CN105744679A - LED driver - Google Patents
LED driver Download PDFInfo
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- CN105744679A CN105744679A CN201610142864.6A CN201610142864A CN105744679A CN 105744679 A CN105744679 A CN 105744679A CN 201610142864 A CN201610142864 A CN 201610142864A CN 105744679 A CN105744679 A CN 105744679A
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- circuit
- led driver
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- outfan
- service life
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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]
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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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Abstract
The invention discloses an LED driver. The LED driver comprises a current sampling circuit arranged in an LED load loop, a feedback circuit, control circuits, main power circuits and a heath state detection circuit, wherein the input end of the feedback circuit is connected with the current sampling network while the output end of the feedback circuit is connected with the input end of at least one path of control circuit; the output ends of the control circuits are connected with the control ends of the corresponding main power circuits; the input ends of the main power circuits are connected with a power supply while the output ends of the main power circuits are connected to the LED load loop; and the health state detection circuit is connected with the output ends of the main power circuits separately and used for correspondingly prompting the service life states of the LED driver according to the states of the output ends of the main power circuits. The LED driver provided by the invention can correspondingly prompt the service life states of the LED driver according to the states of the output ends of the main power circuits in real time, so that a user can know the service life of the LED driver in time so as to take measures and replace in time; and therefore, the safety performance of the LED system is improved, and economic loss caused by delayed replacement of the ineffective LED driver can be reduced.
Description
Technical field
The present invention relates to Drive technology field, particularly relate to a kind of LED driver.
Background technology
LED is applied to increasing occasion with advantages such as its life-span length, light efficiency height, environmental protections.Owing to the LED life-span itself is more than 50000 hours, the main cause that LED breaks down is led to the driver inefficacy that product is LED light source and is caused.
Generally, user can not know when LED driver lost efficacy or be about to lose efficacy in time, therefore, prior art is all generally just be replaced after LED driver lost efficacy, reduce the security performance of LED information display system, increasing because not knowing that LED driver lost efficacy and failed to carry out LED driver changing the economic loss caused in time, bringing inconvenience to life.
Therefore, how to provide a kind of can the life-span of LED driver be pointed out so that the LED driver reminding user when LED driver is about to lose efficacy is the problem that those skilled in the art are presently required solution.
Summary of the invention
It is an object of the invention to provide a kind of LED driver, can point out accordingly according to the service life state to LED driver that the state of the outfan of main power circuit is real-time, allow users to understand timely the life-span of LED driver, and then can take precautions against in time and change, improve the security performance of LED information display system, decreasing because not knowing that LED driver lost efficacy and failed to carry out LED driver changing the economic loss caused in time.
For solving above-mentioned technical problem, the invention provides a kind of LED driver, including:
It is arranged on the current sample network in LED load loop；
The feedback circuit that input is connected with described current sample network, outfan is connected with the input of the control circuit at least one road respectively；
Outfan controls, with corresponding main power circuit, the described control circuit that end connects；
Input is connected with power supply, the described main power circuit in the described LED load loop of outfan access；
It is connected with the outfan of main power circuit described in every road respectively, and according to the state of the outfan of main power circuit described in every road, the service life state of described LED driver is carried out the health status testing circuit pointed out accordingly.
Preferably, described health status testing circuit specifically include current-limiting resistance and have electric current by time bright, no current by time the display lamp that do not work, and described display lamp and described current-limiting resistance first connect after the overall outfan being connected in parallel on corresponding main power circuit again.
Preferably, described health status testing circuit specifically includes:
Connect with the outfan of corresponding main power circuit, for gathering the voltage sampling circuit of the voltage signal of corresponding main power circuit outfan；
It is connected with each described voltage sampling circuit respectively, for calculating the service life state of described LED driver according to all of voltage signal and described service life state being wirelessly sent to the wireless transmission circuit of user.
Preferably, described health status testing circuit specifically includes:
Connect with the outfan of corresponding main power circuit, for gathering the current sampling circuit of the current signal of corresponding main power circuit outfan；
It is connected with each described current sampling circuit respectively, for calculating the service life state of described LED driver according to all of current signal and described service life state being wirelessly sent to the wireless transmission circuit of user.
