A data transmission module for an internet of things street lamp

Abstract

The utility model discloses a kind of data transmission module for street lamp of Internet of Things, including communication PCB circuit board, the shell for forming the sealed mounting space of PCB circuit board, and waterproof cable assembly and waterproof antenna assembly are arranged on shell and are electrically connected with PCB circuit board, first fixed structure and detachable fixed second fixed structure for being used to carry out data transmission module overall installation fixation are set on shell;The utility model uses sealing shell structure cooperation glue filling technology, IP67 grade waterproof dustproof performance is realized, north passes through 4G Cat.1 or LoRa wireless mode and control center / cloud platform or LoRa gateway communication, south passes through RS-485 or TTL interface and LED street lamp's drive power supply or controller communication;Compatible with each manufacturer's LED street lamp drive power supply or controller, adapt global each country 4G or LoRa's wireless frequency band, real-time acquisition GPS and compass satellite positioning information, can satisfy different countries, different scene street lamp's Internet of Things communication demand.

Description

Technical Field

[0001] This utility model relates to the field of intelligent control and data communication technology for streetlights, specifically to a data transmission module for IoT streetlights, applicable to urban road lighting systems, enabling remote monitoring of streetlight operation status, issuance of control commands, and wireless data transmission, falling within the scope of smart lighting and IoT terminal equipment application technology. Background Technology

[0002] With the deepening of smart city construction, urban road lighting systems are gradually developing towards intelligence and networking. Traditional streetlights mostly rely on manual inspection and timed centralized control, which has drawbacks such as high energy consumption, high maintenance costs, and long response time lag, making it difficult to meet the needs of energy conservation, emission reduction, and refined management.

[0003] Currently, most street light remote monitoring and control is achieved by installing single-lamp controllers or two-in-one driver power supplies on the side of the street light. However, the appearance, size, function, and performance of single-lamp controllers or two-in-one driver power supplies from different manufacturers are different, making them incompatible and having poor interchangeability. This leads to street light management departments being held hostage by manufacturers, and complicated installation and maintenance.

[0004] The outdoor working environment makes streetlights extremely susceptible to rain and dust, resulting in a high failure rate of electronic equipment. Therefore, the protection level of the data transmission module (DTU) must be upgraded to IP67 in order to achieve widespread application in the transformation of IoT streetlights. Utility Model Content

[0005] Technical objective: To address the shortcomings of existing data transmission modules, this utility model discloses a data transmission module for IoT streetlights, which solves problems such as poor equipment protection performance, single communication interface, invisible operating status, and inconvenient installation methods in the prior art.

[0006] Technical solution: To achieve the above technical objectives, the present invention adopts the following technical solution: A data transmission module for IoT streetlights includes an outer shell for forming a sealed mounting space for a PCB circuit board, and a waterproof cable assembly and a waterproof antenna assembly that pass through the outer shell and are electrically connected to the PCB circuit board. The outer shell is provided with a first fixing structure for overall installation and fixing of the data transmission module and a second fixing structure for detachable fixing. The second fixing structure includes mounting lugs provided on the mounting surface of the outer shell and elastic buckles provided along the insertion direction of the mounting lugs. The data transmission module is detachably fixed to the mounting position by engaging with the mating surface through the elastic buckles.

[0007] Preferably, the PCB circuit board of this utility model is provided with a power management chip for providing power to the data transmission module, a first southbound communication interface and a second southbound communication interface for communication between different channels, a main control chip for controlling the operation of the data transmission module, a status indicator light for displaying the operation of the data transmission module, a wireless communication module for wireless signal transmission, and a positioning module for acquiring geographic coordinate information.

[0008] Preferably, the power management chip of this utility model is used to step down the input high voltage DC4.5V~17V to DC3.8V, or to boost the low voltage DC2.5V~4.2V to DC3.8V, so as to provide a stable power supply for the main control chip and other functional modules.

