CN103036303B - Power supply switching circuit of test equipment - Google Patents
Power supply switching circuit of test equipment Download PDFInfo
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- CN103036303B CN103036303B CN201210528407.2A CN201210528407A CN103036303B CN 103036303 B CN103036303 B CN 103036303B CN 201210528407 A CN201210528407 A CN 201210528407A CN 103036303 B CN103036303 B CN 103036303B
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Abstract
The invention relates to the technical field of power supply switching, in particular to a power supply switching circuit of test equipment. The power supply switching circuit of the test equipment is mainly applicable to relevant test equipment used in an air vehicle testing stage. The test equipment is powered-up to work by a power supply on the ground in a ground test and by a power supply carried by a carrier in a flight test. The power supply switching circuit of the test equipment comprises a ground power supply and a carrier power supply, wherein two switch gears of a power supply switching control switch of the test equipment are respectively connected with the ground power supply and the carrier power supply, and the power supply switching control switch of the test equipment is controlled by a second relay to achieve gear switching between the ground power supply and the carrier power supply. The power supply switching circuit of the test equipment is simple in structure, and safe and reliable in use. Actual use proves that smooth switching between the two power supplies is well achieved by using the power supply switching circuit of the test equipment.
Description
Technical field
The present invention relates to power converter topology field, specifically, relate to a kind of testing equipment power supply change-over circuit, be mainly used on aircraft experimental stage associated test devices, when ground experiment, testing equipment is worked by surface power supply Power supply, and when making a flight test, the carrier power supply that testing equipment is carried by carrier is powered.
Background technology
Radiotechnics is widely used in the Aerospace Products development stage, as a kind of means of testing of wireless link, test macro should keep separate with system under test (SUT), and testing equipment except having except interface conjunctionn with equipment under test on inputting, and other parts are connected with system under test (SUT) onrelevant.Testing equipment, when ground uses, is worked by surface power supply Power supply; During flight test, testing equipment is by the carrier power supply powered operation be placed on carrier.
Surface power supply power supply and carrier power supply, according to user demand, must be changed on suitable opportunity.
Therefore, the present invention be exactly with above-mentioned background technology for starting point, design a kind of circuit meeting instructions for use, the smooth switching between two kinds of power supplys can be realized exactly.
Summary of the invention
The object of the invention is to overcome the deficiencies in the prior art, adapt to reality need, a kind of testing equipment power supply change-over circuit is provided, be mainly used on aircraft associated test devices, testing equipment is when ground uses, worked by surface power supply Power supply, when making a flight test, the carrier power supply that testing equipment is carried by carrier is powered.
In order to realize object of the present invention, the technical solution used in the present invention is:
A kind of testing equipment power supply change-over circuit, comprise surface power supply power supply and carrier power supply, the power control switch of testing equipment is connected with surface power supply power supply and carrier power supply respectively at two switch position, and the power control switch of described testing equipment is by the second gear switch of Control realization between surface power supply power supply and carrier power supply;
Coil second contact of the second relay is earth terminal, turn electricity and get out normally closed 3rd contact of signal circuit and the second relay and normally closed 4th contacting of the second relay, the second relay often open the first contact, the second relay often open the second contact, the 4th contact of often opening of often driving the 3rd contact and the second relay of the second relay all connects with carrier power supply; And the second relay often open the first contact, the second relay often open the second contact, the second relay often open the 3rd contact and the second relay often open the 4th contact all with normally closed first contact of the 3rd relay and normally closed second contacting of the 3rd relay; Normally closed first contact of the second relay, normally closed second contact of the second relay are all connected with the power control switch of examination equipment; In coil first contact of the second relay not electric time, normally closed 3rd contact of normally closed first contact of the second relay, normally closed second contact of the second relay, the second relay, normally closed 4th contact of the second relay respectively with normally closed first contact of the 3rd relay, normally closed 6th contact of the second relay, normally closed 7th contact of the second relay, normally closed 8th contacting of the second relay, be neutral gear.
