JP4974791B2 - Load control system - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To surely acquire the degree of total power consumption in a plurality of loads of control objects on a main control device side. <P>SOLUTION: The system comprises the main control device 22 and lighting controllers 20-1 and 20-2 which receive a control signal containing an address signal from the main control device through a signal line 21 and perform dimming control of fluorescent lamp luminaires 11a, 11b, 12a, and 12b in various conditions based thereon. The main control device includes a storage part which preliminarily stores various condition data for dimming control of luminaires by each lighting controller, or number of luminaires, effective value of input voltage, dimming control quantity, and effective value and power factor of input current for each dimming control quantity, and also stores condition data in actual dimming control of luminaires based on the control signal by each lighting controller, or a dimming control quantity; and an arithmetic part which computes a total power consumption of a plurality of luminaires controlled by the lighting controllers from the various condition data and the luminaire driving-based condition data in the storage part. <P>COPYRIGHT: (C)2008,JPO&amp;INPIT

Description

  The present invention relates to a load control system that drives and controls a fluorescent lamp illuminator or an air conditioner as a load.

  In recent years, energy conservation has been promoted for various devices. 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 is increasing. There is a tendency to increase the amount of electric power. For this reason, for the manager of each facility, a measure for reducing the power consumption by the electric equipment has become important.

  For example, a system having a configuration shown in FIG. 15 is known as a system that uses a fluorescent lamp illuminator as a load and performs dimming control on the illuminator to reduce power consumption. This is because the lighting fixtures 1a, 1b, and 1c with dimming function are grouped into one group, and the power terminals of the lighting fixtures 1a, 1b, and 1c are connected to the commercial power source 3 via the power switches 2a, 2b, and 2c, respectively. The lighting fixtures 1d, 1b, and 1c with dimming function are grouped together, and the power terminals of the lighting fixtures 1d, 1e, and 1f are connected to the commercial power source 3 via the power switches 2d, 2e, and 2f, respectively. ing.

  The dimming terminals of the lighting fixtures 1a, 1b, and 1c are connected to the lighting control device 4a that controls the lighting of the lighting fixtures, and the dimming terminals of the lighting fixtures 1d, 1e, and 1f are connected to the lighting control device 4a. Each lighting fixture is connected to a lighting control device 4b for dimming control. Each of the lighting control devices 4a and 4b is connected to the main control device 6 via the communication line 5, and receives a control signal from the main control device 6 to control the lighting of each lighting fixture.

  As shown in FIG. 16, the format of the control signal transmitted from the main control device 6 to each of the lighting control devices 4a and 4b includes a synchronization signal, an address signal for designating the address of the lighting control devices 4a and 4b that are transmission destinations, and lighting. The control device 4a, 4b includes a control signal for designating control contents such as a light control amount when each lighting apparatus is controlled.

  As shown in FIG. 17, the main controller 6 includes an input unit 6a, a signal processing unit 6b, and a signal transmission unit 6c. When data for control from the operation unit is input to the input unit 6a, the signal processing unit 6b. Is converted into a signal suitable for the control content, and the signal transmission unit 6c transmits the converted signal to each of the lighting control devices 4a and 4b via the signal line 5. The data input to the input unit 6a can be input via the network 7 as well as directly from the operation unit.

  As shown in FIG. 18, each of the lighting control devices 4a and 4b includes a receiving unit 8a, a data processing unit 8b, an address setting unit 8c, and a control unit 8d, and is transmitted from the main control device 6 through the communication line 5. The control unit receives the control signal and passes it to the data processing unit 8b. A unique address is set in the address setting unit 8c, and the data processing unit 8b determines whether the address signal included in the received control signal matches the self address set in the address setting unit 8c. The received control signal is passed to the control unit 8d only when they match. Based on the control signal, the control unit 8d sends a lighting control output to the lighting fixture and performs dimming control.

  In such a system, for example, when the lighting fixtures 1a, 1b, and 1c are arranged on the window-side ceiling of the room, and the lighting fixtures 1d, 1e, and 1f are arranged on the wall-side ceiling of the room, daylight during daylight When the light enters from the window, the main control device 6 transmits a control signal for dimming control of the respective lighting fixtures 1a, 1b, 1c to 60% brightness to the lighting control device 4a. A control signal for dimming control of each of the lighting fixtures 1d, 1e, and 1f with a brightness of 90% is transmitted to 4b.

  Then, at night, the main control device 6 transmits a control signal for 100% total light to each of the lighting fixtures 1a to 1f to each of the lighting control devices 4a and 4b.

