JP2001147241A - Measuring apparatus for consumed power - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain real-time information regarding consumed power in a general household. SOLUTION: The rotational speed of a rotary disk 111 of a household watthour meter 10 is detected by an optical sensor 20. On the basis of the rotary disk 111, real-time consumed power or a real-time consumed current is found. Information regarding consumed power such as momentary consumed power, a momentary consumed current, a power amount per unit time, an integrated power amount, a consumption rate per unit time, an integrated consumption rate, a comparison value with consumed power in the past or the like is displayed on a power display part 40.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus for measuring power consumption in a general house in real time.

[0002]

2. Description of the Related Art Conventionally, the amount of power consumption in a general house is checked monthly by the power company by a watt hour meter installed in the power receiving section of each house, and the amount of power consumption and the bill for use are calculated. Each household has been contacted. In order to confirm this power consumption, the power consumption measured by the watt-hour meter of each house is transmitted to a center device installed in a sales office of a power company via a distribution line or a communication line, where the power consumption of each house is measured. An automatic meter reading system for collectively collecting the amount of power consumption has been developed.

On the other hand, in recent years, energy saving has come to be called out, and energy-saving type devices have been widely used in home electric appliances, and a device which measures and displays the power consumption of each device at an outlet portion has been developed. Have been.

[0004]

However, in individual houses, the amount of power consumption can be determined only on a monthly basis according to the bill from the power company. It is only at the time of purchase, and it is a fact that you do not care much when actually using it.

It is unclear how much electricity is used at that time, and it can be seen that the power is exceeded only when the power breaker operates beyond the contracted power and the power supply is cut off. It is the current situation.

Therefore, it is required to measure the power consumption in real time. For this purpose, it is necessary to insert an ammeter into the power line. In this case, only a qualified contractor can perform the construction. It was not economical because it required construction costs.

At present, as described above, devices capable of measuring the amount of power consumption in a house are commercially available. However, since the device is of an outlet connection type, only the power consumption of the device connected to the outlet can be measured. It is not possible to know the power consumption of the whole house.

[0008] In recent years, with the increasing awareness of energy saving and environmental conservation, there has been a demand for a device capable of frequently checking the energy consumption of each house.

It is an object of the present invention to provide a power consumption measuring apparatus capable of constantly grasping the power consumption in a house and monitoring power consumption in real time in order to solve the above-mentioned problem. .

[0010]

For this purpose, a power consumption measuring apparatus according to a first aspect of the present invention includes a means for detecting a rotation speed of a rotating disk of a watt hour meter installed in a power receiving section of a house in a non-contact manner; Means for calculating real-time power consumption or current consumption based on the rotation speed of the rotating disk.

According to a second aspect of the present invention, there is provided a power measuring device for measuring the current of one of a single-phase two-wire power lead-in line of a power receiving part of a house or a neutral wire of a single-phase three-wire power lead-in line. It is configured to include a means for non-contact detection, and a means for calculating real-time power consumption or current consumption based on the detected current.

According to a third aspect of the present invention, in the first or second aspect, the instantaneous power consumption, the instantaneous current consumption, the amount of power per unit time, and the integrated power are based on the obtained power consumption or current consumption. The apparatus is provided with means for displaying information on power consumption, such as the amount, the usage fee per unit time, the accumulated usage fee, and a comparison value with the past power consumption.

[0013]

DESCRIPTION OF THE PREFERRED EMBODIMENTS [First Embodiment] FIG. 1 is a block diagram of a system of a power consumption measuring apparatus according to a first embodiment of the present invention.

Reference numeral 10 denotes a watt hour meter installed on a power receiving unit such as an outer wall of each house, which includes a power amount measuring unit 11 and an integrated power amount (KW / h) display unit 12. Reference numeral 111 denotes a rotating disk whose rotation speed changes in proportion to the power used.

Reference numeral 20 denotes an optical sensor for detecting the power consumption in real time. The light emitting unit 21 emits visible light, infrared light, and other light toward the irregularities on the peripheral end surface of the rotating disk 111. A light receiving unit 22 for receiving the reflected light is provided. At this time, it is desirable to apply a predetermined modulation to the light from the light emitting unit 21 in order to avoid the influence of external light.

Reference numeral 30 denotes a power measuring unit which takes in a change in the received signal corresponding to the unevenness of the peripheral end surface of the rotating disk 111 detected by the optical sensor 20, and obtains the number of peak values per unit time, frequency, In addition, the rotation speed (the number of rotations per unit time) of the rotating disk 111 is detected, and power consumption, current consumption, and the like are calculated based on the rotation speed.

