Portable vehicle-mounted video terminal based on moving vehicle

Abstract

The utility model discloses a portable vehicle-mounted video terminal based on a moving vehicle. Comprising an aluminum shell (6), a video control module (1), a 2.4 G / 5G double-frequency wireless module (2), a battery module (3), a first Ethernet aviation plug interface (4), a power switch (5), a video control module PAL1 aviation plug interface (7), a video control module PAL2 aviation plug interface (8), a video control module power interface (9), a 2.4 G / 5G double-frequency wireless module power interface (10), a 2.4 G / 5G double-frequency wireless module Ethernet interface (11) and a K-PAL1 aviation plug interface (12), a K-PAL2 aviation plug interface (13), a second Ethernet aviation plug interface (14), a 2.4 G antenna aviation plug interface (15) and a 5G antenna aviation plug interface (16). According to the utility model, video acquisition of moving vehicles is realized, and the video monitoring capability of the moving vehicles is improved; meanwhile, different base stations are switched and connected in the vehicle moving process, seamless switching is achieved, and image transmission continuity is guaranteed.

Description

Technical Field

[0001] The utility model belongs to the technical field of video processing and relates to a portable vehicle-mounted video terminal based on a moving vehicle. Background Art

[0002] With the rapid advancement of communication and video imaging technologies, these advanced technologies have deeply penetrated the automotive field, providing powerful technical support for systems such as real-time monitoring. In practical vehicle applications, especially in complex test environments, the importance of video image processing and transmission has become increasingly prominent. These processes require close coordination between test vehicles, test equipment, and personnel.

[0003] However, the development of in-vehicle video terminals still faces numerous challenges. These include limitations on the transmission range of existing vehicle image transmission radios, resulting in high video transmission latency over large and complex terrain. Furthermore, insufficient image clarity hinders accurate perception of the vehicle's surroundings. Furthermore, low device integration limits overall system optimization and upgrade potential.

[0004] At present, vehicle-mounted video terminals have exposed some problems in actual applications, mainly manifested in insufficient wireless communication capabilities, lack of diversity in equipment functions, poor image quality, time delay in video transmission, and low overall integration. Utility Model Content

[0005] (1) Purpose of the utility model

[0006] The purpose of the utility model is to provide a portable vehicle-mounted video terminal based on a moving vehicle, which is applied to the moving vehicle in a complex test environment or demonstration state to realize the ability to collect, compress and transmit the passenger operation video and equipment images in the vehicle.

[0007] (2) Technical solution

[0008] In order to solve the above technical problems, the utility model provides a portable vehicle-mounted video terminal based on a moving vehicle, which includes: an aluminum shell 6 and a video control module 1, a 2.4G / 5G dual-band wireless module 2, a battery module 3, a first Ethernet aviation plug interface 4, a power switch 5, a video control module PAL1 aviation plug interface 7, a video control module PAL2 aviation plug interface 8, a video control module power interface 9, a 2.4G / 5G dual-band wireless module power interface 10, a 2.4G / 5G dual-band wireless module Ethernet interface 11, K-PAL1 aerial socket interface 12, K-PAL2 aerial socket interface 13, second Ethernet aerial socket interface 14, 2.4G antenna aerial socket interface 15, 5G antenna aerial socket interface 16; 2.4G / 5G dual-band wireless module 2 is installed at the bottom of the aluminum housing 6 near the handle, and the 2.4G antenna aerial socket interface 15 and 5G antenna aerial socket interface 16 are installed on the lower left side of the aluminum housing 6 through the precise opening of the housing. The battery module 3 is installed in the battery compartment on the right side of the aluminum housing 6. The battery module 3 is connected to the power switch 5. After control, they are respectively connected to the video control module power interface 9 and the 2.4G / 5G dual-band wireless module power interface 10; the video control module PAL1 aerial plug interface 7 is connected to the K-PAL1 aerial plug interface 12, the video control module PAL2 aerial plug interface 8 is connected to the K-PAL2 aerial plug interface 13, the video control module PAL1 aerial plug interface 7 and the video control module PAL2 aerial plug interface 8 are connected to the external CVBS video source, the K-PAL1 aerial plug interface 12 and the K-PAL2 aerial plug interface 13 are connected to the video control module 1; the 2.4G / 5G dual-band wireless module Ethernet interface 11 includes a first Ethernet interface and a second Ethernet interface, the first Ethernet interface is connected to the second Ethernet aerial plug interface 14 external to the shell, establishing a path for external communication; the second Ethernet interface is connected to the first Ethernet aerial plug interface 4 of the video control module 1, establishing a channel for video control module data transmission; the video control module 1 is responsible for image acquisition, compression and upload tasks, and the 2.4G / 5G dual-band wireless module 2 is responsible for data forwarding of the wireless camera and the video control module.

