|
In the course of the last few years, alarm systems have generally reached a substantial level of reliability. What is still a problem, however, is the generation of unwanted (false) alarms due to accidental causes, such as electromagnetic and electrical interference, windows accidentally left open or falling objects.
The unwanted (false) alarms, apart from causing anxiety and annoyance, make alarm systems less credible. It is estimated that more than 90 percent of alarm activations generated do not correspond to a crime related intrusion. As a consequence, the Police have refused to attend to audible warnings of alarm activations and, if the system is connected to a central monitoring station, the surveillance personnel have less faith in the alarm signals that they receive.
See how MSI has improved the situation by clicking on the RDV Logo to the left.
After years of research and tests, MSI has definitely solved the problems, thanks to the exclusive technology of Remote Digital Verification (RDV®), protected worldwide by patent, able to discern reliably in real time if an attempt at burglary is actually in progress inside the protected area.
The traditional analogue microwave detectors use the physical principle of the 'Doppler effect’' that is influenced by four factors: the size of the intruder, the distance from the detector, the speed of the movement, the angle of movement in relation to the detector. If the sum of these factors reaches a preset threshold, the detector sends out an impulse that makes the control panel activate the alarm. Thus, a falling cardboard box or a slamming window may be enough to activate the alarm.
In contrast, the RDV® system detector, generates a complex and continuous impulse that is directly proportionate to the movement detected. The control panel interprets the information, that reaches it in the shape of a square wave, and is able to discern, by means of sophisticated parameters of reference and anti-noise filters, with absolute certainty if there is human presence in the protected area at that moment. It is in fact possible to commit a theft in silence, staying in only one room and outside the framing of a CCTV camera, but it is impossible to do it without moving at all.
In addition, upon a now valid alarm activation, apart from the traditional alarm message transmitted via PSTN telephone line or GSM network to one or more subscribers (private individuals or central monitoring stations), it is possible to transmit a particular sound, a sort of continuous and modulated wail, that is the realtime acoustic representation of the movement detected. In the very improbable, but yet possible, case of a false alarm, you will hear a characteristic “bip-bip”, as a guarantee of the smooth functioning of the system.
In conclusion, the patented technology of remote digital verification (RDV®), is currently the only system permitting an authentic and efficient verification of alarm activations via telephone.
• No interpretation or assessment to carry out: only YES or NO
• No margin of uncertainty: if no movement is detected, there cannot be any attempt at burglary in progress
• Live, simultaneous verification of all the protected zones
• Respect of the customer’s privacy: the RDV detectors do not permit listening to what is said and to seeing what happens inside the protected area
• No particular equipment required: merely a standard PSTN or mobile telephone.
|