Also comprise the 3rd relay, coil first contact of the 3rd relay is for turning electric control signal circuit input end, coil second contact of the 3rd relay is earth terminal, normally closed first contact of the 3rd relay and normally closed second contact of the 3rd relay and carrier power supply are connected, first contact of often opening of the 3rd relay is connected with coil first contact of the second relay with second contact of often opening of the 3rd relay, in coil first contact of the 3rd relay not electric time, normally closed 3rd contact of the 3rd relay and normally closed 4th contact of the 3rd relay respectively with normally closed first contact of the 3rd relay and normally closed second contacting of the 3rd relay, now, normally closed 3rd contact of the 3rd relay and normally closed 4th contact of the 3rd relay are neutral gear, realized being switched on or switched off with the second relay by second contact of often opening of often driving the first contact and the 3rd relay of this 3rd relay of the 3rd Control.
Also comprise the first relay, coil first contact of the first relay is connected with surface power supply power supply, coil second contact ground of the first relay; Normally closed first contact of the first relay with turn electricity and get out signal circuit and be communicated with, when the first relay coil first contact not electric time, turn electricity and get out the connection of signal circuit by normally closed first contact of the first relay and normally closed second contact of the first relay, realize coil first contacting of the second relay of the first relay and the second relay, when coil first contact of the first relay obtains electric, normally closed first contact of the first relay and normally closed second contact of the first relay be broken into neutral gear.
Beneficial effect of the present invention is: structure is simple, safe and reliable, uses checking, can be good at realizing the smooth conversion between two kinds of power supplys through reality.
Accompanying drawing explanation
Fig. 1 is circuit theory diagrams of the present invention.
Fig. 2 is connection " turning electric control signal " switch and " carrier power supply " switch, the schematic diagram of each switch position after disconnection " surface power supply power supply " switch.
Fig. 3 is connection " turn electricity and get out signal " switch, the schematic diagram of each switch position after disconnection " turning electric control signal " switch.
Fig. 4 is the schematic diagram of each switch position after connection " surface power supply power supply " switch.
Mark in figure:
Normally closed second contact of normally closed first contact 2 second relay of 1 second relay
Normally closed 4th contact of normally closed 3rd contact 4 second relay of 3 second relays
Normally closed second contact of normally closed first contact 6 the 3rd relay of 5 the 3rd relays
Normally closed first contact of normally closed 3rd contact 8 first relay of 7 first relays
Normally closed 5th contact 10 second relay of 9 second relays often open the first contact
Normally closed 6th contact 12 second relay of 11 second relays often open the second contact
Normally closed 7th contact 14 second relay of 13 second relays often open the 3rd contact
Normally closed 8th contact 16 second relay of 15 second relays often open the 4th contact
Normally closed 3rd contact 18 the 3rd relay of 17 the 3rd relays often open the first contact
Normally closed 4th contact 20 the 3rd relay of 19 the 3rd relays often open the second contact
Normally closed 4th contact 22 first relay of 21 first relays often open the first contact
Normally closed second contact 24 first relay of 23 first relays often open the second contact
Coil first contact of coil second contact 26 the 3rd relay of 25 the 3rd relays
Coil first contact of coil second contact 28 second relay of 27 second relays
Coil first contact of coil second contact 30 first relay of 29 first relays
Embodiment
Below in conjunction with drawings and Examples, the present invention is further described:
Embodiment: see Fig. 1-Fig. 4.
A kind of testing equipment power supply change-over circuit, comprise surface power supply power supply and carrier power supply, the power control switch of testing equipment connects with surface power supply power supply and carrier power supply respectively at two switch position, as shown in Fig. 1, normally closed second contact 2 of normally closed first contact 1, second relay of the second relay is respectively the power control switch incoming end of testing equipment, and the power control switch of described testing equipment is by the second gear switch of relay K 2 control realization between surface power supply power supply and carrier power supply.Normally closed second contact 2 of normally closed first contact 1, second relay of the second relay when normally closed 6th contact 11 of normally closed 5th contact 9, second relay with the second relay is connected, by surface power supply Power supply; Normally closed second contact 2 of normally closed first contact 1, second relay of the second relay with the second relay often open the first contact 10, second relay often open the second contact 12 connect time, powered by carrier power supply.
