Intelligent traffic-oriented multi-source data perception fusion extended computing device

Abstract

A multi-source data sensing fusion extended computing device for intelligent traffic comprises an outer shell and a DC12V power supply interface, the power supply interface is arranged on an interface mounting plate, passive heat dissipation teeth are arranged on the upper side of the outer shell, an antenna, an active heat dissipation fan hole and the interface mounting plate are arranged on the side face of the outer shell, and a data exchange module and a processing module are arranged in the outer shell. The data exchange module is communicated with the processing module through a gigabit network interface and an RS232 interface, the processing module comprises a PCB, a data computing power module, a data storage module and an independent fan control module on the PCB are all connected with the data fusion module, the data fusion module comprises a main control chip and a memory chip, and the main control chip and the memory chip are communicated. According to the utility model, the integrated design is adopted, the integration is high, the practicability is high, the appearance is beautiful, the internal part adopts the isolated partition design, the function is powerful, and meanwhile, the mutual interference of high-speed signal transmission is avoided.

Description

Technical Field

[0001] The utility model relates to the field of intelligent transportation multi-source data fusion equipment, in particular to an extended computing device for multi-source data perception fusion oriented to intelligent transportation. Background Art

[0002] Existing intelligent transportation edge computing devices have single functions and are mainly designed around edge computing functions. The edge computing capabilities are relatively rigid and not suitable for expansion. At the same time, they do not have high-bandwidth data exchange capabilities, and the structural heat dissipation method is relatively simple. They usually use heat dissipation teeth or heat dissipation fans for heat dissipation, so the corresponding heat dissipation power consumption will not be too large, resulting in poor data processing capabilities of existing edge computing devices and relatively limited interfaces.

[0003] In terms of heat dissipation design, existing equipment also finds it difficult to meet the demand for uniform heat dissipation over a large area. The heat dissipation method usually only adopts one of active heat dissipation or passive heat dissipation. The heat dissipation method is single and does not fully consider the distribution of heat sources, the influence of fan heat dissipation position, and the movement law of air fluid. The fan heat dissipation method adopted is also relatively fixed. Once the system is turned on, the fan speed is fixed, and long-term operation also poses a great test to the service life of the fan. Outdoor products are usually used in harsh environments, resulting in the continuous working service life of the fan not exceeding 2 years, which greatly reduces the quality of use of outdoor products. At the same time, the internal system of the equipment does not have the computing power expansion capability, nor does it integrate the 10G switching management function. An external switching module is required to realize the network data exchange function. Summary of the Invention

[0004] In order to solve the problems of existing edge technology node equipment, such as a single heat dissipation method, no consideration of heat source distribution, internal structure not based on ARM architecture scalable computing power design, no consideration of follow-up internal computing power expansion, and inability to flexibly adopt active and passive cooling. The utility model provides an expandable computing device for multi-source data perception and fusion for intelligent transportation, aiming to solve the defects of existing node equipment, realize flexible matching of computing power according to project requirements, and adopt a single heat dissipation method or a combination of active and passive heat dissipation according to the size of computing power and power matching. The utility model achieves this through the following technical solutions:

[0005] An extended computing device for multi-source data perception and fusion for intelligent transportation includes an outer shell and a DC12V power supply interface. Passive heat dissipation teeth are provided on the upper side of the outer shell, and an antenna, an active heat dissipation fan hole and an interface mounting plate are provided on the side of the outer shell. The DC12V power supply interface is provided on the interface mounting plate. A data exchange module and a processing module are provided in the outer shell. The data exchange module is connected to the processing module via a gigabit network interface and an RS232 interface. The data exchange module and the processing module are both connected to the DC12V power supply interface for power supply. The processing module includes a PCB board. A data fusion module, a data computing power module, a data storage module and an independent fan control module are provided on the PCB board. The data computing power module, the data storage module and the independent fan control module are all connected to the data fusion module. The data fusion module includes a main control chip and a memory chip. The main control chip is connected to the memory chip.

[0006] Preferably, the main control chip adopts RK3588, and the memory chip adopts industrial-grade 32GB 64-bit LPDDR4x or LPDDR5 memory.

[0007] Preferably, the data exchange module includes a 10G managed switch, and the 10G managed switch is connected to the main control chip via a Gigabit network and an RS232 interface.

