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介绍了如何将单片机应用于温度测量与控制系统中，使测量和控制智能化。系统的核心部件是 89C51单片机。首先建立控温模型，通过硬件的合理配置及用软件选择合适的加热模式，使控制满足模型中不同阶段的要求。系统采用一致性好、精度高的热敏电阻作为测温元件。更换测头不需要调整硬件或软件，性能稳定可靠。用光隔控制可控硅的导通与截止，从而控制加热电压的通与断，使控制具有灵敏、可靠、抗干扰能力强等优点。本系统测温、控温精度高，达到设定温度所需时间短。
Introduced how to apply SCM to the temperature measurement and control system to make the measurement and control intelligent. The core of the system is 89C51 microcontroller. First, the establishment of temperature control model, through the rational allocation of hardware and software to select the appropriate heating mode, the control to meet the requirements of different stages of the model. The system uses a good consistency, high precision thermistor as a temperature measurement device. Replace the probe does not require adjustment of hardware or software, stable and reliable performance. Controlling the conduction and cut-off of silicon controlled by light, thus controlling the on and off of the heating voltage, so that the control is sensitive, reliable, strong anti-interference ability and so on. The system temperature, high temperature control accuracy, the time required to reach the set temperature is short.