CN107846751B - Lighting device with signal editing function, lighting system and electronic device - Google Patents
Lighting device with signal editing function, lighting system and electronic device Download PDFInfo
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- CN107846751B CN107846751B CN201711148751.8A CN201711148751A CN107846751B CN 107846751 B CN107846751 B CN 107846751B CN 201711148751 A CN201711148751 A CN 201711148751A CN 107846751 B CN107846751 B CN 107846751B
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- 230000000737 periodic effect Effects 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 20
- 230000003287 optical effect Effects 0.000 description 6
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- 230000006854 communication Effects 0.000 description 4
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Classifications
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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
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
- H04B10/11—Arrangements specific to free-space transmission, i.e. transmission through air or vacuum
- H04B10/114—Indoor or close-range type systems
- H04B10/1143—Bidirectional transmission
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
- H04B10/11—Arrangements specific to free-space transmission, i.e. transmission through air or vacuum
- H04B10/114—Indoor or close-range type systems
- H04B10/116—Visible light communication
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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
- H05B47/00—Circuit arrangements for operating light sources in general, i.e. where the type of light source is not relevant
- H05B47/10—Controlling the light source
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- 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
- Y02B20/40—Control techniques providing energy savings, e.g. smart controller or presence detection
Abstract
The invention provides a lighting device with a signal editing function, a lighting system and an electronic device. The main control unit presets codes corresponding to frequencies in at least two frequency keeping time periods, combines the codes according to preset rules, and sends the combined coded signals to the multi-frequency output unit; the multi-frequency output unit receives the coded signals sent by the main control unit and outputs corresponding frequency modulation signals according to the coded signals; the driving power supply outputs an electric signal with corresponding frequency according to the modulation signal output by the multi-frequency output unit, and loads the electric signal to the light-emitting unit to drive the light-emitting unit; the light emitting unit adjusts the light emitting frequency of the light emitting unit according to the driving power supply electric signal, and emits light signals according to the adjusted light emitting frequency. The driving power supply is controlled to output periodic signals with different frequencies according to a modulation scheme, so that the light-emitting unit emits edited light signals.
Description
Technical Field
The present invention relates to the field of lighting technologies, and in particular, to a lighting device with a signal editing function, a lighting system, and an electronic device.
Background
Along with the development of lighting technology, lighting equipment does not only aim at lighting, and at the present stage, the lighting industry is greatly changed, and the popularization of the visible light communication technology brings new opportunities for the lighting equipment, so that the lighting equipment can play a larger role, and higher added value is created.
In the prior art, the lighting equipment can transmit information through the optical signal, but when the lighting equipment with the visible light communication function at present transmits information through the optical signal, the problems of flickering, color change and the like which can be perceived by human eyes often occur, so that the light quality of the lighting equipment is seriously affected, and the lighting requirement of a user cannot be met. In addition, the optical signal emitted by the lighting device is unstable, so that the error rate of information transmitted by the optical signal is high, and great inconvenience is brought to a user.
Therefore, there are many problems in the current visible light communication process that need to be solved.
Disclosure of Invention
The present invention has been made in view of the above problems, and has an object to provide a lighting device with a signal editing function, a lighting system, and an electronic device, which overcome or at least partially solve the above problems.
According to one aspect of the present invention, there is provided a lighting apparatus with a signal editing function, comprising a main control unit, a multi-frequency output unit, a driving power supply and a light emitting unit connected in sequence,
the main control unit presets codes corresponding to frequencies in at least two frequency keeping time periods, combines the codes according to preset rules, and sends the combined coded signals to the multi-frequency output unit;
the multi-frequency output unit is configured to receive the coded signal sent by the main control unit and output a modulation signal with corresponding frequency according to the coded signal;
the driving power supply outputs an electric signal with corresponding frequency according to the modulation signal output by the multi-frequency output unit, and loads the electric signal to the light emitting unit to drive the light emitting unit;
the light-emitting unit adjusts the light-emitting frequency of the light-emitting unit according to the electric signal of the driving power supply and emits light signals according to the adjusted light-emitting frequency.
Optionally, the lighting device further comprises:
and one end of the auxiliary power supply is connected with the main control unit, and the other end of the auxiliary power supply is connected with the multi-frequency output unit to provide working electric signals for the main control unit and the multi-frequency output unit.
Optionally, the main control unit combines the codes according to a preset rule, including:
the main control unit combines preset codes through ID codes required by the lighting equipment; and/or
The main control unit sets the continuous cycle number of different phases for each frequency according to the user demand or the use purpose, and combines the continuous cycle number of different phases of each frequency to combine preset codes.
