Design of Multi-function Digital IO Board Based on FPGA
ZHANG Meixian
HONG Yingping
Abstract：In order to meet the requirements of the unmanned aerial vehicle testing system for digital input and output signals,a multi-channel,multi-function digital IO board is designed.The board uses FPGA as the main control unit and provides 96 stan-dard 5V TTL level input/output channels.It can realize pulse measurement,PWM output and general digital IO functions by config-uring different IO group function modes.It also supports three data communication interfaces of Gigabit Ethernet,LVDS and RS422,and is equipped with host computer software to realize human-computer interaction.The actual engineering verification shows that the system not only has the general digital input and output function,but also can realize the PWM signal with the output frequency of 1 kHz～50 kHz and the duty cycle of 10%～90%.The pulse signal with the frequency of 1 kHz～50 kHz and the duty cy-cle of 10%～90%is collected and measured,and the measurement error of the two parameters is less than 0.1%,which meets the needs of the actual project.
Keywords：unmanned aerial vehicle testing systemdigital IOpulse measurementPWM outputFPGA
Publication Date：2025-07-20
Online Publishing Date：2025-09-25(First online date of this platform, not the publication date of the document)
Pages：6( 71-75,92 )