JPS59201393A - Controller of electric device - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed Description of the Invention] [Technical Field of the Invention] The present invention relates to a control device for electrical appliances that controls a plurality of household appliances such as lighting lights and air conditioners at one location. , especially when the current used exceeds the maximum setting
The present invention relates to a control device for electrical appliances that sequentially stops the electrical appliances with the lowest power and suppresses the current usage to a total maximum set value or less.

[Technical background of the invention and its problems]

BACKGROUND ART Conventionally, control devices that centrally control electrical appliances in the home are well known. For example, the load f# of air conditioners etc.
For JJ's large electrical appliances, direct current is required for operation.
Is there a system that suppresses the total setting amount that occurs when the number exceeds 11? Some have a built-in wholesaler.

However, with conventional control devices, the DC suppression function is only activated by the built-in control device for each electrical appliance, and the total usage current (total DC) and total contracted current (total DC current) are Since it does not have a function to suppress the current to below the maximum set current, if the total current used exceeds the contracted current, the power supply current will be cut off by a circuit breaker, etc., making it impossible to avoid a disadvantageous situation.

[Purpose of the invention]

The present invention has been made in view of the above-mentioned drawbacks of the prior art, and its entire purpose is to provide a control unit f for an electrical appliance that can suppress the total current consumption for each household to below the maximum setting.

[Summary of the invention]

In order to achieve this object, the present invention includes a current detector that detects the entire power supply current, a maximum current detection circuit that detects that the current exceeds the maximum set current value, and A conventional control device is provided with a control circuit that stops electrical appliances in descending order of importance based on the detection signal so that the detection signal becomes zero.

[Embodiments of the invention]

Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

FIG. 1 shows the operating section of the control device according to this embodiment. The control unit 1 has lighting lights and air conditioners (hereinafter referred to as "air conditioners") installed in each room.
l! are arranged in a matrix in order of importance. For example, lighting control of lighting lights installed in the room 1 is performed by a switch SW.

The air conditioner installed in room 6 was operated using the operating system ID SW. The reason why a large number of switches EIW1 to 5W1t' are arranged in the control unit 1 is to enable centralized control of the lighting and air conditioners f-'fd in the household.

FIG. 2 shows a circuit diagram of a control device operated by the switches SW□ to SW□. In the figure, toI″
iAc 100 v etc.'lEWimfil thea!
l), illumination lights 20, - 20. installed in each room in the home from this power line IO. and air conditioner20. ~201. Power is supplied to. Here, the illumination lights 201 to 206 are turned off by the normally open contacts 211 to 216 of the front lights switches SW to SW6 connected in series thereto, and the air conditioner 20
゜～20m! is the switch sw, ~sw,! Contact point 2]7
a~2'+t a s 21+z b and air conditioner 20.
A driving relay 22 connected in series to ~20□. ~221
．． Normally open contact 22. A to 22 + ta will be cut off.

The current value flowing through the power line IO is measured by a current detector 23 such as a current transformer.
is detected and converted into heavy pressure. Then, the rectifier 24 converts it into DC 1 voltage, and after smoothing it with the capacitor 25 and resistor 26, it is applied to the (g) input terminals of the comparator (maximum current detection circuit 27). A reference voltage is applied through a voltage dividing resistor blade 29. The comparator 27 compares both input voltages, and the (g) input voltages are (f) input voltages (base voltages)'
When it exceeds ft, a high level (H level) signal is output from the output terminal and applied to the transferer 300 through the resistor 29, turning the transferer 30 on.

Further, the control power supply line 40 includes an AND gate 41. ~41
, , are connected in parallel. Each AND gate 41
, ~41□ input terminals are connected to (T) of the control power supply line 40.
The side is the normally open contact 21. of the switches SW, ~SW, . a
˜2Lsta k, and the collector side of the transistor 30 is also connected thereto. kND gate 41 here? ~41,1 and the collector side of the transferer 30 are the switches SW, ~SW1. normally open contact 21,
b to 21□be. Furthermore, the control type, i
The relay 22. ~22□ coil and transferer 42. .about.4512 series circuits are connected in parallel, respectively, and the transistors 42. ~42m! The total number is the previous H6A ND gate 41. ~41□ is connected via a resistor. As described later, if the total current value in the home is less than the contracted DC value, the transistor 3
0 is the off state, and in this state, for example, switch S
WI! When k is turned on, this switch SW, ! Normally open contact 211! a is in the on state, and the normally closed contact 21 and *o are in the off state. Then, the two inputs of the ND gates 411 and 411 go to H level, so the outputs of the AND gates 41 and 41 go to H level, turning on the transferer 42, t, and the coil of the relay 22□ is energized to eliminate this constant state. Open contact 22
□a turns on and air conditioner 20m becomes operational. When switch 8Wttk is turned off in this state, this normally open contact 211! a is turned off and the AND gate 411,
01 Since the human power is at L level, the corresponding A N D gate 41
The output of □ becomes L level, the transifter 424 is turned off, the relay 22□ is demagnetized, and its normally open contact 22m! a
turned off and the air conditioner turned off at 20. t is in a stopped state. In addition,
Each relay 22. A diode 43 connected in parallel to the ~22□ coil. ~43□ is a diode for surge absorption.

ft? configured as above? The operation of the control device will be explained.

