JP4190306B2 - Energy meter with communication function - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention is installed between a power distribution line (service line) and a customer indoor wiring (customer line) in order to supply (feed) electric power to a customer from an electric power supplier such as an electric power company. It is related with the watt-hour meter with a communication function formed by adding a communication function to the watt-hour meter (WHM) used by this.
[0002]
[Prior art]
By adding a communication function to the watt-hour meter, it is possible to provide an automatic metering or centralized metering function for automatically and intensively metering the accumulated energy for each customer at a remote location such as a management center. A signal relay function for instructing on / off of various electrical devices such as air conditioners and videos from the outside, etc., based on the watt hour meter installed every time, and the power usage amount that varies in the time zone at the management center etc. Just a function for summing up and checking every contract time, or a simple function for integrating the amount of energy, such as providing a security function for remotely monitoring the indoor situation by turning on a security camera switch installed indoors. It is possible to use the electricity meter effectively for both the electric power supplier and the consumer by providing various functions that are meaningful for the operation of the power supply business and the daily life. It is.
[0003]
As an energy meter with a communication function that has such usefulness, inductive power is conventionally provided with a meter driving portion that measures power by measuring the rotation of a rotor disk and displays the measured value as a pointer or current character. In the meter, a pulse transmission device that generates a fixed number of electrical pulses for one rotation of the rotor disk is incorporated, and the pulse signal from this pulse transmission device is sent to the data processing device to process the data, or A device that can perform automatic meter reading or intensive meter reading by sending it to a display device at a remote position and displaying it is known (for example, see Non-Patent Document 1).
[0004]
[Non-Patent Document 1]
Published by the Japanese Standards Association, “JIS electricity meter (single meter) C1211”, first published on January 31, 1995, p18-38
[0005]
[Problems to be solved by the invention]
In the conventional watt-hour meter described in Non-Patent Document 1, a built-in communication function device is a pulse transmission device dedicated to automatic meter reading or centralized meter reading, and has a signal relay function and security as described above. Various functions that are not directly related to the original function of the watt hour meter, such as functions, cannot be provided, and the effective usage range due to the addition of communication functions is narrow. In addition, because of the need to demonstrate a highly reliable meter-reading function, the pulse transmitter is placed inside the box-shaped case so that the number of pulses transmitted by the pulse transmitter is exactly proportional to the number of rotations of the rotor disk in the instrument drive part. When it is required to be incorporated into the watt hour meter main body, the watt hour meter including the case and the pulse transmitter is required when the watt hour meter is tested every 10 years stipulated by the Measurement Law. Even if it is judged that it can be used repeatedly in the next cycle if it is removed and tested for repair, it is necessary to repair the entire watt-hour meter that has been removed. In addition to being complicated and cumbersome, it takes extra time and cost for the work, and if it is determined that replacement is required as a result of the test, there is no failure and it is still fully used. We must replace the entire electricity meter as including a pulse transmitter in the state possible, the economic burden on the electric power supply company there is a problem that a very large.
[0006]
The present invention has been made in view of the above circumstances, and includes a communication terminal station that exhibits various functions such as a signal relay function and a security function as well as an automatic or centralized meter reading function, including its driving power supply. It can be easily and easily added to the watt-hour meter at any time without applying any burden to the main body of the meter, and the work involved in the verification and repair of the watt-hour meter is facilitated and the economy when it is necessary to replace it. It is an object of the present invention to provide a watt-hour meter with a communication function that can suppress the burden on the environment to a minimum, and can reliably prevent mischief when the communication function is added and used.
[0007]
[Means for Solving the Problems]
In order to achieve the above object, a watt-hour meter with a communication function according to the present invention is a power having a terminal block that houses a plurality of terminals that can be electrically connected to a power distribution line and a customer indoor wiring at the bottom. A watt-hour meter with a communication function configured by adding a communication function to a watt-hour meter built in a box-like case with the front surface of the terminal block exposed in a state where the front surface of the terminal block is exposed. And a plug connected to the communication power supply unit on the cover, which is detachable from the front side of the watt hour meter and covers the front surface of the terminal block in the mounted state. When the cover is attached to the box-shaped case, the cover-side plug can be inserted into the terminal block on the watt-hour meter side. Connection Ability outlets are formed, on the cover, a pair of left and right frame plates extending upwardly along the outer surface of the left and right side plates of the box-like casing is provided, the upper end portions of the pair of left and right frame plates A communication terminal station is connected and fixed over the space, and a communication power supply unit is built in a cover that covers the front surface of the terminal block .
