摘要
描述系统的技术指标,铂电阻随温度的变化的物理特性,使用C51高级编程语言中的浮点运算解决汇编语言计算精度不高的问题,以及使用MCU改善了系统的性能等。详细地论述了系统的结构组成,各主要硬件模块的实现原理,以及采用具有负反馈的电阻传感器线性化电路,改善了电桥的非线性。叙述了在C51语言中将浮点数转换为BCD码的方法。概括了提高系统的测控精度和可靠性采取的方法和措施,系统使用软、硬件相结合技术,合理的接地技术等,提高系统的测控精度、可靠性、安全性和抗干扰能力。
The technical requirements, physical characteristics that platinum-resistance was varied with temperature, applying floating-point operators in＇C51 advanced language to solve lower calculation precision in assemble language and using MCU to improve performance of the system were stated. Structure buildup of the system, realization principle about primary hardware modules and utilizing linearization circuit with negative feedback circuit to advance non-linearizafion of bridge-circuit were described. The method of changing floating-point numbers into BCD cede skillfully was stated in C_51 advanced language application. Using linearization-circuit of resistance sensor, utilizing the technology combined software with hare＇ware and grounding technology to improve precision, reliability, security and anti-jamming of measurement and control were put forward.
出处
《仪表技术与传感器》
CSCD
北大核心
2006年第7期51-53,共3页
Instrument Technique and Sensor
关键词
单片机
整流变压器
线性化电路
测控精度
single chip macro-computer
commutated transformer
linearization circuit
precision of measurement and control
