An airborne EAP test bench
By designing an airborne EAP test bench that integrates various circuit boards and interfaces, the problem of low testing efficiency in existing technologies has been solved, enabling unified and efficient testing of airborne EAP equipment.
Patent Information
- Application Number
- CN202422957014.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-02
- Publication Date
- 2025-11-28
- Estimated Expiration
- 2034-12-02
AI Technical Summary
In the existing technology, the testing process of airborne EAP equipment is inefficient and fragmented, making it difficult to conduct unified and efficient testing of various aspects.
Design an airborne EAP test bench, including front and rear plug-in cards, and built-in bus circuit board, DC signal resistor bridge circuit board, analog signal circuit board, discrete signal circuit board, power supply and data loading circuit board, distributed unit circuit board, etc. By flexibly combining these circuit boards and interfaces, unified and efficient testing of airborne EAP devices can be achieved.
By integrating different test circuit boards and interfaces in a flexible combination, accurate and efficient testing of airborne EAP equipment was achieved, improving testing efficiency.
Smart Images
Figure CN223611629U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model belongs to the technical field of airborne EAP test, and relates to an airborne EAP test board. BACKGROUND
[0002] In order to guarantee the normal operation of the airborne EAP device, the airborne EAP device needs to be tested. In the process of testing the airborne EAP device, the signal transmission and reception of the airborne EAP device, the airborne EAP device related data monitoring, the airborne EAP device current and voltage monitoring and many other aspects need to be tested. In the prior art, different test requirements are usually detected by separate corresponding detection devices, which makes it difficult to test all aspects of the airborne EAP device test in the prior art.
[0003] Therefore, in view of the low test efficiency and test dispersion in the existing airborne EAP device test process, the utility model discloses a kind of airborne EAP test board. UTILITY MODEL CONTENT
[0004] The utility model aims at providing a kind of airborne EAP test board, can be unified efficiently to the various test requirements of airborne EAP device and test, improve the test efficiency of airborne EAP device.
[0005] The utility model realizes by the following technical scheme:
[0006] A kind of airborne EAP test board, including test box body, the test box body includes the front plug-in card and rear plug-in card of connection, power module is provided on the front plug-in card, bus circuit board, direct current signal resistance bridge circuit board, analog signal circuit board, discrete quantity signal circuit board, power and data loading circuit board, distributed unit circuit board are provided on the rear plug-in card, the bus circuit board, direct current signal resistance bridge circuit board, analog signal circuit board, discrete quantity signal circuit board, power and data loading circuit board, distributed unit circuit board are connected with panel socket, the distributed unit circuit board is also connected with DU socket.
[0007] The power module is connected with the power supply of the workshop, and is used for providing power supply for each circuit board; the rear plug-in card is provided with a bus circuit board, a direct current signal resistance bridge circuit board, an analog signal circuit board, a discrete quantity signal circuit board, a power supply and data loading circuit board and a distributed unit circuit board; the bus circuit board is used for connecting with the airborne EAP to perform bus return test; the direct current signal resistance bridge circuit board is provided with an external interface for providing analog voltage signal and analog resistance signal; the analog signal circuit board is used for realizing analog of speed, synchronization signal, fuel quantity, fuel temperature, exhaust temperature and other signals of the airborne EAP; the discrete quantity signal circuit board is used for outputting discrete quantity signals; the power supply and data loading circuit board is used for controlling power supply of the airborne EAP and simulating PDL to load configuration data of the airborne EAP; and the distributed unit circuit board is used for controlling connection between video signals of the airborne EAP and upper and lower DUs.
[0008] In order to better realize the utility model, further, the front plug-in card and the rear plug-in card are provided with a bottom plate, the front plug-in card is connected with the front end interface of the bottom plate, and the rear plug-in card is connected with the rear end interface of the bottom plate.
[0009] In order to better realize the utility model, further, the front end interface of the bottom plate is also connected with a computer interface extension plate.
