CN216960033U

CN216960033U - Video monitoring system for ultra-high-speed wireless communication local area network

Info

Publication number: CN216960033U
Application number: CN202122102895.8U
Authority: CN
Inventors: 施文剑; 付超
Original assignee: Guangdong New Shoreline Technology Co ltd
Current assignee: Guangdong New Shoreline Technology Co ltd
Priority date: 2021-09-02
Filing date: 2021-09-02
Publication date: 2022-07-12
Anticipated expiration: 2031-09-02

Abstract

The utility model discloses a video monitoring system for an ultra-high-speed wireless communication local area network, which comprises: the camera projects an optical image generated by a scene to an image sensor through a lens, converts the optical image into an electric signal, performs video coding compression, and transmits the video coding compression signal to a video monitoring terminal through a network cable; the video monitoring terminal converts the received video coding compression signal into an ultra-high-speed wireless local area network (EHUT) signal and sends the signal to the central access equipment through an antenna; the central access equipment converts the received ultrahigh-speed wireless local area network (EHUT) signal into a video coding compression signal, decodes the video coding compression signal through a decoder and displays the video coding compression signal on a display screen.

Description

Video monitoring system for ultra-high-speed wireless communication local area network

Technical Field

The utility model belongs to the technical field of wireless communication, and particularly relates to a video monitoring system for an ultra-high-speed wireless communication local area network.

Background

With the rapid development of society and network technology, the application of video monitoring in various industries is gradually wide, most of wireless video monitoring on the market at present uses 3G \4G \ WIFI wireless communication technology for video and control transmission, so that the flow rate charge of a provider needs to be paid, high-mobility and low-delay scenes cannot be met, and partial area networks are difficult to cover. The ultra-high speed wireless local area network (EUHT) transmission technology proposed by the new shore line has the advantages of high reliability, low time delay and high mobility, and therefore, a video monitoring system applied to an ultra-high speed wireless local area network (EUHT) communication system is required to meet the requirements of high communication reliability, low time delay, high mobility, easy use and easy deployment.

Disclosure of Invention

In view of the above, the present invention provides a video monitoring system for an ultra-high speed wireless communication local area network, which is suitable for indoor and outdoor coverage environments, and cooperates with a central access device to form an EUHT communication system, and the system is flexible in networking and laying, convenient and fast, and has an ultra-high reliable connection, an end-to-end millisecond level, full-band support, strong anti-interference capability, and large-bandwidth wireless communication.

A video surveillance system for an ultra-high speed wireless communication local area network, comprising:

the camera projects an optical image generated by a scene to an image sensor through a lens, converts the optical image into an electric signal, converts an analog image signal into a digital image signal through an analog-to-digital converter, performs video coding compression through a digital signal processing chip, and transmits the video coding compression signal to a video monitoring terminal through a network cable;

the video monitoring terminal converts the received video coding compression signal into an ultra-high-speed wireless local area network (EHUT) signal and sends the signal to the central access equipment through an antenna;

the central access equipment converts the received ultrahigh-speed wireless local area network (EHUT) signal into a video coding compression signal, decodes the video coding compression signal through a decoder and displays the video coding compression signal on a display screen.

The video monitoring terminal includes: mainboard and shell, the mainboard includes:

the main control chip is matched with a radio frequency transmitting link and a radio frequency receiving link, and a system is responsible for carrying out uplink and downlink wireless data transmission with an ultrahigh-speed wireless local area network (EHUT) base station to realize ultrahigh-speed wireless local area network coverage;

the GPS positioning module is used for monitoring the position and the motion trail of the video monitoring terminal in real time;

the power supply protection circuit consists of a ceramic gas discharge tube, a transient suppression diode, an inductor and an electrolytic capacitor protection device, and can prevent the reverse connection of a power supply and protect a rear-stage circuit;

the network data protection circuit consists of two ceramic gas discharge tubes GDT, resistors R1, R2, R3 and R4, two transient suppression diodes TVS and a network transformer protection device; the lightning and surge voltage protection circuit is used for preventing lightning and surge voltage and protecting internal circuits.

