CN116208569A

CN116208569A - Industrial POE switch with network camera recognition function

Info

Publication number: CN116208569A
Application number: CN202211653528.XA
Authority: CN
Inventors: 靳亚男
Original assignee: Shenzhen Yanyu Technology Co ltd
Current assignee: Shenzhen Yanyu Technology Co ltd
Priority date: 2022-12-22
Filing date: 2022-12-22
Publication date: 2023-06-02

Abstract

The invention provides an industrial POE switch with a network camera recognition function, which relates to the technical field of industrial switches, and comprises: the system comprises a data transmission module, a management module and a power supply module, wherein the data transmission module is used for connecting a PC end and a plurality of cameras; the management module comprises an MCU unit, an RMII bus interface unit, an EEPROM storage circuit and a password verification unit, wherein the MCU unit is electrically connected with the data transmission module, the MCU unit is a control unit of the management module, and the MCU unit acquires parameters and port states of the cameras according to IP addresses of the cameras connected with the data transmission module, and identifies and manages each camera; the power supply module is used for supplying working electric energy to the switch. According to the invention, the corresponding camera state can be obtained on the PC end when the camera body or the connection port fails, so that the efficiency of managing the camera and maintaining the camera can be greatly improved.

Description

Industrial POE switch with network camera recognition function

Technical Field

The invention relates to the technical field of industrial switches, in particular to an industrial POE switch with a network camera identification function.

Background

In an all-IP video monitoring system IPVS in the security monitoring field, the monitoring system uses optical fibers and POE (PowerOverEthernet) switches to transmit video image data collected by a camera in the Ethernet, and forms an independent and complete system in the process of shooting images, displaying and recording. The security system has various measures for guaranteeing information, including identity authentication, access signal sources of front-end equipment and a monitoring center, and the like. The monitoring system is provided with a password, only authorized management personnel can set and operate the system, and personnel without permission cannot inquire, set the system, delete files and the like.

The Ethernet POE switch has the function of connecting the camera, the background control system and other functional units which need to be interconnected, the camera and the switch are indispensable products in the equipment of the monitoring system, and the important tasks of data acquisition, storage and transmission are undertaken.

When the network is deployed in the actual field, the switch and the camera are subjected to the influence of outdoor severe temperature and humidity environments for a long time, so that the metal part of the connector of the network interface is subjected to oxidation phenomenon, or other external force, so that the network cable crystal head falls off, or the camera body is in fault, or the video data acquired by the camera cannot be normally sent back to the control center due to the fault of the power supply system, the problem of whether the video data are transmitted or not cannot be judged through the appearance of the camera, the problem of whether the video data are transmitted or not is judged, the network is detected through a special instrument or logged in the network equipment through a special tool, meanwhile, the network is detected through inputting a special operation instruction, a large number of cameras are used in the project field, the separated regions of the cameras are wide, the field maintenance personnel are difficult to check the problem after the problem of the data transmission of the camera, and great difficulty and inconvenience are brought to the field maintenance personnel.

Disclosure of Invention

Aiming at the technical problems, the invention aims to provide an industrial POE switch with a network camera identification function, which can acquire the state of a corresponding camera on a PC end when a camera body or a connection port fails, so that the efficiency of camera management and camera maintenance can be greatly improved.

In order to achieve the above purpose, the invention is realized by the following technical scheme:

the invention provides an industrial POE switch with a network camera identification function, which comprises:

the data transmission module is used for connecting the PC end and the cameras;

the management module comprises an MCU unit, an RMII bus interface unit, an EEPROM storage circuit and a password verification unit, wherein the MCU unit is electrically connected with the data transmission module, and the MCU unit is respectively electrically connected with the RMII bus interface unit, the EEPROM storage circuit and the password verification unit; the MCU unit is a control unit of the management module, the MCU unit acquires parameters of the camera according to an IP address of the camera connected with the data transmission module, the EEPROM storage circuit stores parameters configured by a switch, the password verification unit authorizes a visitor, the RMII bus interface unit comprises a data interface and a management interface between the MCU unit and a PHY chip, the data interface comprises two independent channels which are transmitted and received, a clock source is acquired through an external 50MHZ signal or from the MCU unit, and the same clock source is connected to REF_CLK pins of the MCU unit and the PHY chip;

the power supply module is electrically connected with the data transmission module and the management module respectively, and is used for supplying working electric energy to the switch.

