# Mechanical Design and Testing of Mobile Monitoring Units for Security Systems
## 5 Conclusions  
During the current analysis, it was proven that a similar type of mobile monitoring security system has not been used commercially before now. Research on mobile monitoring systems has mainly been focused on applications other than security, often with no need to consider vector measurements. On the other hand, security systems are usually not mobile, and nowadays, attention is mainly paid to cybersecurity. Therefore, our article was focused on the development of the structural design of a mobile monitoring unit. For this purpose, progressive technologies in the field of CAD/CAM/CAE were applied, with an emphasis on the strength and stability of the structure, the verification of the behavior of the structure under different conditions using numerical simulations, and the optimization of individual structural elements and nodes using generative designs, with an emphasis on minimizing the weight of the structure itself and maintaining the required strength.  
The structure was designed and made from common and affordable semi-finished products. Possible repairs are also made easier thanks to the availability of spare parts. The adjustable legs, included to offer the possibility of placing the mobile monitoring system in uneven terrain conditions, and the different holders allowing the attachment of various types of sensors, are also parts of the mobile monitoring system's design. The mechanical design is simple, light, mobile, resistant to humidity, and implementable in a modular way. The main contributions of this work involve not only the construction design itself, but also the numerical analyses performed on the simulation models created, which allowed us to perform many types of analysis, including modal analysis and frequency analysis, so as to determine the frequency and its temperature dependence, thus enhancing the vectorial sensor signal pre-processing and precluding false alarm situations. The simulation results were subsequently confirmed by experimental measurements. A scientific approach was also applied to determine the windy conditions that the mobile monitoring units can withstand.  
Conceptualization, K.S., M.F. and K.D.; methodology, K.S., M.F., J.N. and J.K.; validation, M.F., J.N. and J.K.; formal analysis, K.D. and J.N.; investigation, M.F. and J.N.; data curation, M.F., J.N. and J.K.; writing--original draft preparation, K.D.; writing--review and editing, K.D.; visualization, K.S., M.F. and K.D.; supervision, K.S. and K.D.; project administration, K.S. and K.D.; funding acquisition, K.S. and K.D. All authors have read and agreed to the published version of the manuscript.  
This research was supported by the Research Agency ITMS 2014+ code numbers 313011 AUP1 and 313011T557, co-funded by the European Regional Development Fund under the Operational Program Integrated Infrastructure, by the Slovak Research and Development Agency, grant number APVV-18-0248 and by the VEGA 1/0101/22 project.  
Not applicable.  
The raw data supporting the conclusions of this article will be made available by the authors on request.  
The authors declare no conflicts of interest.