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PASS: Professional Audience Safety System |
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The most beautiful and unique laser show effect is audience scanning. To be inside the light, to have colors and shapes wash over you in time to music - there is no other experience like it. Audience scanning made
safer
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How to ensure audience safetyPASS continually monitors the laser power, scanner signals, and other projector-related parameters. If everything is working safely and correctly, then PASS will never need to interrupt the light output from the projector. However, if there is a minor problem with the show programming such that the beam is traveling too slow, or stops scanning altogether, PASS will momentarily interrupt the light coming from the projector, by manipulating the color and blanking signals. Once the show resumes safe operation with the laser beam moving sufficiently fast so as to not present a hazard, PASS will allow the light to resume coming out of the projector. The PASS hardware and software does this in a very intelligent way so as to not destroy the intended visual effect. It is only in the event of a major problem detected within the projector (or within PASS itself) that PASS will take drastic action. PASS aggressively and vigorously protects the audience from system failures.
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Goes beyond scan-fail circuitsPASS is significantly more advanced than any previous "scan-fail" or "laser show safety" products. It went trough ten years of R&D, and two years of U.S. government scrutiny to determine that it provides true safety. PASS was also reviewed by ILDA judges in 2007 and received the first place Fenning Award for Technical Achievement. All of the systems within PASS were designed such that there is redundancy. That is, there are always at least two circuits observing any condition (power supply, light output, scanner dynamics, and system logic). For maximum reliability, each of these at least two circuits are implemented in different ways, thus, making it extraordinarily unlikely that both circuits would fail in exactly the same way at exactly the same time. And the output of these circuits are polled, such that all circuits must agree that there is a safe condition, in order for PASS to allow light to emanate from the projector. Due to its redundant approach, there is no single point of failure that permits hazardous light levels to reach an audience. If any parameter is unsafe, or if a monitoring circuit within PASS fails, it will go into a safe mode where laser light ceases. In fact, PASS will maintain safety even in the face of five simultaneous system failures!
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Not just for U.S. showsPASS is not just for the U.S. It is for anyone who needs to prove to a client, an insurance company, or a government inspector that an audience scanning show will not exceed user-set safety limits under any condition. For example, some clients have concerns about liability in case there is a claimed injury. With PASS, you can perform shows that were never before possible. If there is any claim of injury, you'll be able to prove that laser power in the audience was continuously controlled. Having undergone intense scrutiny by the laser safety community, and being the safety system within the first projector to receive a CDRH Variance for European-style Audience Scanning, thus allowing Audience Scanning laser shows to be performed in the United States, PASS is currently the only credible solution to ensure the continued success of the laser entertainment industry.
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Easy to install in any projectorPASS consists of two components inside your projector: a credit-card-size circuit board which inserts into the ILDA signal path, and a light sensor just before the scanners. A few additional connections are then made to the scanner position signals and the system power supply. PASS provides five trimpot adjustments to customize its response:
During setup at the show location, simply adjust the horizon and beam power parameters. That's it! PASS works automatically to protect the audience.
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The only guaranteed audience safety systemIncreasingly, clients and regulators are wanting reassurance that the audience scanning levels are known and safe. Pangolin guarantees that PASS will keep the beam power in the audience at or below your preset level, even under system failure conditions. PASS is a complete system that monitors laser system health, to ensure audience safety.
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How to get PASSFor use within the United States, LSDI sells a series of laser projectors that already include PASS and for which a CDRH variance has already been approved. Contact LSDI for more information about their CONEX laser projectors. For use outside the United States, contact Pangolin for more information. |
This page last updated: Wednesday, September 03, 2008 07:59 AM
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