CN104411077B - LED dodges protection module - Google Patents
LED dodges protection module Download PDFInfo
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- CN104411077B CN104411077B CN201410816213.1A CN201410816213A CN104411077B CN 104411077 B CN104411077 B CN 104411077B CN 201410816213 A CN201410816213 A CN 201410816213A CN 104411077 B CN104411077 B CN 104411077B
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- current source
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Abstract
LED dodges protection module; mainly dodged protection module by lamp and power supply support module forms; lamp dodges protection module and includes LED constant current source voltage x current Acquisition Circuit, single-chip computer control system and digital output modul circuit; LED constant current source voltage x current Acquisition Circuit is made up of the pressure filter circuit gathering analogue signal some resistance and electric capacity; digital output modul circuit is two control circuits, cuts off circuit including the outputting cutting deenergizing being made up of some resistance, transistor and switch and the input being made up of some resistance, transistor and switch.The present invention arranges lamp between the constant-current source and LED lamp panel of LED lamp holder and dodges protection module; the input voltage of lamp directly connects on that module; input voltage is provided to constant-current source by module; the also AM access module of the output voltage of constant-current source; after being detected by module, output voltage electric current is received in LED lamp panel, by detecting the voltage of lamp string, on the premise of constant-current source meets requirement; turn off the constant-current source of lamp bead in advance, and then do not allow lamp bead flash.
Description
Technical field
The present invention relates to LED illumination and control technical field, be specifically related to a kind of LED and dodge protection module.
Background technology
In today that economy develops rapidly, the frequent natural disaster caused due to the exploitation of disposable energy excess is to people
Beaten the alarm bell of environmental protection, the energy-conserving and environment-protective consciousness of people starts constantly to strengthen, and energy-conservation, low-carbon (LC), environmental protection concept have become as
The main trend of Present S & T Development.Illumination is that we produce and live one of requisite energy resource consumption, and today, the whole world was huge
Big illumination power consumption and the luminaire of low conversion efficiency have made the waste of the energy increasingly sharpen.LED is with its volume
Little, low power consuming, life-span length, high brightness, environmental protection, sturdy and durable, the advantageous characteristic such as response time is short have attracted global eyeball,
So LED green light source replaces conventional illumination sources, becoming optimal emerging energy-conserving light source has been trend of the times.But, at present
LED outdoor road lamp cap, will increase along with the prolongation of the time lighted, internal resistance when LED lamp bead, be applied to the electricity on lamp bead string
Pressure will increase, and now the output voltage of constant-current source may not meet the requirement of lamp string and causes stroboscopic, the flickering pole of road
The big safety that have impact on road, brings certain discomfort to pedestrian, motor vehicles.
Summary of the invention
The invention provides a kind of LED and dodge protection module, to solve the lamp bead flicker effects illumination that prior art exists
The problem of effect.
The technical solution adopted for the present invention to solve the technical problems is:
A kind of LED dodges protection module, and this module is connected between LED lamp holder constant-current source and LED lamp panel, is mainly dodged by lamp
Protection module and power supply support module composition, lamp dodges protection module and includes LED constant current source voltage x current Acquisition Circuit, single-chip microcomputer control
System processed and digital output modul circuit, LED constant current source voltage x current Acquisition Circuit and digital output modul circuit respectively with single-chip microcomputer
Control system be connected, the input and output terminal of LED lamp holder constant-current source respectively with power supply support module and single-chip computer control system phase
Even, LED constant current source voltage x current Acquisition Circuit is made up of the pressure filter circuit gathering analogue signal some resistance and electric capacity,
Digital output modul circuit is two control circuits, including the outputting cutting deenergizing being made up of some resistance, transistor and switch and by
Circuit is cut off in the input of some resistance, transistor and switch composition.
The operation principle of the present invention: the input terminal of LED lamp holder constant-current source by power supply support module obtain 5VDC,
12VDC voltage, the output voltage of constant-current source, electric current are input to lamp and dodge in protection module by the input terminal of LED lamp holder constant-current source
Portion, the input terminal of LED lamp holder constant-current source connects lamp bead both positive and negative polarity in LED lamp holder, and during LED lamp holder is lighted, lamp dodges protection
Signal is transported to the single-chip microcomputer of single-chip computer control system by module by LED constant current source voltage x current Acquisition Circuit, by gather
Information of voltage is stored in the EEROM of single-chip microcomputer, when the constant-current source output voltage of LED lamp holder (can be according to reality higher than setting voltage
Border it needs to be determined that) time, single-chip microcomputer is by the outputting cutting deenergizing of digital output modul circuit, and then is turned off by lamp, single after time delay 3 seconds
Sheet machine cuts off this lamp of circuitry cuts by the input of digital output modul circuit and dodges the input power of protection module, plays well guarantor
Protect the effect of lamp bead.
The present invention arranges lamp between the constant-current source and LED lamp panel of LED lamp holder and dodges protection module, and the input voltage of lamp is direct
Connect on that module, provide input voltage by module to constant-current source, the also AM access module of the output voltage of constant-current source, pass through module
After detection, output voltage electric current is received in LED lamp panel, by detecting the voltage of lamp string, on the premise of constant-current source meets requirement,
Turn off the constant-current source of lamp bead in advance, and then do not allow lamp bead flash.
Accompanying drawing explanation
The present invention is further described with embodiment below in conjunction with the accompanying drawings.
Fig. 1 is the structural representation of the present invention；
Fig. 2 is the circuit diagram that lamp of the present invention dodges protection module.
1 input and output terminal, 2 LED constant current source voltage x current Acquisition Circuit, 3 single-chip computer control systems, 4 switching values in figure
Control circuit, 5 power supply support modules.
