JP2001004665A - Household electric appliance with power consumption measuring and displaying function - Google Patents

Abstract

PROBLEM TO BE SOLVED: To arbitrarily grasp the power consumption of respective electric appliances and the guide of power rates meeting them while restraining an overall cost increase by use of simple and minimum constituent members. SOLUTION: This household electric appliance A is provided with a power consumption measuring and displaying circuit 10 which involves a current transformer 6 measuring input AC current into the power supply part 3 of the electric appliance A, a measuring part 7 calculating accumulated power consumption based on the measured AC current, a controlling part 8 calculating accumulated power rate by means of multiplying accumulated power consumption calculated by the measuring part 7 by a unit rate and clocking accumulated current- carrying time, an LCD displaying part 1 cyclically-displaying the figures of the accumulated power consumption calculated and clocked, the accumulated power rate, and the accumulated current-carrying time in a predetermined order and at predetermined intervals, and a switch part 9 capable of conducting the on/off and reset operation thereof.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to individual electric power consumption including standby electric power of various household appliances owned by ordinary households such as a television, a video, a refrigerator, and a vacuum cleaner, and the electric power consumption. The present invention relates to a household electric appliance with a power consumption measurement display function suitable for knowing a guide such as a corresponding power rate.

[0002]

2. Description of the Related Art Televisions owned by modern households,
As a means of knowing the power consumption of multiple appliances such as video, refrigerators, and vacuum cleaners, conventionally, the total power consumption is calculated by adding up the power consumption of these multiple appliances and integrating the total power consumption Read the value displayed on the large integrated watt-hour meter installed for each electric power consumer (home), or read the contents described in the meter reading notice by meter readers who regularly patrol. Or see
There is no other than means of either.

[0003]

However, by simply reading the numerical value displayed on a large-scale integrated watt-hour meter installed in each household as in the past, or simply looking at the contents of a meter reading notice, You can only know the total amount of electric power for multiple appliances and the total electricity rate corresponding to the total amount of electric power. However, there is a problem in that it is not possible to know even the standard of the amount of electric power or the electric charge required by multiplying the amount of electric power by the unit price.

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and uses a simple and minimum number of components to suppress an increase in the cost of an electric appliance itself and to reduce the power consumption of each electric appliance held by a general household. It is an object of the present invention to provide a household electric appliance with a power consumption measurement display function that can arbitrarily know a target of an electricity bill corresponding to the electricity consumption as needed.

[0005]

In order to achieve the above object, a household appliance having a power consumption measurement and display function according to the present invention is provided in a household appliance having at least a power supply unit and a control unit. A current transformer that measures the input AC current to the power supply unit, a measuring unit that calculates the integrated power amount based on the AC current measured by the current transformer, and an integrated power amount that is calculated by the measuring unit. A control unit that calculates the accumulated electricity rate by multiplying the unit price and measures the accumulated electricity time, and at least the accumulated electricity amount, accumulated electricity rate, and accumulated electricity time calculated by the measuring unit and the control unit. It is characterized by incorporating a display unit for numerically displaying a plurality of items including a charge, and a power amount measurement display unit including a switch unit capable of turning on / off and resetting operations of the measuring unit and the control unit. When Is shall.

According to the present invention having the above-described configuration, when the household appliance is operating as specified, the operation of the weighing unit and the control unit is performed by operating the switch unit in the electric energy measurement display unit. By turning it on arbitrarily, the input AC current to the power supply unit of the appliance is measured via the AC device, and based on the measured AC current, the integrated electric energy and the integrated electricity charge are calculated and integrated. The energization time is measured, and a plurality of items including at least the integrated electric charge among the calculated, measured integrated electric energy, the integrated electric charge, and the integrated energization time are numerically displayed on the display unit,
By reading the displayed numerical value, it is possible to know the standard of the integrated electric charge for each household appliance. In addition, by arbitrarily turning off the operation of the weighing unit and the control unit through the operation of the switch unit, and resetting and re-operating, the standard of the integrated electric charge for each use time period of the electric appliance and the electric appliance It is also possible to know effective power saving measures by knowing fluctuations in electricity rates due to an increase in the usage period of the equipment.

[0007] In the home electric appliance with the power consumption measurement display function having the above-mentioned configuration, as the display unit in the electric energy measurement display unit, the display unit originally provided in the electric appliance also serves as the display unit. By configuring the original display of electric appliances, for example, the clock display and the display of the measured and calculated values by the measurement display unit so that they can be switched at all, the components required as the power measurement display unit are reduced as much as possible. Numerical values such as electricity rates can be displayed as predetermined while suppressing an increase in the cost of the electric appliance itself.

