CN101827474A - Power carrier stepless dimming LED (Light Emitting Diode) multipath drive constant current system and controller - Google Patents
Power carrier stepless dimming LED (Light Emitting Diode) multipath drive constant current system and controller Download PDFInfo
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- CN101827474A CN101827474A CN200910304230A CN200910304230A CN101827474A CN 101827474 A CN101827474 A CN 101827474A CN 200910304230 A CN200910304230 A CN 200910304230A CN 200910304230 A CN200910304230 A CN 200910304230A CN 101827474 A CN101827474 A CN 101827474A
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Abstract
The invention belongs to the technical field of communication and relates to a stepless dimming LED (Light Emitting Diode) multipath drive constant current system for transmitting a signal by a power line carrier and a controller. The power carrier stepless dimming LED multipath drive constant current system comprises a remote control end, a concentrator, a plurality of controllers and a plurality of groups of LEDs, wherein the remote control end is connected with the concentrator by a network and transmits a control signal to the concentrator; the concentrator is connected with the controllers by a power line; the single controller is electrically connected with the single group of LEDs; the concentrator receives the control signal and broadcasts the control signal by the power line; and the controller receives and processes the control signal and controls the input current of an LED lamp group which is correspondingly connected with the controller. The invention not only controls the control signal of the LED lamp group by the power line transmission remote control end but also can obtain the working state information of the LED lamp group.
Description
[technical field]
The invention belongs to communication technical field, relate to a kind of stepless dimming LED (Light Emitting Diode) multipath drive constant current system and controller by the power line carrier transmission signals.
[background technology]
In the last few years, development along with the semiconductor light emitting technology, the brightness and the colour developing ability of semiconductor light-emitting-diode (LED) are greatly improved, can satisfy the needs of street lighting, and the LED light fixture there are total solids, pollution-free, long working life and advantages such as caloric value is low, super low-power consumption, obvious energy conservation.Discover: the light fixture that utilizes LED to make, its brightness can be nearly three times of ordinary incandescent lamp, and power consumption only is about 1/10 of an ordinary incandescent lamp, and useful working life but is more than 100 times of ordinary incandescent lamp, so application prospect is very good.
LED is used as lighting, is not only because above-mentioned advantage also because its is conveniently controlled, is particularly suitable in the LED multi-path circuit different LED or LED lamp group being controlled or regulating.
In street lamp illumination system, adopt LED as lighting, especially in the large tunnel illuminator, not only need can remote adjustment LED brightness and the ON/OFF of control LED, thereby regulate operating states such as the work brightness of LED or ON/OFF according to the variation of external environment light and shade, also need long-range operating state to follow the tracks of to LED, thereby the operating state that makes LED takes place can locate convenient for maintaining rapidly under the unusual situation.
LED multi-path is controlled and followed the tracks of need be to every paths of LEDs transmission signals, if employing wire transmission mode, such as adopting the twisted-pair feeder transmission of control signals, then need rearrange twisted-pair feeder or the coaxial cable that has the signal shielding function along power line, moreover, in the LED way more for a long time, also need to adopt switch or router between controller and LED, signal to be carried out relaying or addressing processing, also the circuit that a lot of bars arrive each paths of LEDs to be laid simultaneously, the cost of control system can be increased so undoubtedly.
Perhaps, adopt radio communication to come transmission of control signals, but with regard to present several communications commonly used, both had the transmission rate height, the characteristics that have long transmission distance again almost do not have, such as bluetooth and WIFI transmission means, though can satisfy the purpose of quick control LED on its transmission rate, but its transmission range is limited, its transmission range also is subjected to the influence of environment simultaneously, and when barrier intercepted, its transmission rate and transmission range obviously reduced, in the illuminating engineering of complex environment, it also is not suitable for being used as the delivery means of signal.
In addition, adopt bluetooth or WIFI to come transmission of control signals, also can increase the cost of LED illuminating engineering.
[summary of the invention]
The present invention in order to solve the existing problem of above-mentioned technology, proposes a kind of stepless dimming LED (Light Emitting Diode) multipath drive constant current system that transmits the LED control signal by power line just.
