CN106304462A - A kind of emergency lighting lamp fault protection circuit - Google Patents
A kind of emergency lighting lamp fault protection circuit Download PDFInfo
- Publication number
- CN106304462A CN106304462A CN201610590827.1A CN201610590827A CN106304462A CN 106304462 A CN106304462 A CN 106304462A CN 201610590827 A CN201610590827 A CN 201610590827A CN 106304462 A CN106304462 A CN 106304462A
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- Prior art keywords
- module
- chip
- emergency light
- emergency
- control chip
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B45/00—Circuit arrangements for operating light-emitting diodes [LED]
- H05B45/50—Circuit arrangements for operating light-emitting diodes [LED] responsive to malfunctions or undesirable behaviour of LEDs; responsive to LED life; Protective circuits
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- Circuit Arrangement For Electric Light Sources In General (AREA)
Abstract
The open a kind of emergency lighting lamp fault protection circuit of the present invention, including control chip, power detecting module, power module, alarm module, emergency light;Wherein said power detecting module is connected with described power module, emergency light, control chip respectively, and described control chip is connected with described alarm module;The information of described power detecting module transfer is processed by described control chip;The electric current formed in loop of described current detection module detection emergency light;Described power module provides the running voltage of 12V for power detecting module;Described alarm module carries out warning reminding to the information of emergency light, the present invention is by using current detection module, the current situation being able to detect that in emergency light, and in the I/O mouth connection LED of single-chip microcomputer, the quality of emergency light can be shown intuitively, there is simple in construction, efficiency height, the feature of low cost.
Description
Technical field
The present invention relates to light fixture testing circuit, specifically a kind of emergency lighting lamp fault protection circuit.
Background technology
Emergency light be widely used in public place and can not the place of intermittent illumination, emergence lighting lamp by light source,
Several parts compositions such as light source drive, commutator, inverter, set of cells, sign lamp shell.At ordinary times, civil power 220V is driven by light source
Dynamic device, drives light source normal illumination, by commutator, set of cells is carried out electric energy simultaneously and supplement, even if turning off illumination after work
In the case of, commutator is still operated in charged state, in order to make set of cells be in full combat readiness all the time.Tight when running into
Anxious situation, when civil power stops suddenly, inverter will start inverter circuit automatically, and the low-voltage electric energy of set of cells is converted to high-tension electricity
Can, drive light source to continue illumination, be that one can effectively illuminate and show fire escape, maybe can persistently illuminate and non-stop run
Light fixture.
In daily life, light fixture often breaks down, and user typically can not find that light fixture breaks down in time, causes
Maintenance not in time, have impact on the life of people, typically judges that light fixture the most normally works, it is generally required to artificial naked eyes go to identify,
Inefficiency, cost of labor is high.
Summary of the invention
A kind of emergency lighting lamp fault protection circuit that the present invention provides,
The purpose of the present invention can be achieved through the following technical solutions:
A kind of emergency lighting lamp fault protection circuit, including control chip, power detecting module, power module, warning mould
Block, emergency light;Wherein said power detecting module is connected with described power module, emergency light, control chip respectively,
Described control chip is connected with described alarm module;
The information of described power detecting module transfer is processed by described control chip;Described current detection module detects
The electric current formed in loop of emergency light;Described power module provides the running voltage of 12V for power detecting module;Described
Alarm module carries out warning reminding to the information of emergency light.
Further, described control chip uses STC89C52 single-chip microcomputer, and described current detection module uses MAX471 core
Sheet, described power module includes Switching Power Supply and XL4015 blood pressure lowering chip, and described alarm module uses LED.
Further, 220V alternating current Switching Power Supply in described power module is converted into 24V unidirectional current, and 24V is straight
Stream electricity is converted into 12V through XL4015 blood pressure lowering chip, provides the running voltage of 12V for MAX471 chip, and the running voltage of 12V is led to
RS+, RS-pin crossing MAX471 chip is connected with the drain electrode of metal-oxide-semiconductor, is that emergency light is powered by the source electrode of metal-oxide-semiconductor.
