本次设计运用AT89C52单片机，设计了一种自动控制电路,该电路用于太阳热水器。当使用热水器时，可以自动进行温度检测和液位检测，使太阳能自动补水或排水



使用说明:

按”*”键进入设置界面

 　　在设置界面下,按”*”键可转换设置项,设置完成后按”#”键保存并返回监控界面.

 　　水温设置是指上水时当水箱温度低于水温设置值时停止上水,以保证水箱温度达到使用条件.

 　　A、B、C、D键可分别设置上水时限制水位为100 、75 、50 和25 四档。

 　　设置时间限时为30秒，超时自动回到监控界面。

注：在监控界面下，3秒内连按5次A键可强制开/关水,当水位达到设置值时会自动停止上水.

-The design using AT89C52 microcontroller design an automatic control circuit, the circuit for the solar water heater. When using a water heater, you can automatically temperature measurement and liquid level detection, solar automatic water or drainage Instructions for use: Press the " *"　key to enter the settings in the settings interface, the interface 　Press " *"　key can be converted setting, set to complete press " #"　key to save and return to the monitor interface 　water temperature set refers to the Sheung Shui Sheung Shui stop when the tank temperature is lower than the water temperature set value, to ensure that the tank temperature reaches conditions of use. 　A, B, C, D keys limited water level can be set Sheung Shui to 100 , 75 , 50　and 25　of fourth gear. 　set the time limit of 30 seconds, the timeout is automatically back to the monitor interface. Note: The monitoring interface, within three seconds even 5 times th