The video monitoring terminal shell is of a die-cast aluminum structure and comprises an upper shell and a lower shell, and two sides of the lower shell comprise lugs for fixedly mounting the holding pole; the main board is fixed on the lower shell through 8 screws;

and one side of the lower shell is provided with a ventilation valve for balancing the air pressure difference between the inside and the outside of the shell to realize water and dust prevention.

Compared with the closest prior art, the technical scheme provided by the utility model has the following beneficial effects:

1. the whole shell adopts a die-casting aluminum structure, the protection level of IP65 is achieved, the shell can be used in outdoor severe environment, and the shell is lightning-proof, surge-proof, safe and stable;

2. the video monitoring terminal has a GPS positioning function, can be installed on a mobile vehicle to monitor the position in real time, and is simple and convenient to install;

3. the EUHT technology adopted in the utility model forms a communication system with high reliability, low time delay and good user experience effect.

For the purposes of the foregoing and related ends, the one or more embodiments include the features hereinafter fully described and particularly pointed out in the claims. The following description and the annexed drawings set forth in detail certain illustrative aspects and are indicative of but a few of the various ways in which the principles of the various embodiments may be employed. Other benefits and novel features will become apparent from the following detailed description when considered in conjunction with the drawings and the disclosed embodiments are intended to include all such aspects and their equivalents.

Drawings

FIG. 1 is a diagram of a video monitoring terminal product of an ultra-high speed wireless local area network provided by an embodiment;

fig. 2 is a configuration diagram of a main board of a video monitoring terminal according to an embodiment;

fig. 2a is a circuit diagram of a main board system of a video monitoring terminal according to an embodiment;

FIG. 3 is a diagram of a main chip of a video monitoring terminal according to an embodiment;

FIG. 4 is a power protection circuit diagram of a video monitoring terminal according to an embodiment;

FIG. 5 is a circuit diagram of network data protection of a video monitoring terminal according to an embodiment;

fig. 6 is a schematic diagram of a video monitoring terminal connected with a power adapter and a camera according to an embodiment.

Detailed Description

The detailed features and advantages of the present invention are described in detail in the following embodiments, which are sufficient for those skilled in the art to understand the technical contents of the present invention and implement the present invention, and the related objects and advantages of the present invention can be easily understood by those skilled in the art from the disclosure of the present specification, the protection scope, and the accompanying drawings. The following examples are intended to illustrate the aspects of the present invention in further detail, but are not intended to limit the scope of the present invention in any way.

Examples

The embodiment provides a video monitoring system for an ultra-high speed wireless communication local area network, which comprises:

the camera 100 projects an optical image generated by a scene to an image sensor through a lens, converts the optical image into an electrical signal, converts an analog image signal into a digital image signal through an analog-to-digital converter, performs video coding compression through a digital signal processing chip, and transmits the video coding compression signal to a video monitoring terminal through a network cable;

the video monitoring terminal 200 converts the received video coding compression signal into an ultra-high-speed wireless local area network (EHUT) signal and sends the signal to the central access equipment through an antenna;

the central access device 300 converts the received ultra-high speed wireless local area network (EHUT) signal into a video coding compressed signal, decodes the video coding compressed signal through a decoder, and displays the video coding compressed signal on a display screen.