Further, the electric current that MAX471 chip detection arrives, export according to the ratio of 1A:500uA.
Further, by detecting the light on and off of LED, the quality of emergency light is reflected;When emergency light can
When normally working, the current information produced in MAX471 chip detection to loop, now the P2.3 mouth output high level of single-chip microcomputer,
LED is in the state of extinguishing;When emergency light is in fault, MAX471 chip is not detected by loop the electricity produced
Stream information, now the P2.3 mouth of single-chip microcomputer is low level, and LED is in bright state.
Beneficial effects of the present invention: the present invention is by using current detection module, it is possible to detect in emergency light
Current situation, and in the I/O mouth connection LED of single-chip microcomputer, it is possible to show the quality of emergency light intuitively, there is structure letter
Single, efficiency height, the feature of low cost.
Accompanying drawing explanation
In order to be illustrated more clearly that the technical scheme of the embodiment of the present invention, embodiment will be described required use below
Accompanying drawing is briefly described, it should be apparent that, the accompanying drawing in describing below is only some embodiments of the present invention, for ability
From the point of view of the those of ordinary skill of territory, on the premise of not paying creative work, it is also possible to obtain the attached of other according to these accompanying drawings
Figure.
Fig. 1 is the schematic diagram of the present invention a kind of emergency lighting lamp fault protection circuit.
Detailed description of the invention
A kind of emergency lighting lamp fault protection circuit, including control chip 1, power detecting module 2, power module 3, reports to the police
Module 4, emergency light 5;Wherein power detecting module 2 is connected with power module 3, emergency light 5, control chip 1 respectively,
Control chip 1 is connected with alarm module 4.
Control chip 1 uses STC89C52 single-chip microcomputer, the information that power detecting module 2 is transmitted is processed;Electric current is examined
Survey module 2 and use MAX471 chip, the operating current of detection emergency light;Power module 3 includes Switching Power Supply and XL4015
Blood pressure lowering chip, for providing running voltage for power detecting module 2;Alarm module 4 uses LED, the letter to emergency light
Breath carries out warning reminding.
220V alternating current becomes 24V unidirectional current through power module 3 breaker in middle Power convert, and 24V unidirectional current is through XL4015
Blood pressure lowering chip is converted into 12V, provides the running voltage of 12V for the MAX471 chip in current detection module 2, the work electricity of 12V
Pressure is connected with the drain electrode of metal-oxide-semiconductor by RS+, RS-pin of MAX471 chip, is that emergency light supplies by the source electrode of metal-oxide-semiconductor
Electricity, thus loop produces electric current;MAX471 chip detection, to the electric current produced, according to the ratio of 1A:500uA, is drawn by OUT
Foot spreads out of, then is converted into voltage by resistance;After control chip 1 detects the voltage of input, through processing, analyzing, pass through
LED is passed in P2.3 oral instructions, and LED is connected with power supply VCC by resistance, wherein, by the light on and off of LED, reflects emergent
The quality of illuminating lamp.
When emergency light can normally work, the current information produced in MAX471 chip detection to loop, passes through
OUT pin passes to STC89C52 single-chip microcomputer, by analysis, processes, now the P2.3 mouth output high level of single-chip microcomputer, due to
The voltage at LED two ends is all high voltage, and therefore LED is in the state of extinguishing.
When emergency light is in fault, MAX471 chip is not detected by loop the current information produced, now
The P2.3 mouth of single-chip microcomputer is low level, and LED is in bright state.
Above content is only the design example to the present invention and explanation, affiliated those skilled in the art
Described specific embodiment is made various amendment or supplements or use similar mode to substitute, without departing from invention
Design or surmount scope defined in the claims, protection scope of the present invention all should be belonged to.
