Ground Source Heat Pump Residential Central Air-Conditioning Control System Research And Design Based On CAN Bus

Recent years, with the economy and information technology rapid development , the continuous use of energy, energy and environmental issues increasingly prominent. With the continuous improvement quality of life, as traditional appliances, air conditioning gradually towards to low noise, energy saving, environmental protection, and multi-functional direction, achieves comprehensive, intelligent, digital is general trend.Ground source heat pump using shallow underground geothermal energy to heat but also refrigeration and is a energy-efficient air conditioning system, to solve air conditioning system's energy-saving and environmental issues comes into being. In some foreign developed countries, economic conditions are good,large area of housing, in some not central heating remote villa,residential central air conditioning has become family essential products.This paper describes the development of ground source heat pump status and trends, analyzes the feasibility and necessity of residential central air conditioning, and then explains the concept of ground source heat pump air conditioning, classification and work. Introduces CAN bus transmission principles and protocol in detail,selects ST's STM32F103 as main controller, briefly describes the IAR compiled environment.Describes air conditioning system's water system and temperature control system design requirements and control in detail.Finally, gives system hardware circuit design, data structure design and CAN bus data send and receive software program. The entire system program around a parameter table that contains all the parameters of system, achieves data storage and reading.