[0009] Preferably, the first southbound communication interface of this utility model is an RS-485 communication interface or a TTL level communication interface, which is connected to the main control chip through a UART communication bus to realize data transmission and reception and serial communication with field external devices; the second southbound communication interface is a TTL level communication interface, which is connected to the main control chip through a UART peripheral to support dual device or redundant communication access and expand the multi-channel communication capability of the device.

[0010] Preferably, the status indicator lights of this utility model include a power status indicator light and a communication status indicator light, both of which adopt an LED light-emitting diode structure and are connected to the main control chip through a GPIO interface to display the working status and communication status of the device in real time.

[0011] Preferably, the wireless communication module of this utility model, a 4G Cat.1 or LoRa communication module, supports global wireless network frequency bands and is connected to the main control chip via a UART communication interface. It is used to upload the data processed by the main control chip to the control center / cloud platform or LoRa gateway via a protocol, and to receive downlink commands from the control center / cloud platform or LoRa gateway.

[0012] Preferably, the satellite positioning module is a chipset that supports multi-mode satellite positioning, is compatible with GPS and BeiDou systems, and is connected to the main control chip through a UART communication interface to receive satellite signals in real time and parse and generate positioning data.

[0013] Preferably, the elastic buckle of this utility model includes a sliding part that slides with the outer shell and a snap-fit ​​part that is perpendicular to the surface of the sliding part. The data transmission module is fixed by snapping the snap-fit ​​part into the slot of the mating surface.

[0014] Preferably, the outer shell of this utility model includes a hollow outer shell and an outer shell bottom cover disposed at the bottom of the outer shell for encapsulation. An installation space for a PCB circuit board is formed inside the outer shell. The outer shell bottom cover is connected to the inner wall of the outer shell through a snap-fit ​​structure. After the PCB circuit board is installed, the installation space is encapsulated with potting compound.

[0015] Preferably, the outer casing of this utility model is provided with indicator light holes corresponding to the status indicator lights on the PCB circuit board, and the operating status of the data transmission module is displayed through the indicator light holes.

[0016] Preferably, the waterproof cable assembly and waterproof antenna assembly of this utility model are both connected to the PCB circuit board by welding, and the outer shell is provided with a wire outlet hole for the antenna and cable to be led out, and a sealing ring is provided at the wire outlet hole for sealing.

[0017] Preferably, the first fixing structure of this utility model includes a first mounting hole and a second mounting hole diagonally opened on the outer shell, and the data transmission module is installed and fixed by screws passing through the first mounting hole and the second mounting hole.

[0018] Beneficial effects: The data transmission module for IoT streetlights disclosed in this utility model has the following beneficial effects: This utility model's data transmission module serves as an external communication module for LED street light drivers or controllers. It communicates northward with the control center / cloud platform or LoRa gateway via 4G Cat.1 or LoRa wireless, and southward with the LED street light drivers or controllers via RS-485 or TTL interfaces. It is compatible with LED street light drivers or controllers from various manufacturers, adapts to 4G or LoRa wireless frequency bands worldwide, and acquires GPS and BeiDou satellite positioning information in real time, meeting various application scenarios. It connects streetlights throughout urban areas to the Internet of Things, enabling intelligent control and digital management of urban lighting. Employing a sealed shell structure and potting process, it achieves IP67-level waterproof and dustproof performance, ensuring long-term stable operation in outdoor environments. It also features two installation methods: screw fixing and flexible snap-fit ​​detachable mounting, meeting diverse installation needs and improving construction efficiency and application flexibility. Power and communication status indicator lights are provided to reflect the device's operating status in real time, facilitating installation, debugging, and maintenance, and avoiding the "black box" phenomenon. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the accompanying drawings used in the description of the embodiments or the prior art will be briefly introduced below.

[0020] Figure 1 This is a schematic diagram of the functional modules on the PCB circuit board of this utility model; Figure 2This is a structural diagram of the data transmission module of this utility model; Figure 3 This is a disassembly diagram of the data transmission module of this utility model; Figure 4 This is a schematic diagram of the second fixing structure of this utility model; Figure 5 This is a structural diagram of the docking surface of this utility model.

