JPH0445947B2 - - Google Patents
Info
- Publication number
- JPH0445947B2 JPH0445947B2 JP31138086A JP31138086A JPH0445947B2 JP H0445947 B2 JPH0445947 B2 JP H0445947B2 JP 31138086 A JP31138086 A JP 31138086A JP 31138086 A JP31138086 A JP 31138086A JP H0445947 B2 JPH0445947 B2 JP H0445947B2
- Authority
- JP
- Japan
- Prior art keywords
- relay
- transistor
- capacitor
- relay coil
- time
- 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
Links
- 239000003990 capacitor Substances 0.000 claims description 12
- 230000007274 generation of a signal involved in cell-cell signaling Effects 0.000 claims description 4
- 238000010411 cooking Methods 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000000470 constituent Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
Landscapes
- Control Of Resistance Heating (AREA)
- Baking, Grill, Roasting (AREA)
- Relay Circuits (AREA)
Description
【発明の詳細な説明】
産業上の利用分野
本発明は、一般家庭にて使用するホツトプレー
トなどの電気調理器の負荷の通電制御を行うリレ
ーの駆動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 relay drive device that controls the energization of a load in an electric cooking device such as a hot plate used in a general household.
従来の技術
従来のリレー駆動装置は第３図に示すように抵
抗１、ダイオード２、コンデンサー３の直列回路
を電源に接続し、コンデンサー３の両端にトラン
ジスタ５とリレーコイル４の直列回路を接続し、
トランジスタ５な温度制御回路６の出力を印加
し、温度検出素子７の値にてトランジスタ５をオ
ンオフし、リレーコイル４を駆動していた。この
リレーコイル４は接点８をオンオフしてヒータ９
に通電制御し、温度を一定に保持する動作を行う
ものである。Conventional Technology As shown in Fig. 3, a conventional relay drive device connects a series circuit of a resistor 1, a diode 2, and a capacitor 3 to a power source, and connects a series circuit of a transistor 5 and a relay coil 4 to both ends of the capacitor 3. ,
The output of the temperature control circuit 6 of the transistor 5 was applied, the transistor 5 was turned on and off based on the value of the temperature detection element 7, and the relay coil 4 was driven. This relay coil 4 turns on and off the contact 8 to turn on and off the heater 9.
It controls the current flow to maintain a constant temperature.
ところで、コンデンサー３の電圧は、第４図に
示すように、リレー駆動信号が出力される前は、
リレー感動電圧vpoより高く充電されており、リ
レーが駆動されるとリレー保持電圧vhよりやや高
いところ（vc′）に安定するように、抵抗１が設
定されている。このため、リレーコイルに消費す
る電力が低くおさえられ、自己発熱が小となるも
のであつた。 By the way, as shown in Fig. 4, the voltage of the capacitor 3 is as follows before the relay drive signal is output.
The resistor 1 is set so that it is charged higher than the relay sensing voltage v po and stabilizes at a level (v c ′) slightly higher than the relay holding voltage v h when the relay is driven. Therefore, the power consumed by the relay coil was kept low, and self-heating was reduced.
発明が解決しようとする問題点
しかしながら、この構成では、リレーコイル４
を駆動中に瞬時停電等が発生し、vc′がデイツプ
して保持電圧vh以下に低下し、リレー接点８が開
離した場合には、vc′はリレー感動電圧より低い
ため、リレー駆動信号によりトランジスタ５がオ
ンであつてもリレー接点８が再投入されないとい
う問題点があつた。Problems to be Solved by the Invention However, in this configuration, the relay coil 4
If an instantaneous power outage occurs while driving the relay, and v c ′ dips and drops below the holding voltage v h , and the relay contact 8 opens, the relay There was a problem in that even if the transistor 5 was turned on by the drive signal, the relay contact 8 was not re-closed.
従つて、使用中に突然リレーがオフし、再通電
しないということが起こる可能性があつた。この
場合、調理不能となるという問題点を有してい
た。 Therefore, there was a possibility that the relay would suddenly turn off during use and would not be energized again. In this case, there was a problem that cooking became impossible.
本発明は上記問題点に鑑み、瞬時停電圧があつ
てもリレーを確実に動作させることを目的とす
る。 SUMMARY OF THE INVENTION In view of the above problems, it is an object of the present invention to operate a relay reliably even when there is a momentary power outage.
