CN202005028U - Light-emitting diode (LED) wireless dimming control system - Google Patents

Abstract

The utility model provides an LED wireless dimming control system. The system includes: a host computer and at least one LED control module; the host computer at least includes: a micro-controller and a CDMA communication module connected with the micro-controller. The device is used to send the dimming control signal to the designated target LED control module through the CDMA wireless network through the CDMA communication module; the LED control module includes: a microcontroller, a CDMA communication module and a PWM module connected to the microcontroller, and a PWM module The connected LED drive module also includes a power module connected to the above-mentioned modules, and the LED control module is connected to at least one LED light source. After the CDMA communication module receives the dimming control radio frequency signal, the microcontroller controls the PWM according to the dimming control radio frequency signal. The module outputs a PWM waveform, and the PWM waveform adjusts the LED driver module to drive the LED light source connected to it to change its light parameters. The utility model can realize the purpose of wireless dimming control.

Description

A LED wireless dimming control system

technical field

The utility model relates to the technical field of LED dimming control, in particular to a wireless LED dimming control system.

Background technique

LED (Light Emitting Diode, light emitting diode) is a semiconductor device that can directly convert electricity into visible light. LEDs were first used in the display of indicator lights, numbers and text. With the advent of white LEDs, coupled with the advantages of low operating voltage, low power consumption, high luminous efficiency, and long life, LED light sources are more and more widely used in the field of general lighting. LED light source is a light-emitting device that is both energy-saving and environmentally friendly. Compared with traditional light sources, LED lights save 80% of electricity compared with incandescent lamps and 50% of electricity than fluorescent lamps.

The LEDs used for area lighting are composed of dozens of LEDs at least, and hundreds of thousands of LEDs at most. Usually, 2~10 LEDs are connected in series to form a lighting path, and each lighting branch is connected in parallel to form an array structure. For lighting LED arrays, it is necessary to control the LED current of each lighting branch, and the existing LED dimming control systems are generally wired control systems. In the existing wired control system for LED dimming, a large number of metal cables need to be arranged, so that the arrangement of the LED light source has great limitations, inflexibility, poor scalability, and cumbersome maintenance. At the same time, the aging and scrapping of metal cables will pollute the environment and affect human health.

There are also some wireless dimming control systems using ZigBee, Bluetooth and other technologies in the existing dimming control systems, but because they use the 2.4GHz public wireless communication frequency band, 2.4GHz is the common ISM frequency band of all countries, wireless LAN, Bluetooth, ZigBee and other wireless networks can work in the 2.4GHz frequency band. With the advancement of wireless technology, the number of wireless devices continues to increase, and the interference between wireless devices is becoming more and more serious. The existence of these same-frequency interferences will inevitably affect the control quality of the existing wireless control system for LED dimming, resulting in communication delays. Even interruption will affect the effect of dimming control of the lighting LED array, and network laying is required, resulting in high cost.

Contents of the invention

In order to overcome the deficiencies of the prior art, the utility model provides a LED wireless dimming control system based on the CDMA network for wireless management and control of the LED lighting sources distributed in the array, without the need for network laying, to achieve the lowest cost and the most functional powerful.

The embodiment of the utility model provides a LED wireless dimming control system, and the system includes: a host computer and at least one LED control module.

The upper computer at least includes: a microcontroller and a CDMA communication module connected to the microcontroller, and the microcontroller is used to send the dimming control signal to a designated target through the CDMA communication module via the CDMA wireless network LED control module;

The LED control module includes: a microcontroller, a CDMA communication module and a PWM (Pulse Width Modulation) module connected to the microcontroller, an LED driver module connected to the PWM (Pulse Width Modulation) module, and It includes a power module connected to the above-mentioned modules, the LED control module is connected to at least one LED light source, after the CDMA communication module receives the radio frequency signal for dimming control, the microcontroller controls the PWM (pulse width modulation) module according to the radio frequency signal for dimming control The PWM waveform is output, and the PWM waveform adjusts the LED driver module to drive the LED light source connected to it to change its light parameters.

The CDMA communication module is one of WCDMA communication module, CDMA2000 communication module and TD-SCDMA communication module.

Preferably, the host computer is a CDMA mobile phone, and there is no need to re-familiarize with the operation of the new host computer, which is convenient for users of the LED wireless dimming control system, and the existing CDMA mobile phone is used to reduce the design cost. Of course, if using Other forms of host computer also can realize the effect of the utility model.

Further, the CDMA mobile phone is one of WCDMA mobile phone, CDMA2000 mobile phone and TD-SCDMA mobile phone.

The dimming control signal sent by the host computer includes the identification information of the designated target and the control parameter information of the LED light source.

The light parameters include brightness, chromaticity or color temperature.