  By performing such control, the illuminance in the room can always be controlled to a certain brightness, and energy saving can be achieved.

  However, in such a system, each lighting fixture can be dimmed and controlled according to the situation, but how much power is consumed by each lighting fixture, for example, how much power consumption per day is However, there is a problem that information necessary for management by the manager cannot be obtained at all, such as how much energy saving can be achieved.

  Therefore, the invention according to claim 1 provides a load control system capable of reliably grasping the power consumption of the load to be controlled.

  The inventions according to claims 2 and 3 provide a load control system that can surely know how much power is consumed by the controlled load.

The invention according to claim 1 comprises a main control device and a load control device that drives and controls a load under various conditions based on a control signal including an address signal received from the main control device via a communication line. The control device stores in advance control amount when the load control device drives and controls the load, data related to power consumption corresponding to the control amount, and transmits a control signal including an address signal. from a storage unit which stores data representing the control amount, the control amount which the storage unit is stored in advance, and data representing the control amount stored in the can and to transmit data and control signals related to the power consumption corresponding to the control amount A calculation unit for calculating the power consumption of the load.

The invention according to claim 2 comprises a main control device and a load control device that drives and controls a load under various conditions based on a control signal including an address signal received from the main control device via a communication line. The control device stores in advance a clock circuit for measuring time, a control amount when the load control device drives and controls the load, data relating to power consumption corresponding to the control amount, and a control signal including an address signal. A storage unit that receives and stores data representing a control amount in a control signal and time data that starts driving based on the data representing the control amount when transmitting, and the storage unit stores in advance control amount are, from the data and the time data representing a control amount stored when transmitting data and control signals related to the power consumption corresponding to the control amount, the drive start and The power consumption of the load between the time data and the time data has been completed the drive is obtained and a calculator for calculating.

According to a third aspect of the present invention, there is provided a main control device and a load control device that drives and controls a load under various conditions based on a control signal including an address signal received from the main control device via a communication line. The control device stores in advance a clock circuit for measuring time, a control amount when the load control device drives and controls the load, data relating to power consumption corresponding to the control amount, and a control signal including an address signal. A storage unit that receives and stores data representing the control amount in the control signal and time data started to drive based on the data representing the control amount when transmitting, and this storage unit stores in advance control amount, and the data and time data representing the stored control quantity when transmitting data and control signals related to the power consumption corresponding to the control amount, said clock circuit is timed Time from the that, in which the clock circuit from the time data driving start and a calculator for calculating the power consumption of the load in between times that counted.

  According to the first aspect of the present invention, the main controller can surely grasp the total power consumption of the plurality of loads controlled based on the control signal including the address signal.

  According to the second and third aspects of the present invention, the main control device determines how much the total power consumption is in a plurality of loads controlled based on a clock signal for measuring time and a control signal including an address signal. You can know by side.

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 applied to control the lighting fixture.

  In FIG. 1, 11a, 11b, 11c are the first group of fluorescent lamp lighting fixtures with dimming function, 12a, 12b are the second group of fluorescent lamp lighting fixtures with the dimming function, 13a, 13b,. It is a fluorescent lamp luminaire with dimming function.

  The power terminals of the fluorescent lamp illuminators 11a, 11b, and 11c are connected to a 200V power source 15 through power switches 14a, 14b, and 14c, respectively. The power terminals of the fluorescent lamp illuminators 12a and 12b are connected to a 100V power source 17 through power switches 16a and 16b, respectively. Are connected to a 100V power source 19 through power switches 18a, 18b,..., Respectively.

  Further, the dimming terminals of the respective fluorescent lamp lighting fixtures 11a, 11b, and 11c are connected to the lighting control device 20-1, and the dimming terminals of the respective fluorescent lamp lighting fixtures 12a and 12b are connected to the lighting control device 20-2. , And the dimming terminals of the fluorescent lamp illuminators 13a, 13b,... Are connected to the illumination control device 20-n. Each of the lighting control devices 20-1, 20-2, 20-n is connected to the main control device 22 via a communication line 21.

  As shown in FIG. 2, the main controller 22 includes an input unit 22a, a signal processing unit 22b, a signal transmission unit 22c, a storage unit 22d, a clock circuit 22e, a calculation unit 22f, and a power display unit 22g. In 22a, input data from the operation unit and input data from the network 23 are acquired.

