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CN-122017765-A - Comprehensive intelligent detection and fault positioning system for T/R assembly of aviation radar

CN122017765ACN 122017765 ACN122017765 ACN 122017765ACN-122017765-A

Abstract

The invention belongs to the technical field of T/R component detection, and particularly provides an aviation radar T/R component comprehensive intelligent detection and fault positioning system which comprises a main control module, a radio frequency test module, a multi-channel radio frequency switching matrix, a precision test fixture, a programmable power management module, an intelligent diagnosis and fault positioning module and a comprehensive database module. The main control module cooperates with each hardware module to complete automatic test. The intelligent diagnosis and fault positioning module adopts a layered diagnosis strategy through data interaction with the comprehensive database module, and dynamically adjusts a test scheme by combining a closed loop feedback mechanism, so that the accurate fault positioning from a component level to a component level is finally realized. The invention improves the test efficiency and the fault detection speed of the T/R assembly, realizes accurate fault positioning, meets the high-quality and high-efficiency test and guarantee requirements of modern aviation radars, and effectively solves the problems existing in the existing T/R assembly detection technology.

Inventors

  • YU ZHIYONG
  • Ren Baixu
  • ZHANG DONGCHANG

Assignees

  • 吉林航空维修有限责任公司

Dates

Publication Date
20260512
Application Date
20260413

Claims (7)

  1. 1. The integrated intelligent detection and fault positioning system for the aviation radar T/R component is characterized by comprising a main control module (1), a radio frequency test module (2), a multi-channel radio frequency switching matrix (3), a precision test fixture (4) and a programmable power management module (5), wherein the main control module (1) respectively sends configuration parameters, path switching instructions and control instructions to the radio frequency test module (2), the multi-channel radio frequency switching matrix (3) and the programmable power management module (5) and receives test data and state information returned by the configuration parameters, the precision test fixture (4) is provided with the tested T/R component, the multi-channel radio frequency switching matrix (3) dynamically constructs a radio frequency signal path between the radio frequency test module (2) and the tested T/R component according to the path switching instructions, the radio frequency test module (2) generates and measures radio frequency signals according to the configuration parameters, the programmable power management module (5) supplies power to the tested T/R component according to the control instructions and monitors the power supply parameters, the main control module (1) internally comprises an intelligent diagnosis and fault positioning module (6) and an integrated database module (7), the diagnosis and fault positioning module (6) performs layered diagnosis and diagnosis on the received test data and the intelligent diagnosis data and the integrated database (6) to perform diagnosis and the diagnosis data to the integrated diagnosis module (6) to analyze the fault positioning data and the integrated diagnosis data and provide the diagnosis result and the diagnosis data and the integrated database (6) to the integrated diagnosis module to perform diagnosis and the diagnosis data, and storing test data and diagnosis results from the main control module (1).
  2. 2. The comprehensive intelligent detection and fault location system for the T/R component of the aviation radar according to claim 1, wherein the radio frequency test module (2) comprises a vector network analysis unit (21) and a frequency spectrum and power analysis unit (22), the vector network analysis unit (21) measures S parameters of the T/R component to be tested, the S parameters comprise a transmitting gain, a receiving gain, an insertion loss, an input standing wave ratio, an output standing wave ratio, a phase shifting precision and an attenuation precision, the frequency spectrum and power analysis unit (22) measures dynamic performance indexes of the T/R component to be tested in a transmitting state, and the dynamic performance indexes comprise transmitting power, a 1dB compression point, a harmonic suppression ratio and spurious emission, and noise coefficients in a receiving state.
  3. 3. The comprehensive intelligent detection and fault location system of the aviation radar T/R assembly according to claim 1 is characterized in that the main control module (1) dynamically generates and executes a targeted supplementary test sequence according to a diagnosis result fed back by the intelligent diagnosis and fault location module (6) to acquire finer fault characteristic data.
  4. 4. The integrated intelligent detection and fault location system for the T/R components of the aviation radar according to claim 3 is characterized in that the hierarchical diagnosis executed by the intelligent diagnosis and fault location module (6) comprises the steps of comparing test data with standard data to judge the qualification of the component level, locating to the module level according to the type of the out-of-tolerance index if the test data is not qualified, and further locating to a fault component by calling refined test and analysis.
  5. 5. The comprehensive intelligent detection and fault location system for the aviation radar T/R assembly according to claim 4 is characterized in that the T/R assembly comprises a transmitting channel module, a receiving channel module and a beam control module, the fault module is preliminarily locked according to the out-of-tolerance index type, if the transmitting power, the transmitting gain and the 1dB compression point index are not qualified, the fault is preliminarily located in the transmitting channel module, if the noise coefficient and the receiving gain index are not qualified, the fault is preliminarily located in the receiving channel module, if the phase shifting precision or the attenuation precision is not qualified, the fault is preliminarily located in the beam control module, and if the power monitoring current is abnormal, the fault is preliminarily located in the programmable power management module (5).
  6. 6. The integrated intelligent detection and fault location system for the T/R components of the aviation radar according to claim 4, wherein the data stored by the integrated database module (7) comprises nominal performance parameters, historical test data, fault cases, diagnosis rules and test reports of the tested T/R components, and the fault case data accumulated in the integrated database module (7) is used for updating and optimizing a fault knowledge base of the intelligent diagnosis and fault location module (6).
  7. 7. The integrated intelligent detection and fault localization system for an aircraft radar T/R assembly of claim 6, wherein the data in the integrated database module (7) is updated accordingly by replacing the precision test fixture (4) adapted to different types of T/R assemblies to adapt to different types of aircraft radar T/R assemblies.

