CN108521701B - Dimming controller and dimming method - Google Patents
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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
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Abstract
The invention discloses a dimming controller and a dimming method, wherein the dimming controller comprises: the device comprises a main control module, a communication module, a driving execution module and a dimming module, wherein the communication module, the driving execution module and the dimming module are all connected with the main control module, and the main control module realizes stable adjustment of light source brightness by controlling the conduction angle of a voltage regulating circuit in the dimming module and utilizing the change of charge and discharge time of an electrolytic capacitor in the voltage regulating circuit. The dimming controller is particularly suitable for dimming control of a light source with output of 0-10V, solves the higher requirement on the universality of the dimming light source, can perform stable dimming, and is superior to other dimming controllers in scene partition control, emergency protection, dimming stability, equipment expansibility, current detection, power capacity and other performance structures.
Description
Technical Field
The invention relates to the technical field of photoelectric control, in particular to a dimming controller and a dimming method.
Background
In the actual use process of the light source in the existing building illumination control system, in order to meet the illuminance and light aesthetic design requirements under different time, environment and atmosphere, the light and shade angle is effectively avoided, the electric energy consumption is reduced, and a dimming function is often required to be added to the light source. The general silicon controlled rectifier dimming controller is narrow in light source application range, for example, dimming control cannot be carried out on a light source with a dimming driver with 0-10V output, such as a large number of light sources including LEDs, T5 tubes and the like, so that higher requirements of people on the dimming effect on the light source universality cannot be met. Taking a light source with a dimming driver with an output of 0-10V as an example, a dimming controller suitable for the light source with the output of 0-10V is often required to be matched during the use process. However, the current 0-10V dimming controllers on the market mainly have the following drawbacks:
1) The performance is not stable enough, if the controller and the lighting equipment are not matched, the lamplight can be extinguished or flash, and the driving circuit of the light source and the light source can be damaged;
2) The protection of the structural design is not high, the bypass protection function is not provided, once the system paralysis occurs, the normal illumination of a controlled area cannot be continuously ensured, sudden illumination accidents cannot be timely processed, and the power-off memory function is not provided;
3) The scene setting is single, the scene partition cannot be set, temporary reasonable change cannot be carried out according to the needs of owners, and the expansibility is poor.
In view of the above, there is a need for improvements in the art.
Disclosure of Invention
The invention aims to provide a dimming controller and a dimming method, wherein the dimming controller is particularly suitable for dimming control of a light source with output of 0-10V, solves the higher requirements of people on the universality of the dimming light source, can perform stable dimming, and is superior to other similar dimming controllers in scene partition control, emergency protection, dimming stability, equipment expansibility, current detection, power capacity and other performance structures.
In order to solve the above technical problems, the present invention provides a dimming controller, including: the system comprises a main control module, a dimming module, a communication module and a driving execution module, wherein the main control module is respectively connected with the dimming module, the communication module and the driving execution module, and the driving execution module and the dimming module are both connected with a light source through a dimming driver;
The main control module adjusts the output voltage of the dimming module by adjusting the conduction angle of the voltage regulating circuit, so as to adjust the brightness of the light source.
The dimming module further comprises a photoelectric coupler and a load output end, one end of the voltage regulating circuit is connected with the main control module through the photoelectric coupler, and the other end of the voltage regulating circuit is connected with the dimming driver through the load output end to regulate the power supply voltage of the light source;
The voltage regulating circuit includes: electrolytic capacitor, rheostat and triode;
The output end of the photoelectric coupler is connected with one end of the rheostat through a resistor, is connected with the cathode of the electrolytic capacitor through the resistor, and is connected with a 12v power supply through the resistor;
The base electrode of the triode is connected with the other end of the rheostat, the collector electrode of the triode is connected with the positive electrode of the electrolytic capacitor, and the emitter electrode of the triode is connected with the load output end; the emitting electrode of the triode is grounded through a resistor and is connected with a 12v power supply through the resistor;
The resistance value of the electrolytic capacitor changes along with the instruction sent by the main control module, so that the current between the collector electrode and the base electrode of the triode changes; when dimming, the main control module and the photoelectric coupler control the charge and discharge time of the electrolytic capacitor in the voltage regulating circuit, so that the conduction angle of the voltage regulating circuit is continuously changed, and the voltage regulating is carried out by utilizing the charge and discharge time of the voltage regulating circuit, so that the dimming control of the output light source is realized.
When the preset voltage changes, the charging and discharging time of the electrolytic capacitor changes, so that the conduction angle of the triode in the voltage regulating circuit changes, and continuous regulation of the output voltage of the dimming circuit is realized.
