CN204156834U - A kind of anti-interference reset circuit based on isolation design - Google Patents
A kind of anti-interference reset circuit based on isolation design Download PDFInfo
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- CN204156834U CN204156834U CN201420542366.7U CN201420542366U CN204156834U CN 204156834 U CN204156834 U CN 204156834U CN 201420542366 U CN201420542366 U CN 201420542366U CN 204156834 U CN204156834 U CN 204156834U
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- 238000002955 isolation Methods 0.000 title claims abstract description 10
- 238000005259 measurement Methods 0.000 description 7
- RZVHIXYEVGDQDX-UHFFFAOYSA-N 9,10-anthraquinone Chemical compound C1=CC=C2C(=O)C3=CC=CC=C3C(=O)C2=C1 RZVHIXYEVGDQDX-UHFFFAOYSA-N 0.000 description 4
- 230000000903 blocking effect Effects 0.000 description 4
- 238000000034 method Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 230000037452 priming Effects 0.000 description 2
- 230000007812 deficiency Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
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Abstract
Based on an anti-interference reset circuit for isolation design, for Aerospace vehicle test, flight environment of vehicle is complicated, and reset signal cable is longer, very easily introduces the feature of interference, adopts photoelectrical coupler V to realize the completely isolated of reset signal input and output on electrically; Adopt relay receive turn the signal of telecommunication after (first few minutes of taking off, when not needing to reset to program power distribution device again) interrupt routine distributor reset circuit is to the connection of the cable of the nearly 10m at test plug place, and photoelectrical coupler V is forbidden in the positive and negative terminal short circuit that photoelectrical coupler V inputs, thus realize the thorough blockade to reset circuit.
Description
Technical field
The utility model relates to a kind of anti-interference reset circuit based on isolation design, belongs to the program power distribution field of flight control system priming system.
Background technology
Flight control system program power distribution device is for completing the program power distribution of aircraft, and after receiving the signal that takes off, working procedure distributor mission program, sends the control signal of igniting corresponding priming system and some equipment to schedule.
The reset circuit of the CPU of program power distribution device has electrification reset and hand-reset two kinds of modes, only need the signal of tens of microseconds width just can make the cpu reset of program power distribution device, the reseting port of the program power distribution device of aircraft guides to the test plug place of flight control system by the long line of about 10m, launch vehicle measurement place is guided to again by the cable of nearly 100m, by the hand-reset of ground launch vehicle measurement control program distributor before aircraft takeoff, see accompanying drawing 1; Aerospace vehicle test circumstance complication, various Electromagnetic Interference, the coupled interference etc. between circuit.(simulated flight and Live Flying is comprised) after aircraft takeoff, the long line that the reseting port of program power distribution device connects is unsettled, under severe simulated flight environment or comprise various vibration interference, under the more severe Live Flying environment of the interference such as electromagnetic wave; The reset circuit of traditional CPU more can easily be interfered after take off, if reseting port is introduced interference and is made program power distribution device exceptional reset in Live Flying process, program power distribution device then cannot send clock signal to schedule, thus causes the flight failure of aircraft.
Utility model content
The technical problem that the utility model solves is: overcome prior art deficiency, propose a kind of anti-interference reset circuit based on isolation design, increase a photoelectrical coupler V and relevant protective circuit thereof, as shown in Figure 2 at the interface of program power distribution device reset circuit.Make constrained input completely isolated on electrically.Launch vehicle measurement is by controlling the conducting of photoelectrical coupler V and the reset ending to come control program distributor, and after aircraft receives and turns the signal of telecommunication, (first few minutes of taking off) disconnects photoelectrical coupler V and extraneous connection line with electromagnetic relay; And by the input anode of photoelectrical coupler V and input negative terminal short circuit, achieve the blockade to reset circuit, thoroughly avoid the possibility of reset circuit false triggering when ground test flies with the sky.