Description

Comprehensive intelligent detection and fault positioning system for T/R assembly of aviation radar Technical Field The invention belongs to the technical field of T/R component detection, and particularly relates to an aviation radar T/R component comprehensive intelligent detection and fault positioning system. Background The performance of the aviation radar T/R component, which is used as a core unit of the active phased array radar, directly determines the overall efficiency of the radar system. On-board radars typically integrate hundreds or thousands of T/R components, for which efficient, accurate performance detection and fault localization are critical during development, production and maintenance phases. The test method of the existing T/R assembly mainly comprises a manual discrete instrument test method, a semi-automatic test system and special test equipment. Manual discrete instrument testing methods are inefficient, prone to human error, and difficult to quickly locate internal faulty modules or components. Although semi-automatic test systems are improved, the integration level and the test coverage are limited, and only partial radio frequency performance indexes are usually covered, so that the control logic is relatively simple, and the intelligent fault diagnosis capability is lacked. The special test equipment has poor universality and high development cost. The prior art has the problems of low automation degree, low testing efficiency, insufficient fault locating capability and the like. In particular, in fault localization, the prior art can only identify anomalies in performance parameters, but cannot intelligently and progressively analyze and localize to specific fault sources, such as power amplifier failures or control logic errors, layer by layer based on such data. Therefore, a system capable of realizing intelligent detection and fault location is lacking in the prior art so as to meet the testing and guaranteeing requirements of the modern aviation radar T/R assembly on high quality, high efficiency and high reliability. Disclosure of Invention The invention overcomes the defects of the prior art, provides an aviation radar T/R component comprehensive intelligent detection and fault positioning system, and completes rapid and accurate measurement of all key performance indexes of the T/R component through a main control module, a radio frequency test module, a multi-channel radio frequency switching matrix and a programmable power management module, and carries out intelligent comparison and layering reasoning on test data through data interaction of an intelligent diagnosis and fault positioning module and a comprehensive database module, thereby finally realizing accurate fault positioning from component level to component level and effectively solving the problems existing in the prior art. The technical scheme adopted by the invention is that the comprehensive intelligent detection and fault positioning system for the T/R assembly of the aviation radar comprises a main control module, a radio frequency test module, a multi-channel radio frequency switching matrix, a precision test fixture, a programmable power management module, an intelligent diagnosis and fault positioning module and a comprehensive database module. The main control module is used as a control and data processing center of the whole system and is responsible for coordinating the starting, executing, suspending and terminating of the whole test flow, sending control instructions and configuration parameters to other functional modules, and receiving, processing and storing test data and state information from the modules in real time. The radio frequency test module generates and measures radio frequency signals, and a vector network analysis unit and a frequency spectrum and power analysis unit are integrated inside the radio frequency test module. The vector network analysis unit measures S parameters (such as transmitting/receiving gain, insertion loss, input/output standing wave ratio, phase shift precision/attenuation precision) of the T/R component, and the frequency spectrum and power analysis unit measures dynamic performance indexes such as transmitting power, 1dB compression point, harmonic suppression ratio, spurious emission and noise coefficient in a receiving state of the T/R component. The core function of the multi-channel radio frequency switching matrix is to automatically, quickly and accurately construct a radio frequency test path under the control of the main control module. The multi-channel radio frequency switching matrix is provided with a plurality of input ports and a plurality of output ports, wherein the input ports are connected to the test ports of the radio frequency test module, and the output ports are connected to the radio frequency interfaces of the precision test fixture. The multi-channel radio frequency switching matrix realizes flexible connection between the