An Austrian park lighting device is equipped with acoustic sensors designed to respond to nocturnal antisocial behaviour and increase security.
The park, located in Graz City, has six outdoor lights in the park with motion detectors and noise sensors, four of which have motion detectors installed, and two with noise sensors, dimming to 20% standard levels. When one of the motion detectors senses any type of motion, the dimming is immediately raised to 50%.
If one of the noise sensors senses any noise, the lighting of the area is raised to 100%.
When the sun goes down, the light level will accompany the whole process of pedestrian walking, when pedestrians pass, the front of the lamp will light up, and the lamp behind will be darkened after a certain period of time.
As a result, any activity within the park can be immediately perceived to make pedestrians feel safer.
The lamp is controlled by an intelligent networked lighting control system, which activates the lamp through the radio module when the sensor detects noise or movement of objects. The software will also show the energy-saving effect of the new lighting solution, as the pilot project now saves about 60% of its energy compared to the original luminaire.
A nearby gateway enables the communication between the luminaire and the network server.
The control system can also support the gathering of information on a number of elements, including noise levels, weather conditions and staff mobility. Analyzing the data may eventually provide more useful opportunities. Siegfried Nagl, Mayor of Graz, said, "This project shows how we can bring the park into the digital age, so as to maximize security", "since the installation of new lamps, the park has not seen any damage." ”