首页|STUDY ON MODULARIZED ENVIRONMENTAL CONTROL SYSTEM FOR CLOSED-TYPE POULTRY HOUSE
STUDY ON MODULARIZED ENVIRONMENTAL CONTROL SYSTEM FOR CLOSED-TYPE POULTRY HOUSE
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NSTL
Traditionally, open-type poultry production systems were widely used in Taiwan. However, it might easily cause poultry to mass death due to infectious avian influenza carried by migratory birds. Poultry producers want to strengthen biosafety protection, but they are still facing problems such as labor shortage, aging workforce, and increased costs. Therefore, it is necessary to design an automatic control system for closed-type poultry houses. The developed environmental control system includes a control unit and a sensing unit. The system integrates the human machine interface(HMI) and the wireless sensor module with the programmable logic controller (PLC) to operate the environment control system. It gives the waterfowl a stable environment to grow. The wireless sensor module is optimized with its stability and precision in the observation of livestock environment. The environmental control system of this research was installed at a closed-type poultry house in Yilan. The wireless sensor module was tested and operated for one year to establish weather resistance. The module's effective average transmission rate reached 99.88%, which can stably collect environmental information. It is used as reference factors for environmental controls. According to the breeder experience and the literature review, the environmental control system is controlled under the fan-and-pad system, fogging system and forced ventilation system to study the performance of cooling systems. The environmental control system mode uses composite environmental factors control and intermittent time-set technique by fogging system control. The results of the fan-and-pad system showed that the cooling effect was the best. When the outdoor temperature was 34.1℃ and the relative humidity was 62.0%, referring to Psychrometric Chart, the wet-bulb difference was 6.3℃ and the actual indoor temperature was decreased by 6.0℃. Finally, in response to the management benefits of the poultry house, the designed environmental control system can be remotely monitored. Since the user interface instantly displays environment status, the risk of pollution caused by personnel can be much avoided which leads to a more precise and better systematic control.
STUDY ON MODULARIZED ENVIRONMENTAL CONTROL SYSTEM FOR CLOSED-TYPE POULTRY HOUSE
Laying duckEnvironmental control systemWireless sensingModularity
NSTL