Also comprise the 3rd relay K 3, as figure, coil first contact 26 of the 3rd relay is for turning the incoming end of electric control signal circuit, coil second contact 25 of the 3rd relay is earth terminal, normally closed first contact 5 of the 3rd relay, connect with carrier power supply with normally closed second contact 6 of the 3rd relay, first contact 18 of often opening of the 3rd relay is connected with coil first contact 28 of the second relay with second contact 20 of often opening of the 3rd relay, what control its 3rd relay by the 3rd relay K 3 often opens the first contact 18, 3rd relay often open the second contact 20 respectively with normally closed first contact 5 of the 3rd relay, normally closed second contact 6 of the 3rd relay is connected, realize being switched on or switched off with the second relay K 2, coil second contact 27 of the second relay is earth terminal, after second relay is connected, normally closed first contact 1 of its second relay, normally closed second contact 2 of the second relay respectively with the second relay often open the first contact 10, second contact 12 of often opening of the second relay is connected, switch to and connect with carrier power supply.
3rd relay K 3 not electric time, normally closed first contact 5 of the 3rd relay of its control circuit, normally closed second contact 6 of the 3rd relay lays respectively at normally closed 3rd contact 17 of the 3rd relay, normally closed 19 grades, 4th contact of the 3rd relay is neutral gear, the 3rd relay K 3 via turn electric control signal circuit obtain electric after, normally closed first contact 5 of the 3rd relay of its control circuit, what normally closed second contact 6 of the 3rd relay laid respectively at the 3rd relay often opens the first contact 18, often open 20 grades, the second contact and the carrier power supply of the 3rd relay are connected, and connect with the second relay K 2 and make it electric, normally closed first contact 1 of driving switch second relay of the second relay K 2, normally closed second contact 2 of the second relay, normally closed 3rd contact 3 of the second relay, normally closed 4th contact 4 of the second relay is respectively from normally closed first contact 9 of the 3rd relay, normally closed 6th contact 11 of the second relay, normally closed 7th contact 13 of the second relay, what normally closed 15 grades, 8th contact of the second relay switched to the second relay often opens the first contact 10, second relay often open the second contact 12, second relay often open the 3rd contact 14, 16 grades, the 4th contact of often opening of the second relay is connected with carrier power supply.
Also comprise the first relay K 1, the input of coil first contact 30 of described first relay K 1 using surface power supply power supply as the first relay, with coil second contact of the first relay for earth terminal; Normally closed first contact 8 of the first relay of the control circuit of described first relay K 1 with turn electricity and get out signal circuit and be communicated with, when the first relay K 1 not electric time, normally closed first contact 8 of the first relay and normally closed second contact of the first relay
23 connect, normally closed second contact 23 of the first relay and coil first contact 28 of the second relay are connected, turn electricity to get out signal circuit and to be connected by normally closed first contact 8 of the first relay of the first relay K 1 and the second relay K 2 and as coil first contact 28 input of the second relay, when the first relay K 1 obtains electric, normally closed first contact 8 of the first relay is broken into neutral gear.
When making a flight test, undertaken by following operating process:
1. connect " surface power supply power supply " switch, normally closed second contact 2 of normally closed first contact 1, second relay of the second relay is communicated with electric with normally closed 6th contact 11 of normally closed 5th contact 9, second relay of the second relay respectively, testing equipment is in running order, by surface power supply Power supply, this switch can be disconnected at any time, terminate testing equipment work.