[0009] Among them, the video control module PAL1 aerial plug interface 7 and the video control module PAL2 aerial plug interface 8 are 2-channel PAL video input interfaces, which perform 2-channel PAL video capture and H.264, H.265 video compression and video splicing, and transmit them to the 2.4G / 5G dual-band wireless module 2 via Ethernet.

[0010] Among them, the 2.4G / 5G dual-band wireless module 2 includes a first power supply unit and a dual-band signal unit; the first power supply unit supplies power to the dual-band signal unit; the dual-band signal unit integrates AR9557 / AR9882+AR9580 chips, with a main frequency of 600MHz and 64MB DDR2 memory. It operates in a dual-channel 5GHz unlicensed frequency band, with a maximum number of terminal accesses of 256. The wireless link has a fixed allocation of uplink and downlink bandwidth, crosses three-layer communication, and realizes VLAN transparent transmission.

[0011] Among them, the dual-frequency signal unit adopts 4T4R architecture.

[0012] Among them, the first power supply unit includes a DCDC switching power supply and a linear power supply. The DCDC switching power supply converts the input 12V DC voltage into 5V voltage and 3.3V voltage; the linear power supply supplies power to the dual-frequency signal unit.

[0013] Among them, the video control module 1 includes a second power supply unit and a video processing unit. The second power supply unit supplies power to the video processing unit; the video processing unit integrates a HiSilicon 3520 processor, an Ethernet interface, two PAL input interfaces and an HDMI output circuit module.

[0014] Among them, the HiSilicon 3520 processor uses the domestic HiSilicon HI3520D chip, supports 2GB DDR3, 265MB NANDFLASH; supports 1 Gigabit Ethernet; supports 2 PAL inputs; supports HDMI video output.

[0015] The second power supply unit is the same as the first power supply unit.

[0016] The aluminum shell is designed into 6 blocks for installing different devices.

[0017] Among them, the battery module 3 is powered by a lithium battery pack, which is powered by a built-in 30,000 mAh lithium battery with an output voltage of 12V.

[0018] (3) Beneficial effects

[0019] The portable vehicle-mounted video terminal based on a moving vehicle provided by the above technical solution is a low-power, portable, stable and reliable vehicle-mounted video terminal with video synthesis processing and image compression functions. It supports the acquisition of 2-channel PAL (1920*1080) videos and H.264 / H.265 video compression and video splicing. The vehicle-mounted video terminal has 2.4G and 5.8G wireless communication functions. It collects wireless camera videos through 2.4G and transmits them to related devices through high-speed seamless roaming between different base stations through 5.8G, realizing the video acquisition function of moving vehicles and improving the video monitoring capabilities of moving vehicles. At the same time, it has the ability to switch connections to different base stations during the movement of the vehicle to achieve seamless switching and ensure the continuity of image transmission. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a schematic diagram of the vehicle-mounted video terminal of the utility model

[0021] Figure 2 This is a schematic diagram of the vehicle-mounted video terminal panel of the utility model.

[0022] Figure 3 This is the application layout diagram of the vehicle-mounted video terminal of this utility model. DETAILED DESCRIPTION

[0023] In order to make the purpose, content and advantages of the present invention more clear, the specific implementation methods of the present invention are further described in detail below with reference to the accompanying drawings and embodiments.

[0024] like Figure 1 As shown, the portable vehicle-mounted video terminal based on a sports vehicle in this embodiment includes: an aluminum shell 6 and a video control module 1, a 2.4G / 5G dual-band wireless module 2, a battery module 3, a first Ethernet aerial plug interface 4, a power switch 5, a video control module PAL1 aerial plug interface 7, a video control module PAL2 aerial plug interface 8, a video control module power interface 9, a 2.4G / 5G dual-band wireless module power interface 10, a 2.4G / 5G dual-band wireless module Ethernet interface 11, a K-PAL1 aerial plug interface 12, a K-PAL2 aerial plug interface 13, a second Ethernet aerial plug interface 14, a 2.4G antenna aerial plug interface 15, and a 5G antenna aerial plug interface 16.

