Cultural Heritage and Environment Research Center ILIA STATE

Cultural Heritage and Environment Research Center ILIA STATE UNIVERSITY, GEORGIA Io. T systems for the study of cultural heritage monuments, case of Uplistsikhe monument, Georgia Nikoloz Vacheishvili, Giorgi Basilaia, Tea Munchava, David Kvavadze, David Chkhaidze, and Mikheil Elashvili Ilia State University, I. Chavchavadze ave. 3/5, Tbilisi, Georgia This work was supported by Shota Rustaveli National Science Foundation of Georgia (SRNSFG) [Grant Number fr 17_90] NH 6. 4

Uplistiskhe cultural heritage monument and it’s Problems • Cultural heritage monuments, that were created by mankind for centuries are scattered throughout the world • Many of the monuments are facing the critical condition and require diagnostics, study and planning, and management of conservation/rehabilitation works • Uplistsikhe is one of the oldest monuments in Georgia (BC. VI-IV Century) • Due to the impact of environmental factors such as temperature, humidity, precipitation, the existence of complex structure of cracks, infiltrated water and runoff water streams, together with active tectonics in the region, Uplistsikhe rock-cut city monument located in the central part of Georgia faces problems and permanent destruction. This work was supported by Shota Rustaveli National Science Foundation of Georgia (SRNSFG) [Grant Number fr 17_90] Cultural Heritage and Environment Research Center ILIA STATE UNIVERSITY, GEORGIA

Uplistiskhe cultural heritage monument Wireless sensor network distribution Location of sensors in Uplistsikhe rock cut city monument This work was supported by Sh. Dota Rustaveli National Science Foundation of Georgia (SRNSFG) [Grant Number fr 17_90] • In parallel with technological development, it is now possible to conduct complex monitoring of the environment parameters in real-time using sensor systems, data acquisition, communication networks, data visualization, and processing methods. • Study of cultural heritage monuments, may have limitations such absence of electricity or communication wiring or the limitation of works without damaging the monument itself. So, there is a rising need of low power wireless sensor acquisition and transmission systems. • Measurement points were selected where several parameters (Temperature, Humidity, Crack meter value) are acquired and sent to the central information platform using the socalled Internet of things. Cultural Heritage and Environment Research Center ILIA STATE UNIVERSITY, GEORGIA

Wireless sensor network measurement equipment Crackmeter (potentiometer) Temperature & Humidity Sensor Weather Station sensors: Temperature, Humidity, Pressure, Wind speed, Wind direction, Gust speed, Solar Radiation, Rain This work was supported by Sh. Dota Rustaveli National Science Foundation of Georgia (SRNSFG) [Grant Number fr 17_90] Cultural Heritage and Environment Research Center ILIA STATE UNIVERSITY, GEORGIA

Wireless sensor data transmission network and modules LORA RA-02 Module GSM/GPRS Module Data Communication and Processing This work was supported by Sh. Dota Rustaveli National Science Foundation of Georgia (SRNSFG) [Grant Number fr 17_90] Cultural Heritage and Environment Research Center ILIA STATE UNIVERSITY, GEORGIA

MAXIOT Internet of Things management platform This work was supported by Sh. Dota Rustaveli National Science Foundation of Georgia (SRNSFG) [Grant Number fr 17_90] Cultural Heritage and Environment Research Center ILIA STATE UNIVERSITY, GEORGIA

Data Visualization and alarm system based on GRAFANA • Central web-built system that is based on open platform Grafana is responsible for the data storage, visualization, processing, and alarm generation • The system is available on the web and can be accessed from anywhere • Data is analyzed daily automatically 27/7 x 365 Online data (Microclimate, Crack meters) This work was supported by Sh. Dota Rustaveli National Science Foundation of Georgia (SRNSFG) [Grant Number fr 17_90] Cultural Heritage and Environment Research Center ILIA STATE UNIVERSITY, GEORGIA

Data Visualization and alarm system based on GRAFANA • The statistical processing of acquired data resulted in the calculation of the parameter ranges. • Calculations were made on the 24 -hour data of each day to calculate the variations. • First the maximal and minimal recorded values were identified, then the difference between maximums and minimums were calculated. Additionally, the mean values and the standard deviations were calculated resulting to the ranges considered as normal, excessive, dangerous, and critical parameters. • These parameters were integrated into the web-system Alarm Gauges for the crack meters with 4 ranges This work was supported by Sh. Dota Rustaveli National Science Foundation of Georgia (SRNSFG) [Grant Number fr 17_90] Cultural Heritage and Environment Research Center ILIA STATE UNIVERSITY, GEORGIA

Results • In case of dangerous and critical parameters the system can distribute alarm state information via several channels such as email, chat message, SMS, or other means. • The alarm trigger data will be recalculated to receive the updated parameters of the statistics every 6 months. • As a result, the low power wireless system sensor measurement system based on Internet of Things was created that sends acquired data to the cloud-based web platform with the possibility of the data processing and issuing alarms. Sample Alarm Messages on messenger This work was supported by Sh. Dota Rustaveli National Science Foundation of Georgia (SRNSFG) [Grant Number fr 17_90] Cultural Heritage and Environment Research Center ILIA STATE UNIVERSITY, GEORGIA