Digital quantity interface board detection device of certain type of air data computer
By designing an independent testing device that integrates components such as an industrial control computer, discrete I/O modules, and adapter boards, the problems of long repair cycles and high costs in testing airborne digital interface boards have been solved, enabling rapid fault location and diagnosis and improving maintenance efficiency.
Patent Information
- Application Number
- CN202520322081.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-27
- Publication Date
- 2026-01-09
- Estimated Expiration
- 2035-02-27
AI Technical Summary
In the existing technology, the testing of airborne digital interface boards requires the use of the entire equipment, which results in long repair cycles, high costs and low work efficiency.
A testing device was designed, comprising an industrial control computer, discrete I/O modules, an ARINC429 bus interface module, a programmable power supply, and an adapter board. It can independently perform testing and fault diagnosis of digital interface boards and integrates a data acquisition module, a matrix switch module, an oscilloscope module, and a high-speed digital I/O module to achieve rapid fault location.
It enables performance testing and rapid fault location of digital interface boards, is easy to operate, and displays fault diagnosis information in report form, which shortens troubleshooting time and improves maintenance efficiency.
Smart Images
Figure CN223784446U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of airborne circuit board testing technology, specifically a testing device for an air data computer digital interface board of a certain aircraft model. Background Technology
[0002] The main function of the digital interface board is to realize the ARINC429 bus signals of multiple atmospheric data sensors and extreme computers, and convert them into parallel digital signals. Its main functions are as follows: (1) buffer drive circuit (2) GAL address decoding circuit (3) multiple ARINC429 serial communication input and output interface.
[0003] The current testing of this circuit board is performed along with the entire aircraft using dedicated airborne testing equipment. When a module malfunctions, a corresponding adapter needs to be fabricated and used in conjunction with the existing product for testing. This requires setting up a simple discrete instrument testing platform consisting of an oscilloscope, multimeter, and logic analyzer. However, this conventional testing method suffers from long repair cycles, high costs, and low efficiency. Therefore, this paper proposes a testing device for the digital interface board of an airborne data computer for a specific aircraft model. This device allows for independent testing and fault diagnosis, separate from the entire airborne equipment, thereby effectively reducing costs. Utility Model Content
[0004] To address the aforementioned technical problems, this utility model proposes a detection device for a certain model of atmospheric data computer digital interface board.
[0005] The technical problem to be solved by this utility model is achieved by the following technical solution:
[0006] A device for detecting the digital interface board of an air data computer for a certain aircraft model includes:
[0007] Industrial control computers are responsible for controlling and displaying parameters of various hardware resources.
[0008] Discrete I / O module, connected to industrial control computer, used to send address decoding signals and data signals to the digital interface board under test;
[0009] The ARINC429 bus interface module connects to an industrial computer and is used for 429 signal transmission and reception.
[0010] A programmable power supply, connected to an industrial computer, is used to provide power for testing.
[0011] The adapter board connects to the discrete I / O module, the ARINC429 bus interface module, the programmable power supply, and the digital quantity interface board under test, respectively.
[0012] As a further improvement of this utility model, the industrial control computer is connected to a data acquisition module, a matrix switch module, an oscilloscope module, and a high-speed digital I / O module.
[0013] As a further improvement of this utility model, the industrial control computer is connected to a screen, keyboard, and mouse.
[0014] As a further improvement of this utility model, the adapter board includes a common test signal adapter interface for connecting to the data acquisition module, matrix switch module, oscilloscope module, high-speed digital I / O module, and programmable power supply.
[0015] As a further improvement of this utility model, the adapter board includes a discrete IO module interface connected to a discrete IO module, an ARINC429 bus interface module interface connected to an ARINC429 bus interface module, and a test board interface connected to a digital quantity interface board under test.
[0016] As a further improvement of this utility model, the adapter board includes a power indicator circuit.
[0017] The beneficial effects of this utility model are:
[0018] This utility model provides a testing device for a certain model of atmospheric data computer digital interface board, which can realize performance testing and rapid fault location of digital interface board. It is simple to operate, and the fault diagnosis information is displayed in the form of reports, which is easy to repair and troubleshoot, and greatly shortens the troubleshooting time. It can also promptly plug potential fault hazards in the routine board process testing, and improve the repair quality of products. Attached Figure Description
[0019] The present invention will be further described below with reference to the accompanying drawings and embodiments:
[0020] Figure 1 This is a structural block diagram of the present invention;
[0021] Figure 2 This is a structural block diagram of the adapter plate in this utility model. Detailed Implementation
[0022] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the utility model will be further described below in conjunction with the accompanying drawings and embodiments.
[0023] like Figure 1 As shown, a detection device for a certain model of atmospheric data computer digital interface board includes an adapter board, an industrial control computer, a data acquisition module connected to the industrial control computer, a matrix switch module, an oscilloscope module, a high-speed digital IO module, a programmable power supply, a discrete IO module, an ARINC429 bus interface module, and a screen, keyboard, and mouse.
