Data acquisition system interface based on USB bus technology - FPGA implements Matlab
USB bus technology is a commonly used data transmission interface and is widely used in various devices and systems. In the data acquisition system, the USB interface can be used to connect external sensors, measurement equipment, etc., and transfer the collected data to a computer or other processing equipment for processing and analysis. This article will introduce how to use FPGA to implement a data acquisition system interface based on USB bus, and combine it with Matlab programming for data processing.
- System architecture design
The design of the USB bus-based data acquisition system interface needs to consider the following aspects: USB communication protocol, FPGA selection and configuration, data acquisition and transmission, and Matlab data processing.
1.1 USB communication protocol
There are many versions of the USB communication protocol, of which USB 2.0 is the most commonly used and widely supported version. We choose USB 2.0 as the communication protocol of the system to achieve high-speed data transmission and compatibility.
1.2 FPGA selection and configuration
FPGA is a programmable logic device that can implement complex digital logic functions. In this system, we choose an FPGA chip with USB interface function and use corresponding development tools for configuration and programming.
1.3 Data collection and transmission
Data acquisition can be accomplished through external sensors or measurement devices, which can transmit data to the FPGA chip through analog input interfaces or digital input interfaces. The FPGA chip transmits the collected data to the computer through the USB interface.
1.4 Matlab data processing
Matlab is a powerful mathematical calculation and data processing tool that can interact with external devices for data. By writing Matlab programs, we can receive data from FPGA and perform various data processing and analysis.
- System implementation steps
2.1 FPGA configuration
First, select an FPGA chip with USB interface function and use the corresponding development tools to configure it. For specific configuration steps, please refer to the user manual of the FPGA chip and the documentation of the development tool.
2.2 Data collection and transmission
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