 56 via a communication line 55 and to a commercial power supply 58 via a power line 57. The main controller 56 is the main controller 2 described above.
2 has the same configuration as that of FIG.

As shown in FIG. 11, each of the illumination control devices 53-1 and 53-2 includes a receiving unit 59a and a data processing unit 59.
b, an address setting section 59c, and a control section 59d. A control signal transmitted from the main control device 56 via a signal line 55 is received by a receiving section 59a and passed to a data processing section 59b. The address number included in the control signal is compared with the address number set in the address setting unit 59c, and when they match, the control signal is sent to the control unit 59c.
d.

Upon receiving the control signal, the control section 59d turns on the built-in relay circuit when the control command is turned on, based on the control command in the control signal, and transfers the power from the power supply line 57 to the illumination power supply. It is sent out as an output, and when the control command is off, the relay circuit is turned off.

As shown in FIG. 12, the main controller 56 includes an input section 56a, a signal processing section 56b, and a signal transmission section 56.
c, a storage unit 56d, a clock circuit 56e, an operation unit 56f, a display unit 56g, and a sound generation unit 56h. The input unit 56a performs input data input from the operation unit and input data input from the network 60. It has become. The functions of the input unit 56a, the signal processing unit 56b, the signal processing unit 56b, and the clock circuit 56e are the same as those of the input unit 22a, the signal processing unit 22b, the signal processing unit 22b, and the clock circuit 22e of the first embodiment. The same is true.

As shown in FIG. 13, the storage unit 56d stores address numbers corresponding to the respective lighting control devices 53-1 and 53-2, and fluorescent light connected to the respective lighting control devices 53-1 and 53-2. In addition to providing a table 61 in which the data of the number of the lighting devices, the control information of turning on and off, and the power consumption at the time of turning on are set as condition data, the lighting control device 53-
Address numbers corresponding to 1, 53-2, lighting control information,
A table 62 is provided in which the lamp life of the fluorescent lamp mounted on the lighting fixture is set in advance as a lighting limit number.

As shown in FIG. 14, the address number and control information in the control signal when the control signal is transmitted from the signal transmission section 56c of the main controller 56 are stored as condition data, and the time at that time is stored. A storage area 63 for receiving and storing data from the clock circuit 56e is provided. The storage unit 56d is configured by a storage medium such as a hard disk, a ROM, a PROM, and a RAM when the main control device 56 is configured by a computer such as a personal computer.

The arithmetic unit 56f reads the address number and the control information stored in the storage area 63 of the storage unit 56d, and based on the read address number and the control information, from the table 61, the corresponding number and the power consumption. The condition data is read, and based on the condition data, the instantaneous power consumption of the fluorescent lighting equipment controlled by the corresponding lighting control device is calculated. Further, the time during which the corresponding lighting control device is driving the fluorescent lamp lighting fixture is obtained from the time data stored in the storage area 63, and the power consumption for a certain time is calculated from this and the power consumption. . Then, the calculated instantaneous power consumption and power consumption are displayed on the display unit 56g.

The arithmetic section 56f is provided with a counter therein and counts the number of lightings for each address by the counter. That is, since the lamp life can be estimated by the number of times the lamp is turned on and off, the lamp life is determined based on the number of times the lamp is turned on. The number of times the lamp is turned on by the counter is stored in
When the number of times the lamp life has reached the limit set in
It is determined that the lamp has reached the end of its life, and the
And the voice generating unit 56h is driven to notify the user by voice.

In such a configuration, main controller 5
6 is the lighting control device 53 corresponding to the address number “01”
-1 is transmitted at 8:00 on Feb. 14, 1998 at 8:00 on the same day, and a control signal for turning off the luminaires 31a, 31b, 31c is transmitted at 8:00 on the same day. : 30, it is 8:00.
The instantaneous power consumption P at the time of is P = 35W × 3
(Table), it becomes 105W. Also, from 8:00 to 8:
When the power consumption E up to 30 is obtained, E = 105 W
× 0.5h = 52.5Wh. The power consumption P and the power consumption E thus obtained are displayed on the display unit 56g.

As described above, even in a system for turning on and off the lighting equipment, what is the instantaneous power consumption,
The amount of power consumption from a certain time to a certain time can be surely known from the display.

