Testing device for airplane short-distance navigation equipment

Abstract

The utility model belongs to the field of airplane function test and detection, and relates to a test tool for a certain type of airborne short-distance navigation equipment of a special airplane, which is a tool capable of completing function and performance test and fault inspection of the certain type of airborne short-distance navigation equipment in the ground detection process. Relates to a test device for airplane short-distance navigation equipment. Comprising a power supply module, a working voltage and current monitoring module, an audio monitoring module and a cable adapter box. An audio test interface, a bus test interface and the like are additionally arranged to check the correctness of output signals of a control box and the correctness of output signals of a host of the short-distance navigation equipment. The tool is used for function and performance detection of the short-distance navigation equipment of the airplane, can meet test requirements, and has high popularization value.

Description

Technical Field

[0001] This utility model belongs to the field of aircraft function testing and inspection, and relates to a test fixture for a certain type of airborne short-range navigation equipment on special aircraft. The utility model is a fixture that can complete the function, performance testing, and fault inspection of a certain type of airborne short-range navigation equipment during ground inspection. It also relates to a test device for aircraft short-range navigation equipment. Background Art

[0002] A certain type of airborne short-range navigation equipment is a critical component in the aircraft's avionics system. The pilot selects its operating mode via a control box, enabling it to smoothly receive information from ground stations, providing the pilot with the aircraft's real-time position and ensuring the aircraft adheres to its intended trajectory. Currently, an external excitation source is used to radiate test signals to the equipment via antennas to verify its correct functionality after installation. However, this method cannot verify the performance of the short-range navigation system, nor can it accurately locate any problems onboard. Utility Model Content

[0003] Purpose of the utility model

[0004] This utility model addresses the aforementioned issues by providing a comprehensive test fixture. This fixture enables functional and performance testing of this type of short-range navigation equipment in a laboratory environment. It also monitors the product's operating status through the installation of a voltmeter and ammeter. Furthermore, it utilizes additional audio and bus test interfaces to verify the correctness of the control box and host computer output signals. This fixture is designed for functional and performance testing of this type of short-range navigation equipment on aircraft, meeting testing requirements and possessing high promotional value.

[0005] Technical Solution

[0006] The utility model is realized through the following technical solution: the equipment mainly consists of a test tool, a test cable and a built-in power supply.

[0007] A test device for aircraft short-range navigation equipment includes a power supply module 1, a working voltage and current monitoring module 2, an audio monitoring module 3, and a cable adapter box 4. The power supply module 1 provides working voltage to the working voltage and current monitoring module 2 and the audio monitoring module 3 through an adapter cable 5. The working voltage and current monitoring module 2 is transferred to the corresponding voltage and current monitoring interface on the cable adapter box 4 through the adapter cable 5, and the audio monitoring module 3 is transferred to the corresponding audio monitoring interface on the cable adapter box 4 through the adapter cable 5. The cable adapter box 4 is connected to the short-range navigation system under test through a test cable 6 to power the short-range navigation system and test its functional indicators.

[0008] Furthermore, the power supply module 1 provides 220V AC voltage and 28V DC voltage.

[0009] Furthermore, the 28V DC voltage is used to power the short-range navigation system, and the 220V AC voltage is used to power the working voltage, current monitoring module 2, and audio monitoring module 3.

[0010] Furthermore, the working voltage and current monitoring module 2 can meet the test requirements of testing 28V DC voltage and current above 10A.

[0011] Furthermore, the cable adapter box 4 is composed of several sockets and wiring modules of different models, which supply power to the short-range navigation system and transfer the measured signals.

[0012] Furthermore, the adapter cable 5 meets the requirements for testing ARINC429 standard signals.

[0013] Furthermore, during testing, the bus monitoring device is connected to the ARINC429 bus monitoring interface of the cable adapter box 4 via the test cable 6, and the cable adapter box 4 supplies power to the short-range navigation system and transfers the measured signal.

[0014] The beneficial effects of this application are:

[0015] 1. The principle design of the test fixture and the selection of component parameters are highly targeted. In terms of cost, it is low-priced and has high economic benefits.

[0016] 2. Use a distributed architecture to achieve the coordinated work of external signal excitation, signal monitoring equipment, and the short-range navigation equipment being tested to reduce costs.

