CN220796304U - Discrete quantity conversion circuit and WQAR's functional test platform - Google Patents
Discrete quantity conversion circuit and WQAR's functional test platform Download PDFInfo
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- CN220796304U CN220796304U CN202322629910.3U CN202322629910U CN220796304U CN 220796304 U CN220796304 U CN 220796304U CN 202322629910 U CN202322629910 U CN 202322629910U CN 220796304 U CN220796304 U CN 220796304U
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- 238000006243 chemical reaction Methods 0.000 title claims abstract description 20
- 238000011990 functional testing Methods 0.000 title claims abstract description 10
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- 238000012360 testing method Methods 0.000 abstract description 27
- 238000000034 method Methods 0.000 abstract description 8
- 238000011161 development Methods 0.000 abstract description 6
- 238000013461 design Methods 0.000 abstract description 3
- 230000000007 visual effect Effects 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000009533 lab test Methods 0.000 description 2
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Abstract
The utility model relates to a discrete quantity conversion circuit and a function test platform of WQAR. A WQAR functional test platform comprises a computer and a discrete quantity conversion circuit; and the input interface is connected with an output port of the PCIE board card and is connected with a computer. The discrete quantity conversion circuit converts logic 1 (+ 3.3V), logic 0 (0V) into logic 1 (+ 28V) and logic 0 (0V), and five discrete quantity controls during WQAR testing are realized. The test platform has the characteristic of miniaturization, can verify the performance of the test platform in the WQAR development stage, and ensures the correctness and rationality of WQAR design. LabVIEW visual programming is adopted, so that the test platform is convenient and simple when the WQAR test signals are configured. The discrete quantity information is controlled through software, so that the process of manually plugging and unplugging cables is saved, the testing efficiency is greatly improved, and the automatic testing is realized.
Description
Technical Field
The utility model relates to WQAR functional testing, in particular to a discrete quantity conversion circuit and a WQAR functional testing platform.
Background
The Wireless Quick Access Recorder (WQAR) is an important storage device on the aircraft, and plays an important role in analyzing and researching typical unsafe events in the industry and dynamically evaluating the flight safety state and safety of the industry. The domestic replacement process of the current avionics promotes WQAR domestic development. In WQAR development, a large number of tests and verification functions are required for the data receiving function. These data include control messages in discrete amounts and flight data messages in ARINC717 and ARINC429 formats. Therefore, WQAR functional test platforms must stably send discrete amounts of ARINC717 and ARINC429 formatted messages.
At present, a small laboratory test platform in WQAR development stages is lacking; in addition, in the current test process, complicated cable plugging and unplugging is required for controlling discrete quantity, so that the test efficiency is greatly reduced.
Disclosure of utility model
The application solves the problem of lacking a small laboratory test platform in WQAR development stage, reduces the frequency of plugging cables for controlling discrete quantity in the test process, and provides a discrete quantity conversion circuit and a WQAR functional test platform.
In order to solve the technical problems, the technical scheme adopted by the application is as follows:
A discrete quantity conversion circuit comprises a first resistor, a second resistor, a third resistor, a fourth resistor, a first NPN triode, a second NPN triode and a voltage stabilizing diode; one end of the first resistor is an input interface, and the other end of the first resistor is connected with the base electrode of the first NPN triode and one end of the second resistor; the other end of the second resistor is connected with the emitter of the first NPN triode, the emitter of the second NPN triode and the anode of the voltage stabilizing diode and is grounded; one end of the third resistor is connected with a 3.3V power supply, and the other end of the third resistor is connected with the collector electrode of the first NPN triode and the base electrode of the second NPN triode; one end of the fourth resistor is connected with a 28V power supply, and the other end of the fourth resistor is connected with a collector electrode of the second NPN triode and a negative electrode of the voltage stabilizing diode and is used as an output interface.
The discrete quantity conversion circuit converts logic 1 (+ 3.3V), logic 0 (0V) into logic 1 (+ 28V) and logic 0 (0V), and five discrete quantity controls during WQAR testing are realized.
A WQAR functional test platform comprises a computer and the discrete quantity conversion circuit;
and the input interface is connected with an output port of the PCIE board card and is connected with a computer.
When in use, WQAR is connected with a computer through a discrete quantity conversion circuit; and the computer is connected through PCIE. The PCIE board is controlled by the computer through LabVIEW software programming to send ARINC717, ARINC429 and discrete amount format messages, so that the aim of WQAR function test is fulfilled. The specific LabVIEW software programming control method is the field of common knowledge.
The application has the beneficial effects that:
(1) The test platform has the characteristic of miniaturization, can verify the performance of the test platform in the WQAR development stage, and ensures the correctness and rationality of WQAR design.
(2) LabVIEW visual programming is adopted, so that the test platform is convenient and simple when the WQAR test signals are configured.
(3) The discrete quantity information is controlled through software, so that the process of manually plugging and unplugging cables is saved, the testing efficiency is greatly improved, and the automatic testing is realized.
