LED intelligent illumination control system based on PoE technology

Abstract

The invention discloses an LED intelligent illumination control system based on a PoE technology. The LED intelligent illumination control system comprises a server, a router, a PoE switch and a PD type LED lamp. And the server is connected with the router through a network cable. And the router is connected with the PoE switch through a network cable. And the PoE switch is connected with the PD type LED lamp through a network cable. The LED intelligent lighting control system has the advantages that centralized power supply is adopted, and management is convenient; 2, the LED intelligent lighting control system is simple to install, and the cost is saved; and 3, the LED intelligent illumination control system has relatively high safety.

Description

Technical Field

[0001] The present invention relates to a lighting system, in particular to an LED intelligent lighting control system based on PoE (Power over Ethernet) technology. Background Art

[0002] The "LED intelligent lighting control system based on Bluetooth MESH technology and its implementation method" disclosed in Chinese invention application CN107949107A includes at least one discretely installed LED lamp, a Bluetooth node control system connected to all LED lamps, and a remote intelligent mobile terminal that wirelessly communicates with the Bluetooth node control system, and a power supply connected to the Bluetooth node control system to power the LED lamps. Each LED lamp in the same place can be flexibly adjusted and controlled according to the operator's wishes. While achieving lighting, it can also save energy and protect the environment, reflecting the effect of decoration and beautification of the environment. The disadvantage is that Bluetooth nodes are generally not deployed in existing buildings. If the above technical solution is used, the transformation cost is high, and the control range of Bluetooth MESH is limited. Summary of the invention

[0003] The purpose of the present invention is to provide a new type of LED intelligent lighting control system based on PoE technology, which is different from the existing LED intelligent lighting control system based on Bluetooth MESH technology.

[0004] In order to achieve the above-mentioned purpose, the present invention provides a technical solution: an LED intelligent lighting control system based on PoE technology, comprising: a server, a router, a PoE switch, and a PD-type LED lamp. The server is connected to the router via a network cable, the router is connected to the PoE switch via a network cable, and the PoE switch is connected to the PD-type LED lamp via a network cable.

[0005] As a preferred solution of LED intelligent lighting control system based on PoE technology, the PD type LED lamp has an Ethernet interface module, a power conversion module, a network chip module, an MCU module, a control circuit module, and an LED light source. The PoE switch is connected to the Ethernet interface module through a signal line and a power line, the Ethernet interface module is connected to the power conversion module through a power line, the power conversion module is respectively connected to the network chip module, the MCU module, the control circuit module, and the LED light source through a power line, the Ethernet interface module is connected to the network chip module through a signal line, and the network chip module is connected to the MCU module through a signal line. The MCU module is connected to the control circuit module through a signal line, and the control circuit module is connected to the LED light source through a signal line.

[0006] As a preferred solution for an LED intelligent lighting control system based on PoE technology, the PoE switch is further connected to a functional sensor via a network cable.

[0007] As a preferred solution for an LED intelligent lighting control system based on PoE technology, the functional sensor is a PoE light sensor or a PoE human body pyroelectric infrared sensor.

[0008] Compared with the prior art, the beneficial effects of the present invention are at least: 1. The LED intelligent lighting control system adopts centralized power supply, which is convenient for management; 2. The LED intelligent lighting control system is easy to install and saves costs; 3. The LED intelligent lighting control system has higher security. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] Figure 1 It is a schematic diagram of the structure of the present invention. Implementation

[0010] The present invention is further described in detail below by means of specific embodiments in combination with the accompanying drawings. It should be noted that the description of these embodiments is used to help understand the present invention, but does not constitute a limitation of the present invention. In addition, the technical features involved in each embodiment of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0011] See also Figure 1 , the figure shows an LED intelligent lighting control system based on PoE technology. The LED intelligent lighting control system includes: a server 1, a router 2, a PoE switch 3, a PD type LED lamp 4, etc.

[0012] The server 1 is connected to the router 2 via a network cable. The router 2 is connected to the PoE switch 3 via a network cable. The PoE switch 3 is connected to the PD type LED lamp 4 via a network cable.