[0010] In order to better realize the utility model, further, the front end of the power module is provided with a plug interface and a computer interface, the plug interface is connected with a power plug, and the computer interface is connected with an integrated computer.
[0011] In order to better realize the utility model, further, the distributed unit circuit board is provided with a first DU interface and a second DU interface, the first DU interface is connected with a rear panel socket, and the second DU interface is connected with a DU socket.
[0012] In order to better realize the utility model, further, the DU socket comprises a superior DU socket and an inferior DU socket, and the second DU interface is connected with the superior DU socket and the inferior DU socket respectively.
[0013] In order to better realize the utility model, further, the panel socket comprises a rear panel socket and a front panel socket, the bus circuit board, the direct current signal resistance bridge circuit board, the analog signal circuit board, the discrete quantity signal circuit board, the power supply and data loading circuit board and the distributed unit circuit board are connected with the rear panel socket, and the power supply and data loading circuit board is also connected with the front panel socket.
[0014] In order to better realize the utility model, further, the power supply and data loading circuit board comprises a power supply loading interface and a data loading interface, the power supply loading interface is connected with the rear panel socket, and the data loading interface is connected with the front panel socket.
[0015] In order to better realize the utility model, further, the discrete quantity signal circuit board includes the first discrete quantity signal circuit board, the second discrete quantity signal circuit board, the third discrete quantity signal circuit board, the fourth discrete quantity signal circuit board, the fifth discrete quantity signal circuit board arranged on the rear card, the first discrete quantity signal circuit board, the second discrete quantity signal circuit board, the third discrete quantity signal circuit board, the fourth discrete quantity signal circuit board, the fifth discrete quantity signal circuit board are same in structure, the first discrete quantity signal circuit board, the second discrete quantity signal circuit board, the third discrete quantity signal circuit board, the fourth discrete quantity signal circuit board, the fifth discrete quantity signal circuit board are connected with the rear panel socket.
[0016] Compared with the prior art, the utility model has the following advantages and beneficial effects:
[0017] The utility model discloses a different test circuit board, interface is built in according to the different test demand of airborne EAP equipment in airborne EAP test platform, and the flexible selection combination use of different test circuit board, interface of the whole setting airborne EAP test platform can accurately and efficiently test airborne EAP equipment with external detection equipment, effectively improve the test efficiency of airborne EAP equipment. BRIEF DESCRIPTION OF DRAWINGS
[0018] Figure 1 It is the schematic diagram of front card;
[0019] Figure 2 It is the schematic diagram of rear card;
[0020] Figure 3 It is the schematic diagram of the module connection of airborne EAP test platform;
[0021] Figure 4 It is the circuit schematic diagram of the first chip in bus circuit board;
[0022] Figure 5 It is the circuit schematic diagram of the second chip in bus circuit board;
[0023] Figure 6 It is the schematic diagram of sending circuit in bus circuit board;
[0024] Figure 7 It is the circuit schematic diagram of chip in DC signal resistance bridge circuit board;
[0025] Figure 8 It is the schematic diagram of signal output circuit in DC signal resistance bridge circuit board;
[0026] Figure 9 It is the schematic diagram of engine speed circuit in analog signal circuit board;
[0027] Figure 10 Schematic diagram of fuel quantity circuit in analog signal circuit board;
[0028] Figure 11 Schematic diagram of AC voltage frequency circuit in analog signal circuit board;
[0029] Figure 12 Schematic diagram of synchronization signal circuit in analog signal circuit board;
[0030] Figure 13 Schematic diagram of fuel temperature circuit and potentiometer signal circuit in analog signal circuit board;
[0031] Figure 14 Schematic diagram of exhaust gas temperature circuit in analog signal circuit board;
[0032] Figure 15 Schematic diagram of AC voltage circuit in analog signal circuit board;
[0033] Figure 16 Schematic diagram of DC differential voltage circuit in analog signal circuit board. DETAILED DESCRIPTION
[0034] The following detailed description is exemplary in nature and is intended to provide further description of the present application. Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which the application belongs.