[0025] The 2.4G / 5G dual-band wireless module 2 is installed at the bottom of the aluminum shell 6 near the handle. The 2.4G antenna aviation plug interface 15 and the 5G antenna aviation plug interface 16 are installed on the lower left side of the aluminum shell 6 through precise openings in the shell. The battery module 3 is installed in the battery compartment on the right side of the aluminum shell 6. The battery module 3 is controlled by the power switch 5 and connected to the video control module power interface 9 and the 2.4G / 5G dual-band wireless module power interface 10 respectively; the video control module PAL1 aviation plug interface 7 is connected to the K-PAL1 aviation plug interface 12, the video control module PAL2 aviation plug interface 8 is connected to the K-PAL2 aviation plug interface 13, the video control module PAL1 aviation plug interface 7 and the video control module The PAL2 aerial plug interface 8 is connected to the external CVBS video source, and the K-PAL1 aerial plug interface 12 and the K-PAL2 aerial plug interface 13 are connected to the video control module 1; the 2.4G / 5G dual-band wireless module Ethernet interface 11 includes a first Ethernet interface and a second Ethernet interface, and the first Ethernet interface is connected to the second Ethernet aerial plug interface 14 external to the shell to establish a path for external communication; the second Ethernet interface is connected to the first Ethernet aerial plug interface 4 of the video control module 1 to establish a channel for video control module data transmission; the video control module 1 is responsible for image acquisition, compression and upload tasks, and the 2.4G / 5G dual-band wireless module 2 is responsible for data forwarding of the wireless camera and video control module.

[0026] The video control module PAL1 aerial plug interface 7 and the video control module PAL2 aerial plug interface 8 are two-channel PAL video input interfaces, supporting two-channel PAL (1920*1080) video capture, video standard PAL (625 lines, 50 fields / S), and H.264, H.265 video compression and video splicing, and transmitted to the 2.4G / 5G dual-band wireless module via Ethernet.

[0027] The 2.4G / 5G dual-band wireless module 2 consists of two core parts: a power supply unit and a dual-band signal unit.

[0028] The dual-band signal unit integrates the AR9557 / AR9882 and AR9580 chipsets, operating at a 600MHz main frequency and 64MB of DDR2 memory. It operates in the dual 5GHz unlicensed frequency band and supports up to 256 terminals. The wireless link can allocate fixed uplink and downlink bandwidth, and supports asymmetric bandwidth, with uplink and downlink bandwidth adjusted in any ratio. It can communicate across Layer 3 and implement VLAN transparent transmission. Based on IEEE802.11n MIMO (Multiple Input Multiple Output) technology, it utilizes a 4T4R architecture, supporting wireless transmission rates of up to 600Mbps and high-speed seamless roaming between base stations at speeds of 200 km / h, with a roaming handover time of less than 50ms. It supports wireless transmission rates of up to 600Mbps and a customizable signal threshold to ensure normal network communication and data transmission. The combined RF power output reaches up to 4 x 500mW, with a sensitivity of up to -98dBm.

[0029] The portable vehicle-mounted video terminal complies with the IEEE 802.11b / g / n standards, operates in the 2400-2500MHz frequency band, and supports wireless connection of the camera to the vehicle-mounted terminal device, with a wireless transmission rate of up to 300Mbps.

[0030] The power supply unit consists of a switching power supply and a linear power supply to achieve precise voltage conversion and stable output. The DC-DC switching power supply is the core component of the power supply unit. Its high-frequency switching technology efficiently converts the input 12V DC voltage to 5V, which is used to drive the interface module, and 3.3V to power the CPU and memory core modules. The linear power supply provides stable power to the dual-band signal unit. The designed linear power supply circuit effectively suppresses power supply noise and ripple, ensuring the normal operation of the video processing unit.

[0031] The video control module 1 is mainly composed of two core parts: a power supply unit and a video processing unit.

[0032] The video processing unit integrates a HiSilicon 3520 processor, an Ethernet interface, two PAL input interfaces, and an HDMI output circuit module. Its core tasks are to capture, efficiently compress, and upload video images in real time, ensuring smooth transmission and efficient use of video data.