Preferably, the data transmission module includes: the PHY chip is respectively and electrically connected with the optical fiber interface and the RJ45 interfaces.

Preferably, the power supply module is electrically connected with the PHY chip, the PHY chip is electrically connected with the MCU unit, and the MCU unit obtains a power supply state of the power supply module.

Preferably, the management module further comprises an RST reset circuit, a reset switch is arranged on the RST reset circuit, the reset function or the factory setting restoration function can be realized by controlling the reset time, and the RST reset circuit is electrically connected with the MCU unit.

Preferably, the management module further comprises a JTAG debug interface, and the JTAG debug interface is used for externally connecting debug equipment.

Preferably, the management module further includes a POE management circuit, the POE management circuit manages power supplied to each port of the switch, displays voltage and current of each port, and load power parameters, and designs an alarm policy, and monitors the working state of the camera from the aspect of POE power supply, the POE management circuit is electrically connected with the MCU unit, and the POE management circuit is used for sending out an alarm signal when the camera has an electrical fault.

Preferably, the switch further comprises a built-in serial port server, a TCP/IP protocol stack is embedded in the built-in serial port server, then data of the serial port are packaged into network port data for transmission, the switch is electrically connected with an RS232 transceiver through a UART interface, and the RS232 transceiver is connected with a PC through a CONSOLE interface.

Preferably, an embedded software design architecture is added on the switch management module, and a network management system user adopting an embedded Web technology can remotely access a camera management interface of the industrial switch through a browser, so that remote identification and monitoring of a camera are realized on the working state of the camera.

The beneficial effects of the invention are as follows: the invention provides an industrial POE switch with a network camera identification function, which comprises: the data transmission module is used for connecting the PC end and the cameras; the management module comprises an MCU unit, an RMII bus interface unit, an EEPROM storage circuit and a password verification unit, wherein the MCU unit is electrically connected with the data transmission module, and the MCU unit is respectively electrically connected with the RMII bus interface unit, the EEPROM storage circuit and the password verification unit; the MCU unit is a control unit of the management module, the MCU unit acquires parameters of the camera according to an IP address of the camera connected with the data transmission module, the EEPROM storage circuit stores parameters configured by a switch, the password verification unit authorizes a visitor, the RMII bus interface unit comprises a data interface and a management interface between the MCU unit and a PHY chip, the data interface comprises two independent channels which are transmitted and received, a clock source is acquired through an external 50MHZ signal or from the MCU unit, and the same clock source is connected to REF_CLK pins of the MCU unit and the PHY chip; the power supply module is electrically connected with the data transmission module and the management module respectively, and is used for supplying working electric energy to the switch. According to the invention, the corresponding camera state can be obtained on the PC end when the camera body or the connection port fails, so that the efficiency of managing the camera and maintaining the camera can be greatly improved.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are needed in the embodiments will be briefly described below, it being understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and other related drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

Fig. 1 shows a schematic diagram of a frame structure of a switch;

fig. 2 shows a schematic circuit configuration of an MCU unit (MAC);

FIG. 3 shows a schematic circuit diagram of a password authentication unit and a CONSOLE interface;

FIG. 4 is a schematic diagram showing the circuit configuration of the RST reset circuit and the serial interface;

fig. 5 shows a schematic circuit configuration of POE management;

fig. 6 shows a circuit configuration diagram of a PHY chip;

fig. 7 shows a schematic diagram of a power supply module;

FIG. 8 shows a schematic circuit diagram of a fiber optic interface;

fig. 9 shows a schematic diagram of the circuit connection of the power supply module;

FIG. 10 shows a schematic diagram of an ONVUF protocol software architecture;

FIG. 11 is a schematic diagram of WEB webmaster page camera management and alert settings;

fig. 12 shows a schematic diagram of a WEB management page exchange port and POE port alarm and UDP server IP setup.

In the figure: 100. data transmission module 200, management module, 300, power module.

