Aeronautical communication equipment data exchange network module tester

Abstract

The invention relates to the technical field of aeronautical communication testing, and provides an aeronautical communication equipment data exchange network module tester comprising a programmed switch module used for receiving a switch switching instruction, a switch signal and a test instruction sent by a computer module, switching a radio frequency interface and a dial switch interface of the tested aeronautical communication equipment data exchange network module according to the switch switching instruction, connecting the radio frequency interface or the dial switch interface to a bit error tester, and controlling the state of the tested aeronautical communication equipment data exchange network module through a switch signal; and the computer module is used for sending a switch switching instruction and a switch signal to the programmed switch module, sending network configuration command data to the tested aeronautical communication equipment data exchange network module, connecting the bit error tester, sending a test instruction to the bit error tester and receiving a test result of the bit error tester. According to the invention, the aviation communication equipment data exchange network module can be automatically tested.

Description

Technical Field

[0001] The present invention relates to the technical field of aviation communication testing, and in particular to a tester for a data exchange network module of aviation communication equipment. Background Art

[0002] With the rapid development of modern science and technology, a large number of high-tech achievements have been applied to aviation communication equipment. Aviation communication systems are inevitably developing in the direction of integration, generalization, and modularization in terms of implementation methods. Their structures are becoming more and more complex, their functions are becoming more and more complete, and their automation levels are becoming higher and higher. At the same time, aviation communication equipment has higher and higher requirements for airworthiness and safety.

[0003] Testing is to use the excitation signal source product to generate an excitation signal, and after product processing, output the measured signal to the test signal analysis instrument to check whether its signal indicators meet the design requirements. Electronic information equipment testing runs through the entire electronic product manufacturing process. Electronic information equipment has multiple systems that integrate functions and performance, and has complex cross-linking relationships. In order to facilitate functional division and organize production, electronic information equipment is physically divided into module level, whole machine level and system level. Its design and manufacturing process is also the process of equipment performance formation. Affected by the dynamics of circuit design, the discreteness of device performance parameters, and the deviation of product indicators caused by assembly errors and other factors, testing is required to meet the performance indicators of electronic information equipment. Testing has become an important link in the manufacturing process of electronic information equipment. Testing is the key to ensuring the functional performance of products.

[0004] The testing of electronic information equipment involves many technical and tactical indicators. With the increasing complexity of the equipment and the improvement of performance requirements, the testing process is becoming more and more complicated. It is a relatively complex and multi-step process. There are a lot of product debugging tests and verification tests in the production process, especially high and low temperature tests, stress screening, environmental tests, electrical aging tests, etc., which may last for several days. Before the product enters the next process from the previous process, it must undergo strict performance index tests to ensure the product's qualification. From the perspective of the testing process, repeated index tests are required in the stages of normal temperature debugging, environmental testing and acceptance to eliminate faulty products.

[0005] The data exchange network module is a digital exchange matrix built for the purpose of completing the multi-point to multi-point full exchange of serial digital signals. Its performance and reliability directly affect the transmission of signals and the normal operation of the system. The test function indicators of the data exchange network module mainly include self-test function, information return function, matrix exchange function, main and standby exchange network switching, etc. The performance indicators mainly include power consumption, bit error rate, etc. At present, the manual test mode is adopted. The operator needs to operate the code switch switching, RF interface switching, CAN bus data entry and bit error meter, etc. The operation is cumbersome. Since there are many indicators to be tested for the product, it takes a lot of time to set the instrument parameters, and each indicator needs to be tested repeatedly. Therefore, the test efficiency is low. At the same time, the test time of different functions and performance indicators is different. After each indicator is tested, the next indicator test parameters are set immediately. The operator needs to concentrate all the time and work for a long time, which consumes a lot of energy and physical strength of the operator, resulting in high labor intensity for the operator and prone to mismeasurement and missed measurement. Summary of the invention

[0006] In view of the above-mentioned problems, the present invention aims to provide an aviation communication equipment data exchange network module tester, which can automatically test the aviation communication equipment data exchange network module.

[0007] The present invention provides an aviation communication equipment data exchange network module tester, comprising:

[0008] A program-controlled switch module, used for receiving a switch switching instruction, a switch signal and a test instruction sent by the computer module, switching the radio frequency interface and the dip switch interface of the data exchange network module of the aviation communication equipment under test according to the switch switching instruction, connecting the radio frequency interface or the dip switch interface to the bit error tester, and controlling the state of the data exchange network module of the aviation communication equipment under test through the switch signal;

[0009] The computer module is used to send switch switching instructions and switch signals to the programmable switch module, send network configuration command data to the data exchange network module of the tested aviation communication equipment, and connect to the bit error meter and send test instructions to the bit error meter and receive the test results of the bit error meter.