Drawings
FIG. 1 is a discrete quantity conversion circuit diagram of a WQAR functional test platform of the present utility model;
FIG. 2 is a block diagram of a functional test platform of WQAR of the present utility model;
The first resistor 1, the second resistor 2, the third resistor 3, the fourth resistor 4, the first NPN triode 5, the second NPN triode 6 and the zener diode 7.
Detailed Description
In order to further describe the technical means and effects adopted by the present utility model for achieving the intended purpose, the following detailed description will refer to the specific implementation, structure, characteristics and effects according to the present utility model with reference to the accompanying drawings and preferred embodiments.
The application realizes WQAR function test and conveniently and rapidly tests the discrete quantity message of WQAR.
Example 1
As shown in fig. 1, an embodiment of the present application provides a discrete magnitude conversion circuit, which may include a first resistor 1, a second resistor 2, a third resistor 3, a fourth resistor 4, a first NPN triode 5, a second NPN triode 6, and a zener diode 7; one end of the first resistor 1 is an input interface and is connected with an output port of the PCIE board card, and the other end of the first resistor 1 is connected with a base electrode of the first NPN triode 5 and one end of the second resistor 2; the other end of the second resistor 2 is connected with the emitter of the first NPN triode 5, the emitter of the second NPN triode 6 and the anode of the zener diode 7 and is grounded; one end of the third resistor 3 is connected with a 3.3V power supply, and the other end of the third resistor 4 is connected with the collector electrode of the first NPN triode 5 and the base electrode of the second NPN triode 6; one end of the fourth resistor 4 is connected with a 28V power supply, and the other end of the fourth resistor 4 is connected with a collector electrode of the second NPN triode 6 and a cathode of the zener diode 7 and is used as an output interface.
Five discrete quantity controls during WQAR testing can be realized by a discrete quantity conversion circuit, wherein the discrete quantity conversion circuit can convert logic 1 (+ 3.3V) and logic 0 (0V) into logic 1 (+ 28V) and logic 0 (0V).
The embodiment of the application also provides a WQAR functional test platform which comprises a computer and the discrete quantity conversion circuit; the computer and the discrete quantity conversion circuit are connected through a PCIE board card.
As shown in FIG. 2, WQAR is connected to the computer through discrete quantity conversion circuitry during use; and the computer is connected through PCIE. The PCIE board is controlled by the computer through LabVIEW software programming to send ARINC717, ARINC429 and discrete amount format messages, so that the aim of WQAR function test is fulfilled.
The front panel is designed through LabVIEW software, and ARINC717, ARINC429 and related parameters of discrete messages can be configured through the front panel to control the sending process.
The test platform designed ARINC717 messaging flow, ARINC429 messaging flow, and configuration discrete volume message registers. ARINC717 message design is achieved by assigning values to two fabrics through two for loops when designing ARINC717 data frames.
In the above embodiment, the PCIE board card adopted is a micro-cav_a429_pcie board card.
In the present application, a specific LabVIEW software programming control method is common knowledge in the art.
The present utility model is not limited to the above embodiments, but is capable of modification and variation in detail, and other modifications and variations can be made by those skilled in the art without departing from the scope of the present utility model.
Claims (2)
1. The discrete quantity conversion circuit is characterized by comprising a first resistor, a second resistor, a third resistor, a fourth resistor, a first NPN triode, a second NPN triode and a voltage stabilizing diode; one end of the first resistor is an input interface, and the other end of the first resistor is connected with the base electrode of the first NPN triode and one end of the second resistor; the other end of the second resistor is connected with the emitter of the first NPN triode, the emitter of the second NPN triode and the anode of the voltage stabilizing diode and is grounded; one end of the third resistor is connected with a 3.3V power supply, and the other end of the third resistor is connected with the collector electrode of the first NPN triode and the base electrode of the second NPN triode; one end of the fourth resistor is connected with a 28V power supply, and the other end of the fourth resistor is connected with a collector electrode of the second NPN triode and a negative electrode of the voltage stabilizing diode and is used as an output interface.
2. A functional test platform of WQAR comprising a computer and the discrete quantity conversion circuit of claim 1;
and the input interface is connected with an output port of the PCIE board card and is connected with a computer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322629910.3U CN220796304U (en) | 2023-09-27 | 2023-09-27 | Discrete quantity conversion circuit and WQAR's functional test platform |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322629910.3U CN220796304U (en) | 2023-09-27 | 2023-09-27 | Discrete quantity conversion circuit and WQAR's functional test platform |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220796304U true CN220796304U (en) | 2024-04-16 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202322629910.3U Active CN220796304U (en) | 2023-09-27 | 2023-09-27 | Discrete quantity conversion circuit and WQAR's functional test platform |
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| Country | Link |
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| CN (1) | CN220796304U (en) |
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2023
- 2023-09-27 CN CN202322629910.3U patent/CN220796304U/en active Active
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