JPH05290701A - Relay circuit - Google Patents
Relay circuitInfo
- Publication number
- JPH05290701A JPH05290701A JP8425892A JP8425892A JPH05290701A JP H05290701 A JPH05290701 A JP H05290701A JP 8425892 A JP8425892 A JP 8425892A JP 8425892 A JP8425892 A JP 8425892A JP H05290701 A JPH05290701 A JP H05290701A
- Authority
- JP
- Japan
- Prior art keywords
- relay
- turned
- heater
- failure
- relays
- 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
Landscapes
- Safety Devices In Control Systems (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、例えばヒータのオン／
オフ制御等に用いられるリレー回路に関するもので、特
に、現用系／バックアップ系で冗長構成を持つ回路に関
する。BACKGROUND OF THE INVENTION The present invention relates to, for example, turning on / off a heater.
The present invention relates to a relay circuit used for off control and the like, and particularly to a circuit having a redundant configuration in an active / backup system.
【０００２】[0002]
【従来の技術】一例のリレーについてオン状態とオフ状
態を図２（ａ）、（ｂ）に夫々を図示し定義する。2. Description of the Related Art An ON state and an OFF state of an example relay are shown in FIGS. 2A and 2B, respectively, and defined.
【０００３】一般に極めて高信頼性を要求される機器、
例えば人工衛星等においては１個の部品の故障による機
能の喪失を避けるため、図３に示す様に同一回路リレー
１（Ｒｅ−１）、リレー２（Ｒｅ−２）を２式用意しパ
ックアップ系を構成している。この場合、リレー１（Ｒ
ｅ−１）とリレー２（Ｒｅ−２）が互いにバックアップ
系となっており、リレー１（Ｒｅ−１）或はリレー２
（Ｒｅ−２）が故障してオン不能になった場合でも他系
での機能維持が可能であるように構成されている。Devices that are generally required to have extremely high reliability,
For example, in an artificial satellite or the like, two sets of the same circuit relay 1 (Re-1) and relay 2 (Re-2) are prepared and packed up in order to avoid loss of function due to failure of one component. It constitutes the system. In this case, relay 1 (R
e-1) and relay 2 (Re-2) are backup systems for each other, and relay 1 (Re-1) or relay 2
Even if (Re-2) fails and cannot be turned on, the function of the other system can be maintained.
【０００４】[0004]
【発明が解決しようとする課題】上記図３に示される従
来の回路構成では、リレー１（Ｒｅ−１）或はリレー２
（Ｒｅ−２）がオフ不能故障時に関してはバックアップ
機能を果たせない。特に、ヒータ制御回路等においては
ヒータ（Ｈ−１、Ｈ−２）をオフとすることが必須条件
となる場合も多く、リレーのオフ不能故障に対するバッ
クアップ系の構成が必要となる。In the conventional circuit configuration shown in FIG. 3, the relay 1 (Re-1) or the relay 2 is used.
When (Re-2) cannot be turned off, the backup function cannot be achieved. In particular, turning off the heaters (H-1, H-2) is often an indispensable condition in the heater control circuit and the like, and a backup system configuration for a failure in which the relay cannot be turned off is required.
【０００５】従来の方式では、図４に示す様に更に２個
のリレー、即ちリレー３（Ｒｅ−３）、リレー４（Ｒｅ
−４）を用いて、このバックアップ機能を実現してい
た。上記によると、リレー１（Ｒｅ−１）、リレー２
（Ｒｅ−２）、リレー３（Ｒｅ−３）、リレー４（Ｒｅ
−４）の内いずれかのリレーがオフ不能故障を生じた場
合でも、他のリレーにより確実にヒータ（Ｈ−１、Ｈ−
２）のオフ機能を維持出来る。但し、この場合、２個の
追加リレーが必要となり、人工衛星の様な重量・スペー
ス等に厳しい制約のある機器においては大きな欠点とな
る。In the conventional system, as shown in FIG. 4, two more relays, namely, a relay 3 (Re-3) and a relay 4 (Re
This backup function was realized by using -4). According to the above, relay 1 (Re-1), relay 2
(Re-2), relay 3 (Re-3), relay 4 (Re
Even if one of the relays in -4) fails to be turned off, the other relays ensure the heater (H-1, H-).
The off function of 2) can be maintained. However, in this case, two additional relays are required, which is a major drawback in a device such as an artificial satellite that is severely limited in weight and space.
【０００６】本発明は上記の欠点を除去すべくなされた
もので、追加リレーを必要とせず、リレーのオフ不能故
障に対してもバックアップ機能を果たし得る様にしたリ
レー回路を提供することを目的とする。The present invention has been made to eliminate the above-mentioned drawbacks, and an object of the present invention is to provide a relay circuit which does not require an additional relay and can perform a backup function even when the relay cannot be turned off. And
【０００７】[0007]
【課題を解決するための手段】本発明に係るリレー回路
は、複数対のオン・オフ接点を有する２個のリレーで構
成され、かつ上記リレーのうち一個のリレーのオン不
能、またはオフ不能に対するバックアップ機能を備えた
接点構成であることを特徴とする。A relay circuit according to the present invention comprises two relays having a plurality of pairs of on / off contacts, and for one of the relays, the relay cannot be turned on or off. It is characterized by having a contact structure with a backup function.
【０００８】[0008]
【作用】本発明は、一般に用いられる２接点以上の接点
を有するリレーの余剰接点を用い、その接点間の接続に
よりリレーのオフ不能故障を含むバックアップ系を構成
する。The present invention uses a surplus contact of a relay having two or more contacts that are generally used, and a connection between the contacts constitutes a backup system including a failure in which the relay cannot be turned off.