[0008] Preferably, the 10 Gigabit managed switch is provided with 4 10 Gigabit network optical interfaces and 2 1 Gigabit network electrical interfaces. The 10 Gigabit managed switch adopts the Marvell 10 Gigabit managed switch, and the 10 Gigabit network optical interfaces and the 1 Gigabit network electrical interfaces are nested on the interface mounting plate.

[0009] Preferably, the data computing power module includes multiple groups of extended GPU modules, and the extended GPU modules are connected to the main control chip through a PCIE interface.

[0010] Preferably, the data storage module includes an industrial-grade flash memory FLSH storage module and multiple SSD storage hard disks. The industrial-grade flash memory FLSH storage module is connected to the main control chip, and the multiple SSD storage hard disks are connected to the main control chip through the hard disk interface. The industrial-grade flash memory FLSH storage module adopts industrial-grade 128GB or 256GB eMMC flash memory; the hard disk interface includes a SATA interface and a PCIE interface.

[0011] Preferably, the independent fan control module includes an independent fan power supply module, an independent fan and a PWM signal intelligent adjustment module; the independent fan is connected to the DC12V power supply interface through the independent fan power supply module, and the main control chip is connected to the independent fan through the PWM signal intelligent adjustment module.

[0012] Preferably, the main control chip is also connected to the USB interface, USB Type-C interface, HDMI interface, communication bus socket, PWM interface, UART debugging interface, and device status indicator light. The USB interface, USB Type-C interface, HDMI interface, UART debugging interface, and device status indicator light are nested on the interface mounting board; the communication bus socket is arranged on the outer shell on one side of the antenna; the status indicator light is a system fault indicator light and a device operation indicator light, and the communication bus socket includes an RS485 interface, an RS232 interface, and a DI / DO interface.

[0013] Preferably, the antenna includes a GPS antenna, a BT antenna and a WiFi antenna; the GPS antenna is connected to the main control chip through the GPS module, the BT antenna is connected to the main control chip through the BT module, and the WiFi antenna is connected to the main control chip through the WiFi module, and the GPS antenna, BT antenna and WiFi antenna are arranged relative to the interface mounting plate.

[0014] Preferably, the outer shell and the interface mounting plate are both made of aluminum alloy, and heat-conducting columns of different heights are provided between the passive heat dissipation teeth and the data exchange module and the processing module; a grounding point is also provided on the outer shell.

[0015] Beneficial effects of the utility model:

[0016] 1. This utility model adopts a scalable computing power design approach, which allows for flexible matching of GPU modules and cooling solutions based on intersection size, data access volume, and other factors. The main control chip uses a temperature feedback algorithm to intelligently adjust independent fans, thereby extending the service life of independent fans. The product structure combines active fans with passive cooling gears to improve heat dissipation capacity and fan service life, achieving rapid heat dissipation for high-power, distributed heat source systems. The design also incorporates PCB layout for heat dissipation simulation, enabling adjustment of fan position and maximum fan airflow.

[0017] 2. The device shell structure of the present invention adopts a combination design of high-hardness all-aluminum alloy material, and the heat dissipation panel adopts a high-strength and large-area serrated design to increase the passive heat dissipation area. At the same time, it is equipped with a high-speed fan inside to meet the 100W power heat dissipation in a high-temperature environment of 70°C. The combined heat dissipation solution enables the device to achieve a small and fast heat dissipation effect, meeting the stable operation environment of the equipment in outdoor high-temperature weather. The output port of the device has a variety of high-speed data exchange interfaces, including 10 Gigabit network optical interface, Gigabit network electrical port, USB 3.0, USB Type-C, and HDMI interface, and also has a variety of low-speed data acquisition interfaces, including DI / DO, RS485, RS232, and PWM interfaces. It is also equipped with a power supply interface, a debugging interface, and a device status indicator to achieve stable power supply and ensure the normal operation of the system. The device status indicator facilitates later operation and maintenance.

[0018] 3. This utility model can be deployed at the edge of a network terminal close to objects or data sources. It is a data fusion device used for multi-type data, multi-network integration, data acquisition and processing, AI algorithms, and edge storage. Through radar and video data fusion processing, it outputs target information such as the type, position, speed, and heading of road targets. Through the reading and control capabilities of environmental monitoring sensors, it can monitor the road environment and control road equipment. Through multi-type wireless data transmission functions, it can realize intelligent operation and maintenance of equipment and data transmission. Through multi-type data access, it can realize environmental monitoring, traffic flow, traffic event judgment, intelligent operation and maintenance, and other functions in intelligent traffic scenarios.