Reference numeral 40 denotes a power display unit, and a power measurement unit 30
The power consumption data obtained in Step 2 is fetched, and the instantaneous power consumption, instantaneous current consumption, power consumption per unit time, total power consumption, usage fee per unit time, total usage fee, and comparison values with past power consumption And other information about the used power. Reference numeral 41 denotes a display processing unit that performs processing for these displays.

Signals are exchanged between the optical sensor 20 and the electric power measuring unit 30 and between the electric power measuring unit 30 and the electric power display unit 40 by wire or wirelessly.

As described above, the power consumption measuring apparatus according to the present embodiment detects the amount of power used in the entire house by the optical sensor 20 and the power measuring unit 30 in real time and displays it on the power display unit 40. By confirming the display contents of the unit 40 (real-time power consumption, maximum power, power consumption per unit time, accumulated power consumption for the current month, usage fee up to the present of the current month, etc.), awareness of energy saving is raised. Can be improved. In addition, in order to measure power consumption in a non-contact manner,
No special qualification is required for the construction, and anyone can easily install it.

[Second Embodiment] FIG. 2 shows a second embodiment of the present invention.
It is a block diagram of the system of the power consumption measuring device which shows embodiment. In this case, the electric power meter 10 installed by the electric power company as shown in FIG.
0 is attached without contact.

FIG. 2 shows a single-phase three-wire power lead-in line 50, and a current probe 6
0 is attached. This neutral line 51 is activated lines 52 and 5
Since the current return path is 3, the current consumed in the entire house can be detected by detecting the current.

Reference numeral 70 denotes a power measuring unit, and the current probe 6
The consumed current detected at 0 is taken in, and the used power and the like are calculated.

Reference numeral 80 denotes a power display unit, and the current probe 6
The data of the current value obtained at 0 is taken in, and the instantaneous power consumption, instantaneous current consumption, power consumption per unit time, cumulative power consumption, usage fee per unit time, cumulative usage fee, and comparison with past power consumption Displays information about the power used, such as the value. Reference numeral 81 denotes a display processing unit that performs processing for these displays. Signals are exchanged between the power display unit 80 and the power measurement unit 70 by wire or wirelessly.

When the service line is a single-phase two-wire system,
The current probe 60 is attached to one of the two service lines.

[0025]

As described above, according to the present invention, real-time information on power consumption can be taken in each house, so that instantaneous power consumption, instantaneous current consumption, power per unit time, integrated power, unit time You can easily check information on power consumption such as usage fee per charge, accumulated usage fee, and comparison value with past power consumption, and easily detect unnecessary electrical equipment, for example. It is possible to raise awareness about energy conservation and, consequently, to raise awareness about conservation of the global environment.

[Brief description of the drawings]

FIG. 1 is a block diagram of a system of a power consumption measuring device according to a first embodiment of the present invention.

FIG. 2 is a block diagram of a system of a power consumption measuring device according to a second embodiment of the present invention.

[Explanation of symbols]

10: Watt hour meter, 11: Electric energy measuring unit, 111: Rotating disk, 12: Integrated power display unit 20: Optical sensor, 21: Light emitting unit, 22: Light receiving unit 30: Electric power measuring unit 40: Electric power display unit, 41 : Display processing unit 50: power lead-in line, 51: neutral line, 52, 53: active line 60: current probe 70: power measurement unit 80: power display unit, 81: display processing unit

Claims (3)

[Claims] 1. A means for non-contactly detecting a rotation speed of a rotating disk of a watt-hour meter installed in a power receiving unit of a house, and a means for obtaining real-time power consumption or current consumption based on the rotating speed of the rotating disk. A power consumption measuring device comprising: 2. A means for contactlessly detecting the current of one of the single-phase two-wire power supply lines or the neutral line of the single-phase three-wire power supply line of the power receiving part of the house, Means for calculating real-time power consumption or current consumption based on the detected current. 3. An instantaneous power consumption, an instantaneous current consumption, a power consumption per unit time, an integrated power consumption, a usage fee per unit time, a cumulative usage based on the obtained power consumption or current consumption according to claim 1 or 2. A power consumption measuring device comprising means for displaying information about power consumption, such as a fee, a comparison value with past power consumption, and the like.