1. URSI Session "Large Scale Science Projects: Europe – Africa Connects" The 11 th IEEE AFRICON conference, September 9 – 12, 2013, Mauritius ndjuric@uns.ac.rs http://semont.ftn.uns.ac.rs Ministry of Education, Science and Technological Development The Concept of the SEMONT Monitoring System and its Influence on the EM Pollution Protection Nikola Djuric Faculty of Technical Sciences, University of Novi Sad

2. The Concept of the SEMONT Monitoring System and its Influence on the EM Pollution Protection Concept Broadband Bands Field register Exposure Utilization Web portal Conclusion 2/15 Content  The concept of the SEMONT monitoring system.  The broadband monitoring approach.  The monitoring bands.  The EM field register.  The exposure assessment approach.  The SEMONT system utilization.  Internet web portal.  Conclusion.

3. The Concept of the SEMONT Monitoring System and its Influence on the EM Pollution Protection Concept Broadband Bands Field register Exposure Utilization Web portal Conclusion 3/15 The SEMONT system concept  Serbian electromagnetic field monitoring network – SEMONT. Fig. 1. System implementation over the area of interest. Concept

4. The Concept of the SEMONT Monitoring System and its Influence on the EM Pollution Protection Concept Broadband Bands Field register Exposure Utilization Web portal Conclusion 4/15 Broadband monitoring approach  Provide information on the overall EM field level, without considering which sources are active over the area. Fig. 2. The broadband isotropic EM field monitoring. Broadband

5. The Concept of the SEMONT Monitoring System and its Influence on the EM Pollution Protection Concept Broadband Bands Field register Exposure Utilization Web portal Conclusion 5/15 The monitoring bands  The SEMONT sensor nodes performs broadband monitoring in multiband frequency ranges. Fig. 3. The monitoring bands. Bands

6. The Concept of the SEMONT Monitoring System and its Influence on the EM Pollution Protection Concept Broadband Bands Field register Exposure Utilization Web portal Conclusion 6/15 The EM field register (1/2)  The SEMONT system employ broadband measurements in combination with continuous monitoring, offering a history overview of field fluctuation during a period of time. Fig. 4. The broadband isotropic EM field monitoring. Field register

7. The Concept of the SEMONT Monitoring System and its Influence on the EM Pollution Protection Concept Broadband Bands Field register Exposure Utilization Web portal Conclusion 7/15 The EM field register (2/2)  The SEMONT system is intended for remote, the 24 hours a day monitoring, utilizing sensor nodes with considerable internal memory, solar panel and rechargeable batteries. Table. 1. Memory and monitoring period of the sensor. Sampling intervalMonitoring duration 30 sec5 days 1 min10 days 2 min20 days 6 min60 days 15 min169 days Field register

8. The Concept of the SEMONT Monitoring System and its Influence on the EM Pollution Protection Concept Broadband Bands Field register Exposure Utilization Web portal Conclusion 8/15 The exposure assessment approach (1/3)  Generally, the conventional measurement requires an extrapolation to the maximum power of source, since the “worst case” method is the only way to gain information on the exposure level that can be present in some area. Fig. 5. Example of extrapolation of EM field level. Exposure

9. The Concept of the SEMONT Monitoring System and its Influence on the EM Pollution Protection Concept Broadband Bands Field register Exposure Utilization Web portal Conclusion 9/15 The exposure assessment approach (2/3)  The continuous measurements overcame the problem of missing the period of the most intensive radiation of sources. The SEMONT monitoring is performed during the 24-hours period. Fig. 6. Daily limits of the global exposure ration (GER) assessment. Exposure

10. The Concept of the SEMONT Monitoring System and its Influence on the EM Pollution Protection Concept Broadband Bands Field register Exposure Utilization Web portal Conclusion 10/15 The exposure assessment approach (3/3)  Exploiting an approach of continuous monitoring, the SEMONT system assesses the GER and calculates lower and upper limits of daily exposure, according to the Serbian prescribed limits and ICNIRP recommendations.  For high-frequency electric field:  For the low-frequency magnetic field:  where real exposure will be in the range Exposure

11. The Concept of the SEMONT Monitoring System and its Influence on the EM Pollution Protection Concept Broadband Bands Field register Exposure Utilization Web portal Conclusion 11/15 The SEMONT system utilization (1/2)  The low-frequency application – overhead power lines are well known sources of the low frequency magnetic and electric field. Fig. 7. Monitoring field near overhead power lines. Utilization

12. The Concept of the SEMONT Monitoring System and its Influence on the EM Pollution Protection Concept Broadband Bands Field register Exposure Utilization Web portal Conclusion 12/15 The SEMONT system utilization (2/2)  The high-frequency application – the EM fields register simplifies procedure of the first and periodic testing of the radiation sources, as well as licensing the installation of new sources. Fig. 8. Testing of the radiation sources. Utilization

13. The Concept of the SEMONT Monitoring System and its Influence on the EM Pollution Protection Concept Broadband Bands Field register Exposure Utilization Web portal Conclusion 13/15 Internet web portal (1/2) Fig. 9. Presentation of the measurement results. Web portal

14. The Concept of the SEMONT Monitoring System and its Influence on the EM Pollution Protection Concept Broadband Bands Field register Exposure Utilization Web portal Conclusion 14/15 Internet web portal (2/2) Web portal Fig. 9. Presentation of the measurement results.

15. The Concept of the SEMONT Monitoring System and its Influence on the EM Pollution Protection Concept Broadband Bands Field register Exposure Utilization Web portal Conclusion 15/15 Conclusion  The SEMONT system introduces an approach of wireless sensor network utilization for a daily supervision of overall and cumulative EM field level.  The SEMONT system is able to offer respectable answers regarding the public concerns on actual and long-term exposure to EM radiation.  The system provides information on the overall EM field level at any instant of time, without considering which EM sources are present and active over the observed area.  It is convenient if it is necessary to inform the general population, without technical knowledge on EM field sources.  The SEMONT system could be a significant support for the local authorities in their efforts to perform systematic care considering health effects of non-ionizing radiation. Conclusion