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Green house Management system has increased the scope of agriculture up to a greater extent. New sophisticated technologies are used to enhance the efficiency and profit from the crop. Real time monitoring and controlling of the environmental parameters are required to maintain the intended environmental conditions. Wireless sensor network is the emerging field which can be used for monitoring and controlling the necessary parameters. In the wireless sensor network the nodes take power from the battery which is of limited capacity. This paper proposed a modal which uses the AODTPC protocol of real time power consumption managing capability. The environmental parameters like temperature and Relative Humidity are monitored and controlled to maintain the intended range inside the green house.

Constitutive equations of piezoelectricity in real life environmental conditions are dependent upon change in temperature, electric field, moisture etc. Piezoelectric coefficient and dielectric constant of piezoelectric materials appreciably change with change in DC bias, AC electric field and temperature. This work discusses variation of piezoelectric coefficient and dielectric constant with electric field and temperature. Graphs have been reproduced from literature to show this variation. Crisp tables showing variation have also been created for ready use.

ObjectiveThe paucity of mechanical ventilators necessitates development of innovative respiratory support devices.MethodsWe developed the Artificial Breathing Capability Device (ABCD) to automate compression of self-inflating bags (SIB), while controlling peak inspiratory pressure (PIP), ventilation rate (VR) and inspiration to expiration time (I:E) ratio (as in a conventional ventilator). ABCD has additional smart features including self-regulatory checks, auto cut-off during cough, endotracheal tube disconnection and blockage alarms, and SIB disconnection alarm. ABCD was tested non-stop for 60 days with 396 user combinations, using adult-size and paediatric-size SIB. The device was evaluated for robustness, reliability and precision.ResultsABCD did not have mechanical, electrical or electronic failures during continuous testing under various ambient conditions, confirming robustness. Reliability and precision evaluated by the proportion of user combinations showing <10% deviation from the set parameters showed: PIP 100%, VR 100% and I:E 84.3% with an adult SIB. The corresponding proportions with a paediatric-size SIB were 85.4%, 100% and 95.5%. With both SIB, the only combinations showing >10% deviation were outside the physiologic range.ConclusionABCD is a safe, efficacious and cost-effective option, which could be considered for adults and children in the context of ventilator shortages especially during the COVID-19 pandemic.