Video-based fire detection recognized for the first time

The guiding principle of the fire detection industry is: the earlier a fire is detected, the faster the fight can begin and, of course, the less damage is caused. This rapid detection is difficult for classic detectors in large-dimensioned rooms (such as aircraft hangars, warehouses), many areas of wood and paper processing with their usually immense fire loads, and in dusty and humid environments (e.g., recyclables processing plants, textile production halls, parking garages).

Individual test agreement

Especially for the protection of these critical areas, Bosch Sicherheitstechnik GmbH has developed the "Aviotec IP Starlight 8000", a system that detects flames and smoke directly at the source using video technology, writes the company. VdS. In order to be able to clearly prove the reliability of its invention in international markets, Bosch applied for VdS recognition of its video technology. Laboratory engineer Philipp Mondrik explains, "As a basis for testing video fire detection products, no European standards or coordinated technical regulations exist yet." In such a case, the possibility of an individual test agreement is offered. Together with the manufacturer, VdS had analyzed the functionality of the invention in order to develop a valid, own test procedure, which makes the reliability of this special product assessable and thus provable. "VdS-approved is now the fire detection in the form of an algorithm, which is integrated into the camera itself. Aviotec is intended to supplement existing systems, especially where classic detection technology is not exclusively suitable. Of course, this singular VdS test procedure also included reliability tests under difficult environmental conditions as usual, as well as confirmation of long-term functional safety," Mondrik emphasizes.

"Thanks to intelligent algorithms, our video-based fire detection can distinguish between real fire and disturbance variables such as reflections, movements or backlighting, which enormously reduces false alarms," informs Bosch developer Sören Wittmann. "And HD image quality supports on-site personnel in alarm verification. The cameras also don't require individual power supplies when using PoE models, which significantly reduces costs."

Testing agreement forms the basis

VdS engineer Mondrik points out, "Aviotec technology, similar in design to facial recognition in burglary protection, identifies EN 54 test fires wood smoldering fire, polyurethane, ethanol and decalin even in difficult lighting conditions up to seven lux. It also detects the characteristic movement and shaping of rising and diluting smoke in the surrounding air."

If other VdS partners require, their own guidelines for video-based fire detection could be created in the future on the basis of the newly developed test agreement. Often, the VdS guidelines would then also form the basis of European safety standards, the institute concludes.