Optionally, the multi-frequency output unit includes a first resistor component, a second resistor component, a first capacitor component, a second capacitor component, a switch component and a clock oscillator, where the first resistor component and the second resistor component are sequentially connected, and the switch component is disposed between the first capacitor component and the second capacitor component;
when the switch component is disconnected, the input voltage of the multi-frequency output unit is bridged at two ends of the first capacitor component through the first resistor component and the second resistor component to charge the first capacitor component, and the first capacitor component is discharged through the second resistor component;
when the switch components are communicated, the input voltage of the multi-frequency output unit is bridged at two ends of the first capacitor component and the second capacitor component through the first resistor component and the second resistor component to charge the first capacitor component and the second capacitor component, and the first capacitor component and the second capacitor component are discharged through the second resistor component,
the multi-frequency output unit is further configured to:
the values of the first resistance component, the second resistance component, the first capacitance component and the second capacitance component of the multi-frequency output unit are adjusted according to the coding signals sent by the main control unit, and the holding time of the high/low level output by the clock oscillator of the multi-frequency output unit is further adjusted;
controlling an oscillation period of the clock oscillator according to a hold time of the clock oscillator output high/low level;
and outputting a modulation signal with a corresponding frequency according to the oscillation period of the clock oscillator.
Optionally, the multi-frequency output unit is further configured to adjust a hold time of the clock oscillator outputting a high/low level and an oscillation period of the clock oscillator in the following manner:
T1＝(R1+R2)Cln2；
T2＝R2Cln2；
T3＝(R1+2R2)Cln2；
wherein, T1 is the high-level holding time output by the clock oscillator, T2 is the low-level holding time output by the clock oscillator, T3 is the oscillation period of the clock oscillator, R1 and R2 are the corresponding resistance values of the first resistance element and the second resistance element in the multi-frequency output unit in the charge-discharge loop, and C is the capacitance value of the charge-discharge loop of the multi-frequency output unit.
Optionally, the multi-frequency output unit is further configured to:
controlling the on-off of a switch component in the multi-frequency output unit according to the coding signal of the main control unit;
and controlling the frequency switching of the multi-frequency output unit according to the on-off state of the switching element.
Optionally, the driving power supply is a dimming power supply with PWM modulation and demodulation function.
Optionally, the PWM signal of the driving power supply is adjusted in at least one of the following ways:
the PWM frequency of the driving power supply is more than 200HZ;
the amplitude variation range of the PWM signal of the driving power supply is larger than 5%.
Optionally, the light emitting unit includes:
a light emitting diode LED, an incandescent lamp, a fluorescent lamp, a laser light source, or a combination thereof.
Optionally, the light source of the light emitting unit includes a single-color light source or a multi-path mixed light source.
Optionally, the lighting device further comprises:
and one end of the external unit is connected with the main control unit, the other end of the external unit is connected with the auxiliary power supply, the power supply of the auxiliary power supply is received, local data are collected, and the main control unit combines the collected data to set the output frequency of the encoding combination control multi-frequency output unit.
Optionally, the external unit includes at least one of:
illuminance sensor, presence sensor, dynamic and static sensor.
According to an aspect of the present invention, there is also provided a lighting system with a signal editing function, including the lighting device of any one of the above and a visible light receiving device,
the lighting equipment sends out edited visible light signals according to a set modulation scheme;
the visible light receiving equipment collects the visible light signals and decodes and outputs the visible light signals according to a preset strategy.
Optionally, the visible light receiving device includes at least one of:
photoelectric sensor, cell-phone camera.
According to an aspect of the present invention, there is also provided an electronic apparatus including:
a processor; and
a memory arranged to store computer executable instructions that, when executed, cause the processor to perform the encoding operations of the main control unit in the lighting device of any one of the above.
The lighting equipment with the signal editing function comprises a main control unit, a multi-frequency output unit, a driving power supply and a light-emitting unit which are sequentially connected, wherein the main control unit can preset codes corresponding to frequencies in at least two frequency holding time periods, further combines the codes according to preset rules, and sends the combined coded signals to the multi-frequency output unit. The multi-frequency output unit is configured to receive the coded signal sent by the main control unit and output a modulation signal with a corresponding frequency according to the coded signal. And the driving power supply outputs an electric signal with a corresponding frequency according to the modulation signal output by the multi-frequency output unit, and loads the electric signal to the light emitting unit to drive the light emitting unit. The light-emitting unit adjusts the light-emitting frequency of the light-emitting unit according to the electric signal of the driving power supply and emits light signals according to the adjusted light-emitting frequency. Therefore, the lighting equipment of the invention encodes the frequency by setting a program in the main control unit, controls the frequency output of the multi-frequency output unit and the automatic switching of the frequency, and further drives the light emitting unit by the modulated driving power supply, so that the light emitting unit can emit edited light signals. Therefore, the embodiment of the invention solves the problems of flicker, color change and the like which can be perceived by human eyes caused by the reduction of the light quality caused by modulating the light signal in the prior art by the mode of encoding the frequency. The invention has simple coding mode and high cost performance, and is easy to realize on lighting equipment. In addition, the embodiment of the invention can modularize the topological structure formed by the main control unit and the multi-frequency output unit, and load the modulation signal output by the topological structure onto the light-emitting unit through the driving power supply, thereby directly modifying the existing lighting equipment, and having low cost and easy development and popularization.
