JPH084623Y2 - Electricity meter - Google Patents
Electricity meterInfo
- Publication number
- JPH084623Y2 JPH084623Y2 JP1989100457U JP10045789U JPH084623Y2 JP H084623 Y2 JPH084623 Y2 JP H084623Y2 JP 1989100457 U JP1989100457 U JP 1989100457U JP 10045789 U JP10045789 U JP 10045789U JP H084623 Y2 JPH084623 Y2 JP H084623Y2
- Authority
- JP
- Japan
- Prior art keywords
- power supply
- load
- control circuit
- phase
- load control
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
Description
【考案の詳細な説明】 ［産業上の利用分野］ この考案は、電源が欠相状態であっても動作を継続で
きる電力量計に関するものである。DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention relates to a watt hour meter capable of continuing operation even when a power source is in a phase failure state.
特に、磁気カード等を使った前納式（プリペイド方
式）の電力量計に関するものである。In particular, it relates to a prepayment type (prepaid type) watt-hour meter using a magnetic card or the like.
［従来の技術］ 従来例の構成を第４図を参照しながら説明する。第４
図は、従来の電力量計を示すブロック図である。[Prior Art] The configuration of a conventional example will be described with reference to FIG. Fourth
The figure is a block diagram showing a conventional watt hour meter.
第４図において、従来の電力量計は、図示しない単相
３線式の電源に接続された電源端子（1S）、（2S）、
（3S）と、これらの電源端子（1S）〜（3S）に接続され
た電力量計量装置（１）と、電源端子（1S）〜（3S）に
接続された電源回路（２）と、磁気カード（３）と、こ
の磁気カード（３）の引き込み、排出等を行いかつ金額
データ等の読み込み、書き換えを行う磁気カード制御回
路（４）と、電力量計量装置（１）、電源回路（２）及
び磁気カード制御回路（４）に接続されたCPU（５）
と、このCPU（５）に接続された操作スイッチ回路
（６）と、CPU（５）に接続された表示回路（７）と、
この表示回路（７）に接続された表示部（８）と、CPU
（５）及び電源端子（1S）に接続された（1S）側の負荷
制御回路（９）と、この負荷制御回路（９）に接続され
かつ電力量計量装置（１）及び負荷端子（1L）、（2
L）、（3L）の間に接続された負荷開閉器（10）とから
構成されている。なお、電源端子（2S）及び負荷端子
（2L）は中性点である。In FIG. 4, the conventional watt-hour meter is a power supply terminal (1S), (2S), which is connected to a single-phase three-wire type power supply (not shown).
(3S), a power meter (1) connected to these power supply terminals (1S) to (3S), a power supply circuit (2) connected to the power supply terminals (1S) to (3S), and a magnetic field. A card (3), a magnetic card control circuit (4) that pulls in and discharges the magnetic card (3), and reads and rewrites monetary amount data, an electric energy measuring device (1), a power supply circuit (2) ) And the CPU (5) connected to the magnetic card control circuit (4)
An operation switch circuit (6) connected to the CPU (5), a display circuit (7) connected to the CPU (5),
A display unit (8) connected to the display circuit (7) and a CPU
(5) and the load control circuit (9) on the (1S) side connected to the power supply terminal (1S), and the electric energy metering device (1) and the load terminal (1L) connected to this load control circuit (9) , (2
L) and (3L), and a load switch (10) connected between them. The power supply terminal (2S) and load terminal (2L) are neutral points.
つぎに、上述した従来例の動作を説明する。 Next, the operation of the above-mentioned conventional example will be described.
磁気カード（３）が挿入されると、磁気カード制御回
路（４）は駆動装置によりその磁気カード（３）を内部
に引き込む。そのとき、図示しない磁気ヘッドにより金
額データ等が読み込まれる。When the magnetic card (3) is inserted, the magnetic card control circuit (4) pulls the magnetic card (3) inside by the driving device. At that time, the amount data and the like are read by a magnetic head (not shown).
CPU（５）は、読み込まれた金額データに基づいて、
残金額があるかどうかを判断し、残金額がある場合には
負荷に電気を供給する。つまり、負荷制御回路（９）に
より負荷開閉器（10）を閉制御する。The CPU (5), based on the read amount data,
Judge whether there is a remaining amount of money, and if there is a remaining amount of electricity, supply electricity to the load. That is, the load control circuit (9) controls the load switch (10) to be closed.
また、残金額がなくなった場合には負荷への電気を遮
断するために、負荷制御回路（９）により負荷開閉器
（10）を開制御する。Further, when the remaining amount of money runs out, the load control circuit (9) controls the opening of the load switch (10) in order to cut off the electricity to the load.
