基于STM32的信号采集卡设计

Design of signal acquisition card based on STM32

为了实现对电力系统各参数的智能控制,该设计选用处理性能强大且功能稳定可靠的STM32单片机作为核心控制器,通过对电压互感器和电流互感器的选型以及整流电路的设计,实现了对于交流电信号的采集,并利用STM32自身的A/D转换功能,对信号检测模块所采集到的信息进行模数转换,将电力参数实时显示出来,辅以继电器作为设备的保护装置,进而实现了数据的采集、处理、显示和系统保护等功能。通过实验验证了该方案设计结构简单、功能齐全、成本较低,并具有一定的扩展性。

In order to realize the intelligent control of various parameters of the power system,the design selects STM32 single chip microcomputer with strong processing performance and stable and reliable functions as the core controller.Through the selection of voltage transformer and current transformer and the design of rectifier circuit,the acquisition of AC signals is realized,and the information collected by the signal detection module is analog⁃to⁃digital converted by using the A/D conversion function of STM32,the power parameters are displayed in real time,and the relay is used as the protection device of the equipment,so as to realize the functions of data collection,processing,display and system protection.The experiment proves that this scheme has simple structure,complete functions,low cost and certain expansibility.