JPS5955501A - Load controller - Google Patents
Load controllerInfo
- Publication number
- JPS5955501A JPS5955501A JP16690782A JP16690782A JPS5955501A JP S5955501 A JPS5955501 A JP S5955501A JP 16690782 A JP16690782 A JP 16690782A JP 16690782 A JP16690782 A JP 16690782A JP S5955501 A JPS5955501 A JP S5955501A
- Authority
- JP
- Japan
- Prior art keywords
- power supply
- load
- voltage
- control
- control element
- 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.)
- Pending
Links
Classifications
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B9/00—Safety arrangements
- G05B9/02—Safety arrangements electric
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Automation & Control Theory (AREA)
- Safety Devices In Control Systems (AREA)
Abstract
Description
【発明の詳細な説明】
産業上の利用分野
本発明は、商用電源を電源とし、一連のシーケンス動作
を行う、ＩＣ等を使用した制御装置を有する、例えば自
動洗濯機等の負荷制御装置に関するものである。DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a load control device for, for example, an automatic washing machine, which uses a commercial power source as a power source and has a control device using an IC or the like to perform a series of sequential operations. It is.
従来例の構成とその問題点
従来この種制御装置を有する負荷制御装置は、商用電源
の電圧が一時低下した場合においても、負荷を制御する
制御素子の、駆動を行なっていた。Conventional Structure and Problems Conventionally, a load control device having this type of control device drives a control element for controlling a load even when the voltage of a commercial power supply temporarily drops.
しかし、この様な構成は、負荷の種類によっては非常に
危険である。例えば、交流ソレノイドにおいては、電源
電圧が低下することにより、ソレノイドよシなる負荷を
吸引することができず、その期間が長びけばソレノイド
は異常に発熱し、火災を生じる危険さえあった。However, such a configuration can be very dangerous depending on the type of load. For example, in an AC solenoid, due to a drop in power supply voltage, the solenoid is unable to attract a load, and if this period is prolonged, the solenoid may generate abnormal heat and even pose a risk of fire.
又、この種制御装置は、負荷の制御素子、例えば、双方
向性三端子制御整流素子を駆動する為の直流電源を備え
ており、この直流電源の電圧が一定レベル以下になると
、制御装置はその動作が保証されない。通常の機器は商
用電源で駆動されるが、この商用電源は、しばしば５０
ｍ Ｓｅｃ〜１００ｍ、 ｓｅｃ Ｎ度の瞬時停電が生
じている。In addition, this type of control device is equipped with a DC power supply for driving a load control element, such as a bidirectional three-terminal control rectifier, and when the voltage of this DC power supply falls below a certain level, the control device Its operation is not guaranteed. Normal equipment is powered by commercial power, and this commercial power is often
A momentary power outage of 100 m sec to 100 m sec N degrees has occurred.
この瞬時停電が発生した時、一般の負荷制御装置は、直
流電源の電圧が低下する為、制御ｊ回路の一連の７−ケ
ンス動作を続けることが困Ｉｆ（となり、商用電源が復
帰しても元の動作を続けることか出来ない等の不都合が
あり、これに対する対策としては電源の容量アップ等が
あるが、コストの面で不利である。When this instantaneous power outage occurs, it is difficult for general load control devices to continue the series of 7-step operations of the control circuit because the voltage of the DC power supply drops (If), even if the commercial power is restored. There are disadvantages such as the inability to continue the original operation, and countermeasures to this problem include increasing the capacity of the power supply, but this is disadvantageous in terms of cost.
発明の目的
本発明は上記した従来一般の負荷制御装置の３や力量照
点を解決し、商用電源の電圧停下や、瞬時停電等がおこ
った場合に、安定した動作を行う、信頼性の高い負荷制
御装置を提供することを目的とする。Purpose of the Invention The present invention solves the above-mentioned problem 3 and the ability point of the conventional general load control device, and provides a reliable system that performs stable operation in the event of a voltage drop in the commercial power supply or a momentary power outage. The purpose is to provide a high load control device.
