JPH0444704B2

JPH0444704B2 -

Info

Publication number: JPH0444704B2
Application number: JP57230248A
Authority: JP
Inventors: Goji Honda; Yukio Asano; Mitsuru Kaneko
Original assignee: Matsushita Electric Industrial Co Ltd
Current assignee: Panasonic Holdings Corp
Priority date: 1982-12-29
Filing date: 1982-12-29
Publication date: 1992-07-22
Also published as: JPS59122962A

Description

【発明の詳細な説明】（産業上の利用分野）この発明は、通電時に停電が発生し、その再通
電時に、電源入切スイツチがどのような状態で再
通電されたかを判断する装置に関する。DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a device that determines in what state a power on/off switch is energized when a power outage occurs during energization and when the power is reenergized.

（従来の技術）例えば、風呂釜や、ストーブ、フアンヒータ等
の暖房器は、運転を行なつている際は、リモコン
や器具本体に設けられた表示部に運転状態を表示
したり、あるいは炎が直接見える構造になつてお
り、逆に、運転を行なつていないときは、表示部
の表示を行なわず、あるいは炎が消えていること
が目視できるようになつている。(Prior art) For example, when a heater such as a bathtub, stove, fan heater, etc. is in operation, the operating status is displayed on the remote control or a display provided on the appliance body, or the flame is displayed. The structure is such that it can be seen directly, and conversely, when the flame is not in operation, the display section does not display any information or the flame is extinguished so that it can be visually observed.

このような器具を運転中に停電が発生し、しか
も使用者がその器具のある場所から長時間離れる
場合は、器具を停止の状態にしてその場所を離れ
るが、器具の停止の判断は、自分が（又は他人
が）器具を停止させたかどうか、また、入切スイ
ツチが切状態になつているかどうかを直接見て、
判断するのが一般的である。 If a power outage occurs while operating such equipment, and the user leaves the area where the equipment is located for a long time, the user should leave the equipment in a stopped state and leave the area, but the decision to stop the equipment is the sole responsibility of the user. Directly check whether the person (or someone else) has stopped the appliance and whether the on/off switch is turned off.
It is common to judge.

しかし、運転状態の表示や炎の有無を判断の対
象としていた従来では、停電の際は電源の供給が
停止されることから表示部は表示を行なわず、ま
た炎も消える。従つて、入切スイツチが入状態で
あるにもかかわらず、切状態、即ち停止状態にし
たと誤判断してしまう場合もある。 However, in the past, where the display of the operating state and the presence or absence of a flame were the subject of judgment, in the event of a power outage, the power supply is stopped, so the display section does not display any information and the flame also goes out. Therefore, even though the on/off switch is in the on state, it may be mistakenly determined that the switch is in the off state, that is, in the stopped state.

そこで、このような誤判断のもとで停電が再復
帰した場合、停電再通電の判断機能を持たない従
来の器具では、電源が再復帰すれば入切スイツチ
を介して電源が各回路に供給され、再度運転状態
となる。使用者がいないにもかかわらず、風呂釜
や暖房器が運転を再開すれば、風呂の空炊きや火
災の危険性が生じ、あるいは誤判断を行なつた使
用者にとれば、器具が勝手に運転を再開したこと
による不信感等、安全性の上から極めて重大な問
題があつた。 Therefore, if the power outage returns due to such a misjudgment, with conventional equipment that does not have a function to determine whether the power should be reenergized after the power outage, power will be supplied to each circuit via the on/off switch once the power is restored. and returns to operating state. If the bathtub or heater resumes operation even when no one is using it, there is a risk of the bath not being fully heated or a fire, or if the user makes a misjudgment, the appliances may start operating on their own. There were extremely serious problems from a safety standpoint, such as a sense of distrust due to the resumption of operation.

（発明が解決しようとする課題）本考案は、このような問題点を解決しようとす
るものであり、停電後再通電時の状態を判断し、
その判断結果に基づいて風呂釜や暖房器等の器具
を再起動させ、あるいは不動作の状態を維持する
ように制御することにより、器具の誤動作を防
ぎ、かつ安全性を確保するようにした停電再通電
判断装置を提供することを目的とする。(Problems to be Solved by the Invention) The present invention attempts to solve such problems by determining the state at the time of re-energization after a power outage,
Based on the judgment results, appliances such as bathtubs and space heaters are controlled to restart or remain inactive, thereby preventing appliance malfunctions and ensuring safety. The purpose of the present invention is to provide a reenergization determination device.

