KR20230147027A - Module type electronic watt-hour meter - Google Patents

Abstract

A modular electronic power meter that can be separated into a base unit and a metering unit is disclosed. The modular electronic watt-hour meter is characterized by including a modular metering unit in which electronic components are arranged, and a modular base part separately connected to the metering unit.

Description

Module type electronic watt-hour meter}

The present invention relates to an electronic watt-hour meter, and more specifically, to a modular electronic watt-hour meter that can be separated into a base part and a metering part.

Electricity meters are installed in general homes, factories, and other places that use electricity to measure power consumption. These watt-hour meters are generally divided into mechanical watt-hour meters and electronic watt-hour meters. Electronic watt-hour meters have no mechanical moving parts compared to mechanical watt-hour meters, so they are widely used due to their high reliability and stable reading values.

In addition, not only can the device be miniaturized through circuit integration, but it also has the additional function of remote meter reading using various media (telephone lines, power lines, optical cables, wireless, etc.), so mechanical watt-hour meters are being replaced with electronic watt-hour meters.

This general electronic watt-hour meter consists of the watt-hour meter body and terminal block as one piece.

However, in electronic watt-hour meters, a situation arises in which the entire electronic watt-hour meter must be replaced for repair due to program errors, circuit board failures, etc.

To elaborate, the current electronic watt-hour meter has an integrated base unit and metering unit, so the entire watt-hour meter needs to be replaced in case of a simple failure of the metering unit, resulting in excessive work time, self-assembly, and construction costs. For example, even if a liquid crystal defect occurs, the entire watt hour meter must be replaced.

1. Korean Patent No. 10-1159753 (registration date: June 19, 2012)

The present invention was proposed to solve the problems caused by the above background technology, and its purpose is to provide a modular electronic power meter that can be separated into a base part and a metering part.

In order to achieve the problems presented above, the present invention provides a modular electronic power meter that can be separated into a base part and a metering part.

The modular electronic watt-hour meter,

A modular metering unit where electronic components are placed; and

It is characterized in that it includes a modular base part that is separately fastened to the metering part.

At this time, the metering unit includes a main body in which a fastening part is formed for fastening; and a plug electrically connected to the main body.

Additionally, the plug may include: a first plug connected to a first measurement element of the measurement unit through a first cable; and a second plug connected to the second measuring element of the measuring unit through a second cable.

In addition, the fastening part is characterized in that the central cross-section is hook-shaped and the ends protrude outward or inward.

In addition, the fastening part is characterized in that it is formed on the lower surface of the housing of the main body.

In addition, the base portion includes a plate in which a fastening hole into which the fastening part is inserted is formed; and a connecting portion into which the plug is inserted.

Additionally, the fastening hole is characterized in that it is formed on the upper surface of the plate.

Additionally, the connecting portion includes a first coupling pin into which the first plug is inserted and fastened; And a second coupling pin into which the second plug is inserted and fastened.

In addition, the connecting portion is characterized in that a storage groove is formed in which the first cable and the second cable are wound and accommodated.

Additionally, the connecting portion is disposed on a side of the plate.

According to the present invention, work time and construction costs can be reduced by replacing only the metering part when a simple failure of the watt hour meter metering part occurs.

In addition, another effect of the present invention is that work time and construction costs can be reduced by replacing the entire meter when the power meter test expiration period has expired or when there is a problem with the base part, and by replacing only the metering part when a simple failure such as a defective liquid crystal in the metering part occurs. .

1 is a conceptual diagram of a modular electronic power meter according to an embodiment of the present invention.
FIG. 2 is a diagram showing the process of fastening the metering unit to the base unit in the modular electronic power meter shown in FIG. 1.
FIG. 3 is a diagram showing a state in which fastening is completed according to the fastening process of FIG. 2.
FIG. 4 is a block diagram of the metering unit of the modular electronic power meter shown in FIG. 1.

The present invention can make various changes and have various embodiments, and specific embodiments will be illustrated in the drawings and described in detail in the detailed description. However, this is not intended to limit the present invention to specific embodiments, and should be understood to include all changes, equivalents, and substitutes included in the spirit and technical scope of the present invention.

When describing each drawing, similar reference numerals are used for similar components. Terms such as first, second, etc. may be used to describe various components, but the components should not be limited by the terms. The above terms are used only for the purpose of distinguishing one component from another.

For example, a first component may be referred to as a second component, and similarly, the second component may be referred to as a first component without departing from the scope of the present invention. The term “and/or” includes any of a plurality of related stated items or a combination of a plurality of related stated items.

Unless otherwise defined, all terms used herein, including technical or scientific terms, have the same meaning as generally understood by a person of ordinary skill in the technical field to which the present invention pertains.