The foregoing description is only an overview of the present invention, and is intended to be implemented in accordance with the teachings of the present invention in order that the same may be more clearly understood and to make the same and other objects, features and advantages of the present invention more readily apparent.
The above, as well as additional objectives, advantages, and features of the present invention will become apparent to those skilled in the art from the following detailed description of a specific embodiment of the present invention when read in conjunction with the accompanying drawings.
Drawings
Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The drawings are only for purposes of illustrating the preferred embodiments and are not to be construed as limiting the invention. Also, like reference numerals are used to designate like parts throughout the figures. In the drawings:
FIG. 1 is a block diagram of a lighting device with signal editing functionality according to one embodiment of the invention;
FIG. 2 is another block diagram of a lighting device with signal editing functionality in accordance with one embodiment of the present invention;
fig. 3 is a circuit diagram of the operation of the multi-frequency output unit of the lighting device with the signal editing function according to one embodiment of the present invention;
FIG. 4 is a waveform diagram of input and output signals of a multi-frequency output unit according to one embodiment of the present invention;
FIG. 5 is a schematic diagram of a driving power PWM signal according to one embodiment of the invention;
fig. 6a is a scheme diagram of a lighting device with signal editing function to adjust the brightness of a light emitting unit according to one embodiment of the present invention;
fig. 6b is another scheme of adjusting the brightness of a light emitting unit by a lighting device with a signal editing function according to one embodiment of the present invention;
FIG. 7 is another block diagram of a lighting device with signal editing functionality in accordance with one embodiment of the present invention; and
fig. 8 is a schematic diagram of edited signals output by a light emitting unit of a lighting device with a signal editing function according to an embodiment of the present invention.
Detailed Description
Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art.
In order to solve the technical problems, an embodiment of the invention provides a lighting device with a signal editing function. Fig. 1 is a block diagram of a lighting device with signal editing functionality according to one embodiment of the invention. As shown in fig. 1, the lighting device with the signal editing function includes at least a main control unit 1, a multi-frequency output unit 2, a driving power supply 3, and a light emitting unit 4. In the lighting device according to the embodiment of the present invention, the above-mentioned working units are sequentially connected (the main control unit 1 is connected to one end of the multi-frequency output unit 2, the other end of the multi-frequency output unit 2 is connected to one end of the driving power supply 3, and the other end of the driving power supply 3 is connected to the light emitting unit 4), so as to commonly control the light signal emitted from the lighting device. Wherein, L on the driving power supply represents Live Wire input, and N represents Neutral Wire input. At this time, the driving power source may supply power to the other respective working units of the lighting apparatus of the present embodiment from the auxiliary power source integrated in advance therein.
Further, fig. 2 is another block diagram of the components of the lighting device with signal editing function according to one embodiment of the present invention. As shown in fig. 2, the lighting device of the present embodiment may further include an independent auxiliary power source 5, one end of which is connected to the main control unit, and the other end of which is connected to the multi-frequency output unit, and the auxiliary power source provides power to the main control unit and the multi-frequency output unit to ensure the normal operation of the corresponding components. At this time, the driving power supply can not supply power to the main control unit and the multi-frequency output unit.
In addition, in the embodiment of the present invention, when each working unit is powered by a corresponding power source (a driving power source or an additional independent auxiliary power source) and is in a normal working state, the main control unit may also be connected to the multi-frequency output unit, and a corresponding control program is preset in the main control unit according to a user requirement to control the output and switching of different frequencies of the multi-frequency output unit. Specifically, the embodiment of the invention can preset codes corresponding to frequencies in various frequency keeping time periods through the main control unit, further combine the codes according to preset rules, and send the combined coded signals to the multi-frequency output unit. The output frequency value of the multi-frequency output unit is controlled by a built-in program of the main control unit. In an embodiment of the present invention, the frequency holding time period may include a plurality of unit periods corresponding to frequencies.
Further, the multi-frequency output unit may output a modulated signal corresponding to the frequency value according to the received encoded signal. In the embodiment of the invention, the multi-frequency output unit can be connected with the driving power supply, and the driving power supply can be connected with the light-emitting unit, so that the driving power supply can output an electric signal with corresponding frequency according to the received modulation signal output by the multi-frequency output unit and load the electric signal on the light-emitting unit to drive the light-emitting unit. The light emitting unit adjusts the light emitting frequency according to the electric signal of the driving power supply and emits light signals according to the adjusted light emitting frequency.
In the embodiment of the invention, the main control unit and the multi-frequency output unit can form a topological structure together. In this topology, the main control unit controls the output and switching of the frequencies of the multi-frequency output unit by a built-in program. Specifically, the main control unit may set the code combination according to the ID code configured by the lighting device itself, and may customize the code combination according to the user's requirement or use purpose. For example, the number of continuous periods of different phases may be set for each frequency according to the user's requirement, and the codes may be combined by further combining the number of continuous periods of different phases of each frequency. In addition, when the codes are combined, the codes may be operated according to other possible manners, which is not particularly limited in this embodiment.