[0021] Among them, 1—outer shell, 2—bottom cover of the outer shell, 3—PCB circuit board, 4—sealing ring, 5—waterproof cable assembly, 6—waterproof antenna assembly; 7—status indicator hole, 8—first mounting hole, 9—second mounting hole, 10—mounting clip, 11—spring clip, 12—power management chip, 13—first south-facing communication interface, 14—second south-facing communication interface, 15—main control chip, 16—status indicator, 17—wireless communication module, 18—outlet hole, 19—sliding part, 20—slotting part, 21—slot, 22—slot block, 23—positioning module. Detailed Implementation

[0022] Reference will now be made in detail to embodiments of the present disclosure, one or more of which are set forth herein. Each embodiment and example is provided by way of explanation of the data transmission modules, components, and materials of the present disclosure, and not as a limitation. Rather, the following description provides convenient illustrations for implementing exemplary embodiments of the present disclosure. Indeed, it will be apparent to those skilled in the art that various modifications and variations can be made within the teachings of the present disclosure without departing from the scope or spirit of the present disclosure.

[0023] like Figure 1 — Figure 4 As shown, this utility model discloses a data transmission module for IoT streetlights, including an outer shell for forming a sealed installation space for a PCB circuit board 3, and a waterproof cable assembly 5 and a waterproof antenna assembly 6 that pass through the outer shell and are electrically connected to the PCB circuit board 3. A first fixing structure and a detachable fixing structure are provided on the outer shell for overall installation and fixing of the data transmission module. The second fixing structure includes a mounting lug 10 provided on the mounting surface of the outer shell and an elastic buckle 11 provided along the insertion direction of the mounting lug 10. The data transmission module is detachably fixed to the installation position by engaging with the mating surface through the elastic buckle 11.

[0024] In embodiments of the utility model, such as Figure 1As shown, based on usage requirements, the PCB circuit board 3 is equipped with a power management chip 12 for providing power to the data transmission module, a first southbound communication interface 13 and a second southbound communication interface 14 for communication between different channels, a main control chip 15 for controlling the operation of the data transmission module, a status indicator light 16 for displaying the operation of the data transmission module, a wireless communication module 17 for wireless signal transmission, and a positioning module 23 for obtaining geographic coordinate information. The specific number and type of functional modules can be adapted by those skilled in the art to increase or decrease according to usage requirements without departing from the scope of this utility model.

[0025] The power management chip 12 of this invention is used to step down the input high voltage DC4.5V~17V to DC3.8V, or to boost the low voltage DC2.5V~4.2V to DC3.8V, providing a stable power supply for the main control chip 15 and other functional circuits; the first southbound communication interface 13 is an RS-485 communication interface or a TTL level communication interface, connected to the main control chip 15 via a UART communication bus, used to realize data transmission and reception and serial communication with field external devices; the second southbound communication interface 14 is a TTL level communication interface, connected to the main control chip 15 via a UART peripheral, used to support dual device or redundant communication access, expanding the device's multi-channel communication capability; status indicator lights 16 include... The device includes power status indicator and communication status indicator, both of which use LED structures and are connected to the main control chip 15 via a GPIO interface. They display the device's working and communication status in real time and, in conjunction with the indicator light holes 7 on the outer casing 1, display the real-time operating status of the data transmission module. The wireless communication module 17 is connected to the main control chip 15 via a UART interface and interacts with the remote control center / cloud platform or LoRa gateway via a 4G or LoRa wireless network to achieve wireless uploading of external device data, remote configuration parameter reception, and device status information feedback. The positioning module 23 is connected to the main control chip module 15 via a UART communication interface to receive satellite signals in real time and generate positioning data.

[0026] The elastic buckle of this utility model includes an elastic buckle 11, which includes a sliding part 19 that slides with the outer shell and a snap-fit ​​part 20 that is perpendicular to the surface of the sliding part 19. The data transmission module is fixed by snapping the snap-fit ​​part 20 into the snap-fit ​​groove 21 of the mating surface.

