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Constant-temperature constant-flow LED driving method and device

A LED driving and constant current technology, applied in the field of LED lighting, can solve the problems of LED damage, difficulty in grasping, cost waste, etc.

Active Publication Date: 2015-12-02
李文杰
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, since each application environment is different, how much current is appropriate to reduce is a variable that is difficult to grasp
Too much reduction will lead to low equipment utilization and waste of cost, too little reduction will lead to LED damage

Method used

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Embodiment Construction

[0037] The present invention will be described in detail below in conjunction with the accompanying drawings and specific implementation methods. The schematic implementation and description of the present invention are used to explain the present invention, but are not intended to limit the present invention.

[0038] Such as figure 1 As shown, the constant temperature and constant current LED driving device of the present invention includes a thermal module 100 , a single chip microcomputer control module 200 , a DCDC constant current driving module 300 , and a light emitting diode LED400 .

[0039] Wherein, the thermistor 100 includes a thermistor R5, the thermistor R5 is arranged on the radiator, the thermistor R5 changes its own resistance according to the temperature of the external environment, and then the thermistor 100 As the resistance value of the thermistor R5 changes, the voltage of the entire thermistor module 100 is changed. That is, the thermal module 100 cha...

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PUM

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Abstract

The invention discloses a constant-temperature constant-flow LED driving method and a device. The device comprises a single-chip computer control module, a temperature-sensitive module which is electrically connected to the single-chip computer control module, a DCDC constant-flow driving module which is electrically connected to the single-chip control module, and a light emitting diode LED which is electrically connected to the DCDC constant-flow driving module. The constant-temperature constant-flow LED driving method comprises steps of obtaining current temperature of a radiator through a thermistor on a thermosensitive module, calculating current control signals through a constant-temperature constant-flow LED driving method which is obtained through proportion integration differentiation by a single-chip microcomputer according to the current temperature, and controlling the magnitude of the current through the DCDC constant-flow driving module. The method and the device disclosed by the invention can automatically regulate the output current of the LED to the optimal along with the change of the current environment so as to enable the LED tow work in appropriate temperature.

Description

technical field [0001] The invention relates to the technical field of LED lighting, in particular to a constant-temperature and constant-current LED driving method and device that can automatically adjust the output current of the LED to the optimum as the ambient temperature changes. Background technique [0002] Light-Emitting Diode (LED for short) is a semiconductor electronic component that can convert electrical energy into light energy. Because of its energy saving, environmental protection, safety, long life, low power consumption, low heat, high brightness, waterproof, Shockproof, easy to adjust light, concentrated light beam, easy maintenance and other characteristics, it has been widely used in the field of lighting. [0003] However, if the ambient temperature is too high, LEDs will easily cause irreversible light decay and even damage at high temperatures. If it is ensured in a high temperature environment, the normal operation of the LED becomes a technical pr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H05B37/02
Inventor 李文杰
Owner 李文杰