In this embodiment, the multi-frequency output unit may adjust the values of its own resistor component and capacitor component according to the encoded signal sent by the main control unit, and further adjust the retention time of the high/low level output by the clock oscillator of the multi-frequency output unit. In the embodiment of the invention, the oscillation period of the clock oscillator can be controlled according to the high/low level holding time of the output of the clock oscillator, and the modulation signal with corresponding frequency can be further output according to the oscillation period of the clock oscillator.
In particular, fig. 3 is a circuit diagram of the operation of the multi-frequency output unit of the lighting device with the signal editing function according to one embodiment of the present invention. As shown in fig. 3, the multi-frequency output unit includes a clock oscillator U1, a first resistor component R1, a second resistor component R2, a first capacitor component C1, a second capacitor component C2, a third capacitor component C3, and a switch component S. In addition, in FIG. 3, V CC Representing the supply voltage, V O Representing the output voltage of the multi-frequency output unit. In the present embodiment, V CC The power supply voltage provided by an independent auxiliary power supply in the system can be directly connected to the system as an input voltage, and the power supply voltage provided by the auxiliary power supply integrated in advance in the driving power supply can also be connected to the system as an input voltage.
In fig. 3, the first resistor component R1 and the second resistor component R2 are sequentially connected, and the on-off state of the switch component S can be controlled according to the internal program of the main control unit, and further, the frequency switching of the multi-frequency output unit is controlled according to the on-off state of the switch component S. Specifically, when the switch component S is controlled to be in an on state by an internal program of the main control unit, the input voltage of the multi-frequency output unit may be connected across the two ends of the first capacitor component C1 through the first resistor component R1 and the second resistor component R2, so as to charge the first capacitor component C1. At this time, the capacitance C in the charging circuit is C1 (the capacitance value of the first capacitance element C1). Voltage V across first capacitor component C1 C Starting from 0V to V CC Rise to 2/3V CC At the time, the output voltage V of the multi-frequency output unit O The default high level is flipped to the low level. At this time, the pin 7 of the clock oscillator is turned on, and the first capacitor element C1 is discharged through the resistor element R2 and the pin 7 of the clock oscillator. During discharging, when the voltage V across the first capacitor component C1 C From 2/3V CC Down to 1/3V CC At the time, the output voltage V of the multi-frequency output unit O The low level is inverted to the high level. At the same time, the pin 7 of the clock oscillator is turned off, and the first capacitor component C1 reenters the charging process and circulates the charging and discharging processes.
In addition, in the embodiment of the present invention, the switch component S in the multi-frequency output unit may also be controlled to be in a closed state according to an internal program of the main control unit. When the switch component S is in the closed state, the second capacitor component C2 is added to the circuit, and at this time, the capacitance C in the charge and discharge circuit is c1+c2 (the sum of the capacitance values of the first capacitor component C1 and the second capacitor component C2). The input voltage of the multi-frequency output unit can be connected across the two ends of the first capacitor component C1 and the second capacitor component C2 through the first resistor component R1 and the second resistor component R2 to charge the first capacitor component C1 and the second capacitor component C2. After the charging is completed, the first capacitor component C1 and the second capacitor component C2 can also discharge through the second resistor component R2 and the pin 7 of the clock oscillator. Therefore, the embodiment of the invention can change the on-off state of the switch component S through the main control unit, so as to change the capacity of the capacitor in the charge-discharge loop, further form different charge-discharge time, and further control the multi-frequency output unit to generate different output frequencies.
Specifically, in the embodiment of the present invention, the multi-frequency output unit may adjust the hold time of the clock oscillator outputting the high/low level and the oscillation period of the clock oscillator in the following manner: the clock oscillator outputs a high level hold time T1: t1= (r1+r2) Cln2; the clock oscillator outputs a low level hold time T2: t2=r2cln2; oscillation period T3 of the clock oscillator: t3= (r1+2r2) Cln2. Wherein R1 and R2 are respectively corresponding resistance values of a first resistance element and a second resistance element in the multi-frequency output unit in the charge-discharge loop, and C is a capacitance value of the charge-discharge loop of the multi-frequency output unit.
In an embodiment of the present invention, fig. 4 is a waveform diagram of input and output signals of a multi-frequency output unit according to an embodiment of the present invention. As shown in fig. 4, V CC The corresponding waveform diagram represents a multi-frequency output listWaveform diagram of input signal of element V O The corresponding waveform diagram represents a modulated signal waveform diagram which is output after the multi-frequency output unit modulates the signal frequency through the main control unit. In fig. 4, as can be seen from the waveform chart of the output signal of the multi-frequency output unit, the clock oscillator of the present embodiment outputs a high level holding time T1 as T1, outputs a low level holding time T2 as T2, and the oscillation period T3 of the clock oscillator is T, that is, t1+t2.
