CN106304462A

CN106304462A - A kind of emergency lighting lamp fault protection circuit

Info

Publication number: CN106304462A
Application number: CN201610590827.1A
Authority: CN
Inventors: 李多山; 谷瑞
Original assignee: Hefei Lianxin Power Supply Co Ltd
Current assignee: Hefei Lianxin Power Supply Co Ltd
Priority date: 2016-07-26
Filing date: 2016-07-26
Publication date: 2017-01-04

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

A kind of emergency lighting lamp fault protection circuit

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

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.