CN111447711B - Lamp protection circuit, lamp and lamp dimming method - Google Patents
Lamp protection circuit, lamp and lamp dimming method Download PDFInfo
- Publication number
- CN111447711B CN111447711B CN202010323244.9A CN202010323244A CN111447711B CN 111447711 B CN111447711 B CN 111447711B CN 202010323244 A CN202010323244 A CN 202010323244A CN 111447711 B CN111447711 B CN 111447711B
- Authority
- CN
- China
- Prior art keywords
- dimming
- lamp
- signal
- main control
- control module
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B20/00—Energy efficient lighting technologies, e.g. halogen lamps or gas discharge lamps
- Y02B20/30—Semiconductor lamps, e.g. solid state lamps [SSL] light emitting diodes [LED] or organic LED [OLED]
Abstract
The embodiment of the invention discloses a lamp protection circuit, a lamp and a lamp dimming method. This lamps and lanterns protection circuit includes: the detection module is connected with a lamp holder of the lamp and used for detecting a current signal and a voltage signal of the lamp holder; the main control module is connected with the detection module and used for determining first required power according to the current signal and the voltage signal; and the CSA communication module is respectively connected with the power supply module and the main control module of the lamp and is used for sending the first required power to the power supply module of the lamp. According to the lamp protection circuit provided by the embodiment, the main control module calculates the current required power according to the current signal and the voltage signal output by the detection module, the main control module sends the required power to the power supply module of the lamp through the CSA communication module, the power supply module is indicated to output the corresponding power, the power supply module can be adjusted and output in a self-adaptive mode based on the load condition, the light supplement lamp is protected, and the damage to the light supplement lamp is avoided.
Description
Technical Field
The embodiment of the invention relates to the technology of power supply modules, in particular to a lamp protection circuit, a lamp and a lamp dimming method.
Background
The LED plant light supplement lamp is a lamp which takes red and blue LEDs as light sources, and light replaces sunlight to supplement light to plants according to the sunlight required by the growth rule of the plants. Compared with the traditional light source, the LED light source has the advantages of pure light source, multiple wavelength types, energy conservation, environmental protection, less heat generation, convenience in control and the like.
Currently, when the LED plant light supplement lamp is used, the output current of a power supply cannot be automatically adjusted according to the plugging and unplugging condition of the LED lamp, so that when the LED lamp is unplugged, the output power of the power supply exceeds the bearing capacity of a load, and the LED lamp is damaged; or when the LED lamp is added, the output power of the power supply is smaller than the required value of the load, so that the brightness of the LED lamp is insufficient and the use requirement cannot be met.
Disclosure of Invention
The embodiment of the invention provides a lamp protection circuit, a lamp and a lamp dimming method, which can automatically detect the number of connected LED lamps and perform self-adaptive adjustment on the output power of a power supply.
In a first aspect, an embodiment of the present invention provides a lamp protection circuit, including:
the detection module is connected with a lamp holder of a lamp and used for detecting a current signal and a voltage signal of the lamp holder;
the main control module is connected with the detection module and used for determining first required power according to the current signal and the voltage signal;
and the CSA communication module is respectively connected with the power supply module of the lamp and the main control module and is used for sending the first required power to the power supply module of the lamp.
In a second aspect, an embodiment of the present invention further provides a lamp, including a power module, a lamp socket, and at least one lamp protection circuit according to any embodiment of the present invention;
the power supply module is used for supplying power to each light supplement lamp;
the lamp holder is used for connecting and fixing the light supplementing lamp.
In a third aspect, an embodiment of the present invention further provides a lamp dimming method, which is applied to the lamp according to any embodiment of the present invention, and the method includes:
a detection module of a lamp protection circuit in a lamp detects a lamp holder in the lamp to generate a detection signal;
the main control module determines the required power according to the detection signal;
and the main control module adjusts the output power of a power supply module in the lamp according to the required power.
The lamp protection circuit provided by the embodiment of the invention detects the lamp holder by setting the detection circuit to detect whether the lamp holder is connected with the light supplement lamp or not, so that whether the number of the light supplement lamps connected with the lamp holder is changed or not can be detected; the main control module calculates the current power of the light supplement lamp connected at present, namely the current required power, according to the current signal and the voltage signal output by the detection module, and the main control module sends the required power to the power supply module of the lamp through the CSA communication module to indicate the power supply module to output the corresponding power. The lamp protection circuit provided by the embodiment of the invention can be used for detecting the light supplement lamp in the lamp in real time, adjusting the output of the power supply module in real time according to the detection result, realizing that the power supply module can adaptively adjust the output based on the load condition, ensuring that the light supplement lamp can emit light according to the set brightness requirement, playing the best light supplement effect, protecting the light supplement lamp and avoiding damaging the light supplement lamp.
Drawings
Fig. 1 is a schematic structural diagram of a lamp protection circuit according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of another lamp protection circuit according to an embodiment of the present invention;
fig. 3 is a schematic structural diagram of a lamp according to an embodiment of the present invention;
fig. 4 is a schematic structural diagram of another lamp according to an embodiment of the present invention;
fig. 5 is a flowchart of a lamp dimming method according to an embodiment of the present invention;
fig. 6 is a flowchart of another lamp dimming method according to an embodiment of the present invention.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention. It should be further noted that, for the convenience of description, only some of the structures related to the present invention are shown in the drawings, not all of the structures.
Fig. 1 is a schematic structural diagram of a lamp protection circuit according to an embodiment of the present invention, where the lamp protection circuit can be applied to a plant light supplement lamp, and can adaptively adjust the plant light supplement lamp. Referring to fig. 1, the lamp protection circuit 10 includes:
the detection module 110 is connected with a lamp holder of the lamp and is used for detecting a current signal and a voltage signal of the lamp holder;
the main control module 120 is connected with the detection module 110, and the main control module 120 is configured to determine a first required power according to the current signal and the voltage signal;
the CSA communication module 130 is connected to the power module of the lamp and the main control module 120, respectively, and is configured to send the first required power to the power module of the lamp.
Specifically, the lamp holder is used for connecting the light supplement lamp, and when the lamp holder is not connected with the light supplement lamp, the lamp holder is equivalent to an open circuit and has no current signal; when the lamp holder is connected with the light supplement lamp, the lamp holder forms a loop with the power supply circuit through the light supplement lamp, and at the moment, a current signal can be generated in the loop.