[0010] In some embodiments, the programmable switch module includes:

[0011] A drive interface is used to realize signal transmission between the computer module and the program-controlled switch module;

[0012] A radio frequency relay group is used to connect the radio frequency interface of the data exchange network module of the aviation communication equipment to the bit error meter under the control of the control unit;

[0013] A low-frequency relay group is used to connect the DIP switch interface of the data exchange network module of the aviation communication equipment to the bit error meter under the control of the control unit;

[0014] The control unit is used to switch the radio frequency interface and the dip switch interface of the aviation communication equipment data exchange network module according to the switch switching instruction, and to control the state of the aviation communication equipment data exchange network module through the switch signal.

[0015] In some embodiments, the RF relay group is unified into a common RF interface through the definition of the relay switching module interface.

[0016] In some embodiments, the drive interface is connected to the computer module via a serial port.

[0017] In some embodiments, the serial port includes a serial port receiving module, a serial port sending module and a serial port protocol processing module.

[0018] In some embodiments, the corresponding functions are realized by installing test software in the computer module.

[0019] In some embodiments, the testing software includes:

[0020] User interface, used to provide a user interaction interface to enable users to perform related operations on the test;

[0021] User login module, used to input user name and password, and enter the test software after verification;

[0022] System setting module, used for system setting;

[0023] Automatic test module, used to automatically test all functions and performance indicators of the data exchange network module of the aviation communication equipment under test by sending test instructions;

[0024] A test result processing module is used to process the test results;

[0025] The underlying driver, including the instrument driver and serial port communication protocol, is used to realize the drive and communication with the programmable switch module, bit error tester and the data exchange network module of the aviation communication equipment under test.

[0026] In some embodiments, the system configuration includes:

[0027] Select module model: select the aviation communication equipment data exchange network module to be tested and load the corresponding test items;

[0028] Select test items: Test items are displayed in a tree structure, which is used to select single or multiple test items. After the test is started, the corresponding test program will be called through the automatic test module for testing;

[0029] Single setting: Single setting of the parameters and working mode of the bit error tester and the data exchange network module of the aviation communication equipment being tested.

[0030] In some embodiments, the automatic test includes automatic testing of a self-check function, an information feedback function, an uplink switching network, a downlink switching network, a loop self-check circuit, a primary-standby switching network switching, and / or a bit error rate.

[0031] In some embodiments, the processing of the test results includes displaying the test results, accessing the test results, printing the test results, and marking unqualified items.

[0032] In summary, due to the adoption of the above technical solution, the beneficial effects of the present invention are:

[0033] 1. The present invention can automatically test the data exchange network module of aviation communication equipment through the cooperation of the computer module and the program-controlled switch module.

[0034] 2. The computer module of the present invention communicates with the program-controlled switch module through a serial port. A CPLD chip can be used to realize serial port communication, complete communication protocol processing, and control the interface switching of the data exchange network module of the tested aviation communication equipment. Compared with serial port communication control boards such as single-chip microcomputers, this design is more concise. Since the CPLD has many pins, more than 80, there is no need to expand the logic device to increase the control port; and the CPLD pin function can be realized by software programming, so the wiring is simpler and more flexible.

[0035] 3. In the test software of the present invention, the test items of the automatic test can be stored as files and loaded by selecting the test items, which changes the way in which the test items in the traditional template are given by the software, improves the flexibility of the software, and is more suitable for the actual situation where there are multiple test requirements in multiple stages of equipment production. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] Figure 1 It is a structural schematic diagram of an aviation communication equipment data exchange network module tester in an embodiment of the present invention.

[0037] Figure 2 Schematic diagram of the functional structure of the test software in the computer module in an embodiment of the present invention. DETAILED DESCRIPTION

[0038] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings here can be arranged and designed in various different configurations.