（課題を解決するための手段）上記目的を達成するために、本考案の停電再通
電判断装置は、直流を外部回路へ供給する入切ス
イツチと外部回路との間に挿入され、再通電時
に、入切スイツチが停電再復帰後に人為的に入れ
られたものか、停電時も入りのまま再通電になつ
たものかに応じて充電過渡状態が異なる充電コン
デンサと、この充電コンデンサの充電過渡状態に
応じてオン又はオフとなりそのオン・オフ状態を
示す信号を外部回路へ伝達する伝達トランジスタ
と、伝達トランジスタのオン・オフ状態を持続さ
せる自己保持トランジスタとを備え、伝達トラン
ジスタの信号により、外部回路の動作、不動作を
制御する構成としたものである。(Means for Solving the Problems) In order to achieve the above object, the power failure reenergization determination device of the present invention is inserted between an on/off switch that supplies direct current to an external circuit and an external circuit, and when reenergized, , a charging capacitor whose charging transient state differs depending on whether the on/off switch was turned on artificially after a power outage resumed, or whether it was turned on again after a power outage, and the charging transient state of this charging capacitor. It is equipped with a transmission transistor that turns on or off depending on the current state and transmits a signal indicating the on/off state to an external circuit, and a self-holding transistor that maintains the on/off state of the transmission transistor. The structure is such that the operation and non-operation of the controller are controlled.

（作用）まず、再通電時に、入切スイツチが停電再復帰
後に人為的に入れられたものである場合は、入切
スイツチ投入と同時に十分高電位になつた直流電
圧が充電コンデンサに印加され、その時、伝達ト
ランジスタをオンにするに足る過渡電流が流れ
る。一方、自己保持トランジスタの作用により、
伝達トランジスタのオン状態が持続され、そのオ
ン状態を示す信号が外部回路へ供給される。その
信号を受けた外部回路は、入切スイツチが停電再
復帰後に人為的に入れられたものであると認識
し、動作を開始する。(Function) First, when the power is reenergized, if the on/off switch was turned on artificially after the power was restored, a sufficiently high DC voltage is applied to the charging capacitor at the same time as the on/off switch is turned on. At that time, a transient current flows that is sufficient to turn on the transfer transistor. On the other hand, due to the action of the self-holding transistor,
The on state of the transfer transistor is maintained, and a signal indicating the on state is supplied to an external circuit. The external circuit that receives this signal recognizes that the on/off switch was turned on artificially after the power was restored, and starts operating.

入切スイツチが停電時も入りのまま再通電にな
つた場合は、停電再復帰と共に徐々に立ち上がる
直流電圧が充電コンデンサに印加され、その時
は、伝達トランジスタをオンにするに足る過渡的
な電流が流れない。従つて、伝達トランジスタは
オフ状態を示す信号を外部回路へ供給する。外部
回路は、入切スイツチが停電時も入りのまま再通
電になつたものであると認識し、不動作を維持す
る。 If the on/off switch remains on during a power outage and is turned on again, a DC voltage that gradually rises when the power outage resumes is applied to the charging capacitor, and at that time, a transient current sufficient to turn on the transfer transistor is generated. Not flowing. Therefore, the transfer transistor supplies a signal indicating the off state to the external circuit. The external circuit recognizes that the on/off switch remains on during a power outage and is turned on again, and remains inactive.

（実施例）以下、図面を参照して実施例を詳細に説明す
る。第１図は、本発明の一実施例を示したもの
で、１は商用電源であり、２はその電圧を降圧す
る電源トランス、３は降圧した交流を整流する整
流器、４は整流した脈流を平滑化する平滑コンデ
ンサ、５は平滑化した直流を外部回路１４へ供給
する入切スイツチである。(Example) Hereinafter, an example will be described in detail with reference to the drawings. FIG. 1 shows an embodiment of the present invention, in which 1 is a commercial power source, 2 is a power transformer that steps down the voltage, 3 is a rectifier that rectifies the stepped-down alternating current, and 4 is a rectified pulsating current. 5 is an on/off switch that supplies the smoothed DC to the external circuit 14.

