Dynamic signal test and analysis system of universal serial bus interface

Abstract

The invention relates to a dynamic signal test and analysis system of a universal serial bus interface. The dynamic signal test and analysis system comprises a controllable bridge supply circuit, a sensor and a programmable control signal amplifier, wherein the controllable bridge supply circuit, the sensor, the programmable control signal amplifier, an analog filter, a 16-bit analog to digital converter, a DSP (Digital Signal Processor) data processor, a UART (Universal Asynchronous Receiver/Transmitter) to USB (Universal Serial Bus) chip, a USB HUB and a computer are sequentially connected in series; the controllable bridge supply circuit, the programmable control signal amplifier, a 16-bit digital to analog converter, a comparator, the 16-bit analog to digital converter, the DSP data processor, the UART to USB chip, the USBHUB and the computer are sequentially connected with a single chip microcomputer in parallel; a subtracter and the 16-bit digital to analog converter are connected with the comparator in parallel; and the computer is provided with signal test and analysis software. The dynamic signal test and analysis system has the advantages of simplicity and convenience in test, high test precision and capacity of multiple sampling channels; and by adopting the dynamic signal test and analysis system, the sampling frequency is not reduced, and the multiple-channel, high-speed and real-time sampling can be realized.

Description

technical field [0001] The invention relates to a dynamic signal test and analysis system based on a universal serial bus interface. Background technique [0002] With the rapid development of current social technology and the continuous improvement of design level, more and more attention has been paid to the use of experiments to verify theoretical design in the fields of national defense technology, automobile engineering, civil engineering, etc., and to verify the theory by comparing experimental results with theoretical calculation values Calculate and optimize the theoretical model, so as to design a more perfect product, and at this time, the requirements for the continuous sampling frequency of the test product are getting higher and higher. Therefore, there is an increasing demand for test products with multi-channel high-speed real-time sampling. [0003] The Universal Serial Bus interface is what we often call the USB interface, which is the abbreviation of Unive...

AI Technical Summary

Problems solved by technology

In this way, when there are many measuring points on the test site, multi-channel high-speed real-time sampling cannot be realized, and the experimental requirements cannot be met.

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