発明の構成
そして、上記目的を達成するために本発明は、負荷を制
御する制御素子と、商用電源を直流化することで得だ前
記制御素子を１駆動する為の直流電源と、前記直流電源
もしくは、この直流電源にもとづき得られる他の直流電
源で駆動され、前記負荷の一連のンーケンス制御を行う
為に前記制御素子を制御する制御装置と、前記商用電源
の停電もしくは著しい電圧低下を検知する検知装置とを
備え、前記検知装置の検知動作にもとづき、前記制御素
子の駆動を禁止するように構成したことにより、商用電
源の停電時あるいは著しい電圧低下時に制御素子の駆動
をすみやかに禁止するものである。Structure of the Invention In order to achieve the above object, the present invention provides a control element for controlling a load, a DC power supply for driving the control element by converting a commercial power supply into a DC power supply, and a DC power supply for driving the control element. Alternatively, a control device that is driven by another DC power source obtained based on this DC power source and controls the control element to perform a series of sequence control of the load, and a control device that detects a power outage or a significant voltage drop in the commercial power source. and a detection device, and is configured to prohibit driving of the control element based on the detection operation of the detection device, so that driving of the control element is promptly prohibited in the event of a power outage or significant voltage drop of the commercial power supply. It is.
実施例の説明
以下、本発明の負荷制御装置の一実施例を添イ・］図面
に基づいて説明する。第１図において、１は非安定化直
流電源で、商用電源２を直流化することで得られる。３
は非安定化直流電源１にもとづきさらに安定化して設け
られた直流安定化電源であり、制御回路４に供給されて
いる。この制御回路４は例えばマイクロコンピュータ等
で構成される。６は負荷で、制御素子Ｉ６により制御さ
れ、その駆動用電源は非安定化直流電源１より供給され
る。制御素子Ｉ６の制御は制御回路４の信号に基き制御
素子■７により行なわれる。８に電圧比較回路で、基準
値９と非安定化直流電源１の電圧とを比較し、非安定化
直流電源１の電圧が゛二定レベル′°以下になると、制
御回路４に信号を送り、この信号を受けて、制御回路４
は、制御素子■７を介して制御素子１１の駆動を停止し
、負荷５の１駆動を停止する。DESCRIPTION OF EMBODIMENTS An embodiment of the load control device of the present invention will be described below with reference to the accompanying drawings. In FIG. 1, reference numeral 1 denotes an unregulated DC power supply, which is obtained by converting a commercial power supply 2 to DC. 3
is a stabilized DC power supply that is further stabilized based on the unregulated DC power supply 1, and is supplied to the control circuit 4. This control circuit 4 is composed of, for example, a microcomputer. Reference numeral 6 denotes a load, which is controlled by a control element I6, and its driving power is supplied from the unregulated DC power supply 1. The control element I6 is controlled by the control element 7 based on the signal from the control circuit 4. 8, a voltage comparator circuit compares the reference value 9 with the voltage of the unregulated DC power supply 1, and when the voltage of the unregulated DC power supply 1 falls below the ``second level'', a signal is sent to the control circuit 4. , upon receiving this signal, the control circuit 4
Then, the drive of the control element 11 is stopped via the control element 7, and the drive of the load 5 is stopped.
前述しだ°′一定レベし″を負荷５の動作保証最低電圧
に合わぜておけば、商用電源が何らかの原因てその電圧
が低下してもその動作保証電圧内で、駆動を停止するの
で危険は生じない。As mentioned above, if you set the constant level to the minimum guaranteed operation voltage of the load 5, even if the voltage of the commercial power supply drops for some reason, the drive will stop within the guaranteed operation voltage, which is dangerous. does not occur.
さらには、商用電源２が瞬時停電により電源断になって
も、非安定化直流電源１が゛一定レしル″′に低下した
ところで制御素子１６がＯＦＦするので、制御素子１６
−−の電圧の供給がなくなり、非安定化直流電源１の低
下曲線が、第２図Ｙａ曲線のようになる。そして、ｂ点
、つ寸り直流安定化電源３の電圧を保証する非安定化直
流電源１の最低電圧せでの降下時間ｔａが、本発明を実
施していない一般のものの低下曲線、つまり、Ｃ曲線で
のｔｃ よシもへｔ伸びることになり、瞬時停電に対
する耐量が増すことになる。このとき、ｄ点ｄ、負荷駆
動停止レベルを示す。なお、第２図の縦軸は電圧を、横
軸は電源断時からの時間をそれぞれ示す。Furthermore, even if the commercial power supply 2 is cut off due to a momentary power outage, the control element 16 is turned off when the unregulated DC power supply 1 drops to a ``certain level''.
-- is no longer supplied, and the drop curve of the unregulated DC power supply 1 becomes like the Ya curve in FIG. 2. Then, at point b, the drop time ta at the lowest voltage of the non-stabilized DC power supply 1 that guarantees the voltage of the regulated DC power supply 3 is the drop curve of a general one that does not implement the present invention, that is, tc in the C curve will be extended further, increasing the ability to withstand instantaneous power outages. At this time, point d indicates the load drive stop level. Note that the vertical axis in FIG. 2 represents the voltage, and the horizontal axis represents the time since the power was cut off.