The technical scheme that the utility model solves is: a kind of anti-interference reset circuit based on isolation design, comprises electromagnetic relay, the first diode D1, the second diode D2, the first resistance R1, the second resistance R2, the 3rd resistance R3, the 4th resistance R4, the first electric capacity C1, the second electric capacity C2, the 5th resistance R5, power supply VCC, the first not gate, the second not gate or door, photoelectrical coupler V; Electromagnetic relay comprises line bag K1, the first contact K1A, the second contact k1B, the 3rd contact K1C;
The negative pole one tunnel connection of the first diode D1 turns the signal of telecommunication, another road connects one end of relay line bag, the other end first via of relay line bag connects the positive pole of the first diode D1 by the first resistance R1, second tunnel connects the negative terminal (i.e.-B1 turning the signal of telecommunication and reset signal, system signal common port), 3rd tunnel connects one end of the second contact K1B, 4th tunnel connects one end of the 3rd contact K1C, 5th tunnel connects one end of the 3rd resistance R3, 6th tunnel connects one end of the first electric capacity C1, 7th tunnel connects the positive pole of the second diode D2, 8th tunnel connects the input negative terminal of photoelectrical coupler V, , the other end one tunnel of the second contact K1B connects the other end of the 3rd contact K1C, first contact K1A of separately leading up to connects the anode of input reset signal, a road connects one end of the second resistance R2 again, the other end first via of the second resistance R2 connects the other end of the 3rd resistance R3, second tunnel connects the other end of the first electric capacity C1, 3rd tunnel connects the negative pole of the second diode D2, 4th tunnel connects the input anode of photoelectrical coupler V, the collector electrode of the output of photoelectrical coupler V is leaded up to the 4th resistance R4 and is connected to power supply VCC, another road connects the input of the first not gate, the output connection of the first not gate or an input of door, the emitter one tunnel ground connection of photoelectrical coupler V, another road connects one end of the second electric capacity C2, the other end of the second electric capacity C2 is leaded up to the 5th resistance R5 and is connected power supply VCC, another road connects the input of the second not gate, the output connection of the second not gate or another input of door, or the output of door is as the output of whole anti-interference reset circuit.
Relay used is that (volume is only 15450-15920mm to microminiature
3) sensitive (contact time is less than 4ms) electromagnetic relay.
Described electromagnetic relay contact comprises 2 normally opened contacts and 2 normally-closed contacts.
The utility model advantage is compared with prior art:
(1) the utility model adopts photoelectrical coupler V to suppress interference, the constrained input circuit of program power distribution device reset circuit is achieved on electrically completely isolated, effectively can suppress the interference in input circuit.Compared with traditional reset circuit, improve the anti-interference of reset circuit.
(2) the utility model adopts micro-miniature sensitive electromagnetic relay to block reset circuit after turning electricity, it is characterized in that having normally closed compared with solid-state relay and often open two kinds of contacts; Compared with other electromagnetic relay, overall dimension is less, saves the device space, reduces equipment volume and weight, thus improves the carrying capacity of aircraft.
(3) the utility model uses two normally opened contact K1B, and K1C is in parallel, achieves Redundancy Design, and after a damage, another can also realize the function of blocking reset circuit.
Accompanying drawing explanation
Fig. 1 is the outside annexation schematic diagram of program power distribution device reset circuit;
Fig. 2 is the utility model program power distribution device internal reset circuit diagram.
Embodiment
Basic ideas of the present utility model are: provide a kind of anti-interference reset circuit based on isolation design, for Aerospace vehicle test, flight environment of vehicle is complicated, reset signal cable is longer, very easily introduce the feature of interference, adopt photoelectrical coupler V to realize the completely isolated of reset signal input and output on electrically; Adopt relay receive turn the signal of telecommunication after (first few minutes of taking off, when not needing to reset to program power distribution device again) interrupt routine distributor reset circuit is to the connection of the cable of the nearly 10m at test plug place, and photoelectrical coupler V is forbidden in the positive and negative terminal short circuit that photoelectrical coupler V inputs, thus realize the thorough blockade to reset circuit.
First the photoelectrical coupler V described in the utility model is specifically described, the input of photoelectrical coupler V comprises input anode, input negative terminal, output comprises collector and emitter, it is completely isolated that function makes the constrained input circuit of program power distribution device reset circuit achieve on electrically, and the utility model photoelectrical coupler V used can select GH302 model.
Again electromagnetic relay is specifically described to the electromagnetic relay described in the utility model and comprises line bag K1, normally-closed contact K1A, normally opened contact K1B, K1C, function is used for blocking reset signal, and the utility model electromagnetic relay used can select the 2JL-2 model of Guilin Space Electronics Co., Ltd.