６は停電再通電判断装置であり、入切スイツチ
５と外部回路１４との間に挿入される。停電再通
電判断装置６は、入切スイツチ５が停電再復帰後
に人為的に入れられたものか、停電時も入りのま
ま再通電になつたものかに応じて異なつた充電過
渡状態を示す充電コンデンサ７と、この充電コン
デンサ７の充電過渡状態に応じてオン又はオフと
なる伝達トランジスタ１３と、この伝達トランジ
スタのオン・オフ状態を持続させる自己保持トラ
ンジスタ１２と、抵抗８〜１１とから構成されて
おり、前記伝達トランジスタのオン・オフ状態を
示す信号を外部回路１４へ伝達する。 Reference numeral 6 denotes a power failure re-energization determination device, which is inserted between the on/off switch 5 and the external circuit 14. The power outage reenergization determination device 6 determines whether the on/off switch 5 is turned on artificially after the power outage resumed or whether the power is reenergized while remaining on during the power outage. It consists of a capacitor 7, a transfer transistor 13 that turns on or off depending on the charging transient state of the charging capacitor 7, a self-holding transistor 12 that maintains the on/off state of the transfer transistor, and resistors 8 to 11. and transmits a signal indicating the on/off state of the transmission transistor to the external circuit 14.

次に、本実施例の動作を説明する。まず、入切
スイツチ５が停電再復帰後に人為的に入れられた
場合について説明する。入切スイツチ５を入れる
ときは、平滑コンデンサ４の両端ａ，ｂ間にはす
でに所定の直流電圧が生じている。そこで、入切
スイツチ５を入れると、ｃ−ｂ間には第２図Ａに
示すような急激な電圧変化が生じ、抵抗８を通つ
て、充電コンデンサ７に一瞬過渡的な、伝達トラ
ンジスタ１３をオン状態にするに足る電流が流れ
る。伝達トランジスタ１３がオンになれば、抵抗
９，１０により自己保持トランジスタ１２がオン
となり、自己保持トランジスタ１２、抵抗１１、
抵抗８の経路で電流が流れ、以降は、充電コンデ
ンサ７における電荷の変化による過渡電流に関係
なく、伝達トランジスタ１３のオン状態が持続さ
れ、伝達トランジスタ１３のオン状態を示す信号
（Loレベル）が外部回路１４に供給される。 Next, the operation of this embodiment will be explained. First, a case where the on/off switch 5 is manually turned on after the power is restored will be described. When the on/off switch 5 is turned on, a predetermined DC voltage is already generated between both ends a and b of the smoothing capacitor 4. Therefore, when the on/off switch 5 is turned on, a sudden voltage change occurs between c and b as shown in FIG. Sufficient current flows to turn it on. When the transfer transistor 13 is turned on, the self-holding transistor 12 is turned on by the resistors 9 and 10, and the self-holding transistor 12, the resistor 11,
A current flows through the path of the resistor 8, and thereafter, regardless of the transient current caused by the change in charge in the charging capacitor 7, the on state of the transfer transistor 13 is maintained, and the signal (Lo level) indicating the on state of the transfer transistor 13 is maintained. The signal is supplied to the external circuit 14.

Loレベルの信号を受けた外部回路の制御部１
５は、入切スイツチ５が停電再復帰後に人為的に
入れられたものと認識し、予め定められたシーケ
ンスに従つて、送風フアン駆動回路１６、点火器
駆動回路１７、電磁弁駆動回路１８に動作信号を
出力し、フアン１９、点火器２０、電磁弁２１を
それぞれ動作状態とする。 Control unit 1 of the external circuit that receives the Lo level signal
5 recognizes that the on/off switch 5 was turned on artificially after the power is restored, and turns on the blower fan drive circuit 16, igniter drive circuit 17, and solenoid valve drive circuit 18 according to a predetermined sequence. An operating signal is output to put the fan 19, igniter 20, and solenoid valve 21 into operating states.