  The input data taken in by the input unit 22a is passed to the signal processing unit 22b, and the signal processing unit 22b converts the input data into control signals suitable for the control contents. 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 to each of the lighting control devices 20-1, 20-2, 20- via the communication line 21. Send to n.

As shown in FIG. 4, the storage unit 22d stores address numbers corresponding to the lighting control devices 20-1, 20-2, and 20-n, and lighting control devices 20-1, 20-2, and 20-n. The number of fluorescent lamp luminaires connected to each other, the effective value of the input voltage, various dimming control amounts, and the input current effective value and power factor data for each dimming control amount are preset as condition data. A table 24 is provided. In addition, 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 and at that time Is provided with a storage area 25 for receiving and storing the time data from the clock circuit 22e. The storage unit 22d is a hard disk, ROM, PROM, RAM when the main control device 22 is a computer such as a personal computer.
It is comprised by storage media, such as.

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

  As shown in FIG. 3, each of the lighting control devices 20-1, 20-2, and 20-n includes a receiving unit 26a, a data processing unit 26b, an address setting unit 26c, and a control unit 26d. The receiving unit 26a receives a control signal transmitted from the communication line 21 via the communication line 21, and passes it to the data processing unit 26b. The address setting unit 26c is set with its own unique address, and the data processing unit 26b matches the address signal included in the received control signal with the self address set in the address setting unit 26c. The received control signal is passed to the control unit 26d only when they match. The control unit 26d controls the dimming by sending an illumination control output to the luminaire based on the control signal.

  In such a configuration, the main control device 22 controls the lighting control devices 20-1 corresponding to the address number “01” to turn on the lighting fixtures 11a, 11b, and 11c with the dimming control amount being 100% all light. A signal is transmitted at 8:00 on February 14, 1998, and further, a control signal for lighting the lighting fixtures 11a, 11b, and 11c at a light control amount of 25% is transmitted at 8:30 on the same day. Since the effective value of the input power is 200 V, the effective value of the input current is 487 mA, and the power factor is 98.9%, the instantaneous power consumption P at the time of 8:00 is P = 200 V × 487 mA × 98.9% × From 3 (unit), it becomes approximately 289 W, and this is displayed on the power display unit 22 g.

  Further, the instantaneous power consumption P at the time of 8:30 is approximately 104 W from P = 200 V × 185 mA × 93.6% × 3 (units), and this is displayed on the power display unit 22 g.

  For example, when the time of the clock circuit 22e is 8:36, the power consumption amount E from 8:00 at the time of 8:36 is calculated as follows: 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, it is mainly determined to what extent the instantaneous power consumption of the lighting fixtures 11a, 11b, and 11c driven and controlled by the lighting control device 20-1 for each dimming control amount. The power display unit 22g of the control device 22 can be surely known. In addition, it is possible to reliably know how much power is consumed by the lighting fixtures 11a, 11b, and 11c controlled by the lighting control device 20-1 from a certain time to a certain time by the power display unit 22g of the main control device 22. it can. Therefore, the administrator can easily execute measures for energy saving from the power consumption and the power consumption.

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

  For example, as shown in FIG. 6, in correspondence with the address number, a table 24a in which the number of fluorescent lamp luminaires, various dimming control amounts, and power data calculated in advance for each of the various dimming control amounts are set as condition data. It may be.

  Moreover, as shown in FIG. 7, the table 24b which set the function which calculates | requires the number of fluorescent lamp lighting fixtures and the power consumption P corresponding to an address number may be sufficient.

  As a function, for example, the power consumption P of the lighting fixtures 13a, 13b,... Controlled by the lighting control device 20-n at address n is the function fn (xn) of the control amount xn of the lighting control device 20-n at address n. Thus, the calculation unit 22f calculates the power consumption P = function fn (xn) from the control amount xn and the function fn (xn) at the time of data transmission stored in the table 24b of the storage unit 22d, and instantaneous consumption Electric power can be calculated.

  FIG. 8 shows the relationship of P = fn (xn) as a graph. If this function is integrated over time, the power consumption can be obtained.

  If the power consumption and the power consumption amount are calculated in this way, the data capacity stored in the table can be sufficiently reduced as compared with the case where the condition data for each dimming control amount is stored.

