本文介紹由AD590 集成溫度傳感器和80C51 單片機組合應用開發的實用高精度智能
恒溫加熱器電路。重點闡述系統構造、工作原理。同時對AD590 特性、硬件設計和軟件設計也做了介紹。該系統體積小、成本低、精度較好、容易實現，有很高的實用價值。
關鍵詞：恒溫加熱器；AD590；80C51 單片機
Abstract: This article introduces the circuit of stable temperature thermostatically heater of
practical use, high sophistication and intelligence, which is developed with application of an
AD590 temperature sensor and an 80C51 microprocessor. It focuses on explaining structure of the system and the working theory of the heater. It also describes the characteristics of AD590, the hardware design and the software design. The heater has characteristics of little volume, low cost, high accuracy, easy actualization, hence of high practical value.
Keywords: thermostatically heater, AD590 temperature sensor and the 80C51 microprocessor