Its concrete technical scheme is as follows:
A kind of power carrier stepless dimming LED (Light Emitting Diode) multipath drive constant current system, comprise remote control terminal, concentrator, a plurality of controller and organize LED more, described remote control terminal is connected with described concentrator by network, and transmit control signal to concentrator, described concentrator is connected with a plurality of controllers, single controller is connected with single group LED, described concentrator receives described control signal, and to a plurality of controllers forwarding control signals, described controller receives described control signal and handles, the size of control and the LED lamp group input current of the corresponding connection of this controller.
Described concentrator is transmitted described control signal by wireless mode to a plurality of controllers, described modulation signal transmitting element comprises the signal transmitting antenna, be used to launch wireless signal, described modulation signal receiving element comprises signal receiving antenna, is used to receive described wireless signal.
More excellent is, described concentrator is transmitted described control signal by power line to a plurality of controllers, and described modulation signal transmitting element is connected with described modulation signal receiving element by described power line.
Described concentrator comprises:
The network signal receiving element is used to obtain described control signal;
Processing unit is used to control modulating unit work;
Modulating unit is used for described control signal is modulated into modulation signal;
The modulation signal transmitting element is used for described modulation signal is sent.
Described controller comprises:
The modulation signal receiving element is used to obtain described modulation signal;
Demodulating unit is used for described modulation signal demodulation;
Analysis and processing unit is used for the control signal of demodulating unit demodulation is analyzed and handled, and generates the control command of control LED driver element work;
Power unit; Be used for to LED driver element input constant DC;
The LED driver element is used to obtain described control command and controls the size of current that outputs to LED lamp group.
Power line carrier (PLC) is the distinctive communication mode of electric power system, and electric line carrier communication is meant and utilizes existing power line, the analog or digital signal carried out the technology of high-speed transfer by carrier system.Maximum characteristics are not need to set up again network, as long as live wire just can carry out data passes, in the illuminator that LED is controlled or follows the tracks of, adopt control or the tracking signal of PLC transmission LED can save engineering cost greatly.
Adopt the power line transmission signal not only to have everybody known influence because of various factors, make the disadvantage that signal transmission rate and transmission range all are restricted, another disadvantage is, can produce signal conflict by a shared power line to the controlled end transmission of control signals of different multichannels.
So, described concentrator also comprises a frequency adjustment unit, be used for changing the output frequency of modulation signal according to the time, output frequency in a certain time slot wants the signal frequency of demodulation corresponding with the demodulating unit of a controller, in this time slot, described concentrator and this controller are set up communication link.
Described controller also comprises:
The current and voltage signals sampling unit is used to gather the size of the current/voltage of LED lamp group;
Modulating unit is used for the current/voltage size information of described LED lamp group is modulated into modulation signal;
The modulation signal transmitting element is used for described modulation signal is sent;
Described concentrator also comprises:
The modulation signal receiving element is used to receive described modulation signal;
Demodulating unit is used for described modulation signal is carried out demodulation;
The network signal transmitting element is used for the LED lamp group size of current information after remote control terminal sends demodulation;
Described processing unit obtains the LED lamp group size of current information after the described demodulation and handles, and by the network signal transmitting element this LED lamp group size of current information is sent to remote control terminal.
The present invention also provides a kind of power carrier stepless dimming LED (Light Emitting Diode) multipath drive constant current controller, and this controller is connected with LED lamp group, comprising:
The modulation signal receiving element is used to obtain modulation signal;
Demodulating unit is used for described modulation signal demodulation;
Analysis and processing unit is used for the control signal of demodulating unit demodulation is analyzed and handled, and generates the control command of control LED driver element work;
Power unit; Be used for to LED driver element input constant DC;
The LED driver element is used to obtain described control command and controls the size of current that outputs to LED lamp group.
Described controller also comprises:
The current and voltage signals sampling unit is used to gather the size of the current/voltage of LED lamp group;
Modulating unit is used for the current/voltage size information of described LED lamp group is modulated into modulation signal;
The modulation signal transmitting element is used for described modulation signal is sent.
Beneficial technical effects of the present invention is:
Realized transmitting the control signal of control LED lamp group by power line, reduce greatly the cost of system.
By a shared power circuit many groups LED is realized different control;
Can obtain the size of current information of each LED lamp group, realize tracking LED lamp group brightness size information.
[description of drawings]
Fig. 1 is the block diagram of the embodiment of the invention 1;
Fig. 2 is the block diagram of the embodiment of the invention 2;
Fig. 3 is the block diagram of the embodiment of the invention 3.