[0017] 3. It realizes the function and performance testing of short-range navigation equipment, and makes fault troubleshooting and positioning more intuitive, convenient and fast.

[0018] 4. The test tooling complies with the principle of ergonomics, is simple to operate and easy to maintain. In actual use, it greatly improves work efficiency and saves working time.

[0019] 5. The test tooling is portable and can be extended to users to test the functions and performance of short-range navigation equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is the schematic diagram of the test fixture;

[0021] Among them: 1. Power supply module 2. Working voltage and current monitoring module 3. Audio monitoring module 4. Cable adapter box 5. Adapter cable 6. Test cable. DETAILED DESCRIPTION

[0022] The present invention is further described below with reference to the following embodiments. The following are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0023] The tester consists of a power control switch, monitoring circuitry, a cable adapter box (including sockets and wiring modules), operating indicators, an audio detection module, and a bus detection interface. The power control switch primarily provides and controls 220V AC and 28V DC voltages to power the control box and host computer. The monitoring circuitry uses a digital display to monitor the operating status of equipment and products, as well as measure the operating voltage and power consumption of the device under test. The cable adapter box is composed of various sockets and wiring modules.

[0024] The following combination Figure 1 The present invention is further described in detail with the specific implementation method: To check the function of this type of short-range navigation equipment, connect the test cable of the device under test to the corresponding connector in the test tool panel partition; first connect the AC 220V power supply of the test equipment, and then connect the DC 28V power supply, and there should be power supply voltage indications on the two voltmeters. Select its working mode through the control box of the short-range navigation equipment, and the corresponding current should be displayed on the 28V ammeter. Select different working modes through the knobs and switches on the control box, and the control box display screen should change accordingly. The performance of this type of short-range navigation equipment is checked through an external excitation signal generator, and the bus monitoring equipment is connected to the front panel partition of the test tool, and power is supplied to the system under test and the test tool through the 220V and 28V power switches. Select the working mode under test in the control box of the device under test, and use an external excitation signal simulator to provide a test signal to the device under test. The bus information of the short-range navigation equipment under test is collected and read on the bus monitoring equipment to determine whether its product performance meets the design requirements.

[0025] It will be understood by those skilled in the art that, unless otherwise defined, all terms used herein (including technical terms and scientific terms) have the same meaning as the general understanding of those skilled in the art in the field to which the present invention belongs. It should also be understood that terms such as those defined in general dictionaries should be understood to have a meaning consistent with that in the context of the prior art, and will not be interpreted in an idealized or overly formal sense unless defined as such here. The specific embodiments described above further explain the purpose, technical solutions and beneficial effects of the present invention in detail. It should be understood that the above description is only a specific embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A test device for aircraft short-range navigation equipment, characterized in that: It includes a power supply module, a working voltage and current monitoring module, an audio monitoring module, and a cable adapter box; the power supply module provides working voltage to the working voltage, current monitoring module and audio monitoring module through an adapter cable; the working voltage and current monitoring modules are transferred to the corresponding voltage and current monitoring interfaces on the cable adapter box through an adapter cable, and the audio monitoring module is transferred to the corresponding audio monitoring interface on the cable adapter box through an adapter cable. The cable adapter box is connected to the short-range navigation system under test through a test cable to power the short-range navigation system and test its functional indicators.

2. The device according to claim 1, wherein The power supply module provides 220V AC voltage and 28V DC voltage.

3. The device according to claim 2, wherein The 28V DC voltage is used to power the short-range navigation system, and the 220V AC voltage is used to power the working voltage, current monitoring module, and audio monitoring module.

4. The device according to claim 3, characterized in that The working voltage and current monitoring module can meet the test requirements of testing 28V DC voltage and current above 10A.

5. The device according to claim 4, characterized in that The cable adapter box is composed of several sockets of different models and wiring modules, which supply power to the short-range navigation system and transfer the measured signals.

6. The device according to claim 5, characterized in that The cable adapter box meets the requirements for testing ARINC429 standard signals.

7. The device according to claim 6, characterized in that During testing, the bus monitoring device is connected to the ARINC429 bus monitoring interface of the cable adapter box via a test cable. The cable adapter box supplies power to the short-range navigation system and transfers the measured signal.

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