基于MC9 S12 XS128的水温加热控制系统设计

本系统设计以温度传感器DS18B203]、电桥测重传感器和MC9S12XS128最小系统2]为核心1],使用220V AC电源加热水壶中的水。本设计具有温度测量功能、液位测量功能,可显示温度和液位数值。测温分辨误差不大于0.5℃,液位测量误差不大于5mm。具有液位上限、下限报警功能,可以设置报警点,液位低于下限或高于上限时,发出声音报警并禁止加热。具有分段程序控制功能,可分段设置控温值和保温时间,升温速度不小于10℃·min-1,控温误差不大于0.5℃。

Design of Temperature Control System Based on MC9S12XS128

The system design is based on a bridge weighing sensor and temperature sensor DS18B20,MC9S1-2XS128 minimum system as the core, the use of 220 V ac power to heat the water in the kettle, with functions of temperature measurement and liquid of level measurement. Temperature measuring resolution error is not more than 0. 5℃, liquid level measurement error is not more than 5 mm. With functions of liquid level upper limit and lower limit alarm, emergency alarm can be set, liquid level below the lower or higher than the ceiling, sound alarm and banned heating. With segmented control functions, can be seg- mented setting value of temperature con-trol and heat preservation time, heating speed is not less than 10℃·min-1 , temperature control error is not more than 0. 5℃.