CN201813591U - Wireless drive system for LED (light emitting diode) - Google Patents

Wireless drive system for LED (light emitting diode) Download PDF

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Publication number
CN201813591U
CN201813591U CN2010202119421U CN201020211942U CN201813591U CN 201813591 U CN201813591 U CN 201813591U CN 2010202119421 U CN2010202119421 U CN 2010202119421U CN 201020211942 U CN201020211942 U CN 201020211942U CN 201813591 U CN201813591 U CN 201813591U
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China
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led
current
wireless
light source
communication module
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CN2010202119421U
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Chinese (zh)
Inventor
杨国仁
陈虹
李慧
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杭州奥能照明电器有限公司
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Priority to CN2010202119421U priority Critical patent/CN201813591U/en
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Publication of CN201813591U publication Critical patent/CN201813591U/en

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Abstract

The utility model discloses a wireless drive system for an LED (light emitting diode), which comprises an upper computer, a wireless communication module and at least one path of LED drive module, wherein each path of LED drive module is connected with an LED light source; the upper computer is used for wirelessly transmitting a dimming control signal to the designated LED drive module through the wireless communication module; the LED drive module comprises a singlechip, a current sampling unit and an LED drive source, wherein the singlechip is used for receiving the dimming control signal and converting into corresponding PWM (pulse-width modulation) waveform; the current sampling unit is used for receiving the sampling current fed back by the LED light source; the LED drive source is combined with the sampling current according to the change of the PWM waveform and adjusts drive current output to the LED light source; and the wireless communication module is used for realizing the wireless communication between the upper computer and the singlechip. By adopting the embodiment of the utility model, the power supply drive for the LED light source can be wirelessly realized.

Description

A kind of wireless drive system of light-emitting diode

Technical field

The utility model relates to the led technology field, particularly relates to a kind of wireless drive system of light-emitting diode.

Background technology

Current China electric power energy is comparatively nervous, and the coal resources storage is limited, and a lot of areas are easy to occur the short phenomenon of powering in peak times of power consumption.Electric consumption on lighting accounts for 20% of China's power consumption, therefore carries out the saving that energy conservation can realize electric power resource effectively aspect electric consumption on lighting.

LED (Light Emitting Diode, light-emitting diode) is a kind of semiconductor device that can directly be converted into electricity visible light.LED is applied to the demonstration of indicator light, numeral and literal the earliest.Along with the appearance of White LED, to have operating voltage low for LED in addition.Little power consumption, luminous efficiency height, long advantage of life-span, led light source obtains application more and more widely in the general illumination field.Led light source is the luminescent device of a kind of not only energy-conservation but also environmental protection, compares with conventional light source, and the LED lamp is than incandescent lamp power saving 80%, than fluorescent lamp power saving 50%.

Existing LED driving power generally all adopts wired control mode.In the wired driving power of existing LED, need to arrange a large amount of wire ropes that make the layout of led light source have bigger limitation, dumb, extensibility is relatively poor, safeguards comparatively loaded down with trivial details.Simultaneously, wearing out, scrapping of wire rope can pollute environment, and the human lives is had sizable potential safety hazard.

The utility model content

In view of this, the purpose of this utility model is to provide a kind of wireless drive system of light-emitting diode, can be by the power drives of wireless mode realization to led light source.

The utility model embodiment provides a kind of wireless drive system of light-emitting diode, and described system comprises: host computer, wireless communication module and at least one paths of LEDs driver module; The described LED driver module in every road connects a led light source;

Described host computer is used for dimming control signal is sent to the designated LED driver module by wireless communication module with wireless;

Described LED driver module comprises: single-chip microcomputer, current sampling unit, LED driving power;

Described single-chip microcomputer is used to receive described dimming control signal, is converted into corresponding PWM waveform, exports the LED driving power to;

Described current sampling unit is used to receive the sample rate current that described led light source feeds back, and exports described LED driving power to;

Described LED driving power is used for the variation according to described PWM waveform, in conjunction with described sample rate current, adjusts the output to the drive current of led light source;

Described wireless communication module is used to realize the wireless telecommunications between host computer and the single-chip microcomputer.