The LED control module is equipped with or connected with an electric storage unit to provide backup power.

The utility model provides a LED wireless dimming control system, which overcomes the shortcomings of the existing wireless dimming control system, such as large co-frequency interference between devices, large communication delay or even interruption, and the need for network laying and high design costs. . The upper computer uses the existing CDMA network to send the dimming control signal to the LED control module to realize wireless management and control of the LED lighting sources distributed in the array, without the need for network laying, to achieve lower cost and stronger functionsMore Sample.

Description of drawings

Fig. 1 is a structure diagram of an LED wireless dimming control system of the present invention.

Detailed ways

In order to make the above purpose, features and advantages of the utility model more obvious and easy to understand, the utility model will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

Referring to FIG. 1 , it is a structural diagram of an LED wireless dimming control system according to an embodiment of the present invention. The system includes: a host computer 10, at least one LED control module 20;

The host computer at least includes: a microcontroller 11 and a CDMA communication module 12 connected to the microcontroller, the microcontroller 11 is used to pass the dimming control signal through the CDMA communication module 12 via CDMA wireless The network sends to the LED control module 20 of the designated target;

The LED control module includes: a microcontroller 21, a CDMA communication module 22 connected to the microcontroller 21, a PWM (pulse width modulation) module 23, and a The LED driver module 24 also includes a power supply module 25 connected to the above-mentioned modules. The LED control module is connected to at least one LED light source 30. After the CDMA communication module 22 receives the dimming control radio frequency signal, the microcontroller controls the radio frequency according to the dimming. The signal controls the PWM (Pulse Width Modulation) module 23 to output a PWM waveform, and the PWM waveform adjusts the LED driving module 24 to drive the LED light source 30 connected thereto to change its light parameters.

Described CDMA communication module 22 is a kind of in WCDMA communication module, CDMA 2000 communication module and TD-SCDMA communication module.

Preferably, the host computer 10 is a CDMA mobile phone, and there is no need to re-familiarize with the operation of the new host computer, which is convenient for users of the LED wireless dimming control system, and the existing CDMA mobile phone is used to reduce the design cost. Of course, if Adopt other forms of upper computer, also can realize the effect of the utility model.

Further, the CDMA mobile phone is one of WCDMA mobile phone, CDMA2000 mobile phone and TD-SCDMA mobile phone.

The dimming control signal sent by the host computer 10 includes identification information of the specified target and control parameter information of the LED light source.

The light parameters include brightness, chromaticity or color temperature.

The LED control module 20 is internally or externally connected with an electric storage unit to provide backup power.

The utility model provides a LED wireless dimming control system, which overcomes the shortcomings of the existing wireless dimming control system, such as large co-frequency interference between devices, large communication delay or even interruption, and the need for network laying and high design costs. . The host computer uses the existing CDMA network to send dimming control signals to the LED control module to realize wireless management and control of the LED lighting sources distributed in the array, without the need for network laying, lower hardware costs, and various functions.

Although the utility model has been specifically shown and described in conjunction with the preferred embodiment, those skilled in the art should understand that, without departing from the spirit and scope of the utility model defined by the appended claims, in terms of form and details, Various changes can be made to the utility model, all of which are within the protection scope of the utility model.

Claims (5)

1. a LED Wireless Light modulating control system is characterized in that: comprising: host computer, at least one paths of LEDs control module;

Described host computer comprises at least: a microcontroller and the CDMA communication module that is connected with described microcontroller, described microcontroller are used for dimming control signal is sent to through the cdma wireless network by described CDMA communication module the LED control module of intended target;

Described LED control module comprises: microcontroller, the CDMA communication module that is connected with described microcontroller and PWM module, the LED driver module that is connected with described PWM module, also comprise the power module that links to each other with above-mentioned each module, described LED control module connects at least one paths of LEDs light source, after the CDMA communication module receives the brightness adjustment control radiofrequency signal, microcontroller is according to brightness adjustment control radiofrequency signal control PWM module output PWM waveform, and PWM waveform adjustment LED driver module drives and is attached thereto the led light source that connects and changes its light parameter.

2. a kind of LED Wireless Light modulating control system according to claim 1 is characterized in that, described CDMA communication module is a kind of in WCDMA communication module, cdma2000 communication module and the TD-SCDMA communication module.

3. a kind of LED Wireless Light modulating control system according to claim 1 is characterized in that described host computer is the CDMA mobile phone.

4. a kind of LED Wireless Light modulating control system according to claim 3 is characterized in that, described CDMA mobile phone is a kind of in WCDMA mobile phone, cdma2000 mobile phone and the TD-SCDMA mobile phone.

5. a kind of LED Wireless Light modulating control system according to claim 1 is characterized in that, in the described LED control module if an external electricity accumulating unit, so that stand-by power supply to be provided.

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