In this embodiment, after outputting the modulation signal, the multi-frequency output unit may load the modulation signal onto the driving power source, and the driving power source outputs an electrical signal with a corresponding frequency according to the modulation signal. In addition, the driving power supply of the embodiment is externally connected with a commercial power or a battery power supply system, and the output current and the voltage of the driving power supply can be adjusted according to the requirements of the light-emitting unit. In addition, the driving power supply of the embodiment is a dimming power supply with a PWM modulation and demodulation function, and the output signal of the driving power supply can be adjusted according to the PWM frequency and the corresponding duty ratio. Generally, the PWM frequency of the driving power supply is greater than 200HZ, and the corresponding duty cycle (a/t) can vary between 0% and 100%.
In addition, the amplitude of the PWM signal can be appropriately adjusted. Fig. 5 is a schematic diagram of a driving power PWM signal according to one embodiment of the present invention. As shown in FIG. 5, I represents the amplitude of the PWM signal, T represents time, I 1 Representing the highest value of the amplitude of the PWM signal, I 0 Represents the minimum value of the amplitude of the PWM signal, and a represents the maximum value I of the amplitude of the PWM signal 1 B represents the duration of the PWM signal amplitude at the minimum value I 0 Is not shown, is not shown. In the embodiment of the present invention, in order to accurately detect the corresponding signal, the amplitude variation range (I 1 /I 0 ) Is limited to 5% or more. In this embodiment, the amplitude of the PWM signal is taken to be a maximum of 100%.
In the embodiment of the present invention, the light emitting unit is a light source having a light emitting function, and specifically may be a light source of a type such as a light emitting diode LED, a fluorescent lamp, or an incandescent lamp. In addition, the light emitting unit of the present embodiment may be a single-path monochromatic light source, such as a white LED light source, or may be a multi-path hybrid light source, such as a white and color hybrid light source, where the light emitting energy of the light emitting unit is provided by a driving power source.
In a preferred embodiment, the lighting device with signal editing function also has a function of adjusting the brightness of the light emitting unit. In particular, fig. 6a and 6b are scheme diagrams of adjusting the brightness of a light emitting unit of a lighting device with a signal editing function according to one embodiment of the present invention. As shown in fig. 6a, ref1 is an input voltage input to the multi-frequency output unit, and in this embodiment, the current input to the light emitting unit may be changed by changing the value of Ref1, so as to achieve the purpose of changing the light emitting brightness of the light emitting unit. Specifically, as in fig. 6b, the current input to the light emitting diode D31 may be changed by changing the value of Ref1, thereby controlling the light emitting luminance of the light emitting diode D31.
After receiving the driving electric signal of the driving power supply, the light emitting unit of the embodiment can adjust the light emitting frequency of the light emitting unit according to the electric signal of the driving power supply, and enable the light emitting unit to emit light signals according to the adjusted light emitting frequency. When the luminous frequencies are different, the signal states of the luminous signals are different, and the luminous signals sent by the luminous units can pass through the corresponding decoding mechanism to further acquire the corresponding information carried by the luminous units, so that the purpose of information transmission on the lighting equipment is realized.
As can be seen from the above, the multi-frequency output unit of the present embodiment has the functions of frequency switching and frequency signal output, and when signals with different frequency values are output to the driving power source, the driving power source loads the electrical signals onto the light emitting unit according to the corresponding frequency values, so as to realize the modulation of the optical signals of the light emitting unit. The output frequency of the multi-frequency output unit is controlled by the main control unit, the main control unit assigns values to the multi-frequency output unit according to the corresponding frequency coding combination to control various frequency outputs of the multi-frequency output unit, different output frequencies correspond to different signal states, and finally, the switching of different frequencies is realized to achieve the generation and transmission of signals.
In addition, in an alternative embodiment, the lighting device with the signal editing function can further add other external units on the main control unit side so as to enrich the functions of the lighting device. Fig. 7 is another block diagram of a lighting device with signal editing functionality according to one embodiment of the invention. As shown in fig. 7, one end of the external unit 6 is connected with the main control unit, the other end is connected with the auxiliary power supply, the main control unit receives the power supply of the auxiliary power supply and collects the local data of the auxiliary power supply, sets the coding combination by combining the collected data, and then controls the output frequency of the multi-frequency output unit, so that the lighting equipment can automatically adjust the light by combining the environmental data collected by the external unit. In this embodiment, the external unit may be an illuminance sensor, a presence sensor, a dynamic and static sensor, or the like. For example, when the external unit can be an illuminance sensor, the embodiment of the invention can realize the purpose of automatically adjusting the light brightness according to the environment brightness through the illuminance sensor.