The light filling lamp in this embodiment can be the LED lamp, and every LED lamp can include a plurality of LED lamp pearls that can launch different colours to satisfy the spectrum needs of the different growth stages of multiple heterogeneous plant.
In this embodiment, the lamp sockets are arranged in parallel, so that the lamp sockets have the same voltage value, and the detection module 110 may obtain the voltage signal of each lamp socket by sampling the voltage signal of one of the parallel branches. The detection module 110 sends the detected voltage signal of the parallel branch and the current signal of each lamp holder to the main control module 120, so that the main control module 120 can determine the power of each lamp holder (when a fill light is connected, there is a corresponding power value, and when the fill light is not connected, the power value is zero), and then the power of each lamp holder is summed to obtain the current total power.
In one embodiment, the detection module 110 employs an AD sampling circuit for current detectionThe sampling resistor is arranged in the path, the AD sampling circuit is connected to the AD detection port of the main control module 120, the voltage value of the sampling resistor is collected and is output to the main control module 120 after signal amplification is carried out on the voltage value through the operational amplifier, and the main control module 120 calculates the current value I flowing through the lamp holder according to the following formulaout，
In the formula IoutThe value of the current flowing through the lamp base, A is the amplification factor, RiIs the resistance value of the sampling resistor, VAD-OUTFor sampling the voltage of the lamp base, VAD-ERFor sampling values of a reference voltage, VERIs a reference voltage.
Similarly, the voltage value of the parallel branch can also be detected by the AD sampling circuit, the main control module 120 collects the voltage detection signal at the output end of the AD sampling circuit through other AD sampling ports, and calculates the voltage value V of the lamp holder according to the voltage detection signal and the following formulaout，
In the formula, VoutIs the voltage value of the lamp base, VAD-OUTFor sampling the voltage of the lamp base, VAD-OUTIs a voltage sampling signal, R is the resistance value of a divider resistor, RsumFor sampling the resistance value of the total resistance, VAD-ERFor sampling values of a reference voltage, VERIs a reference voltage, VAD-OUTThe voltage of the lamp holder is sampled.
The main control module 120 may be a single chip microcomputer, for example. The main control module 120 may calculate the current power of each light emitting lamp according to the calculated current value of each lamp socket and the voltage value of the parallel branch, and then may calculate the current load power, i.e., the first required power, by summing. The main control module 120 converts the first required power into a CSA signal through the CSA communication module 130, and sends the CSA signal to the power module of the lamp, and the power module outputs the first required power correspondingly in response to the demand, so that when the number of the light supplement lamps connected to the lamp holder is detected to be changed, the output of the power supply can be correspondingly adjusted, and the self-adaptive adjustment between the power supply and the load is realized. For example, when part of the fill light in the lamp holder is removed, if the output power of the power supply is not adjusted, the power applied to the existing fill light may exceed a rated value, and the fill light may be damaged. Therefore, in this embodiment, the detection module 110 sends the detected current signal and the voltage signal of the parallel branch to the main control module 120, the main control module 120 calculates and determines the current load power, and the main control module 120 sends the current load power to the power module of the lamp through the CSA communication module 130 to indicate the power module to output the corresponding power, so that the power supply correspondingly reduces the output power along with the change of the number of the light supplement lamps, and the light supplement lamps are protected.
The lamp protection circuit provided by the embodiment of the invention detects the lamp holder by setting the detection circuit to detect whether the lamp holder is connected with the light supplement lamp or not, so that whether the number of the light supplement lamps connected with the lamp holder is changed or not can be detected; the main control module calculates the current power of the light supplement lamp connected at present, namely the current required power, according to the current signal and the voltage signal output by the detection module, and the main control module sends the required power to the power supply module of the lamp through the CSA communication module to indicate the power supply module to output the corresponding power. The lamp protection circuit provided by the embodiment of the invention can be used for detecting the light supplement lamp in the lamp in real time, adjusting the output of the power supply module in real time according to the detection result, realizing that the power supply module can adaptively adjust the output based on the load condition, ensuring that the light supplement lamp can emit light according to the set brightness requirement, playing the best light supplement effect, protecting the light supplement lamp and avoiding damaging the light supplement lamp.
Optionally, fig. 2 is a schematic structural diagram of another lamp protection circuit 10 according to an embodiment of the present invention. On the basis of the above embodiment, as shown in fig. 2, the lamp protection circuit 10 further includes a dimming module 140, the dimming module 140 is connected to the main control module 120, and the dimming module 140 is configured to receive a dimming signal and send the dimming signal to the main control module 120;
the main control module 120 is further configured to determine a second required power according to the dimming signal, and send the second required power to the power module of the lamp through the CSA communication module 130.
Specifically, the dimming module 140 is configured to match the dimming device and receive a dimming trigger signal of the dimming device, so as to generate a corresponding dimming signal to adjust the brightness of the fill-in lamp. For example, after the dimming device sends a dimming trigger signal for reducing the brightness, the dimming module 140 correspondingly outputs a downshift dimming signal, the main control module 120 communicates with the dimming module 140 according to a preset communication protocol to obtain a brightness adjustment value based on the downshift dimming signal, the main control module 120 confirms the number of currently connected light supplement lamps, and determines the second required power by combining the number of light supplement lamps and the brightness adjustment value, so as to ask for the corresponding power from the power supply module.
It should be noted that before the main control module 120 in the lamp protection circuit 10 adjusts the brightness of the light supplement lamps based on the dimming signal, it is necessary to first determine the number of the light supplement lamps that are currently connected, to determine a brightness adjustment reference according to the number of the light supplement lamps that are currently connected, and then calculate a brightness adjustment value according to a corresponding brightness adjustment amplitude or brightness adjustment value, to determine a second required power, and further convert the second required power into a corresponding CSA signal through the CSA communication module 130, and output the corresponding CSA signal to the power module, so as to instruct the power module to correspondingly adjust the output power.
Optionally, the main control module 120 may determine whether the corresponding lamp socket is currently in an idle connection state or is already connected with a light supplement lamp according to whether the current value output by the detection module 110 is zero, and finally determine the number of light supplement lamps currently connected to the lamp.