[0019] 4. This practical device adopts an integrated design and is highly integrated, with high practicality, beautiful appearance, and internal isolated partition design. It meets the needs of powerful functions while ensuring that high-speed signal transmission is not interfered with each other. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a schematic diagram of the three-dimensional structure of the device of the utility model;

[0021] Figure 2 This is a front view structural diagram of the utility model device;

[0022] Figure 3 This is a rear structural diagram of the device of the present utility model;

[0023] Figure 4 This is a schematic diagram of the circuit logic structure of the device of this utility model.

[0024] In the picture: 1. Active cooling fan hole; 2. Passive cooling teeth; 3. GPS antenna; 4. BT antenna; 5. WiFi antenna; 6. Interface mounting plate; 7. 10G network optical interface; 8. Gigabit network electrical interface; 9. UART debugging interface; 10. USB interface; 11. USB Type-C interface; 12. HDMI interface; 13. Device status indicator light; 14. DC12V power supply interface; 15. Communication bus socket; 16. Grounding point. DETAILED DESCRIPTION

[0025] To facilitate understanding of the present invention, a more comprehensive description of the present invention will be provided below with reference to the accompanying drawings. The drawings illustrate preferred embodiments of the present invention. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to provide a more thorough and comprehensive understanding of the present invention.

[0026] Below, the present invention is further described with reference to the accompanying drawings and specific embodiments:

[0027] Example 1:

[0028] like Figures 1 to 4 As shown, an extended computing device for multi-source data perception and fusion for intelligent transportation includes an outer shell and a DC12V power supply interface 14. The device preferably sets the DC12V power supply interface 14 on the interface mounting plate 6, and adapts the power supply by using an external DC12V power adapter. The power supply interface adopts a high-specification DC connector that can withstand a current of 10A to ensure stable and reliable power supply to the system.

[0029] Specifically, the upper side of the outer shell of the device is provided with passive heat dissipation teeth 2, and the side is provided with an antenna, an active heat dissipation fan hole 1 and an interface mounting plate 6. The data exchange module and the processing module are provided inside. The separate design of the two modules can effectively reduce the mutual influence of the heat sources of the two modules, while minimizing the electromagnetic interference generated during high-speed data exchange and improving data transmission efficiency. Among them, the data exchange module is connected to the processing module through the gigabit network interface and the RS232 interface to realize data information transmission between the two; the data exchange module and the processing module are both connected to the DC12V power supply interface for power supply, that is, the DC12V power supply interface at this time divides the electrical energy into two paths, one for the data exchange module and the other for the processing module, and the total electrical power between the two is shared, without focusing on the data exchange module or the processing module.

[0030] The processing module includes a PCB board, that is, the PCB board is directly connected to the DC12V power supply interface to achieve stable power supply for various components and modules on the PCB board; the PCB board is equipped with a data fusion module, a data computing power module, a data storage module and an independent fan control module, and the data computing power module, the data storage module and the independent fan control module are all connected to the data fusion module, thereby realizing data communication between the modules, that is, the control and information feedback processing of the data exchange module, the data computing power module, the data storage module and the independent fan control module are realized through the data fusion module; the data fusion module includes a main control chip and a memory chip, and the main control chip is connected to the memory chip to realize temporary storage of the main control chip's calculation data, as well as data exchanged with external storage devices such as hard disks. The main control chip of this device is preferably the RK3588 chip, which is an 8K industrial core board. The industrial-grade processor and components have a wide temperature range of -40°C to 85°C, and can achieve 8K@60fps H.265 / VP9 video decoding and 8K@30fps H.265 / H.264 video encoding, which can meet the fusion processing of video data and meet the needs of industrial-grade applications; the memory chip preferably uses industrial-grade 32GB 64bit LPDDR4x or LPDDR5 memory.