Claims (5)
1. an emergency lighting lamp fault protection circuit, it is characterised in that: include control chip (1), power detecting module (2),
Power module (3), alarm module (4), emergency light (5);Wherein said power detecting module (2) respectively with described power supply mould
Block (3), emergency light (5), control chip (1) connect, and described control chip (1) is connected with described alarm module (4);
The information that described power detecting module (2) is transmitted by described control chip (1) processes;Described current detection module
(2) electric current formed in loop of detection emergency light;Described power module (3) is that power detecting module (2) provides 12V
Running voltage;Described alarm module (4) carries out warning reminding to the information of emergency light.
A kind of emergency lighting lamp fault protection circuit the most according to claim 1, it is characterised in that: described control chip
(1) using STC89C52 single-chip microcomputer, described current detection module (2) uses MAX471 chip, and described power module (3) includes out
Closing power supply and XL4015 blood pressure lowering chip, described alarm module (4) uses LED.
A kind of emergency lighting lamp fault protection circuit the most according to claim 1, it is characterised in that: 220V alternating current passes through
Switching Power Supply in described power module (3) is converted into 24V unidirectional current, and 24V unidirectional current is converted into through XL4015 blood pressure lowering chip
12V, provides the running voltage of 12V for MAX471 chip, the running voltage of 12V by RS+, RS-pin of MAX471 chip with
The drain electrode of metal-oxide-semiconductor connects, and is that emergency light is powered by the source electrode of metal-oxide-semiconductor.
A kind of emergency lighting lamp fault protection circuit the most according to claim 1, it is characterised in that: MAX471 chip detection
The electric current arrived, exports according to the ratio of 1A:500uA.
A kind of emergency lighting lamp fault protection circuit the most according to claim 1, it is characterised in that: by detection LED
Light on and off, reflect the quality of emergency light;When emergency light can normally work, MAX471 chip detection is to loop
The current information of middle generation, now the P2.3 mouth output high level of single-chip microcomputer, LED is in the state of extinguishing;Work as emergency lighting
When lamp is in fault, MAX471 chip is not detected by loop the current information produced, and now the P2.3 mouth of single-chip microcomputer is low
Level, LED is in bright state.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
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CN201610590827.1A CN106304462A (en) | 2016-07-26 | 2016-07-26 | A kind of emergency lighting lamp fault protection circuit |
Applications Claiming Priority (1)
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CN201610590827.1A CN106304462A (en) | 2016-07-26 | 2016-07-26 | A kind of emergency lighting lamp fault protection circuit |
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CN106304462A true CN106304462A (en) | 2017-01-04 |
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CN201610590827.1A Pending CN106304462A (en) | 2016-07-26 | 2016-07-26 | A kind of emergency lighting lamp fault protection circuit |
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Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN112040613A (en) * | 2020-09-03 | 2020-12-04 | 江西特瑞虹照明科技有限公司 | Control system of LED lamp |
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CN101896951A (en) * | 2007-12-03 | 2010-11-24 | 奥尔德里奇交通***私人有限公司 | An LED driver method for traffic lanterns |
CN201388315Y (en) * | 2008-04-01 | 2010-01-20 | 刘光宇 | Driver for LED street lamp |
KR100866346B1 (en) * | 2008-07-25 | 2008-10-31 | 유정구 | System for detecting error from led module |
CN101478853A (en) * | 2009-01-22 | 2009-07-08 | 江苏联宏自动化***工程有限公司 | On-line automatic detection method for high-voltage sodium vapor lamp failure and apparatus thereof |
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CN101600275A (en) * | 2009-07-27 | 2009-12-09 | 裘麒龙 | A kind of operating circuit of LED street lamp |
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CN202679712U (en) * | 2012-04-26 | 2013-01-16 | 广东凯乐斯光电科技有限公司 | LED lamp real-time power acquisition and control system |
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Application publication date: 20170104 |