Or, the main control module 120 may determine the number of the light supplement lamps currently connected to the lamp according to the high and low levels of the preset port. Specifically, the preset port of the main control module 120 is connected with a comparator, when the light supplement lamp is inserted into the lamp holder and is lighted, the corresponding circuit is turned on, the comparator connected to the preset port of the main control module 120 starts to output current, and when the output current value is greater than the set value of the comparator, the preset port of the main control module 120 may be subjected to level inversion (from high to low or from low to high), so that the main control module 120 may determine whether the light supplement lamp is connected to the lamp holder by detecting a level inversion signal of the preset port.
Optionally, with continued reference to fig. 2, the dimming module 140 includes a 0-10V dimming submodule 141 and/or an RS485 dimming submodule 142;
the 0-10V dimming submodule 141 is configured to output an analog dimming signal to the main control module 120;
the RS485 dimming submodule 142 is configured to output a digital dimming signal to the main control module 120.
Specifically, the 0-10V dimming sub-module 141 is configured to match with the analog dimming device and output an analog dimming signal to the main control module 120 in response to a dimming command of the analog dimming device.
The RS485 dimming submodule 142 is configured to communicate with the digital dimming device according to an RS485 communication protocol, and output a digital dimming signal to the main control module 120 in response to a dimming command of the digital dimming device.
In this embodiment, the dimming module 140 can be matched with different types of dimming devices by setting the 0-10V dimming submodule 141 and/or the RS485 dimming submodule 142, so that the applicability of the lamp protection circuit 10 is improved.
The dimming principle of the 0-10V dimming submodule 141 and the RS485 dimming submodule 142 can be referred to the introduction of the method embodiment.
Optionally, on the basis of the above embodiment, the dimming module 140 includes a signal amplifier;
when the dimming module 140 is connected in series with other dimming modules 140, the signal amplifier is configured to relay and amplify the dimming signal input by the previous dimming module 140 and output the dimming signal to the next dimming module 140.
Specifically, the dimming modules 140 in the present embodiment may be connected in series, and in a case where one dimming module 140 is configured for one luminaire, the connection of a plurality of dimming modules 140 in series is equivalent to the connection of a plurality of luminaires in series. Under the working condition, brightness adjustment can be carried out on a plurality of lamps by using only one dimming device. The signal amplifier may be, for example, a signal follower, an input end of the signal follower is connected to an output end of the first-stage dimming module 140, and an output end of the signal follower is connected to an input end of the next-stage dimming module 140, so that the signal follower can follow the dimming signal at the input end to perform corresponding output. For example, when the dimming signal of the previous stage is 10V, the signal follower performs the following process, and then correspondingly outputs the dimming signal of 10V, so that the dimming signal of the previous stage is transmitted to the next-stage dimming module 140 without distortion until the dimming signal is transmitted to the target dimming module 140. In this embodiment, by configuring the signal amplifier in the dimming module 140, when a plurality of lamps are connected in series, the luminance of the light supplement lamps of different lamps can be adjusted by only one dimming device, and the dimming signal is transmitted to the corresponding lamps without distortion, so as to control the light supplement lamps to accurately adjust the luminance according to the dimming command of the user.
In one embodiment, 256 plant supplementary lighting lamps can be controlled by each channel of the dimming device by configuring a signal amplifier in the dimming module 140 to relay and amplify the dimming signal.
Optionally, an embodiment of the present invention further provides a lamp, fig. 3 is a schematic structural diagram of the lamp provided in the embodiment of the present invention, and referring to fig. 3, the lamp 1 includes a power module 20, a lamp socket 30, and at least one lamp protection circuit 10 provided in any embodiment of the present invention;
the power supply module 20 is used for supplying power to each light supplement lamp;
the lamp socket 30 is used for connecting and fixing the fill light.
Specifically, each luminaire 1 is provided with the power supply module 20, so that each luminaire 1 can operate independently. By arranging the lamp protection circuit 10 in the lamp 1, the lamp 1 can adaptively adjust the output power of the power module 20 according to the number of the connected supplementary lighting lamps, so as to protect the supplementary lighting lamps in the lamp 1. And can respond to user's dimming command, adjust the luminance of each light filling lamp to satisfy the light filling demand to the plant.
Optionally, fig. 4 is a schematic structural diagram of another lamp provided in the embodiment of the present invention. On the basis of the above embodiment, as shown in fig. 4, the luminaire 1 further includes a dimming device 40, the dimming device 40 is connected to the dimming module 140 in the luminaire protection circuit 10, and the dimming device 40 is configured to detect the dimming trigger signal and send the dimming signal to the dimming module 140 based on the dimming trigger signal.
Specifically, the dimming trigger signal refers to a dimming command signal issued by the user to the dimming device 40. After receiving the dimming trigger signal, the dimming device 40 generates a dimming signal, and outputs the dimming signal to the dimming module 140 in the lamp protection circuit 10, the dimming module 140 feeds back dimming information to the main control module 120 in the lamp protection circuit 10, and the main control module 120 correspondingly adjusts the brightness of the light supplement lamp.
Optionally, with continued reference to fig. 4, the dimming device 40 comprises at least a WiFi control module 41 and/or a dimming controller 42, wherein,
the WiFi control module 41 is used for being in communication connection with the terminal equipment so as to respond that the terminal equipment remotely sends dimming signals to the dimming module;
the dimming controller 42 is used to send a dimming signal to the dimming module at a close distance.
Specifically, by arranging the WiFi control module 41 to be in communication connection with the terminal device, the user can remotely adjust the lamp 1 through the terminal device, so that the user can use the lamp conveniently, and the application range of the lamp 1 is also improved. Install Application program (APP) of control light filling lamp luminance on the terminal, the user sets for the adjustting of the lighteness value through APP, and APP generates adjustting of the lighteness information according to the adjustting of the lighteness value that the user set for to the realization is to the adjustting of the lighteness of light filling lamp. The terminal can be, for example, a smart phone, a computer, a smart watch, and the like.