Preferably, described LED driving power comprises: filter rectifier, PFC correcting circuit, double tube positive exciting circuit, constant-current control circuit;

Described filter rectifier is used for the input ac voltage that receives is carried out High frequency filter and rectification, and the output all-wave is to the PFC correcting circuit;

Described PFC correcting circuit is used for the all-wave that receives is carried out power factor correction, exports stable DC bus-bar voltage to described double tube positive exciting circuit;

Described constant-current control circuit, be used to receive described PWM waveform and sample rate current, determine the size of reference current according to described PWM waveform, after operational amplifier, the output constant current controls signal to described double tube positive exciting unit with described reference current and described sample rate current comparison;

Described double tube positive exciting unit, the DC bus-bar voltage that is used for being received from described PFC correcting circuit is transformed to the required voltage of the described led light source of driving; According to described constant current control signal, adjust the output to the drive current of described led light source.

Preferably, described wireless communication module is the ZigBee communication module;

Described ZigBee communication module comprises: telegon, at least one road router or terminal equipment; Wherein,

Described telegon links to each other with described host computer, is used to receive described dimming control signal, is sent to the router and/or the terminal equipment of host computer appointment with wireless;

Each described router and/or terminal equipment link to each other with a paths of LEDs driver module, and the dimming control signal that is used for receiving is sent to coupled LED driver module.

Preferably,

Described router directly links to each other with described LED driver module;

Or,

Described router links to each other with described LED driver module by subordinate equipment.

Preferably, described router connects at least one described subordinate equipment;

Described subordinate equipment is terminal equipment or router.

Preferably, described ZigBee communication module adopt serial interface communication mode realize with described single-chip microcomputer between communicate by letter.

Preferably, described ZigBee communication module adopt serial interface communication mode realize with described host computer between communicate by letter

According to the specific embodiment that the utility model provides, the utility model discloses following technique effect:

In the described wireless drive system of the utility model embodiment, adopt the wireless telecommunications between wireless communication module realization host computer and the LED driver module, realize wireless driving thus led light source.Compared with prior art, do not need to arrange metallic cable, make the layout of led light source have very big flexibility, extensibility is better; Also saved maintenance work, made easier the maintenance of led light source to metallic cable; Simultaneously, solved, environment has been polluted, brought the problem of potential safety hazard to the human lives because of the wearing out, scrap of wire rope.

Description of drawings

Fig. 1 is the wireless drive system structure chart of the described light-emitting diode of the utility model embodiment.;

Fig. 2 is the described LED driver module of a utility model embodiment structure chart;

Fig. 3 is the circuit diagram of the described constant-current control circuit of the utility model embodiment;

Fig. 4 is the control circuit figure of the double tube positive exciting circuit of the utility model embodiment;

Fig. 5 is the described driving power integrated circuit of the utility model embodiment figure;

Fig. 6 is the wireless communication module structure chart of the utility model embodiment.

Embodiment

For above-mentioned purpose of the present utility model, feature and advantage can be become apparent more, the utility model is described in further detail below in conjunction with the drawings and specific embodiments.

In view of this, the purpose of this utility model is to provide a kind of wireless drive system of light-emitting diode, can be by the power drives of wireless mode realization to led light source.

With reference to Fig. 1, be the wireless drive system structure chart of the described light-emitting diode of the utility model embodiment.Described system comprises: host computer 1, wireless communication module 2 and at least one paths of LEDs driver module 3.

Described host computer 1 is used for dimming control signal is sent to designated LED driver module 3 by wireless communication module 2 with wireless.

The described LED driver module 3 in every road connects a led light source 4, is used for exporting corresponding constant current control signal according to receiving dimming control signal, regulates the brightness of coupled led light source 4, realizes the brightness adjustment control to led light source.

