摘要
以基于ARM7内核的PHILIPS公司的LPC2119微控制器在应变测试系统中的应用为例,介绍了桥路与信号调理电路的设计,利用LPC2119的A/D转化器实现对供桥电压与桥路输出电压的转换,并利用编程实现桥路的自动调零以及量程的自动转换控制,同时介绍了LPC2119的接口和外设资源扩展的系统功能。提高了系统的集成度,简化了系统结构。
ARM,namely advanced RISC microprocessor (advanced RISC). This paper takes the application of PHILIPS LPC2119 in the strain measurement system as an example,introduces the design of electric bridge and signal adjusting circuit,uses the A/D converter to realize the conversion of input voltage and output voltage of the electric bridge,uses the system program to realize electric bridge automatic zero adjust and automatic range switching,and introduces the interface and external resource expansion function of LPC2119.With these methods,the system integration degree is improved and the system structure is simplified.
出处
《机电工程技术》
2007年第10期34-35,108,共3页
Mechanical & Electrical Engineering Technology
关键词
ARM
应变测试系统
电桥
自动调零
自动量程
ARM
strain measurement system
electric bridge
automatic zero adjust
automatic range switching