[0008]
According to the present invention having the above-described configuration, the cover provided with the communication terminal station and the communication power supply unit is placed on the front of the watt hour meter with respect to the box-shaped case so that the plug on the cover side is inserted into the outlet on the watt hour meter side. Just by mounting from the side with a one-touch operation, it covers the exposed part of the front of the terminal block, and at the same time, without receiving complicated power connection work for taking out power by receiving power supply from a set of terminals in the terminal block, and It is possible to easily and easily attach a communication terminal station in a state where the communication function can be immediately exerted without imposing any burden on the weighing main unit. Since the communication terminal station is separate from the measurement main body when the cover is attached, the communication terminal station can be used as an air conditioner, video, etc. based on the watt-hour meter in addition to the automatic meter reading function or the central meter reading function. Relay function when ordering on / off orders of various electrical devices from outside the office, a function to collect and check the amount of power used for different rates in the time zone for each contract time zone at the management center, etc. Effective as a communication function device for demonstrating a variety of functions that are meaningful in the operation of power supply operations and daily life, such as a security function to monitor the indoor situation by turning on and operating the security camera switch from outside It is possible to use it.
[0009]
In addition, the cover with the communication terminal can be removed from the box-like case with built-in measurement main unit. By removing the cover from the box-shaped case, only the measuring body in the box-shaped case can be verified and the verification and repair work can be done very easily and at a low cost. It is only necessary to replace the watt-hour meter having a built-in measuring body, and the cost required for the replacement can be minimized to reduce the economic burden on the power supplier. In addition, in the communication function addition state with the cover attached, the front of the electrical connection part by the plug and outlet for power supply to the communication power supply unit is concealed by the cover, so that it is an external communication terminal station, It is possible to surely prevent mischief and the like with respect to the electrical connection portion and finish the appearance neatly.
[0010]
In the watt-hour meter with a communication function according to the present invention, in particular, the cover is provided with a pair of left and right frame plates extending upward along the outer surfaces of the left and right side plate portions of the box-shaped case. By adopting a configuration in which the communication terminal station is connected and fixed between the upper ends of the pair of frame plates and the communication power supply unit is built in the cover, the entire cover including the communication terminal station is front-facing. It can be constructed into a rigid ramen structure with a round shape, and it is durable without being deformed or damaged when used alone or when attached to a watt-hour meter. Can increase the sex.
[0011]
Further, in the case where the entire cover including the communication terminal station has a front-view shape-shaped ramen structure, the communication power supply unit and the communication terminal are attached to either one of the pair of left and right frame plates as claimed in claim 2. By installing the wiring or wiring board that electrically connects to the station, no external wiring work is required, and the work for adding the communication function to the watt-hour meter can be simplified and reduced in cost, and the communication function It is possible to reliably prevent mischief of wiring and the like when adding.
[0012]
Further, the communication terminal station in the watt-hour meter with communication function according to the present invention is preferably a bidirectional digital communication terminal unit such as a mobile phone. By using such a two-way communication terminal unit, in addition to the automatic metering or centralized metering function on the electric power supplier side, an answerback that notifies the power consumer of the results of power consumption, signal relay function, etc. Functions can also be added. In particular, when using a PHS communication terminal station as described in claim 4, high-speed digital communication by PIAFS is possible by using in combination with a personal computer, a mobile computer, etc., automatic meter reading function, signal relay function, It is possible to reduce the communication cost for exerting the security function and the like.
[0013]
Furthermore, the present invention can be applied to an inductive watt-hour meter, but it is particularly desirable to apply to an electronic watt-hour meter as set forth in claim 5. Since this electronic watt-hour meter can substantially reduce the volume ratio by half compared with the induction type, it is possible to reduce the size and weight of the cover provided with the communication terminal station, and thus to make the watt-hour meter with communication function compact.
[0014]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the drawings.
FIG. 1 is an exploded perspective view showing a state when a communication function is added to a single-phase three-wire or three-phase three-wire electronic watt hour meter, and FIG. 2 is a front view of the electronic watt hour meter. This electronic watt-hour meter 1 is provided with a terminal block 4 having a plurality of female terminals 3... Which can be electrically connected to and connected to a power distribution line (service line) and a customer indoor wiring (customer line). The electronic measuring main body 5 is configured to be embedded in a resin or metal box-like case 2 with the front surface of the female terminals 3 in the terminal block 4 exposed forward. The box-like case 2 generally includes an open / close switch (not shown) that can turn on and off the electrical continuity between the weighing main unit 5 and the power distribution line and the customer's indoor wiring. As a matter of course, the open / close switch portion may not be built in.
[0015]
A plug, which will be described later, can be inserted into the terminal block 4 of the electronic watt-hour meter 1, and a set of female types in which a power distribution line can be inserted and connected among the plurality of female terminals 3 in the inserted state. An outlet 6 that can be electrically connected to the terminal 3 is formed in a front opening state.
