CN210609804U - Wireless LED control device - Google Patents
Wireless LED control device Download PDFInfo
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- CN210609804U CN210609804U CN201920616761.8U CN201920616761U CN210609804U CN 210609804 U CN210609804 U CN 210609804U CN 201920616761 U CN201920616761 U CN 201920616761U CN 210609804 U CN210609804 U CN 210609804U
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Abstract
The utility model relates to the field of tunnel lighting and control, and discloses a wireless LED control device, which is convenient to use and low in implementation cost, and can reduce the installation volume of the device in the use process and reduce the maintenance difficulty of the construction in the tunnel; the utility model discloses a device includes the current detection module, link to each other with the current detection module and be used for carrying out the processing module of preliminary treatment to input current, the PWM control module that links to each other with processing module, the switch transformer module that links to each other with PWM control module, first rectification filtering unit and the second rectification filtering unit that links to each other with switch transformer module, the relay module that links to each other with first rectification filtering unit, the controller that links to each other with second rectification filtering unit, and the loRa wireless module that links to each other with the controller.
Description
Technical Field
The utility model relates to a tunnel illumination and control field especially relates to a wireless LED controlling means.
Background
With the rapid development of the expressway and the acceleration of the urban construction in China, the tunnel illumination and the urban road illumination are increased rapidly, and the LED lamp is widely applied to the tunnel illumination and the urban road illumination due to the superior characteristics of green, energy conservation, dimmability, long service life and the like. The LoRa is a long-distance wireless transmission technology based on a spread spectrum technology, has the characteristics of long transmission distance, low power consumption (long service life of a battery), multiple nodes, low cost, strong anti-interference capability and the like, is very suitable for the application of field environments such as tunnel and town road lighting control, and therefore, in recent years, the LoRa wireless network control technology is gradually applied to the tunnel and town road to realize LED lighting control. However, in the conventional LoRa wireless network LED lighting control system, the LED driving power supply and the LoRa wireless control module are independent from each other, the LoRa wireless control module receives a command such as dimming sent by a system host forwarded by a coordinator in the network through the LoRa wireless network, converts the dimming command into a PWM or 0-10V dimming signal and outputs the PWM or 0-10V dimming signal to the dimming input end of the LED lamp driving power supply, and the LED lamp driving power supply automatically adjusts the lamp power according to the input dimming signal to realize lighting brightness control. Between the LoRa wireless control module and the LED lamp driving power supply, the wiring of alternating current 220V working power supply, PWM or 0-10V dimming signals exists, in order to guarantee the reliability and the service life of the equipment in the long-term operation process of the tunnel, the field connection of the wiring needs to adopt soldering tin welding, and moisture-proof and corrosion-proof measures are adopted. Therefore, when the tunnel is constructed and maintained, the construction and maintenance difficulty is high, a large amount of manpower and material resources are needed, the two devices are independently installed, the occupied space is large, and the manufacturing cost is high.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a wireless LED controlling means, the utility model discloses can solve foretell one or two at least problems.
In order to achieve the above object, the utility model provides a wireless LED control device, include:
the device comprises a current detection module, a processing module connected with the current detection module and used for preprocessing input current, a PWM control module connected with the processing module, a switch transformer module connected with the PWM control module, a first rectification filter unit and a second rectification filter unit connected with the switch transformer module, a relay module connected with the first rectification filter unit, a controller connected with the second rectification filter unit and a LoRa wireless module connected with the controller;
the switch transformer module is combined with the PWM control module to convert direct current into alternating current, and the first rectification filtering unit is used for filtering the alternating current and converting the filtered alternating current into direct current for driving an LED lamp; the second rectifying and filtering unit is used for converting the alternating current into direct current to supply power to the controller.
Preferably, the switching transformation module includes a primary winding, a secondary winding, a first auxiliary winding, and a second auxiliary winding, the secondary winding is connected to the primary winding, the primary winding is connected to the PWM control module, an output end of the secondary winding is connected to the first rectifying and filtering unit, an output end of the first auxiliary winding is connected to the second rectifying and filtering unit, and an output end of the second auxiliary winding is connected to the PWM control module.