Of course, the number of lighting fixtures connected to the lighting control devices 20-1, 20-2, 20-n is not limited to that of this embodiment.
(Second Embodiment)

  As shown in FIG. 9, as a load, in addition to a fluorescent lamp luminaire 31 a, 31 b, 31 c with dimming function, an air conditioner 32, another electrical device 33, etc. are connected, and these are connected by a main controller 34. The power terminals of the respective lighting fixtures 31a, 31b, 31c are connected to a power source 36 via a power switch 35, and the power terminals of the air conditioner 32 are connected to a power source 38 via a power switch 37. The electrical device 33 is connected to a power source 40 via a power switch 39.

  And the light control terminal of each said lighting fixture 31a, 31b, 31c is connected to the load control apparatus 41, the control terminal of the said air conditioner 32 is connected to the load control apparatus 42, and the control terminal of the said electric equipment 33 is loaded. It is connected to the 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 the same configuration as the above-described lighting control device 20-1, and controls the lighting fixtures 31a, 31b, and 31c in accordance with a control signal from the main control device 34. The load control device 42 drives and controls the air conditioner 32 by a control signal from the main control device 34, and the load control device 43 drives and controls the electric device 33 by a control signal from the main control device 34. Addresses 01, 02, and 03 are set in the load control devices 41, 42, and 43, respectively. The main controller 34 has the same configuration as the main controller 22 described above.

As described above, the air conditioner 32 is stored in the storage unit of the main controller 34 in the same manner as in the above-described embodiment even if the air conditioner 32 and other electric devices 33 are connected in addition to the lighting fixtures 31a, 31b, and 31c. Further, by setting the effective value of the input voltage to the other electric device 33, the effective value of the input current, and the power factor, it is possible to grasp the instantaneous power consumption and the power consumption for a certain time. Therefore, the same effects as those of the first embodiment described above can be obtained.
(Third embodiment)

  In this embodiment, only a lighting fixture is used as a load and applied to control of the lighting fixture.

  In FIG. 10, 51a, 51b, and 51c are the 1st group fluorescent lamp lighting fixtures, 52a and 52b are the 2nd group fluorescent lamp lighting fixtures, and these are the lighting fixtures which do not have a light control function.

  The power terminals of the fluorescent lamp luminaires 51a, 51b, 51c are connected to the illumination power output line 54-1 from the illumination control device 53-1, and the power terminals of the fluorescent lamp luminaires 52a, 52b are connected to the illumination control device. It is connected to the illumination power output line 54-1 from 53-2. Each of the lighting control devices 53-1 and 53-2 is connected to a main control device 56 via a communication line 55 and is connected to a commercial power source 58 via a power supply line 57. The main controller 56 has the same configuration as the main controller 22 described above.

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

  When the control unit 59d receives the control signal, based on the control command in the control signal, when the control command is lit, the control unit 59d turns on the built-in relay circuit and sends the power from the power line 57 as the illumination power output. When the control command is not lit, the relay circuit is turned off.

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

  As shown in FIG. 13, the storage unit 56d includes an address number corresponding to each of the lighting control devices 53-1, 53-2, and a fluorescent lamp lighting device connected to each of the lighting control devices 53-1, 53-2. Is provided with a table 61 in which each data of the number of lights, control information of lighting and extinguishing, and power consumption at lighting is set in advance as condition data, and address numbers corresponding to the respective lighting control devices 53-1 and 53-2 and lighting on / off. A table 62 is provided in which the control information and the lamp life of the fluorescent lamp mounted on the luminaire are preset as the lighting limit number.

  Further, 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 unit 56c of the main control device 56 are stored as condition data, and the time data at that time is displayed as a clock. A storage area 63 for receiving and storing from the circuit 56e is provided. Note that the storage unit 56d is configured by a storage medium such as a hard disk, ROM, PROM, or RAM when the main controller 56 is formed of a computer such as a personal computer.

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

  The calculation unit 56f is provided with a counter inside, and the counter counts the number of times of lighting for each address. 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. When the number of times the lamp is lit by the counter matches the number of lamp life lighting limits set in the table 62, it is determined that the lamp life has been reached, and this is displayed on the display unit 56g and the sound generation unit 56h is driven. To inform by voice.

  In such a configuration, the main control device 56 sends a control signal for turning on the lighting fixtures 31a, 31b, 31c to the lighting control device 53-1 corresponding to the address number “01”. If the control signal for turning off the lighting fixtures 31a, 31b, and 31c is transmitted at 8:30 on the same day, the instantaneous power consumption P at the time of 8:00 is P = 35W × 3 ( ), It will be 105W. Further, when a power consumption amount E between 8:00 and 8:30 is obtained, E = 105 W × 0.5 h = 52.5 Wh. The power consumption P and the power consumption E thus obtained are displayed on the display unit 56g.