[0035] It is to be understood that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments in accordance with the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It will be further understood that the terms "comprises" and / or "comprising," when used in this specification, specify the presence of stated features, steps, operations, elements, and / or components, but do not preclude the presence or addition of one or more other features, steps, operations, elements, components, and / or groups thereof.
[0036] For the convenience of description, if "up", "down", "left" and "right" are appeared in the present application, it only means the same direction as the up, down, left and right direction of the drawing itself, and does not limit the structure, and is only for the convenience of describing the present application and simplifying the description, and is not intended to indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application.
[0037] Terminology Explanation: The terms "installation," "connection," "linking," and "fixing" in this utility model should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal connection of two components or the interaction relationship between two components. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances.
[0038] Example 1:
[0039] This embodiment provides an airborne EAP test bench, such as... Figures 1-3 As shown, the test chamber includes a front plug-in card 1 and a rear plug-in card 2 connected together. The front plug-in card 1 is equipped with a power module 11, and the rear plug-in card 2 is equipped with a bus circuit board 3, a DC signal resistor bridge circuit board 4, an analog signal circuit board 5, a discrete signal circuit board 6, a power and data loading circuit board 7, and a distributed unit circuit board 8. The bus circuit board 3, DC signal resistor bridge circuit board 4, analog signal circuit board 5, discrete signal circuit board 6, power and data loading circuit board 7, and distributed unit circuit board 8 are all connected to a panel socket, and the distributed unit circuit board 8 is also connected to a DU socket.
[0040] like Figures 1-3 As shown, a power module 11 is provided on the panel of the front insert card 1. The power module 11 includes a workshop power input socket, through which a workshop power supply can be easily connected to supply power to the entire airborne EAP test bench. The power module 11 also includes a power switch on the panel of the front insert card 1, which controls the on / off state of the power module 11.
[0041] like Figure 1 and Figure 3 As shown, the rear insert card 2 is sequentially equipped with a bus circuit board 3, a DC signal resistor bridge circuit board 4, an analog signal circuit board 5, a discrete signal circuit board 6, a power supply and data loading circuit board 7, and a distributed unit circuit board 8.
[0042] like Figures 4-6 As shown, the bus circuit board 3 includes return test ports providing 24 ARINC429 transmit buses and 5 ARINC429 receive buses. The bus circuit board 3 is inserted into the rear insert card 2 via socket J2, and connected to the onboard EAP device via socket J3. The bus circuit board 3 includes a first chip U1A, a second chip U1B, and a transmitting circuit. Both chips U1A and U1B are STM32F446ZET6. Chip U1A has a programming interface J1, and the transmitting circuit is connected to chip U1B.
[0043] As shown in Figure 7 and Figure 8 , the direct current signal resistance bridge circuit board 4 includes chip U102, model: MCP4441-103E / ST. The direct current signal resistance bridge circuit board 4 is used to output 40 analog voltage signals and 12 analog resistance signals, and is inserted into the rear plug-in card 2 through the socket and connected to the airborne EAP device through the socket J4.
[0044] The analog signal circuit board 5 is provided with engine speed circuit, fuel oil volume circuit, alternating voltage frequency circuit, synchronization signal circuit, fuel temperature circuit, exhaust temperature circuit, alternating voltage circuit, direct current differential voltage circuit, and potentiometer signal circuit.
[0045] As shown in Figure 9 , the engine speed circuit includes chip U100, model: AM26LS31; as shown in Figure 10 , the fuel oil volume circuit; as shown in Figure 11 , the alternating voltage frequency circuit; as shown in Figure 12 , the synchronization signal circuit; as shown in Figure 13 , the fuel temperature circuit and the potentiometer signal circuit; as shown in Figure 14 , the exhaust temperature circuit includes chip U204, model: MCP4728.
[0046] The discrete quantity signal circuit board 6 is used to output GND / OPEN discrete quantity signal and 28V / OPEN discrete quantity signal.