Detailed Description

Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative only and are not to be construed as limiting the invention.

In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present invention.

Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present invention, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.

In the present invention, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art according to the specific circumstances.

In the present invention, unless expressly stated or limited otherwise, a first feature "up" or "down" a second feature may be the first and second features in direct contact, or the first and second features in indirect contact via an intervening medium. Moreover, a first feature being "above," "over" and "on" a second feature may be a first feature being directly above or obliquely above the second feature, or simply indicating that the first feature is level higher than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely below the second feature, or simply indicating that the first feature is less level than the second feature.

Referring to fig. 1, the present invention provides an industrial grade POE switch (hereinafter referred to as switch) with network camera identification function, the switch includes a data transmission module 100, a management module 200, and a power supply module 300, wherein the data transmission module 100 is used for connecting a PC end and a plurality of cameras, the management module 200 is electrically connected with the data transmission module 100, the management module 200 is used for identifying and managing the cameras, the power supply module 300 is electrically connected with the data transmission module 100 and the management module 200, and the power supply module 300 is used for supplying working power to the switch.

Referring to fig. 1, fig. 2, fig. 3 and fig. 4, specifically, the management module 200 includes an MCU unit, an RMII bus interface unit, an EEPROM storage circuit and a password verification unit, where the MCU unit is a MAC, the MCU unit is electrically connected to the data transmission module, the MCU unit is electrically connected to the RMII bus interface unit, the EEPROM storage circuit and the password verification unit, the MCU unit is a control unit of the management module 200, the MCU unit can obtain the camera parameters according to an IP address of a camera connected to the data transmission module 100, the EEPROM storage circuit is used to store parameters configured by an industrial switch, the password verification unit authorizes a visitor, the ii bus interface unit includes a data interface, and a management interface between the MAC and the PHY chip, the data interface includes two independent channels that are transmitted and received, and the clock source is obtained from the MAC and the PHY chip through an external 50MHZ signal or a_pin of the MAC, the clock source is connected to the MAC and the rmm_pin of the PHY chip to ensure synchronization of the two clock sources, the ii data interface needs to store the parameters configured by the industrial switch, and the management interface needs 7 data interfaces in total, and the management interface can parse the parameters of the camera to the real-time status of each protocol to be monitored.

It can be understood that the data transmission module 100 is connected to a plurality of cameras and a PC, and video and image data transmitted by different cameras can be obtained through the PC, on this basis, an IP address will be set when the cameras are connected and set, and the MCU on the management module 200 can obtain corresponding camera parameters according to the set IP address, before this, the user needs to obtain authorization of the relevant password verification unit to access the camera IP address and parameters.

Preferably, the password verification unit of the camera adopts a digital password mode, a user can log in the user name and password of the camera after the user passes authorization through a related WEB network management page of the switch, and the switch can automatically search and display parameters such as pixels, manufacturers, models and the like of the bound camera and display related parameters on related webpages. When the problems of transmission and the like occur in the functions of the camera body, an alarm prompt is sent out on the PC, a further user displays the set IP address of the control center through a management interface on the PC, and the camera information which cannot be identified is automatically uploaded to the control center in real time in a UDP protocol mode, so that the running state of each camera can be monitored in real time.

Furthermore, an embedded software design architecture is added on the industrial switch management module, so that a network management system user adopting an embedded Web technology can remotely access a camera management interface of the industrial switch through a browser, and the remote identification and monitoring of a camera are realized from the working state of the camera, and the principle is based on ONVIF protocol standards.

Referring to fig. 1, 10 and 11, according to the camera IP (Web Services address) set by the port of the industrial switch, call the GetDeviceInformation interface of the ONVIF standard, carry the camera user name and password authentication information, send a request packet to the camera, and perform network transmission on the identified video data by adopting the TCP/IP protocol, so as to complete the request and authentication process.

If the authentication of the industrial switch is authorized, the GetDeviceInformation interface for acquiring the ONVIF standard is further used for feeding back a response data packet, and analyzing the corresponding data packet and acquiring relevant equipment parameters of the camera, and if the response fails, automatically sending alarm information to a control center of the PC by the network management system in real time.