[0027] like Figure 5As shown, the mating surface of this utility model is provided with a locking block 22 that cooperates with the mounting lug 10. The locking block 22 is L-shaped so that the mounting lug 10 can be smoothly inserted from one end. A return spring is provided between the sliding part 19 and the outer shell along the sliding direction. After the sliding part 19 compresses the return spring to make the locking part 20 lock into the slot 21, the return spring applies elastic force to the sliding part 19, so that the locking part 20 and the slot 21 are in close contact, thereby improving the stability of the locking, ensuring the fixing effect of the data transmission module, and enabling quick disassembly.

[0028] The first fixing structure includes a first mounting hole 8 and a second mounting hole 9 diagonally formed on the outer casing. The data transmission module is installed and fixed by screws passing through the first mounting hole 8 and the second mounting hole 9. The first fixing structure can fix the data transmission module in any installation position. For tilted installations that require positional adjustments, the second fixing structure is preferred, thus facilitating the installation and removal of the data transmission module. The data transmission module of this invention is equipped with two types of fixing structures, allowing for flexible selection of the fixing method according to needs. This meets diverse installation requirements while improving construction efficiency and usage flexibility.

[0029] To facilitate the assembly of the data transmission module, such as Figure 3 As shown, the outer casing of this utility model includes a hollow outer casing 1 and an outer casing bottom cover 2 encapsulated at the bottom of the outer casing 1. An installation space for a PCB circuit board 3 is formed inside the outer casing 1. The waterproof cable assembly 5 and the waterproof antenna assembly 6 are both connected to the PCB circuit board 3 by welding. A wire outlet hole 18 for the antenna and cable is provided on the outer casing 1, and a sealing ring 4 is provided at the wire outlet hole 18 for sealing. The outer casing bottom cover 2 is connected to the inner wall of the outer casing 1 by a snap-fit ​​structure. After the PCB circuit board 3 is installed, the installation space is encapsulated with potting compound, which enables rapid assembly while ensuring waterproof and dustproof performance through the potting process.

[0030] The outer casing 1 of this utility model is also provided with indicator light holes 7 corresponding to the status indicator lights on the PCB circuit board 3. The operating status of the data transmission module is displayed through the indicator light holes 7, so as to realize the external visual display of the power status and communication working status of the device, which makes it convenient for users to judge its operating status in real time without disassembling the device, thereby improving the operation and maintenance efficiency and equipment availability.

[0031] The Data Transmission Unit (DTU) serves as an external communication module for LED street light drivers or controllers. It communicates northward with the control center / cloud platform or LoRa gateway via 4G Cat.1 or LoRa wireless, and southward with the LED street light driver or controller via RS-485 or TTL interfaces. It is compatible with LED street light drivers or controllers from various manufacturers, adapts to 4G or LoRa wireless frequency bands worldwide, and acquires GPS and BeiDou satellite positioning information in real time. This meets various application scenarios, connecting streetlights throughout the city to the Internet of Things (IoT) for intelligent control and digital management of urban lighting. The DTU can report the streetlight's on / off status, operating data, and fault alarm information in real time, and receive control commands from the control center / cloud platform to enable remote switching, dimming, and other functions. Employing a sealed shell structure and potting process, it achieves IP67-level waterproof and dustproof performance, ensuring long-term stable operation in outdoor environments. It also features two installation methods: screw fixing and flexible snap-fit ​​detachable fasteners, meeting diverse installation needs and improving construction efficiency and application flexibility.

[0032] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.

Claims

1. A data transmission module for IoT streetlights, characterized in that, The device includes an outer shell for forming a sealed mounting space for the PCB circuit board (3), and a waterproof cable assembly (5) and a waterproof antenna assembly (6) that pass through the outer shell and are electrically connected to the PCB circuit board (3). The outer shell is provided with a first fixing structure for overall installation and fixing of the data transmission module and a second fixing structure for detachable fixing. The second fixing structure includes a mounting lug (10) provided on the mounting surface of the outer shell and an elastic buckle (11) provided along the insertion direction of the mounting lug (10). The data transmission module is detachably fixed to the mounting position by engaging with the mating surface through the elastic buckle (11).