[0016]
On the other hand, a plate-like cover 7 having a width corresponding to the lateral width of the terminal block 4 is provided separately from the electronic watt-hour meter 1 described above. A power supply unit 8 for communication (a specific configuration is omitted) is incorporated in the plate cover 7, and a box-like case in the electronic watt-hour meter 1 is disposed at both ends in the width direction of the plate cover 7. A pair of left and right frame plates 9, 9 extending upward along the left and right side plate portions 2a, 2a are integrally connected to the cover 7, and between the upper end portions of the pair of left and right frame plates 9, 9. The communication terminal station 10 is connected and fixed over this, thereby constituting the cover unit 11 with a communication terminal station having a ramen structure with a front view shape. The cover unit 11 is detachable from the front side of the box-shaped case 2 in the electronic watt-hour meter 1, and in the mounted state, the plate-shaped cover 7 has a plurality of female terminals 3 of the terminal block 4. While covering the entire front surface, the communication terminal station 10 is configured to be disposed immediately above the box-shaped case 2 in the electronic watt-hour meter 1.
[0017]
The plate-like cover 7 in the cover unit 11 is connected to the communication power supply unit 8 incorporated therein and is inserted into the outlet 6 on the terminal block 4 side so that the communication power supply unit 8 is connected. A plug 12 that can be electrically connected to a pair of female terminals 3 is provided so as to project rearward, and one of the pair of left and right frame plates 9 and 9 includes a communication power supply unit 8 and a communication terminal station 10. A wiring board 13 for electrically connecting the two is housed.
[0018]
Note that the communication terminal station 10 which is a member of the cover unit 11 with a communication terminal station having a ramen structure with a front-view shape is a weak wireless terminal station, an infrared communication terminal station, an Ethernet equipped with an Ethernet LAN interface. Either a terminal station or a PHS communication terminal station may be used, but a PHS communication terminal station capable of high-speed digital communication and having an answer back function is most preferable.
[0019]
In the electronic watt-hour meter 1 having the above-described configuration, the cover unit 11 with a communication terminal station having a front-view-shaped ramen structure is connected to the front of the watt-hour meter 1 as shown in FIGS. 1, 3, and 4. From the side, a pair of left and right frame plates 9, 9 are slid along the outer surfaces of the left and right side plate portions 2a, 2a of the box-like case 2, and a plug 12 protruding rearward from the plate-like cover 7 along with the slide The front exposed portions of the plurality of female terminals 3 in the terminal block 4 are formed by pressing the box-shaped case 2 toward the rear R so as to be inserted into the outlet 6 on the meter 1 side. The communication power unit 8 is electrically connected to the pair of female terminals 3 through the plug 12 and the outlet 6 at the same time as covering with the cover 7, and complicated wiring work for taking out the communication power supply is required. There is no electricity The amount meter 1 to the metering body part 5 can be attached immediately communication terminal station 10 in a state capable of exhibiting a communication function at any time simply easily energy meter 1 without imposing a no burden.
[0020]
When the cover unit 11 is attached, the communication terminal station 10 is separate from the measuring main body unit 5, so that the power amount measured by the communication terminal station 10 is measured at the remote control center. In addition to being used for automatic meter reading or centralized meter reading function, etc., other than that, signal relay function when commanding on / off of various electric devices such as air conditioner and video from the electricity meter 1 In addition, a function to collect and check the amount of power used at different rates in the time zone for each contract time zone at the management center, etc., and monitor the indoor situation by operating the security camera switch installed indoors from the outside It can be effectively used as a communication function device for exhibiting a wide variety of functions that are meaningful in the operation of power supply operations such as security functions and in daily life.
[0021]
Moreover, since the cover unit 11 provided with the communication terminal station 10 can be detached from the electronic watt-hour meter 1 as desired, it can be tested every 10 years and 1 cycle stipulated by the Measurement Law. By detaching the cover unit 11 from the box-shaped case 2, only the measuring body 5 in the box-shaped case 2 can be verified, and the verification / repair work can be performed very easily and at a low cost. However, it is sufficient to replace only the watt-hour meter 1 with the built-in metering main body 5 even when necessary, and the cost required for replacement can be minimized and the economic burden on the power supplier can be reduced. In addition, in a communication function addition state in which the cover unit 11 is mounted, the front exposed portion of the female terminals 3... In the terminal block 4 is covered with the plate cover 7 and power is supplied to the communication power supply unit 8. Since the front surface of the electrical connection portion by the plug 12 and the outlet 6 is also concealed by the cover 7, it is possible to reliably prevent mischief and the like with respect to the electrical connection portion while being the external communication terminal station 10, and It can be finished neatly in appearance.
