Proposição de critérios para câmeras de segurança em projetos de CFTV indoor para fins de monitoramento

Abstract

CCTV (Closed Circuit Television) systems are used as a form of security measure by companies, public bodies, businesses and homes through live monitoring of images and recording them, which serves as legal evidence in possible civil and criminal cases. However, the lack of adequate design and planning in the development and installation of these systems causes serious problems such as: poor image quality that makes it impossible to identify people and vehicles, as well as its validity as expert evidence; blind spots that serve as vulnerabilities to be exploited in criminal actions such as robbery, theft, aggression, among others; delay in the presentation of images, and thus reduces the time for the operator or whoever monitors the system to make the appropriate response. As a way to solve, or at least minimize the consequences of these problems, it is necessary to use technical criteria to design the system and follow good installation practices during the execution of the project. The objective of this work is to define the minimum project requirements based on the European standard IEC 62676 part 4, whilst complying with what was determined by parts 1 and 2 of the same. The standard is made up of 4 parts, with: part 1 defining general requirements for video surveillance systems; part 2 that regulates interoperability between IP, Web, HTTP and REST services; part 3 that standardizes analog and digital video interfaces; and part 4 which is an application guide for CCTV projects. The following criteria were chosen to achieve the objectives of the CCTV system: resolution, opening angle, focal length and installation height; lighting; transmission and storage.