Terms defined in commonly used dictionaries should be interpreted as having a meaning consistent with the meaning in the context of the related technology, and unless clearly defined in the present application, should not be interpreted in an ideal or excessively formal sense. It shouldn't be.

Hereinafter, a modular electronic power meter according to an embodiment of the present invention will be described in detail with reference to the attached drawings.

Figure 1 is a conceptual diagram of a modular electronic power meter 100 according to an embodiment of the present invention. Referring to FIG. 1, the modular electronic power meter 100 is composed of a metering unit 110 on which electronic components (not shown) are disposed, and a base unit 120 that is separately coupled to the metering unit 110.

The metering unit 110 may include a main body 111, a plug 113 electrically connected to the main body 111, and a fastening part 112 formed on the side of the main body 111 for fastening. there is.

The main body 111 includes a substrate (not shown), a housing 111-1 that is coupled to the top of the substrate to form an appearance, and electronic components that are mounted on the top surface of the substrate (not shown) and assembled in the housing 111-1. (not shown) and the like. The substrate (not shown) may be a printed circuit board (PCB). Of course, the substrate (not shown) and the housing (111-1) may be joined with an adhesive or by a bolting method. To elaborate, the substrate (not shown) consists of a patterned part and an unpatterned part, and adhesive can be applied to the unpatterned part to join it to the edge of the housing. Adhesives include silicone, epoxy, ethylene-vinyl acetate, polyolefin, styrene block copolymer, polyamide, polyester, and urethane adhesives.

Of course, alternatively, it is also possible to form a hole in a part without a pattern and insert a screw bolt into this hole to assemble it with the housing. In this case, pillars for screw bolts may be formed inside the housing. Since this structure is widely known, further explanation will be omitted.

The housing is generally formed in a box shape, and in addition, electronic components such as a display, central processing unit, terminal, and sensor system can be installed in the internal space. Of course, some of these electronic components may be mounted on a board (not shown) or connected with cables.

A fastening portion 112 for fastening to the base portion 120 is formed at the upper end of the main body 111. In particular, the fastening portion 112 may be formed integrally with the lower end of the housing 111-1. The fastening portion 112 may be shaped like a fitting protrusion. That is, the cross section is formed outward like a hook shape. Since plastic material is generally used as the material of the housing 111-1, the fastening portion 112 may have elasticity.

Therefore, when the housing 111-1 is fastened to the base portion 121, the fastening portion 112 is bent inward and is restored by elasticity to be stably inserted and fastened into the fastening hole 121-1. For this purpose, the end of the fastening portion 112 may protrude outward. Of course, alternatively, the end of the fastening portion 112 may protrude inward. In this case, based on the fastening hole 121-1 formed in the base portion 121, the side into which the fastening portion 112 is inserted is formed to be thinner than the lower portion.

The plug 113 is connected to a measurement element (not shown) via a cable 114. To elaborate, the plug 113 is composed of a first plug 113-1 and a second plug 113-2. The first plug 113-1 is connected to a PT (Potential Transformer) (not shown), which is a measuring element, through a first cable 114-1, and the second plug 113-2 is connected to a measuring element, CT (Current). Transformer (not shown) and a second cable (114-2).

Of course, the opposite connection is also possible. To elaborate, the first plug 113-1 is connected to a CT (Current Transformer) (not shown), which is a measuring element, through the first cable 114-1, and the second plug 113-2 is a measuring element. It is connected to a Potential Transformer (PT) (not shown) through a second cable (114-2).

Of course, the plug 113 may be composed of a single plug, or it may be composed of two plugs as shown in FIG. 1.

The base portion 120 includes a plate 121 fastened to the main body 111 of the metering unit 110, a connecting portion 122 disposed at the bottom of the plate 121 into which the plug 113 is inserted, etc. It can be.

A fastening hole 121-1 into which the fastening part 112 is inserted and fastened is formed on the upper surface of the plate 121. To elaborate, when the fastening part 112 is inserted in the direction of the arrow inside the plate 121, the protruding portion at the end of the fastening part 112 is inserted into the fastening hole 121-1 and protrudes.

The connecting portion 122 includes a first coupling pin 122-1 into which the first plug 113-1 is inserted and a second coupling pin 1222 into which the second plug 113-2 is inserted and coupled. .

Additionally, the connecting portion 122 is formed on the side of the plate 121. The connecting portion 122 may be constructed separately from the plate 121 and then attached with an adhesive, or may be formed integrally with the surface of the plate 121. The coupling pins 122-1 and 122-2 are connected to terminals (not shown) connected to the power line and load line.