次に第３図にもとづき、制御ｉ１１回路４にマイクロコ
ノピユータを使用した場合の具体例を示す。第３図にお
いて、第１図に示すブロックに対応する部分は、同じ番
号を付している。Next, based on FIG. 3, a specific example will be shown in which a microcomputer is used for the control i11 circuit 4. In FIG. 3, parts corresponding to the blocks shown in FIG. 1 are given the same numbers.
１０は電のトランスで、１次側は商用電源２に接続され
ておシ、２次イト１］はダイオード１１とコノデンザ１
２で整流平滑され非安定化直流電源１を構成している。10 is an electric transformer, the primary side is connected to the commercial power supply 2, and the secondary side is a diode 11 and a condenser 1.
2, the unregulated DC power supply 1 is rectified and smoothed.
又、この非安定化直流電源１に接続してトランジスタ１
３、抵抗１４、ツェナーダイオード１５よりなる直流安
定化電源３が構成しである。１６は負荷６である交流電
磁石で、制御素子Ｉ６である双方向性三端子制御整流素
子１７と商用電源２に直列接続しである。１８は制御回
路４を構成するマイクロコンピュータで、一連の７−ケ
ンス動作を行うものであり、直流安定化電源３より電圧
の供給をうけている。又、１９は制御素子１１７を構成
するトランジスタで、マイクロコンピュータ１８により
制御され、双方向性三端子制御整流素子１アを抵抗２ｏ
を介して制御する。Also, transistor 1 is connected to this unregulated DC power supply 1.
3, a resistor 14, and a zener diode 15. Reference numeral 16 denotes an AC electromagnet as the load 6, which is connected in series to the commercial power supply 2 and a bidirectional three-terminal control rectifier element 17 as the control element I6. Reference numeral 18 denotes a microcomputer constituting the control circuit 4, which performs a series of 7-step operations, and is supplied with voltage from the DC stabilized power supply 3. Further, 19 is a transistor constituting the control element 117, which is controlled by the microcomputer 18 and connects the bidirectional three-terminal control rectifying element 1a to the resistor 2o.
Control via.
ここで、非安定化直流電源１ば、双方向性三端子制御整
流素子１７の陰極に接続されている。Here, the unregulated DC power supply 1 is connected to the cathode of the bidirectional three-terminal controlled rectifier 17 .
２１は電圧比較器で、入力の一方は基準値９として直流
安定化電源３に接続されている。又、入力のｆ［し方に
は、非安定化直流電源１の電圧を抵抗２２．２３によっ
て分割することて倒られる分割電圧が供給される。前記
分割電圧が直流安定化電６４７３より低くなると、電圧
比較器２１の出力が反転し７、その信号がマイクロコン
ピュータ１８に入り、その信号をうけて、トランジスタ
１９の駆動停ｔｌ−１即ち、双方向性三端子制御整流素
子１７の駆動イノ、・市を行う。２４は抵抗である。21 is a voltage comparator, one of the inputs of which is connected to the DC stabilized power supply 3 as a reference value 9; Furthermore, a divided voltage is supplied to the input f by dividing the voltage of the unregulated DC power supply 1 by the resistors 22 and 23. When the divided voltage becomes lower than the DC stabilizing voltage 6473, the output of the voltage comparator 21 is inverted 7, and the signal enters the microcomputer 18. Upon receiving the signal, the drive of the transistor 19 is stopped tl-1, that is, both The driving process of the directional three-terminal control rectifying element 17 is performed. 24 is a resistance.
上記構成において、一連のンーケンス動作を行っている
ときに、商用電源２か何らかの原因で電圧低下し、負荷
５である交流電磁石１６の動作保証電圧以下になっても
、商用電源２の電圧とほぼ退隠して動く非安定化直流電
源１の電圧を電圧比較器２１により監視しているので、
ただちにマイクロコンピュータ１８に信号か入り、双方
向性三端子制御整流素子１７を駆動停止にし、負荷５で
ある交流電磁石１６への通電を止め危険を防止する。In the above configuration, even if the voltage of the commercial power supply 2 drops due to some reason during a series of sequence operations and becomes below the guaranteed operating voltage of the AC electromagnet 16, which is the load 5, the voltage is almost equal to that of the commercial power supply 2. Since the voltage of the unregulated DC power supply 1 that moves in a hidden manner is monitored by the voltage comparator 21,
Immediately, a signal is sent to the microcomputer 18 to stop driving the bidirectional three-terminal control rectifying element 17 and stop energizing the AC electromagnet 16, which is the load 5, to prevent danger.
