CN208509335U - A kind of LED light perseverance brightness controlling device - Google Patents

Abstract

The utility model provides a kind of LED light perseverance brightness controlling device, comprising: controller, constant-current driven chip, Voltage stabilizing module and LED light；The input terminal of Voltage stabilizing module is electrically connected with external power supply, the output end of Voltage stabilizing module is electrically connected with the power end of controller, the output end of controller is electrically connected with the control terminal of constant-current driven chip, the input terminal of controller is electrically connected with the output end of constant-current driven chip, the input terminal of controller receives the electric current of constant-current driven chip output end output, and the control terminal of constant-current driven chip is output control signals to by the output end of controller；The output end of constant-current driven chip is also electrically connected with the anode of LED light；Constant-current driven chip adjusts the electric current that duty ratio changes output, and LED light is made to be in permanent luminance state.The utility model controls the electric current of constant-current driven chip output by controller, and realization makes LED light be in permanent luminance state, improves the lighting quality for making LED light, and improve the service life of LED light, economize on resources.

Description

A kind of LED light perseverance brightness controlling device

Technical field

The utility model relates to illuminating device technical fields, and in particular to a kind of LED light perseverance brightness controlling device.

Background technique

With the development of LED technology, LED light has gradually replaced traditional halogen lamp, incandescent lamp, fluorescent lamp and other illuminations Lamps and lanterns.Raising of the existing LED light with operating temperature and the extension using the time will lead to light decay enhancing and the hair of LED light Light ability decline, the comfortableness and security for causing LED light to illuminate can gradually reduce, and influence the lighting quality of LED light.

As the lasting enhancing of LED light light decay will cause the lasting reduction of LED light brightness, when the light decay of LED light reaches When 30%, the service life of LED light will expire, and existing LED light lacks the service life and expires active warning design, can only be thick by human eye Slightly judgement or passive detection discovery, there are security risks.

Utility model content

For the defects in the prior art, the utility model provides a kind of LED light perseverance brightness controlling device, realizes to LED The control of lamp brightness improves the lighting quality of LED light.

To achieve the above object, the utility model the following technical schemes are provided:

The utility model provides a kind of LED light perseverance brightness controlling device, comprising: controller, constant-current driven chip, pressure stabilizing Module and LED light；

The input terminal of the Voltage stabilizing module is electrically connected with external power supply, the output end of the Voltage stabilizing module and the controller Power end electrical connection, the voltage of external power supply is converted to first voltage and provides institute for the controller by the Voltage stabilizing module State first voltage；

The output end of the controller is electrically connected with the control terminal of the constant-current driven chip, the input terminal of the controller It is electrically connected with the output end of the constant-current driven chip, the input terminal of the controller receives the constant-current driven chip output end The electric current of output, and output control signals to by the output end of controller the control terminal of constant-current driven chip；

The output end of the constant-current driven chip is also electrically connected with the anode of the LED light；The constant-current driven chip connects After receiving the control signal, the duty ratio for adjusting the constant-current driven chip changes the constant-current driven chip output end output Electric current makes the LED light be in permanent luminance state.

Further, further includes: wireless communication module；

The data input pin of the wireless communication module is electrically connected with the data terminal of the controller；

When the received electric current of controller is greater than predetermined current, the controller passes through data terminal to the wireless communication Module sends alarm signal, after the wireless communication module receives the alarm signal, sends warning message to exterior terminal.

Further, the predetermined current are as follows: the rated current of LED light under nominal power.

Further, the controller are as follows: MKE02Z32VLC4；The constant-current driven chip are as follows: MAX16820；

Wherein, capacitor C1 is equipped between upper 3rd pin of controller MKE02Z32VLC4 and the 6th pin, first voltage is passed through Resistance R8 is electrically connected with the anode of diode D8, and diode D8 is electrically connected with upper 8th pin of controller MKE02Z32VLC4；

