Aviation bus differential crystal oscillator test system

An aviation bus and test system technology, applied in the direction of measuring electricity, measuring devices, measuring electrical variables, etc., can solve problems such as inability to check electrical components, imperfect testing, and inability to fully guarantee the normal communication of aviation bus devices.

CN113358908APending Publication Date: 2021-09-07陕西朗诚众科科技开发有限公司
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Publication Date
2021-09-07

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Abstract

The invention discloses an aviation bus differential crystal oscillator test system, which comprises a power supply and an oscilloscope, and also comprises a temperature box and an FPGA chip, a crystal oscillator installation station is arranged in the temperature box, the crystal oscillator installation station is cooperatively connected to the oscilloscope through a zero-delay buffer and a differential acquisition probe, the FPGA chip is electrically connected to the zero-delay buffer, the FPGA chip is electrically connected with a serial port monitoring module and an FPGA debugging interface, and the power supply is respectively connected with the multi-crystal oscillator mounting station and the FPGA chip. The aviation bus differential crystal oscillator test system can effectively detect working faults of a crystal oscillator in a low-temperature or high-temperature environment, timely screen out defective components, ensure normal communication of an aviation bus device, eliminate defective communication board cards, reduce maintenance cost, ensure flight safety, improve the attendance rate of an airplane and has great economic and practical significance.
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Description

Technical field

[0001] The present invention relates to the field of aeronautical technology communications bus, in particular to a differential oscillator avionics bus test system. Background technique

[0002] As an important part of aviation bus avionics system, the communication between the various avionics subsystems to ensure flight safety has important significance. Differential oscillator as an aviation bus important components of the normal communication system plays an important role.

[0003] In recent years, the gradual emergence of a differential oscillator in our line of sight, as well as a growing number of electronic engineers would prefer differential oscillator, with the advantages of the development of information technology, a differential crystal high-performance, low-power, low-noise, making it many design suitable solution.

[0004] However, due to harsh natural environment experienced aircraft in flight which, from low to high, have Quartz "thermal hystere...

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Embodiment Construction

[0023] Next, the technical solutions in the embodiments of the present invention will be apparent from the embodiment of the present invention, and it is clearly described, and it is understood that the described embodiments are merely embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, there are all other embodiments obtained without making creative labor without making creative labor premises.

[0024] See Figure 1-2 The present invention provides a technical solution:

[0025] One kind of a differential oscillator avionics bus test system includes a power supply and an oscilloscope 9, further comprising a FPGA chip 5 and 10, inside incubator 10 is provided with a thermostat mounting station 3 crystal, crystal mounting station 3 and 4 by ZDB differential collecting probe 8 is connected to the oscilloscope. 9 fit, FPGA chip 5 is electrically connected to a zero delay buffer. 4, FPGA chip 5 is electrically connected ...