又、負荷１駆動がなくなるので、非安定化直流電源１及
び直流安定化電源３の消費か少なくなり、第２図に示す
様に、瞬時停電に対する耐量か増し安定した動作が得ら
れる。Further, since the load 1 is no longer driven, the consumption of the unregulated DC power supply 1 and the DC stabilized power supply 3 is reduced, and as shown in FIG. 2, the ability to withstand instantaneous power outages is increased and stable operation is obtained.
負荷５の、駆動停止をする際、本実施例では、電圧比較
回路８の出力を制御回路４に入れているか電圧比較回路
８の出力により、直接ｆｆｒｌｌ Ｉｆ￥（ｌ素子Ｉ＋
７であるトランジスタ１９の制御を禁市しても、同様
の効果が得られる。When stopping the drive of the load 5, in this embodiment, the output of the voltage comparator circuit 8 is input to the control circuit 4, or the output of the voltage comparator circuit 8 is used to directly input ffrll If\(l element I+
A similar effect can be obtained even if the control of transistor 19, which is transistor 7, is prohibited.
第４図は本発明の他の実施例を示し、第３図と対応する
ＲＬ（分は同じ番号を利している。図において、２５は
電源ｌ・ランス１０の２次（１’ｔｌｌ出力を全波整流
する為の整流器、２６はトランジスタ２７と抵抗２８，
２９．３０により構成される電源同期パルス発生器であ
る。FIG. 4 shows another embodiment of the present invention, in which the RL (minutes have the same numbers as in FIG. 3). In the figure, 25 is the secondary (1'tll output A rectifier for full-wave rectification, 26 is a transistor 27 and a resistor 28,
29.30 is a power synchronization pulse generator.
上記構成において、停電していない場合は、第４図のイ
２２ロ、ハ各点の電圧波形は第５図（イ）。In the above configuration, if there is no power outage, the voltage waveforms at points A22B and C in FIG. 4 are as shown in FIG. 5(A).
（ロ）、（ハ）の様になり、トランジスタ２７のコレク
タには第６図（ハ）で示−すように電源周波数に同期し
／こパルスが発生ずる。(b) and (c), and a pulse is generated at the collector of the transistor 27 in synchronization with the power supply frequency as shown in FIG. 6(c).
今、停電が発生ずれば、第４図の４５口、・・の各点の
電圧波形（ｄ１１００の（イ）、（ロ）＋Ｈの様になる
。この第６図では、８点で停電か発生し、５点で停電が
解除されている。そして、第６図より明らかな様に、停
電か発生すれＣ」２、トランジスタ２７のコレクタに発
生していた電蝕同期パルスか発生しなくなる。この電源
同期パルスの異′１嘱、例えは、パルス幅の異常等を制
御回路４て判定することにより、容易に停電を検知する
ことか可能であり、かつ非停電時には電蝕同期信号を制
御回路の時間測定に使用できる等のメリットかある。If a power outage were to occur now, the voltage waveforms at points 45, etc. in Figure 4 would look like (a), (b) + H of d1100. In this figure, there is a power outage at 8 points. Then, as is clear from FIG. 6, as soon as the power outage occurs, the electrolytic synchronizing pulse that had been generated at the collector of the transistor 27 no longer occurs. It is possible to easily detect a power outage by determining an abnormality in this power synchronization pulse, such as an abnormality in pulse width, using the control circuit 4, and control the electrolytic erosion synchronization signal in the event of a non-power outage. It has the advantage that it can be used to measure circuit time.
発明の効果
以」−のように本発明によれは、商用電源の停電あるい
は倒らかの原因による著しい電圧低下で負荷の動作保ａ
＋Ｅ電圧以下になる等、危険な状態にな−）だ場合、そ
の負荷の駆動を停止することにより、安全に負荷の１駆
動を行うことか可能であり、丑た、ＩＣ等を使用し、一
連のシーケンス制御を行うものにおいて、電源電圧か低
下することにより、そのシーケンス制御が保証されない
回路等においては、■イ時停電に対する耐量を増した安
全でかつ信頼ｔａｇの高い負荷制御装置を提供すること
ができる。According to the present invention, the operation of the load can be maintained even if there is a significant voltage drop due to a power outage or failure of the commercial power supply.
If the voltage is below +E or in a dangerous situation (-), it is possible to safely drive the load by stopping the drive of that load. In circuits that perform a series of sequence control, and where the sequence control cannot be guaranteed due to a drop in the power supply voltage, we provide a safe and highly reliable load control device that has increased resistance to sudden power outages. be able to.