[0022]
In addition, although the said embodiment demonstrated the example applied to the electronic watt-hour meter small in volume, you may apply to an induction type watt-hour meter.
[0023]
As described in the above embodiment, the communication terminal station 10 is preferably a PHS communication terminal station. However, a bidirectional digital communication terminal station such as a mobile phone may be used.
[0024]
Further, in the above embodiment, the communication power supply unit 8 is incorporated in the plate-like cover 7. However, the power supply unit 8 may be installed anywhere in the cover unit 11. In addition, when the communication power supply unit 8 and the communication terminal station 10 are electrically connected, a simple wiring may be used instead of the wiring board 13.
[0025]
【The invention's effect】
As described above, according to the present invention, the front exposed portion of the terminal block is covered at the same time as the cover is mounted by one touch from the front side of the watt hour meter to the box-like case. , Without the need for complicated wiring work for power supply removal, and without any burden on the main body of the weighing unit, immediately receiving power supply from a set of terminals in the terminal block and demonstrating the communication function In addition to automatic communication or centralized metering function, the communication terminal station can be easily and easily attached at any time. Function to check the amount of power used for different time periods at the management center, etc., and to remotely check the switch of the security camera installed indoors. In order to exhibit the meaningful various functions inner situation on to engage in the operational and daily life of the power supply business such like security function of monitoring can be effectively utilized.
[0026]
In addition, the work involved in the verification and repair of watt-hour meters can be done very easily and at low cost, and when replacement is necessary, only the watt-hour meter can be replaced, minimizing the cost of replacement and supplying power. Economic burden on the operator can be reduced. In addition, in the communication function addition state with the unit cover attached, it is possible to conceal the front of the electrical connection part by the plug and outlet for supplying power to the communication power supply unit with the cover covering the front of the terminal block, Even though it is an external communication terminal station, it is possible to reliably prevent mischief and the like with respect to the electrical connection portion and the like, and to be finished neatly in appearance.
[0027]
In particular, as described in claim 4, by using a PHS communication terminal station as a communication terminal station, high-speed digital communication by PIAFS is possible in combination with a personal computer, a mobile computer, etc., and a meter reading function and an answer back function are provided. It can be demonstrated.
[Brief description of the drawings]
FIG. 1 is an exploded external perspective view illustrating a work situation when a communication terminal station is attached to a single-phase three-wire or three-phase three-wire electronic watt-hour meter as a watt-hour meter with a communication function according to the present invention. FIG.
FIG. 2 is a front view of the same electronic watt-hour meter.
FIG. 3 is a partially cutaway side view for explaining a work situation when a communication terminal station is attached to the electronic watt-hour meter.
FIG. 4 is a partially cut-out bottom view for explaining a work situation when a communication terminal station is attached to the electronic watt-hour meter.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Electronic watt-hour meter 2 Box-shaped case 2a, 2a Both right-and-left board part 3 Female terminal 4 Terminal block 5 Weighing body part 6 Outlet 7 Plate-shaped cover 8 Communication power supply unit 9 Frame board 10 Communication terminal station 12 Plug 13 Wiring board

Claims (4)

A power metering body with a terminal block that houses multiple sets of terminals that can be electrically connected to the power distribution line and the customer's indoor wiring in a box-shaped case with the front surface of the terminal block exposed. An energy meter with a communication function configured by adding a communication function to a built-in energy meter,
A plug having a communication terminal station and a communication power supply unit, which is detachable from the front side of the watt-hour meter and covers the front surface of the terminal block in the mounted state, and is connected to the communication power supply unit Is protruded rearward, and when the cover is attached to the box-shaped case, the cover-side plug can be inserted into the terminal block on the watt-hour meter side. An outlet that can be electrically connected to the terminal is formed, and the cover is provided with a pair of left and right frame plates that extend upward along the outer surfaces of the left and right side plate portions of the box-shaped case. A watt-hour meter with a communication function, wherein a communication terminal station is connected and fixed between upper end portions of a board, and a power supply unit for communication is built in a cover that covers the front surface of the terminal block . The watt-hour meter with a communication function according to claim 1 , wherein a wiring or a wiring board for electrically connecting the communication power supply unit and the communication terminal station is housed in one of the pair of left and right frame plates. The watt-hour meter with a communication function according to claim 1 or 2 , wherein the communication terminal station is a PHS communication terminal station. The watt-hour meter with a communication terminal station according to any one of claims 1 to 3 , wherein the target watt-hour meter is an electronic watt-hour meter.

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