The embodiment of the invention further provides a lighting system with the signal editing function, and the lighting system consists of the lighting equipment with the signal editing function and the visible light receiving equipment. In the lighting system, the lighting device cooperates through its main control unit, multi-frequency output unit, and driving power source, so that the light emitting unit emits edited visible light signals according to a set modulation scheme. The visible light receiving equipment collects the visible light signals, and decodes and outputs the visible light signals according to a preset strategy. In this embodiment, when the visible light receiving apparatus decodes the visible light signal according to the preset strategy, the decoded preset strategy needs to be in one-to-one correspondence with the encoded preset rule. For example, when the code combination set by the main control unit is set according to the ID code configured by the lighting device itself, the decoding policy should also be set according to the ID code configured by the lighting device itself, so as to achieve accurate information transfer.
In this embodiment, the visible light receiving device may be a photoelectric sensor, and when the illumination device emits the edited visible light signal, the signal is received by the photoelectric sensor and decoded according to a set rule. In the embodiment, the signal is edited in a mode of encoding the frequency, and corresponding information is further obtained in the visible light receiving device through decoding operation, so that visible light communication is realized. In addition, the visible light receiving device can also be a mobile phone camera, the mobile phone camera reads the visible light signal, and then receives corresponding information at the mobile phone according to the read signal, and edits and displays the information.
The lighting device with signal editing function of the present invention will be described in detail with reference to a specific embodiment.
Specifically, in a preferred embodiment, the main control unit and the multi-frequency output unit are powered by an additional independent auxiliary power supply (see fig. 2). After the main control unit and the multi-frequency output unit work normally, the main control unit can preset two different frequencies F1 and F2 according to the user requirement, and the holding time period of each frequency is set to be T f . When the set frequency F1 lasts for one frequency holding time period, the corresponding signal value is encoded as 0; when the frequency F1 lasts for two holding time periods, the corresponding signal value is encoded as 00. When the frequency F2 is set for one frequency holding time period, the corresponding signal value is encoded as 1, when the frequency F2 is set for two holding time periods, the corresponding signal value is encoded as 11, and so on. In the embodiment of the invention, the frequency is kept for a time period T f Can be formed by a plurality of unit periods, and the time interval when two different frequencies F1 and F2 are switched is T x 。
In the embodiment of the invention, after the main control unit presets the codes corresponding to the frequencies in the frequency keeping time period, the codes can be combined according to preset rules or the own needs of users, and the combined coded signals are sent to the multi-frequency output unit. In this embodiment, the frequency F1 is set according to the user requirement, and first for a frequency holding time period, then the frequency F2 for a frequency holding time period, then the frequency F1 for a frequency holding time period, and finally the frequency F2 for a frequency holding time period, thereby obtaining the combined encoded signal 0101. Taking the combined coded signal 0101 as an example, when the multi-frequency output unit receives the coded signal sent by the main control unit, a modulating signal with a corresponding frequency is output according to the received coded signal, and the modulating signal is used for controlling the driving power supply to output an electric signal with the corresponding frequency. And then, the light emitting unit receives the driving of the driving power supply electric signal, adjusts the self light emitting frequency according to the driving power supply electric signal, and emits a light signal according to the adjusted light emitting frequency.
Fig. 8 is a schematic diagram of edited signals output by a light emitting unit of a lighting device with a signal editing function according to an embodiment of the present invention. Referring to fig. 8, an optical signal output from the illumination apparatus is received and parsed by the visible light receiving apparatus. In this example, taking a mobile phone camera as an example, the mobile phone camera reads the visible light signal, analyzes the corresponding coded signal 0101, and the signal is consistent with the coded signal set by the main control unit, and further receives corresponding information at the mobile phone end and links the content, so that the information is displayed in various information types at the mobile phone end, such as text, audio and video, and further accurate information transmission is realized. Of course, the user can set different coding combinations in the main control unit according to the own requirement to control the output of the multi-frequency output unit, so as to control the light signal sent by the light emitting unit to transmit information.
In addition, according to the method of the invention, corresponding numbers can be matched for the lighting equipment at the fixed position, coding is further carried out according to the numbers of the lighting equipment, and position correspondence is carried out according to the coding, so that the indoor positioning function and the like are realized.
The lighting device with the signal editing function of the embodiment can achieve the following beneficial effects:
the lighting equipment of the invention encodes the frequency by setting a program in the main control unit, controls the frequency output of the multi-frequency output unit and the automatic switching of the frequency, and further drives the light-emitting unit by the modulated driving power supply, thus the light-emitting unit can emit edited light signals. Therefore, the embodiment of the invention solves the problems of flicker, color change and the like which can be perceived by human eyes caused by the reduction of the light quality caused by modulating the light signal in the prior art by the mode of encoding the frequency. The invention has simple coding mode and high cost performance, and is easy to realize on lighting equipment. In addition, the embodiment of the invention can modularize the topological structure formed by the main control unit and the multi-frequency output unit, and load the modulation signal output by the topological structure onto the light-emitting unit through the driving power supply, thereby directly modifying the existing lighting equipment, and having low cost and easy development and popularization. Generally, through the system scheme, the driving power supply can be controlled to output different frequency periodic signals according to a certain modulation scheme, and finally the light-emitting unit can emit edited visible light signals which pass through a corresponding decoding mechanism, so that the function of information transmission on the lighting equipment can be realized. The scheme has the advantages of simple scheme, easy realization, high cost performance, strong universality and the like, provides convenience for users, and contributes to the development of lighting equipment.