The dimming control 42 can be used to adjust the brightness of the luminaire 1 from a close distance. The dimming controller 42 and the WiFi control module 41 convert the dimming trigger signal into a 0-10V signal or an RS485 signal through a built-in signal conversion module and output the signal to the dimming module 140, so as to adjust the brightness of the light supplement lamp in the lamp 1.
According to the lamp provided by the embodiment of the invention, each lamp can work independently by arranging the power supply module for the lamp; through set up the lamps and lanterns protection circuit including the module of adjusting luminance in lamps and lanterns for lamps and lanterns can match and data interaction with the equipment of adjusting luminance, thereby the user can carry out luminance control to the light filling lamp in the lamps and lanterns through the equipment of adjusting luminance. Meanwhile, a dimming module in the lamp protection circuit can communicate with dimming equipment through an analog signal or a digital signal, so that brightness adjustment is realized according to the analog dimming signal or the digital dimming signal, and the applicability of the lamp is improved; through configuration wiFi control module in the equipment of adjusting luminance for the user can carry out long-range dimming to lamps and lanterns based on wiFi control module, when satisfying user's use habit, for the user provides abundanter and convenient and fast's brightness control strategy, has improved user experience.
Optionally, an embodiment of the present invention further provides a lamp dimming method, where the lamp dimming method is applicable to a situation where a lamp performs adaptive adjustment according to the number of light supplement lamps and adjusts the brightness of the light supplement lamps according to an adjustment command of a user. Fig. 5 is a flowchart of a lamp dimming method according to an embodiment of the present invention, and referring to fig. 5, the lamp dimming method includes:
s510, a detection module of a lamp protection circuit in the lamp detects a lamp holder in the lamp to generate a detection signal.
The lamp protection circuit in the lamp is connected with a lamp holder of the lamp to detect the lamp holder. The detection circuit may include a current detection circuit and a voltage detection circuit, and accordingly, the detection signal may include a current detection signal and a voltage detection signal. The aim of detecting the lamp is to detect whether the light supplement lamps in the lamp are changed in real time, so that the output of the power supply is correspondingly adjusted when the number of the light supplement lamps in the lamp is changed, and the corresponding matching of the output and the load is realized. For example, when part of the light supplement lamps in the lamp are removed, the power distributed to each light supplement lamp is correspondingly increased, and at this time, if the output of the power supply is not adjusted, when the power loaded to the light supplement lamps exceeds the rated power of the light supplement lamps, the light supplement lamps are broken down, so that the light supplement lamps are damaged; or, when the number of the light supplement lamps in the lamp increases, if the output of the power supply is not adjusted, the power distributed to each light supplement lamp is reduced, the brightness of the light supplement lamps is reduced, the light supplement requirements on plants cannot be met, and the light supplement effect is reduced. Therefore, under the condition that the number of the light supplement lamps is increased or reduced, the output of the power supply needs to be adjusted according to the detection result of the light supplement lamps, the light supplement lamps are protected, and the light supplement lamps achieve the best light supplement effect.
S520, the main control module in the lamp protection circuit determines the required power according to the detection signal.
The detection signals comprise current detection signals and voltage detection signals of all lamp holders, so that the main control module can calculate the power of all the light supplementing lamps according to the current detection signals and the voltage detection signals, and the actual power of the lamp in the current state can be determined by summarizing the power of all the light supplementing lamps, namely the required power of the lamp.
S530, the main control module adjusts the output power of the power supply module in the lamp according to the required power.
The main control module is connected with the power supply module through the CSA communication module, the CSA communication module converts the required power output by the main control module into a CSA signal and sends the CSA signal to the power supply module, the power supply module is indicated to correspondingly adjust the output power, and the power supply module of the lamp can adaptively adjust the output power when the number of the light supplement lamps in the lamp changes.
According to the lamp dimming method provided by the embodiment of the invention, the lamp holder is automatically detected through the detection module in the lamp protection circuit in the lamp, so that whether the light supplement lamp connected with the lamp holder is changed or not is detected, the detection result of the lamp holder is sent to the main control module in the lamp protection circuit, the main control module determines the current required power according to the detection result, and when the number of the light supplement lamps connected with the lamp holder is changed, the calculated required power is correspondingly changed, namely the required power reflects the connection condition of the light supplement lamp. The main control module sends the required power to the power supply module, so that the power supply module adjusts according to the required power, and correspondingly outputs according to the required power, and accordingly, the output of the power supply is correspondingly adjusted according to the change condition of the light supplement lamp in the lamp, namely, the output power of the light supplement lamp is adaptively adjusted according to the load change of the lamp, the light supplement lamp is protected, and the light supplement lamp can play the best light supplement effect.
Optionally, on the basis of the foregoing embodiment, the lamp dimming method further includes:
if the dimming equipment of the lamp detects the dimming trigger signal, the dimming equipment converts the dimming trigger signal into a dimming signal, wherein the dimming signal comprises an analog dimming signal and/or a digital dimming signal;
correspondingly, the main control module determines the required power according to the detection signal, and the method comprises the following steps:
and the main control module determines the required power according to the detection signal and the dimming signal.
When the dimming device of the lamp detects the dimming trigger signal, the dimming device converts the dimming trigger signal into a dimming signal, and the main control module responds to the dimming signal output by the dimming module to adjust the brightness of the light supplementing lamp.
In the starting stage of the lamp protection circuit, the main control module in the lamp protection circuit correspondingly adjusts the communication mode according to the dimming module so as to be matched with the dimming module. The lamp protection circuit provided by the embodiment is reserved with a plurality of communication interfaces to support a plurality of communication protocols to perform dimming control. Optionally, the dimming mode may be one or more of a 0-10V mode, a PWM mode, an RS485 mode, a CSA mode, and a WiFi mode, where the 0-10V mode and the PWM mode are analog signal dimming modes, and the RS485 mode, the CSA mode, and the WiFi mode are digital signal dimming modes.
In the embodiment, in the analog signal dimming mode, the 0-10V dimming signal and the PWM dimming signal adjust the brightness of the fill-in light according to the same control strategy; under the digital signal dimming mode, the RS485 dimming signal, the CSA dimming signal and the WiFi dimming signal adjust the brightness of the light supplementing lamp according to the same control strategy. The following describes two cases of the dimming signal being an analog dimming signal and a digital dimming signal.