In the above scheme, the camera is identified and monitored through the management module 200, so that the safety of the data transmission of the camera is guaranteed, the maintenance efficiency of the camera is improved, the functional fault of the camera is accurately judged remotely, and great convenience is brought to the operation and maintenance in the security monitoring field.

The MCU unit adopts a management chip with the model number of STM207, and the password verification unit adopts a chip with the model number of SLS-1 DERE.

It should be noted that the EEPROM memory circuit (ElectricallyErasableProgrammable readonlymemory) refers to a charged EEPROM memory, which includes an EEPROM memory chip that does not lose data after power failure. The EEPROM can erase the existing information on the computer or the special equipment, thereby realizing reprogramming.

Further, referring to fig. 6, 8 and 12, based on the above scheme, the data transmission module 100 includes a PHY chip, an optical fiber interface and a plurality of RJ45 interfaces, where the optical fiber interface and the RJ45 interfaces are electrically connected to the PHY chip.

The optical fiber interfaces are used for connecting optical fiber data transmission lines, and the RJ45 interfaces are used for connecting a PC and a plurality of cameras.

Further, the power supply module is electrically connected to the PHY chip, the PHY chip is electrically connected to the MCU unit, the MCU unit obtains a power supply state of the power supply module 300, and further can monitor a connection port of the camera, when a physical connection of the camera fails (a port is in poor contact, an interface is aged and is not electrified, etc.), the management module 200 can automatically upload the problematic port connection state information to the PC in real time in a UDP protocol manner, so that operation monitoring of the camera can be achieved.

In the scheme, the industrial switch not only can identify and monitor the running state of each camera, but also can monitor the interface connection state between the camera and the industrial switch, so that when the camera body fails or a connection port thereof fails, a corresponding alarm notification and the position of the corresponding camera can be sent out on the PC, and further the working efficiency of camera data acquisition operation and the convenience of maintenance on the camera can be greatly improved.

Referring to fig. 1, 7 and 9, in the above scheme, the power supply module 300 includes a DC-DC controller 1, a DC-DC controller 2, a DC-DC controller 3, a DC-DC controller 4 and an LDO, and uses the DC-DC controller 1 to step down and stabilize the input voltage 48V to 12V, and the DC-DC controller 2 to step down and stabilize the input voltage 12V to 3.3V, so as to supply power to the MCU unit and the PHY chip.

The input voltage 12V of the DC-DC controller 3 is stepped down and stabilized to 1.5V, and power can be supplied to the PHY chip. The input voltage 12V of the DC-DC controller 4 is stepped down and stabilized to 1.0V, and power can be supplied to the PHY chip. The PHY chip can be powered by stepping down 3.3V to 2.5V through LDO.

Further, referring to fig. 1, fig. 2 and fig. 5, based on the above scheme, the management module 200 further includes a RST reset circuit, a JTAG debug interface, and a low voltage warning circuit, where the RST reset circuit, the JTAG debug interface, and the POE management circuit are electrically connected to the MCU unit.

Further, the management module further comprises a RST reset circuit, a reset switch is arranged on the RST reset circuit, the reset function is realized or the factory setting function is restored by controlling the reset time, the RST reset circuit is electrically connected with the MCU, and the RST reset circuit can reset the industrial switch when the industrial switch is blocked or data transmission fails.

Furthermore, the management module further comprises a JTAG debugging interface, wherein the JTAG debugging interface is used for externally connecting debugging equipment, and protocol data packet forwarding time delay can be adjusted through the adjustment of the debugging equipment, so that the camera can be better identified and monitored.

Further, the management module further comprises a POE management circuit, the POE management circuit can carry out power supply management on each port of the switch, display parameters such as voltage, current and load power of each port, can remotely judge whether the power supply state of the port is abnormal in real time, and is designed with an alarm strategy. The POE management circuit is electrically connected with the MCU, and the POE management circuit is used for sending out a warning signal when the camera is in power-on failure. When the industrial switch has power supply failure or the camera port connected with the industrial switch has connection failure, the failure port data can be sent to the management interface of the PC, so that the management efficiency of the operation of the camera can be effectively improved.