As shown in fig. 1, the video monitoring terminal 200 includes: a main board 210 and a housing 220, wherein,

as shown in fig. 2, the main board 210 includes:

the main control chip 211 is used for cooperating with a radio frequency transmitting link 213 and a radio frequency receiving link 214, and the system is responsible for performing uplink and downlink wireless data transmission with an ultra-high speed wireless local area network (EHUT) base station to realize ultra-high speed wireless local area network coverage; fig. 2a shows a system circuit diagram of the main board 211 of the video monitoring terminal, including the connection of various parts;

specifically, the main control chip 211 in this embodiment adopts a new shore line independently developed NL6683 chip, as shown in fig. 3, NL6683 is an SOC chip supporting the EUHT technology of the ultra-high speed wireless communication local area network, and integrates a high performance CPU, an EUHT MAC, an EUHT baseband processor BBP, an ADC/DAC, and an RF radio frequency front end, and cooperates with a power amplifier and a radio frequency switch to form an EUHT 40M system, which is responsible for performing uplink and downlink wireless data transmission with an EUHT base station, so as to satisfy reliable wireless network coverage, and achieve functions of system monitoring, network event reporting, EUHT event interruption, network management, and the like.

Further, various working clocks required internally are generated by an external crystal oscillator of 40MHz, the interface of the chip, in addition to supporting 10/100/1000M ethernet interface, also supports secure digital memory card/secure digital Input Output SD/SDIO, USB2.0 OTG interface, in addition, the chip NL6683 provides various peripheral interfaces including UART, SPI, I2C and programmable General Purpose Input Output GPIO (General Purpose Input/Output); the NL6683 is provided with SPI Flash storage firmware and a GPS module for positioning and RJ45 chip extension of a physical layer.

Furthermore, the NL6683 RF front end cooperates with an impedance balancer balun, an adjustable attenuator, a primary power amplifier PA (poweramplifier), a band Pass filter bpf (band Pass filter), and a secondary power amplifier PA to form a radio frequency transmitting link 213; the radio frequency receiving link 214 is formed by matching with a peripheral low-noise amplifier (LNA), a Band Pass Filter and an impedance balancer (balun), and an EUHT 40M 2x2 MIMO communication system is formed by a radio frequency SWITCH.

The GPS positioning module 212 is used for monitoring the position and the motion track of the video monitoring terminal in real time;

the GPS positioning module 212 receives GPS positioning and time service signals, analyzes corresponding signals and uploads the signals to the central access equipment 300, and the central access equipment 300 can position and track a motion track by receiving the signals and combining a map;

as shown in fig. 4, the power protection circuit 215 is composed of a ceramic gas discharge tube gdt (gas discharge tube), a transient suppression diode tvs (transient Voltage supplies), an inductor L1, and an electrolytic capacitor C1; the GDT can prevent lightning; the transient suppression diode TVS prevents surge voltage; the surge circuit is prevented and ripples are reduced during inductance and electrolytic capacitance; therefore, the internal devices are protected from being damaged, the power supply protection circuit 215 in the embodiment not only meets the surge test standards DM +/-2 kV of IEC61000-4-5, GBT17626.5 and the like, but also can prevent the reverse connection of the power supply, and further protect the rear-stage circuit.

As shown in fig. 5, the network data protection circuit 216 includes two ceramic gas discharge tubes GDT, resistors R1, R2, R3, R4, two transient suppressor diodes TVS, and a network transformer protection device, where the GDT ceramic gas discharge tubes prevent lightning introduced by a network cable, the resistors may block transient large current, and the TVS transient suppressor diodes prevent surge voltage, so as to protect internal devices from being damaged, and the network data protection circuit not only meets surge test standards of IEC61000-4-5, GBT17626.5, etc., and the data line: DM +/-6 kV/CM +/-6 kV, thereby protecting the physical layer circuit.

The video monitoring terminal shell 220 is of a die-cast aluminum structure and comprises an upper shell 221 and a lower shell 222, and two sides of the lower shell 222 comprise lugs 222a for fixedly mounting a holding pole; the main board 210 is fixed on the lower shell 222 through screws;

the shell reaches the IP65 protection grade and the dustproof grade, dust can be completely prevented from entering, the waterproof grade is realized, and low-pressure injection at any angle has no influence; lightning protection and surge prevention;

one side of the lower shell 222 is provided with a ventilation valve 222b for balancing the air pressure difference between the inside and the outside of the shell, so that water and dust are prevented.