Upper 1st pin of constant-current driven chip MAX1682 is electrically connected with external power supply, and the 4th pin is electrically connected with ground terminal, the Capacitor C2 is equipped between 1 pin and the 4th pin, the 1st pin is electrically connected with one end of inductance L, the other end and transistor of inductance L The drain of Q is electrically connected, and the drain of transistor Q is electrically connected with the anode of diode D1, the cathode of diode D1 and the anode of LED light Electrical connection, the source electrode of transistor Q are electrically connected with the cathode of LED light, and the source electrode of transistor Q is electrically connected with one end of resistance R7, electricity The other end of resistance R7 is electrically connected with upper 2nd pin of constant-current driven chip MAX1682, and resistance R6 is in parallel with resistance R7；Constant current driving Upper 3rd pin of chip MAX1682 is electrically connected with upper 11st pin of controller MKE02Z32VLC4；Resistance R1, resistance R2, resistance R3 It connects with resistance R4, the anode of LED light is electrically connected with the other end of resistance R1, and the other end of resistance R4 is electrically connected with ground terminal, Diode D2 is in parallel with resistance R4 and the positive of diode D2 is electrically connected with ground terminal；The cathode and controller of diode D2 The upper 19th pin electrical connection of MKE02Z32VLC4.

Further, the Voltage stabilizing module includes: three terminal regulator and voltage stabilizing chip；

The input terminal of the three terminal regulator is electrically connected with external power supply, external power supply is converted to second voltage, and lead to Cross the input terminal that second voltage is sent to the voltage stabilizing chip by output end；

Received second voltage is converted to first voltage by the voltage stabilizing chip.

Further, the three terminal regulator is LM7805, and the voltage stabilizing chip is SGM2019；

Wherein, the second voltage is positive 5V, and the first voltage is positive 3.3V.

As shown from the above technical solution, a kind of LED light perseverance brightness controlling device described in the utility model, passes through controller The electric current of constant-current driven chip output is controlled, realization makes LED light be in permanent luminance state, the lighting quality for making LED light is improved, and It in the service life for improving LED light, economizes on resources.

Detailed description of the invention

In order to illustrate the embodiment of the utility model or the technical proposal in the existing technology more clearly, below will be to embodiment Or attached drawing needed to be used in the description of the prior art is briefly described, it should be apparent that, the accompanying drawings in the following description is this Some embodiments of utility model, for those of ordinary skill in the art, without creative efforts, also Other drawings may be obtained according to these drawings without any creative labor.

Fig. 1 is a kind of structural schematic diagram of LED light perseverance brightness controlling device provided by the embodiment of the utility model；

Fig. 2 is LED environment temperature-operating voltage change curve in the utility model embodiment；

Fig. 3 is the opposite light decay performance diagram of LED environment temperature-in the utility model embodiment；

Fig. 4 is the circuit structure of controller in a kind of LED light perseverance brightness controlling device provided by the embodiment of the utility model Figure；

Fig. 5 is the electricity of constant-current driven chip in a kind of LED light perseverance brightness controlling device provided by the embodiment of the utility model Line structure figure；

Fig. 6 is the circuit of three terminal regulator in a kind of LED light perseverance brightness controlling device provided by the embodiment of the utility model Structure chart；

Fig. 7 is the circuit knot of voltage stabilizing chip in a kind of LED light perseverance brightness controlling device provided by the embodiment of the utility model Composition.

Specific embodiment

It is practical new below in conjunction with this to keep the objectives, technical solutions, and advantages of the embodiments of the present invention clearer Attached drawing in type embodiment, the technical solutions in the embodiments of the present invention are clearly and completely described, it is clear that is retouched The embodiment stated is the utility model a part of the embodiment, instead of all the embodiments.Based on the implementation in the utility model Example, every other embodiment obtained by those of ordinary skill in the art without making creative efforts belong to The range of the utility model protection.

The utility model embodiment provides a kind of LED light perseverance brightness controlling device and specifically includes referring to Fig. 1: controller 1, constant-current driven chip 3, Voltage stabilizing module 2 and LED light 4；

The input terminal of Voltage stabilizing module 2 is electrically connected with external power supply, the output end of Voltage stabilizing module 2 and the power end of controller 1 The voltage of external power supply is converted to first voltage and provides first voltage for controller 1 by electrical connection, Voltage stabilizing module 2；

The output end of controller 1 is electrically connected with the control terminal of constant-current driven chip 3, and the input terminal of controller 1 and constant current are driven The output end electrical connection of dynamic chip 3, the input terminal of controller 1 receives the electric current of 3 output end of constant-current driven chip output, and passes through The output end of controller 1 outputs control signals to the control terminal of constant-current driven chip 3；

The output end of constant-current driven chip 3 is also electrically connected with the anode of LED light 4；Constant-current driven chip 3 receives control signal Afterwards, the duty ratio for adjusting constant-current driven chip 3 changes the electric current of 3 output end of constant-current driven chip output, and LED light 4 is made to be in perseverance Luminance state.