A storage groove 122-3 through which the cables 114-1 and 114-2 can be wound and stored may be formed in the connecting portion 122. To elaborate, the cables 114-1 and 114-2 are covered with flexible wire and insulated. Therefore, since the cables 114-1 and 114-2 have a length, a storage groove 122-3 is provided to accommodate the remaining cable.

FIG. 2 is a diagram showing the process of fastening the metering unit 110 to the base unit 120 in the modular electronic power meter 100 shown in FIG. 1. Referring to FIG. 2, the first and second plugs 113-1 and 113-2 are inserted into the first and second coupling pins 122-1 and 122-2, respectively, and the metering unit 110 is moved in the direction of the right arrow. Move it and fasten it to the base portion 120. Thereafter, the fastening part 1120 is brought into close contact with the base part 120 to be completely assembled.

FIG. 3 is a diagram showing a state in which fastening is completed according to the fastening process of FIG. 2. Referring to FIG. 3, it shows a state in which the fastening part 112 is fastened to the outside of the plate 121 of the base part 120. Additionally, it shows the cables 114-1 and 114-2 stored in the connecting portion 122.

Therefore, since the base part 120 mainly consists of a terminal and a connecting part, the probability of failure is low, and only the metering part 110 can be replaced with a new one. To elaborate, when replacing the metering unit 110 due to a simple failure, the metering unit 110 is separated from the combination of the base unit 120 and the metering unit 110, and the cables 114-1 and 114-2 and the plug 113- 1,113-2) from the connecting part 122, fasten the cables 114-1, 114-2 and plugs 113-1, 113-2 of the new metering part 110 to the connecting part 122 and insert the storage groove ( Insert the cable into 122-3) and fasten it to the coupling hook between modules 110 and 120 to complete the replacement.

FIG. 4 is a block diagram of the metering unit 110 of the modular electronic power meter 100 shown in FIG. 1. Referring to FIG. 4, the metering unit 110 includes a main body 111, a plug 113 electrically connected to the main body 111, and a fastening part 112 formed on the side of the main body 111 for fastening. It consists of, etc.

In particular, the main body 111 is mounted on a substrate (not shown), a housing 111-1 that is coupled to the top of the substrate to form an appearance, and is mounted on the top surface of the substrate (not shown) and assembled in the housing 111-1. It is composed of electronic components (not shown), etc.

Electronic components may include a central processing unit 410, a measurement unit 420, a manipulation unit 430, a display 440, etc. The central processing unit 410 may include a microprocessor, microcomputer, memory, etc. The measurement unit 420 may be composed of a first measurement element connected to the first cable 114-1 and a second measurement element connected to the second cable 114-2. For example, the first measurement element may be composed of three CTs (Current Transformers) for measurement of each phase. The second measurement element may be composed of, for example, three potential transformers (PTs).

The signal measured through the measuring unit 420 calculates and reads the signal value in the central control unit (CPU, not shown), calculates and stores meter reading data and data by leakage/conductivity, and displays them (440). ) is displayed.

The control panel 430 may be a button for setting or changing information and functions of the power meter.

The display 440 performs a function of displaying information such as accumulated power amount. To this end, the display 440 may be a liquid crystal display (LCD), a light emitting diode (LED) display, an organic LED (OLED) display, a touch screen, or a flexible display. In the case of a touch screen, it can also be used as the manipulation unit 430.

100: Modular electronic power meter
110: Weighing unit
111: main body 111-1: housing
112: fastening part 113: plug
113-1: first plug 113-2: second plug
114: cable
114-1: first cable 114-2: second cable
120: base part
121: plate 122: connecting part
122-1: first coupling pin 122-2: second coupling pin
122-3: Storage groove

Claims (1)

A modular metering unit 110 where electronic components are placed; and
It includes a modular base unit 120 that is separately coupled to the metering unit 110,
The metering unit 110,
A main body 111 in which a fastening portion 112 is formed for fastening; and
Includes a plug 113 electrically connected to the main body 111,
The plug 113 is,
a first plug (113-1) connected to the first measuring element of the measuring unit (420) through a first cable (114-1); and
It includes a second plug (113-2) connected to the second measuring element of the measuring unit 420 through a second cable (114-2),
The base portion 120 includes a plate 121 in which a fastening hole 121-1 is formed into which the fastening portion 112 is inserted so that only the metering portion 110 can be replaced in the event of a simple failure; and
It includes a connecting portion 122 into which the plug 113 is inserted,
A modular electronic power meter, characterized in that a storage groove (122-3) is formed in the connecting portion (122) into which the first cable (114-1) and the second cable (114-2) are wound and accommodated.