Mining isolation type intrinsic safety LED driving power source

An LED drive and isolation technology, applied in the field of mine isolated intrinsically safe LED drive power supply, can solve the problems of increasing the volume and increasing the cost, and achieve the effect of improving reliability, improving response speed and good reliability.

Active Publication Date: 2013-12-04
SOUTHEAST UNIV
View PDF5 Cites 5 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, for mining intrinsically safe LED power supplies, most of them use low-power power supplies (≤10W). In order to achieve the required power level, a larger power supply module needs to be connected in parallel, which not only increases the size but also increases the cost.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Mining isolation type intrinsic safety LED driving power source
  • Mining isolation type intrinsic safety LED driving power source
  • Mining isolation type intrinsic safety LED driving power source

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0022] The technical solution of the invention will be described in detail below in conjunction with the accompanying drawings.

[0023] Such as figure 1 As shown, the isolated intrinsically safe LED drive power supply of the present invention includes an input rectification filter circuit 1, an isolation transformer 3, an output filter circuit 5, a feedback sampling and switch tube control circuit 6, a switch tube peak voltage suppression circuit 4; an input rectification filter circuit The output of 1 is connected to the isolation transformer 3, the output of the isolation transformer 3 is respectively connected to the output filter circuit 5 and the feedback sampling and switching tube control circuit 6, the output of the feedback sampling and switching tube control circuit 6 is connected to the switching tube peak voltage suppression circuit 4, and the switching tube peak voltage suppression The output of the circuit 4 is connected to the input of the isolation transformer...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

A mining isolated type intrinsic safety LED driving power source comprises an input rectification filter circuit, an isolation transformer, an output filter circuit, a feedback sampling and switch tube controlling circuit and a switch tube crest voltage suppression circuit. The output side of the input rectification filter circuit is connected with the isolation transformer, the output side of the isolation transformer is connected with the output filter circuit and the feedback sampling and switch tube controlling circuit respectively, the switch tube crest voltage suppression circuit is connected with the output side of the feedback sampling and switch tube controlling circuit, the output side of the switch tube crest voltage suppression circuit is connected to the input side of the isolation transformer, and the output side of the output filter circuit is connected with an LED load. The mining isolation type intrinsic safety LED driving power source is characterized in that a passive PFC circuit is additionally arranged between the input rectification filter circuit and the isolation transformer, and a dual-output overvoltage and overcurrent protection circuit is additionally arranged between the output filter circuit and the LED load.

Description

technical field [0001] The invention relates to a power supply system for mine safety lighting, in particular to a mine isolated intrinsically safe LED drive power supply. Background technique [0002] A good underground lighting and power supply system can provide a high-quality working environment for coal mines, and it also plays an important role in reducing underground accidents. Using traditional incandescent lamps as the main lighting in coal mines not only has low illumination, strong glare, and low efficiency, but also the circuit itself is unreliable. In recent years, with the rapid development of the LED industry, domestic industrial and mining enterprises have begun to combine the concept of LED lighting with the special lighting technology in coal mines, and implement mine green lighting, that is, intrinsically safe LED lighting systems. Intrinsically safe power supply (intrinsically safe power supply), that is, under normal operation and fault conditions, the ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
Patent Type & Authority Applications(China)
IPC IPC(8): H02M1/42H02M1/14H02H7/12H02M3/335H05B37/02
CPCY02B70/123H02M1/4266Y02B70/10
Inventor 钱钦松俞居正朱永生宋慧滨孙伟锋陆生礼时龙兴
Owner SOUTHEAST UNIV
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap