The A pins and B pins are interchangeable. Out of the two H pins, one pin is connected to supply and the other to ground This pin outputs 0-5V analog voltage based on the intensity of the gas You can also use this sensor to get digital output from this pin, by setting a threshold value using the potentiometer
Used to connect the module to system ground This pin powers the module, typically the operating voltage is +5V International Journal of Engineering Trends, Technology (IJETT), 4(7), 3149–3153. Wireless communication systems underground mines-A critical appraisal. In 1st international conference on recent advances in information technology RAIT (pp. A wireless surveillance and safety system for mine workers based on Zigbee. Tanmoy, M., Partha Sarathi, D., & Mithu, M. In Proceedings of the 2007 IEEE international conference on networking sensing and control, London UK (pp. Deploying a wireless sensor network on the coal mines. Xiaodong, W., Xiaoguang, Z., Zize, L., & Min, T. Wireless communication and environment monitoring in underground coal mines-Review. In Proceedings of the fifth annual conference on communication networks and services research (CNSR ‘07) (pp. Security monitoring using wireless sensor networks.
This work is focused on the design of such a prototype model for the underground mines with the aforementioned specification.Ībdellah, C., Paul, F., & Pierre, M. Other function of this device will be to transmit the data sensed by the sensors in the device to the control room wirelessly so that the responsible person would be aware of the situation. The proposed work has a unique feature that it will make the personnel aware about the situation of the gases present and surrounding by automatically generating different alarms and different light indicators. Each node of the network placed over the safety gear (helmet wore statutorily by every miner) comprises of various sensors depending on the requirement with microcontroller unit and other low power accessories.
This work introduces the application of mobile wireless sensor network in order to monitor a variety of parameters in underground mines which have life threatening effects towards them. Wireless data and communication network is also not successful because wireless communication in underground mine is significantly more challenging than through air. Though many existing safety gadgets are there but they could not work reliably because of the typical nature of mines structure and production variability. Among the various causes of accidents in underground mine, major one is presence of flammable and noxious gases. Underground mining production process is vulnerable and highly dynamic in nature.
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