Preferably, the control device further includes a voltage stabilizing module connected to the second rectifying and filtering unit, a voltage converting module connected to the voltage stabilizing module, and a digital-to-analog converting module connected to an output end of the voltage converting module, where an output end of the voltage converting module is further connected to the controller and the LoRa wireless module.
Preferably, the control device further comprises a feedback control module connected to the digital-to-analog conversion module, and a photoelectric isolation module connected to the feedback control module.
Preferably, the processing module comprises a lightning protection unit and an EMI unit connected to the lightning protection unit.
Preferably, the control device further comprises a primary rectifying unit connected with the processing module, and the primary rectifying unit is used for rectifying the current pretreated by the processing module.
Preferably, the control device further comprises a power correction module connected to the primary rectifying unit, and the power correction module is configured to correct a power factor according to a preset value.
The utility model discloses following beneficial effect has:
the utility model provides a wireless LED control device, including current detection module, the processing module who is used for carrying out the preliminary treatment to input current that links to each other with current detection module, the PWM control module who links to each other with processing module, the switch transformer module who links to each other with PWM control module, the first rectification filter unit and the second rectification filter unit that link to each other with switch transformer module, the relay module who links to each other with first rectification filter unit, the controller that links to each other with second rectification filter unit, and with the loRa wireless module that the controller links to each other; the first rectifying and filtering unit is used for filtering the alternating current and converting the filtered alternating current into direct current for driving an LED lamp; the second rectifying and filtering unit is used for converting the alternating current into direct current to supply power to the controller; the single lamp controller and the LED driving power supply are integrally designed, the installation volume of the device in the using process is reduced, wiring and installation are facilitated, the maintenance difficulty of construction in a tunnel is reduced, the use is convenient, and the implementation cost is low.
The present invention will be described in further detail below with reference to the accompanying drawings.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this application, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification. In the drawings:
fig. 1 is a schematic structural diagram of a wireless LED control device according to a preferred embodiment of the present invention;
fig. 2 is a circuit diagram of a current detection module according to a preferred embodiment of the present invention;
fig. 3 is a circuit diagram of the PWM control module and the switching transformer module according to the preferred embodiment of the present invention.
Reference numerals:
1. a current detection module; 2. a PWM control module; 3. a switching transformer module; 4. a first rectifying and filtering unit; 5. a second rectifying and filtering unit; 6. a controller; 7. LoRa wireless module.
Detailed Description
The embodiments of the invention will be described in detail below with reference to the drawings, but the invention can be implemented in many different ways as defined and covered by the claims.
Unless otherwise defined, all terms of art used hereinafter have the same meaning as commonly understood by one of ordinary skill in the art. The use of "first," "second," and similar terms in the description and in the claims does not indicate any order, quantity, or importance, but rather the intention is merely to facilitate a distinction between corresponding parts. Also, the use of the terms "a" or "an" and the like do not denote a limitation of quantity, but rather denote the presence of at least one. The terms "connected" or "coupled" and the like are not restricted to physical or mechanical connections, but may include electrical connections, whether direct or indirect.
Example 1
As shown in fig. 1 below, the present embodiment provides a wireless LED control device, which includes:
the device comprises a current detection module 1, a processing module connected with the current detection module and used for preprocessing input current, a PWM control module 2 connected with the processing module, a switch transformer module 3 connected with the PWM control module, a first rectification filter unit 4 and a second rectification filter unit 5 connected with the switch transformer module, a relay module connected with the first rectification filter unit, a controller 6 connected with the second rectification filter unit and a LoRa wireless module 7 connected with the controller;
the switch transformer module is used for converting direct current into alternating current in combination with the PWM control module, and the first rectification filtering unit is used for filtering the alternating current and converting the alternating current into direct current for driving the LED lamp; the second rectifying and filtering unit is used for converting the alternating current into direct current to supply power to the controller.