[0031] The data exchange module of this device includes a 10 Gigabit managed switch, which is connected to the main control chip via a Gigabit network interface and an RS232 interface. The Gigabit network interface is responsible for data collection and forwarding, and the RS232 interface is responsible for protocol communication with the main control board, control naming and publishing, and other functions. This 10 Gigabit managed switch uses a Marvell 10 Gigabit managed switch, which can provide up to 128Gbps of data exchange capacity to ensure that the data warehouse of the core backbone network is unblocked. It is also equipped with 4 10 Gigabit network optical interfaces 7 and 2 Gigabit network electrical interfaces 8, which are nested on the interface mounting plate 6. This device leads to 4 10 Gigabit network optical interfaces 7 and 2 Gigabit network electrical interfaces 8 through the 10 Gigabit managed switch, which facilitates the access of video, radar and other data with large data flows and high communication rates. It can also facilitate the access of traffic scene data acquisition sensors such as vehicle-road cooperative unit RSU equipment, high-definition cameras, 4D imaging radars, lidars, and traffic lights.

[0032] The antennas of this device include a GPS antenna 3, a BT antenna 4, and a WiFi antenna 5. The GPS antenna 3 is connected to the main control chip via the GPS module, the BT antenna 4 is connected to the main control chip via the BT module, and the WiFi antenna 5 is connected to the main control chip via the WiFi module. The GPS antenna 3, BT antenna 4, and WiFi antenna 5 are all located on the side of the outer shell and are positioned opposite the interface mounting plate 6. The main control chip of this device can obtain GPS signals through the GPS module and GPS antenna 3, thereby obtaining geographic location information for device installation and operation. Through the built-in BT module, the BT module is connected to the main control chip via UART communication. Users can obtain device operating status and monitoring data through Bluetooth connection, facilitating intelligent operation and maintenance. Through the built-in WiFi module, the WiFi module is connected to the main control chip via the SDIO interface. Users can obtain fused data through WiFi connection, facilitating wireless transmission of fused data such as video radar.

[0033] The independent fan control module of this device includes an independent fan power supply module, an independent fan, and a PWM signal intelligent regulation module. The main control chip is connected to the independent fan via the PWM signal intelligent regulation module to achieve speed control of the independent fan. The independent fan is installed at the location of the active cooling fan hole 1 on the side of the outer shell and is located on the inner side of the outer shell. The independent fan power supply module is equipped with a step-down transformer to reduce the voltage provided by the DC12V power supply interface to independently power the independent fan. However, the power provided by the independent fan power supply module for the independent fan operation also derives from the power supplied to the processing module from the DC12V power supply interface. This power is independently supplied to the processing module of the device. That is, the power supplied by the processor module is further divided into two parts: one for the independent fan control module and the other for all components on the PCB board except the independent fan control module. However, the power supplied to the independent fan control module is greater than that supplied to other components or modules, thereby preventing system power instability caused by fan regulation and reducing interference. Because the power used by the independent fan operation is much greater than that used by the main control chip and other modules, this circuit power distribution strategy is required.

[0034] The data computing module of this device includes multiple groups of extended GPU modules, which are all connected to the main control chip through the PCIE interface. This device preferably uses four groups of extended GPU modules, namely extended GPU module 1, extended GPU module 2, extended GPU module 3, and extended GPU module 4. The main control chip in the data fusion module simultaneously reads the temperature of each internal module stability and the onboard temperature and humidity sensor module through the extended GPU module. It is connected to the main control chip through the PWM signal intelligent adjustment module, so that the main control chip can immediately control the operation of the independent fan according to the operating temperature of the equipment, ensuring that when the conditions for passive cooling are met, the use of independent fans for heat dissipation is reduced, and the service life of the independent fans in outdoor environments is maximized; the selected independent fans have a speed reading function, which can provide real-time feedback on the fan's operating status.

[0035] The data storage module of this device includes an industrial-grade flash memory FLSH storage module and multiple SSD storage hard drives. The industrial-grade flash memory FLSH storage module is connected to the main control chip, and the multiple SSD storage hard drives are connected to the main control chip through the hard drive interface. The industrial-grade flash memory FLSH storage module can be used to store data necessary for device operation, such as the device operation system and device operation log, and the multiple SSD storage hard drives are used to store traffic information, weather information, radar information, camera information and other data recorded by the device; the industrial-grade flash memory FLSH storage module adopts industrial-grade 128GB or 256GB eMMC flash memory, and the SSD storage hard drive preferably has a capacity greater than or equal to 1T. The hard drive interface includes SATA interface and PCIE interface. When all SATA interfaces of the main control chip are expanded and used, the PCIE interface can also be used to continue to expand the SSD storage hard drive.

