CN219555187U

CN219555187U - LED driving power supply and system integrating high-speed power line carrier communication and control functions

Info

Publication number: CN219555187U
Application number: CN202223433949.XU
Authority: CN
Inventors: 毛智伟; 陈敏
Original assignee: Zhejiang Leipeide Technology Ltd
Current assignee: Zhejiang Leipeide Technology Ltd
Priority date: 2022-12-21
Filing date: 2022-12-21
Publication date: 2023-08-18
Anticipated expiration: 2032-12-21

Abstract

The utility model relates to an LED power supply technology, and aims to provide an LED driving power supply and system integrating high-speed power line carrier communication and control functions. The LED driving power supply product is provided with an electric energy metering circuit, an HPLC communication circuit and a conventional LED driving power supply in a shell; the alternating current input of the LED driving power supply is connected to the filtering rectification circuit and the electric energy metering circuit at the same time, and the filtering rectification circuit and the electric energy metering circuit are sequentially connected with the high-speed power line carrier communication circuit and the switching control and PWM dimming circuit in the LED driving power supply; the switch control and PWM dimming circuit has two paths of outputs which are respectively connected to the DC-DC control circuit and the output setting and feedback control circuit; the auxiliary power supply supplies power to all the power utilization units at the same time. The utility model can internally connect the electric energy metering circuit, the HPLC communication circuit and the LED driving power supply, and share one shell and internal power supply, thus the whole manufacturing cost is low; the wiring is simple, the processing flow can be simplified, and the installation and maintenance are also convenient.

Description

LED driving power supply and system integrating high-speed power line carrier communication and control functions

Technical Field

The utility model relates to an LED power supply technology, in particular to an LED driving power supply and system integrating high-speed power line carrier communication and control functions.

Background

The high-power LED driving power supply (also called an LED driver) commonly used for street lamps and landscape lamps in the market at present is mostly a constant-current output power supply, and also has a dimming function, such as dimming through a 0-10V dimming interface and a PWM dimming interface. However, none of the LED driving power supplies is an intelligent LED driving power supply, which cannot be controlled remotely, and the working state of the LED driving power supply cannot be monitored in real time, so that the requirements of an intelligent light control system or an intelligent street lamp control system are not satisfied.

There are also many ways to realize remote control of LED street lamps or landscape lamps in the market by using a single lamp controller plus a dimmable LED driver combination (as shown in fig. 1), but there are many problems:

1. two product components, namely a single lamp controller and an LED driver, are required to be used simultaneously, and are provided with independent shells and connecting wires, circuits and control are arranged in the two product components, so that the cost is high.

2. The combination mode is complex in wiring. The utility power 220Vac is usually required to be input to be connected with a single lamp controller, the output of a relay in the single lamp controller is connected with an LED driving power supply, the output of the single lamp controller is connected with a dimming port of the LED driving power supply, and the output of the LED driving power supply is connected with an LED module, and at least 4 groups of wires are required to be connected.

3. The lamp installation space is limited, and the single lamp controller and the LED driving power supply are used simultaneously, so that the installation is difficult. Meanwhile, the wires are more, and the space occupied by the wires and the plugs is more.

4. The reliability and maintainability are poor, the problems caused by poor wiring, wrong wiring, poor joint waterproof and the like are easy to occur, if the damage is also difficult to judge whether the wiring is poor, or the controller is damaged or the LED driving power supply is damaged, and the problems need to be removed one by one.

5. The power line carrier communication module adopted by the traditional single lamp controller is low in speed, low in transmission speed, and long in communication time, and the general speed is 2.4k bps.

6. The single lamp controller is used for switching the LED driving power supply through the relay, and because the current is generally larger when the LED driver is turned on, particularly when the LED driver is frequently switched on, the relay is easy to impact, the relay is damaged, and the reliability is low.

Accordingly, there is a need for an improved LED driving power supply technology that addresses the above-described problems.

Disclosure of Invention

The utility model aims to solve the technical problem of overcoming the defects in the prior art and providing an LED driving power supply and system integrating high-speed power line carrier communication and monitoring functions.

