CN101895098B - Protecting-two-of-three redundancy monitoring circuit - Google Patents
Protecting-two-of-three redundancy monitoring circuit Download PDFInfo
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- CN101895098B CN101895098B CN201010239016A CN201010239016A CN101895098B CN 101895098 B CN101895098 B CN 101895098B CN 201010239016 A CN201010239016 A CN 201010239016A CN 201010239016 A CN201010239016 A CN 201010239016A CN 101895098 B CN101895098 B CN 101895098B
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Abstract
The invention provides a protecting-two-of-three redundancy monitoring circuit, which is used for monitoring working states of three working units. The three working units are provided with three relays, each relay is provided with two state contact switches which are connected with the state contact switches of the other two relays in series and then connected between two wire outlet ends of the monitoring circuit in parallel; each of the three working units is provided with a detection module which is connected with the corresponding relay and used for detecting whether the corresponding working unit normally works; if the working unit normally works, the detection module controls the two contact switches of the corresponding relay to be closed at the same time; if the working unit abnormally works, the detection module controls the two contact switches of the corresponding relay to be opened at the same time; and whether the three working units meet the requirements of normal working can be easily judged by monitoring the current between the two wire outlet ends. The monitoring circuit has the advantages of easy wiring and reliable working.
Description
Technical field
The present invention relates to a kind of redundancy monitoring circuit, relate in particular to a kind of protecting-two-of-three redundancy monitoring circuit.
Background technology
Direct-current transmission converter valve is with three Optical Transmit Units are set in the valve base electronic device cabinet, in order to reach enough energy, requires minimumly in three Optical Transmit Units to want two Optical Transmit Units to work simultaneously.Protecting-two-of-three redundancy monitoring circuit is used for the Optical Transmit Unit of protecting-two-of-three redundancy design in the valve base electronic device cabinet is monitored, and is most important to the reliability service of DC transmission system.
Common three protect two designs monitoring use special-purpose monitoring means mostly, monitoring means is inner adopt logic determines accomplish three protect two designs monitoring function, complex circuit, to the having relatively high expectations of monitoring means inside makes troubles for the design of control protection system.
Summary of the invention
The purpose of this invention is to provide a kind of protecting-two-of-three redundancy monitoring circuit, its wiring is simple, reliable operation.
To achieve these goals, the present invention adopts following technical scheme:
A kind of protecting-two-of-three redundancy monitoring circuit; Be used to monitor the operating state of three working cells; Said three working cells comprise first working cell, second working cell and the 3rd working cell; Said first working cell is provided with detects the whether first detection module of operate as normal of first working cell; Said second working cell is provided with detects whether second detection module of operate as normal of second working cell, and said the 3rd working cell is provided with detects whether the 3rd detection module of operate as normal of the 3rd working cell; Said protecting-two-of-three redundancy monitoring circuit comprises first relay, second relay and the 3rd relay that is connected with first detecting unit, second detecting unit and the 3rd detecting unit respectively, and said protecting-two-of-three redundancy monitoring circuit has two leading-out terminals; First relay comprises the first state contact switch and the second state contact switch, and second relay comprises third state contact switch and four condition contact switch, and the 3rd relay comprises the 5th state contact switch and the 6th state contact switch; The first state contact switch and the series connection of third state contact switch; The second state contact switch and the series connection of the 5th state contact switch; Four condition contact switch and the series connection of the 6th state contact switch are parallel to after six state contact switchs are connected in a manner described between two leading-out terminals of observation circuit.
Said working cell is an Optical Transmit Unit.
State the current detection module that observation circuit also comprises electric current between two leading-out terminals of a monitoring.