Concrete, when the dimming control signal of host computer output changes, described PWM waveform also will change.Described LED driver module 30 is according to the variation of described PWM waveform, and the constant current control signal of regulating output changes, and then regulates the brightness of coupled led light source 4, realizes the brightness adjustment control to led light source 4.

Need to prove that the structure of the described LED driver module 3 in every road is all identical, comprise single-chip microcomputer 31, current sampling unit 32 and LED driving power 33.

Wherein, described single-chip microcomputer 31 links to each other with described wireless communication module 2, is used to receive described dimming control signal, and is converted into corresponding PWM waveform, exports LED driving power 33 to.

Described current sampling unit 32 is connected with described led light source 4, is used to receive the sample rate current that described led light source 4 feeds back to, and exports described LED driving power 33 to.

Described LED driving power 33, be used for variation,, adjust the output to the drive current variations of coupled led light source 4 in conjunction with described sample rate current according to the PWM waveform of described single-chip microcomputer 31 outputs, and then regulate the brightness of described led light source 4, realize brightness adjustment control to led light source 4.

Wireless communication module 2 is used to realize the wireless telecommunications between host computer 1 and the single-chip microcomputer 3.

Among the utility model embodiment, adopt the wireless telecommunications between wireless communication module realization host computer and the LED driver module, realize wireless driving thus led light source.Compared with prior art, do not need to arrange metallic cable, make the layout of led light source have very big flexibility, extensibility is better; Also saved maintenance work, made easier the maintenance of led light source to metallic cable; Simultaneously, solved, environment has been polluted, brought the problem of potential safety hazard to the human lives because of the wearing out, scrap of wire rope.

Concrete, referring to shown in Figure 2, be the described LED driver module of the utility model embodiment structure chart.Described LED driver module comprises: single-chip microcomputer 31, current sampling unit 32 and LED driving power 33.

Wherein, described LED driving power 33 comprises: filter rectifier 331, PFC correcting circuit 332, double tube positive exciting circuit 333, constant-current control circuit 334.

Described filter rectifier 331 is used for the input ac voltage that receives is carried out High frequency filter and rectification, and the output all-wave is to PFC correcting circuit 332.

Concrete, described filter rectifier 331 can be made up of EMI (Electromagnetic Interference, electromagnetic interference) filter circuit and rectifier bridge.

Described EMI filter circuit is used for the input ac voltage that receives is carried out High frequency filter, and the high frequency clutter in can the filtering input ac voltage suppresses High-frequency Interference in the AC network to the influence of equipment, simultaneously also suppression equipment to the interference of AC network.Described rectifier bridge carries out rectification to having passed through the filtered input ac voltage of EMI filter circuit, and the output all-wave is to PFC correcting unit 332.Wherein, described input ac voltage is generally the input of 220V civil power.

Described PFC correcting circuit 332 is used for the all-wave that receives is carried out power factor correction, exports stable DC bus-bar voltage to described double tube positive exciting circuit 333.

For the LED driving power, because electronic switch is non-linear, make the Harmonics of Input content of interface circuit very high, cause the net side power factor of power electronic equipment lower.Along with power electronic system the increasing day by day of capacity of casting net, make Harmonics of Input also more and more serious to the influence of electrical network.In order to limit the distortion of input current, suppress harmonic content, the International Power tissue has proposed the standard that harmonic wave suppresses, and adds circuit of power factor correction in power electronic equipment, makes the current on line side sineization, and maintenance and line voltage homophase.

Concrete, in the described LED driving power of the utility model embodiment, adopt PFC correcting circuit 332, improve the power factor of described driving power, save reactive power loss, some problems of avoiding the 3rd order harmonics electric current in the AC network to cause.Concrete, generally there is not the driving power of PFC correcting circuit, its power factor is about 0.5-0.7, its power factor of driving power of band PFC correcting circuit can reach more than 0.99.