In order to solve the technical problems, the utility model adopts the following solution:

the LED driving power supply comprises a shell, wherein the shell is internally provided with the LED driving power supply, an electric energy metering circuit and a high-speed power line carrier (HPLC) communication circuit; in the LED driving power supply, a filtering rectification circuit is provided with an input end connected with alternating current, and the filtering rectification circuit is sequentially connected with a power factor correction circuit, a DC-DC conversion circuit and a filtering constant current output circuit; the filtering constant current output circuit is provided with two paths of outputs, one path of the output is used as the direct current output of the LED driving power supply, and the other path of the output is connected to the output setting and feedback control circuit; the output setting and feedback control circuit is connected to the DC-DC control circuit, which is connected to the DC-DC conversion circuit; the switch control and PWM dimming circuit has two paths of outputs which are respectively connected to the DC-DC control circuit and the output setting and feedback control circuit; the auxiliary power supply source simultaneously supplies power to the power factor correction circuit and the DC-DC control circuit;

the alternating current input of the LED driving power supply is also connected to an electric energy metering circuit, and the electric energy metering circuit is sequentially connected with a high-speed power line carrier communication circuit and a switch control and PWM dimming circuit; the auxiliary power supply in the LED driving power supply is connected to the electric energy metering circuit and the high-speed power line carrier communication circuit at the same time so as to realize power supply.

As an improved scheme, the electric energy metering circuit is internally provided with a universal asynchronous receiving and transmitting transmitter, and the output end of the electric energy metering circuit is connected to the high-speed power line carrier communication circuit.

As an improvement, the DC-DC conversion circuit is a flyback DC-DC conversion circuit or an LLC resonant DC-DC conversion circuit.

As an improved scheme, the high-speed power line carrier (HPLC) communication circuit comprises a high-speed Micro Control Unit (MCU) and a modem circuit for power line communication.

As an improvement, the input end of the filtering rectifying circuit is directly connected with a power line for inputting alternating current, or a connecting terminal for connecting the power line is arranged at the input end of the filtering rectifying circuit; one output end of the filtering constant current output circuit is directly connected with a power line for outputting direct current, or a connecting terminal for connecting the power line is arranged at the output end.

The utility model further provides a system capable of carrying out integrated high-speed power line carrier communication and control on the LED driving power supply, which comprises a plurality of groups of the LED driving power supplies; each group comprises a high-speed power line carrier centralized controller and a plurality of LED driving power supplies, and each LED driving power supply is respectively connected with a corresponding LED light source module; the LED driving power supplies in each group are connected to the high-speed power line carrier centralized controller in the group; each high-speed power line carrier centralized controller is connected to the cloud server through a wireless communication mode so as to realize signal transmission.

As an improved scheme, the system further comprises a mobile terminal connected to the cloud server in a wireless communication mode, wherein the mobile terminal is a PC (personal computer), a tablet personal computer or a mobile phone.

Compared with the prior art, the utility model has the technical effects that:

1. the product of the utility model can be internally connected with the electric energy metering circuit, the HPLC communication circuit and the LED driving power supply, and shares one shell and internal power supply, thus the whole manufacturing cost is low.

2. The LED module has the advantages of small volume, simple wiring, simplified processing flow and convenient installation and maintenance, and only needs to be connected with 2 groups of wires, namely the input terminal is connected with 220Vac and the output terminal is connected with the LED module.

3. The utility model integrates high-speed power line carrier communication, the communication speed can reach 200k-10 Mbps, which is more than 100 times of the low-speed power line carrier communication speed; the communication speed is high, and the delay is in millisecond level; the highest attenuation resistance can reach more than 100dB, and various complex application scenes are satisfied.

4. The utility model realizes the switch control by enabling the internal DC-DC control circuit, and does not switch through a relay; therefore, the reliability is good, and the problem of current surge during restarting is avoided.

5. The dimming control in the utility model is realized by connecting output setting and feedback control circuits through an optical coupler, and the primary side and the secondary side are safely isolated. Even if the primary side control fails, the basic setting circuit continues to work, so that the maximum output power can be ensured, and the normal output of the equipment is ensured.

6. The utility model adopts power line communication, so that no additional communication line is needed, and the installation is convenient. And the antenna is not required to be installed like other wireless communication equipment, so that communication signals are not blocked by rooms and are not affected by geographical environment.

7. The product of the utility model can be further combined with an HPLC centralized controller to form an integrated HPLC communication and control system. The system can further realize the global monitoring of the LED driving power supply information and the power utilization condition, and grasp the fault condition in real time.

