CN209030186U - A kind of discrete signal redundance output circuit - Google Patents
A kind of discrete signal redundance output circuit Download PDFInfo
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- CN209030186U CN209030186U CN201821804943.XU CN201821804943U CN209030186U CN 209030186 U CN209030186 U CN 209030186U CN 201821804943 U CN201821804943 U CN 201821804943U CN 209030186 U CN209030186 U CN 209030186U
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Abstract
The utility model discloses a kind of discrete signal redundance output circuits, including resistance R1, photo-coupler, resistance R2, resistance R3, NMOS tube and several diodes, first interface is provided on the photo-coupler, second interface, third interface and the 4th interface, the first interface of described one end resistance R1 and photo-coupler connects, the second interface of photo-coupler is connect with ground potential, the third interface of photo-coupler connects to power supply, 4th interface of photo-coupler is connect with resistance R2, resistance R2 is connect with resistance R3 and NMOS tube grid respectively, the resistance R3 other end is connect with ground potential, NMOS tube source electrode is connect with ground potential, NMOS tube drain electrode is connect with the cathode of several diodes, discrete output channel all the way can only be passed through, realize the output of redundance signal, it avoids designing It covers duplicate circuit more, effectively reduces the weight of equipment cost and controller.
Description
Technical field
The utility model relates to avionics field more particularly to a kind of discrete signal redundance output circuits.
Background technique
With the application of the more power technologies of aircraft, more and more airborne systems use electronic control technology.Some aircraft-levels
Discrete signal, such as landing-gear control position command, wheel carrying signal, gear up signal and flap configuration letter
It number is interacted often through discrete mode, in general, for the signal cross-talk for preventing different channels, some signal and one
The crosslinking of system or an interface just at least needs discrete output channel all the way, therefore when the relationship of crosslinking is more, certainly will be very big
Increase more duplicate circuit designs of set, improve equipment cost and increases the weight of controller.
Summary of the invention
The technical issues of the utility model solves: a kind of discrete signal redundance output circuit is proposed, to reduce component
Quantity, the design of simplified control device, to reduce design weight, space and expense cost.
The technical solution of the utility model includes:
A kind of discrete signal redundance output circuit, including resistance R1, photo-coupler, resistance R2, resistance R3, NMOS tube and
Several diodes are provided with first interface, second interface, third interface and the 4th interface on the photo-coupler, described
The one end resistance R1 and the first interface of photo-coupler connect, the second interface of photo-coupler connect with ground potential, photo-coupler
Third interface connect to power supply, the 4th interface of photo-coupler is connect with resistance R2, resistance R2 respectively with resistance R3 and NMOS
Tube grid connection, the resistance R3 other end are connect with ground potential, and NMOS tube source electrode is connect with ground potential, and NMOS tube drains and several
The cathode of diode connects.
The resistance R1 is also connect with control signal end.
Several diode cathodes output redundance/open discrete signal.
The utility model has the beneficial effects that propose a kind of discrete signal redundance output circuit, it can be only by discrete all the way
Output channel realizes the output of redundance signal, avoids designing more duplicate circuits of set, effectively reduces equipment cost and control
The weight of device processed, the utility model also have at low cost, functional reliability height, versatile feature.
Detailed description of the invention
Fig. 1 is the utility model connection schematic diagram；
Fig. 2 is the utility model application schematic diagram.
Specific embodiment
A kind of discrete signal redundance output circuit, including resistance R1, photo-coupler, resistance R2, resistance R3, NMOS tube and
Several diodes are provided with first interface, second interface, third interface and the 4th interface on the photo-coupler, described
The one end resistance R1 and the first interface of photo-coupler connect, the second interface of photo-coupler connect with ground potential, photo-coupler
Third interface connect to power supply VCC, the 4th interface of photo-coupler is connect with resistance R2, resistance R2 respectively with resistance R3 and
The connection of NMOS tube grid, the resistance R3 other end connect with ground potential, and NMOS tube source electrode is connect with ground potential, if NMOS tube drain and
The cathode connection of dry diode.
The resistance R1 is also connect with control signal end.
Several diode cathodes output redundance/open discrete signal.
Embodiment: as shown in Fig. 2, the utility model output end out1, out4 output end respectively with signal acquisition circuit and
When indicator light connects, when controlling signal is high level, photoelectrical coupler conducting, so that NMOS transistor conduction is driven, output end
The end out1, out2, out3 and out4 exports earth signal, and signal picker collects " ground " (low) signal, and indicator light ignites；When
When control signal is low level, photoelectrical coupler cut-off, and then NMOS tube is ended, output end out1, out2, out3 and out4
End is high-impedance state, and signal picker collects "high" signal, and indicator light extinguishes.
Claims (3)
1. a kind of discrete signal redundance output circuit, it is characterised in that: including resistance R1, photo-coupler, resistance R2, resistance
R3, NMOS tube and several diodes are provided with first interface, second interface, third interface and on the photo-coupler
The first interface of four interfaces, described one end resistance R1 and photo-coupler connects, and the second interface and ground potential of photo-coupler connect
It connects, the third interface of photo-coupler is connect with power supply VCC, and the 4th interface of photo-coupler is connect with resistance R2, resistance R2 difference
It is connect with resistance R3 and NMOS tube grid, the resistance R3 other end is connect with ground potential, and NMOS tube source electrode is connect with ground potential, NMOS
Pipe drain electrode is connect with the cathode of several diodes.
2. a kind of discrete signal redundance output circuit according to claim 1, it is characterised in that: the resistance R1 is also
It is connect with control signal end.
3. a kind of discrete signal redundance output circuit according to claim 1, it is characterised in that: described several two
Pole pipe anode output redundance/open discrete signal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821804943.XU CN209030186U (en) | 2018-11-02 | 2018-11-02 | A kind of discrete signal redundance output circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821804943.XU CN209030186U (en) | 2018-11-02 | 2018-11-02 | A kind of discrete signal redundance output circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209030186U true CN209030186U (en) | 2019-06-25 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
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| CN201821804943.XU Active CN209030186U (en) | 2018-11-02 | 2018-11-02 | A kind of discrete signal redundance output circuit |
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| CN (1) | CN209030186U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110322672A (en) * | 2019-07-17 | 2019-10-11 | 陕西千山航空电子有限责任公司 | A kind of helicopter engine fire alarm detection box |
-
2018
- 2018-11-02 CN CN201821804943.XU patent/CN209030186U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110322672A (en) * | 2019-07-17 | 2019-10-11 | 陕西千山航空电子有限责任公司 | A kind of helicopter engine fire alarm detection box |
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