2. connect " turning electric control signal " switch and " carrier power supply " switch, disconnect " surface power supply power supply " switch, second relay K 2, 3rd relay K 3 works, each contacts status is as shown in Fig. 2, coil first contact 26 of the 3rd relay is high potential input, coil second contact 25 of the 3rd relay is earth terminal, normally closed first contact 5 of the 3rd relay, the gear of normally closed second contact 6 of the 3rd relay is by normally closed 3rd contact 17 of the 3rd relay, normally closed 4th contact 19 of the 3rd relay become with the 3rd relay often open the first contact 18, second contact 20 of often opening of the 3rd relay is connected, coil first contact 28 of the second relay is high potential input and connects with carrier power supply, coil second contact 27 of the second relay is earth terminal, second relay K 2 electric after, normally closed first contact 1 of gear second relay, normally closed second contact 2 of the second relay, normally closed 3rd contact 3 of the second relay, normally closed 4th contact 4 of the second relay is respectively from normally closed 5th contact 9 of the second relay, normally closed 6th contact 11 of the second relay, normally closed 7th contact 13 of the second relay, normally closed 15 grades, 8th contact of the second relay switch to the second relay often open the first contact 10, second relay often open the second contact 12, second relay often open the 3rd contact 14, the 4th contact 16 of often opening of the second relay is connected, testing equipment transfers carrier power supply powered operation to by surface power supply Power supply, coil first contact 30 of the first relay is high potential, coil second contact 29 of the first relay is earth terminal, the gear of normally closed first contact 8 of normally closed 3rd contact 7, first relay of the first relay is connected normally closed second contact 23 become with normally closed 4th contact 21, first relay of the first relay connected from second contact 24 of often opening of often driving the first contact 22, first relay with the first relay, maintains coil first contact 28 of the second relay for high potential input simultaneously.
3. disconnect " turning electric control signal " switch, 3rd relay K 3 quits work, normally closed first contact 5 of the 3rd relay, the gear of normally closed second contact 6 of the 3rd relay by with the 3rd relay often open the first contact 18, second contact 20 on-state of often opening of the 3rd relay reverts to normally closed 3rd contact 17 with the 3rd relay, normally closed 4th contact 19 of the 3rd relay is connected, become neutral gear, turn electricity and get out signal circuit by the direct high potential input being communicated with coil first contact 28 as the second relay with coil first contact 28 of the second relay in normally closed first contact 8 of the first relay and normally closed second contact 23 of the first relay, second relay K 2 continues to be powered by carrier power supply, form self-insurance state, testing equipment is still by carrier power supply powered operation, simultaneously by the second relay K 2 one groups of closing contacts, the voltage signal of carrier power supply is delivered to and turns the instruction of electric console, complete the conversion between surface power supply power supply and carrier power supply.
4. if desired go back to the work of surface power supply Power supply or stop testing equipment operating state, then connect " surface power supply power supply " switch, now the first relay K 1 works, normally closed 3rd contact 7 of the first relay, the gear of normally closed first contact 8 of the first relay is by normally closed 4th contact 21 with the first relay, first relay normally closed second contact 23 connect become with the first relay often open the first contact 22, first relay often open the second contact 24, second relay K 2 dead electricity quits work, each switch returns to state shown in Fig. 4, carrier power supply is stopped power supply, transfer the work of surface power supply Power supply to, disconnect " surface power supply power supply " switch, testing equipment quits work.
What embodiments of the invention were announced is preferred embodiment, but is not limited thereto, those of ordinary skill in the art; very easily according to above-described embodiment, understand spirit of the present invention, and make different amplifications and change; but only otherwise depart from spirit of the present invention, all in protection scope of the present invention.