[embodiment]
The present invention relates to a kind of power carrier stepless dimming LED (Light Emitting Diode) multipath drive constant current system, comprise remote control terminal, concentrator, a plurality of controller and organize LED more, described remote control terminal is connected with described concentrator by network, and transmit control signal to concentrator, described concentrator is connected with a plurality of controllers, single controller is connected with single group LED, described concentrator receives described control signal, and a plurality of controllers are transmitted control signal, described controller receives described control signal and handles, the size of control and the LED lamp group input current of the corresponding connection of this controller.
The invention will be further elaborated below in conjunction with Figure of description and specific embodiment:
As shown in Figure 1, a kind of power carrier stepless dimming LED (Light Emitting Diode) multipath drive constant current system, comprise a remote control terminal, one concentrator, a plurality of controllers and many group LED, described Long-distance Control control end is connected with described concentrator by network, described control end is computer or mobile phone or other control appliances that can transmit control signal, comprise the network signal transmitting element, be used for transmitting control signal to described concentrator, described concentrator comprises the network signal receiving element, be used to obtain described control signal, described concentrator also comprises processing unit, modulating unit and modulation signal transmitting element, described processing unit is used to control modulating unit work, modulating unit is used for described control signal is modulated into modulation signal, and described modulation signal transmitting element is used for described modulation signal is sent.
Described modulating unit comprises signal coupling circuit, D/A change-over circuit, bandwidth-limited circuit and power amplification circuit, described signal coupling circuit is connected with described D/A change-over circuit, described D/A change-over circuit is connected with described bandwidth-limited circuit, described bandwidth-limited circuit is connected with described power amplification circuit, and described control signal sends to the processing of modulation signal transmitting element through converting to through the D/A change-over circuit after the signal coupling circuit coupling analog signal sends to the power amplification circuit amplification after bandwidth-limited circuit filters after again.
Described modulation signal transmitting element is connected with a power line, be connected with N controller on this power line, first controller and first group of LED are electrically connected, second controller and second group of LED are electrically connected, N controller of Pang and N group LED are electrically connected, each controller is controlled every group of LED, and every single described controller comprises:
One modulation signal receiving element is used to obtain described modulation signal;
One demodulating unit is used for described modulation signal demodulation;
One analysis and processing unit is used for the control signal of demodulating unit demodulation is analyzed and handled, and generates the control command of control LED driver element work;
One power unit; Be used for to LED driver element input constant DC;
One LED driver element is used to obtain described control command and controls the size of current that outputs to LED lamp group.
Every single described demodulating unit comprises an A/D change-over circuit, a bandwidth-limited circuit, and the modulation signal transitions of the simulation that described A/D change-over circuit will receive becomes digital signal to send to the analysis and processing unit processing after band filters with filter circuit.
Every single described power unit comprises a regulator rectifier circuit, a voltage stabilizing circuit and a constant-current circuit, described regulator rectifier circuit is transformed into low-voltage DC with civil power, after handling, voltage stabilizing circuit, after constant-current circuit is handled, imports constant DC to the LED driver element to analysis and processing unit, modulation signal receiving element and demodulating unit power supply.
Described network is wired Internet network or radio honeycomb mobile communications network.
The D brightness of present embodiment remote control terminal control LED lamp group or the operation principle of open/close state are as follows:
Described remote control terminal is after LED lamp group sends control LED brightness or ON/OFF signal, this control signal is sent to concentrator, pass through the network signal receiving element successively in control signal described in the concentrator, processing unit, modulating unit, the modulation signal transmitting element is handled the back and is sent to controller by power line, all controllers that are connected with this concentrator all can receive this control signal, this control signal is passed through the modulation signal receiving element successively in single controller, demodulating unit, analysis and processing unit sends to the LED driver element after handling, this LED driver element receives to be regulated it after this control signal and outputs to the size of the LED lamp group electric current that is electrically connected with this LED driver element, thereby plays the brightness or the open/close state of control LED lamp group.
In this embodiment, because concentrator can not send different control signals to different controller, brightness regulation or open/close state when all these concentrators can only be controlled all and pass through all LED lamp groups of control connection with this concentrator.