Preferably, described wireless transmission circuit is the wireless transmission circuit adopting Zigbee-technology or Bluetooth technology.
Preferably, described health status testing circuit specifically includes:
Connect with the outfan of corresponding main power circuit, for gathering the voltage sampling circuit of the voltage signal of corresponding main power circuit outfan；
It is connected with each described voltage sampling circuit respectively, for the service life state calculating described LED driver according to all of voltage signal the display circuit that described service life state is displayed.
Preferably, described health status testing circuit specifically includes:
Connect with the outfan of corresponding main power circuit, for gathering the current sampling circuit of the current signal of corresponding main power circuit outfan；
It is connected with each described current sampling circuit respectively, for the service life state calculating described LED driver according to all of current signal the display circuit that described service life state is displayed.
Preferably, described health status testing circuit specifically includes:
Connect with the outfan of corresponding main power circuit, for gathering the voltage sampling circuit of the voltage signal of corresponding main power circuit outfan；
It is connected with each described voltage sampling circuit respectively, for calculating the service life state of described LED driver according to all of voltage signal and sending the circuit for alarming of alarm when described service life state is lower than preset value.
Preferably, described health status testing circuit specifically includes:
Connect with the outfan of corresponding main power circuit, for gathering the current sampling circuit of the current signal of corresponding main power circuit outfan；
It is connected with each described current sampling circuit respectively, for calculating the service life state of described LED driver according to all of current signal and sending the circuit for alarming of alarm when described service life state is lower than preset value.
Preferably, described control circuit is pwm control circuit or PFM control circuit.
The invention provides a kind of LED driver, except including current sample network, feedback circuit and the main power circuit at least one road and the control circuit of correspondence thereof, also include being connected with the outfan of every road main power circuit respectively, and according to the state of the outfan of every road main power circuit, the service life state of LED driver is carried out the health status testing circuit pointed out accordingly.Visible, LED driver provided by the invention can be pointed out accordingly according to the service life state to LED driver that the state of the outfan of main power circuit is real-time, allow users to understand timely the life-span of LED driver, and then can take precautions against in time and change, can maximized use LED driver, improve the security performance of LED information display system, decreasing because not knowing that LED driver lost efficacy and failed to carry out LED driver changing the economic loss caused in time.
Accompanying drawing explanation
In order to be illustrated more clearly that the technical scheme in the embodiment of the present invention, the accompanying drawing used required in prior art and embodiment will be briefly described below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, under the premise not paying creative work, it is also possible to obtain other accompanying drawing according to these accompanying drawings.
Fig. 1 is the structural representation of a kind of LED driver provided by the invention；
Fig. 2 is the structural representation of another kind of LED driver provided by the invention；
Fig. 3 is the structural representation of another kind of LED driver provided by the invention；
Fig. 4 is the structural representation of another kind of LED driver provided by the invention；
Fig. 5 is the structural representation of another kind of LED driver provided by the invention.
Detailed description of the invention
The core of the present invention is to provide a kind of LED driver, can point out accordingly according to the service life state to LED driver that the state of the outfan of main power circuit is real-time, allow users to understand timely the life-span of LED driver, and then can take precautions against in time and change, improve the security performance of LED information display system, decreasing because not knowing that LED driver lost efficacy and failed to carry out LED driver changing the economic loss caused in time.
For making the purpose of the embodiment of the present invention, technical scheme and advantage clearly, below in conjunction with the accompanying drawing in the embodiment of the present invention, technical scheme in the embodiment of the present invention is clearly and completely described, obviously, described embodiment is a part of embodiment of the present invention, rather than whole embodiments.Based on the embodiment in the present invention, the every other embodiment that those of ordinary skill in the art obtain under not making creative work premise, broadly fall into the scope of protection of the invention.