Compared with prior art; Protecting-two-of-three redundancy monitoring circuit of the present invention is through being provided with three relays on three Optical Transmit Units; Respectively be provided with two state contact switchs on each relay, two state contact switchs on each relay respectively with other two relays on the state contact switch be parallel between two leading-out terminals of observation circuit after connecting; Respectively be provided with a detection module that connects corresponding relay on three Optical Transmit Units, whether detection module is used to detect corresponding Optical Transmit Unit work normal; Optical Transmit Unit is in proper working order, and two state contact switchs that detection module is controlled corresponding relay are closed simultaneously; The Optical Transmit Unit operation irregularity, two state contact switchs of the relay that detection module control is corresponding are opened simultaneously; Just can be easy to judge the demand whether three Optical Transmit Units can satisfy operate as normal through monitoring two electric currents between the leading-out terminal, this observation circuit wiring is simple, reliable operation.
Description of drawings
Fig. 1 is the structural representation of protecting-two-of-three redundancy monitoring circuit of the present invention;
Wherein: U1 is first Optical Transmit Unit; U2 second Optical Transmit Unit; U3 the 3rd Optical Transmit Unit; J1 is a first detection module; J2 is second detection module; J3 is the 3rd detection module; S1 is first relay; S2 is second relay; S3 is the 3rd relay; S11 is the first state contact switch; S12 is the second state contact switch; S21 is a third state contact switch; S22 is the 4th contact switch; S31 is the 5th state contact switch; S32 is the 6th state contact switch.
Embodiment
Below in conjunction with accompanying drawing the present invention is done and to describe in further detail.
See also shown in Figure 1ly, three Optical Transmit Units are set in the valve base electronic device cabinet, be respectively the first Optical Transmit Unit U1, the second Optical Transmit Unit U2 and the 3rd Optical Transmit Unit U3.U1, U2 and U3 go up correspondence and are provided with first detection module J1, the second detection module J2 and the 3rd detection module J3, and whether be used to detect corresponding Optical Transmit Unit in proper working order.
Protecting-two-of-three redundancy monitoring circuit of the present invention comprises three the first relay S1, the second relay S2 and the 3rd relay S3 that are located at respectively on three Optical Transmit Unit U1, U2 and the U3; The first relay S1 is provided with the first state contact switch S11 and the second state contact switch S12; The second relay S2 is provided with third state contact switch S21 and the 4th contact switch S22, and the 3rd relay S3 is provided with the 5th state contact switch S31 and the 6th state contact switch S32.Detection module on each Optical Transmit Unit connects the relay on each Optical Transmit Unit, and it is in proper working order that detection module detects Optical Transmit Unit, and two state contact switchs controlling corresponding relay are closed simultaneously; Detection module detects the Optical Transmit Unit operation irregularity, controls two state contact switchs of corresponding relay and opens simultaneously.
Among the present invention, S11 connects with S21, and S12 connects with S31, and S22 connects with S32 to form three tunnel series arms, and the contact switch of these three groups series connection is parallel between the leading-out terminal A of testing circuit, the B to form three road parallel circuitss.Whole when in proper working order as U1, U2 and U3, the whole conductings of three road parallel circuitss form a current paths between A, the B; When among U1, U2 and the U3 any one breaks down; Detection module on the Optical Transmit Unit of this fault is controlled two state contact switchs of corresponding relay and is all opened; Two-way in the circuit of three tunnel parallel connections breaks off, and can also form a current paths between A, the B; Contact switch corresponding on this Optical Transmit Unit is opened when breaking down or all breaking down when any two among U1, U2 and the U3, and the circuit of three tunnel parallel connections all break off, and open circuit between A, the B, do not have electric current to pass through.
When protecting-two-of-three redundancy monitoring circuit of the present invention is used, give between the leading-out terminal AB and apply certain voltage, whether monitoring has electric current to pass through, if there is electric current to pass through, explain in three Optical Transmit Units the rarest two in proper working order, can satisfy job requirement; If do not have electric current through the rarest two operation irregularities in three light trigger elements are described, can not satisfy job requirement.This protecting-two-of-three redundancy monitoring circuit can also connect a current detection module; This current detection module detects the current situation between AB in real time; There is not electric current to pass through if open circuit between AB; The rarest two operation irregularities in three light trigger elements are described, can not be satisfied job requirement, current detection module sends alarm signal or sends signal and makes the tripping operation of valve base electronic device cabinet.
