摘要
本文具有对一次仪表转换系数进行校准的功能,温度补偿及模数转换电路设计方法独特,只用一块运算放大器与一块单片模数转换电路完成了pH转换功能。
In this paper has had a function for calibrate to the conversion coefficient of primary instrument.
So it is particular at the design philosophy of circuit of temper' ature equalizer and A/D circuit that it has completed a conversion function of pH, And been equiped a computing amplifier and a change-over circuit of A/D only.
关键词
酸度计
模数转换器
电路设计
pH Meter Analog-to-digital converter Circuit desin