Refer to the structural representation that Fig. 1, Fig. 1 are a kind of LED driver provided by the invention, this LED driver includes:
It is arranged on the current sample network 1 in LED load loop；
The feedback circuit 2 that input is connected with current sample network 1, outfan is connected with the input of the control circuit 3 at least one road respectively；
Outfan controls, with corresponding main power circuit 4, the control circuit 3 that end connects；
Specifically, control circuit 3 is PWM (PulseWidthModulation, pulse width modulation) control circuit or PFM (Pulsefrequencymodulation, pulse frequency modulated) control circuit.Certainly, concrete which kind of control circuit of employing is determined according to practical situation.
Specifically, the main power circuit 4 of control circuit 3 and correspondence thereof is specially 4 tunnels.Certainly, the way of the main power circuit 4 of control circuit 3 here and correspondence thereof can also be other numerical value, for instance, 3 tunnels or 5 tunnels, the present invention is not particularly limited at this.
Input is connected with power supply, the main power circuit 4 in outfan access LED load loop；
It is connected with the outfan of every road main power circuit 4 respectively, and according to the state of the outfan of every road main power circuit 4, the service life state of LED driver is carried out the health status testing circuit 5 pointed out accordingly.
It is understandable that, the total current in LED load loop is acquired by current sample network 1, and the current signal collected is sent to feedback circuit 2, feedback circuit 2 exports corresponding voltage signal extremely every road control circuit 3 after receiving current signal, control circuit 3 controls signal to the main power circuit 4 of correspondence accordingly according to the voltage signal output received, the electric current that main power circuit 4 exports according to control signal adjustment, achieve the closed loop control to the total current that all of main power circuit 4 exports, precision is high, it is ensured that the steady operation of LED.
As preferably, health status testing circuit 5 specifically include current-limiting resistance and have electric current by time bright, no current by time the display lamp that do not work, and display lamp and current-limiting resistance first connect after the overall outfan being connected in parallel on corresponding main power circuit 4 again.
Specifically, refer to the structural representation that Fig. 2, Fig. 2 are another kind of LED driver provided by the invention；
It is understandable that, when main power circuit 4 normal operation of control circuit 3 all of in driver and correspondence thereof, then the outfan of each main power circuit 4 all has voltage, namely has electric current to flow through on current-limiting resistance and display lamp, and now all of display lamp is all normally bright；When wherein certain one or more control circuit 3 or the main power circuit 4 of control circuit 3 correspondence break down inefficacy, then corresponding main power circuit 4 outfan can not have voltage, namely now current-limiting resistance and display lamp do not have electric current to flow through, then now display lamp does not work.Therefore, user can know the service life state of LED driver by the light on and off number of viewing lamp, and then can take precautions against in time and change, improve the security performance of LED information display system, decreasing because not knowing that LED driver lost efficacy and failed to carry out LED driver changing the economic loss caused in time.
Then it will be understood that the bright number of display lamp is more many, then illustrate that the health status of now LED driver is more good；Contrary, the bright number of display lamp is more few, then illustrate that the health status of now LED driver is got over not good.
As preferably, health status testing circuit 5 specifically includes:
Connect with the outfan of corresponding main power circuit 4, for gathering the voltage sampling circuit of the voltage signal of corresponding main power circuit 4 outfan；
It is connected with each voltage sampling circuit respectively, for calculating the service life state of LED driver according to all of voltage signal and service life state being wirelessly sent to the wireless transmission circuit of user.
As preferably, wireless transmission circuit is the wireless transmission circuit adopting Zigbee-technology or Bluetooth technology.Certainly, the present invention can also adopt the wireless transmission circuit based on other technologies, for instance based on the wireless transmission circuit of WiFi technology, the present invention is not particularly limited at this, can realize the purpose of the present invention.
Specifically, refer to the structural representation that Fig. 3, Fig. 3 are another kind of LED driver provided by the invention；
Firstly the need of illustrating, in the application, the computational methods of the service life state of wireless transmission circuit are:
It is assumed here that the main power circuit 4 of control circuit 3 and correspondence thereof is altogether N road, wherein, occur that M (M≤N) road is because breaking down inefficacy altogether, then service life state=M/N*100%, therefore, percentage ratio is more little, then illustrate that the health status of now LED driver is got over not good；Contrary, percentage ratio is more big, then illustrate that the health status of now LED driver is more good.