Described constant-current control circuit 334, be used to receive the PWM waveform of single-chip microcomputer 31 outputs and the sample rate current of current sampling unit 32 outputs, determine the size of reference current according to described PWM waveform, after operational amplifier, the output constant current controls signal to described double tube positive exciting circuit 333 with described reference current and described sample rate current comparison.

Described double tube positive exciting circuit 333 belongs to the DC/DC translation circuit, and the DC bus-bar voltage that is used for being received from described PFC correcting circuit 332 is transformed to the required voltage of the described led light source of driving; Simultaneously, described double tube positive exciting unit 333 adjusts the output to the size of the drive current of coupled led light source 4 according to described constant current control signal, and then the brightness of the described led light source of regulating 4, realizes the brightness adjustment control to led light source 4.

With reference to shown in Figure 3, be the circuit diagram of the described constant-current control circuit of the utility model embodiment.Described constant-current control circuit 334 comprises the second opto-coupler chip U2 and at least one road control branch road.As shown in Figure 3, the described constant-current control circuit 334 of the utility model embodiment can comprise multichannel control branch road, and wherein, every described control branch road is used to control one tunnel led light source 4.

Controlling branch roads with 4 the tunnel among Fig. 3 is that example describes, and in actual applications, the way that described constant-current control circuit 334 comprises can specifically be set according to actual needs.

Need to prove that the circuit structure of many branch roads that described constant-current control circuit 334 comprises is identical with operation principle.Be that example is elaborated now with branch road wherein.

As shown in Figure 3, the described second opto-coupler chip U2 adopts the TLP521 chip, comprises 4 pins, and wherein pin one and pin two are emission side, and pin 3 and pin 4 are sensitive side.The pin one of the described second opto-coupler chip U2 connects the PWM waveform that described single-chip microcomputer 31 is exported through resistance R 21, and the pin 3 of the described second opto-coupler chip U2 connects the positive input terminal of the operational amplifier of each bar control branch road.Thereby, the PWM waveform of described single-chip microcomputer 31 outputs is through the described second opto-coupler chip U2, the output reference electric current is to the positive input terminal of the operational amplifier of each bar control branch road, makes the reference current of each operational amplifier positive input terminal input change with the variation of described PWM waveform.

As shown in Figure 3, be that example describes with operational amplifier U1A place branch road.Described control branch road comprises: operational amplifier U1A, first resistance R 5, second resistance R 6, the 3rd resistance R 7, the 4th resistance R 8, first capacitor C 4, second capacitor C 5, the 3rd capacitor C 6, diode D1.

Wherein, the positive input termination reference current of described operational amplifier U1A, the negative input end of described operational amplifier U1A connects the led light source 4 that links to each other with described control circuit by first resistance R 5, receive the sample rate current that described led light source 4 returns, the negative input end of described operational amplifier U1A is through first capacitor C, 4 ground connection; The output of described operational amplifier U1A connects the negative electrode of described diode D1 through the 4th resistance R 8, and the anode of described diode D1 connects the output of described constant-current control circuit 334, exports described constant current and controls signal to described double tube positive exciting unit 333.

Described second capacitor C 5 is connected back and is connected between the negative input end and output of described operational amplifier U1A with second resistance R 6; Described the 3rd resistance R 7 also is connected between the negative input end and output of described operational amplifier U1A; The output of described operational amplifier U1A is through described the 3rd capacitor C 6 ground connection.

Concrete, the PWM waveform of described single-chip microcomputer 31 outputs inserts the input of the second opto-coupler chip U2 by resistance R 21, change the size of the reference current of described operational amplifier positive input terminal input by the described second opto-coupler chip U2, make described operational amplifier output constant current control signal to described double tube positive exciting unit 333, change the size that it exports the drive current of led light source 4 to.

With reference to shown in Figure 4, be the control circuit figure of the double tube positive exciting circuit of the utility model embodiment.

The control circuit of described double tube positive exciting circuit 333 adopts chip UC3844 to realize.Described UC3844 chip is a high-performance fixed frequency current mode controller, is used to export the pwm pulse signal of the switching tube action of controlling double tube positive exciting circuit 333.