In application, when the light decay of LED light is more than 30%, the theoretical service life of LED light expires LED light, at this time if increased The power of LED light can guarantee that LED light total brightness is constant, and LED light residual life can be obtained by effective use.Therefore this reality The electric current that example controls constant-current driven chip output by controller is applied, the realtime power of LED light is improved, it is ensured that LED light is in perseverance Luminance state.

- Fig. 3 referring to fig. 2, the input terminal of controller receive the electric current of constant-current driven chip output end output, and will be received Electric current is converted to voltage, according to Fig.2: LED environment temperature-operating voltage change curve, controller can determine LED The current environment temperature of lamp, according to Fig.3: LED environment temperature-can determine with respect to light decay characteristic curve, controller Increment of the product of the current light decay of LED light, current light decay and initial light modulation ratio as duty ratio, constant-current driven chip The raising of duty ratio, then the electric current of constant-current driven chip output increases, it is ensured that LED light is in permanent luminance state, and realization passes through control Constant-current driven chip processed improves LED light operating power to reach permanent brightness control purpose.

Wherein, the initial light modulation ratio of constant-current driven chip is 60% duty ratio.

In the specific implementation, the rated current of LED light under nominal power is determined.Default electricity is set by the rated current Stream, which is the maximum operating currenbt of constant-current driven chip setting, when the duty ratio of constant-current driven chip reaches 100% When, i.e. the electric current of constant-current driven chip output reaches predetermined current, determines that LED light reaches light decay lifetime limitation, in the controller Setting opens LED light moment every time and provides fast blink twice and expire active warning as the service life.

Further, controller are as follows: MKE02Z32VLC4；Constant-current driven chip are as follows: MAX16820；Controller and constant current are driven Circuit connecting relation between dynamic chip is as follows:

Referring to fig. 4, capacitor C1 is equipped between upper 3rd pin of controller MKE02Z32VLC4 and the 6th pin, capacitor C1 can The interference between power supply and ground connection is filtered out, the stability of power supply power supply is improved；First voltage is by resistance R8's and diode D8 Anode electrical connection, resistance R8 are divider resistance, reduce the voltage on diode D8, are in diode D8 under rated condition；Two Pole pipe D8 is electrically connected with upper 8th pin of controller MKE02Z32VLC4；

Referring to Fig. 5, upper 1st pin of constant-current driven chip MAX1682 is electrically connected with external power supply, the 4th pin and ground terminal Electrical connection, is equipped with capacitor C2 between the 1st pin and the 4th pin, capacitor C2 can filter out AC signal between power supply and ground connection Interference, improves the stability of power supply power supply；1st pin is electrically connected with one end of inductance L, and the other end of inductance L is with transistor Q's Drain electrical connection, the drain of transistor Q are electrically connected with the anode of diode D1, the cathode of diode D1 and the anode electricity of LED light Connection, the source electrode of transistor Q are electrically connected with the cathode of LED light, and the source electrode of transistor Q is electrically connected with one end of resistance R7, resistance The other end of R7 is electrically connected with upper 2nd pin of constant-current driven chip MAX1682, and resistance R6 is in parallel with resistance R7；Constant current drives core Upper 3rd pin of piece MAX1682 is electrically connected with upper 11st pin of controller MKE02Z32VLC4；Controller passes through constant-current driven chip The duty ratio of the upper 3rd pin regulation constant-current driven chip MAX1682 of MAX1682, realizes and adjusts constant-current driven chip MAX1682's Export electric current；Resistance R1, resistance R2, resistance R3 and resistance R4 series connection, the anode of LED light are electrically connected with the other end of resistance R1, The other end of resistance R4 is electrically connected with ground terminal, and diode D2 is in parallel with resistance R4 and the positive of diode D2 is electrically connected with ground terminal It connects；The cathode of diode D2 is electrically connected with upper 19th pin of controller MKE02Z32VLC4, i.e. one end of resistance R4 and controller The upper 19th pin electrical connection of MKE02Z32VLC4, the output electric current of constant-current driven chip MAX1682 pass through concatenated resistance R1, electricity R2, resistance R3 and resistance R4 are hindered, that is, turns output electric current being changed to output voltage, the voltage value of output is multiplying for current value and resistance Product, and after the partial pressure of concatenated resistance R1, resistance R2, resistance R3 and resistance R4, controller MKE02Z32VLC4 the upper 19th Pin acquires the voltage between resistance R3 and resistance R4 with ground terminal, and the curve in-Fig. 3 realizes acquisition LED light according to fig. 2 Light decay.