In the description provided herein, numerous specific details are set forth. However, it is understood that embodiments of the invention may be practiced without these specific details. In some instances, well-known methods, structures and techniques have not been shown in detail in order not to obscure an understanding of this description.
Similarly, it should be appreciated that in the foregoing description of exemplary embodiments of the invention, various features of the invention are sometimes grouped together in a single embodiment, figure, or description thereof for the purpose of streamlining the disclosure and aiding in the understanding of one or more of the various inventive aspects. However, the disclosed method should not be construed as reflecting the intention that: i.e., the claimed invention requires more features than are expressly recited in each claim. Rather, as the following claims reflect, inventive aspects lie in less than all features of a single foregoing disclosed embodiment. Thus, the claims following the detailed description are hereby expressly incorporated into this detailed description, with each claim standing on its own as a separate embodiment of this invention.
Those skilled in the art will appreciate that the modules in the apparatus of the embodiments may be adaptively changed and disposed in one or more apparatuses different from the embodiments. The modules or units or components of the embodiments may be combined into one module or unit or component and, furthermore, they may be divided into a plurality of sub-modules or sub-units or sub-components. Any combination of all features disclosed in this specification (including any accompanying claims, abstract and drawings), and all of the processes or units of any method or apparatus so disclosed, may be used in combination, except insofar as at least some of such features and/or processes or units are mutually exclusive. Each feature disclosed in this specification (including any accompanying claims, abstract and drawings), may be replaced by alternative features serving the same, equivalent or similar purpose, unless expressly stated otherwise.
Furthermore, those skilled in the art will appreciate that while some embodiments described herein include some features but not others included in other embodiments, combinations of features of different embodiments are meant to be within the scope of the invention and form different embodiments. For example, in the claims, any of the claimed embodiments may be used in any combination.
Various component embodiments of the invention may be implemented in hardware, or in software modules running on one or more processors, or in a combination thereof. Those skilled in the art will appreciate that some or all of the functions of some or all of the components in a lighting device with signal editing functions according to embodiments of the present invention may be implemented in practice using a microprocessor or Digital Signal Processor (DSP). The present invention can also be implemented as an apparatus or device program (e.g., a computer program and a computer program product) for performing a portion or all of the methods described herein. Such a program embodying the present invention may be stored on a computer readable medium, or may have the form of one or more signals. Such signals may be downloaded from an internet website, provided on a carrier signal, or provided in any other form.
It should be noted that the above-mentioned embodiments illustrate rather than limit the invention, and that those skilled in the art will be able to design alternative embodiments without departing from the scope of the appended claims. In the claims, any reference signs placed between parentheses shall not be construed as limiting the claim. The word "comprising" does not exclude the presence of elements or steps not listed in a claim. The word "a" or "an" preceding an element does not exclude the presence of a plurality of such elements. The invention may be implemented by means of hardware comprising several distinct elements, and by means of a suitably programmed computer. In the unit claims enumerating several means, several of these means may be embodied by one and the same item of hardware. The use of the words first, second, third, etc. do not denote any order. These words may be interpreted as names.
By now it should be appreciated by those skilled in the art that while a number of exemplary embodiments of the invention have been shown and described herein in detail, many other variations or modifications of the invention consistent with the principles of the invention may be directly ascertained or inferred from the present disclosure without departing from the spirit and scope of the invention. Accordingly, the scope of the present invention should be understood and deemed to cover all such other variations or modifications.