[0024] The industrial control computer serves as the host computer for the testing device, responsible for controlling and displaying the parameters of various hardware resources. The programmable power supply, controlled by the industrial control computer, provides power for the test. The matrix switch module is used for switching the input / output ARINC429 bus signal transmission lines during the test. There are two matrix switches, each with 8 columns x 32 rows. The oscilloscope module measures the output signals of the digital interface board under test. The high-speed digital I / O module receives parallel data output from the port. The discrete I / O module sends address decoding signals and data signals to the digital interface board under test. The ARINC429 bus interface module is used for 429 signal transmission and reception. The screen, keyboard, and mouse provide human-machine interface operation ports such as a screen, keyboard, and mouse.
[0025] The adapter board is as follows Figure 2 As shown, it includes a common test signal adapter interface, a discrete I / O module interface, an ARINC429 bus interface module interface, a board under test interface, and a power indicator circuit.
[0026] The data acquisition module, matrix switch module, oscilloscope module, high-speed digital I / O module, and programmable power supply are respectively connected to the common test signal adapter interface. The discrete I / O module is connected to the discrete I / O module interface, and the ARINC429 bus interface module is connected to the ARINC429 bus interface module interface.
[0027] Working principle and usage process of this utility model:
[0028] In use, connect the data acquisition module, matrix switch module, oscilloscope module, high-speed digital I / O module, and programmable power supply in this device to the common test signal adapter interface of the adapter board via plugs. Connect the discrete I / O module and ARINC429 bus interface module to the corresponding discrete I / O module interface and ARINC429 bus interface module interface via corresponding adapter cables. Connect the digital interface board under test to the interface of the board under test to perform the test.
[0029] Specific testing process:
[0030] ARINC429 functional circuit test:
[0031] A reset signal is sent via port XP04 / A05 to reset the protocol chip. The chip is then put into normal operating mode by writing control word 0020H to the HS1-3282 register address. A chip select signal (active low) is sent via port XP04 / C06. Write signals (IORD / high, IOWT / low) are sent via ports XP04 / A06 and XP04 / A07, as shown in Table 1. Corresponding address decoding signals are sent via the ports to generate the D6 transmit control signals (PL1, PL2, ENTX), controlling its transmission of the 429 signal. This signal is output via ports XP04 / B36 and XP04 / B37. The output signal is then connected to oscilloscope channels 1 and 2 via an AMC2623D-1 matrix switch for display and received via the ARINC429 bus interface module. The received 429 data signal is compared with the theoretical data result for judgment and uploaded to a report.
[0032] ARINC429 receiver function circuit test:
[0033] The ARINC429 bus interface module's channels 1 and 2 are switched via a matrix switch module to ports XP04 / A30, XP04 / A31, XP04 / C30, and XP04 / C31 to send 429 signals, as shown in Table 1. The corresponding address decoding signals are sent through the ports to generate the receive control signals (EN1, EN2, SEL) for D6. Ports XP04 / A06 and XP04 / A07 send read signals (IORD / low level, IOWT / low level). The data signals are output from the buffer drive circuit to the ports and received by the high-speed digital IO module. The collected data signals are compared with the theoretical data results for judgment and uploaded to the report.
[0034] Table 1. Address and Transceiver Control Signal Correspondence Table
[0035]
[0036] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.
Claims
1. A detection device for a certain model of atmospheric data computer digital interface board, characterized in that: include: Industrial control computers are responsible for controlling and displaying parameters of various hardware resources. Discrete I / O module, connected to industrial control computer, used to send address decoding signals and data signals to the digital interface board under test; The ARINC429 bus interface module connects to an industrial computer and is used for 429 signal transmission and reception. A programmable power supply, connected to an industrial computer, is used to provide power for testing. The adapter board connects to the discrete I / O module, the ARINC429 bus interface module, the programmable power supply, and the digital quantity interface board under test, respectively.
2. The detection device for a certain type of aircraft's atmospheric data computer digital interface board according to claim 1, characterized in that: The industrial computer is connected to a data acquisition module, a matrix switch module, an oscilloscope module, and a high-speed digital I / O module.
3. The detection device for a certain type of aircraft's atmospheric data computer digital interface board according to claim 2, characterized in that: The industrial computer is connected to a screen, keyboard, and mouse.
4. The detection device for a certain type of aircraft's atmospheric data computer digital interface board according to claim 2, characterized in that: The adapter board includes a common test signal adapter interface for connecting to the data acquisition module, matrix switch module, oscilloscope module, high-speed digital I / O module, and programmable power supply.
5. The detection device for a certain type of aircraft's atmospheric data computer digital interface board according to claim 1, characterized in that: The adapter board includes a discrete I / O module interface for connecting to a discrete I / O module, an ARINC429 bus interface module interface for connecting to an ARINC429 bus interface module, and a test board interface for connecting to a digital quantity under test interface board.
6. The detection device for a certain type of aircraft's atmospheric data computer digital interface board according to claim 1, characterized in that: The adapter board includes a power indicator circuit.