Dragan KUKOLJ, Jasna MASTILOVIĆ, Žarko KEVREŠAN, Gordana OSTOJIĆ, Stevan STANKOVSKI, Sandra NEMET, Dragana UBIPARIP SAMEK, Marina ĐERIĆ
A review of abilities in the domain of patent analysis accompanied by the creation of the portfolio technology space using International Patent Codes multidimensional clustering for patent portfolio in the field of blockchain application in the food supply chain is presented. Relatively small patent portfolio of 82 documents out of which 84% are pending applications was obtained pointing out that patenting in the field of application of blockchain in the food supply chain is relatively in the initial phase with China, India and USA as leaders in this field. Multidimensional scaling with k-means clustering algorithm applied with a requirement for three clusters to be generated resulting in a regular and almost linear separation between patent clusters. The differences of topics covered by the three clusters were analysed on the basis of the most frequent IPC codes within the cluster and the most valuable patents within clusters on the basis of family size and forward citations were identified.
Zdravko STANIMIROVIĆ, Ivanka STANIMIROVIĆ, Slobodanka GALOVIĆ, Katarina ĐORĐEVIĆ, Edin SULJOVRUJIĆ
One of the critical characteristics of machine plants is safety at work. Safety barriers are one of the measures to reduce risk at work. Barriers are often used when controlling access to zones of increased danger is necessary. The type of protection depends on the type of industrial plant, risk assessment, and applicable regulations. To achieve the desired functionality, proper application and complete integration of the protection system into an existing management system are necessary. The paper shows the structural solution of the protection system in the printing plant of the “Tetra Pak” company from Gornji Milanovac. To meet the requirements, it is necessary to determine the required SIL (System Integrity Level) from the reference standard and determine the electronic components properly.
Lenka BRESTOVAČKI, Vladimir RAJS
Due to the development of technology, there is an increasing need for remote control of facilities. This is what the Internet of Things (IoT) enables us to do. There was also a need to educate students in the direction of IoT systems. In the limited hardware conditions available to every student, it is necessary to design a system that will include all the principles of the IoT system. This paper describes how to implement one such work with minimal hardware resources and its development into a real application. There was implemented a system for remotely controlled house lighting using the Raspberry Pi platform, BH1750 sensor, ThingSpeak IoT platform, and Node-red development tool. In the improved version of the system, there was the Raspberry Pi platform as a server, and sensors were connected to the ESP8266 module. The system uses HTTP and MQTT protocols. The authors suggest improvements to the system by using LoRaWAN and NB-IoT protocols and cyber security systems.