As shown in Figure 4, described UC3844 chip comprises 8 pins.Below its each functions of pins is connected with peripheral circuit and does simple introduction.

Pin one (COMP pin) can be used for loop compensation for error amplifier output, and described pin one connects feedback voltage by resistance R 3 and resistance R 2;

Pin two (VFB pin) is the inverting input of error amplifier, and described pin two connects feedback voltage by resistance R 2, simultaneously, by resistance R 2 and resistance R 4 ground connection, capacitor C 3 and be connected in pin two and pin one between;

Pin 3 (C/S pin) is the sample rate current input, and described pin 3 connects current sample by resistance R 6, and simultaneously, pin 3 is by capacitor C 7 ground connection, and wherein, described current sample is the current sample of the switching tube of described double tube positive exciting circuit 333;

Pin 4 (RT/CT pin) is connected to pin 8 (VREF pin) by resistance R 5, is connected to ground by capacitor C 5, and capacitor C 4 is connected between pin 4 and the pin 3;

Pin 5 (GLD pin) is the public ground of control circuit and power supply;

Pin 6 (OUT pin) is the pwm pulse output pin, drives the pwm pulse signal of the switching tube action of described double tube positive exciting circuit 333 by resistance R 7 outputs;

Pin 7 (VCC pin) connects starting resistor, and described pin 7 is respectively through capacitor C 2 and CA1 ground connection;

Pin 8 (VREF pin) is with reference to output, provides charging current by resistance R 5 to capacitor C 5, and described pin 8 meets normal voltage+5V, simultaneously through capacitor C 6 ground connection.With reference to shown in Figure 5, be the described driving power integrated circuit of the utility model embodiment figure.Described driving power 33 comprises: filter rectifier 331, PFC correcting circuit 332, double tube positive exciting circuit 333, constant-current control circuit 334.

Wherein, constant-current control circuit 334 shown in Figure 3 inserts driving power circuit figure shown in Figure 5 by connector J3; The control circuit of double tube positive exciting circuit 333 shown in Figure 4 inserts driving power circuit figure shown in Figure 5 by connector J1.

As shown in Figure 5, the constant current control signal of described constant-current control circuit 334 outputs by the 5th pin of described connector J3, is imported the pin two of the first opto-coupler chip U1 shown in Figure 5; The voltage that is used for driving LED light source 4 of the output of described double tube positive exciting circuit 333 is received the pin one of the described first opto-coupler chip U1 by resistance R 33; The pin 3 of the described first opto-coupler chip U1 and pin 4 connect the control chip of described double tube positive exciting circuit 333 respectively by the 1st pin and the 2nd pin of described connector J1.

The PWM control impuls of the control circuit output of described double tube positive exciting circuit 333, import described double tube positive exciting circuit 333 by the 4th pin of described connector J1, thereby control the switching tube Q2 and the Q3 action of described double tube positive exciting circuit 333, make described led circuit be in the operating state of constant voltage and constant current thus.

Concrete, the pwm signal of described single-chip microcomputer 31 outputs is through the second opto-coupler chip U1 of described constant-current control circuit 334, change the reference current of each operational amplifier positive input terminal in the described constant-current control circuit 334, described reference current and sample rate current through described operational amplifier relatively after, the constant current of output controls signal to described double tube positive exciting circuit 333, change the switching speed of described switching tube Q2 and Q3, thereby change the drive current on the led light source 4.

By the general knowledge of this area as can be known, led light source 4 is to adopt constant-current driving, and when the drive current that flows through LED power supply 4 changes, the output brightness of led light source 4 will change, and has therefore realized the adjusting of the brightness of described led light source 4.

In the described drive system of the utility model embodiment, adopt the wireless telecommunications between wireless communication module realization host computer and the LED driver module, realize wireless driving thus led light source.

