This paper introduces a intelligent control system which can survey the heat energy

demonstrate and control the room temperature. Based on the low-power chip

MSP430F249

the system can precisely survey the quantity that heat energy release by surveying the flow velocity of fluid with the time difference when ultrasonic spread in fluid with the help of high-precision time-digital converter chip

TDC-GP22

as well as the temperature difference of fluid loop with the help of platinum resistance temperature sensor PT1000.It also collects the room temperature and demonstrates it simultaneously

accepts the set commands from users and controls the start data of thermostat valve voluntarily so as to achieve the function of intelligent temperature control. The test result indicates that this system is of low overall-power loss

high accuracy for measuring and precise controlled temperature.