It is understandable that, when main power circuit 4 normal operation of control circuit 3 all of in driver and correspondence thereof, then the outfan of each main power circuit 4 all has voltage, namely the magnitude of voltage that voltage sampling circuit collects is not zero, the service life state that now wireless transmission circuit calculates is 100%；When wherein certain one or more control circuit 3 or the main power circuit 4 of control circuit 3 correspondence break down inefficacy, the outfan of then corresponding main power circuit 4 can not have voltage, namely the magnitude of voltage that now voltage sampling circuit collects is zero, then now wireless transmission circuit can calculate corresponding service life state and service life state is wirelessly sent to the client of user, and circular is divided by total way N with the way M that magnitude of voltage is zero correspondence.Therefore, user can calculate corresponding service life state by the wireless transmission circuit that client shows and know the service life state of LED driver, and then can interpolate that the driver when more renewed, can take precautions against in time and change, improve the security performance of LED information display system, decreasing because not knowing that LED driver lost efficacy and failed to carry out LED driver changing the economic loss caused in time.
As preferably, health status testing circuit 5 specifically includes:
Connect with the outfan of corresponding main power circuit 4, for gathering the current sampling circuit of the current signal of corresponding main power circuit 4 outfan；
It is connected with each current sampling circuit respectively, for calculating the service life state of LED driver according to all of current signal and service life state being wirelessly sent to the wireless transmission circuit of user.
Specifically, here except the signal of Acquisition Circuit and collection thereof be current signal different from above-mentioned voltage signal except, other processes are similar with the understanding process of above-mentioned voltage signal, and the application does not repeat them here.
As preferably, health status testing circuit 5 specifically includes:
Connect with the outfan of corresponding main power circuit 4, for gathering the voltage sampling circuit of the voltage signal of corresponding main power circuit 4 outfan；
It is connected with each voltage sampling circuit respectively, for the service life state calculating LED driver according to all of voltage signal the display circuit that service life state is displayed.
Specifically, refer to the structural representation that Fig. 4, Fig. 4 are another kind of LED driver provided by the invention；
It is understandable that, when main power circuit 4 normal operation of control circuit 3 all of in driver and correspondence thereof, then the outfan of each main power circuit 4 all has voltage, namely the magnitude of voltage that voltage sampling circuit collects is not zero, the service life state that now wireless transmission circuit calculates is 100%；When wherein certain one or more control circuit 3 or the main power circuit 4 of control circuit 3 correspondence break down inefficacy, then corresponding main power circuit 4 outfan can not have voltage, namely the magnitude of voltage that now voltage sampling circuit collects is zero, then now display circuit can calculate corresponding service life state and service life state is displayed, user friendly direct viewing.Therefore, user can know the service life state of LED driver by the service life state that display circuit shows, and then can interpolate that the driver when more renewed, can take precautions against in time and change, improve the security performance of LED information display system, decreasing because not knowing that LED driver lost efficacy and failed to carry out LED driver changing the economic loss caused in time.
As preferably, health status testing circuit 5 specifically includes:
Connect with the outfan of corresponding main power circuit 4, for gathering the current sampling circuit of the current signal of corresponding main power circuit 4 outfan；
It is connected with each current sampling circuit respectively, for the service life state calculating LED driver according to all of current signal the display circuit that service life state is displayed.
Specifically, here except the signal of Acquisition Circuit and collection thereof be current signal different from above-mentioned voltage signal except, other processes are similar with the understanding process of above-mentioned voltage signal, and the application does not repeat them here.
As preferably, health status testing circuit 5 specifically includes:
Connect with the outfan of corresponding main power circuit 4, for gathering the voltage sampling circuit of the voltage signal of corresponding main power circuit 4 outfan；
It is connected with each voltage sampling circuit respectively, for calculating the service life state of LED driver according to all of voltage signal and sending the circuit for alarming of alarm when service life state is lower than preset value.