[0008] In the above-described home appliance with a power consumption measurement and display function, the control unit in the power consumption measurement and display unit may be a control unit originally provided in the appliance. Integrally configured, the control section is composed of a one-chip microcomputer, simplifying the circuit configuration, reducing cost and size, increasing the cost and overall size of household appliances with power consumption measurement and display functions. Can be minimized.

Further, in the household electric appliance having the power consumption measurement and display function having the above-mentioned configuration, the control unit in the power amount measurement and display section may calculate and measure the integrated power amount and the integrated power amount. By configuring the numerical value of the electricity charge integrated energizing time to be sequentially switched and displayed on the display unit in a predetermined order and at set time intervals, the electric energy and the related electric charge and the integrated energizing time are displayed. Numerical values are displayed cyclically, and by reading those numerical values, it is possible to accurately grasp the electric power usage status of each electric appliance and to greatly contribute to power saving measures in ordinary households.

[0010]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 shows a home electric appliance A having a LCD display unit 1 such as a clock display as a part of a configuration, such as a video or a television, among home electric appliances with a power consumption measurement display function according to the present invention. FIG. 3 is a block diagram showing a first embodiment applied to the present invention.

The home electric appliance A according to the first embodiment
Is a power supply unit 3 for generating a power supply necessary for the operation of each unit by an input AC current from a plug 2 that can be plugged into an outlet (not shown), in addition to the LCD display unit 1 described above. It has a main circuit 5 including a control unit 4 for controlling output to each operation unit including the unit 1.

The home appliance A has an AC (CT) 6 for measuring an input AC current from the plug 2 to the power supply unit 3, and a voltage of 100 V based on the AC current measured by the AC device 6. (Fixed) and a metering unit 7 that calculates the integrated power amount as a power factor of 100% (fixed), and the integrated power amount calculated by the metering unit 7 is multiplied by a unit price of charge (for example, 25 yen / kWh). And a control unit 8 that counts (measures) the cumulative energizing time from the time when the switch unit 9 described later is turned on to start the weighing operation, and the integrated power calculated by the weighing unit 7 and the control unit 8. An electric energy measurement and display circuit comprising an LCD display unit 1 for numerically displaying the amount, the accumulated electric charge and the accumulated energization time, and a switch unit 9 capable of turning on / off and resetting the operation of the measuring unit 7 and the control unit 8. (Den The amount measurement display portion) 10 is incorporated.

In the first embodiment, the LCD display unit 1 in the electric energy measurement display circuit 10 is also used as the LCD display unit originally provided in the electric appliance A, and the electric appliance A
The original clock display or the like and the display of the numerical value calculated by the electric energy measurement display circuit 10 can be switched by operating the switch unit 9, that is, the display mode can be switched.

As shown in FIG. 2, the LCD display unit 1 has a four-digit numerical display unit 1A in which seven segments are arranged in a figure-eight shape, and an operation display unit that blinks a dot on the left of the most significant digit. A unit symbol “yen” corresponding to a plurality of display items on the right side of the least significant digit of 1B and the numerical value display section 1A;
Unit symbol display section 1C for displaying "kWh" and "time"
When the display mode of the power amount or the like is switched by operating the switch unit 9, the integrated power amount, the integrated power fee, and the integrated power-on time calculated and timed by the power amount measurement display circuit 10 are provided. Are displayed in the order and time interval preset in the control unit 8, for example, as shown in FIG. 3, in the order of the integrated power charge, the cumulative power amount, and the cumulative power-on time, and at three-second intervals. At the same time as the corresponding numerical value is cyclically displayed on the numerical value display section 1A of the section 1,
Unit symbols are displayed in the unit symbol display section 1C in the order of "circle", "kWh", and "time" corresponding to each display item. Further, the operation display section 1B of the LCD display section 1 displays
The dots are blinked and displayed at one-second intervals.

The measuring unit 7 in the electric power measurement display circuit 10 includes a rectifying unit 7A for converting the AC current measured by the AC device 6 into a DC voltage, and a DC voltage rectified by the rectifying unit 7A in a digital value. And an A / D conversion unit 7B for converting the operation of the measurement unit 7 and the control unit 8 into ON / OFF and reset operations, and a display mode switching switch. In addition to the above, a switch for setting and inputting a change value of the unit price for calculating the integrated electricity rate to the control unit 8 is also included.

