Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

An intermediate frequency signal generating device for l-band equipment testing of avionics system

A technology for intermediate frequency signal and equipment testing, which is applied in the direction of testing electrical devices, measuring devices, and components of electrical measuring instruments during transportation, etc. It can solve the problems of single type of test signal and cannot meet the test needs well

Active Publication Date: 2018-09-07
UNIV OF ELECTRONICS SCI & TECH OF CHINA
View PDF10 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The current special test instruments and automatic test systems can only generate a single type of test signal, which cannot meet the test needs well

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • An intermediate frequency signal generating device for l-band equipment testing of avionics system
  • An intermediate frequency signal generating device for l-band equipment testing of avionics system
  • An intermediate frequency signal generating device for l-band equipment testing of avionics system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0025] Specific embodiments of the present invention will be described below in conjunction with the accompanying drawings, so that those skilled in the art can better understand the present invention. It should be noted that in the following description, when detailed descriptions of known functions and designs may dilute the main content of the present invention, these descriptions will be omitted here.

[0026] figure 1 It is a schematic diagram of a specific embodiment of the intermediate frequency signal generating device used in the L-band equipment test of the avionics system of the present invention;

[0027] In this example, if figure 1 As shown, the intermediate frequency signal generating device used in the L-band equipment testing of the avionics system of the present invention is composed of four parts: a loading control unit 1 , a configuration stream storage unit 2 , a digital modulation unit 3 and a digital-to-analog conversion unit 4 . The IO port of the loa...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention discloses an intermediate frequency signal generating device for L-band equipment testing of avionics systems, which utilizes a loading control unit based on a USB interface, a configuration stream storage unit based on a non-volatile memory, and a two-chip FPGA-based A digital modulation unit and a digital-to-analog conversion unit of the programming logic device generate intermediate frequency signals. At the same time, a two-stage decomposition is performed on the process of generating the composite modulated intermediate frequency signal required for testing, and it is processed by two FPGAs. In the actual test application, the loading control unit dynamically loads the function execution code of the primary modulation module and the secondary modulation module, that is, the FPGA execution code, which can quickly change the FPGA logic function under working conditions, and output different types of L that meet the test requirements. Band equipment IF test signal. The invention has the advantages of fast response speed, various waveforms of intermediate frequency signals, convenient and flexible control, low cost and small size. Combined with the L-band radio frequency signal module, it can conveniently build a test platform and an automatic test system together with other test and measurement instruments.

Description

technical field [0001] The invention belongs to the technical field of test signal generation, and more specifically relates to an intermediate frequency signal generation device used in the test process of L-band equipment of an airborne integrated modular avionics system. Background technique [0002] Airborne avionics system, also referred to as avionics system for short, is used in all stages of take-off, navigation and landing of various fixed-wing and rotary-wing aircraft. Its functions can be divided into several major categories such as communication, navigation, surveillance and identification. , involving specific functional items such as ground-air communication, weather detection, absolute and relative altitude measurement, air traffic control, and air collision avoidance. [0003] With the continuous development of technology and the continuous improvement of demand, the avionics system has gradually evolved from the original independent avionics system to the c...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): G01R31/00G01R1/00
CPCG01R1/00G01R31/008
Inventor 张朋李力黄建国兰京川胡学海张治国
Owner UNIV OF ELECTRONICS SCI & TECH OF CHINA
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products