A multifunction test fixture

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By designing a multifunctional test fixture that integrates multiple interfaces and signal conversion modules, the problems of single communication interfaces and poor compatibility of existing test fixtures are solved. It achieves support for multiple communication protocols and adaptability to working levels, thereby improving the accuracy and reliability of testing.

CN224518762UActive Publication Date: 2026-07-17THE 22ND RES INST OF CHINA ELECTRONICS TECH GROUP CORP

Patent Information

Authority / Receiving Office: CN · China
Patent Type: Utility models(China)
Current Assignee / Owner: THE 22ND RES INST OF CHINA ELECTRONICS TECH GROUP CORP
Filing Date: 2025-05-30
Publication Date: 2026-07-17

AI Technical Summary

Technical Problem

Existing test fixtures have a single communication interface, cannot support multiple communication protocols simultaneously, have poor compatibility, and have a narrow range of operating levels.

Method used

Design a multifunctional test fixture that includes an interface module and an FPGA signal processing module. It supports the conversion of single-ended signals, differential signals, and serial signals, and adopts multiple connection methods and interface types, including single-ended signal ports, single-ended to differential output interfaces, differential to single-ended input interfaces, and serial input interfaces. It integrates RS232, RS485, and RS422 serial interfaces, and realizes signal conversion through an FPGA chip and a dedicated driver receiver.

Benefits of technology

It achieves compatibility with multiple communication protocols, supports multiple working levels, can adapt to the simulation of complex protocols, allows for flexible selection of functions, and improves testing accuracy and reliability.

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Abstract

The utility model relates to electrical equipment test technical field, concretely relates to a kind of multifunctional test fixture, including power module, interface module, FPGA signal processing module.Power module is used to handle, conversion voltage is suitable for the working voltage of device;FPGA signal processing module is responsible for handling the input, output signal of test fixture, and the core of entire test fixture;Interface module includes single-ended signal port, single-ended to differential output interface, differential to single-ended input interface, serial port input interface, independent serial port output interface.This multifunctional test fixture can complete the simulation of most complex protocols, support a variety of communication signal simulation.The utility model solves the problems of single communication interface, slow communication rate, poor compatibility, narrow working level adaptation range and high cost in the prior art.

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