次に、入切スイツチ５が停電時も入りのまま再
通電になつた場合は、停電復帰と共にＣ−ｂ間の
電圧は、第２図Ｂに示すように、徐々に立ち上が
る。そのため、充電コンデンサ７には、伝達トラ
ンジスタ１３をオン状態にするに足る過渡的な電
流が流れず、従つて、伝達トランジスタ１３はオ
フの状態を維持し、そのオフ状態を示す信号
（Hiレベル）を外部回路１４へ供給する。 Next, when the on/off switch 5 remains on during the power outage and is turned on again, the voltage between C and b gradually rises as the power outage returns, as shown in FIG. 2B. Therefore, a transient current sufficient to turn on the transfer transistor 13 does not flow through the charging capacitor 7, and therefore, the transfer transistor 13 remains off, and a signal indicating the off state (Hi level) is generated. is supplied to the external circuit 14.

Hiレベルの信号を受けた外部回路の制御部１
５は、入切スイツチ５が停電時も入りのまま再通
電になつたものと認識し、動作信号を全く出力し
ない。その結果、外部回路１４は停止状態を維持
することになる。 Control unit 1 of external circuit that receives Hi level signal
5 recognizes that the on/off switch 5 remains on even during a power outage and is re-energized, and does not output any operation signal. As a result, the external circuit 14 remains in a stopped state.

（発明の効果）以上説明したように、本発明によれば、停電後
の再通電時に、入切スイツチが停電再復帰後に人
為的に入れられたものか、停電時も入りのまま再
通電になつたものかを判断し、入切スイツチを人
為的に入れたものと判断した場合は、外部回路を
動作させ、また、停電時も入りのまま再通電にな
つたものと判断したときは、外部回路の再起動を
防止して、安全性を確保することができるという
効果を奏するものである。(Effects of the Invention) As explained above, according to the present invention, when the power is re-energized after a power outage, whether the on/off switch is turned on artificially after the power is restored, or if the switch remains on during the power outage, the power is not re-energized. If it is determined that the on/off switch was turned on artificially, the external circuit will be activated, and if it is determined that the switch was left on during a power outage and turned on again, This has the effect of preventing restart of the external circuit and ensuring safety.

[Brief explanation of drawings]

第１図は、本発明の一実施例の回路図、第２図
は、Ａ入切スイツチが停電再復帰後に人為的に入
れられた場合と、Ｂ停電時も入りのまま再通電に
なつた場合における、第１図のｃ−ｂ間電圧変化
を、経過時間に対して示す図である。１……商用電源、２……電源トランス、３……
整流器、４……平滑コンデンサ、５……入切スイ
ツチ、６……停電再通電判断装置、７……充電コ
ンデンサ、１２……自己保持トランジスタ、１３
……伝達トランジスタ、１４……外部回路。 Fig. 1 is a circuit diagram of an embodiment of the present invention, and Fig. 2 shows a case where the A on/off switch was turned on artificially after the power was restored, and a case where the switch B remained on during the power outage and turned on again. FIG. 2 is a diagram showing the voltage change between c and b in FIG. 1 with respect to elapsed time in the case of FIG. 1...Commercial power supply, 2...Power transformer, 3...
Rectifier, 4... Smoothing capacitor, 5... On/off switch, 6... Power failure re-energization determination device, 7... Charging capacitor, 12... Self-holding transistor, 13
...Transmission transistor, 14...External circuit.

Claims

[Claims] 1. A power transformer 2 that steps down the commercial power supply voltage;
In a circuit comprising a rectifier 3 that rectifies the voltage-stepped alternating current, a smoothing capacitor 4 that smoothes the rectified pulsating current, and an on/off switch 5 that supplies the smoothed direct current to an external circuit 14, the on/off switch 5 and the external circuit 14, and when the power is turned on, a power outage occurs, and when the power is re-energized, the on/off switch is turned off at the time of the power outage and then turned on artificially after the power outage is restored, or the The power outage reenergization determination device 6 determines whether the power has been reenergized while the power remains on, and the power outage reenergization determination device 6 is configured to detect whether the on/off switch has been artificially turned on after the power is restored when the power is reenergized. The charging capacitor 7 has a charging transient state that differs depending on whether the charging capacitor 7 remains on during a power outage and is reenergized. a transmission transistor 13 that transmits a signal shown to an external circuit;
and a self-holding transistor 12 that maintains the on/off state of the transfer transistor, and controls the operation and non-operation of an external circuit based on the signal of the transfer transistor.