Voltage stabilizing module includes: three terminal regulator and voltage stabilizing chip；The input terminal of three terminal regulator is electrically connected with external power supply, External power supply is converted into second voltage, and second voltage is sent to the input terminal of voltage stabilizing chip by output end；Pressure stabilizing core Received second voltage is converted to first voltage by piece.

Referring to Fig. 6, three terminal regulator LM7805, the external power supply of 12V-36V is converted into second voltage, i.e.+5V's Power supply.

Fig. 7, voltage stabilizing chip SGM2019 are participated in, the three terminal regulator LM7805 second voltage exported is converted to first Voltage, first voltage are the power supply of+3.3V.

It is setting capacitor C3, capacitor C4 and capacitor C5 on the power end and ground terminal on SGM2019 in voltage stabilizing chip, realizes It is filtered between power supply and ground terminal, eliminates interference.

On the basis of the above embodiments, LED light perseverance brightness controlling device further include: wireless communication module；

The data input pin of wireless communication module is electrically connected with the data terminal of controller；

When the received electric current of controller is greater than predetermined current, controller is sent to wireless communication module by data terminal and is alarmed Signal after wireless communication module receives alarm signal, sends warning message to exterior terminal.

Wherein, the reset terminal on wireless communication module is electrically connected with upper 25th pin of controller MKE02Z32VLC4, if It sets parameter end to be electrically connected with upper 26th pin of controller MKE02Z32VLC4, on data sending terminal and controller MKE02Z32VLC4 The electrical connection of 27th pin, data receiver are electrically connected with upper 28th pin of controller MKE02Z32VLC4.

When the duty ratio of constant-current driven chip reaches 100%, i.e. the electric current of constant-current driven chip output is met or exceeded Predetermined current, controller send alarm signal to wireless communication module by data terminal, and wireless communication module receives alarm signal Afterwards, warning message is sent to exterior terminal.

As can be seen from the above description, a kind of LED light perseverance brightness controlling device provided in this embodiment, is controlled permanent by controller The electric current of driving chip output is flowed, realization makes LED light be in permanent luminance state, improves the lighting quality for making LED light, and improve It in the service life of LED light, economizes on resources；Module carries out sending initiative alarming information to outside by wireless communication, to the service life The LED light of phase carries out active warning, improves the safety for using LED light.

It should be noted that, in this document, relational terms such as first and second and the like are used merely to a reality Body or operation are distinguished with another entity or operation, are deposited without necessarily requiring or implying between these entities or operation In any actual relationship or order or sequence.Moreover, the terms "include", "comprise" or its any other variant are intended to Non-exclusive inclusion, so that the process, method, article or equipment including a series of elements is not only wanted including those Element, but also including other elements that are not explicitly listed, or further include for this process, method, article or equipment Intrinsic element.Unless otherwise clearly defined and limited, term " installation ", " connected ", " connection " shall be understood in a broad sense, example Such as, it may be fixed connection or may be dismantle connection, or integral connection；It can be mechanical connection, be also possible to be electrically connected It connects；It can be directly connected, the connection inside two elements can also be can be indirectly connected through an intermediary.For this For the those of ordinary skill in field, the concrete meaning of above-mentioned term in the present invention can be understood as the case may be.

In the specification of the utility model, numerous specific details are set forth.Although it is understood that the utility model Embodiment can be practiced without these specific details.In some instances, be not been shown in detail well known method, Structure and technology, so as not to obscure the understanding of this specification.Similarly, it should be understood that disclosed to simplify the utility model And it helps to understand one or more of each utility model aspect, the retouching to the exemplary embodiment of the utility model above In stating, each feature of the utility model is grouped together into a single embodiment, figure, or description thereof sometimes.However, The method of the disclosure should not be explained to be in reflect an intention that the requires of the utility model ratio i.e. claimed in each power The more features of feature being expressly recited in benefit requirement.More precisely, as the following claims reflect, it is practical new It is all features less than single embodiment disclosed above in terms of type.Therefore, it then follows the claim of specific embodiment Thus book is expressly incorporated in the specific embodiment, wherein independent implementation of each claim as the utility model itself Example.It should be noted that in the absence of conflict, the features in the embodiments and the embodiments of the present application can be mutual group It closes.The utility model is not limited to any single aspect, is also not limited to any single embodiment, is also not limited to this Any combination and/or displacement of a little aspects and/or embodiment.Furthermore, it is possible to be used alone the utility model each aspect and/ Or embodiment or with it is one or more other aspect and/or embodiment be used in combination.

