# Integration of Autonomous Wireless Sensor Networks in Academic School Gardens
## 5 Conclusions  
In this work, an environment to enhance School Garden observation for educational purposes in primary school has been presented. The system is formed by a set of autonomous wireless sensor nodes, which transmit information to a cloud capable platform. The selected nodes, the EnOcean STM 330 modules, present very interesting features compared to the typical ISM 2.4 GHz ZigBee nodes used in the literature in order to monitor agricultural tasks: They are self-powered by an incorporated small solar cell, the whole wireless node (sensors plus wireless transceiver) is very small and the operation frequency of 868.3 MHz gives a longer range of direct communication.  
Pre-deployment deterministic wireless channel analysis results have been obtained by means of 3D Ray Launching in-house simulations in order to estimate coverage relations for the proposed wireless communication system. Operation is feasible for both operating frequencies, in which the communications between point to point links for the employed star network configuration are fulfilled in terms of receiver sensitivity thresholds. Moreover, the influence of persons within the school environment has also been taken into account, revealing that it is a key issue since the overall losses due to human body presence reduces significantly the effective coverage range of the system.  
On the other hand, an ad-hoc application called MySchoolGardenApp has been implemented, in order to monitor and process the obtained observation data from the sensors located on a garden located within the school yard of a primary school. The app offers different GUIs and possibilities depending on the user's profile (Administrator, Teacher or Student), which make the app flexible and simple to use. Initial testbed results have been obtained, showing the feasibility of the proposed system, which can provide multiple and adaptive results, tailored to the specific classroom needs.  
It is important to note that feedback regarding the system operation and the MySchoolGardenApp is missing for the case when academic activities are being carried out, which will be determinant in order to validate the proposed solution and develop further work. Future developments of this work are the application of the presented system to higher educational levels, such as university courses, monitoring the crops used for agronomical engineering studies (which will have more difficulties  
Figure 13: MySchoolGardenApp GUI. (**a**) Teacher profile GUI; (**b**) Student profile GUI.  
due mainly to the big surfaces they occupy) and the adaptation of the application to such university course levels.  
Conceptualization, P.L.-I. and F.F.; Methodology, P.L.-I., L.A. and F.F.; Software, M.C.-E. and J.J.A.; Validation, P.L.-J., E.A. and J.J.A.; Investigation, P.L.-I.; Data Curation, P.L.-I. and L.A.; Writing-Original Draft Preparation, P.L.-I. and M.C.-E.; Writing-Review & Editing, P.L.-I. and F.F.; Visualization, E.A. and M.C.-E.; Supervision, F.F.; Funding Acquisition, F.F. and J.V.  
The authors would like to acknowledge the support and funding of the project PRO-UPNA17 (6100).  
The authors declare no conflict of interest. The founding sponsors had no role in the design of the study; in the collection, analyses, or interpretation of data; in the writing of the manuscript and in the decision to publish the results.