[0039] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the invention claimed for protection, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0040] Example

[0041] See also Figure 1 This embodiment provides an aviation communication equipment data exchange network module tester, comprising:

[0042] A program-controlled switch module, used for receiving a switch switching instruction, a switch signal and a test instruction sent by the computer module, switching the radio frequency interface and the dip switch interface of the data exchange network module of the aviation communication equipment under test according to the switch switching instruction, connecting the radio frequency interface or the dip switch interface to the bit error tester, and controlling the state of the data exchange network module of the aviation communication equipment under test through the switch signal;

[0043] The computer module is used to send switch switching instructions and switch signals to the programmable switch module, send network configuration command data to the data exchange network module of the tested aviation communication equipment, and connect to the bit error meter and send test instructions to the bit error meter and receive the test results of the bit error meter.

[0044] In some embodiments, the programmable switch module includes:

[0045] The drive interface is used to realize signal transmission between the computer module and the program-controlled switch module, so that the control signal between the computer module and the program-controlled switch module is effectively and stably transmitted. Some implementation methods are that the transistor STS9013 can be selected, with a maximum current of 500mA.

[0046] The RF relay group is used to connect the RF interface of the data exchange network module of the aviation communication equipment to the bit error meter under the control of the control unit. The RF relay group is unified into a common RF interface through the definition of the relay switching module interface. Some implementation methods are that Panasonic TQ2-5V can be selected, the control voltage is 5V, and a 125V / 1A AC signal can be passed.

[0047] The low frequency relay group is used to connect the dip switch interface of the data exchange network module of the aviation communication equipment to the bit error meter under the control of the control unit. Some implementation methods are that Panasonic TX2-5V can be selected, the control voltage is 5V, and a 30V / 2A DC signal can be passed.

[0048] The control unit is used to switch the radio frequency interface and the dip switch interface of the aviation communication equipment data exchange network module according to the switch switching instruction, and control the state of the aviation communication equipment data exchange network module through the switch signal. In addition, under the control of the test instruction, the corresponding action can be completed to realize automatic testing.

[0049] In some embodiments, the drive interface is connected to the computer module via a serial port. In some implementations, the serial port can use the CPLD device XC95288XL-10PQ208 of Xilinx, which has 288 macro units and 166 IO ports, can complete the serial port communication and switch control functions with the computer, and has strong expansion capabilities. The CPLD is developed using AltiumDesigner9.4 of Altium, and the top layer is designed using a schematic diagram.

[0050] In some embodiments, the serial port designed in the schematic diagram is divided into three modules, a serial port receiving module, a serial port sending module and a serial port protocol processing module. The three modules are written in VHDL language.

[0051] The serial port receiving module converts the serial data into 8-bit parallel data. The main method is that the counter triggers the shift register to start the serial-to-parallel conversion according to the baud rate;

[0052] The serial port sending module sends the parallel data serially at the specified baud rate;

[0053] The serial port protocol processing module processes the frame protocol by byte, mainly using the design of the state machine, using the state value in conjunction with the receive byte counter and the send byte counter to complete the protocol processing and return.

[0054] In addition, the computer module and the bit error tester can be connected through the LAN port, and the computer module and the data exchange network module of the aviation communication equipment being tested can be connected through the USB-CAN bus.

[0055] In some embodiments, the computer module implements the corresponding functions by installing test software. Figure 2 The test software includes six functional modules: user interface, user login module, system setting module, automatic test module, test result processing module, and bottom-level driver module; the functions of each module are as follows:

[0056] The user interface is used to provide a user interaction interface to enable users to perform related operations on the test, including test script management, test execution, test result analysis and processing, etc., which can effectively operate and manage the test system.

[0057] The user login module is used to input the user name and password and enter the test software after verification.

[0058] The system setting module is used to perform system settings, including selecting module models, selecting test items, and single settings. Specifically:

[0059] Select module model: It can expand the test of various aviation communication equipment data exchange network modules. After selecting the aviation communication equipment data exchange network module to be tested, load the corresponding test items.

[0060] Select test items: Test items are displayed in a tree structure and are used to select single or multiple test items. After the test is started, the corresponding test program will be called through the automatic test module for testing.

[0061] Single setting: Single setting of the parameters and working mode of the bit error tester and the data exchange network module of the aviation communication equipment under test, which is convenient for debugging, fault diagnosis and manual testing.

[0062] The automatic test module is used to automatically test all functions and performance indicators of the data exchange network module of the tested aviation communication equipment by sending test instructions, including self-test function, information feedback function, uplink switching network, downlink switching network, loop self-test circuit, main-standby switching network switching and / or automatic test of bit error rate, set the working status of the radio frequency relay group and the low-frequency relay group through test instructions, set the working mode and status of the bit error meter, and test various indicators.