Drawings

Fig. 1 is a diagram of a conventional single lamp controller plus LED driver combination.

Fig. 2 is a schematic diagram of an LED driver according to the present utility model.

FIG. 3 is a schematic diagram of an LED driver integrated with high-speed power line carrier communication and control

Fig. 4 is a schematic diagram of a cloud server based HPLC communication and control system.

Description of the embodiments

It should be noted that the present utility model relates to a power control technology. In the implementation of the present utility model, the application of the functional module of the embedded software may be involved. The applicant believes that the software programming skills of one skilled in the art would be fully available to practice the present utility model in conjunction with the prior art, as the application document is read, with an accurate understanding of the principles and objects of the present utility model. The foregoing functional modules include, but are not limited to: electric energy metering circuits, high-speed power line carrier (HPLC) communication circuits, etc., all of which are referred to herein are within the scope of the present utility model.

For example, the electric energy metering circuit can refer to the implementation mode of documents such as China patent application CN217846454U, CN217846437U, CN217282335U, CN114113732A, CN216771905U and the like. The HPLC communication circuit can refer to the implementation modes of the documents such as Chinese patent application CN114142892A, CN114361886A, CN114614565A, CN217721191U, CN217363236U, CN115168158A, CN115442947A and the like. The above documents all belong to the publications in the field of electric energy metering or HPLC communication, and provide the implementation schemes of the functional modules from various angles, thus belonging to the prior art which is well known to the person skilled in the art. Therefore, the implementation manner of calculation and control of each functional module, the software implementation process and the like of the present utility model are not necessarily described in the present utility model. In addition, the utility model is innovative in that the functional modules which are originally used independently are organically combined and connected, and the implementation process of the related calculation or control method does not belong to the scope of protection of the utility model.

In addition, other circuits (modules) in the LED driving power supply are all mature technologies. For example, in the switch control and PWM dimming circuit, the switch control circuit may refer to the implementation of documents such as chinese patent application CN115397065A, CN115134970A, CN115113255A, CN115378246A, CN115453934A, CN115459342a, and the PWM dimming circuit may refer to the implementation of documents such as chinese patent application CN114096033A, CN114423117A, CN217591150U, CN217643813U, CN 217904711U. In the output setting and feedback control circuit, the output setting circuit can refer to the implementation modes of documents such as China patent application CN204168543U, CN104270862A, CN107528485A, CN109509449A, CN210225230U, CN115051581A, and the feedback control circuit can refer to the implementation modes of documents such as China patent application CN114845438A, CN113382500A, CN114449698A, CN114980414A, CN 113948028A. The above documents all belong to the open literature in the field of LED light control, and the realization scheme of each functional module is provided from various angles, and a person skilled in the art can refer to the implementation scheme and then construct the circuit by himself or directly purchase and assemble the circuit elements in the market.

Those skilled in the art will appreciate that the utility model provides a system and its individual devices, modules, units, etc. that can be implemented fully by logic programming of method steps to perform the same function in the form of logic gates, switches, application specific integrated circuits, programmable logic controllers, embedded microcontrollers, etc., except for implementing a portion of the system and its individual devices, modules, units, etc. as a purely computer readable program code. Therefore, the system and various devices, modules and units thereof provided by the utility model can be regarded as a hardware component, and the devices, modules and units for realizing various functions included in the system can also be regarded as structures in the hardware component; means, modules, and units for implementing the various functions may also be considered as either software modules for implementing the methods or structures within hardware components.

It is further noted that relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.

The following describes in detail the embodiments of the present utility model with reference to the drawings.

As shown in fig. 2, the LED driving power supply integrating the high-speed power line carrier communication and control functions of the present utility model mainly includes four circuit structures organically combined together inside its housing.

The first part is a conventional LED driving power supply and comprises a filtering rectifying circuit, a power factor correcting circuit, an auxiliary low-voltage power supply, a DC-DC conversion circuit, a filtering constant-current output circuit, an output setting and feedback control circuit, a DC-DC control circuit and the like. In the LED driving power supply, a filtering rectification circuit is provided with an input end connected with alternating current, and the filtering rectification circuit is sequentially connected with a power factor correction circuit, a DC-DC conversion circuit and a filtering constant current output circuit. The filtering constant current output circuit has two paths of outputs, one path is used as the direct current output of the LED driving power supply, and the other path is connected to the output setting and feedback control circuit. The output setting and feedback control circuit is connected to a DC-DC control circuit, which is connected to a DC-DC conversion circuit. The switch control and PWM dimming circuit has two paths of outputs which are respectively connected to the DC-DC control circuit and the output setting and feedback control circuit. The auxiliary power supply supplies power to the power factor correction circuit and the DC-DC control circuit at the same time.

