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Method and apparatus for providing a notification appliance with a light emitting diode

A technology of light emitting diodes, energy storage devices, applied in the field of effective and robust notification devices, which can solve the problems of inappropriate failure rate of flash tubes, affecting size, etc.

Active Publication Date: 2009-05-06
库珀惠洛克公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This requirement affects the size, assembly and cost associated with the use of flash tubes in strobe alarm units
Also, the failure rate of the flash tube may be unsuitable for some applications

Method used

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  • Method and apparatus for providing a notification appliance with a light emitting diode
  • Method and apparatus for providing a notification appliance with a light emitting diode
  • Method and apparatus for providing a notification appliance with a light emitting diode

Examples

Experimental program
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Embodiment Construction

[0018] figure 1 A block diagram of an LED strobe device 100 according to one embodiment of the present invention is shown. In this embodiment, the LED strobe device 100 includes: a voltage converter 110 , a control circuit 120 , an energy storage device 130 , a switch 140 and an LED 150 . Power to the LED strobe 100 is received through the voltage input 155 .

[0019] figure 1 Describe the basic circuit of the LED strobe device in one embodiment. In operation, the circuit employs a voltage converter 110 to step the input voltage, eg, from 16-45 VDC down to 10-12 VDC. In one embodiment, the voltage converter may employ an inrush current limiter to create an inrush current condition. Energy storage device 130 , such as one or more capacitors, is used to store charge pulsed through LED 150 .

[0020] In one embodiment, switch 140 is implemented using MOSFETs and control circuit 120 is implemented using a microcontroller. Unlike conventional flashtube-based alarm units, in w...

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PUM

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Abstract

A method and apparatus for providing a strobe alarm unit employing at least one light emitting diode.

Description

technical field [0002] The present invention relates to novel methods and apparatus for providing notification or warning means. Specifically, the present invention provides effective and robust notification devices, such as strobe alarm units with light emitting diodes (LEDs). Background technique [0003] Strobe lights are widely used in alarm systems, such as fire alarm systems, security systems, etc. In fact, the American Disability Act (ADA) and Underwriters Laboratories (UL) have established various government regulations and / or standards to determine various requirements, such as gating frequency and light output. [0004] An important requirement in a specific application is the light output of the strobe alarm unit. For example, UL has adopted a standard that requires a certain intensity of light output from a strobe alarm unit in a fire safety alarm system. Depending on the specific application and / or where the strobe alarm unit is installed, light output can ra...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G08B5/22G08B5/38
CPCG08B5/38
Inventor 约翰·W·柯伦肖恩·P·基尼
Owner 库珀惠洛克公司
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