Further, referring to fig. 4, the industrial switch further includes a built-in serial server function, in which a TCP/IP protocol stack is embedded, and then data of the serial port is encapsulated into network port data for transmission, so as to realize bidirectional transparent transmission of data of the RS-232/485 serial port and the TCP/IP network interface. The switch is electrically connected with the RS232 transceiver through a UART interface, and the RS232 transceiver is connected with the PC through a CONSOLE interface.

The invention provides an industrial POE switch with a network camera identification function, which comprises: the data transmission module is used for connecting the PC end and the cameras; the management module comprises an MCU unit, an RMII bus interface unit, an EEPROM storage circuit and a password verification unit, wherein the MCU unit is electrically connected with the data transmission module, and the MCU unit is respectively electrically connected with the RMII bus interface unit, the EEPROM storage circuit and the password verification unit; the MCU unit is a control unit of the management module, the MCU unit acquires parameters of the camera according to an IP address of the camera connected with the data transmission module, the EEPROM storage circuit stores parameters configured by a switch, the password verification unit authorizes a visitor, the RMII bus interface unit comprises a data interface and a management interface between the MCU unit and a PHY chip, the data interface comprises two independent channels which are transmitted and received, a clock source is acquired through an external 50MHZ signal or from the MCU unit, and the same clock source is connected to REF_CLK pins of the MCU unit and the PHY chip; the power supply module is electrically connected with the data transmission module and the management module respectively, and is used for supplying working electric energy to the switch. According to the invention, the corresponding camera state can be obtained on the PC end when the camera body or the connection port fails, so that the efficiency of managing the camera and maintaining the camera can be greatly improved.

It will be appreciated that the PC can be connected not only through the RJ45 interface, but also through the confole interface.

In the description of the present specification, a description referring to terms "one embodiment," "some embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, schematic representations of the above terms are not necessarily directed to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, the different embodiments or examples described in this specification and the features of the different embodiments or examples may be combined and combined by those skilled in the art without contradiction.

While embodiments of the present invention have been shown and described above, it will be understood that the above embodiments are illustrative and not to be construed as limiting the invention, and that variations, modifications, alternatives and variations may be made to the above embodiments by one of ordinary skill in the art within the scope of the invention.

Claims

1. An industrial POE switch having a network camera identification function, comprising:

the data transmission module is used for connecting the PC end and the cameras;

2. The industrial POE switch with network camera identification function of claim 1, wherein said data transmission module comprises: the PHY chip is respectively and electrically connected with the optical fiber interface and the RJ45 interfaces.

3. The industrial grade POE switch with network camera identification function of claim 2, wherein said power module is electrically connected to said PHY chip, said PHY chip is electrically connected to said MCU unit, and said MCU unit obtains a power status of said power module.

4. The industrial-grade POE switch with network camera identification function according to claim 1, wherein said management module further comprises a RST reset circuit, said RST reset circuit is provided with a reset switch, and a reset function or a factory setting restoration function can be realized by controlling a reset time, and said RST reset circuit is electrically connected to said MCU unit.

5. The industrial grade POE switch with network camera identification function of claim 4, wherein said management module further comprises a JTAG debug interface for externally connecting to a debug device.

6. The industrial-grade POE switch with network camera identification of claim 5, wherein said management module further comprises a POE management circuit, said POE management circuit manages power supplied to each port of said switch, displays voltage and current of each port, and load power parameters, and is configured with an alarm policy, monitors the operating state of said camera from POE power supply, said POE management circuit is electrically connected to said MCU unit, and said POE management circuit is configured to send out an alarm signal when said camera fails in power on.

7. The industrial grade POE switch with network camera identification function of claim 1, further comprising a built-in serial port server, embedding a TCP/IP protocol stack therein, and then transmitting by encapsulating serial port data into network port data, said switch being electrically connected to an RS232 transceiver via a UART interface, said RS232 transceiver being connected to a PC via a confole interface.

8. The industrial grade POE switch with network camera identification function of claim 7, wherein an embedded software design architecture is added to said switch management module, and the network management system user adopting embedded Web technology can remotely access the camera management interface of the industrial switch through a browser, thereby realizing remote identification and monitoring of the camera from the camera working state.