CN106549485A - A kind of heading system power-switching circuit - Google Patents
A kind of heading system power-switching circuit Download PDFInfo
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- CN106549485A CN106549485A CN201510599417.9A CN201510599417A CN106549485A CN 106549485 A CN106549485 A CN 106549485A CN 201510599417 A CN201510599417 A CN 201510599417A CN 106549485 A CN106549485 A CN 106549485A
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- power
- power supplys
- heading
- supplys
- power supply
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Abstract
The invention belongs to avionics technical field.This heading system power-switching circuit, increase by two relay change-over switches in circuit, for 1# heading systems (11), as its main power source, 2# power supplys (22) as its stand-by power supply, the middle relay (13) that increases switches 1# power supplys (12) for power supply.The condition of wherein relay switch logical transition is 1# power supplys (12) failure.When 1# power supplys (12) are normal, relay switch connection power supply (12), 1# power supplys (12) are powered for heading system (11), and 2# power supplys (22) are ready standby；When 1# power supplys (12) fail, relay switch position is switched to and is connected with 2# power supplys (22), is powered for heading system (11) by 2# power supplys (22).For 2# heading systems (21), 2# power supplys (22) are as its main power source, 1# power supplys (12) as its stand-by power supply, power supply the principle is identical with 1# heading systems (11), heading system failure of removal rate is substantially reduced, and improves the security of whole machine.
Description
Technical field
The invention belongs to avionics technical field.
Prior art
Two sets of independent heading systems are installed on certain helicopter, but presently, there are following shortcoming：Due to 2 sets
The phase place of AC power cannot accomplish completely the same, and two sets of heading systems share unilateral AC power 22 on machine and make
On the basis of, and single-side power failure will cause heading system function total loss on machine.
The purpose of invention
The invention mainly solves the shortcoming of prior art, can reach following purpose by the application invented：
1) helicopter single-side power failure will not affect two sets of heading system normal works, and only two sets power supplys are altogether
Lose with heading system function can be just caused when failing.
2) substantially reduce the fault rate that helicopter heading system function loses failure.
The content of invention
For achieving the above object, in present invention design power supply automatic switchover change-over circuit.
A kind of heading system power-switching circuit, increases by two relay change-over switch Fig. 2 in circuit.
For 1# heading systems 11,1# power supplys 12 as its main power source, 2# power supplys 22 as its stand-by power supply,
The middle relay 13 that increases switches for power supply.The condition of wherein relay switch logical transition is 1# power supplys 12
Failure.When 1# power supplys 12 are normal, relay switch connection power supply 12,1# power supplys 12 are heading system 11
Power supply, 2# power supplys 22 are ready standby；When 1# power supplys 12 fail, relay switch position is switched to and 2#
Power supply 22 is connected, and is powered for heading system 11 by 2# power supplys 22.
For 2# heading systems 21,2# power supplys 22 are standby as which as its main power source, 1# power supplys 12
Power supply, power supply the principle are identical with 1# heading systems 11.
The effect of invention
For achieving the above object, design circuit of the invention reaches such effect：
1) when bilateral source is normal, 1# power supplys are powered for 1# heading systems, and 2# power supplys are supplied for 2# heading systems
Electricity.
2), during 1# or 2# power failures, 2#1# power supplys are powered for 1#, 2# power supply simultaneously.
Generally, the fault rate of single set heading system failure is 10-3, the probability of single set power-fail is
10-3, the failure probability of relay is generally 10-4.Before change, heading system whole failure condition is single set power supply
Failure or two sets of heading systems fail simultaneously, and probability of malfunction is 10-3+10-3×10-3≈10-3；Course system after change
The whole failure conditions of system are two sets of power supplys while failure or two sets of heading systems are while failure or two relays are opened
Close and fail simultaneously, probability of malfunction is 10-3×10-3+10-3×10-3+10-4×10-4=2.01 × 10-6.Therefore, from
Whole machine angle considers that heading system failure of removal rate is substantially reduced, and improves the security of whole machine.
In addition, after circuit is modified, shadow is not received in the power-fail of single set, the normal work of two sets of heading systems
Ring, very big lifting there has also been to the performance of helicopter heading system.
Description of the drawings
Fig. 1 prior art power circuits；
Fig. 2 circuit diagrams of the present invention.
A kind of heading system power-switching circuit, increases by two relay change-over switch Fig. 2 in circuit.
For 1# heading systems 11,1# power supplys 12 as its main power source, 2# power supplys 22 as its stand-by power supply,
The middle relay 13 that increases switches for power supply.The condition of wherein relay switch logical transition is 1# power supplys 12
Failure.When 1# power supplys 12 are normal, relay switch connection power supply 12,1# power supplys 12 are heading system 11
Power supply, 2# power supplys 22 are ready standby；When 1# power supplys 12 fail, relay switch position is switched to and 2#
Power supply 22 is connected, and is powered for heading system 11 by 2# power supplys 22.
For 2# heading systems 21,2# power supplys 22 are standby as which as its main power source, 1# power supplys 12
Power supply, power supply the principle are identical with 1# heading systems 11.
Claims (1)
1. a kind of heading system power-switching circuit, is characterized in that, increase by two relay conversions in circuit
Switch, for 1# heading systems (11), 1# power supplys (12) are used as its main power source, 2# power supplys (22) conduct
Its stand-by power supply, the middle relay (13) that increases switch for power supply.Wherein relay switch logical transition
Condition is 1# power supplys (12) failure.When 1# power supplys (12) are normal, relay switch connection power supply (12),
1# power supplys (12) are powered for heading system (11), and 2# power supplys (22) are ready standby；When 1# power supplys (12)
During failure, relay switch position is switched to and is connected with 2# power supplys (22), is course by 2# power supplys (22)
System (11) is powered.
For 2# heading systems (21), 2# power supplys (22) are used as its main power source, 1# power supplys (12)
Used as its stand-by power supply, power supply the principle is identical with 1# heading systems (11).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510599417.9A CN106549485A (en) | 2015-09-18 | 2015-09-18 | A kind of heading system power-switching circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510599417.9A CN106549485A (en) | 2015-09-18 | 2015-09-18 | A kind of heading system power-switching circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106549485A true CN106549485A (en) | 2017-03-29 |
Family
ID=58362428
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510599417.9A Pending CN106549485A (en) | 2015-09-18 | 2015-09-18 | A kind of heading system power-switching circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106549485A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107769365A (en) * | 2017-09-25 | 2018-03-06 | 上海卫星工程研究所 | The control system of the satellite electron product secondary power supply fail-over unit of restructural |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201877880U (en) * | 2010-08-05 | 2011-06-22 | 西安陕鼓动力股份有限公司 | Motor controlled switching circuit for primary/standby equipment |
| JP2014039364A (en) * | 2012-08-13 | 2014-02-27 | Tranceboot Co Ltd | Power supply control device |
-
2015
- 2015-09-18 CN CN201510599417.9A patent/CN106549485A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201877880U (en) * | 2010-08-05 | 2011-06-22 | 西安陕鼓动力股份有限公司 | Motor controlled switching circuit for primary/standby equipment |
| JP2014039364A (en) * | 2012-08-13 | 2014-02-27 | Tranceboot Co Ltd | Power supply control device |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107769365A (en) * | 2017-09-25 | 2018-03-06 | 上海卫星工程研究所 | The control system of the satellite electron product secondary power supply fail-over unit of restructural |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20170329 |
|
| RJ01 | Rejection of invention patent application after publication |