As a preferable technical scheme, the driving execution module comprises a driving circuit and a relay group which are connected with each other, wherein the driving circuit is connected with the main control module, and the relay group is connected with the dimming driver. The main control module controls the opening and closing of the relays in the relay group through the driving module, and further controls the power supply of the light source. Specifically, the relay group comprises a plurality of relays, each relay is provided with a bypass switch, the bypass switch is connected with the mains supply through an air switch, and once a line fault occurs in the dimming controller, the bypass switch is closed, a light source power supply line is connected with the mains supply, and normal power supply of the light source is guaranteed.
As a preferred technical scheme, the dimming controller further comprises a feedback module, wherein the feedback module is respectively connected with the main control module and the driving execution module, and is used for detecting and processing internal faults and rear-end load faults of a loop where the feedback module is located in real time and feeding back queried power consumption information to the main control module.
As a preferred technical scheme, the dimming controller further comprises an internal power supply, and the load output end is connected with the internal power supply through a toggle switch.
As an preferable technical scheme, the dimming controller further comprises a dry contact module, wherein the dry contact module is connected with the main control module and is used for performing function expansion on the dimming controller.
As a preferred technical scheme, the dimming controller further comprises a protocol conversion module, wherein the protocol conversion module is connected with the main control module, and is connected with equipment under different protocols to realize the function expansion of the dimming controller.
A dimming method applying the dimming controller comprises the following steps:
Presetting an illumination scene and transmitting illumination scene/brightness scene information to a main control module;
the main control module adjusts the output voltage of the dimming module according to the scene information, so as to adjust the power supply voltage of the dimming controller; the driving circuit is controlled to control the corresponding relay group in the driving execution module to be closed, and the light source is connected to the mains supply;
The light source control end of the dimming driver outputs a control signal to stably adjust the brightness of the light source.
Further, the specific method for the main control module to adjust the output voltage of the dimming module according to the lighting scene is as follows: the main control module controls the charge and discharge time of the electrolytic capacitor in the voltage regulating circuit, so that the conduction angle of the triode in the voltage regulating circuit is changed, and the output voltage of the voltage regulating circuit is controlled.
Compared with the prior art, the invention has the beneficial effects that:
1) According to the invention, the charging and discharging time of the electrolytic capacitor in the voltage regulating circuit is set, so that the conduction angle of the triode in the voltage regulating circuit is correspondingly changed, the setting of the output voltage of the dimming controller is realized, and the continuous change of the output voltage is caused in the charging and discharging process of the electrolytic capacitor, so that the dimming voltage received by one end of the dimming driver is a continuously-changed voltage regulating signal, the continuous and stable regulation of the brightness of the light source is realized, the dimming process is stable, the problems of visual discomfort or dimming flickering caused by voltage abrupt change are avoided, and obviously, the damage to the light source in the dimming process is also reduced;
2) According to the invention, the bypass switch and the feedback module are added on the driving circuit, once the system paralysis occurs, the normal illumination of a controlled area can be continuously ensured, sudden illumination accidents can be processed in real time, the emergency protection of the dimming controller and the continuous power supply of a light source are realized, so that the structural design is strong in protectiveness and high in reliability; in addition, the feedback module can feed back the internal fault of the circuit and the fault condition of the back-end load circuit to the main control module in real time for data storage, and can automatically (support manual) process the fault in real time, so that the feedback module has a fault feedback processing function and a power failure memory function, and provides a basis for analyzing power failure reasons and power consumption data;
3) The user can set the electric field scene at the control terminal according to the requirement, and can call the preset scene through the local control terminal or the mobile control terminal, so that the invention has high flexibility.
Drawings
The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this specification, illustrate embodiments of the application and together with the description serve to explain the application.
FIG. 1 is a connection block diagram of the present invention;
FIG. 2 is a circuit diagram of a dimmer module according to the present invention;
fig. 3 is a flow chart of an implementation of the present invention.
The device comprises a 1-main control module, a 2-driving circuit, a 3-photoelectric coupler, a 4-voltage regulating circuit, a 5-load output end, a 6-relay group, a 7-dimming driver, an 8-light source, a 9-communication module, a 10-dry contact module, an 11-protocol conversion module, a 12-feedback module, a 13-toggle switch, a 14-internal power supply, a 15-air switch, a 16-commercial power and an a-dimming controller.
Detailed Description
The invention will be further described with reference to the drawings and examples.