[0033] The HiSilicon 3520 processor uses the domestic HiSilicon HI3520D chip, supports 2GB DDR3, 265MB NAND FLASH; supports 1 Gigabit Ethernet; supports 2 PAL inputs; supports HDMI video output.

[0034] The power supply unit is identical to the power supply unit in the video control module.

[0035] The shell of the portable vehicle-mounted video terminal is made of aluminum with a block design.

[0036] The vehicle-mounted video terminal in this embodiment meets the real-time performance indicators of single-channel video compression: 4Mbps150ms, 8Mpbs250ms, and single-channel video decoding: 4Mbps50ms, 8Mpbs100ms.

[0037] The portable vehicle-mounted video terminal is powered by a lithium battery pack. It is powered by a built-in 30,000 mAh lithium battery with an output voltage of 12V, ensuring the stability and reliability of the system.

[0038] The specific implementation process of the vehicle-mounted video terminal in this embodiment is as follows:

[0039] 1. If Figure 1-2 As shown, the lithium battery power passes through the power DCDC module to provide stable power for each circuit in the video control module and the 2.4G / 5G dual-band wireless module, ensuring the stability and reliability of the system.

[0040] 2. If Figure 1-2 As shown, first configure the 4-way wireless camera and set its wireless connection parameters, including SSID (network name) and password, and connect it to the 2.4G wireless module antenna to the 2.4G / 5G dual-band wireless module to receive the video stream from the camera and forward it to the designated receiving end or server.

[0041] 3. If Figure 1-2 As shown in the figure, two external PAL cameras are input to the two-channel PAL input module interface of the video processing board through the K-PAL1 interface aerial plug and the K-PAL2 interface aerial plug. The Hi3520 processor collects and compresses the two-channel video images and transmits them to the 2.4G / 5G dual-band wireless module Ethernet interface through Gigabit Ethernet to realize the transmission of analog video images.

[0042] 4. If Figure 1-3As shown, the 5G antenna of the 2.4G / 5G dual-band wireless module is wirelessly connected to multiple base stations installed on site. To ensure seamless and stable communication between the 2.4G / 5G dual-band wireless module and different base stations, the dual-band wireless module uses inter-frequency switching. As the test vehicle moves, the connection status between the dual-band wireless module and each access point (AP) dynamically adjusts. When the test vehicle is at time T1, the dual-band wireless module automatically connects to AP1, creating two communication links to ensure reliable data transmission. As the vehicle moves to time T2, the module intelligently establishes simultaneous connections with AP1 and AP2, with one link serving as the primary link and the other as the backup link. At time T3, when the vehicle moves further into the coverage area of ​​AP2 and AP3, the dual-band wireless module rapidly adjusts its connection status to connect to both AP2 and AP3. During this process, the original primary link automatically becomes the backup link, and the original backup link becomes the primary link, ensuring continuous and efficient data transmission. The dual-band wireless module seamlessly switched throughout the test, maintaining a one-active-one-backup link configuration, achieving zero packet loss and a switching time of less than 10ms.

[0043] It can be seen from the above technical solution that the utility model operates in a dual-channel 2.4 / 5.8GHz unlicensed frequency band. The product is based on IEEE802.11n MIMO (multiple-input, multiple-output) technology, supports high-speed seamless roaming between different base stations, and the terminal's roaming algorithm and custom signal threshold function ensure normal network communication and data transmission; the on-board video terminal has the functions of data transmission and reception, video acquisition, and image compression, supports 2-channel PAL (1920*1080) video acquisition and H.264 / H.265 video compression, and finally transmits it to the control software via Ethernet or wireless LAN to realize the video acquisition and control functions of moving vehicles.