Next, the operation of the home appliance A with the power consumption measurement display function configured as described above will be briefly described with reference to the flowchart of FIG. When the operation of the measuring unit 7 and the control unit 8 in the electric energy measurement display circuit 10 is turned off by operating the switch unit 9, the electric energy measurement display is not performed, and the LCD display unit 1 of the electric appliance A is not displayed.
The electric appliance A is operating as specified while displaying the original display such as a clock.

In this state, the LCD display unit 1 is reset through the operation of the switch unit 9 and the display mode is switched to the weighing display mode, and the weighing unit 7 in the electric energy measurement display circuit 10 is operated by operating the switch unit 9. Then, the operation of the control unit 8 is turned on (steps S21 and S22).

It is determined whether the electric appliance A consumes power due to the ON operation (step S23). If there is power consumption, dots are displayed on the operation display unit 1B of the LCD display unit 1 at intervals of one second. Blinks on the display (step S24).
At the same time, the integrated power amount is calculated by the measuring unit 7 in the power amount measurement display circuit 10 as described above, and the control unit 8
In step S25, a calculation function for a predetermined amount of power, such as calculation of an integrated electricity charge according to the calculated integrated power amount and counting of the integrated power-on time, operates.

Then, the integrated power charge, the integrated power amount, and the integrated power-on time calculated by the calculation in the power amount measurement display circuit 10 are output from the control unit 8 to the LCD display 1, and the numerical value of the power charge and the corresponding value are displayed. 3 seconds in the order of the unit symbol “yen”, the numerical value of the integrated electric energy and the corresponding unit symbol “kWh”, the numerical value of the integrated energizing time and the corresponding unit symbol “time”. Are cyclically displayed on the numerical value display section 1A and the unit symbol display section 1C of the LCD display section 1 at the time intervals (steps S26 to S31).

As described above, by reading the electricity rate, the amount of electricity, and the cumulative energizing time displayed cyclically, a guideline of the electricity rate according to the power consumption of each appliance A can be obtained, and the electric power of each appliance A can be determined. It is possible to accurately grasp the usage status. In addition, by displaying a single LCD display 1 cyclically, the font of the displayed numerical value is large enough to prevent misreading, etc. The occupied area of the display unit 1 can be reduced, and the weight and size of the entire electric appliance A having the power measurement display function can be reduced.

FIG. 5 is a block diagram showing a second embodiment in which the present invention is applied to a household electric appliance A, such as a video or a television, which has an LCD display unit 1 such as a clock display as a part of the configuration in advance. is there. In the second embodiment, the control unit in the electric energy measurement display circuit 10 is integrated with the control unit 4 originally provided in the appliance A by a one-chip microcomputer, and the integrated control unit 4 is provided with a switch unit 9. Since the other configuration is the same as that of the first embodiment, the same reference numerals are given to the corresponding portions, and the description thereof is omitted.

In the second embodiment having the above-described structure, the control unit 4 is originally provided in the electric appliance A in addition to the LCD display unit 1, so that the circuit configuration is simplified, the cost is reduced, and the cost is further reduced. , And the cost and size of the entire household appliance having the power consumption measurement display function can be reduced.

FIG. 6 is a block diagram showing a third embodiment in which the present invention is applied to a household appliance A 'having no display unit, such as a refrigerator or a vacuum cleaner. In the third embodiment, the power amount measurement display circuit 10 is provided with an LCD display unit 11 dedicated to displaying the power amount and the like in addition to the measuring unit 7 and the control unit 8. The other configuration without the changeover switch is the same as that of the first embodiment. Therefore, the corresponding portions are denoted by the same reference numerals and the description thereof is omitted.

FIG. 7 shows a home appliance A 'having no display unit, such as a refrigerator or a vacuum cleaner.
FIG. 14 is a block diagram showing a fourth embodiment applied to the present invention. In the fourth embodiment, the control unit in the electric energy measurement display circuit 10 is integrated with the control unit 4 originally provided in the electric appliance A by a one-chip microcomputer, and the integrated control unit 4 is provided with a switch unit 9. Also, as in the third embodiment, a dedicated LCD display unit 11 for displaying the amount of power and the like is provided, and the other configuration is the same as that of the second embodiment. And their description is omitted.