Optionally, if the dimming signal is an analog dimming signal, the main control module compares the dimming signal with a preset light-off signal threshold and a preset light-on signal threshold;
if the dimming signal is greater than or equal to the light-on signal threshold, the main control module determines the number of the light supplement lamps connected with the lamp holder according to the detection signal or the output signal of a preset port in the main control module; when the main control module determines that the number of the light supplement lamps is zero, the main control module determines required power according to a preset value; or when the main control module determines that the number of the light supplement lamps is not zero, the main control module determines the current load power according to the number of the light supplement lamps and the power of each light supplement lamp, and determines the required power according to the load power and the dimming signal;
if the dimming signal is smaller than the light-on signal threshold and smaller than or equal to the light-off signal threshold, the main control module determines that the required power is zero to control the power supply module to stop power output;
and if the dimming signal is smaller than the light-on signal threshold and larger than the light-off signal threshold, the main control module determines the required power according to the last dimming signal.
Specifically, in the analog signal dimming mode, a main control module in the lamp protection circuit collects an external analog dimming signal and collects a voltage value and a current value of each light supplement lamp.
The light-off signal threshold and the light-on signal threshold are used for judging the voltage value of the dimming signal, and when the voltage value of the dimming signal is greater than or equal to the light-on signal threshold, the main control module judges that the current dimming signal is a light-on signal; when the voltage value of the dimming signal is smaller than or equal to the light-off signal threshold value, the main control module judges that the current dimming signal is a light-off signal.
It should be noted that, when the signal of adjusting luminance is greater than or equal to the signal threshold value of turning on light, if the quantity that main control module confirmed current light filling lamp is zero, main control module confirms required power according to the default, and the benefit that sets up like this lies in, when light filling lamp inserts the lamp stand, can guarantee that the light filling lamp can in time be detected. A specific method of determining the required power based on the preset value can be seen from the following description.
In an optional embodiment mode of this embodiment, the main control module in the lamp protection circuit determines the number of light supplement lamps currently connected in the lamp according to the following method:
when the light-compensating lamp is connected to the lamp holder, current can pass through the lamp holder, and when the lamp holder is in idle connection, the lamp holder is equivalent to open circuit, and current can not pass through the lamp holder. Therefore, the main control module can judge whether the lamp holder is connected with the light supplementing lamp according to whether the current detection signal output by the detection circuit is zero or not, and finally determine the number of the lamp holders connected with the light supplementing lamp, namely the number of the light supplementing lamp.
In another optional embodiment of this embodiment, the main control module in the lamp protection circuit determines the number of the fill-in lamps connected to the lamp socket according to an output signal of a preset port of the main control module in the lamp protection circuit. Optionally, a comparator is connected to a preset port of the main control module, after the light supplement lamp is inserted into a lamp holder to be lightened, a circuit corresponding to the lamp holder is conducted, the comparator connected with the preset port of the main control module starts to output current, when the output current is larger than a set value of the comparator, the preset port of the main control module can be subjected to level overturning, therefore, whether level overturning signals exist in the preset ports or not is detected by the main control module, the preset ports can be determined to be connected with the light supplement lamp, and therefore the number of all the light supplement lamps in the lamp is determined.
The main control module determines the required power according to the last dimming signal, specifically:
if the last dimming signal is a light-on signal, the main control module determines the required power according to a preset value;
if the last dimming signal is a light-off signal, the main control module determines that the required power is zero to control the power supply module to stop power output.
Specifically, the preset value is a preset adjustment value with a certain adjustment ratio, which reflects the adjustment amplitude of the existing power. It should be noted that, when the main control module determines the required power according to the preset value, the main control module determines a power reference value based on the currently connected supplementary lighting lamp in the lamp, and calculates according to the preset value on the basis of the power reference value to obtain the required power. That is, the power reference value used for calculating the required power corresponds to the total power of the currently connected fill light. For example, if the number of currently connected fill-in lamps is 9, the current reference power is the total power of the 9 fill-in lamps; when the number of the fill-in lamps is reduced to 5, the reference power at this time is the total power of the 5 fill-in lamps. In one embodiment, the preset value is 10%, that is, the main control module sends the required power to the power supply module according to 110% of the current total power.
Similarly, under this operating mode, if last dimming signal is the signal of turning on the light, then the advantage that main control module confirms required power according to the default lies in, when the light filling lamp inserts the lamp stand, can guarantee that the light filling lamp can in time be detected.
Optionally, if the dimming signal is a digital dimming signal and if the dimming signal is not zero, the main control module determines the number of the light supplement lamps connected to the lamp holder according to the detection signal or according to an output signal of a preset port in the main control module; when the main control module determines that the number of the light supplement lamps is zero, the main control module determines required power according to a preset value; or when the main control module determines that the number of the light supplement lamps is not zero, the main control module determines the current load power according to the number of the light supplement lamps and the power of each light supplement lamp, and determines the required power according to the load power and the dimming signal;
if the dimming signal is zero, the main control module determines that the required power is zero to control the power supply module to stop outputting.
Specifically, in the digital signal dimming mode, a main control module in the lamp protection circuit waits for a dimming signal to be updated, and after the dimming signal is obtained, the main control module acquires a voltage value and a current value of each light supplement lamp.
When the dimming signal is not zero and the number of the light supplement lamps is zero, the method for determining the required power by the main control module based on the preset value is consistent with the method for determining the required power based on the preset value under the analog dimming signal, and details are not repeated here.
Optionally, on the basis of the above embodiment, after the main control module determines the required power according to the detection signal, the lamp dimming method further includes:
the main control module determines the current state of the corresponding light supplementing lamp according to the dimming signal, the relation between the current detection value of each light supplementing lamp in the detection signal and the preset current alarm threshold value, and the relation between the voltage detection value of each light supplementing lamp in the detection signal and the preset voltage alarm threshold value, and sends the current state to the monitoring equipment.
Specifically, the main control module specifically determines the current state of the light supplement lamp according to the relationship between the current value and the voltage value of the light supplement lamp and the alarm threshold value respectively according to whether the dimming value is zero, and reports the current state to the monitoring system.