The wireless LED control device has the advantages that the single lamp controller and the LED driving power supply are integrally designed, the installation volume of the device in the using process is reduced, wiring and installation are facilitated, the use is convenient, and the implementation cost is low.
As a preferred implementation manner of this embodiment, the switching transformation module includes a primary winding, a secondary winding, a first auxiliary winding, and a second auxiliary winding, where the secondary winding is connected to the primary winding, the primary winding is connected to the PWM control module, an output end of the secondary winding is connected to the first rectifying and filtering unit, an output end of the first auxiliary winding is connected to the second rectifying and filtering unit, and an output end of the second auxiliary winding is connected to the PWM control module.
As a preferred implementation manner of this embodiment, the control device further includes a voltage stabilizing module connected to the second rectifying and filtering unit, a voltage converting module connected to the voltage stabilizing module, and a digital-to-analog converting module connected to an output end of the voltage converting module, where an output end of the voltage converting module is further connected to the controller and the LoRa wireless module.
As a preferred embodiment of this embodiment, the control device further includes a feedback control module connected to the digital-to-analog conversion module, and a photoelectric isolation module connected to the feedback control module, where in this embodiment, the feedback control module is configured to detect an output current of the LED control device, and obtain a feedback signal for realizing constant current output by combining with a dimming signal output from the controller. The photoelectric isolation module is used for transmitting a feedback control signal of the feedback control module to the PWM control module.
As a preferred embodiment of this embodiment, the control device further includes a primary rectifying unit connected to the processing module, and the primary rectifying unit is configured to rectify the current pretreated by the processing module.
As a preferred embodiment of this embodiment, the control device further includes a power correction module connected to the primary rectifying unit, and the power correction module is configured to correct a power factor of the current according to a preset value.
In specific operation, firstly, the ac 220V commercial power is connected to the input terminal of the control device, and in this embodiment, the processing module includes a lightning protection unit and an EMI unit connected to the lightning protection unit. The lightning protection unit is used for preventing overvoltage generated by lightning from damaging equipment, and the EMI unit is used for inhibiting electromagnetic interference. Namely, alternating current 220V commercial power is transmitted to the lightning protection unit, the EMI unit and the primary rectifying unit through the current detection module to be rectified and filtered to be converted into stable direct current, and the direct current is further subjected to power factor correction through the power correction module, so that the LED control device has a high power factor, the reactive power in a power grid can be reduced, the harmonic pollution is reduced, and the power supply quality of the power grid is improved. In this embodiment, the power correction module is an active power factor correction module. The direct current subjected to power correction is combined with flyback control of the PWM control module, alternating current is obtained in a secondary winding, a first auxiliary winding and a second auxiliary winding of the switch transformer module, and further the alternating current of the secondary winding is converted into direct current through a first rectifying and filtering unit (a secondary winding rectifying and filtering unit) to drive the LED lamp; the alternating current of first auxiliary winding is converted into the direct current through second rectification filtering unit, and this direct current obtains 12V direct current regulated voltage through the linear voltage stabilizing module of 12V, and this 12V direct current regulated voltage is used for supplying power for the relay coil, still is used for changing 3.3V module output direct current 3.3V voltage through 12V, supplies power with loRa wireless module and digital-to-analog conversion module and the controller that the output of voltage conversion module links to each other respectively.
Preferably, in this embodiment, the chip model adopted by the power correction module is OB6561, the model adopted by the PWM control module is OB2203, the model adopted by the feedback control module is AP4310, and the controller adopts an STM8S003F3P6 single chip microcomputer, and these devices are direct existing outsourcing components and are not described herein. The present invention is not limited to this embodiment, and other types of devices may be used to achieve the same purpose.