Concrete, described wireless communication module 2 can be realized by the ZigBee communication module.Wherein, ZigBee be a kind of closely, low-power consumption, low transmission rate, low complex degree, wireless communication technology cheaply, be mainly used in the fields such as automated intelligent control, sensing, monitoring and Long-distance Control of industry and household.ZigBee also has the big advantage of network capacity, and a ZigBee network can comprise 65535 network nodes at most.The ZigBee communication module can embed in the electronic equipment, supports geographic positioning functionality simultaneously.

With reference to Fig. 6, be the wireless communication module structure chart of the utility model embodiment.In shown in Figure 6, described wireless communication module 2 adopts the ZigBee communication module to realize.Described wireless communication module 2 comprises: telegon 21, at least one road router two 2 or terminal equipment 23.

The telegon 22 of described ZigBee communication module is set up wireless network, by the wireless telecommunications between wireless network realization and described router two 2 and/or the terminal equipment 23.

Wherein, described telegon 21 links to each other with host computer 1, is used to receive the dimming control signal that host computer 1 sends, and is sent to the router two 2 and/or the terminal equipment 23 of host computer 1 appointment with wireless.Each described router two 2 links to each other with a paths of LEDs driver module 3 with/terminal equipment 23, and the dimming control signal that is used for receiving is sent to coupled LED driver module 3.

In the described ZigBee communication module of the utility model embodiment, only need a telegon 21 can realize and host computer 1 between communication.

Behind described telegon 21 power-up initializings, initiatively set up a wireless network, and wait for the adding of router two 2 and/or terminal equipment 23.Described telegon 21 can be by router two 2 in wireless network realization and the described wireless network of adding and/or the wireless telecommunications between the terminal equipment 23.

Concrete, described ZigBee communication module can comprise multichannel router two 2 and/or terminal equipment 23.Every road router two 2 can be used to be connected a paths of LEDs driver module 3 with terminal equipment 23, realizes the controlled in wireless to a paths of LEDs light source 4.

Wherein, described terminal equipment 23 is a terminal note, and it can only directly link to each other with described LED driver module 3, exports the dimming control signal that receives to coupled LED driver module 3.

Described router two 2 can directly link to each other with described LED driver module 3, also can link to each other with described LED driver module 3 by subordinate equipment, allows its subordinate equipment to join in the wireless network.

When described router two 2 directly linked to each other with described LED driver module 3, described router two 2 directly exported the dimming control signal that receives to coupled LED driver module 3.

When described router two 2 linked to each other with described LED driver module 3 by subordinate equipment, described router two 2 exported the dimming control signal that receives to coupled LED driver module 3 by described subordinate equipment.

Concrete, each described router two 2 can connect at least one subordinate equipment, and each subordinate equipment connects a paths of LEDs driver module 3, realizes the controlled in wireless to a paths of LEDs light source 4.

Concrete, described subordinate equipment can be terminal equipment, also can be router.As the router of subordinate equipment, identical with higher level's router feature, both can directly link to each other with described LED driver module 3, also can link to each other with described LED driver module 3 by subordinate equipment.

Need to prove that in the described system of the utility model embodiment, communicating by letter between the described telegon 21 of ZigBee communication module and described router two 2 and/or the terminal equipment 23 relies on network number to discern.

Concrete, in the described ZigBee communication module, when described router two 2 or terminal equipment 23 application adding wireless networks, telegon 21 can be accordingly that the router two 2 or the terminal equipment 23 of each access of radio network distributes a network number; For the subordinate equipment of router two 2, when the subordinate equipment application of router two 2 added this wireless network, the subordinate equipment that telegon 21 also can be accordingly adds described wireless network for each of router two 2 distributed a network number.

At this moment, corresponding, include the information of designated LED light source 4 in the dimming control signal that host computer 1 sends.Described telegon 21 can be discerned the dimming control signal that is received from host computer 1, what determine this dimming control signal specified control is which led light source 4, according to the router two 2 of these paths of LEDs light source 4 correspondences or the network number of terminal equipment 23, described dimming control signal is sent to corresponding router two 2 or terminal equipment 23.

