Design and Development of Online System for Monitoring Harmful Gas in Animal House

In this paper, an electrochemical sensor was designed to monitor the harmful gas on-line in the animal house. The system used a single collector structure of multi-sensor, which could monitor the concentration of ammonia and hydrogen sulfide at different areas in the animal house. Hardware and software of the sensor-driven circuit, sensor node and data collector were designed and introduced. This system was tested in the animal house for monitoring the concentration of ammonia and hydrogen sulfide. Experimental results implied that the communication success rate between the system node and collector could reach 95%. So the sensor could be continuously monitored the change of harmful gas and important for the control of ecological environment in the animal house.