しかしながら、負荷開閉器（10）の制御用電源（1S）
が欠相状態になると、負荷開閉器（10）を開閉制御でき
ず、他の機能は動作できるにもかかわらず、停止せざる
を得なかった。However, the power supply (1S) for controlling the load switch (10)
When was in the open phase state, the load switch (10) could not be controlled to open / close, and other functions could operate, but had to be stopped.
［考案が解決しようとする課題］ 上述したような従来の電力量計では、負荷開閉器（1
0）の制御用電源が欠相状態になると、負荷開閉器（1
0）を制御できないという問題点があった。[Problems to be Solved by the Invention] In the conventional electricity meter as described above, the load switch (1
When the control power supply for (0) becomes open phase, the load switch (1
There was a problem that 0) could not be controlled.
この考案は、上述した問題点を解決するためになされ
たもので、制御用電源が欠相状態でも負荷開閉器を制御
することができる電力量計を得ることを目的とする。The present invention has been made in order to solve the above-mentioned problems, and an object thereof is to obtain a watt-hour meter capable of controlling a load switch even when the control power supply is in the open phase state.
［課題を解決するための手段］ この考案に係る電力量計は、単相３線式の第１及び第
２の電源端子に接続しそれぞれの欠相を検出する停電欠
相検出回路と、前記第１の電源端子に接続し、電源側と
負荷側の間に接続されている負荷開閉器を開閉制御する
第１の負荷制御回路と、前記第２の電源端子に接続し、
前記負荷開閉器を開閉制御する第２の負荷制御回路と、
前記停電欠相検出回路の出力に基づいて、前記第２の電
源端子側が欠相の場合は前記第１の負荷制御回路を選択
し、前記第１の電源端子側が欠相の場合には前記第２の
負荷制御回路を選択するCPUとを備えたものである。[Means for Solving the Problems] A watt hour meter according to the present invention includes a power failure open phase detection circuit which is connected to first and second single-phase three-wire power supply terminals and detects the open phase of each of them. A first load control circuit connected to the first power supply terminal for controlling the opening and closing of a load switch connected between the power supply side and the load side, and connected to the second power supply terminal,
A second load control circuit for controlling the opening and closing of the load switch;
Based on the output of the power failure open phase detection circuit, the first load control circuit is selected when the second power supply terminal side is open phase, and the first load control circuit is selected when the first power supply terminal side is open phase. And a CPU for selecting the load control circuit of No. 2.
［作用］ この考案においては、単相３線式の第１及び第２の電
源端子に接続された停電欠相検出回路によって、それぞ
れの欠相が検出される。[Operation] In this invention, each phase loss is detected by the power failure phase loss detection circuit connected to the first and second power terminals of the single-phase three-wire system.
また、前記第１の電源端子に接続された第１の負荷制
御回路によって、電源側と負荷側の間に接続されている
負荷開閉器が開閉制御される。The first load control circuit connected to the first power supply terminal controls the opening and closing of the load switch connected between the power supply side and the load side.
また、前記第２の電源端子に接続された第２の負荷制
御回路によって、前記負荷開閉器が開閉制御される。Further, the second load control circuit connected to the second power supply terminal controls opening / closing of the load switch.
さらに、CPUによって、前記停電欠相検出回路の出力
に基づいて、前記第２の電源端子側が欠相の場合は前記
第１の負荷制御回路が選択され、前記第１の電源端子側
が欠相の場合には前記第２の負荷制御回路が選択され
る。Further, the CPU selects the first load control circuit based on the output of the power failure open phase detection circuit when the second power supply terminal side is open phase, and the first power supply terminal side is open phase. In this case, the second load control circuit is selected.
［実施例］ 実施例の構成を第１図、第２図及び第３図を参照しな
がら説明する。[Embodiment] The configuration of the embodiment will be described with reference to FIGS. 1, 2, and 3.
第１図は、この考案の一実施例を示すブロック図であ
り、電力量計量装置（１）〜磁気カード制御回路
（４）、操作スイッチ回路（６）〜負荷開閉器（10）は
上記従来機器のものと全く同一である。FIG. 1 is a block diagram showing an embodiment of the present invention, in which the electric energy metering device (1) -magnetic card control circuit (4), operation switch circuit (6) -load switch (10) are the same as those of the prior art. It is exactly the same as the device.
第１図において、この考案の一実施例は、上述した従
来機器のものと全く同一のものと、CPU（5A）と、入力
側が電源端子（1S）〜（3S）に接続されかつ出力側がCP
U（5A）に接続された停電欠相検出回路（11）と、CPU
（5A）及び負荷開閉器（10）に接続された（3S）側の負
荷制御回路（12）とから構成されている。In FIG. 1, an embodiment of the present invention is exactly the same as the conventional device described above, a CPU (5A), an input side is connected to power terminals (1S) to (3S), and an output side is a CP.