The terminal radio frequency interface and the GPS antenna interface are connected in series with the antenna feeder lightning protection device, and the shell is connected with the ground through a conductive object, so that lightning protection is achieved. The circuit of the terminal connected with the external equipment only comprises a network data line and a power line;

the external equipment is a power adapter Passive POE and a camera or a central access device AP, the interaction between the camera or the AP and the terminal is to transmit network data signals by using two pairs of line sequence pairs (1,2,3 and 6) of the network port, and the interaction between the power adapter and the terminal is to transmit direct current power supply by using the remaining two pairs of idle line sequence pairs (4,5,7 and 8) of the network port. The surge protection conforms to the IEC61000-4-5 standard that a power line DM +/-2 kV, a data line: DM +/-6 kV/CM +/-6 kV, electrostatic protection meets IEC61000-4-2 standard: ± 8kV, air discharge: 15 kV. The Passive POE is a technology for transmitting network data signals for terminal equipment and simultaneously providing direct current power supply, two pairs of line pairs (1,2,3 and 6) are used for transmitting the network data signals on four twisted pairs of network cables, the other two pairs of line pairs (4,5,7 and 8) are used for transmitting a DC 24 power supply, one pair (4 and 5) is used for transmitting a power supply anode 24V, and the other pair (7 and 8) is used for transmitting a power supply cathode GND, so that the Passive POE has the advantages of simplifying wiring and saving labor cost. The Passive POE power adapter and the terminal are connected to the network device as shown in fig. 6.

The video monitoring 200 pole holding installation only needs four nuts, two screw rods and one pole holding support, and the installation steps are as follows: firstly, fixing two screw rods on hangers at two sides of a terminal by using 2M 6 hexagon nuts, then placing the terminal at a proper position of a holding pole, sleeving a holding pole bracket, and finally fixing by using 2M 6 hexagon nuts. The whole installation mode is simple and convenient, a large amount of labor cost can be saved, and the installation of holding poles with different diameters is supported.

The above-described embodiments are merely preferred examples of the present invention, and not intended to limit the scope of the utility model, so that equivalent changes or modifications in the structure, features and principles of the utility model described in the claims should be included in the claims.

Claims

1. A video surveillance system for an ultra-high speed wireless communication local area network, comprising:

the video monitoring terminal converts the received video coding compression signal into an ultra-high speed wireless local area network signal and sends the ultra-high speed wireless local area network signal to the central access equipment through an antenna;

the central access device converts the received super-high speed wireless local area network signal into a video coding compressed signal, decodes the video coding compressed signal through a decoder and displays the video coding compressed signal on a display screen.

2. The video surveillance system of claim 1, wherein the video surveillance terminal comprises: mainboard and shell, the mainboard includes:

the master control chip is matched with the radio frequency transmitting link and the radio frequency receiving link to finish uplink and downlink wireless data transmission with the ultrahigh-speed wireless local area network base station so as to realize ultrahigh-speed wireless local area network coverage; the radio frequency front end of the main control chip is connected with an impedance balancer of a radio frequency transmitting link and an impedance balancer of a radio frequency receiving link;

and the GPS positioning module is connected with the main control chip through a universal asynchronous receiving and transmitting interface and is used for monitoring the position and the motion track of the video monitoring terminal in real time.

3. The video surveillance system of claim 2, wherein the video surveillance terminal further comprises:

the ceramic gas discharge tube is connected between a power supply and the ground, is connected with an inductor in series, and then is connected with a transient suppression diode and an electrolytic capacitor in parallel to form a power supply protection circuit, so that the power supply is prevented from being reversely connected, and a rear-stage circuit is protected.

4. The video surveillance system of any of claims 2-3,

the video monitoring terminal shell is of a die-cast aluminum structure and comprises an upper shell and a lower shell, and two sides of the lower shell comprise lugs for fixedly mounting the holding pole; the mainboard passes through 8 screws to be fixed on the inferior valve.

5. The video surveillance system of claim 4,