Claims (1)
1. a testing equipment power supply change-over circuit, it is characterized in that: comprise surface power supply power supply and carrier power supply, the power control switch of testing equipment is connected with surface power supply power supply and carrier power supply respectively at two switch position, and the power control switch of described testing equipment is by the second gear switch of Control realization between surface power supply power supply and carrier power supply;
Coil second contact (27) of the second relay is earth terminal, turn electricity and get out normally closed 3rd contact (3) of signal circuit and the second relay and normally closed 4th contacting of the second relay, the second relay often open the first contact (10), the second relay often open the second contact (12), the 4th contact (16) of often opening of often driving the 3rd contact (14) and the second relay of the second relay all connects with carrier power supply; And the second relay often open the first contact (10), the second relay often open the second contact (12), the 4th contact (16) of often opening of often driving the 3rd contact (14) and the second relay of the second relay all connects with normally closed first contact (5) of the 3rd relay and normally closed second contact (6) of the 3rd relay; Normally closed first contact (1) of the second relay, normally closed second contact (2) of the second relay are all connected with the power control switch of examination equipment; In coil first contact (28) of the second relay not electric time, normally closed 3rd contact (3) of normally closed first contact (1) of the second relay, normally closed second contact (2) of the second relay, the second relay, normally closed 4th contact (4) of the second relay respectively with normally closed 6th contact (11), normally closed 7th contact (13) of the second relay of normally closed first contact (9) of the 3rd relay, the second relay, normally closed 8th contact (15) of the second relay is connected, and is neutral gear;
Also comprise the 3rd relay, coil first contact (26) of the 3rd relay is for turning electric control signal circuit input end, coil second contact (25) of the 3rd relay is earth terminal, normally closed first contact (5) of the 3rd relay and normally closed second contact (6) of the 3rd relay are connected with carrier power supply, first contact (18) of often opening of the 3rd relay is connected with coil first contact (28) of the second relay with second contact (20) of often opening of the 3rd relay, in coil first contact (26) of the 3rd relay not electric time, normally closed 3rd contact (17) of the 3rd relay and normally closed 4th contact (19) of the 3rd relay are connected with normally closed first contact (5) of the 3rd relay and normally closed second contact (6) of the 3rd relay respectively, now, normally closed 3rd contact (17) of the 3rd relay and normally closed 4th contact (19) of the 3rd relay are neutral gear, realized being switched on or switched off with the second relay by second contact (20) of often opening of often driving the first contact (18) and the 3rd relay of this 3rd relay of the 3rd Control,
Also comprise the first relay, coil first contact (30) of the first relay is connected with surface power supply power supply, coil second contact (29) ground connection of the first relay, normally closed first contact (8) of the first relay with turn electricity and get out signal circuit and be communicated with, when the first relay coil first contact (30) not electric time, turn electricity and get out the connection of signal circuit by normally closed first contact (8) of the first relay and normally closed second contact (23) of the first relay, coil first contact (28) realizing the second relay of the first relay and the second relay is connected, when coil first contact (30) of the first relay obtains electric, normally closed first contact (8) of the first relay and normally closed second contact (23) of the first relay be broken into neutral gear.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210528407.2A CN103036303B (en) | 2012-12-10 | 2012-12-10 | Power supply switching circuit of test equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210528407.2A CN103036303B (en) | 2012-12-10 | 2012-12-10 | Power supply switching circuit of test equipment |
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| Publication Number | Publication Date |
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| CN103036303A CN103036303A (en) | 2013-04-10 |
| CN103036303B true CN103036303B (en) | 2015-05-27 |
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| CN201210528407.2A Active CN103036303B (en) | 2012-12-10 | 2012-12-10 | Power supply switching circuit of test equipment |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104505929B (en) * | 2014-12-08 | 2016-09-21 | 中国运载火箭技术研究院 | A kind of many buses of aircraft turn electricity power-down circuit |
| CN105656304B (en) * | 2016-02-18 | 2018-10-12 | 江西洪都航空工业集团有限责任公司 | A method of it is isolated using sequential and inhibits PWM power cord conducted emissions |
| CN105738657A (en) * | 2016-02-18 | 2016-07-06 | 江西洪都航空工业集团有限责任公司 | Aircraft measurement and control system automatic power supply device |
| CN112786384B (en) * | 2021-02-04 | 2023-04-28 | 湖北三江航天红峰控制有限公司 | Missile-borne switching power-off control device based on electromagnetic relay |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101585415A (en) * | 2009-06-12 | 2009-11-25 | 四川华盛强航空地面设备有限公司 | Dual power source driving system of aviation ground equipment |
| CN102738866A (en) * | 2012-06-18 | 2012-10-17 | 航天东方红卫星有限公司 | Satellite storage battery pack control circuit with ground emergency power-off protection function |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5281859A (en) * | 1991-06-13 | 1994-01-25 | Molex Incorporated | Automatically switched power receptacle |
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2012
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101585415A (en) * | 2009-06-12 | 2009-11-25 | 四川华盛强航空地面设备有限公司 | Dual power source driving system of aviation ground equipment |
| CN102738866A (en) * | 2012-06-18 | 2012-10-17 | 航天东方红卫星有限公司 | Satellite storage battery pack control circuit with ground emergency power-off protection function |
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