Concrete, from the above, each router two 2 or terminal equipment 23 connect a paths of LEDs light source 4 by a paths of LEDs driver module 3 respectively.Therefore, we can say that each router two 2 or terminal equipment 23 are corresponding with a paths of LEDs light source 4.Set up each router two 2 or terminal equipment 23 network number, with respectively with its corresponding led light source 4 between one-to-one relationship, and be kept in the described telegon 21.

Described telegon 21 can be according to the information and the described corresponding relation of the led light source 4 that comprises in the described dimming control signal, determines the network number corresponding with this led light source 4, discerns the router two 2 or the terminal equipment 23 of this network number correspondence.

Need to prove, among the utility model embodiment, described ZigBee communication module adopts serial communication to receive dimming control signal from described host computer 1, and described dimming control signal is transferred to LED driver module 3 with the serial communication form by wireless network, realize light modulation effect to led light source 4.

Among the utility model embodiment, adopt the wireless telecommunications between ZigBee communication module realization host computer and the LED driver module, realize controlled in wireless thus led light source.Thus, utilize that the ZigBee communication module is low in energy consumption, the advantage of applying flexible, favorable expandability, realization that can be flexible, easy is to the brightness adjustment control of led light source.

It should be noted that among the utility model embodiment that when carrying out serial communication, the communication pattern of the serial ports of the described ZigBee communication module of necessary assurance and the serial ports of single-chip microcomputer is consistent, such as baud rate, frame format etc.In programming to described single-chip microcomputer, must at first carry out initialization to its serial communication modular, its baud rate and frame format are provided with, also must guarantee simultaneously the input and output of its I/O mouth are set.

More than to the wireless drive system of a kind of light-emitting diode provided by the utility model, be described in detail, used specific case herein principle of the present utility model and execution mode are set forth, the explanation of above embodiment just is used for helping to understand method of the present utility model and core concept thereof; Simultaneously, for one of ordinary skill in the art, according to thought of the present utility model, part in specific embodiments and applications all can change.In sum, this description should not be construed as restriction of the present utility model.

Claims (7)

1. the wireless drive system of a light-emitting diode is characterized in that, described system comprises: host computer, wireless communication module and at least one paths of LEDs driver module; The described LED driver module in every road connects a led light source;
Described host computer is used for dimming control signal is sent to the designated LED driver module by wireless communication module with wireless;
Described LED driver module comprises: single-chip microcomputer, current sampling unit, LED driving power;
Described single-chip microcomputer is used to receive described dimming control signal, is converted into corresponding PWM waveform, exports the LED driving power to;
Described current sampling unit is used to receive the sample rate current that described led light source feeds back, and exports described LED driving power to;
Described LED driving power is used for the variation according to described PWM waveform, in conjunction with described sample rate current, adjusts the output to the drive current of led light source;
Described wireless communication module is used to realize the wireless telecommunications between host computer and the single-chip microcomputer.
2. the wireless drive system of light-emitting diode according to claim 1 is characterized in that, described LED driving power comprises: filter rectifier, PFC correcting circuit, double tube positive exciting circuit, constant-current control circuit;
Described filter rectifier is used for the input ac voltage that receives is carried out High frequency filter and rectification, and the output all-wave is to the PFC correcting circuit;
Described PFC correcting circuit is used for the all-wave that receives is carried out power factor correction, exports stable DC bus-bar voltage to described double tube positive exciting circuit;
Described constant-current control circuit, be used to receive described PWM waveform and sample rate current, determine the size of reference current according to described PWM waveform, after operational amplifier, the output constant current controls signal to described double tube positive exciting unit with described reference current and described sample rate current comparison;
Described double tube positive exciting unit, the DC bus-bar voltage that is used for being received from described PFC correcting circuit is transformed to the required voltage of the described led light source of driving; According to described constant current control signal, adjust the output to the drive current of described led light source.
3. the wireless drive system of light-emitting diode according to claim 1 is characterized in that, described wireless communication module is the ZigBee communication module;
Described ZigBee communication module comprises: telegon, at least one road router or terminal equipment; Wherein,
Described telegon links to each other with described host computer, is used to receive described dimming control signal, is sent to the router and/or the terminal equipment of host computer appointment with wireless;
Each described router and/or terminal equipment link to each other with a paths of LEDs driver module, and the dimming control signal that is used for receiving is sent to coupled LED driver module.
4. the wireless drive system of light-emitting diode according to claim 3 is characterized in that,
Described router directly links to each other with described LED driver module;
Or,
Described router links to each other with described LED driver module by subordinate equipment.
5. the wireless drive system of light-emitting diode according to claim 4 is characterized in that, described router connects at least one described subordinate equipment;
Described subordinate equipment is terminal equipment or router.
6. the wireless drive system of light-emitting diode according to claim 3 is characterized in that, described ZigBee communication module adopt serial interface communication mode realize with described single-chip microcomputer between communicate by letter.
7. the wireless drive system of light-emitting diode according to claim 3 is characterized in that, described ZigBee communication module adopt serial interface communication mode realize with described host computer between communicate by letter.
CN2010202119421U 2010-06-02 2010-06-02 Wireless drive system for LED (light emitting diode) CN201813591U (en)