It should be noted that the following detailed description is illustrative and is intended to provide further explanation of the application. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of exemplary embodiments according to the present application. As used herein, the singular is also intended to include the plural unless the context clearly indicates otherwise, and furthermore, it is to be understood that the terms "comprises" and/or "comprising" when used in this specification are taken to specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof.
Examples
In this embodiment, a dimming controller suitable for a 0-10V output light source is taken as an example, and the technical scheme of the present application is described in detail.
The dimming controller a, as shown in fig. 1, comprises a main control module 1, a dimming module, a driving execution module, a communication module 9, a dry access point module 10 and a protocol conversion module 11, wherein the dimming module, the driving execution module, the communication module 9, the dry access point module 10 and the protocol conversion module 11 are all connected with the main control module 1.
Specifically, the dimming module comprises a photoelectric coupler 3 and a voltage regulating circuit 4 which are connected with each other, the photoelectric coupler 3 is connected with the main control module 1, the voltage regulating circuit 4 is connected with a dimming driver 7 through a load output end 5, a specific circuit diagram is shown in fig. 2, 58-62 ports of the main control module are respectively connected with one path of output, each path of output comprises the photoelectric coupler, the voltage regulating circuit and a load output port, the voltage regulating circuit comprises an electrolytic capacitor and a variable resistor which are connected in parallel, the electrolytic capacitor and the variable resistor are connected with a triode, and when a preset voltage changes, the charging and discharging time of the electrolytic capacitor changes accordingly, so that the conduction angle of the triode in the voltage regulating circuit changes, and continuous adjustment of the output voltage of the dimming circuit is realized.
The driving execution module comprises a driving circuit 2 and a relay group 6 which are connected with each other, the driving circuit 2 is connected with the main control module 1, and the relay group 6 is connected with the power input end of the dimming driver 7. The relay group 6 includes n relays, in general, n >1, each relay is provided with a bypass switch, the bypass switch is connected with the mains supply 16 through an air switch 15, and once a line fault occurs in the dimming controller, the bypass switch corresponding to the fault line can be closed, so as to ensure continuous power supply to the light source 8. Since the load is more in most application scenarios of the present embodiment, the driving circuit 2 adopts a high-current driving circuit/module.
The voltage regulating circuit 4 is internally provided with a precise adjustable resistor, manual dimming can be realized, the voltage regulating circuit 4 is connected with the load output end 5, and each output of the load output end 5 is connected with an external load.
In this embodiment, the communication module 9 is a 485 communication module.
The dimming controller further comprises a feedback module 12, an internal 10V power supply module 14 and a toggle switch 13. The feedback module 12 is preferably a current feedback module, and the current feedback module is connected to each relay in the relay group, so that the current throughput of each line can be detected, and a basis is provided for judging the power consumption, so that the running states of the circuit in the dimming controller and the back-end load circuit can be monitored in real time, once the circuit fault is monitored, the current feedback module feeds back the fault information to the main control module 1, the main control module 1 gives an alarm to an external control terminal, and meanwhile, the relay corresponding to the fault line is cut off. If the internal circuit of the dimming module fails, the bypass switch of the corresponding relay is closed in real time, and normal power supply of the light source corresponding to the failed circuit is ensured. The load output end 5 is connected with the internal power supply 14 through toggle switches 13, specifically, each port of the load output end 5 uniquely corresponds to one toggle switch 13, that is, the number of toggle switches 13 is multiple, and all toggle switches 3 are connected with the internal power supply 14 of 10V.
The load output end 5 is connected with a 0-10V signal control end of a dimming driver 7 corresponding to the external light source 8, so that dimming of the 0-10V output light source is realized.
In addition, the dimming controller also has an emergency control function, and can cope with sudden lighting accidents, and the dimming controller is specific in that: when the internal circuit of the dimming controller fails and the direct mains supply 16 is needed to light the light source 8, the bypass switch on the relay group 6 is firstly adjusted to enable the strong current area to be directly connected with the mains supply 16, and 2 corresponding operation modes are provided for different types of dimming drivers in the 0-10V signal control area: 1. for a dimming driver with default output of 100% brightness when no 0-10V control signal exists, a toggle switch is not required to be operated; 2. for a dimming driver without default setting when no 0-10V control signal is available, the toggle switch 13 needs to be adjusted to enable the built-in 10V power supply to be connected to the circuit, so that the 0-10V control signal is output.
In this embodiment:
the main control module 1 adopts an MCU main control module, and comprises a programmable logic controller and a memory storage chip.
The air switch 15 is of the type C6A, but may be a 10A, 16A or 20A circuit breaker, and the application is not limited thereto.