Finally, it should be noted that the above various embodiments is only to illustrate the technical solution of the utility model, rather than it is limited System；Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should Understand: it is still possible to modify the technical solutions described in the foregoing embodiments, or to some or all of Technical characteristic is equivalently replaced；And these are modified or replaceed, it does not separate the essence of the corresponding technical solution, and this is practical new The range of each embodiment technical solution of type, should all cover in the claim of the utility model and the range of specification.

Claims (6)

1. a kind of LED light perseverance brightness controlling device, comprising: controller, constant-current driven chip, Voltage stabilizing module and LED light；

The input terminal of the Voltage stabilizing module is electrically connected with external power supply, the electricity of the output end of the Voltage stabilizing module and the controller The voltage of external power supply is converted to first voltage and provides described for the controller by source electrical connection, the Voltage stabilizing module One voltage；

The output end of the controller is electrically connected with the control terminal of the constant-current driven chip, the input terminal of the controller and institute The output end electrical connection of constant-current driven chip is stated, the input terminal of the controller receives the constant-current driven chip output end output Electric current, and output control signals to by the output end of controller the control terminal of constant-current driven chip；

The output end of the constant-current driven chip is also electrically connected with the anode of the LED light；The constant-current driven chip receives institute After stating control signal, the duty ratio for adjusting the constant-current driven chip changes the electricity of the constant-current driven chip output end output Stream makes the LED light be in permanent luminance state.

2. LED light perseverance brightness controlling device according to claim 1, which is characterized in that further include: wireless communication module；

The data input pin of the wireless communication module is electrically connected with the data terminal of the controller；

When the received electric current of controller is greater than predetermined current, the controller passes through data terminal to the wireless communication module Alarm signal is sent, after the wireless communication module receives the alarm signal, sends warning message to exterior terminal.

3. LED light perseverance brightness controlling device according to claim 2, which is characterized in that the predetermined current are as follows: LED light Rated current under nominal power.

4. LED light perseverance brightness controlling device according to claim 1, which is characterized in that the controller are as follows: MKE02Z32VLC4；The constant-current driven chip are as follows: MAX16820；

Wherein, capacitor C1 is equipped between upper 3rd pin of controller MKE02Z32VLC4 and the 6th pin, first voltage passes through resistance R8 is electrically connected with the anode of diode D8, and diode D8 is electrically connected with upper 8th pin of controller MKE02Z32VLC4；

Upper 1st pin of constant-current driven chip MAX1682 is electrically connected with external power supply, and the 4th pin is electrically connected with ground terminal, and the 1st draws Capacitor C2 is equipped between foot and the 4th pin, the 1st pin is electrically connected with one end of inductance L, and the other end of inductance L is with transistor Q's Drain electrical connection, the drain of transistor Q are electrically connected with the anode of diode D1, the cathode of diode D1 and the anode electricity of LED light Connection, the source electrode of transistor Q are electrically connected with the cathode of LED light, and the source electrode of transistor Q is electrically connected with one end of resistance R7, resistance The other end of R7 is electrically connected with upper 2nd pin of constant-current driven chip MAX1682, and resistance R6 is in parallel with resistance R7；Constant current drives core Upper 3rd pin of piece MAX1682 is electrically connected with upper 11st pin of controller MKE02Z32VLC4；Resistance R1, resistance R2, resistance R3 and The anode of resistance R4 series connection, LED light is electrically connected with the other end of resistance R1, and the other end of resistance R4 is electrically connected with ground terminal, and two Pole pipe D2 is in parallel with resistance R4 and the positive of diode D2 is electrically connected with ground terminal；The cathode and controller of diode D2 The upper 19th pin electrical connection of MKE02Z32VLC4.

5. LED light perseverance brightness controlling device according to claim 1, which is characterized in that the Voltage stabilizing module includes: three ends Voltage-stablizer and voltage stabilizing chip；

The input terminal of the three terminal regulator is electrically connected with external power supply, external power supply is converted to second voltage, and by defeated Second voltage is sent to the input terminal of the voltage stabilizing chip by outlet；

Received second voltage is converted to first voltage by the voltage stabilizing chip.

6. LED light perseverance brightness controlling device according to claim 5, which is characterized in that the three terminal regulator is LM7805, the voltage stabilizing chip are SGM2019；

Wherein, the second voltage is positive 5V, and the first voltage is positive 3.3V.