When the dimming value is not equal to 0:
if the light supplement lamp current is 0, the light supplement lamp is judged to be open, the main control module sets the light supplement lamp state to be open, and the main control module reduces the dimming signal voltage value to protect other light supplement lamps.
If the light supplement lamp current is smaller than the lower current alarm limit, the light supplement lamp current is judged to be abnormal, the main control module sets the light supplement lamp state to be the light supplement lamp current abnormality, and the main control module reduces the voltage value of the dimming signal to protect other light supplement lamps.
If the light supplement lamp current is larger than the upper current alarm limit, the light supplement lamp is judged to be in short circuit, the main control module sets the light supplement lamp state to be in short circuit, and the main control module reduces the voltage value of the dimming signal to protect other light supplement lamps.
If the light supplement lamp current is larger than the current alarm lower limit and smaller than the current alarm upper limit, the light supplement lamp is judged to be normal, and the main control module sets the state of the light supplement lamp to be normal.
If the voltage of the supplementary lighting lamp is larger than the lower voltage alarm limit and smaller than the upper voltage alarm limit, the voltage is judged to be normal, and the main control module sets the state of the supplementary lighting lamp to be normal.
If the voltage of the supplementary lighting lamp is smaller than the lower voltage alarm limit, the voltage is judged to be low, and the main control module sets the state of the supplementary lighting lamp to be low.
If the voltage of the supplementary lighting lamp is larger than the upper voltage alarm limit, the voltage is judged to be higher, and the main control module sets the state of the supplementary lighting lamp to be higher.
When the dimming value is equal to 0:
if the light supplement lamp current is smaller than the lower current alarm limit, the main control module sets the light supplement lamp state to be normal.
If the light supplement lamp current is larger than the lower current alarm limit, the light supplement lamp is judged to be abnormal in turning off, and the main control module sets the light supplement lamp state to be abnormal in turning off the light supplement lamp.
Optionally, fig. 6 is a flowchart of another lamp dimming method according to an embodiment of the present invention, and referring to fig. 6, the lamp dimming method includes:
and S610, starting.
And S620, initializing parameters.
And S630, the main control module judges the current light modulation mode.
If the current dimming mode is the 0-10V dimming mode, step S640 is performed;
otherwise, if the current dimming mode is the PWM dimming mode, step S650 is performed;
otherwise, if the current dimming mode is the RS485 dimming mode, the CSA dimming mode, or the WiFi dimming mode, the process goes to step S660.
And S640, collecting an external 0-10V voltage dimming signal.
The main control module collects an external 0-10V voltage dimming signal through the built-in AD sampling module.
S641, sampling voltage and current of each lamp strip.
And S642, judging whether the current dimming signal with the voltage of 0-10V is greater than or equal to the lamp-on voltage.
If the current dimming signal of 0-10V is greater than or equal to the lamp-on voltage, go to step S643;
if the current dimming signal of 0-10V is less than the on-lamp voltage, the process proceeds to step S646.
And S643, judging the number of the light bars through the high and low levels of the I/O port or the voltage and the current of the light bars.
If the main control module judges that the number of the current light bars is zero, the step S644 is executed;
if the main control module determines that the current number of the light bars is not zero, step S645 is performed.
S644, the main control module sends 10% dimming signals to the power module and records the state of the light bar.
And S645, the main control module sends corresponding dimming signals to the power supply module according to the dimming values of the dimming signals of the voltage of 0-10V and the number of the light bars and records the current state of the light bars.
And S646, judging whether the current dimming signal with the voltage of 0-10V is less than or equal to the lamp-off voltage.
If the main control module judges that the current voltage dimming signal is less than or equal to the lamp-turning-off voltage, the step S647 is carried out;
otherwise, the process advances to step S648.
And S647, the main control module sends a closing signal to the power module and records the current state of the light bar.
S648, the main control module inquires whether the last state is the light-on state.
And the main control module judges whether the last dimming state is a light-on state or not according to the stored historical dimming records.
If the last state is the light-on state, step S644 is executed, and the main control module sends a dimming signal of 10% to the power module and records the state of the light bar.
And if the last state is the light-off state, executing step S647, and the main control module sends a turn-off signal to the power module and records the current state of the light bar.
And S649, analyzing the sampling data and reporting.
And S650, collecting an external PWM dimming signal.
The main control module collects external PWM dimming signals through the built-in CCP collection module.
And S651 sampling voltage and current of each lamp strip.
And S652, judging whether the current PWM dimming signal is larger than or equal to the lamp-on PWM value or not.
If the current PWM dimming signal is greater than or equal to the lamp-on PWM value, step S653 is performed;
if the current PWM dimming signal is smaller than the lamp-on PWM value, the process proceeds to step S656.
And S653, judging the number of the light bars through the high and low levels of the I/O port or the voltage and the current of the light bars.
If the main control module judges that the number of the current light bars is zero, the step S654 is carried out;
if the main control module determines that the current number of the light bars is not zero, step S655 is performed.
S654, the main control module sends 10% dimming signals to the power module and records the state of the light bar.
And S655, the main control module sends corresponding dimming signals to the power supply module according to the dimming value of the PWM dimming signals and the number of the light bars and records the current state of the light bars.
And S656, judging whether the current PWM dimming signal is less than or equal to the lamp-off PWM value.
If the main control module judges that the current PWM dimming signal is less than or equal to the lamp-turning-off PWM value, the step S657 is carried out;
otherwise, the process advances to step S658.
S657, the main control module sends a closing signal to the power module and records the current state of the light bar.
S658, the main control module inquires whether the last status is light on.
And the main control module judges whether the last dimming state is a light-on state or not according to the stored historical dimming records.
If the last state is the light-on state, step S654 is executed, and the main control module sends a dimming signal of 10% to the power module and records the state of the light bar.
If the last state is the light-off state, step S657 is executed, and the main control module sends a turn-off signal to the power module and records the current state of the light bar.
And S659, analyzing the sampling data and reporting.
And S660, waiting for the dimming signal to update.
S661, sampling voltage and current of each lamp strip.
S662 judges whether the current dimming value is zero.
If the current dimming value is zero, then step S663 is performed;
if the current dimming value is not zero, the process proceeds to step S664.
S663, the main control module sends a closing signal to the power module and records the current state of the light bar.
