【摘要】 采用ADI公司嵌入式单片机系统ADuC812完成了微型 pH计的设计 ,并在电极信号转换中采用了双高阻差分输入法提高了信号的抗干扰能力 ,同时应用了DS18B2 0一线温度传感器实现自动温度补偿 ,设计了交直流自动转换装置 ,提高了仪器在不同环境下使用的适应性。更多还原

【Abstract】 Asubminiature pH meter is designed using embedded SCM system ADuC812 of ADI company,and double high-impendence difference input method is applied during conversion of electrode signal to improve the anti jamming capacity of signal,at the same time,the application of DS18B20,one line temperature sensor,accomplishes automatic temperature compensation.In this instrument,the AC DC automatic conuersion setting is designed,which enhances the adaptability to various conditions.更多还原