[0036] This device offers a rich set of data interfaces, enabling access to various high-speed, low-speed, high-volume data stream, and wireless data communication devices. Its main control chip communicates with a USB port 10, a USB Type-C port 11, an HDMI port 12, a communication bus socket 15, a PWM port, a UART debug port 9, and a device status indicator light, enabling information and data transfer with the main control chip. The USB port 10, USB Type-C port 11, HDMI port 12, UART debug port 9, and device status indicator light are nested within the interface mounting plate 6, while the communication bus socket 15 is located within the outer housing on one side of the antenna, specifically between the BT antenna 4 and the WiFi antenna 5. The device status indicator light 13 includes two sets of system fault indicators and device operation indicators, controlled by the main control chip. These indicators can be arranged vertically and horizontally. The communication bus socket 15 includes an RS485 port, an RS232 port, and a DI / DO port, integrating these three interfaces to reduce the clutter of cable routing.

[0037] This device is equipped with a variety of USB interfaces 10, which can be connected to devices such as a mouse and a USB flash drive for easy debugging and data viewing and reading; the HDMI interface 12 can be connected to a monitor to view the integrated data processed by the main control chip on site; it can also be connected to micro weather stations, environmental sensors, road surface monitoring sensors, LED street lights and other devices through multiple types of IoT interfaces, including RS485 interface, RS232 interface, DI / DO interface, PWM interface, etc., through these interfaces to connect to the box control, and collect various elements of the road traffic scene through the sensor data warehouse; the UART debugging interface 9 is mainly responsible for equipment debugging, and this interface is connected to the PCB board and the 10G managed switch, with debugging serial port and network port lead-out for easy debugging.

[0038] The device's four extended GPU modules are all Hailo 8 modules. This computing power module uses a plug-in combination design of multiple Hailo8 modules, with a single computing power of up to 26TOPS and a single operating power consumption of 10W, which can flexibly expand computing power. The module is connected to the main control chip RK3588 via the PCIE30 bus. The main control chip is responsible for integrated control such as task scheduling, instruction issuance, data calculation and storage, while the Hailo 8 module is responsible for AI data analysis, video image processing, radar point cloud data analysis, etc. The system uses a flow-based algorithm to efficiently process the NN neural network layer. Compared with the traditional GPU architecture where storage is external to the core chip, power consumption and efficiency are significantly improved.

[0039] The device's outer shell and interface mounting plate 6 are both made of aluminum alloy, effectively reducing the weight while providing improved thermal conductivity. Thermal columns of varying heights are provided between the passive heat dissipation teeth 2 and the data exchange module and processing module, effectively transferring heat from the two modules to the passive heat dissipation teeth 2. The passive heat dissipation teeth 2 utilize a large-area, deep fan-heat design, effectively increasing the passive heat dissipation area. Because the modules vary in height, thermal columns of varying heights are used to transfer heat from each module to the passive heat dissipation teeth 2, rapidly transferring chip temperature and reducing thermal conductivity. By combining passive and active heat dissipation, the device maintains a power consumption and heat dissipation effect of 100W at an ambient temperature of 70°C. The outer shell features elegantly designed heat dissipation holes to facilitate air exchange within the shell via an independent fan. A grounding point 16 is also provided on the outer shell for ground wire access.

[0040] The expandable computing device of the present invention is a design scheme based on multi-core, multi-system, and multi-modality. The structure fully considers the power consumption and heat energy distribution of each system module. At the same time, the PCB layout is carried out according to the structural characteristics to ensure the uniform heat dissipation effect of the module. The fan design can also be designed for position and air volume according to the flow particle simulation results. The design scheme is flexible and is based on the scalable computing power design method of the ARM architecture. The heat dissipation method is flexibly adjusted according to the number and distribution characteristics of the heat sources, including the use of a single passive heat dissipation method, an active / passive combination method, and flexible adjustment of the fan position in active heat dissipation.

[0041] Those skilled in the art can make various other corresponding changes and deformations based on the technical solutions and concepts described above, and all of these changes and deformations should fall within the scope of protection of the claims of the present utility model.

