摘要
设计了一个可对任意一路进行定点温度数字显示的多路温度巡检仪,其包含:温度信号检测及放大部分、数字控制部分、A/D转换部分及数字显示四大部分。该系统的工作原理为:AD590传感器将温度信号转化成电流信号,再经放大电路变换成与温度成线性关系的电压信号,再由数字控制电路送到A/D转换器,最后通过数字显示器显示出测量的温度。其测量范围为一55℃～150℃,具有实用性强、可靠性高、测量精度高等特点。
We design a new type digital-temperature-circuit-detect instrument which can show pointing temperature data of either way. It's composed of the next four parts: temperature signal detected and magnified part, digital controlled part, A/D transited part and digital displayed part. The work principal of this system is: first, to transform temperature signal into electricity signal; second, to transform the electricity signal into voltage signal which has linearity relation with temperature; then, the signal is sent to A/D transition instrument by digital control circuit; at last, to display the metrical temperature by digital display. The measure range of this instrument is from -55℃ to 150℃. And it also has the excellence of good practicability, high dependability and precision.
出处
《西南民族大学学报（自然科学版）》
CAS
2003年第4期434-437,共4页
Journal of Southwest Minzu University(Natural Science Edition)