  In this way, even in a system that turns on / off a lighting fixture, it is possible to reliably know how much instantaneous power is consumed and how much power is consumed from a certain time to a certain time.

  The counter counts the number of times of lighting for each address. For example, the address number “01”, that is, the lighting times of the lighting fixtures 51a, 51b, 51c controlled by the lighting control device 53-1, reaches 10,000 times. Then, the calculation unit 56f determines that the lamps of the lighting fixtures 51a, 51b, and 51c have reached the end of life, and notifies the fact by a display by the display unit 56g and a sound by the sound generation unit 56h. Accordingly, the administrator can surely know that the lamps of the lighting fixtures 51a, 51b, 51c have reached the end of their life both by display and voice.

  In this embodiment, the lamp life is replaced with the number of times the lamp has been turned on, but the present invention is not necessarily limited to this, and the lamp life can be replaced with the cumulative lighting time of the lamp. The lamp life may be determined by measuring the accumulated time. Alternatively, the lamp life may be determined by measuring both the number of times the lamp is lit and the total lamp lighting time.

The block diagram which shows the 1st Embodiment of this invention. The block diagram which shows the structure of the main controller in the same embodiment. The block diagram which shows the structure of the illumination control apparatus in the embodiment. The figure which shows the structural example of the table formed in the memory | storage part of the main-control apparatus in the embodiment. The figure which shows the data storage example of the storage area formed in the memory | storage part of the main controller in the same embodiment. The figure which shows the other structural example of the table formed in the memory | storage part of the main controller in the same embodiment. The figure which shows the other structural example of the table formed in the memory | storage part of the main controller in the same embodiment. The graph which shows the relationship between the power consumption P in FIG. 7, and the function fn (xn). The block diagram which shows the 2nd Embodiment of this invention. The block diagram which shows the 3rd Embodiment of this invention. The block diagram which shows the structure of the illumination control apparatus in the embodiment. The block diagram which shows the structure of the main controller in the same embodiment. The figure which shows the structural example of the table formed in the memory | storage part of the main-control apparatus in the embodiment. The figure which shows the data storage example of the storage area formed in the memory | storage part of the main controller in the same embodiment. The block diagram which shows a prior art example. The figure which shows the format of the control signal which the main controller in the prior art example transmits. The block diagram which shows the structure of the main controller in the prior art example. The block diagram which shows the structure of the illumination control apparatus in the prior art example.

Explanation of symbols

11a to 11c, 12a, 12b, 13a, 13b ... fluorescent lamp 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)

It consists of a main control device and a load control device that drives and controls the load under various conditions based on a control signal including an address signal received from the main control device via a communication line.
The main control device stores a control amount when the load control device drives and controls the load, data related to power consumption corresponding to the control amount, and transmits a control signal including an address signal. data representing a storage unit for storing the data representing the control amount of the internal control amount which the storage unit is stored in advance, a control amount stored in the can and to transmit data and control signals related to the power consumption corresponding to the control amount And a calculation unit for calculating the power consumption of the load. It consists of a main control device and a load control device that drives and controls the load under various conditions based on a control signal including an address signal received from the main control device via a communication line.
The main control device stores in advance a clock circuit for measuring time, a control amount when the load control device drives and controls the load, and data related to power consumption corresponding to the control amount and a control including an address signal A storage unit that receives and stores data representing a control amount in a control signal and time data started driving based on the data representing the control amount when transmitting a signal, and the storage unit stores in advance The time data at which the driving is started and the time data at which the driving is finished, from the data related to the controlled amount, the power consumption corresponding to the controlled amount, the data representing the controlled amount stored when transmitting the control signal, and the time data. A load control system comprising: a calculation unit that calculates a power consumption amount of the load between the two . It consists of a main control device and a load control device that drives and controls the load under various conditions based on a control signal including an address signal received from the main control device via a communication line.
The main control device stores in advance a clock circuit for measuring time, a control amount when the load control device drives and controls the load, and data related to power consumption corresponding to the control amount and a control including an address signal A storage unit that receives and stores data representing the control amount in the control signal and time data started driving based on the data representing the control amount when transmitting the signal, and this storage unit stores in advance Control time, data related to power consumption corresponding to the control amount, data and time data representing the control amount stored when the control signal is transmitted, and time data measured by the clock circuit, from time data when driving is started load control system, wherein the clock circuit is an arithmetic unit for calculating the power consumption of the load in between times that timed

Images