Avian Hatching Monitor and Control System Based on 1-Wire Sensor Groups

System selects temperature sensor DS18B20 and humidity sensor HS1101 to compose sensor groups after analyzing avian hatching requirement, which realizes temperature and humidity automatic monitor and control through 1-wire bus technology. Sensor groups complete field hatching temperature/ humidity monitor and transmit analog signal into digital signal, single chip microprocessor (SCM) AT89C51 as core controller processes it, drives actuators to realize temperature, humidity and turning-over-eggs control. Experiments show that SCM can realize temperature control between 35square and 40square, and control precision is less than plusmn0.3square; humidity measurement range between 0 and 100RH%, and control precision is less than plusmn3RH%, as well as effectively completes automatic turning-over-eggs. Experimentspsila results reveal that system performs well as expected. This paper mainly introduces structure of field hatching monitor and control equipment and parts of hardware/software design in detail. This system can be applied to other areas circumstance monitor, such as intelligent building, etc.