Below in conjunction with the drawings and specific embodiments, the utility model is described in detail:
As shown in Figure 1, the reseting port of the program power distribution device of aircraft guides to launch vehicle measurement place by the cable of nearly 100m, by the hand-reset of ground launch vehicle measurement control program distributor before aircraft takeoff, receive from launch vehicle measurement and maintained by the distributor of flight control system turn the signal of telecommunication (first few minutes of taking off sends).As shown in Figure 2, based on an anti-interference reset circuit for isolation design, it is characterized in that comprising relay, the first diode D1, the second diode D2, the first resistance R1, the second resistance R2, the 3rd resistance R3, the 4th resistance R4, the first electric capacity C1, the second electric capacity C2, the 5th resistance R5, power supply VCC, the first not gate, the second not gate or door, photoelectrical coupler V; Relay comprises line bag K1, the first contact K1A, the second contact k1B, the 3rd contact K1C;
The negative pole one tunnel connection of the first diode D1 turns the signal of telecommunication.Another road connects one end of relay line bag, the other end first via of relay line bag connects the positive pole of the first diode D1 by the first resistance R1, second tunnel connects the negative terminal (i.e.-B1 end) turning the signal of telecommunication, 3rd tunnel connects one end of the second contact K1B, 4th tunnel connects one end of the 3rd contact K1C, 5th tunnel connects one end of the 3rd resistance R3, 6th tunnel connects one end of the first electric capacity C1, 7th tunnel connects the positive pole of the second diode D2, 8th tunnel connects the input negative terminal of photoelectrical coupler V, 9th tunnel connects the negative terminal (i.e.-B1 end) of the reset signal of input, the other end one tunnel of the second contact K1B connects the other end of the 3rd contact K1C, first contact K1 of separately leading up to connects the anode of input reset signal, a road connects one end of the second resistance R2 again, the other end first via of the second resistance R2 connects the other end of the 3rd resistance R3, second tunnel connects the other end of the first electric capacity C1, 3rd tunnel connects the negative pole of the second diode D2, 3rd tunnel connects the input anode of photoelectrical coupler V, the collector electrode of the output of photoelectrical coupler V is leaded up to the 4th resistance R4 and is connected to power supply VCC, another road connects the input of the first not gate, the output connection of the first not gate or an input of door, the emitter one tunnel ground connection of photoelectrical coupler V, another road connects one end of the second electric capacity C2, the other end of the second electric capacity C2 is leaded up to the 5th resistance R5 and is connected power supply VCC, another road connects the input of the second not gate, the output connection of the second not gate or another input of door, or the output of door is as the output of whole anti-interference reset circuit.
The utility model adopts photoelectrical coupler V to suppress interference, the constrained input circuit of program power distribution device reset circuit is achieved on electrically completely isolated, effectively can suppress the interference in input circuit.Compared with traditional reset circuit, improve the anti-interference of reset circuit; Adopt micro-miniature sensitive electromagnetic relay to block reset circuit after turning electricity, it is characterized in that having normally closed compared with solid-state relay and often open two kinds of contacts; And compared with other electromagnetic relay, the utility model overall dimension is less, the closing of contact is very fast with disconnection action.
The utility model uses 2 normally opened contact K1B, and K1C is in parallel, achieves Redundancy Design, and after a damage, another can also realize the function of blocking reset circuit.
During ground test (before turning the signal of telecommunication and sending), ground launch vehicle measurement sends reset signal by normally-closed contact K1A and current-limiting resistance R2, (electric capacity C1 is used for filtering to shunt resistance R3, diode D2 is used for preventing reverse voltage to the impact of photoelectrical coupler V) to photoelectrical coupler V, lead V by control photoelectrical coupler lead to and end the reset realizing program power distribution device, adopt photoelectrical coupler V that the constrained input circuit of program power distribution device reseting port is achieved on electrically completely isolated, effectively can suppress the interference in input circuit, after photoelectrical coupler V conducting, the collector electrode of the output of its photoelectrical coupler V becomes low level by high level, behind the door non-by first, become high level, with electrify restoration circuit (by VCC, R5, C2, GND forms) output jointly by or door export the reset signal of high level.
After the line bag K1 (R1 and D1 is the negative peak circuit that disappears) of electromagnetic relay receives and turns the signal of telecommunication (first few minutes of taking off), first contact K1A (normally-closed contact) disconnects, cut off the connection of the cable of program power distribution device reset circuit and nearly 10m, second contact K1B (normally opened contact) parallel with one another and the 3rd contact K1C (normally opened contact) is closed, and (parallel connection of the second contact K1B and the 3rd contact K1C achieves Redundancy Design, after a damage, another can also realize the function of blocking reset circuit), by two of photoelectrical coupler V input short circuits, thus the blockade achieved reset circuit, after preventing ground test from taking off and flight time reset circuit false triggering.
