Airplane engines ground starting up system tester

An aircraft engine and starting system technology, which is applied in the testing of engines, instruments, and testing of machine/structural components, etc., can solve the problems of difficulty in meeting the specific requirements of engine ground starting inspection, complicated operation methods of function generators, etc., and achieve simplification. Instrument operation, the effect of improving signal quality

Active Publication Date: 2008-05-21
JIANGXI HONGDU AVIATION IND GRP
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  • Abstract
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Problems solved by technology

The existing detection equipment consists of a general-purpose function generator and a connection box. The operation method of the fu

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  • Airplane engines ground starting up system tester
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Embodiment Construction

[0011] As shown in Figure 1, the present invention includes a self-test module 1, a liquid crystal module 2, a keyboard module 3, a communication module 4, a microprocessor 5, an isolation module 6, a DDS module 7, a conditioning module 8, an amplitude control module 9, and a power module 10. Output module 11, switch value input module 12, led indication module 13, switch value isolation module 14. It inputs data such as the frequency, peak-to-peak value, and frequency sweep step value of the waveform through the keyboard module 3, and the microprocessor 5 isolated by the isolation module 6 controls the AD9850 of the DDS module 7 to generate a standard sine wave, and then passes through the conditioning module 8. The sine wave is converted into a square wave signal, processed by the digital potentiometer of the amplitude control module 9 , amplified by the power module 10 and then sent to the output module 11 for output. Simultaneously, the switch value input module 12 inputs ...

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Abstract

The invention provides an inspection instrument for a ground starting system of a plane engine and comprises a self-checking module, a liquid crystal module, a keyboard module, a communication module, a micro-processor, an isolation module, a DDS module, a conditioning module, an amplitude control module, a power module, an output module, a switching value input module, a switching value isolation module and a LED indication module. The DDS technology can be adopted to produce frequency source, the frequency and the amplitude of which can be adjusted continuously; with the control of each module and connection with crystal display, keyboard input, etc., a menu-type man-machine dialog interface can be realized; therefore, the signal quality can be improved and the operation of the instrument can be simplified.

Description

technical field [0001] The invention relates to an aircraft engine equipment testing instrument, in particular to an aircraft engine ground starting system inspection instrument. Background technique [0002] Generally, in the later stage of aircraft assembly, it is necessary to check the circuit of the engine ground start system to ensure the correctness of the engine operation. The engine ground starting system checker needs to output a frequency source with a clean spectrum and strong load capacity to simulate the frequency signal generated by the engine speed sensor and add it to the starting system circuit. It collects 13 switches and uses LED signal lights to indicate the status of each system circuit. correctness. Existing testing equipment consists of a general-purpose function generator and a connection box. The operation method of the function generator is complicated, and it is difficult to meet the specific requirements of the engine ground start inspection. C...

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Application Information

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IPC IPC(8): G01M15/00
Inventor 何平万启星饶建英
Owner JIANGXI HONGDU AVIATION IND GRP
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