| Title |
A Study on the USN Zigbee Sensor Node for Transmission to Harmful Gas(CO, CO2) Sensing Data |
| Authors |
천동진(Cheon, Dong-Jin) ; 박영직(Park, Young-Jik) ; 이승호(Lee, Seung-Ho) ; 김정섭(Kim, Jeong-Seop) ; 곽동걸(Kwak, Dong-Kurl) ; 정도영(Jung, Do-Young) |
| Keywords |
Zigbee Sensor Node ; Zigbee Protocol ; Wireless Communication ; Harmful Gas ; N-DIR CO_2 Sensor |
| Abstract |
In this study, Zigbee Sensor Node to transmit harmful gases CO and CO_2 information using wireless communication within the ground and underground structures were developed. Wireless communication protocol was used Zigbee Stack included IEEE 802. 15.4 MAC protocol. For wireless transmission of detected harmful gas signal from ADC of MCU was implemented Zigbee Sensor Node that was developed protocol using Serial-Port-Profile(SPP) here. The proposed Zigbee Sensor Node was verified transmission distance from experiments. Transmission distance was into 90m in experiments. Distance experiments were measured at 10m intervals using sine & pulse wave input signal at indoors. The proposed Route Sensor Node was applied mesh routing protocol. When built up USN(Ubiquitous Sensor Network)using Route Sensor Node, transmission distance was not limited. On the experimental results, harmful gas values between direct measurements and USN measurements were consistent. The semiconductor CO sensor and N-DIR CO_2 sensor module as a harmful sensor was used. Therefore, the proposed Zigbee Sensor Node was verified about reliability and validity to build USN for transmission of harmful gas information. |