問題を解決するための手段
前記問題点を解決するために本発明は、抵抗と
ダイオードとコンデンサーの直列回路を電源に接
続し、コンデンサーの両端にリレーコイルとスイ
ツチング素子の直列回路を接続したリレー駆動回
路と、計時手段の出力により一定時間ごとに前記
スイツチング素子をオフしてリレーコイルの駆動
を一定時間停止するようにした駆動信号発生回路
とを備えたものである。Means for Solving the Problems In order to solve the above problems, the present invention provides a relay drive in which a series circuit of a resistor, a diode, and a capacitor is connected to a power source, and a series circuit of a relay coil and a switching element is connected to both ends of the capacitor. and a drive signal generating circuit configured to turn off the switching element at fixed time intervals based on the output of a timer and stop driving the relay coil for a fixed time.
作 用
前記構成により、リレー電源がデイツプして接
点が開離した場合でも、一定時間ごとにリレーコ
イルの駆動を一定時間停止するため、この間に、
リレー電源電圧は、リレー感動電圧vpo以上に充
電され、一定時間停止した後の再駆動により接点
が再投入されることとなる。Effect With the above configuration, even if the relay power supply dips and the contacts open, the drive of the relay coil is stopped for a certain period of time at certain intervals, so during this period,
The relay power supply voltage is charged to a level higher than the relay voltage vpo , and the contact is re-energized by re-driving after stopping for a certain period of time.
実施例
本発明のリレー駆動装置の一実施例を第１図に
示す。第１図において、抵抗１、ダイオード２、
コンデンサー３の直列回路は電源に接続されてお
り、これらによりリレー電源を構成する。コンデ
ンサー３の両端にはスイツチング素子であるトラ
ンジスタ５とリレーコイル４の直列回路が接続さ
れている。温度制御器６は温度検出素子７の値に
もとづいてトランジスタ５をオンオフして温度制
御を行う。このトランジスタ５がオンすればリレ
ーコイル４に通電され、ヒータ９の接点をオンし
て通電を行うものである。Embodiment An embodiment of the relay driving device of the present invention is shown in FIG. In Figure 1, a resistor 1, a diode 2,
The series circuit of capacitor 3 is connected to a power supply, and together constitutes a relay power supply. A series circuit of a transistor 5, which is a switching element, and a relay coil 4 is connected to both ends of the capacitor 3. The temperature controller 6 controls the temperature by turning on and off the transistor 5 based on the value of the temperature detection element 7. When this transistor 5 is turned on, the relay coil 4 is energized, and the contact of the heater 9 is turned on to energize it.
計時手段１０の信号にもとづいて、一定時間停
止信号を発生する駆動信号発生回路１１はトラン
ジスタ５に接続されている。１３，１４は逆起電
力吸収用のツエナダイオードである。 A drive signal generation circuit 11 that generates a stop signal for a certain period of time based on a signal from the timer 10 is connected to the transistor 5. 13 and 14 are Zener diodes for absorbing back electromotive force.
以上の構成にて、計時手段１０により一定時間
ごとに、駆動信号発生回路により一定時間の停止
信号をトランジスタ５に印加する。この停止信号
は温度制御器６からのリレー駆動信号よりも優先
し、この停止信号が出力されると必ずトランジス
タ５はオフする。 With the above configuration, the drive signal generating circuit applies a stop signal for a fixed period of time to the transistor 5 at fixed time intervals by the clock means 10. This stop signal has priority over the relay drive signal from the temperature controller 6, and when this stop signal is output, the transistor 5 is always turned off.
第２図は、本発明の構成要素である計時手段及
び駆動信号発生回路をマイクロコンピユーターに
より構成した場合のフローチヤートの一例を示
す。第２図のフローチヤートにおいて、まず、第
１ステツプにて、温度Ｔを設定温度T1と比較す
る。Ｔ＜T1であれば、ステツプ２にてトランジ
スタのオン信号を発生し、Ｔ＞T1であれば、ス
テツプ2′にてトランジスタのオフ信号を発生す
る。 FIG. 2 shows an example of a flowchart in the case where the clocking means and drive signal generation circuit, which are the constituent elements of the present invention, are configured by a microcomputer. In the flowchart of FIG. 2, first, in the first step, the temperature T is compared with the set temperature T1 . If T< T1 , a transistor on signal is generated in step 2, and if T> T1 , a transistor off signal is generated in step 2'.