The utility model does not elaborate part and belongs to techniques well known.
Claims (2)
1., based on an anti-interference reset circuit for isolation design, it is characterized in that comprising electromagnetic relay, the first diode D1, the second diode D2, the first resistance R1, the second resistance R2, the 3rd resistance R3, the 4th resistance R4, the first electric capacity C1, the second electric capacity C2, the 5th resistance R5, power supply VCC, the first not gate, the second not gate or door, photoelectrical coupler V; Electromagnetic relay comprises line bag K1, the first contact K1A, the second contact K1B, the 3rd contact K1C;
The negative pole one tunnel connection of the first diode D1 turns the signal of telecommunication, another road connects one end of electromagnetic relay line bag, the other end first via of electromagnetic relay line bag connects the positive pole of the first diode D1 by the first resistance R1, second tunnel connects the negative terminal turning the signal of telecommunication and reset signal, i.e. system signal common port-B1, 3rd tunnel connects one end of the second contact K1B, 4th tunnel connects one end of the 3rd contact K1C, 5th tunnel connects one end of the 3rd resistance R3, 6th tunnel connects one end of the first electric capacity C1, 7th tunnel connects the positive pole of the second diode D2, 8th tunnel connects the input negative terminal of photoelectrical coupler V, the other end one tunnel of the second contact K1B connects the other end of the 3rd contact K1C, first contact K1A of separately leading up to connects the anode of input reset signal, a road connects one end of the second resistance R2 again, the other end first via of the second resistance R2 connects the other end of the 3rd resistance R3, second tunnel connects the other end of the first electric capacity C1, 3rd tunnel connects the negative pole of the second diode D2, 4th tunnel connects the input anode of photoelectrical coupler V, the collector electrode of the output of photoelectrical coupler V is leaded up to the 4th resistance R4 and is connected to power supply VCC, another road connects the input of the first not gate, the output connection of the first not gate or an input of door, the emitter one tunnel ground connection of photoelectrical coupler V, another road connects one end of the second electric capacity C2, the other end of the second electric capacity C2 is leaded up to the 5th resistance R5 and is connected power supply VCC, another road connects the input of the second not gate, the output connection of the second not gate or another input of door, or the output of door is as the output of whole anti-interference reset circuit.
2. a kind of anti-interference reset circuit based on isolation design according to claim 1, is characterized in that: relay micro-miniature sensitive electromagnetic relay used.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420542366.7U CN204156834U (en) | 2014-09-19 | 2014-09-19 | A kind of anti-interference reset circuit based on isolation design |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420542366.7U CN204156834U (en) | 2014-09-19 | 2014-09-19 | A kind of anti-interference reset circuit based on isolation design |
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| Publication Number | Publication Date |
|---|---|
| CN204156834U true CN204156834U (en) | 2015-02-11 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420542366.7U Expired - Lifetime CN204156834U (en) | 2014-09-19 | 2014-09-19 | A kind of anti-interference reset circuit based on isolation design |
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| Country | Link |
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| CN (1) | CN204156834U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104980134A (en) * | 2015-07-01 | 2015-10-14 | 青岛歌尔声学科技有限公司 | Reset circuit and electronic equipment having the same |
| CN107643816A (en) * | 2017-09-22 | 2018-01-30 | 北京航天自动控制研究所 | A kind of antilogical negative terminal control resets block linkage circuit and resets control method |
-
2014
- 2014-09-19 CN CN201420542366.7U patent/CN204156834U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104980134A (en) * | 2015-07-01 | 2015-10-14 | 青岛歌尔声学科技有限公司 | Reset circuit and electronic equipment having the same |
| CN104980134B (en) * | 2015-07-01 | 2018-10-19 | 青岛歌尔声学科技有限公司 | A kind of reset circuit and electronic equipment with the circuit |
| CN107643816A (en) * | 2017-09-22 | 2018-01-30 | 北京航天自动控制研究所 | A kind of antilogical negative terminal control resets block linkage circuit and resets control method |
| CN107643816B (en) * | 2017-09-22 | 2020-02-14 | 北京航天自动控制研究所 | Inverse logic negative terminal controlled reset lockout linkage circuit and reset control method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20150211 |