The 220V alternating current input from the outside is changed into direct current voltage after passing through the filtering rectifying circuit and the power factor correcting circuit, the direct current voltage is converted into low-voltage direct current voltage which can be used by the LED module through the DC-DC conversion circuit, the output current and the voltage are controlled by the DC-DC control circuit, the output setting and feedback control circuit, and finally the direct current is output to the LED module through the filtering constant current output circuit to meet the power supply requirement of the LED module. Compared with a common LED driving power supply, the auxiliary power supply provided by the utility model needs to be independently designed, and meanwhile, the output power is larger (the voltage range can be between 3.3 and 15V, and the power range can be between 1 and 3W), so that the requirements of simultaneously providing electric energy for a power factor correction circuit, a DC-DC control circuit, an electric energy metering circuit and an HPLC communication circuit are met. The DC-DC conversion circuit may be a flyback DC-DC conversion circuit or an LLC resonant DC-DC conversion circuit. The input end of the filtering rectifying circuit is directly connected with a power line for inputting alternating current, or a wiring terminal for connecting the power line is arranged at the input end of the filtering rectifying circuit; one output end of the filtering constant current output circuit is directly connected with a power line for outputting direct current, or a connecting terminal for connecting the power line is arranged at the output end.

The second part is an electric energy metering circuit, which samples information such as input power, input voltage, input current, voltage zero crossing point and the like of the input 220V alternating current, and can monitor the working state of the LED driving power supply to meter the electric energy; and then the acquired information is sent to a high-speed power line carrier (HPLC) communication circuit through a built-in Universal Asynchronous Receiver Transmitter (UART).

The third part is a high-speed power line carrier communication circuit (called as HPLC communication circuit for short) and comprises a power line communication modem circuit and a high-speed Micro Control Unit (MCU). The circuit is used for processing tasks related to external communication, and can realize the functions of mainly communicating with the electric energy metering circuit, receiving the electric parameter information of the LED driver, formulating a switch and a dimming control target according to the information and forwarding the switch and the dimming control target to the switch control and PWM dimming circuit.

If the HPLC communication circuit participates in networking, the following functions can be further realized: 1. the method comprises the steps of communicating with a superior high-speed power line carrier centralized controller (HPLC centralized controller) through an input power line; and transmitting the information of the current LED driving power supply to the HPLC centralized controller, or receiving a working instruction of the upper-level HPLC centralized controller, and transmitting the working instruction to a switch control and PWM dimming circuit to be controlled. 2. Realizing a communication relay function; when a single LED driver is far away from the upper-level HPLC centralized controller, the information can be gradually spread outwards through the adjacent LED drivers (by utilizing the HPLC communication circuit thereof), so that the information gradually reaches the proper HPLC centralized controller.

The fourth part is a switch control and PWM dimming circuit. After the circuit receives information through the HPLC communication circuit, the LED driving power supply is controlled according to the electrical parameter information obtained through testing and a control instruction from a superior level. Wherein the switch control circuit applies a switch signal to the DC-DC control circuit to perform switch control. Such as a timing switch function, adjusting input/output power as required, protecting when the input voltage is abnormal, over-temperature protecting when the temperature is too high, etc. The switch control circuit controls the LED driver by enabling the DC-DC control circuit in the LED power supply to realize switch control, and does not switch through a relay; therefore, the reliability is good, and the problem of input current impact in the switching process is avoided. And the PWM dimming circuit applies PWM signals to the output setting and feedback control circuit through the optocoupler to regulate the magnitude of the output current. Because the primary side and the secondary side are safely isolated, even if the primary side control fails, the basic setting circuit still works, the maximum output power can be ensured, and the normal output of the equipment is ensured.

Based on the circuit structure, after the alternating current input of the LED driving power supply is connected with the electric energy metering circuit, the alternating current input is sequentially connected with the high-speed power line carrier communication circuit and the switch control and PWM dimming circuit; an auxiliary low-voltage power supply in the LED driving power supply simultaneously supplies power to the electric energy metering circuit and the high-speed power line carrier communication circuit.