Embodiment 2
On the basis of the foregoing description 1, can control the brightness regulation or the open/close state of different controllers and then control different LED in order to make concentrator, as shown in Figure 2, this system also comprises: described concentrator also comprises a frequency adjustment unit, be used for changing the output frequency of modulation signal according to the time, output frequency in a certain time slot wants the signal frequency of demodulation corresponding with the demodulating unit of a controller, and in this time slot, described concentrator and this controller are set up communication link.
The frequency band of described modulation signal is divided into the time slot identical with described amount controller, and when the quantity of controller was N, number of timeslots also was N, and the bandwidth and the frequency interval of the frequency segment that each time slot is shared are identical.
In some time slots, the modulating unit of described concentrator can be modulated the signal for the frequency range of this time slot correspondence, the modulation signal transmitting element of this concentrator is broadcasted away this signal by power line, and the frequency range of each control received signal is different, the frequency range of some controller received signals is corresponding with the frequency range in some time slots, when some time slots, the controller that described concentrator is corresponding with this time slot produces communication, because time slot is very short, so can guarantee the continuous transmission of signal.
In the present embodiment, owing to increased the frequency adjustment unit, it is different to make concentrator send to the signal frequency of each controller, avoided arriving the conflict between the signal of different controllers, thereby make concentrator can control and send different control signals, play the purpose of controlling each LED lamp group brightness or open/close state respectively to different controllers.
Embodiment 3
In the foregoing description, can only be by concentrator control controller, thereby LED lamp group is controlled, can not follow the tracks of the state information of every group of LED, so on the basis of the foregoing description 1 and embodiment 2, as shown in Figure 3, described controller also comprises:
The current and voltage signals sampling unit is used to gather the size of the current/voltage of LED lamp group;
The current/voltage size information of the LED lamp group of described collection is sent to analysis and processing unit, analysis and processing unit,
Modulating unit is used for obtaining the size of current information of described LED lamp group and it being modulated into modulation signal from described analysis and processing unit;
The modulation signal transmitting element is used for described modulation signal is sent;
Described concentrator also comprises:
The modulation signal receiving element is used to receive described modulation signal;
Demodulating unit is used for described modulation signal is carried out demodulation;
The network signal transmitting element is used for the LED lamp group size of current information after remote control terminal sends demodulation;
Described processing unit obtains the LED lamp group size of current information after the described demodulation and handles, and by the network signal transmitting element this LED lamp group size of current information is sent to remote control terminal.
In embodiment 2, on the D brightness of remote control terminal control LED lamp group or the basis of open/close state, it is as follows that the work state information of LED lamp group is that the current/voltage size information of LED lamp group work is sent to the operation principle of remote control terminal:
The current and voltage signals sampling unit of single controller collects the analog signal values of the current/voltage size of LED lamp group work from the LED lamp group that is electrically connected with this stream voltage signal sampling unit, after the A/D conversion, produce the digital signal value of the current/voltage size information of LED lamp group, this LED lamp group current/voltage size information in controller successively through the current and voltage signals sampling unit, analysis and processing unit, modulating unit, the modulation signal transmitting element sends to concentrator after handling, in concentrator, this LED lamp group current/voltage size information is successively through the modulation signal receiving element, demodulating unit, processing unit, the network signal transmitting element sends to the remote control terminal of network side.
Should be noted that; the foregoing description that the present invention provides is explanation rather than the restriction to the present invention's design; the cardinal principle of the present invention's design is by the control signal of power line transmission remote control terminal control LED lamp group or the work state information of LED lamp group, all should be within protection scope of the present invention as long as belong to design of the present invention.
Claims (7)
1. power carrier stepless dimming LED (Light Emitting Diode) multipath drive constant current system, comprise remote control terminal, concentrator, a plurality of controllers and many group LED, described remote control terminal is connected with described concentrator by network, and transmit control signal to concentrator, described concentrator is connected by power line with a plurality of controllers, LED is electric connects for single controller and single group, described concentrator receives described control signal, and described control signal is broadcasted away by power line, described controller receives described control signal and handles, the size of control and the LED lamp group input current of the corresponding connection of this controller.
2. a kind of power carrier stepless dimming LED (Light Emitting Diode) multipath drive constant current according to claim 1 system is characterized in that described concentrator comprises:
The network signal receiving element is used to obtain described control signal;
Processing unit is used to control modulating unit work;
Modulating unit is used for described control signal is modulated into modulation signal;
The modulation signal transmitting element is used for described modulation signal is sent.