[0013] The server 1 serves as a management platform for intelligent lighting. The server 1 may adopt a B / S network architecture. The server 1 can remotely control the on and off, brightness increase and decrease, working mode switching, lighting uniformity, etc. of the PD-type LED lamp 4, and the server 1 also has various services such as management, control and data processing. Among them, the brightness increase and decrease can be achieved through PWM dimming control. Among them, the working mode switching can be achieved by setting a series of software. Among them, the lighting uniformity is achieved through the lamp structure and light source arrangement.

[0014] The PD type LED lamp 4 has an Ethernet interface module 41, a power conversion module 42, a network chip module 43, an MCU module 44, a control circuit module 45, an LED light source 46, etc. The PoE switch 3 is connected to the Ethernet interface module 41 through a signal line and a power line. The Ethernet interface module 41 is connected to the power conversion module 42 through a power line. The power conversion module 42 is respectively connected to the network chip module 43, the MCU module 44, the control circuit module 45, and the LED light source 46 through power lines. The Ethernet interface module 41 is connected to the network chip module 43 through a signal line. The network chip module 43 is connected to the MCU module 44 through a signal line. The MCU module 44 is connected to the control circuit module 45 through a signal line. The control circuit module is connected to the LED light source 46 through a signal line. With the Ethernet interface module 41, the PD type LED lamp 4 is a plug-and-play device and has an independent IP address. Based on PoE power supply technology, the PoE switch 3 is connected to the Ethernet interface module 41 via a Category 5e, Category 6e or higher-level network cable to provide power support and data signals to the PD-type LED lamp 4 .

[0015] The power conversion module 42 converts the output voltage of the Ethernet interface module 41 into the working voltage required by the network chip module 43 , the MCU module 44 , the control circuit module 45 , and the LED light source 46 .

[0016] The MCU module 44 is the core component of the PD-type LED lamp 4. The MCU module 44 can be composed of a 32-bit microcontroller.

[0017] The network chip module 43 is an Ethernet protocol stack management chip, which is connected to the MCU module 44 via its own SPI interface to achieve Ethernet communication.

[0018] The control circuit module 45 integrates the functions required for constant current control and driving the LED, receives the control signal from the MCU module 44 , and controls the LED light source 46 .

[0019] The LED light source 46 is controlled by the control circuit module 45 to achieve PWM graded dimming control.

[0020] Preferably, the PoE switch 3 is further connected to a functional sensor via a network cable. The functional sensor may be a PoE light sensor 5 or a PoE human pyroelectric infrared sensor 6, that is, an intelligent collection function is added on the basis of the lighting function. With the above configuration, information such as the surrounding ambient light and human actions can be collected and uploaded to the server 1.

[0021] In addition, the existing network cabling infrastructure can be used to expand the control system functionality without any changes, and other Ethernet devices such as lighting, security, audio, access control, etc. can be integrated into the same cabling network. Managing multiple building automation and IP devices on the same network can avoid dedicated cabling, reduce cable trough redundancy, and make the implementation and upgrade of equipment and systems faster.

[0022] The advantages of the LED intelligent lighting control system are: 1. Centralized power supply, convenient management: The PD-type LED lamp 4 is powered by a unified power supply using the PoE switch 3, and each lamp can be easily and reliably connected to the power supply. If a power outage occurs, a single UPS can provide emergency power supply for all lamps. 2. Simple system installation and cost saving: PoE technology eliminates the need for expensive power supply installation and the time consumed in installing the power supply, and only one cable is required to connect the devices, which is convenient for wiring and saves space, and the terminal device can be moved with the network cable. In the original control system, only a slight modification of the original lighting device is required to facilitate implementation. 3. Higher safety: With PoE technology, power transmission is determined by the network cable, so leakage problems caused by wear of traditional power cables can be avoided. PoE power supply is DC voltage, and the voltage range specified by PoE technology is not more than 57Vdc. This standard requires that it is within the safe voltage range for the human body. Secondly, during the operation of the system, the PoE switch 3 will detect, classify, and power on before supplying power to the PD-type LED lamp 4. It will output power only after confirming that the connection is normal. If an abnormality occurs, it will detect and judge to protect the power off to ensure safe use. In addition, the system also has short-circuit, overcurrent and other protection designs to prevent serious damage to the equipment in the event of an abnormal accident. Through the use of PoE technology in the system, it is more convenient to integrate the system with places with Internet of Things functions, and it also changes the visual experience and interaction mode of the workspace.

