CN105549448B - A kind of shutoff signal control circuit - Google Patents
A kind of shutoff signal control circuit Download PDFInfo
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- CN105549448B CN105549448B CN201410589342.1A CN201410589342A CN105549448B CN 105549448 B CN105549448 B CN 105549448B CN 201410589342 A CN201410589342 A CN 201410589342A CN 105549448 B CN105549448 B CN 105549448B
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- shutoff signal
- cut
- signal
- switch
- shutoff
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Abstract
The invention belongs to signal control circuit technical fields, are related to a kind of shutoff signal control circuit comprising computer (1), chief aviation pilot's cut-out switch (2), copilot's cut-out switch (3).Wherein, chief aviation pilot's cut-out switch (2), which is Double-linkage with copilot's cut-out switch (3) and does not press to be in often, above closes lower open state, shutoff signal (A) is composed in parallel by the normally open end of two switches, shutoff signal (B) is composed in series by the normal-closed end of two switches, and computer (1) determines whether shutoff signal according to shutoff signal (A) and the combined situation of shutoff signal (B) two paths of signals.Failure and the possibility obscured of pressing are reduced to 25% by the present invention, and when either switch failure or after do not press or press, press another switch can also 100% completion signal cut function, reliability height has application in our hospital's auto-throttle shutoff signal control circuit.
Description
Technical field
The invention belongs to signal control circuit technical fields, are related to a kind of shutoff signal control circuit.
Background technology
Airworthiness requirement, driver and copilot must be with the abilities of independent trip signal.In order to enable two cut-out switches
Realize same function, traditional design singly sets cut-out switch by two and connects, by Flight Management Computer according to the logical of signal all the way
It powers off to determine whether shutoff signal.The failure of this conventional method and the possibility that pressing is obscured are very high (50%), and when any
Singly set switch fault or pressing after, press another switch can not 100% complete function, so as to cause whole system occur therefore
Barrier, system reliability are very low.Therefore there is an urgent need to carry out adaptive improvement to it.
Invention content
The purpose of the present invention is：A kind of shutoff signal control circuit that reliability is high is provided.
The technical scheme is that：A kind of shutoff signal control circuit comprising Flight Management Computer 1, cut-out letter
Number A, shutoff signal B, chief aviation pilot's cut-out switch 2, copilot's cut-out switch 3.Wherein, chief aviation pilot's cut-out switch 2 and pair
Driver's cut-out switch 3, which is Double-linkage and does not press to be in often, above closes lower open state, and shutoff signal A is normally opened by two switches
End composes in parallel, and shutoff signal B is composed in series by the normal-closed end of two switches, and Flight Management Computer 1 is according to shutoff signal A and cuts
The combined situation of break signal B two paths of signals determines whether shutoff signal：When chief aviation pilot's cut-out switch 2 and copilot are cut off
When switch 3 is not pressed, computer 1 maintains signal；
When pressing chief aviation pilot's cut-out switch 2 or copilot's cut-out switch 3 or two press simultaneously, computer 1
Cut-off signal.
The present invention has the advantage that effect：Shutoff signal control circuit of the present invention is according to shutoff signal A and shutoff signal B two
The combined situation of road signal determines whether shutoff signal, and the possibility that failure is obscured with pressing is reduced to 25%, and when any
Switch fault or after not pressing or pressing, pressing another switch 100% can also complete signal cut function, substantially increase system
Reliability, have larger actual application value, be applied in the control circuit of our hospital's auto-throttle shutoff signal.
Description of the drawings
Fig. 1 is shutoff signal control circuit schematic diagram of the present invention,
Fig. 2 is that control logic summarizes,
Fig. 3 is fail-safe analysis result.
Wherein：Computer 1；Shutoff signal A；Shutoff signal B；Chief aviation pilot's cut-out switch 2；Copilot's cut-out switch 3.
Specific implementation mode
With reference to specific attached drawing and subordinate list, the invention will be further described.
Referring to Fig. 1, it is shutoff signal control circuit schematic diagram of the present invention.Shutoff signal control circuit of the present invention includes
It Flight Management Computer 1, shutoff signal A, shutoff signal B, chief aviation pilot's cut-out switch 2, copilot's cut-out switch 3 and connects
Ground.Wherein, chief aviation pilot's cut-out switch 2 is Double-linkage with copilot's cut-out switch 3 and does not press to be in often and above closes down
Open state, shutoff signal A are composed in parallel by the normally open end of two switches, and shutoff signal B is composed in series by the normal-closed end of two switches, is flown
Row management computer 1 determines whether shutoff signal according to the combined situation of shutoff signal A and shutoff signal B two paths of signals.