A counter counts the number of times of lighting for each address. For example, the address number "01", that is, the lighting fixtures 51a, 51 controlled by the lighting control device 53-1 is used.
When the number of lightings of 1b and 51c reaches 10,000 times, the calculating unit 56f determines that the lamps of the lighting fixtures 51a, 51b and 51c have reached the end of their life, and the display by the display unit 56g and the sound generating unit 56h. Notify by voice.
Therefore, the administrator can surely know that the lamps of the lighting fixtures 51a, 51b, 51c have reached the end of their life by both display and sound.

In this embodiment, the lamp life is determined by replacing the lamp life with the number of times of lighting of the lamp. However, the present invention is not limited to this, and the lamp life can be replaced by the total lighting time of the lamp. Alternatively, the lamp life may be determined by measuring the total lamp lighting time. Alternatively, the lamp life may be determined by measuring both the number of times the lamp is turned on and the total time of lamp lighting.

[0047]

According to the first aspect of the present invention, it is possible to reliably grasp the power consumption of the load to be controlled. Further, according to the second and third aspects of the present invention, it is possible to reliably know the power consumption of the load to be controlled.

[Brief description of the drawings]

FIG. 1 is a block diagram showing a first embodiment of the present invention.

FIG. 2 is a block diagram showing a configuration of a main control device in the embodiment.

FIG. 3 is a block diagram showing a configuration of a lighting control device according to the embodiment.

FIG. 4 is a diagram showing a configuration example of a table formed in a storage unit of the main control device according to the embodiment.

FIG. 5 is a view showing an example of data storage in a storage area formed in a storage unit of the main control device according to the embodiment.

FIG. 6 is a diagram showing another example of the configuration of the table formed in the storage unit of the main control device according to the embodiment.

FIG. 7 is a diagram showing another example of the configuration of the table formed in the storage unit of the main control device according to the embodiment.

8 is a graph showing the relationship between the power consumption P and the function fn (xn) in FIG.

FIG. 9 is a block diagram showing a second embodiment of the present invention.

FIG. 10 is a block diagram showing a third embodiment of the present invention.

FIG. 11 is a block diagram showing a configuration of a lighting control device in the embodiment.

FIG. 12 is a block diagram showing a configuration of a main control device according to the embodiment.

FIG. 13 is a diagram showing a configuration example of a table formed in a storage unit of the main control device according to the embodiment.

FIG. 14 is a diagram showing an example of data storage in a storage area formed in a storage unit of the main control device according to the embodiment.

FIG. 15 is a block diagram showing a conventional example.

FIG. 16 is a diagram showing a format of a control signal transmitted by a main controller in the conventional example.

FIG. 17 is a block diagram showing a configuration of a main control device in the conventional example.

FIG. 18 is a block diagram showing a configuration of a lighting control device in the conventional example.

[Explanation of symbols]

11a to 11c, 12a, 12b, 13a, 13b ... Fluorescent lighting equipment 15, 17, 19 ... Power supply 20-1 to 20-n ... Lighting control device 22 ... Main control device 22d ... Storage unit 22f ... Calculation unit

Claims (3)

[Claims] 1. A load control device comprising: a main control device; and a load control device for controlling a load under various conditions based on a control signal received from the main control device via a communication line, wherein the main control device includes the load control device. A storage unit that stores in advance various condition data when driving control of the load and stores condition data when the load control device actually drives and controls the load based on a control signal.
A load control system comprising: a calculation unit configured to calculate power consumption of the load from various condition data stored in the storage unit in advance and condition data stored during load driving. 2. A main control device and a load control device for driving and controlling a load under various conditions based on a control signal received from the main control device via a communication line, wherein the main control device measures time. A clock circuit, and various condition data when the load control device drives and controls the load are stored in advance, and condition data and the condition when the load control device actually controls the load based on a control signal. A storage unit that receives and stores the time data at which driving is started under the data from the clock circuit,
A load control system comprising: a calculation unit configured to calculate the power consumption of the load from various condition data stored in advance in the storage unit, and condition data and time data stored at the time of driving the load. 3. A main control device and a load control device for driving and controlling a load under various conditions based on a control signal received from the main control device via a communication line, wherein the main control device measures time. A clock circuit, and various condition data when the load control device drives and controls the load are stored in advance, and condition data and the condition when the load control device actually controls the load based on a control signal. A storage unit that receives and stores the time data at which driving is started under the data from the clock circuit,
A calculation unit for calculating the power consumption of the load from various condition data stored in advance in the storage unit, condition data and time data stored during driving of the load, and time measured by the clock circuit. A load control system characterized by the following.