มีเอกสารการจดสิทธิบัตร เครื่องกำเนิดไฟฟ้าสำรอง UPQ (UPS) ที่เหมาะกับ CTX 9000
เครื่อง CTX 9000 ต้องการไฟฟ้าที่มีแรงดันนิ่ง และปราศจากคลื่นอื่นๆแปลกปลอม
รายละเอียดของเอกสารสิทธิบัตร ปี 2004 ตามลิ้งค์ข้างล่าง
http://www.freepatentsonline.com/20040150371.html_____________________________________________________
Power conditioner and backup for security scanning equipment United States Patent 20040150371
Kind Code: A1
Link to this page:
http://www.freepatentsonline.com/20040150371.htmlAbstract:Disclosed herein are power conditioning systems for providing filtered, clean and reliable power to sensitive electrical or electronic loads and further to provide battery backed power to those loads. Further dislcosed herein are such power conditioning systems for supplying clean power to security scanning equipment and to infant life support devices. Detailed information on various example embodiments of the inventions are provided in the Detailed Description below, and the inventions are defined by the appended claims.
DETAILED DESCRIPTION
[0056] The public need for reliable security equipment has increased after the terrorist attacks in the United States of Sep. 11, 2001. Prior to that time, it was considered acceptable to continue using aging security equipment, such as common x-ray equipment utilizing human pattern recognition. With the recent priorities on increased security, it has become highly desirable to increase the amount of scanning of passenger luggage, detecting for example weapons or explosives, without burdening the public with excessive travel delays. As part of heightened airport security, bag scanning for all bags became law for all airports in the United States in January of 2003. New equipment was therefore sought for, not only in the United States but also for many airports and other terminals around the globe, with the capability of scanning much higher volumes of luggage.
One manufacturer of such scanners is InVision Technologies Inc. of Newark, Calif., in the United States.
[0057] These new security devices are expensive capital equipment items. There is therefore a desire on the part of administrators to purchase as little equipment as possible to meet security needs under average conditions. It is therefore desirable to operate that equipment near capacity, and not purchase redundant systems. Under those conditions, it becomes critical to keep that equipment in operation, as a failure may lead to additional passenger delays or gaps in important security survellance.
[0058] The most modern of security equipment includes computer equipment and other components that require a boot or "warm-up" period on start up, which may require a period of several to many minutes during which the equipment is not operational. Thus power interruptions may cause delays in the handling of passengers and luggage, which may be unacceptably long.
Modern scanning equipment is also very sensitive, and power quality problems can lead to malfunctions and damage leading to costly downtime and delays. Auxilliary generators have not adequately solved these problems because (1) a generator cannot immediately supply power due to a start-up time, which causes a power interruption during that period and (2) auxilliary generators often produce poor-quality power.
[0059]
As mentioned above, UPS systems have been available which can mitigate power losses for short periods. UPS systems, however, may be unsuitable for use with security equipment for a number of reasons. First, a common UPS system may not filter the incoming power to remove spikes, dips and noise. Second, many common UPS devices generate a low-frequency modulated modified sine wave, which introduces some high frequency noise on the supplied power. Additionally, many UPS devices will tolerate large variations in voltage and frequency of incoming power, passing poor quality power to loads, as these devices are designed as backup devices to be brought in use only on complete power failure.[0069]
A first exemplary Uninterruptible Power Quality (UPQ) unit will now be described having a 30 kVA capacity and being suitable for supplying continuous power to a CTX 9000 DSi.TM. explosive detection system available from InVision Technologies Inc. of Newark, Calif., United States. The CTX 9000 Dsi.TM. requires high quality power, not generally suppliable from an auxilliary generator. That UPQ unit includes power electronics in batteries in a very compact and self-contained package.
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