The control terminal is an upper computer, and can be a scene control panel, a clock control panel, a mobile phone, a tablet personal computer, an infrared remote controller and the like.
The voltage regulating circuit comprises a triode Q (1-4), an electrolytic capacitor C (14-17), a carbon film resistor R (58-61), a precise adjustable resistor ADR (1-4) and the like.
In the implementation process, the MCU main control module is respectively connected with an external 12V power supply, an upper computer and other control terminals through 485 communication modules. The MCU main control module is also connected with an external illuminance sensor, an infrared dynamic and static sensor, fire-fighting system equipment, a third party manufacturer panel, a wireless decoding chip, an infrared decoding chip and the like through the dry contact module 10 for function expansion.
The dimming controller further comprises a protocol conversion module 11, and the protocol conversion module 11 can be connected with devices under other external protocols.
Examples
The embodiment provides a method for dimming a 0-10V output light source by adopting the dimmer, as shown in fig. 3, the specific implementation flow of the method is as follows:
1) Presetting an illumination scene/brightness scene on an upper computer, and transmitting scene information to a main control module;
writing instructions into the main control module through a system software package on the upper computer, wherein the system software package comprises system programming software, system central control software and Internet control software;
or the system programming software is utilized to preset the control terminal in advance, then the set scene is called, and the instruction is transmitted to the main control module, of course, any scene can be provided with partitions in the system programming software, so that the partition control is realized, and the scene can be expanded;
2) The main control module adjusts the voltage value of the dimming module according to the scene information, so that the adjustment of the power supply voltage of the dimming controller is realized, and meanwhile, the feedback module detects whether a circuit has a fault or not;
If no fault exists, the output signal of the voltage regulating module is converted into stable output voltage or current, the stable output voltage or current is connected to the dimming driver through the load output end, dimming driving is completed, and the main control module controls the relay group to open and close through the driving execution module to supply power for the light source. The basic principle of dimming through the dimming controller is as follows: the main control module and the photoelectric coupler control the charge and discharge time of the electrolytic capacitor in the voltage regulating circuit, so that the conduction angle of the voltage regulating circuit is continuously changed, and the voltage is regulated by utilizing the charge and discharge time of the voltage regulating circuit, so that the dimming control of the 0-10V output light source is realized, the impact on the lamp during power on and power off can be obviously reduced, the dimming curve is more relaxed and smoother, and the purpose of stable dimming is realized; the dimming driver adjusts the brightness of the light source according to the output voltage value of the voltage regulating circuit to form a final dimming control result.
And meanwhile, the main control module controls the opening and closing of the relays on the corresponding loops in the relay group through controlling the driving module according to the scene instruction information to supply power for the 0-10V light source.
3) The voltage of the 0-10V signal control end of the dimming driver changes, and the dimming driver is provided with a power supply input, so that the control of the brightness of the 0-10V light source and the corresponding scene effect are realized.
The final signal is converted into stable output voltage or output current after passing through the voltage regulating circuit, and is connected with a light source control end through a load output end 5, so that the brightness change of the 0-10V light source is controlled, and a final dimming control state is formed.
In the step 2), if the circuit has a fault, a bypass switch corresponding to the fault line of the relay group is closed, so that the power input end of the dimming driver is directly connected with the mains supply 16 through the air switch 15 and the relay group 6, and the strong current part is directly connected with the mains supply. It should be noted that: according to the type and default setting condition of the dimming driver 7 corresponding to the light source, for the dimming driver with 100% brightness of default output when no 0-10V control signal exists, a toggle switch is not required to be operated; for the dimming driver without default setting when no 0-10V control signal exists, the toggle switch needs to be adjusted to enable the built-in 10V power supply to be connected into the circuit, so that the 0-10V control signal is output, and the light source can meet 100% brightness emergency when the dimming system is in fault.
The dimming controller can call preset dimming scenes through a system software package and a control terminal on the upper computer, the preset dimming scenes are not dimmed, only the dimming scenes are on and off, and the preset dimming scenes are: the combination of lighting scenes or the linkage of lighting with equipment such as curtains, air conditioners, conference systems, sound equipment and the like.
In addition, the current feedback module can also query the current situation in real time to perform fault feedback and electricity consumption feedback.
The main control module receives signals from an external illuminance sensor or an infrared dynamic and static sensor, fire-fighting system equipment or a panel of a third party manufacturer, a wireless decoding chip or an infrared decoding chip and the like through the dry access point module to perform function expansion. The main control module can be in butt joint with equipment under other protocols through the protocol conversion module.