Referring to Fig. 2, it summarizes all control logics of shutoff signal control circuit of the present invention, when two switches are not pressed
When pressure (maintaining signal), shutoff signal A disconnects " 0 ", shutoff signal B ground connection " 1 "；When pressing either switch or two switches while pressing
When pressure, shutoff signal A ground connection " 1 ", shutoff signal B disconnects " 0 "；If there is shutoff signal A ground connection " 1 ", shutoff signal B ground connection
" 1 ", then be determined as switch fault；If shutoff signal A occur disconnects " 0 ", shutoff signal B disconnects " 0 ", is equally determined as switch event
Barrier.
Referring to Fig. 3, it is the fail-safe analysis result of shutoff signal control circuit of the present invention.1. situation is malfunction
(upper disconnect lower disconnect), can be by 3 completing cutting function by compressing switch；2. situation is that normal non-pressing state is (upper to connect
Lower disconnection), it can be by 3 completing cutting function by compressing switch；3. situation is that failure or pressing state (connect under upper disconnection
It is logical), it can be by 3 completing cutting function by compressing switch；4. situation is malfunction (upper to connect lower connect), can also pass through
3 cutting function is completed by compressing switch.Switch 2 all four kinds of possible situations 1. 2. 3. 4. in, only situation 3. be failure with
State is obscured in pressing, and the possibility occurred is only 25%.
Claims (1)
1. a kind of shutoff signal control circuit, it is characterized in that：The control circuit includes computer (1), chief aviation pilot's cut-out
(2) and copilot's cut-out switch (3) are switched, chief aviation pilot's cut-out switch (2) and copilot's cut-out switch (3) are duplex
It moves and does not press to be in often and above close lower open state；
The normally open end of chief aviation pilot's cut-out switch (2) and copilot's cut-out switch (3) is in parallel, normal-closed end series connection, and respectively with
Computer (1) connects；
Shutoff signal A is composed in parallel by the normally open end of two switches, and shutoff signal B is composed in series by the normal-closed end of two switches；
Computer (1) determines whether shutoff signal according to the combined situation of shutoff signal A and shutoff signal B two paths of signals：When
Two switches do not press, and shutoff signal A is disconnected, and when shutoff signal B ground connection, computer (1) maintains signal；It is opened when pressing is any
It closes or two switchs while pressing, shutoff signal A ground connection, and when shutoff signal B disconnections, computer (1) cut-off signal；
Computer (1) according to the combined situation of shutoff signal A and shutoff signal B two paths of signals come determine switch whether failure：If
There is shutoff signal A ground connection, and shutoff signal B ground connection, is then determined as switch fault；If shutoff signal A occur to disconnect, and cut off
Signal B is disconnected, then is equally determined as switch fault.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410589342.1A CN105549448B (en) | 2014-10-28 | 2014-10-28 | A kind of shutoff signal control circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410589342.1A CN105549448B (en) | 2014-10-28 | 2014-10-28 | A kind of shutoff signal control circuit |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105549448A CN105549448A (en) | 2016-05-04 |
| CN105549448B true CN105549448B (en) | 2018-10-12 |
Family
ID=55828697
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410589342.1A Active CN105549448B (en) | 2014-10-28 | 2014-10-28 | A kind of shutoff signal control circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105549448B (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201118252Y (en) * | 2007-11-13 | 2008-09-17 | 湖北三江航天万山特种车辆有限公司 | Double driver cabin control circuit mutual locking device |
| CN101528518A (en) * | 2006-12-05 | 2009-09-09 | 波音公司 | Parking brake control for an aircraft having an electric brake system |
| CN102582608A (en) * | 2012-02-29 | 2012-07-18 | 湖南南车时代电动汽车股份有限公司 | Emergency braking electrical control device of purely electric automobile |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4202335B2 (en) * | 2005-03-22 | 2008-12-24 | ファナック株式会社 | Emergency stop circuit |
| US8393689B2 (en) * | 2006-12-22 | 2013-03-12 | The Boeing Company | Autobraking interlock for an aircraft electric brake system |
-
2014
- 2014-10-28 CN CN201410589342.1A patent/CN105549448B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101528518A (en) * | 2006-12-05 | 2009-09-09 | 波音公司 | Parking brake control for an aircraft having an electric brake system |
| CN201118252Y (en) * | 2007-11-13 | 2008-09-17 | 湖北三江航天万山特种车辆有限公司 | Double driver cabin control circuit mutual locking device |
| CN102582608A (en) * | 2012-02-29 | 2012-07-18 | 湖南南车时代电动汽车股份有限公司 | Emergency braking electrical control device of purely electric automobile |
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| Publication number | Publication date |
|---|---|
| CN105549448A (en) | 2016-05-04 |
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