我们采用8039等常见器件构成的最小单片机硬件系统,实现了常规远红外食品烤箱的测温、控温、定时、恒温保持和加热方式选择等多种功能。测温敏感元件选用了MF-51型玻封双支热敏电阻器,该器件具有精度高、稳定性好、抗老化和响应速度较快等特点。当烤箱内部的实际温度发生变化时,热敏电阻的阻值R_t发生非线性变化。用市售单片555集成电路为主体构成多谐振荡器,它的振荡频率为 We use 8039 and other common devices constitute the smallest SCM hardware system, to achieve a conventional far-infrared food oven temperature, temperature control, timing, constant temperature and heating options such as a variety of functions. Temperature-sensitive components selected MF-51-type glass sealed double thermistor, the device has high precision, good stability, anti-aging and fast response characteristics. When the actual temperature inside the oven changes, the thermistor resistance R_t nonlinear changes. Monolithic 555 integrated circuit with the market as the main body to form a multivibrator, its oscillation frequency