When the total current value in the home exceeds the contract current (DC), the secondary voltage of the current detector 230 exceeds the base voltage of the comparator 27, the output of the comparator 27 reaches H level, and the transistor 30 turns on. .

Here, switch 5W12 is turned on, and this normally open contact 2
]l! a is turned on and the air conditioner 201 in room 6 is turned on.
．． is driving, AND gate 4] I2's two-man power becomes H and L level, and the corresponding A) JD game) 41. ,,
The output of transistor 42I! becomes L level and the output of transistor 42I! is turned off, the normally open contacts of the relays 22, 2 are turned off, and the air conditioners 20, 2 are stopped.

Further, when switch SW, , is off and air conditioner switch SW, , for room 5 is on, contact 218 of switch SW, , is turned on. a is in the off state, contact 21 tt b is in the on state, and the contact 2111a of switch SW, .
is in the off state and the contacts 21 u b are in the off state, so the two manual inputs of the AND gates 41 , , are at the L level, and the output of the AND gate 41 tt is at the L level.
Transistor 42. t is turned off, relay 22□ is turned off, and air conditioner 201.t in room 6 is turned off. stops. At this time, since the switches SW, , are on, the single power of the AND gate 41.1 reaches the H level, and the total current value is the contract current (
When the voltage is below ik, the transistor 30 is turned off and becomes H.
The level signal is switch SWl! Normally closed contact 21 tt
Since the output of the AND gate 41,1 jumps to H level and the transistor 42,1 turns on, the relay coil 22.1 is not energized and this contact 22 .1. turns on and air conditioner 201
．． is driven. However, the total DC is the contracted DC full
When the voltage exceeds l-, the transistor 30 turns on, and the collector side of the transistor 30 becomes L level, and the AND
Output of gate 4111 reaches L level, air conditioner 20
．． 1 stops.

Furthermore, when the switches s w, , s w, , are both off, the nuitch day WIIISW1. Contact 2
'1! When b * 21 o b is in the on state, the H level signal on the collector side of the transistor 30 is not applied to the input side of the AND gate 41 through this contact 21 xt b * 21 ul), so the switch SW. If all of the contacts are turned on (that is, contact 21..a is turned on), the two outputs of (AND game) 41 to become H level, the output becomes H level, and transistor 42m1
．． turns on and relay 2211. The air conditioner in room 4 is driven by this. If the total current exceeds the contracted current value, the air conditioner in the room 4 is stopped in substantially the same manner as described above. In this way, when the total current exceeds the contract current value,
Since the air conditioners with lower priority are stopped in the ++mth order and the total current is suppressed to below the contract current, it is possible to eliminate the inconvenience of the power supply current being cut off by a breaker or the like provided on the power line 1o side.

Hiko, in the above embodiment, the control device was configured using an AND gate, a transistor, etc. as shown in FIG. 2, but instead of these, the circuit could be configured using a microcomputer CPUf.

In addition, in the above embodiment, the control of lighting lights and air conditioners is described as electrical appliances in the home, but it goes without saying that the control also applies to electrical appliances outside the home.

〔Effect of the invention〕

As described above, the present invention includes a conventional control device that includes a current detector, a maximum current detection circuit, and a control device that adjusts the detection signal to zero based on the detection signal of the maximum current detection circuit. Since we have installed a circuit that shuts down the total MWK in descending order, when the total current usage exceeds the maximum current setting, many electrical appliances will be shut down in order of decreasing importance, thereby reducing the total usage current to the maximum current setting. suppressed below the value. Therefore, even if the general service current exceeds the set value of 6 Mk, it is quickly suppressed to below the set value level, so that the inconvenience of power supply current being interrupted by a circuit breaker or the like provided on the power supply side can be easily and precisely eliminated.

[Brief explanation of drawings]

FIG. 1 is a diagram showing a control section of a control device according to an embodiment of the present invention, and FIG. 2 is a configuration diagram of a control circuit connected to the control section of FIG. 1. 1...control unit, 20. ~20. River lighting, 20. ~2
0. . ...Air conditioner, 211-21. ...Nuittsuchi sw, -s
w,,,2] ya ~21 +++a ”'Nuittsu SW, ~SW1. normally open contact, 21.b~2],,1
)... Nuitch SW, normally closed contact of ~SW□, 23...
- Current detection value, 27... Comparator, 3o. 41, ~410. ...Transistor, 41. ~411
! ...AND gate. Applicant's agent Kiyoshi Inomata (1)

Claims (1)

[Claims] (1) Turn on multiple electrical appliances such as lighting lights and air conditioners,
A current detector for detecting an illumination current in a control device for an electric appliance remotely controlled by a plurality of switches provided in the control section, and a current detector for detecting that the detected blood flow exceeds the maximum current limit. Based on the maximum current detection circuit and the priority order of the electrical appliances set in advance in the order of importance, the electrical appliance is 1. A control device for electrical appliances, comprising a control circuit that sequentially stops appliances.