Specifically, a circuit diagram of the current detection module in this embodiment is shown in fig. 2 below, in fig. 2, an input current is detected through a transformer, L _1 and L _2 are measured lines, and AIN2 is connected to the controller. And judging whether the lamp fails or not according to the difference between the lamp failure and the current detected in normal.
In addition, as shown in fig. 3, the rectified and filtered direct current Ui is converted into alternating current to realize voltage reduction, and the alternating current is output to Uo1 and Uo2, the primary side and the secondary side can be isolated through the transformer, and the Q2 is controlled through U2 to realize secondary side output current regulation. Wherein the VCC will power the power factor correction module; ui comes from the filtering unit; uo1 is used for secondary winding rectifying and filtering; uo2 is used for auxiliary winding rectifying filtering.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (7)
1. A wireless LED control device, comprising:
the device comprises a current detection module, a processing module connected with the current detection module and used for preprocessing input current, a PWM control module connected with the processing module, a switch transformer module connected with the PWM control module, a first rectification filter unit and a second rectification filter unit connected with the switch transformer module, a relay module connected with the first rectification filter unit, a controller connected with the second rectification filter unit and a LoRa wireless module connected with the controller;
the switch transformer module is used for converting direct current into alternating current in combination with the PWM control module, and the first rectifying and filtering unit is used for filtering the alternating current and then converting the filtered alternating current into direct current for driving an LED lamp; the second rectifying and filtering unit is used for converting the alternating current into direct current to supply power to the controller.
2. The wireless LED control device according to claim 1, wherein the switching transformer module comprises a primary winding, a secondary winding, a first auxiliary winding and a second auxiliary winding, the secondary winding is respectively connected with the primary winding, the primary winding is connected with the PWM control module, an output end of the secondary winding is connected with the first rectifying and filtering unit, an output end of the first auxiliary winding is connected with the second rectifying and filtering unit, and an output end of the second auxiliary winding is connected with the PWM control module.
3. The wireless LED control device of claim 1, further comprising a voltage stabilizing module connected to the second rectifying and filtering unit, a voltage converting module connected to the voltage stabilizing module, and a digital-to-analog converting module connected to an output terminal of the voltage converting module, wherein an output terminal of the voltage converting module is further connected to the controller and the LoRa wireless module.
4. The wireless LED control device of claim 3, further comprising a feedback control module connected to the digital-to-analog conversion module, and a photo-isolation module connected to the feedback control module.
5. The wireless LED control device of claim 1, wherein the processing module comprises a lightning protection unit and an EMI unit coupled to the lightning protection unit.
6. The wireless LED control device of claim 1, further comprising a primary rectifying unit connected to the processing module, the primary rectifying unit configured to rectify current pre-processed by the processing module.
7. The wireless LED control device of claim 6, further comprising a power correction module coupled to said primary rectifier unit, said power correction module configured to correct a power factor based on a predetermined value.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920616761.8U CN210609804U (en) | 2019-04-30 | 2019-04-30 | Wireless LED control device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201920616761.8U CN210609804U (en) | 2019-04-30 | 2019-04-30 | Wireless LED control device |
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| CN210609804U true CN210609804U (en) | 2020-05-22 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110177409A (en) * | 2019-04-30 | 2019-08-27 | 湖南沛科交通工程技术股份有限公司 | A kind of wireless LED control device and its control method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110177409A (en) * | 2019-04-30 | 2019-08-27 | 湖南沛科交通工程技术股份有限公司 | A kind of wireless LED control device and its control method |
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Address after: No. 13008, building 1-B, Zhongnan headquarters base, No. 688, Section 2, Wanjiali South Road, Yuhua District, Changsha City, Hunan Province, 410000 Patentee after: Zhongjin Peike Construction Co.,Ltd. Address before: No. 13008, building 1-B, Zhongnan headquarters base, No. 688, Section 2, Wanjiali South Road, Yuhua District, Changsha City, Hunan Province, 410016 Patentee before: HUNAN PEAK TRAFFIC ENGINEERING TECHNOLOGY Co.,Ltd. |
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