Based on the LED driving power supply product provided by the utility model, a system capable of integrating high-speed power line carrier communication and control on the LED driving power supply can be built by combining a high-speed power line carrier centralized controller (HPLC centralized controller) with a cloud server. The system comprises a plurality of groups of LED driving power supplies; each group comprises an HPLC centralized controller and a plurality of LED driving power supplies, and each LED driving power supply is respectively connected with a corresponding LED light source module; the LED driving power supply in each group is connected to the HPLC centralized controller in the group; each HPLC centralized controller is connected to the cloud server through a wireless communication mode so as to realize signal transmission. .

When the system is specifically used, a man-machine conversation interface (input keyboard, mouse, display and the like) can be configured for the cloud server, and a mobile terminal such as a PC (personal computer), a tablet personal computer or a mobile phone can be used for connecting to the cloud server in a wireless communication mode to realize system login, monitoring and control.

The LED driving power supply integrating the HPLC communication and control functions combines the communication function, the electric energy metering function and the LED driver together, and if the LED driving power supply further cooperates with an HPLC centralized controller and a cloud server, a user can realize remote control, monitor the working condition and the electric performance of the LED driver in real time, and meet the intelligent control requirements of new-generation street lamps and landscape lamps.

Furthermore, the user can realize the interconnection and step-by-step forwarding of the driving power supply in a mesh networking mode, so that the communication distance is expanded. And the remote intelligent control and the timing and fixed-point control are realized through the communication between the mobile terminal and the cloud server. The specific control functions of the expansion can be realized in a programming mode by technicians according to actual needs and are loaded in the cloud server. Since this part is a technical content which can be implemented by a person skilled in the art, and does not belong to the protection scope of the present utility model, it will not be described in detail.

Claims

1. The LED driving power supply integrating the high-speed power line carrier communication and control functions comprises a shell, and is characterized in that the shell is internally provided with an LED driving power supply, an electric energy metering circuit and a high-speed power line carrier communication circuit;

in the LED driving power supply, a filtering rectification circuit is provided with an input end connected with alternating current, and the filtering rectification circuit is sequentially connected with a power factor correction circuit, a DC-DC conversion circuit and a filtering constant current output circuit; the filtering constant current output circuit is provided with two paths of outputs, one path of the output is used as the direct current output of the LED driving power supply, and the other path of the output is connected to the output setting and feedback control circuit; the output setting and feedback control circuit is connected to the DC-DC control circuit, which is connected to the DC-DC conversion circuit; the switch control and PWM dimming circuit has two paths of outputs which are respectively connected to the DC-DC control circuit and the output setting and feedback control circuit; the auxiliary power supply source simultaneously supplies power to the power factor correction circuit and the DC-DC control circuit;

2. The LED driving power supply of claim 1, wherein the power metering circuit incorporates a universal asynchronous receiver transmitter, the output of which is connected to a high-speed power line carrier communication circuit.

3. The LED driving power supply according to claim 1, wherein the DC-DC conversion circuit is a flyback DC-DC conversion circuit or an LLC resonant DC-DC conversion circuit.

4. The LED driving power supply according to claim 1, wherein the high-speed power line carrier communication circuit includes a high-speed micro control unit and a modem circuit for power line communication.

5. The LED driving power supply according to claim 1, wherein the input end of the filter rectifying circuit is directly connected to a power line for inputting alternating current, or a connection terminal for connecting the power line is provided at the input end thereof; one output end of the filtering constant current output circuit is directly connected with a power line for outputting direct current, or a connecting terminal for connecting the power line is arranged at the output end.

6. A system for integrated high-speed power line carrier communication and control of LED drive power supplies, comprising a plurality of sets of LED drive power supplies as set forth in claim 1; each group comprises a high-speed power line carrier centralized controller and a plurality of LED driving power supplies, and each LED driving power supply is respectively connected with a corresponding LED light source module; the LED driving power supplies in each group are connected to the high-speed power line carrier centralized controller in the group; each high-speed power line carrier centralized controller is connected to the cloud server through a wireless communication mode so as to realize signal transmission.

7. The system of claim 6, further comprising a mobile terminal connected to the cloud server by wireless communication, wherein the mobile terminal is a PC, tablet or cell phone.