Power failure open phase detection circuit (11) connected to U (5A) and CPU
(5A) and a (3S) side load control circuit (12) connected to the load switch (10).
第２図及び第３図は、この考案の一実施例の負荷制御
回路（９）及び負荷制御回路（12）を示すブロック図で
ある。2 and 3 are block diagrams showing a load control circuit (9) and a load control circuit (12) according to an embodiment of the present invention.
第２図及び第３図において、負荷制御回路（９）は、
制御信号出力回路（91）と、この制御信号出力回路（9
1）に接続されたホトサイリスタ（92）とから構成さ
れ、負荷制御回路（12）は、制御信号出力回路（121）
と、この制御信号出力回路（121）に接続されたホトサ
イリスタ（122）とから構成されている。2 and 3, the load control circuit (9) is
The control signal output circuit (91) and this control signal output circuit (9
1) and a photothyristor (92) connected to the load control circuit (12) and a control signal output circuit (121).
And a photothyristor (122) connected to the control signal output circuit (121).
つぎに、上述した実施例の動作を説明する。 Next, the operation of the above-described embodiment will be described.
停電欠相検出回路（11）は、電源の（1S）側及び（3
S）側の状態を常に監視し、欠相状態を検出する。つま
り、それぞれ整流した電圧を監視する。その結果をCPU
（5A）に送る。The power failure open-phase detection circuit (11) is connected to the (1S) side of the power supply and (3
The state on the (S) side is constantly monitored and the open-phase state is detected. That is, the rectified voltage is monitored. The result is CPU
Send to (5A).
CPU（5A）は、停電欠相検出回路（11）からの監視結
果に基づいて、（3S）側が欠相の場合には（1S）側の負
荷制御回路（９）を選択し、（1S）側が欠相の場合には
（3S）側の負荷制御回路（12）を選択する。The CPU (5A) selects the load control circuit (9) on the (1S) side when the (3S) side is open phase based on the monitoring result from the power failure open phase detection circuit (11), and (1S) If the side is open-phase, select the (3S) side load control circuit (12).
例えば、負荷制御回路（12）は、CPU（5A）の指令に
基づいて、制御信号出力回路（121）によりON制御信号
又はOFF制御信号をホトサイリスタ（122）を介して負荷
開閉器（10）へ供給して、開閉制御を行う。なお、他の
動作は上述した従来機器と同一である。For example, the load control circuit (12) sends an ON control signal or an OFF control signal from the control signal output circuit (121) to the load switch (10) via the photothyristor (122) based on a command from the CPU (5A). To control the opening and closing. The other operations are the same as those of the conventional device described above.
この考案の一実施例は、停電欠相検出回路（11）、
（1S）側の負荷制御回路（９）及び（3S）側の負荷制御
回路（12）を備えたので、制御用電源の片側が欠相状態
であっても、もう片側の電源により負荷開閉器（10）を
開閉制御することができる効果を奏する。One embodiment of the present invention is a power failure open phase detection circuit (11),
Since the load control circuit (9) on the (1S) side and the load control circuit (12) on the (3S) side are provided, even if one side of the control power supply is in the open phase state, the load switch is operated by the power supply on the other side. (10) can be controlled to be opened and closed.
［考案の効果］ この考案は、以上説明したとおり、単相３線式の第１
及び第２の電源端子に接続しそれぞれの欠相を検出する
停電欠相検出回路と、前記第１の電源端子に接続し、電
源側と負荷側の間に接続されている負荷開閉器を開閉制
御する第１の負荷制御回路と、前記第２の電源端子に接
続し、前記負荷開閉器を開閉制御する第２の負荷制御回
路と、前記停電欠相検出回路の出力に基づいて、前記第
２の電源端子側が欠相の場合は前記第１の負荷制御回路
を選択し、前記第１の電源端子側が欠相の場合には前記
第２の負荷制御回路を選択するCPUとを備えたので、制
御用電源が欠相状態でも負荷開閉器を制御することがで
きるという効果を奏する。[Effect of the Invention] As described above, the present invention is based on the single-phase three-wire first type.
And a power failure open phase detection circuit which is connected to the second power supply terminal and detects each open phase, and a load switch which is connected to the first power supply terminal and is connected between the power supply side and the load side. A first load control circuit for controlling, a second load control circuit connected to the second power supply terminal for controlling the opening and closing of the load switch, and the power failure open phase detection circuit based on the output of the first load control circuit. The second load control circuit is selected when the second power supply terminal side is open phase, and the second load control circuit is selected when the first power supply terminal side is open phase. The effect that the load switch can be controlled even when the control power supply is in the open phase state is achieved.
