Ship-borne electronic equipment test diagnosis equipment

A technology of electronic equipment and diagnostic equipment, applied in the field of testing, can solve problems such as equipment reliability decline, difficult fault detection and integrity testing, hardware cost increase, etc., to achieve the effect of improving utilization rate and saving maintenance and guarantee funds

Inactive Publication Date: 2017-06-20
CSSC SYST ENG RES INST +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

With the increasing technical complexity of electronic equipment, it is difficult to complete fault detection and integrity testing solely by the built-in test fun

Method used

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  • Ship-borne electronic equipment test diagnosis equipment
  • Ship-borne electronic equipment test diagnosis equipment
  • Ship-borne electronic equipment test diagnosis equipment

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0071] Example 1

[0072] The invention can test the main functional performance indexes of the radar sonar, and perform fault diagnosis and auxiliary maintenance. The main test indicators of radar include main trigger pulse test, clock reference signal test, transmitter output RF signal test, transmitter second and third level high voltage power supply test, receiver microwave signal test, intermediate frequency signal test, frequency synthesizer local oscillator signal test, Target construction test, noise figure test, stable platform swing error test, etc. The main test indicators of sonar include sonar pre-amplitude consistency test, pre-phase consistency test, pre-frequency test, transmission signal source center frequency test, transmission signal source pulse width test, transmission power amplifier test, and array element Test, signal processing performance test, etc. Several typical test methods are described below.

[0073] The radar target construction test mainly eva...

Example Embodiment

[0075] Example 2

[0076] The uniformity of the radar antenna rotation speed is an important index to judge the stability of the radar servo system. The invention uses the main control computer to control the PXI test extension to collect the true north signal of the servo system and perform calculations to obtain the radar antenna speed uniformity index. After connecting the main control computer and the PXI test extension, set the antenna speed to N0, and the main control computer controls the multi-channel test data acquisition module of the PXI test extension to read 10 north pulse signals, and time from the first pulse. The time is T. Calculate the unevenness of the antenna rotation speed.

[0077] Uniformity of antenna rotation speed = [1-600 / (T×N0)]×100%

[0078] After calculating the result, compare it with the standard index and draw the test conclusion.

Example Embodiment

[0079] Example 3

[0080] The sonar front-end consistency index has a great influence on the quality of sonar receiving and transmitting signals. The universal test and diagnosis equipment can test the consistency of the sonar front through the main control computer, sonar signal source, PXI test extension, and channel extension extension. The main control computer controls the sonar analog signal source to output standard multi-channel excitation signals from the top of the sonar front module; at the same time, it controls the PXI test extension and channel extension extension to collect from the signal output end of the front module, and the test extension will collect it The original data is returned to the main control computer for calculation and analysis, so as to obtain the front consistency index of the tested sonar.

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Abstract

The invention discloses ship-borne electronic equipment test diagnosis equipment. The equipment mainly comprises a master control computer, a PXI test extension set, a frequency spectrum test extension set, a power test extension set, an impedance test extension set, a sonar simulation signal source, a radar simulation signal source and a swing signal source. In the invention, external testing is performed on ship-borne electronic equipment so that utilization rate of an on-site grade test resource is increased and maintenance guarantee cost of the equipment is effectively saved.

Description

[0001] Technical field [0002] The invention belongs to the technical field of testing, and in particular relates to testing and diagnosing equipment for shipboard electronic equipment. Background technique [0003] For a long time, the on-site technical support of ship electronic equipment has mainly relied on the equipment's own built-in test function (BIT) for on-site fault detection, locating the fault to the field replaceable unit (LRU), and replacing it with random spare parts to eliminate the fault. With the increasing technical complexity of electronic equipment, it is difficult to complete fault detection and integrity testing solely by the built-in test function. Complicated internal testing functions will not only cause a substantial increase in hardware costs, but also significantly reduce the reliability of the equipment. Contents of the invention [0004] The invention provides an external testing device capable of realizing rapid diagnosis of shipboard equip...

Claims

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Application Information

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IPC IPC(8): G01R31/00G01S7/40G01S7/52
CPCG01R31/008G01S7/4052G01S7/52004
Inventor 孙旭刘玉华李峰纲
Owner CSSC SYST ENG RES INST
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