2. The data transmission module for IoT streetlights according to claim 1, characterized in that, The PCB circuit board (3) is provided with a power management chip (12) for providing power to the data transmission module, a first southbound communication interface (13) and a second southbound communication interface (14) for communication between different channels, a main control chip (15) for controlling the operation of the data transmission module, a status indicator light (16) for displaying the operation of the data transmission module, a wireless communication module (17) for transmitting wireless signals, and a positioning module (23) for obtaining geographic coordinate information.

3. The data transmission module for IoT streetlights according to claim 2, characterized in that, The power management chip (12) is used to step down the input high voltage DC 4.5V~17V to DC 3.8V, or to boost the low voltage DC 2.5V~4.2V to DC 3.8V, so as to provide a stable power supply for the main control chip (15) and other functional circuits.

4. The data transmission module for IoT streetlights according to claim 2, characterized in that, The first southbound communication interface (13) is an RS-485 communication interface or a TTL level communication interface, which is connected to the main control chip (15) through a UART communication bus to realize data transmission and reception and serial communication with field external devices; The second southbound communication interface (14) is a TTL level communication interface, which is connected to the main control chip (15) through a UART peripheral to support dual-device or redundant communication access.

5. A data transmission module for IoT streetlights according to claim 2, characterized in that, The status indicator (16) includes a power status indicator and a communication status indicator, both of which adopt an LED light-emitting diode structure and are connected to the main control chip (15) through a GPIO interface to display the working status and communication status of the device in real time.

6. A data transmission module for IoT streetlights according to claim 2, characterized in that, The wireless communication module (17) is a 4G Cat.1 or LoRa module that supports global wireless network frequency bands. It is connected to the main control chip (15) through the UART communication interface and is used to upload the data processed by the main control chip (15) to the control center / cloud platform or LoRa gateway through the protocol, and to receive downlink instructions from the control center / cloud platform or LoRa gateway.

7. A data transmission module for IoT streetlights according to claim 2, characterized in that, The positioning module (23) is a chipset that supports multi-mode satellite positioning and is compatible with GPS and Beidou systems. It is connected to the main control chip (15) through the UART communication interface, and receives satellite signals in real time and parses and generates positioning data.

8. A data transmission module for IoT streetlights according to claim 1, characterized in that, The elastic buckle (11) includes a sliding part (19) that slides with the outer shell and a snap-fit ​​part (20) that is perpendicular to the surface of the sliding part (19). The data transmission module is fixed by snapping the snap-fit ​​part (20) into the slot (21) of the mating surface. The first fixing structure includes a first mounting hole (8) and a second mounting hole (9) that are opened diagonally on the outer shell. The data transmission module is installed and fixed by screws that pass through the first mounting hole (8) and the second mounting hole (9).

9. A data transmission module for IoT streetlights according to claim 1, characterized in that, The outer shell includes a hollow outer shell (1) and an outer shell bottom cover (2) which is set at the bottom of the outer shell (1) for encapsulation. An installation space for a PCB circuit board (3) is formed inside the outer shell (1). The outer shell bottom cover (2) is connected to the inner wall of the outer shell (1) by a snap-fit ​​structure. After the PCB circuit board (3) is installed, the installation space is encapsulated with potting compound.

10. A data transmission module for IoT streetlights according to claim 9, characterized in that, The outer casing (1) is provided with indicator light holes (7) corresponding to the status indicator lights on the PCB circuit board (3), and the operating status of the data transmission module is displayed through the indicator light holes (7); the waterproof cable assembly (5) and the waterproof antenna assembly (6) are both connected to the PCB circuit board (3) by welding, and the outer casing (1) is provided with a wire outlet hole (18) for the antenna and cable to be led out, and a sealing ring (4) is provided at the wire outlet hole (18) for sealing.

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