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Module testing system in limit signal computer

A technology of module testing and limit signals, which is applied in the detection of faulty computer hardware, calculation, error detection/correction, etc. It can solve problems such as inaccurate fault location, difficult maintenance methods, and inability to fully diagnose the fault state of the circuit board. Achieve cost savings, improve repair efficiency and quality, and verify accuracy and consistency

Pending Publication Date: 2016-10-12
国营芜湖机械厂
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AI Technical Summary

Problems solved by technology

This maintenance method is difficult, the fault location is not accurate, and the fault state of the circuit board cannot be fully diagnosed

Method used

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  • Module testing system in limit signal computer
  • Module testing system in limit signal computer
  • Module testing system in limit signal computer

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Embodiment Construction

[0026] In order to make the purpose, technical solutions and beneficial effects of the present invention more clear, the preferred embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings, and the present invention will be further described to facilitate the understanding of technical personnel.

[0027] Such as Figure 1 to Figure 16 As shown, a limit signal computer internal module testing system includes a control module, a power module, a serial communication module, a switch control module, a 429 bus control module, A / D, and a D / A conversion control module. The power module, The serial port communication module, switch value control module, 429 bus control module, A / D, D / A conversion control module are all connected with the control module to realize data and address interaction. The invention realizes the functions of sending, converting and collecting one-time command signal, A / D, D / A signal and 429 signal. At...

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Abstract

The invention discloses a module testing system in a limit signal computer. The module testing system comprises a control module, a power module, a serial port communication module, a switching value control module, a 429 bus control module and an A / D and D / A conversion control module. The power module, the serial port communication module, the switching value control module, the 429 bus control module and the A / D and D / A conversion control module are all connected with the control module. According to the module testing system, a one-by-one detecting function is achieved, and a basic platform for providing various power sources and excitation for various functional circuit boards is set up. The work state of the product on an airplane is simulated, the accuracy and consistency of data are effectively verified, and the fault point of the product is determined. The testing capacity on a matched plate of the limited signal computer can be achieved, the repairing efficiency and quality are improved, a large amount of cost is reduced, and the circuit boards in better accordance with the actual product work mode can be concurrently tested and popularized.

Description

technical field [0001] The invention relates to a testing device for a limit signal computer, in particular to a test system for an internal module of a limit signal computer. Background technique [0002] The limit signal computer is a supporting product of the air data subsystem of the aircraft integrated avionics system. It is used to calculate the limit parameters of the aircraft in real time and provide various forms of limit signals for flight control, display, alarm signal systems and other equipment. As an important component of aircraft airborne equipment, the limit signal computer has a high failure rate, and most of the failures are caused by circuit board failures. Currently, circuit board repairs still remain at the level of manual testing. That is, the circuit board is powered or signaled separately, and the independent device is checked by using a three-purpose meter, an oscilloscope, etc. This maintenance method is difficult, the fault location is not accur...

Claims

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Application Information

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IPC IPC(8): G06F11/22
CPCG06F11/2247Y02P90/02
Inventor 彭虎周勇军吴传贵
Owner 国营芜湖机械厂
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