Specifically, refer to the structural representation that Fig. 5, Fig. 5 are another kind of LED driver provided by the invention；
It is understandable that, when main power circuit 4 normal operation of control circuit 3 all of in driver and correspondence thereof, then the outfan of each main power circuit 4 all has voltage, namely the magnitude of voltage that voltage sampling circuit collects is not zero, the service life state that now wireless transmission circuit calculates is 100%；When wherein certain one or more control circuit 3 or the main power circuit 4 of control circuit 3 correspondence break down inefficacy, then corresponding main power circuit 4 outfan can not have voltage, namely the magnitude of voltage that now voltage sampling circuit collects is zero, then now display circuit can calculate corresponding service life state and to service life state whether lower than preset value, sends alarm when lower than preset value.Therefore, whether user can send alarm by circuit for alarming is known the service life state of LED driver, and then can interpolate that the driver when more renewed, can take precautions against in time and change, improve the security performance of LED information display system, decreasing because not knowing that LED driver lost efficacy and failed to carry out LED driver changing the economic loss caused in time.
It is understood that when warning circuit rings time, then show that the health status of now LED driver is very not good, just should change after time length.
It addition, preset value here is the percentage ratio X/N*100%, X here during minimum also surplus X road in the N road being artificially able to receive that can be 1 or 2 or other numerical value, the present invention is not particularly limited at this.
As preferably, health status testing circuit 5 specifically includes:
Connect with the outfan of corresponding main power circuit 4, for gathering the current sampling circuit of the current signal of corresponding main power circuit 4 outfan；
It is connected with each current sampling circuit respectively, for calculating the service life state of LED driver according to all of current signal and sending the circuit for alarming of alarm when service life state is lower than preset value.
Specifically, here except the signal of Acquisition Circuit and collection thereof be current signal different from above-mentioned voltage signal except, other processes are similar with the understanding process of above-mentioned voltage signal, and the application does not repeat them here.
As preferably, circuit for alarming is specially buzzer alarm circuit.Certainly, buzzer alarm circuit it is not limited in here, it is also possible to for other warning circuit, the present invention is not particularly limited at this.
The invention provides a kind of LED driver, except including current sample network, feedback circuit and the main power circuit at least one road and the control circuit of correspondence thereof, also include being connected with the outfan of every road main power circuit respectively, and according to the state of the outfan of every road main power circuit, the service life state of LED driver is carried out the health status testing circuit pointed out accordingly.Visible, LED driver provided by the invention can be pointed out accordingly according to the service life state to LED driver that the state of the outfan of main power circuit is real-time, allow users to understand timely the life-span of LED driver, and then can take precautions against in time and change, can maximized use LED driver, improve the security performance of LED information display system, decreasing because not knowing that LED driver lost efficacy and failed to carry out LED driver changing the economic loss caused in time.
It should be noted that, in this manual, term " includes ", " comprising " or its any other variant are intended to comprising of nonexcludability, so that include the process of a series of key element, method, article or equipment not only include those key elements, but also include other key elements being not expressly set out, or also include the key element intrinsic for this process, method, article or equipment.When there is no more restriction, statement " including ... .. ... " key element limited, it is not excluded that there is also other identical element in including the process of described key element, method, article or equipment.
Described above to the disclosed embodiments, makes professional and technical personnel in the field be capable of or uses the present invention.The multiple amendment of these embodiments be will be apparent from for those skilled in the art, and generic principles defined herein can without departing from the spirit or scope of the present invention, realize in other embodiments.Therefore, the present invention is not intended to be limited to the embodiments shown herein, and is to fit to the widest scope consistent with principles disclosed herein and features of novelty.
Claims (10)
1. a LED driver, it is characterised in that including:
It is arranged on the current sample network in LED load loop；
The feedback circuit that input is connected with described current sample network, outfan is connected with the input of the control circuit at least one road respectively；
Outfan controls, with corresponding main power circuit, the described control circuit that end connects；
Input is connected with power supply, the described main power circuit in the described LED load loop of outfan access；
It is connected with the outfan of main power circuit described in every road respectively, and according to the state of the outfan of main power circuit described in every road, the service life state of described LED driver is carried out the health status testing circuit pointed out accordingly.