[0044] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principles of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A portable vehicle-mounted video terminal based on a moving vehicle, characterized in that: include: An aluminum housing (6) and a video control module (1), a 2.4G / 5G dual-band wireless module (2), a battery module (3), a first Ethernet aerial plug interface (4), a power switch (5), a video control module PAL1 aerial plug interface (7), a video control module PAL2 aerial plug interface (8), a video control module power interface (9), a 2.4G / 5G dual-band wireless module power interface (10), a 2.4G / 5G dual-band wireless module Ethernet interface (11), a K-PAL1 aerial plug interface (12), a K-PAL2 aerial plug interface (13), a second Ethernet aerial plug interface (14), a 2.4G antenna aerial plug interface (15), and a 5G antenna aerial plug interface (16) arranged thereon; the 2.4G / 5G dual-band wireless module (2) is installed at the bottom of the aluminum housing (6) near the handle, and the 2.4G antenna aerial plug interface (15) and the 5G antenna aerial plug interface (16) are installed on the lower left side of the aluminum housing (6) through a precise hole in the housing. The battery module (3) is installed in the battery compartment on the right side of the aluminum shell (6). The battery module (3) is controlled by the power switch (5) and is respectively connected to the video control module power interface (9) and the 2.4G / 5G dual-band wireless module power interface (10); the video control module PAL1 aviation plug interface (7) is connected to the K-PAL1 aviation plug interface (12), the video control module PAL2 aviation plug interface (8) is connected to the K-PAL2 aviation plug interface (13), the video control module PAL1 aviation plug interface (7) and the video control module PAL2 aviation plug interface (8) are connected to the external CVBS video source, the K-PAL1 aviation plug interface (12) and the K-PAL2 aviation plug interface (13) are connected to the video control module (1); the 2.4G / 5G dual-band wireless module Ethernet interface (11) includes a first Ethernet interface and a second Ethernet interface, the first Ethernet interface is connected to the second Ethernet aviation plug interface (14) of the shell to establish a path for external communication; The second Ethernet interface is connected to the first Ethernet aviation plug interface (4) of the video control module (1) to establish a channel for data transmission of the video control module; the video control module (1) is responsible for the image acquisition, compression and upload tasks, and the 2.4G / 5G dual-band wireless module (2) is responsible for data forwarding of the wireless camera and the video control module.

2. The portable vehicle-mounted video terminal based on a moving vehicle according to claim 1, characterized in that: The video control module PAL1 aerial plug interface (7) and the video control module PAL2 aerial plug interface (8) are two-way PAL video input interfaces, which perform two-way PAL video acquisition and H.264, H.265 video compression and video splicing, and transmit to the 2.4G / 5G dual-band wireless module (2) via Ethernet.

3. The portable vehicle-mounted video terminal based on a moving vehicle as claimed in claim 2, characterized in that: The 2.4G / 5G dual-band wireless module (2) includes a first power supply unit and a dual-band signal unit; the first power supply unit supplies power to the dual-band signal unit; the dual-band signal unit integrates AR9557 / AR9882+AR9580 chips, has a main frequency of 600MHz, a memory of 64MB DDR2, operates in a dual-channel 5GHz unlicensed frequency band, has a maximum number of terminal accesses of 256, has a fixed allocation of uplink and downlink bandwidth for wireless links, and implements VLAN transparent transmission across three layers of communication.

4. The portable vehicle-mounted video terminal based on a moving vehicle as claimed in claim 3, characterized in that: The dual-frequency signal unit adopts 4T4R architecture.

5. The portable vehicle-mounted video terminal based on a moving vehicle as claimed in claim 4, characterized in that: The first power supply unit includes a DCDC switching power supply and a linear power supply. The DCDC switching power supply converts the input 12V DC voltage into 5V and 3.3V voltages; the linear power supply supplies power to the dual-frequency signal unit.

6. The portable vehicle-mounted video terminal based on a moving vehicle as claimed in claim 5, characterized in that: The video control module (1) comprises a second power supply unit and a video processing unit, wherein the second power supply unit supplies power to the video processing unit; the video processing unit integrates a HiSilicon 3520 processor, an Ethernet interface, two PAL input interfaces and an HDMI output circuit module.

7. The portable vehicle-mounted video terminal based on a moving vehicle as claimed in claim 6, characterized in that: The HiSilicon 3520 processor uses the domestic HiSilicon HI3520D chip, supports 2GB DDR3, 265MB NAND FLASH; supports 1 Gigabit Ethernet; supports 2 PAL inputs; supports HDMI video output.

8. The portable vehicle-mounted video terminal based on a moving vehicle as claimed in claim 7, characterized in that: The second power supply unit is identical to the first power supply unit.

9. The portable vehicle-mounted video terminal based on a moving vehicle as claimed in claim 8, characterized in that: The aluminum housing (6) is designed in blocks for installing different devices.

10. The portable vehicle-mounted video terminal based on a moving vehicle according to claim 9, characterized in that: The battery module (3) is powered by a lithium battery pack and is powered by a built-in 30,000 mAh lithium battery with an output voltage of 12V.

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