[0047] The power supply and data loading circuit board 7 includes power supply interface and transceiver bus. The power supply interface is connected to the airborne EAP device for power supply control, and the transceiver bus is used for loading configuration data of the analog PDL to the airborne EAP device.
[0048] The distributed unit circuit board 8 includes DU interface, which is connected to the airborne EAP device through the DU interface to realize brightness control of the DU.
[0049] Further, the front plug-in card 1 and the rear plug-in card 2 are provided with a bottom plate 13, the front end interface of the front plug-in card 1 is connected to the bottom plate 13, and the rear end interface of the rear plug-in card 2 is connected to the bottom plate 13.
[0050] Further, the front end interface of the bottom plate 13 is further connected with a computer interface extension board 12, and the computer interface extension board 12 is provided with a computer interface for external computer.
[0051] Further, the front end of the power supply module 11 is provided with a plug interface and a computer interface, the plug interface is connected with a power plug, and the computer interface is connected with an integrated computer.
[0052] Embodiment 2
[0053] An airborne EAP testboard is improved based on Embodiment 1, wherein the distributed unit circuit board 8 is provided with a first DU interface and a second DU interface, the first DU interface is connected with the rear panel socket 9, and the second DU interface is connected with a DU socket. The DU socket includes a superior DU socket 1 and an inferior DU socket 2, and the second DU interface is connected with the superior DU socket 1 and the inferior DU socket 2 respectively.
[0054] The superior DU socket 1 is connected with a superior DU, and the inferior DU socket 2 is connected with an inferior DU, so as to control the connection between the airborne EAP video signal and the superior and inferior DUs, and to control the brightness of the DU.
[0055] The other parts of this embodiment are the same as those of Embodiment 1, and thus will not be described again.
[0056] Embodiment 3
[0057] An airborne EAP testboard is improved based on Embodiment 1 or 2, wherein the panel socket includes a rear panel socket 9 and a front panel socket 10, the bus circuit board 3, the direct current signal resistance bridge circuit board 4, the analog signal circuit board 5, the discrete quantity signal circuit board 6, the power supply and data loading circuit board 7, and the distributed unit circuit board 8 are connected with the rear panel socket 9, and the power supply and data loading circuit board 7 is further connected with the front panel socket 10. The power supply and data loading circuit board 7 includes a power supply loading interface 71 and a data loading interface 72, the power supply loading interface 71 is connected with the rear panel socket 9, and the data loading interface 72 is connected with the front panel socket 10.
[0058] The power supply loading interface 71 is connected with the rear panel socket 9, the airborne EAP device is connected with the rear panel socket 9, and thus the power supply to the airborne EAP device is controlled. The data loading interface 72 is connected with an ARINC receiving bus and an ARINC sending bus, and thus the analog PDL loads the configuration data of the airborne EAP device.
[0059] The other parts of this embodiment are the same as those of Embodiment 1 or 2, and thus will not be described again.
[0060] Embodiment 4
[0061] An oxygen sensor test system is implemented based on the oxygen sensor test device of any one of embodiments 1-3, the discrete quantity signal circuit board 6 includes a first discrete quantity signal circuit board 61, a second discrete quantity signal circuit board 62, a third discrete quantity signal circuit board 63, a fourth discrete quantity signal circuit board 64, and a fifth discrete quantity signal circuit board 65 arranged on the rear plug-in card 2, the first discrete quantity signal circuit board 61, the second discrete quantity signal circuit board 62, the third discrete quantity signal circuit board 63, the fourth discrete quantity signal circuit board 64, and the fifth discrete quantity signal circuit board 65 are the same in structure, and the first discrete quantity signal circuit board 61, the second discrete quantity signal circuit board 62, the third discrete quantity signal circuit board 63, the fourth discrete quantity signal circuit board 64, and the fifth discrete quantity signal circuit board 65 are connected with the rear panel socket 9.
[0062] Taking the first discrete quantity signal circuit board 61 as an example, the first discrete quantity signal circuit board 61 includes a single-chip microcomputer, the single-chip microcomputer is of an STM32F446-144 model, the single-chip microcomputer outputs 89 GND / OPEN discrete quantity output ends and 7 28V / OPEN output ends, and a total of 96 discrete quantity signals are output.
