STM32-based high-speed multifunctional data acquisition card

By using a high-speed, multi-functional data acquisition card based on STM32, synchronous high-speed acquisition and real-time processing of multiple signal types are achieved. This solves the problems of traditional data acquisition cards, such as limited functionality, low acquisition rate, and accuracy degradation, and improves the stability and applicability of data acquisition.

CN122450865APending Publication Date: 2026-07-24GUILIN UNIV OF ELECTRONIC TECH
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Patent Information

Application Number
CN202610596868.5
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2026-04-30
Publication Date
2026-07-24

AI Technical Summary

Technical Problem

Traditional data acquisition cards have limited functionality, low acquisition rates, poor interface compatibility, and accuracy degradation due to temperature drift during long-term operation, making it difficult to meet the needs of multi-signal synchronous monitoring and high-precision data acquisition in industrial settings.

Method used

Using an STM32 microcontroller as the core, combined with an adaptive self-calibration module, a low-temperature drift high-precision reference voltage source, and a multi-interface transmission design, it achieves synchronous high-speed acquisition, real-time processing, and precision self-calibration of multi-channel data, and supports high-speed acquisition and high-precision data storage of multiple signal types.

Benefits of technology

It improves the sampling rate, data throughput, and system stability of data acquisition, adapts to the needs of multiple scenarios, and enhances the product's cost-effectiveness and market competitiveness.

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Abstract

The invention belongs to the technical field of embedded systems and data acquisition, and discloses a high-speed multifunctional data acquisition card based on STM32. The acquisition card takes an STM32H7 series microcontroller as a core, integrates functional modules of signal conditioning, high-speed AD conversion, multi-type communication, two-way storage, self-adaption and self-calibration and the like, supports high-speed acquisition of analog voltage, digital switching value and pulse signals and 12 / 16-bit self-adaption of sampling precision, is equipped with interfaces of Ethernet, USB2.0, RS485 and the like, supports multi-card cascade connection, and has a wide application prospect. And multiple hardware protection and anti-electromagnetic interference design are realized. The system gives consideration to high-speed collection and functional diversity, is high in hardware integration level and good in environmental adaptability, can be widely applied to the fields of industrial automation, intelligent monitoring, scientific research experiments and the like, and is high in practical and popularization value.
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