S664, judging the number of the light bars through the high and low levels of the I/O port or the voltage and the current of the light bars.
If the main control module judges that the number of the current light bars is zero, the step S665 is executed;
if the main control module determines that the current number of the light bars is not zero, step S666 is performed.
S665, the main control module sends 10% of dimming signals to the power module and records the state of the light bar.
And S666, the main control module sends corresponding dimming signals to the power supply module according to the dimming value of the PWM dimming signals and the number of the light bars and records the current state of the light bars.
And S667, analyzing the sampled data and reporting.
It is to be noted that the foregoing is only illustrative of the preferred embodiments of the present invention and the technical principles employed. It will be understood by those skilled in the art that the present invention is not limited to the particular embodiments illustrated herein, but is capable of various obvious changes, rearrangements and substitutions as will now become apparent to those skilled in the art without departing from the scope of the invention. Therefore, although the present invention has been described in greater detail by the above embodiments, the present invention is not limited to the above embodiments, and may include other equivalent embodiments without departing from the spirit of the present invention, and the scope of the present invention is determined by the scope of the appended claims.
Claims (10)
1. A light fixture protection circuit, comprising:
the detection module is connected with a lamp holder of a lamp and used for detecting a current signal and a voltage signal of the lamp holder;
the main control module is connected with the detection module and used for determining first required power according to the current signal and the voltage signal;
the CSA communication module is respectively connected with the power supply module of the lamp and the main control module and is used for sending the first required power to the power supply module of the lamp;
the lamp protection circuit further comprises a lamp dimming method, wherein the lamp dimming method comprises the following steps:
a detection module of a lamp protection circuit in a lamp detects a lamp holder in the lamp to generate a detection signal;
the main control module determines the required power according to the detection signal;
the main control module adjusts the output power of a power supply module in the lamp according to the required power;
if the dimming equipment of the lamp detects a dimming trigger signal, the dimming equipment converts the dimming trigger signal into a dimming signal, wherein the dimming signal comprises an analog dimming signal and/or a digital dimming signal;
correspondingly, the determining, by the master control module, the required power according to the detection signal includes:
the main control module determines required power according to the detection signal and the dimming signal;
if the dimming signal is an analog dimming signal, the main control module determines the required power according to the detection signal and the dimming signal, and the method comprises the following steps:
the main control module compares the dimming signal with a preset light-off signal threshold value and a preset light-on signal threshold value;
if the dimming signal is greater than or equal to the light-on signal threshold, the main control module determines the number of light supplement lamps connected with the lamp holder according to the detection signal or an output signal of a preset port in the main control module; when the main control module determines that the number of the light supplement lamps is zero, the main control module determines required power according to a preset value; or when the main control module determines that the number of the light supplement lamps is not zero, the main control module determines the current load power according to the number of the light supplement lamps and the power of each light supplement lamp, and determines the required power according to the load power and the dimming signal;
if the dimming signal is smaller than the light-on signal threshold and smaller than or equal to the light-off signal threshold, the main control module determines that the required power is zero to control the power supply module to stop power output;
and if the dimming signal is smaller than the light-on signal threshold and larger than the light-off signal threshold, the main control module determines the required power according to the last dimming signal.
2. The lamp protection circuit of claim 1, further comprising a dimming module connected to the main control module, the dimming module configured to receive a dimming signal and send the dimming signal to the main control module;
the main control module is further configured to determine a second required power according to the dimming signal, and send the second required power to the power module of the lamp through the CSA communication module.
3. The lamp protection circuit of claim 2, wherein the dimming module comprises a 0-10V dimming sub-module and/or an RS485 dimming sub-module;
the 0-10V dimming submodule is used for outputting an analog dimming signal to the main control module;
and the RS485 dimming submodule is used for outputting a digital dimming signal to the main control module.
4. The lamp protection circuit of claim 2, wherein said dimming module comprises a signal amplifier;
when the dimming module is connected with other dimming modules in series, the signal amplifier is used for relaying and amplifying the dimming signal input by the previous dimming module and outputting the dimming signal to the next dimming module.
5. A luminaire comprising a power supply module, a lamp holder, and at least one luminaire protection circuit as claimed in any one of claims 1 to 4;
the power supply module is used for supplying power to each light supplement lamp;
the lamp holder is used for connecting and fixing the light supplementing lamp.
6. The lamp of claim 5, further comprising a dimming device connected to the dimming module in the lamp protection circuit, the dimming device configured to detect the dimming trigger signal and send the dimming signal to the dimming module based on the dimming trigger signal.
7. Luminaire as claimed in claim 6, characterized in that the dimming device comprises at least a WiFi control module and/or a dimming controller;
the WiFi control module is used for being in communication connection with terminal equipment so as to respond that the terminal equipment remotely sends the dimming signal to the dimming module;
the dimming controller is used for sending the dimming signal to the dimming module in a close distance.
8. The luminaire of claim 5, wherein if the dimming signal is a digital dimming signal, the determining, by the main control module, a required power according to the number of the fill-in lamps, the detection signal, and the dimming signal comprises:
if the dimming signal is not zero, the main control module determines the number of the light supplement lamps connected with the lamp holder according to the detection signal or an output signal of a preset port in the main control module; when the main control module determines that the number of the light supplement lamps is zero, the main control module determines required power according to a preset value; or when the main control module determines that the number of the light supplement lamps is not zero, the main control module determines the current load power according to the number of the light supplement lamps and the power of each light supplement lamp, and determines the required power according to the load power and the dimming signal;
and if the dimming signal is zero, the main control module determines that the required power is zero so as to control the power supply module to stop outputting.
9. The luminaire of claim 5, wherein the main control module determines the required power according to the last dimming signal, comprising:
if the last dimming signal is a light-on signal, the main control module determines the required power according to a preset value;
and if the last dimming signal is a light-off signal, the main control module determines that the required power is zero so as to control the power supply module to stop power output.