It should be noted that: the module power supply of the dimming controller is from a module power supply of 12V or 24V externally connected on the 485 communication module. The dimming controller is connected with the system gateway through the 485 communication module, so that the dimming controller can be connected with the Internet, and dimming control is carried out on the light source through mobile control terminals such as mobile phones or tablet computers. The dimming controller is also connected with other control equipment on the 485 bus through a 485 communication module.
The above description is only of the preferred embodiments of the present application and is not intended to limit the present application, but various modifications and variations can be made to the present application by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the protection scope of the present application.
While the foregoing description of the embodiments of the present invention has been presented in conjunction with the drawings, it should be understood that it is not intended to limit the scope of the invention, but rather, it is intended to cover all modifications or variations within the scope of the invention as defined by the claims of the present invention.
Claims (8)
1. The dimming controller acts on a dimming driver and is characterized by comprising a main control module, a dimming module, a communication module and a driving execution module, wherein the main control module is respectively connected with the dimming module, the communication module and the driving execution module, and the driving execution module and the dimming module are both connected with a light source through the dimming driver;
The main control module adjusts the output voltage of the dimming module by adjusting the conduction angle of the voltage adjusting circuit, so as to adjust the brightness of the light source;
the dimming module further comprises a photoelectric coupler and a load output end, one end of the voltage regulating circuit is connected with the main control module through the photoelectric coupler, and the other end of the voltage regulating circuit is connected with the dimming driver through the load output end to regulate the power supply voltage of the light source;
The voltage regulating circuit includes: electrolytic capacitor, rheostat and triode;
The output end of the photoelectric coupler is connected with one end of the rheostat through a resistor, is connected with the cathode of the electrolytic capacitor through the resistor, and is connected with a power supply through the resistor;
the base electrode of the triode is connected with the other end of the rheostat, the collector electrode of the triode is connected with the positive electrode of the electrolytic capacitor, and the emitter electrode of the triode is connected with the load output end; the emitting electrode of the triode is grounded through a resistor and is connected with a power supply through the resistor;
The resistance value of the electrolytic capacitor changes along with the instruction sent by the main control module, so that the current between the collector electrode and the base electrode of the triode changes; when dimming, the main control module and the photoelectric coupler control the charge and discharge time of the electrolytic capacitor in the voltage regulating circuit, so that the conduction angle of the voltage regulating circuit is continuously changed, and the voltage regulating is carried out by utilizing the charge and discharge time of the voltage regulating circuit, so that the dimming control of the output light source is realized.
2. The dimming controller of claim 1, wherein the drive execution module comprises a drive circuit and a relay group connected to each other, the drive circuit being connected to the master control module, the relay group being connected to the dimming driver;
The main control module controls the opening and closing of the relays in the relay group through the driving module, and further controls the power supply of the light source.
3. The dimming controller of claim 2, further comprising a feedback module, wherein the feedback module is connected with the main control module and the driving execution module respectively, and is configured to detect and process an internal fault and a back-end load fault of a loop where the feedback module is located in real time, and feedback the queried power consumption information to the main control module.
4. A dimming controller as claimed in claim 1, further comprising an internal power source connected to the load output, a toggle switch being provided between the internal power source and the load output.
5. The dimming controller of claim 1, further comprising a dry contact module coupled to the master control module for functionally expanding the dimming controller.
6. The dimming controller of claim 1, further comprising a protocol conversion module, wherein the protocol conversion module is connected to the main control module, and wherein the function of the dimming controller is extended by connection of the protocol conversion module to a device under a different protocol.
7. A dimming method using the dimming controller of claim 1, comprising the steps of:
Presetting an illumination scene, and transmitting brightness scene information of the illumination scene to a main control module;
the main control module adjusts the output voltage of the dimming module according to the brightness scene information, so as to adjust the power supply voltage of the dimming controller; the driving circuit is controlled to control the corresponding relay group in the driving execution module to be closed, and the light source is connected to the mains supply;
The light source control end of the dimming driver outputs a control signal to stably adjust the brightness of the light source.
8. The dimming method of the dimming controller according to claim 7, wherein the specific method for the main control module to adjust the output voltage of the dimming module according to the lighting scene is as follows: the main control module controls the charge and discharge time of the electrolytic capacitor in the voltage regulating circuit, so that the conduction angle of the triode in the voltage regulating circuit is changed, and the output voltage of the voltage regulating circuit is controlled.
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| GB2549333A (en) * | 2016-04-15 | 2017-10-18 | Rotolight Ltd | Lighting device and control thereof |
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