次に、ステツプ３にて、計時手段の時間ｔを基
準時間t0（この例では、４分に設定）と比較する。
ｔt0であれば、トランジスタの１秒間のオフ信
号をステツプ４にて発生し、ステツプ５にてタイ
マーをクリアして、ステツプ１にかえる。 Next, in step 3, the time t of the timer is compared with a reference time t 0 (set to 4 minutes in this example).
If tt 0 , a one-second off signal for the transistor is generated in step 4, the timer is cleared in step 5, and the process returns to step 1.
ｔ＜t0であれば、タイマを＋1secとしてステツ
プ１へもどる。 If t< t0 , set the timer to +1 sec and return to step 1.
以上のようにして、本実施例では、４分ごとに
１秒間のトランジスタの強制オフを行うことがで
き、このオフ期間にコンデンサーに充電され、両
端電圧がリレー感動電圧vpoより高い値まで昇圧
され、リレーコイルを解実に動作させ接点を閉成
状態に確実に復帰できる。 As described above, in this embodiment, it is possible to forcibly turn off the transistor for 1 second every 4 minutes, and during this off period, the capacitor is charged and the voltage at both ends is increased to a value higher than the relay voltage v po . The relay coil can be operated easily and the contacts can be reliably returned to the closed state.
発明の効果
以上述べた如く本発明のリレー駆動装置によ
り、リレー電源が、瞬時停電等によりデイツプし
た場合でも、一定時間毎に必ずコンデンサーに充
電する期間を設けているため、一定時間後には復
帰することとなり、確実なリレー動作を行うこと
ができる。Effects of the Invention As described above, with the relay drive device of the present invention, even if the relay power supply dips due to a momentary power outage, etc., the capacitor is always charged at a certain period of time, so it will be restored after a certain period of time. Therefore, reliable relay operation can be performed.
第１図は本発明の一実施例を示すリレー駆動装
置のブロツク図、第２図は同フローチヤート、第
３図は従来例を示すリレー駆動装置のブロツク
図、第４図は同動作電圧と時間関係を示すグラフ
である。
１……抵抗、２……ダイオード、３……コンデ
ンサー、４……リレーコイル、５……トランジス
タ、１０……計時装置、１１……駆動信号発生回
路。
Fig. 1 is a block diagram of a relay driving device showing an embodiment of the present invention, Fig. 2 is a flowchart of the same, Fig. 3 is a block diagram of a relay driving device showing a conventional example, and Fig. 4 shows the same operating voltage and voltage. It is a graph showing a time relationship. 1... Resistor, 2... Diode, 3... Capacitor, 4... Relay coil, 5... Transistor, 10... Timing device, 11... Drive signal generation circuit.
Claims (1)
を電源に接続し、コンデンサーの両端にリレーコ
イルおよびスイツチング素子の直列回路を接続し
たリレー駆動回路と、時計手段の出力により一定
時間ごとに前記スイツチング素子をリレーコイル
の駆動を一定時間停止する駆動信号発生回路とか
らなるリレー駆動装置。1. A relay drive circuit in which a series circuit of a resistor, a diode, and a capacitor is connected to a power source, and a series circuit of a relay coil and a switching element is connected to both ends of the capacitor, and the switching element is connected to the relay coil at regular intervals by the output of a clock means. A relay drive device consisting of a drive signal generation circuit that stops driving for a certain period of time.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61311380A JPS63164185A (en) | 1986-12-25 | 1986-12-25 | Relay drive device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61311380A JPS63164185A (en) | 1986-12-25 | 1986-12-25 | Relay drive device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS63164185A JPS63164185A (en) | 1988-07-07 |
| JPH0445947B2 true JPH0445947B2 (en) | 1992-07-28 |
Family
ID=18016479
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP61311380A Granted JPS63164185A (en) | 1986-12-25 | 1986-12-25 | Relay drive device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS63164185A (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02128204A (en) * | 1988-11-09 | 1990-05-16 | Matsushita Electric Ind Co Ltd | temperature control device |
-
1986
- 1986-12-25 JP JP61311380A patent/JPS63164185A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS63164185A (en) | 1988-07-07 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EXPY | Cancellation because of completion of term |