2. LED driver as claimed in claim 1, it is characterized in that, described health status testing circuit specifically include current-limiting resistance and have electric current by time bright, no current by time the display lamp that do not work, and described display lamp and described current-limiting resistance first connect after the overall outfan being connected in parallel on corresponding main power circuit again.
3. LED driver as claimed in claim 1, it is characterised in that described health status testing circuit specifically includes:
Connect with the outfan of corresponding main power circuit, for gathering the voltage sampling circuit of the voltage signal of corresponding main power circuit outfan；
It is connected with each described voltage sampling circuit respectively, for calculating the service life state of described LED driver according to all of voltage signal and described service life state being wirelessly sent to the wireless transmission circuit of user.
4. LED driver as claimed in claim 1, it is characterised in that described health status testing circuit specifically includes:
Connect with the outfan of corresponding main power circuit, for gathering the current sampling circuit of the current signal of corresponding main power circuit outfan；
It is connected with each described current sampling circuit respectively, for calculating the service life state of described LED driver according to all of current signal and described service life state being wirelessly sent to the wireless transmission circuit of user.
5. the LED driver as described in claim 3 or 4, it is characterised in that described wireless transmission circuit is the wireless transmission circuit adopting Zigbee-technology or Bluetooth technology.
6. LED driver as claimed in claim 1, it is characterised in that described health status testing circuit specifically includes:
Connect with the outfan of corresponding main power circuit, for gathering the voltage sampling circuit of the voltage signal of corresponding main power circuit outfan；
It is connected with each described voltage sampling circuit respectively, for the service life state calculating described LED driver according to all of voltage signal the display circuit that described service life state is displayed.
7. LED driver as claimed in claim 1, it is characterised in that described health status testing circuit specifically includes:
Connect with the outfan of corresponding main power circuit, for gathering the current sampling circuit of the current signal of corresponding main power circuit outfan；
It is connected with each described current sampling circuit respectively, for the service life state calculating described LED driver according to all of current signal the display circuit that described service life state is displayed.
8. LED driver as claimed in claim 1, it is characterised in that described health status testing circuit specifically includes:
Connect with the outfan of corresponding main power circuit, for gathering the voltage sampling circuit of the voltage signal of corresponding main power circuit outfan；
It is connected with each described voltage sampling circuit respectively, for calculating the service life state of described LED driver according to all of voltage signal and sending the circuit for alarming of alarm when described service life state is lower than preset value.
9. LED driver as claimed in claim 1, it is characterised in that described health status testing circuit specifically includes:
Connect with the outfan of corresponding main power circuit, for gathering the current sampling circuit of the current signal of corresponding main power circuit outfan；
It is connected with each described current sampling circuit respectively, for calculating the service life state of described LED driver according to all of current signal and sending the circuit for alarming of alarm when described service life state is lower than preset value.
10. LED driver as claimed in claim 1, it is characterised in that described control circuit is pwm control circuit or PFM control circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610142864.6A CN105744679B (en) | 2016-03-14 | 2016-03-14 | A kind of LED driver |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610142864.6A CN105744679B (en) | 2016-03-14 | 2016-03-14 | A kind of LED driver |
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| CN105744679A true CN105744679A (en) | 2016-07-06 |
| CN105744679B CN105744679B (en) | 2018-12-11 |
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| CN201610142864.6A Active CN105744679B (en) | 2016-03-14 | 2016-03-14 | A kind of LED driver |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106371038A (en) * | 2016-08-16 | 2017-02-01 | 腾讯科技（深圳）有限公司 | Lighting equipment's health state determining method, apparatus and lighting equipment |
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| CN101260997A (en) * | 2008-04-24 | 2008-09-10 | 辽宁九通电力电子有限公司 | Tandem LED driven intelligence control system possessing output protecting function |
| CN102098831A (en) * | 2009-12-11 | 2011-06-15 | 乐金显示有限公司 | Apparatus and method of driving light source |
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| CN106371038A (en) * | 2016-08-16 | 2017-02-01 | 腾讯科技（深圳）有限公司 | Lighting equipment's health state determining method, apparatus and lighting equipment |
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| Publication number | Publication date |
|---|---|
| CN105744679B (en) | 2018-12-11 |
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