3. a kind of power carrier stepless dimming LED (Light Emitting Diode) multipath drive constant current according to claim 2 system is characterized in that described controller comprises:
The modulation signal receiving element is used to obtain described modulation signal;
Demodulating unit is used for described modulation signal demodulation;
Analysis and processing unit is used for the control signal of demodulating unit demodulation is analyzed and handled, and generates the control command of control LED driver element work;
Power unit; Be used for to LED driver element input constant DC;
The LED driver element is used to obtain described control command and controls the size of current that outputs to LED lamp group.
4. a kind of power carrier stepless dimming LED (Light Emitting Diode) multipath drive constant current according to claim 3 system, it is characterized in that, described concentrator also comprises a frequency adjustment unit, be used for changing the output frequency of modulation signal according to the time, output frequency in a certain time slot wants the signal frequency of demodulation corresponding with the demodulating unit of a controller, in this time slot, described concentrator and this controller are set up communication link.
5. a kind of power carrier stepless dimming LED (Light Emitting Diode) multipath drive constant current according to claim 4 system is characterized in that described controller also comprises:
The current and voltage signals sampling unit is used to gather the current/voltage size of LED lamp group;
Modulating unit is used for the current/voltage size information of described LED lamp group is modulated into modulation signal;
The modulation signal transmitting element is used for described modulation signal is sent;
Described concentrator also comprises:
The modulation signal receiving element is used to receive described modulation signal;
Demodulating unit is used for described modulation signal is carried out demodulation;
The network signal transmitting element is used for the LED lamp group size of current information after remote control terminal sends demodulation;
Described processing unit obtains the LED lamp group size of current information after the described demodulation and handles, and by the network signal transmitting element this LED lamp group size of current information is sent to remote control terminal.
6. power carrier stepless dimming LED (Light Emitting Diode) multipath drive constant current controller, this controller is connected with LED lamp group, comprising:
The modulation signal receiving element is used to obtain modulation signal;
Demodulating unit is used for described modulation signal demodulation;
Analysis and processing unit is used for the control signal of demodulating unit demodulation is analyzed and handled, and generates the control command of control LED driver element work;
Power unit; Be used for to LED driver element input constant DC;
The LED driver element is used to obtain described control command and controls the size of current that outputs to LED lamp group.
7. a kind of power carrier stepless dimming LED (Light Emitting Diode) multipath drive constant current controller according to claim 6 is characterized in that described controller also comprises:
The current and voltage signals sampling unit is used to gather the size of the current/voltage of LED lamp group;
Modulating unit is used for the current/voltage size information of described LED lamp group is modulated into modulation signal;
The modulation signal transmitting element is used for described modulation signal is sent.
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| CN102724791A (en) * | 2012-04-28 | 2012-10-10 | 苏州工业园区和昕国际新能源有限公司 | Intelligent carrier remote drive and control system for light emitting diode (LED) lighting |
| CN102740542A (en) * | 2011-06-17 | 2012-10-17 | 贺锡魁 | LED (light-emitting diode) lamp and LED control system |
| CN103228089A (en) * | 2013-05-14 | 2013-07-31 | 浙江晶日照明科技有限公司 | Single line communication method for control of LED (Light-Emitting Diode) lamp |
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| CN105323926A (en) * | 2015-11-06 | 2016-02-10 | 普天智能照明研究院有限公司 | Dimming system and method |
| CN105430846A (en) * | 2015-12-17 | 2016-03-23 | 李海林 | Power line communication-based lighting controller |
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| CN108650751A (en) * | 2018-07-23 | 2018-10-12 | 上海芯鸿电子科技有限公司 | A kind of color LED lamp bead of two lines communication |
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| CN105430846A (en) * | 2015-12-17 | 2016-03-23 | 李海林 | Power line communication-based lighting controller |
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| CN108650751A (en) * | 2018-07-23 | 2018-10-12 | 上海芯鸿电子科技有限公司 | A kind of color LED lamp bead of two lines communication |
| CN110049595A (en) * | 2019-04-24 | 2019-07-23 | 金松山 | LED industrial lighting wired remote intelligent multi-channel dimming controlling method |
| CN110049595B (en) * | 2019-04-24 | 2022-05-24 | 金松山 | Wired remote intelligent multi-channel dimming control method for LED industrial illumination |
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Application publication date: 20100908 |