第１図は本発明の一実施例における負荷制御装置を示す
電気的ブロック図、第２図は停電発生時の直流電源電圧
の低下曲線を示す図、第３図は具体的な電気回路図、第
４図は他の実施例における電気回路図、第６図（イ）、
（ロ）、（ハ）は非停電時の第４図イ２ロ、ハ部分の電
圧波形図、第６図（イ）、 （Ｏ） 。
り・）は停電時の同各部分の電圧波形図である。
１ ・・非安定化直流電源、２・・・商用電源、３・・
・直流安定化電源、４・・・・・制御回路、５・・・
負荷、６，７ ・・制＃１１素子１，０．８・用電圧比
較回路、９・・・基準値。
代理人の氏名 弁理士 中 尾 敏 男 ほか１名第５
１、ンｌ
＋
第６図
α ｂ
（ＬｂFIG. 1 is an electrical block diagram showing a load control device according to an embodiment of the present invention, FIG. 2 is a diagram showing a drop curve of DC power supply voltage when a power outage occurs, and FIG. 3 is a specific electrical circuit diagram. Fig. 4 is an electric circuit diagram in another embodiment, Fig. 6 (a),
(B) and (C) are voltage waveform diagrams of parts A2B and C of Fig. 4 during non-power outage, and Fig. 6 (A) and (O). Figures 1 and 2) are voltage waveform diagrams of the same parts during a power outage. 1... Unregulated DC power supply, 2... Commercial power supply, 3...
・DC stabilized power supply, 4...control circuit, 5...
Load, 6, 7... Voltage comparison circuit for #11 element 1, 0.8, 9... Reference value. Name of agent: Patent attorney Toshio Nakao and 1 other person No. 5
1, nl + Figure 6 α b (Lb
Claims (3)
ることで得だ前記制御素子を駆動する為の直流電源と、
前記直流電源もしくは、この直流電源にもとづき得られ
る他の直流電源で駆動され、前記負荷の一連のシーケン
ス制御を行う為に前記制御素子を制御する制御装置と、
前記商用電源の停電もしくは著しい電圧低下を検知する
検知装置とを備え、前記検知装置の検知動作にも々づき
、前記制御素子の駆動を禁止するように構成した負荷制
御装置。(1) A DC power supply for driving the control element, which is advantageous by converting the commercial power supply to DC for the control element that controls the load;
a control device that is driven by the DC power source or another DC power source obtained based on the DC power source and controls the control element to perform a series of sequence controls of the load;
A load control device comprising a detection device for detecting a power outage or a significant voltage drop in the commercial power source, and configured to prohibit driving of the control element based on a detection operation of the detection device.
電圧を所定の基準電圧と比較する為の電圧比較装置と前
記基準電圧の発生装置とよりなる特８′「請求の範囲第
１項記載の負荷制御装置。(2) The detection device comprises a voltage comparison device for comparing the voltage of the DC power supply for driving the control element with a predetermined reference voltage, and a generator for the reference voltage. The load control device described in Section 1.
るパルス発生装置を具備し、前記同期パルスの有無、も
しくは、パルス幅を検知することにより、停電検知を行
う特許請求の範囲第１項記載の負荷制御装置。(3) Claim 1, wherein the detection device includes a pulse generator that generates pulses synchronized with a commercial power supply, and detects a power outage by detecting the presence or absence of the synchronized pulse or the pulse width. The load control device described.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16690782A JPS5955501A (en) | 1982-09-25 | 1982-09-25 | Load controller |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16690782A JPS5955501A (en) | 1982-09-25 | 1982-09-25 | Load controller |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5955501A true JPS5955501A (en) | 1984-03-30 |
Family
ID=15839846
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP16690782A Pending JPS5955501A (en) | 1982-09-25 | 1982-09-25 | Load controller |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5955501A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009207558A (en) * | 2008-02-29 | 2009-09-17 | Fujinon Corp | Flexible tube of endoscope |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5595102A (en) * | 1979-01-12 | 1980-07-19 | Matsushita Electric Ind Co Ltd | Detection circuit for power failure of controller |
-
1982
- 1982-09-25 JP JP16690782A patent/JPS5955501A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5595102A (en) * | 1979-01-12 | 1980-07-19 | Matsushita Electric Ind Co Ltd | Detection circuit for power failure of controller |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009207558A (en) * | 2008-02-29 | 2009-09-17 | Fujinon Corp | Flexible tube of endoscope |
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