【図面の簡単な説明】 第１図はこの考案の一実施例を示すブロック図、第２図
はこの考案の一実施例の（1S）側の負荷制御回路を示す
ブロック図、第３図はこの考案の一実施例の（3S）側の
負荷制御回路を示すブロック図、第４図は従来の電力量
計を示すブロック図である。 図において、 （１）…電力量計量装置、（２）…電源回路、（３）…
磁気カード、（４）…磁気カード制御回路、（5A）…CP
U、（６）…操作スイッチ回路、（７）…表示回路、
（８）…表示部、（９）…負荷制御回路、（10）…負荷
開閉器、（11）…停電欠相検出回路、（12）…負荷制御
回路である。 なお、各図中、同一符号は同一、又は相当部分を示す。BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a block diagram showing an embodiment of the present invention, FIG. 2 is a block diagram showing a (1S) side load control circuit of an embodiment of the present invention, and FIG. FIG. 4 is a block diagram showing a (3S) side load control circuit of an embodiment of the present invention, and FIG. 4 is a block diagram showing a conventional watt hour meter. In the figure, (1) ... electric energy measuring device, (2) ... power supply circuit, (3) ...
Magnetic card, (4) ... Magnetic card control circuit, (5A) ... CP
U, (6) ... Operation switch circuit, (7) ... Display circuit,
(8) ... Display unit, (9) ... Load control circuit, (10) ... Load switch, (11) ... Power failure open phase detection circuit, (12) ... Load control circuit. In the drawings, the same reference numerals indicate the same or corresponding parts.
フロントページの続き (72)考案者 小熊 修二郎 宮城県仙台市青葉区中山７丁目２番１号 東北電力株式会社電力技術研究所内 (56)参考文献 特開 昭63−138269（ＪＰ，Ａ) 特開 昭64−88163（ＪＰ，Ａ)Front page continuation (72) Inventor Shujiro Oguma 7-2-1, Nakayama, Aoba-ku, Sendai City, Miyagi Prefecture Tohoku Electric Power Co., Inc. Power Technology Research Laboratory (56) Reference Japanese Patent Laid-Open No. 63-138269 (JP, A) Kai 64-88163 (JP, A)
Claims (1)
続しそれぞれの欠相を検出する停電欠相検出回路、 前記第１の電源端子に接続し、電源側と負荷側の間に接
続されている負荷開閉器を開閉制御する第１の負荷制御
回路、 前記第２の電源端子に接続し、前記負荷開閉器を開閉制
御する第２の負荷制御回路、 並びに 前記停電欠相検出回路の出力に基づいて、前記第２の電
源端子側が欠相の場合は前記第１の負荷制御回路を選択
し、前記第１の電源端子側が欠相の場合には前記第２の
負荷制御回路を選択するCPU を備えたことを特徴とする電力量計。Claim: What is claimed is: 1. A power failure open phase detection circuit, which is connected to first and second power supply terminals of a single-phase 3-wire system and detects open phase of each, and which is connected to the first power supply terminal, and is connected to a power supply side and a load side. A first load control circuit for controlling the opening and closing of a load switch connected between the two, a second load control circuit connected to the second power supply terminal for controlling the opening and closing of the load switch, and the power failure Based on the output of the phase detection circuit, the first load control circuit is selected when the second power supply terminal side is open-phase, and the second load is selected when the first power supply terminal side is open-phase. An electric energy meter characterized by having a CPU for selecting a control circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1989100457U JPH084623Y2 (en) | 1989-08-30 | 1989-08-30 | Electricity meter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1989100457U JPH084623Y2 (en) | 1989-08-30 | 1989-08-30 | Electricity meter |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0340529U JPH0340529U (en) | 1991-04-18 |
| JPH084623Y2 true JPH084623Y2 (en) | 1996-02-07 |
Family
ID=31649464
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1989100457U Expired - Lifetime JPH084623Y2 (en) | 1989-08-30 | 1989-08-30 | Electricity meter |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH084623Y2 (en) |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63138269A (en) * | 1986-11-29 | 1988-06-10 | Rishiyou Kogyo Kk | Electric charge liquidating device using recording card |
| JPS6488163A (en) * | 1987-09-30 | 1989-04-03 | Mitsubishi Electric Corp | Electronic watthour meter device |
-
1989
- 1989-08-30 JP JP1989100457U patent/JPH084623Y2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0340529U (en) | 1991-04-18 |
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