In each of the above embodiments, the LCD display 1
Alternatively, the description has been given of a case in which the three items of the electricity rate, the amount of electricity, and the accumulated energizing time are cyclically displayed at predetermined time intervals in Section 11, but two items such as the electricity rate and the accumulated energizing time or the electricity rate and the electricity amount are described. The configuration may be such that the numerical values of the three items are displayed cyclically, and furthermore, only the electricity rates may be displayed.

[0026]

As described above, according to the present invention,
A measuring unit that uses only a current transformer without using a transformer and calculates the integrated electric energy based on the AC current measured by this current transformer, and calculates the integrated electric charge by multiplying the integrated electric energy by the unit price In addition, by simply incorporating a power measurement display unit, which has a control unit that measures the energization time and a display unit that displays these numerical values and a display unit that displays these numerical values, in a household appliance, it is easy to reduce the size of the appliance itself. It is possible to arbitrarily know the target of the electricity rate corresponding to the electric power consumption of each electric appliance while suppressing the cost increase and the increase in size, and it is possible to easily promote the power saving measures and the like in consideration of the home economy based on it. .
In addition, since it can be turned on / off and reset arbitrarily through the operation of the switch unit, it can be used as a guide to the total electricity charge for each time period when the appliance is used and to increase the usage period of the appliance. As a result, it is easy to take effective power saving measures, and it is also possible to utilize the information to judge performance degradation and abnormality of electric appliances.

In the case of adopting the configuration as described in claim 2 or 3, in addition to the above-mentioned effects, the number of components required as a power measurement display unit is reduced as much as possible to reduce the cost of the electric appliance itself. While suppressing up and enlargement,
Numerical values such as electricity charges can be displayed as predetermined.

Furthermore, by adopting the configuration as described in claim 4, the amount of electric power, the related electricity rate and the accumulated energizing time are cyclically displayed to accurately grasp the electric power usage status of each electric appliance. However, it can greatly contribute to power saving measures in ordinary households.

[Brief description of the drawings]

FIG. 1 is a block diagram showing a home appliance with a power consumption measurement display function according to a first embodiment of the present invention.

FIG. 2 is an explanatory diagram of a configuration of a display unit in the electric appliance.

FIG. 3 is an explanatory diagram showing an example of specific display contents on the display unit.

FIG. 4 is a flowchart illustrating an operation of the electric appliance.

FIG. 5 is a block diagram showing a household appliance with a power consumption measurement display function according to a second embodiment of the present invention.

FIG. 6 is a block diagram showing a household appliance with a power consumption measurement display function according to a third embodiment of the present invention.

FIG. 7 is a block diagram showing a household appliance with a power consumption measurement display function according to a fourth embodiment of the present invention.

[Explanation of symbols]

 1, 11 display (LCD display unit) 3 power supply unit 4, 8 control unit 6 AC unit 7 measuring unit 9 switch unit 10 electric energy measurement display circuit (electric energy measurement display unit) A, A 'household appliances

Claims (4)

[Claims] 1. A home electric appliance having at least a power supply unit and a control unit, a current transformer for measuring an input AC current to the power supply unit, and a current transformer based on the AC current measured by the current transformer. A measuring unit for calculating an integrated power amount by calculating a cumulative unit price by multiplying the integrated power amount calculated by the measuring unit by a unit price, and a control unit for measuring an integrated energizing time; and a measuring unit and a control unit. Display unit for numerically displaying a plurality of items including at least the integrated electric charge among the integrated electric energy, the integrated electric charge, and the integrated energizing time calculated by the unit, and turning on / off and resetting the operation of the measuring unit and the control unit. A household appliance with a power consumption measurement display function, wherein a power consumption measurement display unit including an operable switch unit is incorporated. 2. The display unit in the electric energy measurement display unit is also used as a display unit originally provided in the household appliance, and is calculated by the original display of the household electric appliance and the electric energy measurement display unit. The household appliance with a power consumption measurement display function according to claim 1, wherein the display of a numerical value is configured to be able to be replaced with any display. 3. The household device with a power consumption measurement display function according to claim 1, wherein the control unit in the power amount measurement display unit is formed integrally with a control unit originally provided in the household electric appliance. Appliances. 4. The control unit in the power measurement display unit calculates the calculated and timed integrated power amount and the integrated power rate integrated energizing time in a predetermined order on the display unit.
The home appliance with a power consumption measurement display function according to any one of claims 1 to 3, wherein the home appliance is configured to sequentially switch and display at a set time interval.