Claims

1. An expandable computing device for multi-source data perception and fusion for intelligent transportation, comprising an outer shell and a DC12V power supply interface, characterized in that: Passive heat dissipation teeth are provided on the upper side of the outer shell, and an antenna, an active heat dissipation fan hole and an interface mounting plate are provided on the side of the outer shell. The DC12V power supply interface is provided on the interface mounting plate. A data exchange module and a processing module are provided in the outer shell. The data exchange module is connected to the processing module through a gigabit network interface and an RS232 interface. Both the data exchange module and the processing module are connected to the DC12V power supply interface for power supply; the processing module includes a PCB board, and a data fusion module, a data computing power module, a data storage module and an independent fan control module are provided on the PCB board. The data computing power module, the data storage module and the independent fan control module are all connected to the data fusion module. The data fusion module includes a main control chip and a memory chip, and the main control chip is connected to the memory chip.

2. The expandable computing device for multi-source data perception and fusion for intelligent transportation according to claim 1, characterized in that: The main control chip adopts RK3588, and the memory chip adopts industrial-grade 32GB 64-bit LPDDR4x or LPDDR5 memory.

3. The expandable computing device for multi-source data perception and fusion for intelligent transportation according to claim 1, characterized in that: The data exchange module includes a 10G managed switch, which is connected to the main control chip via a Gigabit network and an RS232 interface.

4. The expandable computing device for multi-source data perception and fusion for intelligent transportation according to claim 3, characterized in that: The 10 Gigabit managed switch is provided with 4 10 Gigabit network optical interfaces and 2 1 Gigabit network electrical interfaces. The 10 Gigabit managed switch adopts the Marvell 10 Gigabit managed switch. The 10 Gigabit network optical interfaces and the 1 Gigabit network electrical interfaces are nested on the interface mounting plate.

5. The expandable computing device for multi-source data perception and fusion for intelligent transportation according to claim 1, characterized in that: The data computing power module includes multiple groups of extended GPU modules, and the extended GPU modules are connected to the main control chip through the PCIE interface.

6. The expandable computing device for multi-source data perception and fusion for intelligent transportation according to claim 1, characterized in that: The data storage module includes an industrial-grade flash memory FLSH storage module and multiple SSD storage hard drives. The industrial-grade flash memory FLSH storage module is connected to the main control chip, and the multiple SSD storage hard drives are connected to the main control chip through the hard drive interface. The industrial-grade flash memory FLSH storage module uses an industrial-grade 128GB or 256GB eMMC flash memory; the hard drive interface includes a SATA interface and a PCIE interface.

7. The expandable computing device for multi-source data perception and fusion for intelligent transportation according to claim 1, characterized in that: The independent fan control module includes an independent fan power supply module, an independent fan and a PWM signal intelligent adjustment module; the independent fan is connected to the DC12V power supply interface through the independent fan power supply module, and the main control chip is connected to the independent fan through the PWM signal intelligent adjustment module.

8. The expandable computing device for multi-source data perception and fusion for intelligent transportation according to claim 1, characterized in that: The main control chip is also connected to the USB interface, USB Type-C interface, HDMI interface, communication bus socket, PWM interface, UART debugging interface and device status indicator light. The USB interface, USB Type-C interface, HDMI interface, UART debugging interface and device status indicator light are nested on the interface mounting board; the communication bus socket is arranged on the outer shell on one side of the antenna; the device status indicator light is a system fault indicator light and a device operation indicator light, and the communication bus socket includes an RS485 interface, an RS232 interface and a DI / DO interface.

9. The expandable computing device for multi-source data perception and fusion for intelligent transportation according to claim 1, characterized in that: The antenna includes a GPS antenna, a BT antenna and a WiFi antenna; the GPS antenna is connected to the main control chip through the GPS module, the BT antenna is connected to the main control chip through the BT module, and the WiFi antenna is connected to the main control chip through the WiFi module. The GPS antenna, BT antenna and WiFi antenna are arranged opposite to the interface mounting plate.

10. The expandable computing device for multi-source data perception and fusion for intelligent transportation according to claim 1, characterized in that: The outer shell and the interface mounting plate are both made of aluminum alloy. Heat-conducting columns of different heights are provided between the passive heat dissipation teeth and the data exchange module and the processing module. A grounding point is also provided on the outer shell.

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