【０００９】[0009]
（実施例１）以下、本発明の一つの実施例を図面を参照
して説明する。(Embodiment 1) Hereinafter, one embodiment of the present invention will be described with reference to the drawings.
【００１０】図１（ａ）ないし図１（ｄ）に示すヒータ
（Ｈ−１）およびヒータ（Ｈ−２）は互いにバックアッ
プ系であり、そのいずれかが動作していればよいもので
ある。通常は図（ａ）に示す様に、リレー１（Ｒｅ−
１）をオン、リレー２（Ｒｅ−２）をオンとしておき、
ヒータ１（Ｈ−１）で保温を行なう。ヒータ１（Ｈ−
１）が断線（故障）した場合には図１（ｂ）に示す様
に、リレー１（Ｒｅ−１）をオフ、リレー２（Ｒｅ−
２）をオフすることによりヒータ２（Ｈ−２）で保温を
行なうことができる。The heater (H-1) and the heater (H-2) shown in FIGS. 1 (a) to 1 (d) are backup systems for each other, and it is sufficient that either one of them operates. Normally, as shown in Figure (a), relay 1 (Re-
1) is turned on and relay 2 (Re-2) is turned on,
Heat is maintained by the heater 1 (H-1). Heater 1 (H-
When 1) is broken (failed), as shown in FIG. 1B, the relay 1 (Re-1) is turned off and the relay 2 (Re-).
By turning off 2), the heater 2 (H-2) can keep warm.
【００１１】ここで、リレー１（Ｒｅ−１）およびリレ
ー２（Ｒｅ−２）の故障時の対応を述べる。リレー１
（Ｒｅ−１）またはリレー２（Ｒｅ−２）がオン不能故
障を生じた場合には、図１（ｂ）に示すようにリレー１
（Ｒｅ−１）、リレー２（Ｒｅ−２）を共にオフとする
ことによりヒータ２（Ｈ−２）をオンできる。Here, the measures taken when the relay 1 (Re-1) and the relay 2 (Re-2) fail will be described. Relay 1
When (Re-1) or the relay 2 (Re-2) has a failure that cannot be turned on, the relay 1 as shown in FIG.
The heater 2 (H-2) can be turned on by turning off both (Re-1) and the relay 2 (Re-2).
【００１２】一方、本発明の目的であるリレーのオフ不
能故障に対する対応として、リレー１（Ｒｅ−１）のオ
フ不能故障時には図１（ｃ）に示すように、リレー２
（Ｒｅ−２）をオフにすることによりヒータ１（Ｈ−
１）およびヒータ２（Ｈ−２）を共にオフにできる。ま
た、リレー２（Ｒｅ−２）のオフ不能故障時には図１
（ｄ）に示すように、リレー１（Ｒｅ−１）をオフにす
ることにより上記と同様にヒータ１（Ｈ−１）およびヒ
ータ２（Ｈ−２）を共にオフにできる。On the other hand, in order to deal with the failure to turn off the relay which is the object of the present invention, when the failure to turn off the relay 1 (Re-1) fails, as shown in FIG.
By turning off (Re-2), the heater 1 (H-
Both 1) and heater 2 (H-2) can be turned off. In addition, when the relay 2 (Re-2) cannot be turned off, a failure occurs as shown in FIG.
As shown in (d), by turning off the relay 1 (Re-1), both the heater 1 (H-1) and the heater 2 (H-2) can be turned off as described above.
【００１３】[0013]
【発明の効果】以上述べた様に、本発明によれば、リレ
ーのオン不能故障時での対応は従来回路と同一の機能を
持ち、更にリレーのオフ不能故障時にも追加のリレーを
要せずに確実に負荷をオフすることが出来るリレー回路
を提供出来る。As described above, according to the present invention, when a failure in which the relay cannot be turned on has the same function as the conventional circuit, an additional relay is required even when the failure in which the relay cannot be turned off. It is possible to provide a relay circuit that can surely turn off the load without doing so.
【図１】（ａ）〜（ｄ）は本発明の一実施例の回路例を
示すいずれも回路図。FIG. 1A is a circuit diagram showing an example of a circuit according to an embodiment of the present invention.
【図２】（ａ）はオン状態、（ｂ）はオフ状態を定義す
るためのいずれも回路図。FIG. 2A is a circuit diagram for defining an ON state and FIG. 2B is an OFF state.
【図３】従来の回路図。FIG. 3 is a conventional circuit diagram.
【図４】従来の回路図。FIG. 4 is a conventional circuit diagram.
【符号の説明】 Ｒｅ−１ リレー１ Ｒｅ−２ リレー２ Ｒｅ−３ リレー３ Ｒｅ−４ リレー４ Ｈ−１ ヒータ１ Ｈ−２ ヒータ２[Explanation of Codes] Re-1 Relay 1 Re-2 Relay 2 Re-3 Relay 3 Re-4 Relay 4 H-1 Heater 1 H-2 Heater 2
Claims (1)
リレーで構成され、かつ上記リレーのうち一個のリレー
のオン不能、またはオフ不能に対するバックアップ機能
を備えた接点構成になるリレー回路。1. A relay circuit which is composed of two relays having a plurality of pairs of on / off contacts, and has a contact function with a backup function for preventing one of the relays from being turned on or off.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8425892A JPH05290701A (en) | 1992-04-07 | 1992-04-07 | Relay circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8425892A JPH05290701A (en) | 1992-04-07 | 1992-04-07 | Relay circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH05290701A true JPH05290701A (en) | 1993-11-05 |
Family
ID=13825432
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP8425892A Pending JPH05290701A (en) | 1992-04-07 | 1992-04-07 | Relay circuit |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH05290701A (en) |
-
1992
- 1992-04-07 JP JP8425892A patent/JPH05290701A/en active Pending
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