[0063] The other parts of the embodiment are the same as those of any one of embodiments 1-3, and thus will not be described herein.
[0064] The above is only a preferred embodiment of the utility model, and does not limit the utility model in any form, and any simple modification or equivalent change according to the technical essence of the utility model falls within the protection scope of the utility model.
Claims
1. An airborne EAP test bench comprising a test box, characterized in that, The test box comprises a front plug-in card (1) and a rear plug-in card (2) connected, the front plug-in card (1) is provided with a power module (11), the rear plug-in card (2) is provided with a bus circuit board (3), a direct current signal resistance bridge circuit board (4), an analog signal circuit board (5), a discrete quantity signal circuit board (6), a power supply and data loading circuit board (7) and a distributed unit circuit board (8), the bus circuit board (3), the direct current signal resistance bridge circuit board (4), the analog signal circuit board (5), the discrete quantity signal circuit board (6), the power supply and data loading circuit board (7) and the distributed unit circuit board (8) are connected with a panel socket, and the distributed unit circuit board (8) is further connected with a DU socket.
2. The airborne EAP test bench of claim 1, wherein, The front plug-in card (1) and the rear plug-in card (2) are provided with a bottom plate (13), the front plug-in card (1) is connected with the front end interface of the bottom plate (13), and the rear plug-in card (2) is connected with the rear end interface of the bottom plate (13).
3. An airborne EAP test bench according to claim 2, wherein, The front end interface of the bottom plate (13) is further connected with a computer interface extension plate (12).
4. The airborne EAP test bench of claim 2, wherein, The front end of the power module (11) is provided with a plug interface and a computer interface, the plug interface is connected with a power plug, and the computer interface is connected with an integrated computer.
5. An airborne EAP test bench according to any one of claims 1 to 4, characterised in that, The distributed unit circuit board (8) is provided with a first DU interface and a second DU interface, the first DU interface is connected with a rear panel socket (9), and the second DU interface is connected with a DU socket.
6. An airborne EAP test bench according to claim 5, wherein, The DU socket comprises a superior DU socket (111) and an inferior DU socket (112), and the second DU interface is connected with the superior DU socket (111) and the inferior DU socket (112) respectively.
7. An airborne EAP test bench according to any one of claims 1 to 4, characterised in that, The panel socket comprises a rear panel socket (9) and a front panel socket (10), the bus circuit board (3), the direct current signal resistance bridge circuit board (4), the analog signal circuit board (5), the discrete quantity signal circuit board (6), the power supply and data loading circuit board (7) and the distributed unit circuit board (8) are connected with the rear panel socket (9), and the power supply and data loading circuit board (7) is further connected with the front panel socket (10).
8. An airborne EAP test bench according to claim 7, wherein, The power supply and data loading circuit board (7) comprises a power loading interface (71) and a data loading interface (72), the power loading interface (71) is connected with the rear panel socket (9), and the data loading interface (72) is connected with the front panel socket (10).
9. An airborne EAP test bench according to any one of claims 1 to 4, wherein, The discrete quantity signal circuit board (6) comprises a first discrete quantity signal circuit board (61), a second discrete quantity signal circuit board (62), a third discrete quantity signal circuit board (63), a fourth discrete quantity signal circuit board (64) and a fifth discrete quantity signal circuit board (65) arranged on the rear plug-in card (2), the first discrete quantity signal circuit board (61), the second discrete quantity signal circuit board (62), the third discrete quantity signal circuit board (63), the fourth discrete quantity signal circuit board (64) and the fifth discrete quantity signal circuit board (65) are identical in structure, and the first discrete quantity signal circuit board (61), the second discrete quantity signal circuit board (62), the third discrete quantity signal circuit board (63), the fourth discrete quantity signal circuit board (64) and the fifth discrete quantity signal circuit board (65) are connected with the rear panel socket (9).