[0023] After the router 2 and the PoE switch 3 are powered by AC220V, the following steps are required: 1. Detection Detection is a stage of identification of the PD-type LED lamp 4 by the PoE switch 3. A 25kΩ resistor is connected to the Ethernet interface module 41 of the PD-type LED lamp 4 to identify itself. During the detection stage, the PoE switch 3 outputs two different DC voltages to the PD-type LED lamp 4, which are 2.8V and 10V respectively. At this time, the voltage is completely applied to the characteristic resistance of the PD-type LED lamp 4. The characteristic resistance can be calculated by detecting the current difference in the two cases. The characteristics of effective identification are that the DC impedance is between 19K~26.5KΩ and the capacitance does not exceed 150nF. Only when the voltage value is detected to be consistent with the standard, the next step of operation will be performed.

[0024] 2. Grading After detecting that the PD-type LED lamp 4 is valid, the PoE switch 3 will start to perform a graded evaluation for the PD-type LED lamp 4 and estimate the power required by the PD-type LED lamp 4. The device grade power determination uses a detection voltage of 15.5V to 20.5V to detect the power grade of the LED lamp, and determines the power required by the LED lamp by monitoring the current drawn by the LED lamp, so as to facilitate the system to manage the power supply.

[0025] 3. Power supply When the PD-type LED lamp 4 is determined to be valid by the PoE switch 3 , the power supply is generally started within 15 us, and the PD-type LED lamp 4 is slowly powered from a low voltage.

[0026] 4. Circuit break detection According to the DC disconnection detection method, by detecting the DC current of the PD-type LED lamp 4, it is determined whether the PD-type LED lamp 4 is online. When the PD-type LED lamp 4 works in low power consumption mode, the PD-type LED lamp 4 needs to periodically draw a certain current from the line to continue working. According to the AC disconnection detection method, by detecting the impedance of the AC port of the PD-type LED lamp 4, it is determined whether it is disconnected. If the impedance is greater than the set value, it means that it is no longer connected, and the port will be powered off within the set time interval.

[0027] The above only expresses the implementation mode of the present invention, and its description is relatively specific and detailed, but it cannot be understood as limiting the scope of the invention patent. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the present invention, which all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention shall be based on the attached claims.

Claims

1. A LED intelligent lighting control system based on PoE technology, characterized in that: include: A server, a router, a PoE switch, and a PD-type LED lamp. The server is connected to the router via a network cable, the router is connected to the PoE switch via a network cable, and the PoE switch is connected to the PD-type LED lamp via a network cable.

2. According to claim 1, a LED intelligent lighting control system based on PoE technology is characterized in that: The PD type LED lamp has an Ethernet interface module, a power conversion module, a network chip module, an MCU module, a control circuit module, and an LED light source. The PoE switch is connected to the Ethernet interface module via a signal line and a power line. The Ethernet interface module is connected to the power conversion module via a power line. The power conversion module is respectively connected to the network chip module, the MCU module, the control circuit module, and the LED light source via a power line. The Ethernet interface module is connected to the network chip module via a signal line. The network chip module is connected to the MCU module via a signal line. The MCU module is connected to the control circuit module via a signal line, and the control circuit module is connected to the LED light source via a signal line.

3. According to claim 1, a LED intelligent lighting control system based on PoE technology is characterized in that: The PoE switch is further connected to the functional sensor via a network cable.

4. The LED intelligent lighting control system based on PoE technology according to claim 3 is characterized in that: The functional sensor is a PoE light sensor or a PoE human body pyroelectric infrared sensor.

Images