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Cited By (8)

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CN101917793A (en) * 2010-06-02 2010-12-15 杭州奥能照明电器有限公司 Wireless driving system of light-emitting diode
CN102291901A (en) * 2011-09-23 2011-12-21 青岛海信电器股份有限公司 Driving circuit and driving device for light emitting diode (LED) array
CN102695334A (en) * 2012-05-11 2012-09-26 华南理工大学 Intelligent light modulation apparatus for LED concentrated direct current power supply system
CN103874300A (en) * 2014-03-31 2014-06-18 太仓电威光电有限公司 Method and system for adjusting parameters of output end of LED drive
CN103906322A (en) * 2014-03-26 2014-07-02 深圳市裕富照明有限公司 LED net lamp relay reinforcing control system
CN105044434A (en) * 2015-07-09 2015-11-11 深圳市明微电子股份有限公司 Current detection circuit, power switch chip and switching power source
CN105282896A (en) * 2014-05-27 2016-01-27 宁波高新区赛尔富电子有限公司 Power supply control circuit of LED lamp
CN105898926A (en) * 2016-05-30 2016-08-24 广东工业大学 LED (Light Emitting Diode) power system and LED driving device thereof

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101917793A (en) * 2010-06-02 2010-12-15 杭州奥能照明电器有限公司 Wireless driving system of light-emitting diode
CN101917793B (en) * 2010-06-02 2013-11-06 杭州奥能照明电器有限公司 Wireless driving system of light-emitting diode
CN102291901A (en) * 2011-09-23 2011-12-21 青岛海信电器股份有限公司 Driving circuit and driving device for light emitting diode (LED) array
CN102695334A (en) * 2012-05-11 2012-09-26 华南理工大学 Intelligent light modulation apparatus for LED concentrated direct current power supply system
CN103906322A (en) * 2014-03-26 2014-07-02 深圳市裕富照明有限公司 LED net lamp relay reinforcing control system
CN103874300A (en) * 2014-03-31 2014-06-18 太仓电威光电有限公司 Method and system for adjusting parameters of output end of LED drive
CN105282896A (en) * 2014-05-27 2016-01-27 宁波高新区赛尔富电子有限公司 Power supply control circuit of LED lamp
CN105044434A (en) * 2015-07-09 2015-11-11 深圳市明微电子股份有限公司 Current detection circuit, power switch chip and switching power source
CN105044434B (en) * 2015-07-09 2018-01-26 深圳市明微电子股份有限公司 A kind of current detection circuit, power switch chip and Switching Power Supply
CN105898926A (en) * 2016-05-30 2016-08-24 广东工业大学 LED (Light Emitting Diode) power system and LED driving device thereof

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