[0063] The test result processing module is used to process the test results, which is divided into test result display, test result access, test result printing, and unqualified item marking. Specifically:

[0064] Test result display: As the test progresses, the test results are displayed one by one in a table.

[0065] Test result storage and access: write test results to a file (such as a WORD file), or export test results from a file.

[0066] Test result printing: It has the function of testing result printing.

[0067] Marking of unqualified items: Compare the test results with the qualified criteria and mark the tested items and unqualified items in the test item table.

[0068] The bottom-level driver includes an instrument driver and a serial communication protocol, which are used to realize the drive and communication with the program-controlled switch module, the bit error meter and the data exchange network module of the aviation communication equipment being tested.

[0069] In some embodiments, the test software of the computer module can be developed based on the development software on the Windows operating system. The specific development software and operating system can be selected according to actual conditions, for example, based on the Windows XP operating system, developed using NI's LabWindows / CVI 9.0.

[0070] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. An aviation communication equipment data exchange network module tester, characterized in that: include: A program-controlled switch module, used for receiving a switch switching instruction, a switch signal and a test instruction sent by the computer module, switching the radio frequency interface and the dip switch interface of the data exchange network module of the aviation communication equipment under test according to the switch switching instruction, connecting the radio frequency interface or the dip switch interface to the bit error tester, and controlling the state of the data exchange network module of the aviation communication equipment under test through the switch signal; The computer module is used to send switch switching instructions and switch signals to the programmable switch module, send network configuration command data to the data exchange network module of the tested aviation communication equipment, and connect to the bit error meter and send test instructions to the bit error meter and receive the test results of the bit error meter.

2. The aviation communication equipment data exchange network module tester according to claim 1, characterized in that: The program-controlled switch module comprises: A drive interface is used to realize signal transmission between the computer module and the program-controlled switch module; A radio frequency relay group is used to connect the radio frequency interface of the data exchange network module of the aviation communication equipment to the bit error meter under the control of the control unit; A low-frequency relay group is used to connect the DIP switch interface of the data exchange network module of the aviation communication equipment to the bit error meter under the control of the control unit; The control unit is used to switch the radio frequency interface and the dip switch interface of the aviation communication equipment data exchange network module according to the switch switching instruction, and to control the state of the aviation communication equipment data exchange network module through the switch signal.

3. The aviation communication equipment data exchange network module tester according to claim 2, characterized in that: The radio frequency relay group is unified into a common radio frequency interface through the definition of the relay switching module interface.

4. The aviation communication equipment data exchange network module tester according to claim 2, characterized in that: The drive interface is connected to the computer module via a serial port.

5. The aviation communication equipment data exchange network module tester according to claim 4, characterized in that: The serial port includes a serial port receiving module, a serial port sending module and a serial port protocol processing module.

6. The aviation communication equipment data exchange network module tester according to claim 1, characterized in that: The corresponding functions are realized by installing the test software in the computer module.

7. The aviation communication equipment data exchange network module tester according to claim 1, characterized in that: The test software includes: User interface, used to provide a user interaction interface to enable users to perform related operations on the test; User login module, used to input user name and password, and enter the test software after verification; System setting module, used for system setting; Automatic test module, used to automatically test all functions and performance indicators of the data exchange network module of the aviation communication equipment under test by sending test instructions; A test result processing module is used to process the test results; The underlying driver, including the instrument driver and serial port communication protocol, is used to realize the drive and communication with the programmable switch module, bit error tester and the data exchange network module of the aviation communication equipment under test.

8. The aviation communication equipment data exchange network module tester according to claim 7, characterized in that: The system settings include: Select module model: select the aviation communication equipment data exchange network module to be tested and load the corresponding test items; Select test items: Test items are displayed in a tree structure, which is used to select single or multiple test items. After the test is started, the corresponding test program will be called through the automatic test module for testing; Single setting: Single setting of the parameters and working mode of the bit error tester and the data exchange network module of the aviation communication equipment being tested.

9. The aviation communication equipment data exchange network module tester according to claim 7, characterized in that: The automatic test includes automatic testing of self-check function, information return function, uplink switching network, downlink switching network, loop self-check circuit, main-standby switching network switching and / or bit error rate.

10. The aviation communication equipment data exchange network module tester according to claim 7, characterized in that: The processing of the test results includes displaying the test results, accessing the test results, printing the test results and marking unqualified items.

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