Claims (14)
1. The lighting equipment with signal editing function is characterized by comprising a main control unit, a multi-frequency output unit, a driving power supply and a light-emitting unit which are connected in sequence,
the main control unit presets codes corresponding to frequencies in at least two frequency keeping time periods, combines the codes according to preset rules, and sends the combined coded signals to the multi-frequency output unit;
the multi-frequency output unit is configured to receive the coded signal sent by the main control unit and output a modulation signal with corresponding frequency according to the coded signal;
the driving power supply outputs an electric signal with corresponding frequency according to the modulation signal output by the multi-frequency output unit, and loads the electric signal to the light emitting unit to drive the light emitting unit;
the light-emitting unit adjusts the light-emitting frequency of the light-emitting unit according to the electric signal of the driving power supply and emits light signals according to the adjusted light-emitting frequency; wherein the method comprises the steps of
The multi-frequency output unit comprises a first resistor element, a second resistor element, a first capacitor element, a second capacitor element, a switch element and a clock oscillator, wherein the first resistor element and the second resistor element are sequentially connected, and the switch element is arranged between the first capacitor element and the second capacitor element;
when the switch component is disconnected, the input voltage of the multi-frequency output unit is bridged at two ends of the first capacitor component through the first resistor component and the second resistor component to charge the first capacitor component, and the first capacitor component is discharged through the second resistor component;
when the switch components are communicated, the input voltage of the multi-frequency output unit is bridged at two ends of the first capacitor component and the second capacitor component through the first resistor component and the second resistor component to charge the first capacitor component and the second capacitor component, and the first capacitor component and the second capacitor component are discharged through the second resistor component;
the multi-frequency output unit is further configured to: controlling the on-off of a switch element in the multi-frequency output unit according to the coding signal of the main control unit, and adjusting the capacitance value of a charge-discharge loop of the multi-frequency output unit according to the on-off of the switch element so as to adjust the oscillation period of the clock oscillator and control the frequency switching of the multi-frequency output unit according to the oscillation period of the clock oscillator; and is also provided with
The multi-frequency output unit is further configured to: the oscillation period of the clock oscillator is adjusted as follows: t3= (r1+2r2) Cln2;
wherein T3 is an oscillation period of the clock oscillator, R1 and R2 are resistance values corresponding to the first resistance component and the second resistance component in the multi-frequency output unit in the charge-discharge loop, and C is a capacitance value of the charge-discharge loop of the multi-frequency output unit.
2. A lighting device as recited in claim 1, further comprising:
and one end of the auxiliary power supply is connected with the main control unit, and the other end of the auxiliary power supply is connected with the multi-frequency output unit to provide working electric signals for the main control unit and the multi-frequency output unit.
3. The lighting device of claim 1, wherein the main control unit combines the codes according to a preset rule, comprising:
the main control unit combines preset codes through ID codes required by the lighting equipment; and/or
The main control unit sets the continuous cycle number of different phases for each frequency according to the user demand or the use purpose, and combines the continuous cycle number of different phases of each frequency to combine preset codes.
4. A lighting device as recited in claim 1, wherein the multi-frequency output unit is further configured to:
the values of the first resistance component, the second resistance component, the first capacitance component and the second capacitance component of the multi-frequency output unit are adjusted according to the coding signals sent by the main control unit, and the holding time of the high/low level output by the clock oscillator of the multi-frequency output unit is further adjusted;
controlling an oscillation period of the clock oscillator according to a hold time of the clock oscillator output high/low level;
and outputting a modulation signal with a corresponding frequency according to the oscillation period of the clock oscillator.
5. The lighting device of claim 4, wherein the multi-frequency output unit is further configured to adjust a hold time of the clock oscillator output high/low level as follows:
T1＝(R1+R2)Cln2；
T2＝R2Cln2；
wherein T1 is the high-level holding time output by the clock oscillator, T2 is the low-level holding time output by the clock oscillator, R1 and R2 are the resistance values corresponding to the first resistance element and the second resistance element in the charging and discharging circuit in the multi-frequency output unit respectively, and C is the capacitance value of the charging and discharging circuit of the multi-frequency output unit.
6. A lighting device as recited in claim 1, wherein said drive power source is a dimming power source having PWM modem functionality.
7. A lighting device as recited in claim 6, wherein the PWM signal of the drive power supply is adjusted in at least one of:
the PWM frequency of the driving power supply is larger than 200Hz;
the amplitude variation range of the PWM signal of the driving power supply is larger than 5%.
8. A lighting device as recited in claim 1, wherein the light emitting unit comprises:
a light emitting diode LED, an incandescent lamp, a fluorescent lamp, a laser light source, or a combination thereof.
9. A lighting device as recited in claim 8, wherein the light source of the light emitting unit comprises a single color light source or a plurality of mixed light sources.
10. A lighting device as recited in any one of claims 1-9, further comprising:
and one end of the external unit is connected with the main control unit, the other end of the external unit is connected with an auxiliary power supply, the power supply of the auxiliary power supply is received, local data are collected, and the main control unit combines the collected data to set the output frequency of the encoding combination control multi-frequency output unit.
11. A lighting device as recited in claim 10, wherein said external connection unit comprises at least one of:
illuminance sensor, presence sensor, dynamic and static sensor.
12. A lighting system with signal editing function, comprising the lighting device of any one of claims 1-11 and a visible light receiving device,
the lighting equipment sends out edited visible light signals according to a set modulation scheme;
the visible light receiving equipment collects the visible light signals and decodes and outputs the visible light signals according to a preset strategy.
13. The lighting system of claim 12, wherein the visible light receiving device comprises at least one of:
photoelectric sensor, cell-phone camera.
14. An electronic device, comprising:
a processor; and
a memory arranged to store computer executable instructions which, when executed, cause the processor to perform the encoding operations of the main control unit in the lighting device according to any one of claims 1-11.
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| CN112953596B (en) * | 2021-02-07 | 2022-10-04 | 深圳市美矽微半导体有限公司 | Frequency self-adaption method, system, equipment and storage medium based on power carrier |
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