摘要
介绍了一种基于单片机的低成本双积分型A/D转换电路,在设计上采用AT89C51单片机作控制器,运放LM324和多路开关一起组成双积分型模数转换电路。该双积分A/D转换电路具有转换精度高,廉价,抗干扰能力强等优点,在速度要求不高的实际工程中可以广泛使用。文中从硬件电路和软件两个方面阐述了系统的组成与功能。
This paper introduces a low-cost dual integral A/D converter circuit with a single chip computer as its core controller. The LM324 and multiplexers make up the dual integral A/D conversion circuit. This circuit features many advantages, such as high precision, low-cost, simple-structured and so on. This converter can be widely used in low-speed systems. Also, this paper elaborates the composition and functions of the system in two aspects, the circuit and the program.
出处
《电源技术应用》
2009年第9期24-27,共4页
Power Supply Technologles and Applications
关键词
单片机
双积分
A/D转换
LM324
Single Chip microcomputer
Dual Integration
A/D Conversion
LM324