Detailed description of the invention
As depicted in figs. 1 and 2, a kind of LED dodges protection module, and this module is connected to LED lamp holder constant-current source and LED lamp panel
Between, mainly being dodged protection module by lamp and power supply support module 5 forms, lamp dodges protection module and includes LED constant current source voltage x current
Acquisition Circuit 2, single-chip computer control system 3 and digital output modul circuit 4, LED constant current source voltage x current Acquisition Circuit 2 and switching value
Control circuit 4 is connected with single-chip computer control system 3 respectively, the input and output terminal 1 of LED lamp holder constant-current source respectively with power supply support
Module 5 is connected with single-chip computer control system 3, LED constant current source voltage x current Acquisition Circuit 2 be by RA1, RA2, RA3, CA2 and
CA3 composition gather analogue signal pressure filter circuit, digital output modul circuit is two control circuits, including by RA4, RA6,
RA7, RA10, R6, Q1, Q2 and K1 composition outputting cutting deenergizing and by RA5, RA8, RA9, RA11, Q3, Q4 and K2 form defeated
Enter to cut off circuit.
The operation principle of the present invention: the input terminal of LED lamp holder constant-current source by power supply support module obtain 5VDC,
12VDC voltage, the output voltage of constant-current source, electric current are input to lamp and dodge in protection module by the input terminal of LED lamp holder constant-current source
Portion, the input terminal of LED lamp holder constant-current source connects lamp bead both positive and negative polarity in LED lamp holder, and during LED lamp holder is lighted, lamp dodges protection
Signal is transported to list by the LED constant current source voltage x current Acquisition Circuit being made up of RA1, RA2, RA3, CA2 and CA3 by module
The single-chip microcomputer of sheet machine control system, is stored in the information of voltage of collection in the EEROM of single-chip microcomputer, when the constant-current source of LED lamp holder
When output voltage is higher than setting voltage (can determine according to actual needs), single-chip microcomputer is cut off by the output of digital output modul circuit
Circuit (is made up of RA4, RA6, RA7, RA10, R6, Q1, Q2 and K1), and then is turned off by lamp, and after time delay 3 seconds, single-chip microcomputer is by leaving
This lamp sudden strain of a muscle protection mould is cut off in input cut-out circuit (being made up of RA5, RA8, RA9, RA11, Q3, Q4 and K2) closing amount control circuit
The input power of block, plays the effect well protecting lamp bead.
Claims (1)
1. LED dodges a protection module, it is characterized in that this module is connected between LED lamp holder constant-current source and LED lamp panel, mainly
Being dodged protection module by lamp and power supply support module forms, lamp dodges protection module and includes LED constant current source voltage x current Acquisition Circuit, list
Sheet machine control system and digital output modul circuit, LED constant current source voltage x current Acquisition Circuit and digital output modul circuit respectively with
Single-chip computer control system be connected, the input and output terminal of LED lamp holder constant-current source respectively with power supply support module and Single-chip Controlling
System is connected, and LED constant current source voltage x current Acquisition Circuit is made up of the dividing potential drop filter gathering analogue signal some resistance and electric capacity
Wave circuit, digital output modul circuit is two control circuits, including the outputting cutting power-off being made up of some resistance, transistor and switch
Circuit is cut off in road and the input being made up of some resistance, transistor and switch, and lamp dodges protection module by LED constant current source voltage electricity
Signal is transported to the single-chip microcomputer of single-chip computer control system by stream Acquisition Circuit, and the information of voltage of collection is stored in single-chip microcomputer
In EEROM, when the constant-current source output voltage of LED lamp holder is higher than setting voltage, single-chip microcomputer is defeated by digital output modul circuit
Go out and cut off circuit, and then lamp is turned off, after time delay 3 seconds single-chip microcomputer cut off circuitry cuts by the input of digital output modul circuit should
Lamp dodges the input power of protection module.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410816213.1A CN104411077B (en) | 2014-12-25 | 2014-12-25 | LED dodges protection module |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410816213.1A CN104411077B (en) | 2014-12-25 | 2014-12-25 | LED dodges protection module |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104411077A CN104411077A (en) | 2015-03-11 |
| CN104411077B true CN104411077B (en) | 2016-11-30 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410816213.1A Expired - Fee Related CN104411077B (en) | 2014-12-25 | 2014-12-25 | LED dodges protection module |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201947509U (en) * | 2011-01-19 | 2011-08-24 | 彭孟展 | LED (light emitting diode) lamp power supply of multiplexed output |
| CN102711310A (en) * | 2011-03-28 | 2012-10-03 | 海洋王照明科技股份有限公司 | Light-emitting diode (LED) drive circuit and lamp |
| WO2014180057A1 (en) * | 2013-05-08 | 2014-11-13 | 深圳市华星光电技术有限公司 | Led backlight drive circuit, backlight module, and liquid crystal display apparatus |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN204291513U (en) * | 2014-12-25 | 2015-04-22 | 山东亿昌照明科技有限公司 | LED dodges protection module |
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2014
- 2014-12-25 CN CN201410816213.1A patent/CN104411077B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201947509U (en) * | 2011-01-19 | 2011-08-24 | 彭孟展 | LED (light emitting diode) lamp power supply of multiplexed output |
| CN102711310A (en) * | 2011-03-28 | 2012-10-03 | 海洋王照明科技股份有限公司 | Light-emitting diode (LED) drive circuit and lamp |
| WO2014180057A1 (en) * | 2013-05-08 | 2014-11-13 | 深圳市华星光电技术有限公司 | Led backlight drive circuit, backlight module, and liquid crystal display apparatus |
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| Publication number | Publication date |
|---|---|
| CN104411077A (en) | 2015-03-11 |
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Granted publication date: 20161130 Termination date: 20211225 |
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| CF01 | Termination of patent right due to non-payment of annual fee |