|
Public Address and Voice Alarm Services |
|
||
|
l Home l Public Address l Voice Alarm l Network Audio l Induction Loop l Disabled Refuge l Design & Maintenance l |
|||
|
Heysham 1 Power Station |
|||
 |
|||
|
PAVA Services have just completed an upgrade of Heyham 1's 'Simulator Link'. This is an audio connection between Heysham 1's voice alarm system and their control room simulator suite located at Heysham 2. The link allows the trainees at the simulator to make announcements over the Heysham 1 site during emergency training exercises. PAVA Services provided two solutions to replace the existing digital audio broadcast equipment which utilised X21 as the transmission protocol. Both proposals were based on an IP solutions and the client opted for a system using QSC Audio's RAVE 522ua digital signal processors. This option was selected over a cheaper alternative since the RAVE based system provides outstanding flexibility and could be configured to provide system testing fuctions. The two RAVE boxes are linked via Ethernet over a pair of multi mode fibres using off the shelf network switches and media convertors. The Ethernet connection carries the audio signals using CobraNet and also system control signals using QSControl. The CobraNet and QSControl data could be split on to two separate networks, however as the system would not be used for more than two simultaneous audio channels a 'single wire' solution was perfectly acceptable. The system carries the following signals: .
The system provides three points of control. In normal usage the system is controlled by the enable keyswitch; the control room microphone and the simulator microphone. In addition the systems test fuctions may be activated from the front panels of either RAVE device. Full system status and control is also available by connection of a PC or networked PC's running QSCreator software to provide a bespoke graphical user interface shown below.
|
|||
|
Product Ranges & Services |
|
||
|
|
|
|
|
|
|
|
|
|