Claims (3)
1. protecting-two-of-three redundancy monitoring circuit; Be used to monitor the operating state of three working cells; Said three working cells comprise first working cell (U1), second working cell (U2) and the 3rd working cell (U3); It is characterized in that: said first working cell (U1) is provided with detects the whether first detection module (J1) of operate as normal of first working cell (U1); Said second working cell (U2) is provided with detects whether second detection module (J2) of operate as normal of second working cell (U2), and said the 3rd working cell (U3) is provided with detects whether the 3rd detection module (J3) of operate as normal of the 3rd working cell (U3);
Said protecting-two-of-three redundancy monitoring circuit comprises first relay (S1), second relay (S2) and the 3rd relay (S3) that is connected with first detecting unit (J1), second detecting unit (J2) and the 3rd detecting unit (J3) respectively, and said protecting-two-of-three redundancy monitoring circuit has two leading-out terminals;
First relay (S1) comprises the first state contact switch (S11) and the second state contact switch (S12); Second relay (S2) comprises third state contact switch (S21) and four condition contact switch (S22), and the 3rd relay (S3) comprises the 5th state contact switch (S31) and the 6th state contact switch (S32);
The first state contact switch (S11) and third state contact switch (S21) series connection; The second state contact switch (S12) and the series connection of the 5th state contact switch (S31); Four condition contact switch (S22) and the series connection of the 6th state contact switch (S32), six state contact switchs (S11, S12, S21, S22, S31, S32) are parallel between two leading-out terminals of observation circuit after connecting in a manner described.
2. protecting-two-of-three redundancy monitoring circuit according to claim 1, it is characterized in that: said working cell is an Optical Transmit Unit.
3. protecting-two-of-three redundancy monitoring circuit according to claim 1, it is characterized in that: said observation circuit also comprises the current detection module of electric current between two leading-out terminals of a monitoring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010239016A CN101895098B (en) | 2010-07-28 | 2010-07-28 | Protecting-two-of-three redundancy monitoring circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010239016A CN101895098B (en) | 2010-07-28 | 2010-07-28 | Protecting-two-of-three redundancy monitoring circuit |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101895098A CN101895098A (en) | 2010-11-24 |
| CN101895098B true CN101895098B (en) | 2012-10-10 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201010239016A Active CN101895098B (en) | 2010-07-28 | 2010-07-28 | Protecting-two-of-three redundancy monitoring circuit |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104849527A (en) * | 2015-03-13 | 2015-08-19 | 沈阳中科博微自动化技术有限公司 | Function-safety-oriented redundant current input module |
| CN109031034A (en) * | 2017-06-09 | 2018-12-18 | 许继集团有限公司 | A kind of circuitry fault detection method and system |
| CN110824351B (en) * | 2019-11-20 | 2022-05-13 | 天津津航计算技术研究所 | Fault detection circuit and method for relay redundancy |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2626962Y (en) * | 2003-07-03 | 2004-07-21 | 南京润尔洪鑫科技有限公司 | Elevator door switch detecting apparatus |
| CN2779417Y (en) * | 2005-02-02 | 2006-05-10 | 范连岗 | Contact fault detector for AC contactor |
| CN101097229A (en) * | 2006-06-30 | 2008-01-02 | 佛山市顺德区顺达电脑厂有限公司 | Detecting device |
-
2010
- 2010-07-28 CN CN201010239016A patent/CN101895098B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2626962Y (en) * | 2003-07-03 | 2004-07-21 | 南京润尔洪鑫科技有限公司 | Elevator door switch detecting apparatus |
| CN2779417Y (en) * | 2005-02-02 | 2006-05-10 | 范连岗 | Contact fault detector for AC contactor |
| CN101097229A (en) * | 2006-06-30 | 2008-01-02 | 佛山市顺德区顺达电脑厂有限公司 | Detecting device |
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| CN101895098A (en) | 2010-11-24 |
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