10. The luminaire of claim 5, after the main control module determines the required power according to the detection signal, further comprising:
the main control module determines a current state corresponding to the light supplementing lamps according to the dimming signal, the relationship between the current detection value of each light supplementing lamp in the detection signal and a preset current alarm threshold value, and the relationship between the voltage detection value of each light supplementing lamp in the detection signal and a preset voltage alarm threshold value, and sends the current state to monitoring equipment.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010323244.9A CN111447711B (en) | 2020-04-22 | 2020-04-22 | Lamp protection circuit, lamp and lamp dimming method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010323244.9A CN111447711B (en) | 2020-04-22 | 2020-04-22 | Lamp protection circuit, lamp and lamp dimming method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111447711A CN111447711A (en) | 2020-07-24 |
| CN111447711B true CN111447711B (en) | 2022-04-29 |
Family
ID=71654357
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010323244.9A Active CN111447711B (en) | 2020-04-22 | 2020-04-22 | Lamp protection circuit, lamp and lamp dimming method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111447711B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113163542B (en) * | 2021-03-03 | 2023-03-24 | 深圳拓邦股份有限公司 | Induction splicing lamp |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103987162A (en) * | 2014-05-08 | 2014-08-13 | 深圳市智华照明科技有限公司 | Load self-adaptation LED power supply |
| DE102013109866A1 (en) * | 2013-09-10 | 2015-03-12 | EBEG Elektra Bahn Elektronik GmbH & Co. KG | Device and method for controlling and fixing the brightness of a plurality of light-emitting diodes (LED) or LED modules |
| CN105981478A (en) * | 2013-09-20 | 2016-09-28 | 飞利浦灯具控股公司 | Power splitter for a variable number of loads and power splitting method |
| US10560993B1 (en) * | 2018-03-08 | 2020-02-11 | Universal Lighting Technologies, Inc. | Dimming controller for LED driver and method of indirect power estimation |
| CN111010786A (en) * | 2020-01-19 | 2020-04-14 | 芬尼克斯照明（厦门）有限公司 | Dimming method, dimmer, dimming emergency inverter and emergency lighting system |
| CN211702488U (en) * | 2020-04-22 | 2020-10-16 | 苏州纽克斯电源技术股份有限公司 | Lamp protection circuit and lamp |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2005025271A1 (en) * | 2003-09-03 | 2005-03-17 | Sharp Kabushiki Kaisha | Power control method, power control device, and fixing device |
| TWM359894U (en) * | 2008-12-31 | 2009-06-21 | Netvox Technology Co Ltd | A device to adjust the brightness with feedback function |
| CN104507246A (en) * | 2015-01-15 | 2015-04-08 | 天津市中环三峰电子有限公司 | Automatic power adjusting type ultraviolet lamp control circuit |
-
2020
- 2020-04-22 CN CN202010323244.9A patent/CN111447711B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102013109866A1 (en) * | 2013-09-10 | 2015-03-12 | EBEG Elektra Bahn Elektronik GmbH & Co. KG | Device and method for controlling and fixing the brightness of a plurality of light-emitting diodes (LED) or LED modules |
| CN105981478A (en) * | 2013-09-20 | 2016-09-28 | 飞利浦灯具控股公司 | Power splitter for a variable number of loads and power splitting method |
| CN103987162A (en) * | 2014-05-08 | 2014-08-13 | 深圳市智华照明科技有限公司 | Load self-adaptation LED power supply |
| US10560993B1 (en) * | 2018-03-08 | 2020-02-11 | Universal Lighting Technologies, Inc. | Dimming controller for LED driver and method of indirect power estimation |
| CN111010786A (en) * | 2020-01-19 | 2020-04-14 | 芬尼克斯照明（厦门）有限公司 | Dimming method, dimmer, dimming emergency inverter and emergency lighting system |
| CN211702488U (en) * | 2020-04-22 | 2020-10-16 | 苏州纽克斯电源技术股份有限公司 | Lamp protection circuit and lamp |
Non-Patent Citations (2)
| Title |
|---|
| Dimming Characteristics of Large-scale High-Intensity-Discharge (HID) Lamp Lighting Networks using a Central Energy-Saving System;Wei Yan;《 Conference Record of the 2006 IEEE Industry Applications Conference Forty-First IAS Annual Meeting》;20061012;全文 * |
| LED照明调光技术的研究与分析;王梦霞;《中国照明电器 》;20190530(第5(2019)期);全文 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN111447711A (en) | 2020-07-24 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US8110996B2 (en) | Modular wireless lighting control system using a common ballast control interface | |
| CN104823525B (en) | The control based on signal level of electric power network load system | |
| CN101675709A (en) | Lighting device with the LED that is used to detect | |
| CN101309545B (en) | Light modulating energy-saving lamp suitable for one-touch control | |
| CN111447711B (en) | Lamp protection circuit, lamp and lamp dimming method | |
| DK2482621T3 (en) | Lamp and method of controlling this | |
| CN211702488U (en) | Lamp protection circuit and lamp | |
| CN102934155B (en) | Illuminative for sign method | |
| CN102448210A (en) | Power supply system for centralized control of LED (light emitting diode) street lamps | |
| CN103220861B (en) | Bi-wire lamp control system based on energy storage method | |
| CN110784971A (en) | Lamp control system adopting alternating current chopping to transmit data | |
| CN101500355B (en) | Single lamp energy saving controller for road lamp and control method | |
| CN102612234B (en) | Dimming module for tunnel LED (light-emitting diode) lamps | |
| CN103987162B (en) | A kind of loaded self-adaptive LED power | |
| CN102427639A (en) | Light modulation system of LED street lamp with direct current high voltage power supply and signal transmission and reception method thereof | |
| CN109526116A (en) | Wisdom illumination monitoring terminal, system and corresponding monitoring method | |
| CN211502539U (en) | Campus street lamp based on block chain | |
| CN201374864Y (en) | Electronic ballast with switching-type light adjusting framework | |
| CN212970185U (en) | Intelligent dimming system based on power line carrier communication | |
| CN213818297U (en) | Lighting control system based on NB-IOT narrowband thing allies oneself with technique | |
| CN201216041Y (en) | Light modulating energy-saving lamp suitable for one-touch control | |
| CN219592662U (en) | System for simultaneously supporting PUSH dimming and DALI dimming | |
| CN219514267U (en) | Lamp control module and lighting system comprising same | |
| CN220653579U (en) | Lamp controller, system and positioning system | |
| CN210143136U (en) | High power factor LED linear constant current control circuit |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |